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-rw-r--r--drivers/clk/Kconfig7
-rw-r--r--drivers/clk/Makefile4
-rw-r--r--drivers/clk/at91/clk-master.c2
-rw-r--r--drivers/clk/at91/clk-programmable.c202
-rw-r--r--drivers/clk/at91/clk-system.c76
-rw-r--r--drivers/clk/bcm/Kconfig9
-rw-r--r--drivers/clk/bcm/Makefile3
-rw-r--r--drivers/clk/bcm/clk-bcm281xx.c416
-rw-r--r--drivers/clk/bcm/clk-kona-setup.c769
-rw-r--r--drivers/clk/bcm/clk-kona.c1033
-rw-r--r--drivers/clk/bcm/clk-kona.h410
-rw-r--r--drivers/clk/clk-axi-clkgen.c312
-rw-r--r--drivers/clk/clk-divider.c10
-rw-r--r--drivers/clk/clk-moxart.c97
-rw-r--r--drivers/clk/clk-nomadik.c3
-rw-r--r--drivers/clk/clk-ppc-corenet.c70
-rw-r--r--drivers/clk/clk-s2mps11.c29
-rw-r--r--drivers/clk/clk.c144
-rw-r--r--drivers/clk/clkdev.c2
-rw-r--r--drivers/clk/hisilicon/Makefile5
-rw-r--r--drivers/clk/hisilicon/clk-hi3620.c298
-rw-r--r--drivers/clk/hisilicon/clk-hip04.c58
-rw-r--r--drivers/clk/hisilicon/clk.c62
-rw-r--r--drivers/clk/hisilicon/clk.h17
-rw-r--r--drivers/clk/keystone/gate.c1
-rw-r--r--drivers/clk/mmp/clk-frac.c20
-rw-r--r--drivers/clk/mvebu/Kconfig8
-rw-r--r--drivers/clk/mvebu/Makefile2
-rw-r--r--drivers/clk/mvebu/armada-370.c21
-rw-r--r--drivers/clk/mvebu/armada-375.c184
-rw-r--r--drivers/clk/mvebu/armada-38x.c167
-rw-r--r--drivers/clk/mvebu/armada-xp.c20
-rw-r--r--drivers/clk/mvebu/clk-corediv.c154
-rw-r--r--drivers/clk/mvebu/dove.c19
-rw-r--r--drivers/clk/mvebu/kirkwood.c34
-rw-r--r--drivers/clk/samsung/clk-exynos-audss.c2
-rw-r--r--drivers/clk/samsung/clk-exynos4.c172
-rw-r--r--drivers/clk/samsung/clk-exynos5250.c49
-rw-r--r--drivers/clk/samsung/clk-exynos5420.c49
-rw-r--r--drivers/clk/samsung/clk-exynos5440.c2
-rw-r--r--drivers/clk/samsung/clk-s3c64xx.c79
-rw-r--r--drivers/clk/samsung/clk.c71
-rw-r--r--drivers/clk/samsung/clk.h14
-rw-r--r--drivers/clk/shmobile/Makefile1
-rw-r--r--drivers/clk/shmobile/clk-div6.c2
-rw-r--r--drivers/clk/shmobile/clk-mstp.c2
-rw-r--r--drivers/clk/shmobile/clk-rcar-gen2.c48
-rw-r--r--drivers/clk/shmobile/clk-rz.c103
-rw-r--r--drivers/clk/sirf/clk-atlas6.c3
-rw-r--r--drivers/clk/sirf/clk-common.c3
-rw-r--r--drivers/clk/sirf/clk-prima2.c3
-rw-r--r--drivers/clk/socfpga/Makefile3
-rw-r--r--drivers/clk/socfpga/clk-gate.c263
-rw-r--r--drivers/clk/socfpga/clk-periph.c94
-rw-r--r--drivers/clk/socfpga/clk-pll.c131
-rw-r--r--drivers/clk/socfpga/clk.c326
-rw-r--r--drivers/clk/socfpga/clk.h57
-rw-r--r--drivers/clk/st/Makefile1
-rw-r--r--drivers/clk/st/clkgen-fsyn.c1039
-rw-r--r--drivers/clk/st/clkgen-mux.c820
-rw-r--r--drivers/clk/st/clkgen-pll.c698
-rw-r--r--drivers/clk/st/clkgen.h48
-rw-r--r--drivers/clk/sunxi/clk-sunxi.c305
-rw-r--r--drivers/clk/tegra/clk-divider.c2
-rw-r--r--drivers/clk/tegra/clk-id.h4
-rw-r--r--drivers/clk/tegra/clk-periph.c2
-rw-r--r--drivers/clk/tegra/clk-tegra-periph.c10
-rw-r--r--drivers/clk/tegra/clk-tegra-super-gen4.c2
-rw-r--r--drivers/clk/tegra/clk-tegra114.c8
-rw-r--r--drivers/clk/tegra/clk-tegra124.c48
-rw-r--r--drivers/clk/tegra/clk-tegra20.c2
-rw-r--r--drivers/clk/ti/clk-33xx.c1
-rw-r--r--drivers/clk/ti/clk-44xx.c1
-rw-r--r--drivers/clk/ti/clk-54xx.c1
-rw-r--r--drivers/clk/ti/clk-7xx.c1
-rw-r--r--drivers/clk/ti/divider.c8
-rw-r--r--drivers/clk/ux500/u8500_of_clk.c3
-rw-r--r--drivers/clk/versatile/clk-icst.c21
-rw-r--r--drivers/clk/versatile/clk-icst.h1
-rw-r--r--drivers/clk/versatile/clk-impd1.c12
-rw-r--r--drivers/clk/versatile/clk-integrator.c83
-rw-r--r--drivers/clk/versatile/clk-realview.c4
-rw-r--r--drivers/clk/zynq/clkc.c93
-rw-r--r--drivers/clk/zynq/pll.c18
84 files changed, 8415 insertions, 966 deletions
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 7641965d208d..6f56d3a4f010 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -65,10 +65,12 @@ config COMMON_CLK_SI570
clock generators.
config COMMON_CLK_S2MPS11
- tristate "Clock driver for S2MPS11 MFD"
+ tristate "Clock driver for S2MPS11/S5M8767 MFD"
depends on MFD_SEC_CORE
---help---
- This driver supports S2MPS11 crystal oscillator clock.
+ This driver supports S2MPS11/S5M8767 crystal oscillator clock. These
+ multi-function devices have 3 fixed-rate oscillators, clocked at
+ 32KHz each.
config CLK_TWL6040
tristate "External McPDM functional clock from twl6040"
@@ -111,4 +113,5 @@ source "drivers/clk/qcom/Kconfig"
endmenu
+source "drivers/clk/bcm/Kconfig"
source "drivers/clk/mvebu/Kconfig"
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index a367a9831717..5f8a28735c96 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_ARCH_EFM32) += clk-efm32gg.o
obj-$(CONFIG_ARCH_HIGHBANK) += clk-highbank.o
obj-$(CONFIG_MACH_LOONGSON1) += clk-ls1x.o
obj-$(CONFIG_COMMON_CLK_MAX77686) += clk-max77686.o
+obj-$(CONFIG_ARCH_MOXART) += clk-moxart.o
obj-$(CONFIG_ARCH_NOMADIK) += clk-nomadik.o
obj-$(CONFIG_ARCH_NSPIRE) += clk-nspire.o
obj-$(CONFIG_CLK_PPC_CORENET) += clk-ppc-corenet.o
@@ -29,7 +30,9 @@ obj-$(CONFIG_ARCH_VT8500) += clk-vt8500.o
obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o
obj-$(CONFIG_COMMON_CLK_XGENE) += clk-xgene.o
obj-$(CONFIG_COMMON_CLK_AT91) += at91/
+obj-$(CONFIG_ARCH_BCM_MOBILE) += bcm/
obj-$(CONFIG_ARCH_HI3xxx) += hisilicon/
+obj-$(CONFIG_ARCH_HIP04) += hisilicon/
obj-$(CONFIG_COMMON_CLK_KEYSTONE) += keystone/
ifeq ($(CONFIG_COMMON_CLK), y)
obj-$(CONFIG_ARCH_MMP) += mmp/
@@ -43,6 +46,7 @@ obj-$(CONFIG_ARCH_SHMOBILE_MULTI) += shmobile/
obj-$(CONFIG_ARCH_SIRF) += sirf/
obj-$(CONFIG_ARCH_SOCFPGA) += socfpga/
obj-$(CONFIG_PLAT_SPEAR) += spear/
+obj-$(CONFIG_ARCH_STI) += st/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_ARCH_OMAP2PLUS) += ti/
diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c
index bd313f7816a8..c1af80bcdf20 100644
--- a/drivers/clk/at91/clk-master.c
+++ b/drivers/clk/at91/clk-master.c
@@ -242,7 +242,7 @@ of_at91_clk_master_setup(struct device_node *np, struct at91_pmc *pmc,
irq = irq_of_parse_and_map(np, 0);
if (!irq)
- return;
+ goto out_free_characteristics;
clk = at91_clk_register_master(pmc, irq, name, num_parents,
parent_names, layout,
diff --git a/drivers/clk/at91/clk-programmable.c b/drivers/clk/at91/clk-programmable.c
index fd792b203eaf..62e2509f9df1 100644
--- a/drivers/clk/at91/clk-programmable.c
+++ b/drivers/clk/at91/clk-programmable.c
@@ -13,12 +13,9 @@
#include <linux/clk/at91_pmc.h>
#include <linux/of.h>
#include <linux/of_address.h>
-#include <linux/of_irq.h>
#include <linux/io.h>
#include <linux/wait.h>
#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
#include "pmc.h"
@@ -38,104 +35,59 @@ struct clk_programmable_layout {
struct clk_programmable {
struct clk_hw hw;
struct at91_pmc *pmc;
- unsigned int irq;
- wait_queue_head_t wait;
u8 id;
- u8 css;
- u8 pres;
- u8 slckmck;
const struct clk_programmable_layout *layout;
};
#define to_clk_programmable(hw) container_of(hw, struct clk_programmable, hw)
-
-static irqreturn_t clk_programmable_irq_handler(int irq, void *dev_id)
-{
- struct clk_programmable *prog = (struct clk_programmable *)dev_id;
-
- wake_up(&prog->wait);
-
- return IRQ_HANDLED;
-}
-
-static int clk_programmable_prepare(struct clk_hw *hw)
+static unsigned long clk_programmable_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
{
- u32 tmp;
+ u32 pres;
struct clk_programmable *prog = to_clk_programmable(hw);
struct at91_pmc *pmc = prog->pmc;
const struct clk_programmable_layout *layout = prog->layout;
- u8 id = prog->id;
- u32 mask = PROG_STATUS_MASK(id);
-
- tmp = prog->css | (prog->pres << layout->pres_shift);
- if (layout->have_slck_mck && prog->slckmck)
- tmp |= AT91_PMC_CSSMCK_MCK;
-
- pmc_write(pmc, AT91_PMC_PCKR(id), tmp);
-
- while (!(pmc_read(pmc, AT91_PMC_SR) & mask))
- wait_event(prog->wait, pmc_read(pmc, AT91_PMC_SR) & mask);
- return 0;
+ pres = (pmc_read(pmc, AT91_PMC_PCKR(prog->id)) >> layout->pres_shift) &
+ PROG_PRES_MASK;
+ return parent_rate >> pres;
}
-static int clk_programmable_is_ready(struct clk_hw *hw)
+static long clk_programmable_determine_rate(struct clk_hw *hw,
+ unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_clk)
{
- struct clk_programmable *prog = to_clk_programmable(hw);
- struct at91_pmc *pmc = prog->pmc;
-
- return !!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_PCKR(prog->id));
-}
+ struct clk *parent = NULL;
+ long best_rate = -EINVAL;
+ unsigned long parent_rate;
+ unsigned long tmp_rate;
+ int shift;
+ int i;
-static unsigned long clk_programmable_recalc_rate(struct clk_hw *hw,
- unsigned long parent_rate)
-{
- u32 tmp;
- struct clk_programmable *prog = to_clk_programmable(hw);
- struct at91_pmc *pmc = prog->pmc;
- const struct clk_programmable_layout *layout = prog->layout;
+ for (i = 0; i < __clk_get_num_parents(hw->clk); i++) {
+ parent = clk_get_parent_by_index(hw->clk, i);
+ if (!parent)
+ continue;
- tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id));
- prog->pres = (tmp >> layout->pres_shift) & PROG_PRES_MASK;
+ parent_rate = __clk_get_rate(parent);
+ for (shift = 0; shift < PROG_PRES_MASK; shift++) {
+ tmp_rate = parent_rate >> shift;
+ if (tmp_rate <= rate)
+ break;
+ }
- return parent_rate >> prog->pres;
-}
+ if (tmp_rate > rate)
+ continue;
-static long clk_programmable_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
-{
- unsigned long best_rate = *parent_rate;
- unsigned long best_diff;
- unsigned long new_diff;
- unsigned long cur_rate;
- int shift = shift;
-
- if (rate > *parent_rate)
- return *parent_rate;
- else
- best_diff = *parent_rate - rate;
-
- if (!best_diff)
- return best_rate;
-
- for (shift = 1; shift < PROG_PRES_MASK; shift++) {
- cur_rate = *parent_rate >> shift;
-
- if (cur_rate > rate)
- new_diff = cur_rate - rate;
- else
- new_diff = rate - cur_rate;
-
- if (!new_diff)
- return cur_rate;
-
- if (new_diff < best_diff) {
- best_diff = new_diff;
- best_rate = cur_rate;
+ if (best_rate < 0 || (rate - tmp_rate) < (rate - best_rate)) {
+ best_rate = tmp_rate;
+ *best_parent_rate = parent_rate;
+ *best_parent_clk = parent;
}
- if (rate > cur_rate)
+ if (!best_rate)
break;
}
@@ -146,17 +98,22 @@ static int clk_programmable_set_parent(struct clk_hw *hw, u8 index)
{
struct clk_programmable *prog = to_clk_programmable(hw);
const struct clk_programmable_layout *layout = prog->layout;
+ struct at91_pmc *pmc = prog->pmc;
+ u32 tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id)) & ~layout->css_mask;
+
+ if (layout->have_slck_mck)
+ tmp &= AT91_PMC_CSSMCK_MCK;
+
if (index > layout->css_mask) {
if (index > PROG_MAX_RM9200_CSS && layout->have_slck_mck) {
- prog->css = 0;
- prog->slckmck = 1;
+ tmp |= AT91_PMC_CSSMCK_MCK;
return 0;
} else {
return -EINVAL;
}
}
- prog->css = index;
+ pmc_write(pmc, AT91_PMC_PCKR(prog->id), tmp | index);
return 0;
}
@@ -169,13 +126,9 @@ static u8 clk_programmable_get_parent(struct clk_hw *hw)
const struct clk_programmable_layout *layout = prog->layout;
tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id));
- prog->css = tmp & layout->css_mask;
- ret = prog->css;
- if (layout->have_slck_mck) {
- prog->slckmck = !!(tmp & AT91_PMC_CSSMCK_MCK);
- if (prog->slckmck && !ret)
- ret = PROG_MAX_RM9200_CSS + 1;
- }
+ ret = tmp & layout->css_mask;
+ if (layout->have_slck_mck && (tmp & AT91_PMC_CSSMCK_MCK) && !ret)
+ ret = PROG_MAX_RM9200_CSS + 1;
return ret;
}
@@ -184,67 +137,47 @@ static int clk_programmable_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct clk_programmable *prog = to_clk_programmable(hw);
- unsigned long best_rate = parent_rate;
- unsigned long best_diff;
- unsigned long new_diff;
- unsigned long cur_rate;
+ struct at91_pmc *pmc = prog->pmc;
+ const struct clk_programmable_layout *layout = prog->layout;
+ unsigned long div = parent_rate / rate;
int shift = 0;
+ u32 tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id)) &
+ ~(PROG_PRES_MASK << layout->pres_shift);
- if (rate > parent_rate)
- return parent_rate;
- else
- best_diff = parent_rate - rate;
-
- if (!best_diff) {
- prog->pres = shift;
- return 0;
- }
+ if (!div)
+ return -EINVAL;
- for (shift = 1; shift < PROG_PRES_MASK; shift++) {
- cur_rate = parent_rate >> shift;
+ shift = fls(div) - 1;
- if (cur_rate > rate)
- new_diff = cur_rate - rate;
- else
- new_diff = rate - cur_rate;
+ if (div != (1<<shift))
+ return -EINVAL;
- if (!new_diff)
- break;
+ if (shift >= PROG_PRES_MASK)
+ return -EINVAL;
- if (new_diff < best_diff) {
- best_diff = new_diff;
- best_rate = cur_rate;
- }
+ pmc_write(pmc, AT91_PMC_PCKR(prog->id),
+ tmp | (shift << layout->pres_shift));
- if (rate > cur_rate)
- break;
- }
-
- prog->pres = shift;
return 0;
}
static const struct clk_ops programmable_ops = {
- .prepare = clk_programmable_prepare,
- .is_prepared = clk_programmable_is_ready,
.recalc_rate = clk_programmable_recalc_rate,
- .round_rate = clk_programmable_round_rate,
+ .determine_rate = clk_programmable_determine_rate,
.get_parent = clk_programmable_get_parent,
.set_parent = clk_programmable_set_parent,
.set_rate = clk_programmable_set_rate,
};
static struct clk * __init
-at91_clk_register_programmable(struct at91_pmc *pmc, unsigned int irq,
+at91_clk_register_programmable(struct at91_pmc *pmc,
const char *name, const char **parent_names,
u8 num_parents, u8 id,
const struct clk_programmable_layout *layout)
{
- int ret;
struct clk_programmable *prog;
struct clk *clk = NULL;
struct clk_init_data init;
- char irq_name[11];
if (id > PROG_ID_MAX)
return ERR_PTR(-EINVAL);
@@ -263,14 +196,6 @@ at91_clk_register_programmable(struct at91_pmc *pmc, unsigned int irq,
prog->layout = layout;
prog->hw.init = &init;
prog->pmc = pmc;
- prog->irq = irq;
- init_waitqueue_head(&prog->wait);
- irq_set_status_flags(prog->irq, IRQ_NOAUTOEN);
- snprintf(irq_name, sizeof(irq_name), "clk-prog%d", id);
- ret = request_irq(prog->irq, clk_programmable_irq_handler,
- IRQF_TRIGGER_HIGH, irq_name, prog);
- if (ret)
- return ERR_PTR(ret);
clk = clk_register(NULL, &prog->hw);
if (IS_ERR(clk))
@@ -304,7 +229,6 @@ of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
int num;
u32 id;
int i;
- unsigned int irq;
struct clk *clk;
int num_parents;
const char *parent_names[PROG_SOURCE_MAX];
@@ -332,11 +256,7 @@ of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
if (of_property_read_string(np, "clock-output-names", &name))
name = progclknp->name;
- irq = irq_of_parse_and_map(progclknp, 0);
- if (!irq)
- continue;
-
- clk = at91_clk_register_programmable(pmc, irq, name,
+ clk = at91_clk_register_programmable(pmc, name,
parent_names, num_parents,
id, layout);
if (IS_ERR(clk))
diff --git a/drivers/clk/at91/clk-system.c b/drivers/clk/at91/clk-system.c
index 8f7c0434a09f..8c96307d7363 100644
--- a/drivers/clk/at91/clk-system.c
+++ b/drivers/clk/at91/clk-system.c
@@ -14,6 +14,11 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/of_irq.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
#include "pmc.h"
@@ -25,19 +30,48 @@
struct clk_system {
struct clk_hw hw;
struct at91_pmc *pmc;
+ unsigned int irq;
+ wait_queue_head_t wait;
u8 id;
};
-static int clk_system_enable(struct clk_hw *hw)
+static inline int is_pck(int id)
+{
+ return (id >= 8) && (id <= 15);
+}
+static irqreturn_t clk_system_irq_handler(int irq, void *dev_id)
+{
+ struct clk_system *sys = (struct clk_system *)dev_id;
+
+ wake_up(&sys->wait);
+ disable_irq_nosync(sys->irq);
+
+ return IRQ_HANDLED;
+}
+
+static int clk_system_prepare(struct clk_hw *hw)
{
struct clk_system *sys = to_clk_system(hw);
struct at91_pmc *pmc = sys->pmc;
+ u32 mask = 1 << sys->id;
- pmc_write(pmc, AT91_PMC_SCER, 1 << sys->id);
+ pmc_write(pmc, AT91_PMC_SCER, mask);
+
+ if (!is_pck(sys->id))
+ return 0;
+
+ while (!(pmc_read(pmc, AT91_PMC_SR) & mask)) {
+ if (sys->irq) {
+ enable_irq(sys->irq);
+ wait_event(sys->wait,
+ pmc_read(pmc, AT91_PMC_SR) & mask);
+ } else
+ cpu_relax();
+ }
return 0;
}
-static void clk_system_disable(struct clk_hw *hw)
+static void clk_system_unprepare(struct clk_hw *hw)
{
struct clk_system *sys = to_clk_system(hw);
struct at91_pmc *pmc = sys->pmc;
@@ -45,27 +79,34 @@ static void clk_system_disable(struct clk_hw *hw)
pmc_write(pmc, AT91_PMC_SCDR, 1 << sys->id);
}
-static int clk_system_is_enabled(struct clk_hw *hw)
+static int clk_system_is_prepared(struct clk_hw *hw)
{
struct clk_system *sys = to_clk_system(hw);
struct at91_pmc *pmc = sys->pmc;
- return !!(pmc_read(pmc, AT91_PMC_SCSR) & (1 << sys->id));
+ if (!(pmc_read(pmc, AT91_PMC_SCSR) & (1 << sys->id)))
+ return 0;
+
+ if (!is_pck(sys->id))
+ return 1;
+
+ return !!(pmc_read(pmc, AT91_PMC_SR) & (1 << sys->id));
}
static const struct clk_ops system_ops = {
- .enable = clk_system_enable,
- .disable = clk_system_disable,
- .is_enabled = clk_system_is_enabled,
+ .prepare = clk_system_prepare,
+ .unprepare = clk_system_unprepare,
+ .is_prepared = clk_system_is_prepared,
};
static struct clk * __init
at91_clk_register_system(struct at91_pmc *pmc, const char *name,
- const char *parent_name, u8 id)
+ const char *parent_name, u8 id, int irq)
{
struct clk_system *sys;
struct clk *clk = NULL;
struct clk_init_data init;
+ int ret;
if (!parent_name || id > SYSTEM_MAX_ID)
return ERR_PTR(-EINVAL);
@@ -84,11 +125,20 @@ at91_clk_register_system(struct at91_pmc *pmc, const char *name,
* (see drivers/memory) which would request and enable the ddrck clock.
* When this is done we will be able to remove CLK_IGNORE_UNUSED flag.
*/
- init.flags = CLK_IGNORE_UNUSED;
+ init.flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED;
sys->id = id;
sys->hw.init = &init;
sys->pmc = pmc;
+ sys->irq = irq;
+ if (irq) {
+ init_waitqueue_head(&sys->wait);
+ irq_set_status_flags(sys->irq, IRQ_NOAUTOEN);
+ ret = request_irq(sys->irq, clk_system_irq_handler,
+ IRQF_TRIGGER_HIGH, name, sys);
+ if (ret)
+ return ERR_PTR(ret);
+ }
clk = clk_register(NULL, &sys->hw);
if (IS_ERR(clk))
@@ -101,6 +151,7 @@ static void __init
of_at91_clk_sys_setup(struct device_node *np, struct at91_pmc *pmc)
{
int num;
+ int irq = 0;
u32 id;
struct clk *clk;
const char *name;
@@ -118,9 +169,12 @@ of_at91_clk_sys_setup(struct device_node *np, struct at91_pmc *pmc)
if (of_property_read_string(np, "clock-output-names", &name))
name = sysclknp->name;
+ if (is_pck(id))
+ irq = irq_of_parse_and_map(sysclknp, 0);
+
parent_name = of_clk_get_parent_name(sysclknp, 0);
- clk = at91_clk_register_system(pmc, name, parent_name, id);
+ clk = at91_clk_register_system(pmc, name, parent_name, id, irq);
if (IS_ERR(clk))
continue;
diff --git a/drivers/clk/bcm/Kconfig b/drivers/clk/bcm/Kconfig
new file mode 100644
index 000000000000..a7262fb8ce55
--- /dev/null
+++ b/drivers/clk/bcm/Kconfig
@@ -0,0 +1,9 @@
+config CLK_BCM_KONA
+ bool "Broadcom Kona CCU clock support"
+ depends on ARCH_BCM_MOBILE
+ depends on COMMON_CLK
+ default y
+ help
+ Enable common clock framework support for Broadcom SoCs
+ using "Kona" style clock control units, including those
+ in the BCM281xx family.
diff --git a/drivers/clk/bcm/Makefile b/drivers/clk/bcm/Makefile
new file mode 100644
index 000000000000..cf93359aa862
--- /dev/null
+++ b/drivers/clk/bcm/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_CLK_BCM_KONA) += clk-kona.o
+obj-$(CONFIG_CLK_BCM_KONA) += clk-kona-setup.o
+obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm281xx.o
diff --git a/drivers/clk/bcm/clk-bcm281xx.c b/drivers/clk/bcm/clk-bcm281xx.c
new file mode 100644
index 000000000000..3c66de696aeb
--- /dev/null
+++ b/drivers/clk/bcm/clk-bcm281xx.c
@@ -0,0 +1,416 @@
+/*
+ * Copyright (C) 2013 Broadcom Corporation
+ * Copyright 2013 Linaro Limited
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "clk-kona.h"
+#include "dt-bindings/clock/bcm281xx.h"
+
+/* bcm11351 CCU device tree "compatible" strings */
+#define BCM11351_DT_ROOT_CCU_COMPAT "brcm,bcm11351-root-ccu"
+#define BCM11351_DT_AON_CCU_COMPAT "brcm,bcm11351-aon-ccu"
+#define BCM11351_DT_HUB_CCU_COMPAT "brcm,bcm11351-hub-ccu"
+#define BCM11351_DT_MASTER_CCU_COMPAT "brcm,bcm11351-master-ccu"
+#define BCM11351_DT_SLAVE_CCU_COMPAT "brcm,bcm11351-slave-ccu"
+
+/* Root CCU clocks */
+
+static struct peri_clk_data frac_1m_data = {
+ .gate = HW_SW_GATE(0x214, 16, 0, 1),
+ .trig = TRIGGER(0x0e04, 0),
+ .div = FRAC_DIVIDER(0x0e00, 0, 22, 16),
+ .clocks = CLOCKS("ref_crystal"),
+};
+
+/* AON CCU clocks */
+
+static struct peri_clk_data hub_timer_data = {
+ .gate = HW_SW_GATE(0x0414, 16, 0, 1),
+ .clocks = CLOCKS("bbl_32k",
+ "frac_1m",
+ "dft_19_5m"),
+ .sel = SELECTOR(0x0a10, 0, 2),
+ .trig = TRIGGER(0x0a40, 4),
+};
+
+static struct peri_clk_data pmu_bsc_data = {
+ .gate = HW_SW_GATE(0x0418, 16, 0, 1),
+ .clocks = CLOCKS("ref_crystal",
+ "pmu_bsc_var",
+ "bbl_32k"),
+ .sel = SELECTOR(0x0a04, 0, 2),
+ .div = DIVIDER(0x0a04, 3, 4),
+ .trig = TRIGGER(0x0a40, 0),
+};
+
+static struct peri_clk_data pmu_bsc_var_data = {
+ .clocks = CLOCKS("var_312m",
+ "ref_312m"),
+ .sel = SELECTOR(0x0a00, 0, 2),
+ .div = DIVIDER(0x0a00, 4, 5),
+ .trig = TRIGGER(0x0a40, 2),
+};
+
+/* Hub CCU clocks */
+
+static struct peri_clk_data tmon_1m_data = {
+ .gate = HW_SW_GATE(0x04a4, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "frac_1m"),
+ .sel = SELECTOR(0x0e74, 0, 2),
+ .trig = TRIGGER(0x0e84, 1),
+};
+
+/* Master CCU clocks */
+
+static struct peri_clk_data sdio1_data = {
+ .gate = HW_SW_GATE(0x0358, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_52m",
+ "ref_52m",
+ "var_96m",
+ "ref_96m"),
+ .sel = SELECTOR(0x0a28, 0, 3),
+ .div = DIVIDER(0x0a28, 4, 14),
+ .trig = TRIGGER(0x0afc, 9),
+};
+
+static struct peri_clk_data sdio2_data = {
+ .gate = HW_SW_GATE(0x035c, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_52m",
+ "ref_52m",
+ "var_96m",
+ "ref_96m"),
+ .sel = SELECTOR(0x0a2c, 0, 3),
+ .div = DIVIDER(0x0a2c, 4, 14),
+ .trig = TRIGGER(0x0afc, 10),
+};
+
+static struct peri_clk_data sdio3_data = {
+ .gate = HW_SW_GATE(0x0364, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_52m",
+ "ref_52m",
+ "var_96m",
+ "ref_96m"),
+ .sel = SELECTOR(0x0a34, 0, 3),
+ .div = DIVIDER(0x0a34, 4, 14),
+ .trig = TRIGGER(0x0afc, 12),
+};
+
+static struct peri_clk_data sdio4_data = {
+ .gate = HW_SW_GATE(0x0360, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_52m",
+ "ref_52m",
+ "var_96m",
+ "ref_96m"),
+ .sel = SELECTOR(0x0a30, 0, 3),
+ .div = DIVIDER(0x0a30, 4, 14),
+ .trig = TRIGGER(0x0afc, 11),
+};
+
+static struct peri_clk_data usb_ic_data = {
+ .gate = HW_SW_GATE(0x0354, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_96m",
+ "ref_96m"),
+ .div = FIXED_DIVIDER(2),
+ .sel = SELECTOR(0x0a24, 0, 2),
+ .trig = TRIGGER(0x0afc, 7),
+};
+
+/* also called usbh_48m */
+static struct peri_clk_data hsic2_48m_data = {
+ .gate = HW_SW_GATE(0x0370, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_96m",
+ "ref_96m"),
+ .sel = SELECTOR(0x0a38, 0, 2),
+ .div = FIXED_DIVIDER(2),
+ .trig = TRIGGER(0x0afc, 5),
+};
+
+/* also called usbh_12m */
+static struct peri_clk_data hsic2_12m_data = {
+ .gate = HW_SW_GATE(0x0370, 20, 4, 5),
+ .div = DIVIDER(0x0a38, 12, 2),
+ .clocks = CLOCKS("ref_crystal",
+ "var_96m",
+ "ref_96m"),
+ .pre_div = FIXED_DIVIDER(2),
+ .sel = SELECTOR(0x0a38, 0, 2),
+ .trig = TRIGGER(0x0afc, 5),
+};
+
+/* Slave CCU clocks */
+
+static struct peri_clk_data uartb_data = {
+ .gate = HW_SW_GATE(0x0400, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_156m",
+ "ref_156m"),
+ .sel = SELECTOR(0x0a10, 0, 2),
+ .div = FRAC_DIVIDER(0x0a10, 4, 12, 8),
+ .trig = TRIGGER(0x0afc, 2),
+};
+
+static struct peri_clk_data uartb2_data = {
+ .gate = HW_SW_GATE(0x0404, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_156m",
+ "ref_156m"),
+ .sel = SELECTOR(0x0a14, 0, 2),
+ .div = FRAC_DIVIDER(0x0a14, 4, 12, 8),
+ .trig = TRIGGER(0x0afc, 3),
+};
+
+static struct peri_clk_data uartb3_data = {
+ .gate = HW_SW_GATE(0x0408, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_156m",
+ "ref_156m"),
+ .sel = SELECTOR(0x0a18, 0, 2),
+ .div = FRAC_DIVIDER(0x0a18, 4, 12, 8),
+ .trig = TRIGGER(0x0afc, 4),
+};
+
+static struct peri_clk_data uartb4_data = {
+ .gate = HW_SW_GATE(0x0408, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_156m",
+ "ref_156m"),
+ .sel = SELECTOR(0x0a1c, 0, 2),
+ .div = FRAC_DIVIDER(0x0a1c, 4, 12, 8),
+ .trig = TRIGGER(0x0afc, 5),
+};
+
+static struct peri_clk_data ssp0_data = {
+ .gate = HW_SW_GATE(0x0410, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_104m",
+ "ref_104m",
+ "var_96m",
+ "ref_96m"),
+ .sel = SELECTOR(0x0a20, 0, 3),
+ .div = DIVIDER(0x0a20, 4, 14),
+ .trig = TRIGGER(0x0afc, 6),
+};
+
+static struct peri_clk_data ssp2_data = {
+ .gate = HW_SW_GATE(0x0418, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_104m",
+ "ref_104m",
+ "var_96m",
+ "ref_96m"),
+ .sel = SELECTOR(0x0a28, 0, 3),
+ .div = DIVIDER(0x0a28, 4, 14),
+ .trig = TRIGGER(0x0afc, 8),
+};
+
+static struct peri_clk_data bsc1_data = {
+ .gate = HW_SW_GATE(0x0458, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_104m",
+ "ref_104m",
+ "var_13m",
+ "ref_13m"),
+ .sel = SELECTOR(0x0a64, 0, 3),
+ .trig = TRIGGER(0x0afc, 23),
+};
+
+static struct peri_clk_data bsc2_data = {
+ .gate = HW_SW_GATE(0x045c, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_104m",
+ "ref_104m",
+ "var_13m",
+ "ref_13m"),
+ .sel = SELECTOR(0x0a68, 0, 3),
+ .trig = TRIGGER(0x0afc, 24),
+};
+
+static struct peri_clk_data bsc3_data = {
+ .gate = HW_SW_GATE(0x0484, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_104m",
+ "ref_104m",
+ "var_13m",
+ "ref_13m"),
+ .sel = SELECTOR(0x0a84, 0, 3),
+ .trig = TRIGGER(0x0b00, 2),
+};
+
+static struct peri_clk_data pwm_data = {
+ .gate = HW_SW_GATE(0x0468, 18, 2, 3),
+ .clocks = CLOCKS("ref_crystal",
+ "var_104m"),
+ .sel = SELECTOR(0x0a70, 0, 2),
+ .div = DIVIDER(0x0a70, 4, 3),
+ .trig = TRIGGER(0x0afc, 15),
+};
+
+/*
+ * CCU setup routines
+ *
+ * These are called from kona_dt_ccu_setup() to initialize the array
+ * of clocks provided by the CCU. Once allocated, the entries in
+ * the array are initialized by calling kona_clk_setup() with the
+ * initialization data for each clock. They return 0 if successful
+ * or an error code otherwise.
+ */
+static int __init bcm281xx_root_ccu_clks_setup(struct ccu_data *ccu)
+{
+ struct clk **clks;
+ size_t count = BCM281XX_ROOT_CCU_CLOCK_COUNT;
+
+ clks = kzalloc(count * sizeof(*clks), GFP_KERNEL);
+ if (!clks) {
+ pr_err("%s: failed to allocate root clocks\n", __func__);
+ return -ENOMEM;
+ }
+ ccu->data.clks = clks;
+ ccu->data.clk_num = count;
+
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_ROOT_CCU_FRAC_1M, frac_1m);
+
+ return 0;
+}
+
+static int __init bcm281xx_aon_ccu_clks_setup(struct ccu_data *ccu)
+{
+ struct clk **clks;
+ size_t count = BCM281XX_AON_CCU_CLOCK_COUNT;
+
+ clks = kzalloc(count * sizeof(*clks), GFP_KERNEL);
+ if (!clks) {
+ pr_err("%s: failed to allocate aon clocks\n", __func__);
+ return -ENOMEM;
+ }
+ ccu->data.clks = clks;
+ ccu->data.clk_num = count;
+
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_AON_CCU_HUB_TIMER, hub_timer);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_AON_CCU_PMU_BSC, pmu_bsc);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_AON_CCU_PMU_BSC_VAR, pmu_bsc_var);
+
+ return 0;
+}
+
+static int __init bcm281xx_hub_ccu_clks_setup(struct ccu_data *ccu)
+{
+ struct clk **clks;
+ size_t count = BCM281XX_HUB_CCU_CLOCK_COUNT;
+
+ clks = kzalloc(count * sizeof(*clks), GFP_KERNEL);
+ if (!clks) {
+ pr_err("%s: failed to allocate hub clocks\n", __func__);
+ return -ENOMEM;
+ }
+ ccu->data.clks = clks;
+ ccu->data.clk_num = count;
+
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_HUB_CCU_TMON_1M, tmon_1m);
+
+ return 0;
+}
+
+static int __init bcm281xx_master_ccu_clks_setup(struct ccu_data *ccu)
+{
+ struct clk **clks;
+ size_t count = BCM281XX_MASTER_CCU_CLOCK_COUNT;
+
+ clks = kzalloc(count * sizeof(*clks), GFP_KERNEL);
+ if (!clks) {
+ pr_err("%s: failed to allocate master clocks\n", __func__);
+ return -ENOMEM;
+ }
+ ccu->data.clks = clks;
+ ccu->data.clk_num = count;
+
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_MASTER_CCU_SDIO1, sdio1);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_MASTER_CCU_SDIO2, sdio2);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_MASTER_CCU_SDIO3, sdio3);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_MASTER_CCU_SDIO4, sdio4);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_MASTER_CCU_USB_IC, usb_ic);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_MASTER_CCU_HSIC2_48M, hsic2_48m);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_MASTER_CCU_HSIC2_12M, hsic2_12m);
+
+ return 0;
+}
+
+static int __init bcm281xx_slave_ccu_clks_setup(struct ccu_data *ccu)
+{
+ struct clk **clks;
+ size_t count = BCM281XX_SLAVE_CCU_CLOCK_COUNT;
+
+ clks = kzalloc(count * sizeof(*clks), GFP_KERNEL);
+ if (!clks) {
+ pr_err("%s: failed to allocate slave clocks\n", __func__);
+ return -ENOMEM;
+ }
+ ccu->data.clks = clks;
+ ccu->data.clk_num = count;
+
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_UARTB, uartb);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_UARTB2, uartb2);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_UARTB3, uartb3);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_UARTB4, uartb4);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_SSP0, ssp0);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_SSP2, ssp2);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_BSC1, bsc1);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_BSC2, bsc2);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_BSC3, bsc3);
+ PERI_CLK_SETUP(clks, ccu, BCM281XX_SLAVE_CCU_PWM, pwm);
+
+ return 0;
+}
+
+/* Device tree match table callback functions */
+
+static void __init kona_dt_root_ccu_setup(struct device_node *node)
+{
+ kona_dt_ccu_setup(node, bcm281xx_root_ccu_clks_setup);
+}
+
+static void __init kona_dt_aon_ccu_setup(struct device_node *node)
+{
+ kona_dt_ccu_setup(node, bcm281xx_aon_ccu_clks_setup);
+}
+
+static void __init kona_dt_hub_ccu_setup(struct device_node *node)
+{
+ kona_dt_ccu_setup(node, bcm281xx_hub_ccu_clks_setup);
+}
+
+static void __init kona_dt_master_ccu_setup(struct device_node *node)
+{
+ kona_dt_ccu_setup(node, bcm281xx_master_ccu_clks_setup);
+}
+
+static void __init kona_dt_slave_ccu_setup(struct device_node *node)
+{
+ kona_dt_ccu_setup(node, bcm281xx_slave_ccu_clks_setup);
+}
+
+CLK_OF_DECLARE(bcm11351_root_ccu, BCM11351_DT_ROOT_CCU_COMPAT,
+ kona_dt_root_ccu_setup);
+CLK_OF_DECLARE(bcm11351_aon_ccu, BCM11351_DT_AON_CCU_COMPAT,
+ kona_dt_aon_ccu_setup);
+CLK_OF_DECLARE(bcm11351_hub_ccu, BCM11351_DT_HUB_CCU_COMPAT,
+ kona_dt_hub_ccu_setup);
+CLK_OF_DECLARE(bcm11351_master_ccu, BCM11351_DT_MASTER_CCU_COMPAT,
+ kona_dt_master_ccu_setup);
+CLK_OF_DECLARE(bcm11351_slave_ccu, BCM11351_DT_SLAVE_CCU_COMPAT,
+ kona_dt_slave_ccu_setup);
diff --git a/drivers/clk/bcm/clk-kona-setup.c b/drivers/clk/bcm/clk-kona-setup.c
new file mode 100644
index 000000000000..c7607feb18dd
--- /dev/null
+++ b/drivers/clk/bcm/clk-kona-setup.c
@@ -0,0 +1,769 @@
+/*
+ * Copyright (C) 2013 Broadcom Corporation
+ * Copyright 2013 Linaro Limited
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/io.h>
+#include <linux/of_address.h>
+
+#include "clk-kona.h"
+
+/* These are used when a selector or trigger is found to be unneeded */
+#define selector_clear_exists(sel) ((sel)->width = 0)
+#define trigger_clear_exists(trig) FLAG_CLEAR(trig, TRIG, EXISTS)
+
+LIST_HEAD(ccu_list); /* The list of set up CCUs */
+
+/* Validity checking */
+
+static bool clk_requires_trigger(struct kona_clk *bcm_clk)
+{
+ struct peri_clk_data *peri = bcm_clk->peri;
+ struct bcm_clk_sel *sel;
+ struct bcm_clk_div *div;
+
+ if (bcm_clk->type != bcm_clk_peri)
+ return false;
+
+ sel = &peri->sel;
+ if (sel->parent_count && selector_exists(sel))
+ return true;
+
+ div = &peri->div;
+ if (!divider_exists(div))
+ return false;
+
+ /* Fixed dividers don't need triggers */
+ if (!divider_is_fixed(div))
+ return true;
+
+ div = &peri->pre_div;
+
+ return divider_exists(div) && !divider_is_fixed(div);
+}
+
+static bool peri_clk_data_offsets_valid(struct kona_clk *bcm_clk)
+{
+ struct peri_clk_data *peri;
+ struct bcm_clk_gate *gate;
+ struct bcm_clk_div *div;
+ struct bcm_clk_sel *sel;
+ struct bcm_clk_trig *trig;
+ const char *name;
+ u32 range;
+ u32 limit;
+
+ BUG_ON(bcm_clk->type != bcm_clk_peri);
+ peri = bcm_clk->peri;
+ name = bcm_clk->name;
+ range = bcm_clk->ccu->range;
+
+ limit = range - sizeof(u32);
+ limit = round_down(limit, sizeof(u32));
+
+ gate = &peri->gate;
+ if (gate_exists(gate)) {
+ if (gate->offset > limit) {
+ pr_err("%s: bad gate offset for %s (%u > %u)\n",
+ __func__, name, gate->offset, limit);
+ return false;
+ }
+ }
+
+ div = &peri->div;
+ if (divider_exists(div)) {
+ if (div->offset > limit) {
+ pr_err("%s: bad divider offset for %s (%u > %u)\n",
+ __func__, name, div->offset, limit);
+ return false;
+ }
+ }
+
+ div = &peri->pre_div;
+ if (divider_exists(div)) {
+ if (div->offset > limit) {
+ pr_err("%s: bad pre-divider offset for %s "
+ "(%u > %u)\n",
+ __func__, name, div->offset, limit);
+ return false;
+ }
+ }
+
+ sel = &peri->sel;
+ if (selector_exists(sel)) {
+ if (sel->offset > limit) {
+ pr_err("%s: bad selector offset for %s (%u > %u)\n",
+ __func__, name, sel->offset, limit);
+ return false;
+ }
+ }
+
+ trig = &peri->trig;
+ if (trigger_exists(trig)) {
+ if (trig->offset > limit) {
+ pr_err("%s: bad trigger offset for %s (%u > %u)\n",
+ __func__, name, trig->offset, limit);
+ return false;
+ }
+ }
+
+ trig = &peri->pre_trig;
+ if (trigger_exists(trig)) {
+ if (trig->offset > limit) {
+ pr_err("%s: bad pre-trigger offset for %s (%u > %u)\n",
+ __func__, name, trig->offset, limit);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* A bit position must be less than the number of bits in a 32-bit register. */
+static bool bit_posn_valid(u32 bit_posn, const char *field_name,
+ const char *clock_name)
+{
+ u32 limit = BITS_PER_BYTE * sizeof(u32) - 1;
+
+ if (bit_posn > limit) {
+ pr_err("%s: bad %s bit for %s (%u > %u)\n", __func__,
+ field_name, clock_name, bit_posn, limit);
+ return false;
+ }
+ return true;
+}
+
+/*
+ * A bitfield must be at least 1 bit wide. Both the low-order and
+ * high-order bits must lie within a 32-bit register. We require
+ * fields to be less than 32 bits wide, mainly because we use
+ * shifting to produce field masks, and shifting a full word width
+ * is not well-defined by the C standard.
+ */
+static bool bitfield_valid(u32 shift, u32 width, const char *field_name,
+ const char *clock_name)
+{
+ u32 limit = BITS_PER_BYTE * sizeof(u32);
+
+ if (!width) {
+ pr_err("%s: bad %s field width 0 for %s\n", __func__,
+ field_name, clock_name);
+ return false;
+ }
+ if (shift + width > limit) {
+ pr_err("%s: bad %s for %s (%u + %u > %u)\n", __func__,
+ field_name, clock_name, shift, width, limit);
+ return false;
+ }
+ return true;
+}
+
+/*
+ * All gates, if defined, have a status bit, and for hardware-only
+ * gates, that's it. Gates that can be software controlled also
+ * have an enable bit. And a gate that can be hardware or software
+ * controlled will have a hardware/software select bit.
+ */
+static bool gate_valid(struct bcm_clk_gate *gate, const char *field_name,
+ const char *clock_name)
+{
+ if (!bit_posn_valid(gate->status_bit, "gate status", clock_name))
+ return false;
+
+ if (gate_is_sw_controllable(gate)) {
+ if (!bit_posn_valid(gate->en_bit, "gate enable", clock_name))
+ return false;
+
+ if (gate_is_hw_controllable(gate)) {
+ if (!bit_posn_valid(gate->hw_sw_sel_bit,
+ "gate hw/sw select",
+ clock_name))
+ return false;
+ }
+ } else {
+ BUG_ON(!gate_is_hw_controllable(gate));
+ }
+
+ return true;
+}
+
+/*
+ * A selector bitfield must be valid. Its parent_sel array must
+ * also be reasonable for the field.
+ */
+static bool sel_valid(struct bcm_clk_sel *sel, const char *field_name,
+ const char *clock_name)
+{
+ if (!bitfield_valid(sel->shift, sel->width, field_name, clock_name))
+ return false;
+
+ if (sel->parent_count) {
+ u32 max_sel;
+ u32 limit;
+
+ /*
+ * Make sure the selector field can hold all the
+ * selector values we expect to be able to use. A
+ * clock only needs to have a selector defined if it
+ * has more than one parent. And in that case the
+ * highest selector value will be in the last entry
+ * in the array.
+ */
+ max_sel = sel->parent_sel[sel->parent_count - 1];
+ limit = (1 << sel->width) - 1;
+ if (max_sel > limit) {
+ pr_err("%s: bad selector for %s "
+ "(%u needs > %u bits)\n",
+ __func__, clock_name, max_sel,
+ sel->width);
+ return false;
+ }
+ } else {
+ pr_warn("%s: ignoring selector for %s (no parents)\n",
+ __func__, clock_name);
+ selector_clear_exists(sel);
+ kfree(sel->parent_sel);
+ sel->parent_sel = NULL;
+ }
+
+ return true;
+}
+
+/*
+ * A fixed divider just needs to be non-zero. A variable divider
+ * has to have a valid divider bitfield, and if it has a fraction,
+ * the width of the fraction must not be no more than the width of
+ * the divider as a whole.
+ */
+static bool div_valid(struct bcm_clk_div *div, const char *field_name,
+ const char *clock_name)
+{
+ if (divider_is_fixed(div)) {
+ /* Any fixed divider value but 0 is OK */
+ if (div->fixed == 0) {
+ pr_err("%s: bad %s fixed value 0 for %s\n", __func__,
+ field_name, clock_name);
+ return false;
+ }
+ return true;
+ }
+ if (!bitfield_valid(div->shift, div->width, field_name, clock_name))
+ return false;
+
+ if (divider_has_fraction(div))
+ if (div->frac_width > div->width) {
+ pr_warn("%s: bad %s fraction width for %s (%u > %u)\n",
+ __func__, field_name, clock_name,
+ div->frac_width, div->width);
+ return false;
+ }
+
+ return true;
+}
+
+/*
+ * If a clock has two dividers, the combined number of fractional
+ * bits must be representable in a 32-bit unsigned value. This
+ * is because we scale up a dividend using both dividers before
+ * dividing to improve accuracy, and we need to avoid overflow.
+ */
+static bool kona_dividers_valid(struct kona_clk *bcm_clk)
+{
+ struct peri_clk_data *peri = bcm_clk->peri;
+ struct bcm_clk_div *div;
+ struct bcm_clk_div *pre_div;
+ u32 limit;
+
+ BUG_ON(bcm_clk->type != bcm_clk_peri);
+
+ if (!divider_exists(&peri->div) || !divider_exists(&peri->pre_div))
+ return true;
+
+ div = &peri->div;
+ pre_div = &peri->pre_div;
+ if (divider_is_fixed(div) || divider_is_fixed(pre_div))
+ return true;
+
+ limit = BITS_PER_BYTE * sizeof(u32);
+
+ return div->frac_width + pre_div->frac_width <= limit;
+}
+
+
+/* A trigger just needs to represent a valid bit position */
+static bool trig_valid(struct bcm_clk_trig *trig, const char *field_name,
+ const char *clock_name)
+{
+ return bit_posn_valid(trig->bit, field_name, clock_name);
+}
+
+/* Determine whether the set of peripheral clock registers are valid. */
+static bool
+peri_clk_data_valid(struct kona_clk *bcm_clk)
+{
+ struct peri_clk_data *peri;
+ struct bcm_clk_gate *gate;
+ struct bcm_clk_sel *sel;
+ struct bcm_clk_div *div;
+ struct bcm_clk_div *pre_div;
+ struct bcm_clk_trig *trig;
+ const char *name;
+
+ BUG_ON(bcm_clk->type != bcm_clk_peri);
+
+ /*
+ * First validate register offsets. This is the only place
+ * where we need something from the ccu, so we do these
+ * together.
+ */
+ if (!peri_clk_data_offsets_valid(bcm_clk))
+ return false;
+
+ peri = bcm_clk->peri;
+ name = bcm_clk->name;
+ gate = &peri->gate;
+ if (gate_exists(gate) && !gate_valid(gate, "gate", name))
+ return false;
+
+ sel = &peri->sel;
+ if (selector_exists(sel)) {
+ if (!sel_valid(sel, "selector", name))
+ return false;
+
+ } else if (sel->parent_count > 1) {
+ pr_err("%s: multiple parents but no selector for %s\n",
+ __func__, name);
+
+ return false;
+ }
+
+ div = &peri->div;
+ pre_div = &peri->pre_div;
+ if (divider_exists(div)) {
+ if (!div_valid(div, "divider", name))
+ return false;
+
+ if (divider_exists(pre_div))
+ if (!div_valid(pre_div, "pre-divider", name))
+ return false;
+ } else if (divider_exists(pre_div)) {
+ pr_err("%s: pre-divider but no divider for %s\n", __func__,
+ name);
+ return false;
+ }
+
+ trig = &peri->trig;
+ if (trigger_exists(trig)) {
+ if (!trig_valid(trig, "trigger", name))
+ return false;
+
+ if (trigger_exists(&peri->pre_trig)) {
+ if (!trig_valid(trig, "pre-trigger", name)) {
+ return false;
+ }
+ }
+ if (!clk_requires_trigger(bcm_clk)) {
+ pr_warn("%s: ignoring trigger for %s (not needed)\n",
+ __func__, name);
+ trigger_clear_exists(trig);
+ }
+ } else if (trigger_exists(&peri->pre_trig)) {
+ pr_err("%s: pre-trigger but no trigger for %s\n", __func__,
+ name);
+ return false;
+ } else if (clk_requires_trigger(bcm_clk)) {
+ pr_err("%s: required trigger missing for %s\n", __func__,
+ name);
+ return false;
+ }
+
+ return kona_dividers_valid(bcm_clk);
+}
+
+static bool kona_clk_valid(struct kona_clk *bcm_clk)
+{
+ switch (bcm_clk->type) {
+ case bcm_clk_peri:
+ if (!peri_clk_data_valid(bcm_clk))
+ return false;
+ break;
+ default:
+ pr_err("%s: unrecognized clock type (%d)\n", __func__,
+ (int)bcm_clk->type);
+ return false;
+ }
+ return true;
+}
+
+/*
+ * Scan an array of parent clock names to determine whether there
+ * are any entries containing BAD_CLK_NAME. Such entries are
+ * placeholders for non-supported clocks. Keep track of the
+ * position of each clock name in the original array.
+ *
+ * Allocates an array of pointers to to hold the names of all
+ * non-null entries in the original array, and returns a pointer to
+ * that array in *names. This will be used for registering the
+ * clock with the common clock code. On successful return,
+ * *count indicates how many entries are in that names array.
+ *
+ * If there is more than one entry in the resulting names array,
+ * another array is allocated to record the parent selector value
+ * for each (defined) parent clock. This is the value that
+ * represents this parent clock in the clock's source selector
+ * register. The position of the clock in the original parent array
+ * defines that selector value. The number of entries in this array
+ * is the same as the number of entries in the parent names array.
+ *
+ * The array of selector values is returned. If the clock has no
+ * parents, no selector is required and a null pointer is returned.
+ *
+ * Returns a null pointer if the clock names array supplied was
+ * null. (This is not an error.)
+ *
+ * Returns a pointer-coded error if an error occurs.
+ */
+static u32 *parent_process(const char *clocks[],
+ u32 *count, const char ***names)
+{
+ static const char **parent_names;
+ static u32 *parent_sel;
+ const char **clock;
+ u32 parent_count;
+ u32 bad_count = 0;
+ u32 orig_count;
+ u32 i;
+ u32 j;
+
+ *count = 0; /* In case of early return */
+ *names = NULL;
+ if (!clocks)
+ return NULL;
+
+ /*
+ * Count the number of names in the null-terminated array,
+ * and find out how many of those are actually clock names.
+ */
+ for (clock = clocks; *clock; clock++)
+ if (*clock == BAD_CLK_NAME)
+ bad_count++;
+ orig_count = (u32)(clock - clocks);
+ parent_count = orig_count - bad_count;
+
+ /* If all clocks are unsupported, we treat it as no clock */
+ if (!parent_count)
+ return NULL;
+
+ /* Avoid exceeding our parent clock limit */
+ if (parent_count > PARENT_COUNT_MAX) {
+ pr_err("%s: too many parents (%u > %u)\n", __func__,
+ parent_count, PARENT_COUNT_MAX);
+ return ERR_PTR(-EINVAL);
+ }
+
+ /*
+ * There is one parent name for each defined parent clock.
+ * We also maintain an array containing the selector value
+ * for each defined clock. If there's only one clock, the
+ * selector is not required, but we allocate space for the
+ * array anyway to keep things simple.
+ */
+ parent_names = kmalloc(parent_count * sizeof(parent_names), GFP_KERNEL);
+ if (!parent_names) {
+ pr_err("%s: error allocating %u parent names\n", __func__,
+ parent_count);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* There is at least one parent, so allocate a selector array */
+
+ parent_sel = kmalloc(parent_count * sizeof(*parent_sel), GFP_KERNEL);
+ if (!parent_sel) {
+ pr_err("%s: error allocating %u parent selectors\n", __func__,
+ parent_count);
+ kfree(parent_names);
+
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* Now fill in the parent names and selector arrays */
+ for (i = 0, j = 0; i < orig_count; i++) {
+ if (clocks[i] != BAD_CLK_NAME) {
+ parent_names[j] = clocks[i];
+ parent_sel[j] = i;
+ j++;
+ }
+ }
+ *names = parent_names;
+ *count = parent_count;
+
+ return parent_sel;
+}
+
+static int
+clk_sel_setup(const char **clocks, struct bcm_clk_sel *sel,
+ struct clk_init_data *init_data)
+{
+ const char **parent_names = NULL;
+ u32 parent_count = 0;
+ u32 *parent_sel;
+
+ /*
+ * If a peripheral clock has multiple parents, the value
+ * used by the hardware to select that parent is represented
+ * by the parent clock's position in the "clocks" list. Some
+ * values don't have defined or supported clocks; these will
+ * have BAD_CLK_NAME entries in the parents[] array. The
+ * list is terminated by a NULL entry.
+ *
+ * We need to supply (only) the names of defined parent
+ * clocks when registering a clock though, so we use an
+ * array of parent selector values to map between the
+ * indexes the common clock code uses and the selector
+ * values we need.
+ */
+ parent_sel = parent_process(clocks, &parent_count, &parent_names);
+ if (IS_ERR(parent_sel)) {
+ int ret = PTR_ERR(parent_sel);
+
+ pr_err("%s: error processing parent clocks for %s (%d)\n",
+ __func__, init_data->name, ret);
+
+ return ret;
+ }
+
+ init_data->parent_names = parent_names;
+ init_data->num_parents = parent_count;
+
+ sel->parent_count = parent_count;
+ sel->parent_sel = parent_sel;
+
+ return 0;
+}
+
+static void clk_sel_teardown(struct bcm_clk_sel *sel,
+ struct clk_init_data *init_data)
+{
+ kfree(sel->parent_sel);
+ sel->parent_sel = NULL;
+ sel->parent_count = 0;
+
+ init_data->num_parents = 0;
+ kfree(init_data->parent_names);
+ init_data->parent_names = NULL;
+}
+
+static void peri_clk_teardown(struct peri_clk_data *data,
+ struct clk_init_data *init_data)
+{
+ clk_sel_teardown(&data->sel, init_data);
+ init_data->ops = NULL;
+}
+
+/*
+ * Caller is responsible for freeing the parent_names[] and
+ * parent_sel[] arrays in the peripheral clock's "data" structure
+ * that can be assigned if the clock has one or more parent clocks
+ * associated with it.
+ */
+static int peri_clk_setup(struct ccu_data *ccu, struct peri_clk_data *data,
+ struct clk_init_data *init_data)
+{
+ init_data->ops = &kona_peri_clk_ops;
+ init_data->flags = CLK_IGNORE_UNUSED;
+
+ return clk_sel_setup(data->clocks, &data->sel, init_data);
+}
+
+static void bcm_clk_teardown(struct kona_clk *bcm_clk)
+{
+ switch (bcm_clk->type) {
+ case bcm_clk_peri:
+ peri_clk_teardown(bcm_clk->data, &bcm_clk->init_data);
+ break;
+ default:
+ break;
+ }
+ bcm_clk->data = NULL;
+ bcm_clk->type = bcm_clk_none;
+}
+
+static void kona_clk_teardown(struct clk *clk)
+{
+ struct clk_hw *hw;
+ struct kona_clk *bcm_clk;
+
+ if (!clk)
+ return;
+
+ hw = __clk_get_hw(clk);
+ if (!hw) {
+ pr_err("%s: clk %p has null hw pointer\n", __func__, clk);
+ return;
+ }
+ clk_unregister(clk);
+
+ bcm_clk = to_kona_clk(hw);
+ bcm_clk_teardown(bcm_clk);
+}
+
+struct clk *kona_clk_setup(struct ccu_data *ccu, const char *name,
+ enum bcm_clk_type type, void *data)
+{
+ struct kona_clk *bcm_clk;
+ struct clk_init_data *init_data;
+ struct clk *clk = NULL;
+
+ bcm_clk = kzalloc(sizeof(*bcm_clk), GFP_KERNEL);
+ if (!bcm_clk) {
+ pr_err("%s: failed to allocate bcm_clk for %s\n", __func__,
+ name);
+ return NULL;
+ }
+ bcm_clk->ccu = ccu;
+ bcm_clk->name = name;
+
+ init_data = &bcm_clk->init_data;
+ init_data->name = name;
+ switch (type) {
+ case bcm_clk_peri:
+ if (peri_clk_setup(ccu, data, init_data))
+ goto out_free;
+ break;
+ default:
+ data = NULL;
+ break;
+ }
+ bcm_clk->type = type;
+ bcm_clk->data = data;
+
+ /* Make sure everything makes sense before we set it up */
+ if (!kona_clk_valid(bcm_clk)) {
+ pr_err("%s: clock data invalid for %s\n", __func__, name);
+ goto out_teardown;
+ }
+
+ bcm_clk->hw.init = init_data;
+ clk = clk_register(NULL, &bcm_clk->hw);
+ if (IS_ERR(clk)) {
+ pr_err("%s: error registering clock %s (%ld)\n", __func__,
+ name, PTR_ERR(clk));
+ goto out_teardown;
+ }
+ BUG_ON(!clk);
+
+ return clk;
+out_teardown:
+ bcm_clk_teardown(bcm_clk);
+out_free:
+ kfree(bcm_clk);
+
+ return NULL;
+}
+
+static void ccu_clks_teardown(struct ccu_data *ccu)
+{
+ u32 i;
+
+ for (i = 0; i < ccu->data.clk_num; i++)
+ kona_clk_teardown(ccu->data.clks[i]);
+ kfree(ccu->data.clks);
+}
+
+static void kona_ccu_teardown(struct ccu_data *ccu)
+{
+ if (!ccu)
+ return;
+
+ if (!ccu->base)
+ goto done;
+
+ of_clk_del_provider(ccu->node); /* safe if never added */
+ ccu_clks_teardown(ccu);
+ list_del(&ccu->links);
+ of_node_put(ccu->node);
+ iounmap(ccu->base);
+done:
+ kfree(ccu->name);
+ kfree(ccu);
+}
+
+/*
+ * Set up a CCU. Call the provided ccu_clks_setup callback to
+ * initialize the array of clocks provided by the CCU.
+ */
+void __init kona_dt_ccu_setup(struct device_node *node,
+ int (*ccu_clks_setup)(struct ccu_data *))
+{
+ struct ccu_data *ccu;
+ struct resource res = { 0 };
+ resource_size_t range;
+ int ret;
+
+ ccu = kzalloc(sizeof(*ccu), GFP_KERNEL);
+ if (ccu)
+ ccu->name = kstrdup(node->name, GFP_KERNEL);
+ if (!ccu || !ccu->name) {
+ pr_err("%s: unable to allocate CCU struct for %s\n",
+ __func__, node->name);
+ kfree(ccu);
+
+ return;
+ }
+
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret) {
+ pr_err("%s: no valid CCU registers found for %s\n", __func__,
+ node->name);
+ goto out_err;
+ }
+
+ range = resource_size(&res);
+ if (range > (resource_size_t)U32_MAX) {
+ pr_err("%s: address range too large for %s\n", __func__,
+ node->name);
+ goto out_err;
+ }
+
+ ccu->range = (u32)range;
+ ccu->base = ioremap(res.start, ccu->range);
+ if (!ccu->base) {
+ pr_err("%s: unable to map CCU registers for %s\n", __func__,
+ node->name);
+ goto out_err;
+ }
+
+ spin_lock_init(&ccu->lock);
+ INIT_LIST_HEAD(&ccu->links);
+ ccu->node = of_node_get(node);
+
+ list_add_tail(&ccu->links, &ccu_list);
+
+ /* Set up clocks array (in ccu->data) */
+ if (ccu_clks_setup(ccu))
+ goto out_err;
+
+ ret = of_clk_add_provider(node, of_clk_src_onecell_get, &ccu->data);
+ if (ret) {
+ pr_err("%s: error adding ccu %s as provider (%d)\n", __func__,
+ node->name, ret);
+ goto out_err;
+ }
+
+ if (!kona_ccu_init(ccu))
+ pr_err("Broadcom %s initialization had errors\n", node->name);
+
+ return;
+out_err:
+ kona_ccu_teardown(ccu);
+ pr_err("Broadcom %s setup aborted\n", node->name);
+}
diff --git a/drivers/clk/bcm/clk-kona.c b/drivers/clk/bcm/clk-kona.c
new file mode 100644
index 000000000000..e3d339e08309
--- /dev/null
+++ b/drivers/clk/bcm/clk-kona.c
@@ -0,0 +1,1033 @@
+/*
+ * Copyright (C) 2013 Broadcom Corporation
+ * Copyright 2013 Linaro Limited
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "clk-kona.h"
+
+#include <linux/delay.h>
+
+#define CCU_ACCESS_PASSWORD 0xA5A500
+#define CLK_GATE_DELAY_LOOP 2000
+
+/* Bitfield operations */
+
+/* Produces a mask of set bits covering a range of a 32-bit value */
+static inline u32 bitfield_mask(u32 shift, u32 width)
+{
+ return ((1 << width) - 1) << shift;
+}
+
+/* Extract the value of a bitfield found within a given register value */
+static inline u32 bitfield_extract(u32 reg_val, u32 shift, u32 width)
+{
+ return (reg_val & bitfield_mask(shift, width)) >> shift;
+}
+
+/* Replace the value of a bitfield found within a given register value */
+static inline u32 bitfield_replace(u32 reg_val, u32 shift, u32 width, u32 val)
+{
+ u32 mask = bitfield_mask(shift, width);
+
+ return (reg_val & ~mask) | (val << shift);
+}
+
+/* Divider and scaling helpers */
+
+/*
+ * Implement DIV_ROUND_CLOSEST() for 64-bit dividend and both values
+ * unsigned. Note that unlike do_div(), the remainder is discarded
+ * and the return value is the quotient (not the remainder).
+ */
+u64 do_div_round_closest(u64 dividend, unsigned long divisor)
+{
+ u64 result;
+
+ result = dividend + ((u64)divisor >> 1);
+ (void)do_div(result, divisor);
+
+ return result;
+}
+
+/* Convert a divider into the scaled divisor value it represents. */
+static inline u64 scaled_div_value(struct bcm_clk_div *div, u32 reg_div)
+{
+ return (u64)reg_div + ((u64)1 << div->frac_width);
+}
+
+/*
+ * Build a scaled divider value as close as possible to the
+ * given whole part (div_value) and fractional part (expressed
+ * in billionths).
+ */
+u64 scaled_div_build(struct bcm_clk_div *div, u32 div_value, u32 billionths)
+{
+ u64 combined;
+
+ BUG_ON(!div_value);
+ BUG_ON(billionths >= BILLION);
+
+ combined = (u64)div_value * BILLION + billionths;
+ combined <<= div->frac_width;
+
+ return do_div_round_closest(combined, BILLION);
+}
+
+/* The scaled minimum divisor representable by a divider */
+static inline u64
+scaled_div_min(struct bcm_clk_div *div)
+{
+ if (divider_is_fixed(div))
+ return (u64)div->fixed;
+
+ return scaled_div_value(div, 0);
+}
+
+/* The scaled maximum divisor representable by a divider */
+u64 scaled_div_max(struct bcm_clk_div *div)
+{
+ u32 reg_div;
+
+ if (divider_is_fixed(div))
+ return (u64)div->fixed;
+
+ reg_div = ((u32)1 << div->width) - 1;
+
+ return scaled_div_value(div, reg_div);
+}
+
+/*
+ * Convert a scaled divisor into its divider representation as
+ * stored in a divider register field.
+ */
+static inline u32
+divider(struct bcm_clk_div *div, u64 scaled_div)
+{
+ BUG_ON(scaled_div < scaled_div_min(div));
+ BUG_ON(scaled_div > scaled_div_max(div));
+
+ return (u32)(scaled_div - ((u64)1 << div->frac_width));
+}
+
+/* Return a rate scaled for use when dividing by a scaled divisor. */
+static inline u64
+scale_rate(struct bcm_clk_div *div, u32 rate)
+{
+ if (divider_is_fixed(div))
+ return (u64)rate;
+
+ return (u64)rate << div->frac_width;
+}
+
+/* CCU access */
+
+/* Read a 32-bit register value from a CCU's address space. */
+static inline u32 __ccu_read(struct ccu_data *ccu, u32 reg_offset)
+{
+ return readl(ccu->base + reg_offset);
+}
+
+/* Write a 32-bit register value into a CCU's address space. */
+static inline void
+__ccu_write(struct ccu_data *ccu, u32 reg_offset, u32 reg_val)
+{
+ writel(reg_val, ccu->base + reg_offset);
+}
+
+static inline unsigned long ccu_lock(struct ccu_data *ccu)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ccu->lock, flags);
+
+ return flags;
+}
+static inline void ccu_unlock(struct ccu_data *ccu, unsigned long flags)
+{
+ spin_unlock_irqrestore(&ccu->lock, flags);
+}
+
+/*
+ * Enable/disable write access to CCU protected registers. The
+ * WR_ACCESS register for all CCUs is at offset 0.
+ */
+static inline void __ccu_write_enable(struct ccu_data *ccu)
+{
+ if (ccu->write_enabled) {
+ pr_err("%s: access already enabled for %s\n", __func__,
+ ccu->name);
+ return;
+ }
+ ccu->write_enabled = true;
+ __ccu_write(ccu, 0, CCU_ACCESS_PASSWORD | 1);
+}
+
+static inline void __ccu_write_disable(struct ccu_data *ccu)
+{
+ if (!ccu->write_enabled) {
+ pr_err("%s: access wasn't enabled for %s\n", __func__,
+ ccu->name);
+ return;
+ }
+
+ __ccu_write(ccu, 0, CCU_ACCESS_PASSWORD);
+ ccu->write_enabled = false;
+}
+
+/*
+ * Poll a register in a CCU's address space, returning when the
+ * specified bit in that register's value is set (or clear). Delay
+ * a microsecond after each read of the register. Returns true if
+ * successful, or false if we gave up trying.
+ *
+ * Caller must ensure the CCU lock is held.
+ */
+static inline bool
+__ccu_wait_bit(struct ccu_data *ccu, u32 reg_offset, u32 bit, bool want)
+{
+ unsigned int tries;
+ u32 bit_mask = 1 << bit;
+
+ for (tries = 0; tries < CLK_GATE_DELAY_LOOP; tries++) {
+ u32 val;
+ bool bit_val;
+
+ val = __ccu_read(ccu, reg_offset);
+ bit_val = (val & bit_mask) != 0;
+ if (bit_val == want)
+ return true;
+ udelay(1);
+ }
+ return false;
+}
+
+/* Gate operations */
+
+/* Determine whether a clock is gated. CCU lock must be held. */
+static bool
+__is_clk_gate_enabled(struct ccu_data *ccu, struct bcm_clk_gate *gate)
+{
+ u32 bit_mask;
+ u32 reg_val;
+
+ /* If there is no gate we can assume it's enabled. */
+ if (!gate_exists(gate))
+ return true;
+
+ bit_mask = 1 << gate->status_bit;
+ reg_val = __ccu_read(ccu, gate->offset);
+
+ return (reg_val & bit_mask) != 0;
+}
+
+/* Determine whether a clock is gated. */
+static bool
+is_clk_gate_enabled(struct ccu_data *ccu, struct bcm_clk_gate *gate)
+{
+ long flags;
+ bool ret;
+
+ /* Avoid taking the lock if we can */
+ if (!gate_exists(gate))
+ return true;
+
+ flags = ccu_lock(ccu);
+ ret = __is_clk_gate_enabled(ccu, gate);
+ ccu_unlock(ccu, flags);
+
+ return ret;
+}
+
+/*
+ * Commit our desired gate state to the hardware.
+ * Returns true if successful, false otherwise.
+ */
+static bool
+__gate_commit(struct ccu_data *ccu, struct bcm_clk_gate *gate)
+{
+ u32 reg_val;
+ u32 mask;
+ bool enabled = false;
+
+ BUG_ON(!gate_exists(gate));
+ if (!gate_is_sw_controllable(gate))
+ return true; /* Nothing we can change */
+
+ reg_val = __ccu_read(ccu, gate->offset);
+
+ /* For a hardware/software gate, set which is in control */
+ if (gate_is_hw_controllable(gate)) {
+ mask = (u32)1 << gate->hw_sw_sel_bit;
+ if (gate_is_sw_managed(gate))
+ reg_val |= mask;
+ else
+ reg_val &= ~mask;
+ }
+
+ /*
+ * If software is in control, enable or disable the gate.
+ * If hardware is, clear the enabled bit for good measure.
+ * If a software controlled gate can't be disabled, we're
+ * required to write a 0 into the enable bit (but the gate
+ * will be enabled).
+ */
+ mask = (u32)1 << gate->en_bit;
+ if (gate_is_sw_managed(gate) && (enabled = gate_is_enabled(gate)) &&
+ !gate_is_no_disable(gate))
+ reg_val |= mask;
+ else
+ reg_val &= ~mask;
+
+ __ccu_write(ccu, gate->offset, reg_val);
+
+ /* For a hardware controlled gate, we're done */
+ if (!gate_is_sw_managed(gate))
+ return true;
+
+ /* Otherwise wait for the gate to be in desired state */
+ return __ccu_wait_bit(ccu, gate->offset, gate->status_bit, enabled);
+}
+
+/*
+ * Initialize a gate. Our desired state (hardware/software select,
+ * and if software, its enable state) is committed to hardware
+ * without the usual checks to see if it's already set up that way.
+ * Returns true if successful, false otherwise.
+ */
+static bool gate_init(struct ccu_data *ccu, struct bcm_clk_gate *gate)
+{
+ if (!gate_exists(gate))
+ return true;
+ return __gate_commit(ccu, gate);
+}
+
+/*
+ * Set a gate to enabled or disabled state. Does nothing if the
+ * gate is not currently under software control, or if it is already
+ * in the requested state. Returns true if successful, false
+ * otherwise. CCU lock must be held.
+ */
+static bool
+__clk_gate(struct ccu_data *ccu, struct bcm_clk_gate *gate, bool enable)
+{
+ bool ret;
+
+ if (!gate_exists(gate) || !gate_is_sw_managed(gate))
+ return true; /* Nothing to do */
+
+ if (!enable && gate_is_no_disable(gate)) {
+ pr_warn("%s: invalid gate disable request (ignoring)\n",
+ __func__);
+ return true;
+ }
+
+ if (enable == gate_is_enabled(gate))
+ return true; /* No change */
+
+ gate_flip_enabled(gate);
+ ret = __gate_commit(ccu, gate);
+ if (!ret)
+ gate_flip_enabled(gate); /* Revert the change */
+
+ return ret;
+}
+
+/* Enable or disable a gate. Returns 0 if successful, -EIO otherwise */
+static int clk_gate(struct ccu_data *ccu, const char *name,
+ struct bcm_clk_gate *gate, bool enable)
+{
+ unsigned long flags;
+ bool success;
+
+ /*
+ * Avoid taking the lock if we can. We quietly ignore
+ * requests to change state that don't make sense.
+ */
+ if (!gate_exists(gate) || !gate_is_sw_managed(gate))
+ return 0;
+ if (!enable && gate_is_no_disable(gate))
+ return 0;
+
+ flags = ccu_lock(ccu);
+ __ccu_write_enable(ccu);
+
+ success = __clk_gate(ccu, gate, enable);
+
+ __ccu_write_disable(ccu);
+ ccu_unlock(ccu, flags);
+
+ if (success)
+ return 0;
+
+ pr_err("%s: failed to %s gate for %s\n", __func__,
+ enable ? "enable" : "disable", name);
+
+ return -EIO;
+}
+
+/* Trigger operations */
+
+/*
+ * Caller must ensure CCU lock is held and access is enabled.
+ * Returns true if successful, false otherwise.
+ */
+static bool __clk_trigger(struct ccu_data *ccu, struct bcm_clk_trig *trig)
+{
+ /* Trigger the clock and wait for it to finish */
+ __ccu_write(ccu, trig->offset, 1 << trig->bit);
+
+ return __ccu_wait_bit(ccu, trig->offset, trig->bit, false);
+}
+
+/* Divider operations */
+
+/* Read a divider value and return the scaled divisor it represents. */
+static u64 divider_read_scaled(struct ccu_data *ccu, struct bcm_clk_div *div)
+{
+ unsigned long flags;
+ u32 reg_val;
+ u32 reg_div;
+
+ if (divider_is_fixed(div))
+ return (u64)div->fixed;
+
+ flags = ccu_lock(ccu);
+ reg_val = __ccu_read(ccu, div->offset);
+ ccu_unlock(ccu, flags);
+
+ /* Extract the full divider field from the register value */
+ reg_div = bitfield_extract(reg_val, div->shift, div->width);
+
+ /* Return the scaled divisor value it represents */
+ return scaled_div_value(div, reg_div);
+}
+
+/*
+ * Convert a divider's scaled divisor value into its recorded form
+ * and commit it into the hardware divider register.
+ *
+ * Returns 0 on success. Returns -EINVAL for invalid arguments.
+ * Returns -ENXIO if gating failed, and -EIO if a trigger failed.
+ */
+static int __div_commit(struct ccu_data *ccu, struct bcm_clk_gate *gate,
+ struct bcm_clk_div *div, struct bcm_clk_trig *trig)
+{
+ bool enabled;
+ u32 reg_div;
+ u32 reg_val;
+ int ret = 0;
+
+ BUG_ON(divider_is_fixed(div));
+
+ /*
+ * If we're just initializing the divider, and no initial
+ * state was defined in the device tree, we just find out
+ * what its current value is rather than updating it.
+ */
+ if (div->scaled_div == BAD_SCALED_DIV_VALUE) {
+ reg_val = __ccu_read(ccu, div->offset);
+ reg_div = bitfield_extract(reg_val, div->shift, div->width);
+ div->scaled_div = scaled_div_value(div, reg_div);
+
+ return 0;
+ }
+
+ /* Convert the scaled divisor to the value we need to record */
+ reg_div = divider(div, div->scaled_div);
+
+ /* Clock needs to be enabled before changing the rate */
+ enabled = __is_clk_gate_enabled(ccu, gate);
+ if (!enabled && !__clk_gate(ccu, gate, true)) {
+ ret = -ENXIO;
+ goto out;
+ }
+
+ /* Replace the divider value and record the result */
+ reg_val = __ccu_read(ccu, div->offset);
+ reg_val = bitfield_replace(reg_val, div->shift, div->width, reg_div);
+ __ccu_write(ccu, div->offset, reg_val);
+
+ /* If the trigger fails we still want to disable the gate */
+ if (!__clk_trigger(ccu, trig))
+ ret = -EIO;
+
+ /* Disable the clock again if it was disabled to begin with */
+ if (!enabled && !__clk_gate(ccu, gate, false))
+ ret = ret ? ret : -ENXIO; /* return first error */
+out:
+ return ret;
+}
+
+/*
+ * Initialize a divider by committing our desired state to hardware
+ * without the usual checks to see if it's already set up that way.
+ * Returns true if successful, false otherwise.
+ */
+static bool div_init(struct ccu_data *ccu, struct bcm_clk_gate *gate,
+ struct bcm_clk_div *div, struct bcm_clk_trig *trig)
+{
+ if (!divider_exists(div) || divider_is_fixed(div))
+ return true;
+ return !__div_commit(ccu, gate, div, trig);
+}
+
+static int divider_write(struct ccu_data *ccu, struct bcm_clk_gate *gate,
+ struct bcm_clk_div *div, struct bcm_clk_trig *trig,
+ u64 scaled_div)
+{
+ unsigned long flags;
+ u64 previous;
+ int ret;
+
+ BUG_ON(divider_is_fixed(div));
+
+ previous = div->scaled_div;
+ if (previous == scaled_div)
+ return 0; /* No change */
+
+ div->scaled_div = scaled_div;
+
+ flags = ccu_lock(ccu);
+ __ccu_write_enable(ccu);
+
+ ret = __div_commit(ccu, gate, div, trig);
+
+ __ccu_write_disable(ccu);
+ ccu_unlock(ccu, flags);
+
+ if (ret)
+ div->scaled_div = previous; /* Revert the change */
+
+ return ret;
+
+}
+
+/* Common clock rate helpers */
+
+/*
+ * Implement the common clock framework recalc_rate method, taking
+ * into account a divider and an optional pre-divider. The
+ * pre-divider register pointer may be NULL.
+ */
+static unsigned long clk_recalc_rate(struct ccu_data *ccu,
+ struct bcm_clk_div *div, struct bcm_clk_div *pre_div,
+ unsigned long parent_rate)
+{
+ u64 scaled_parent_rate;
+ u64 scaled_div;
+ u64 result;
+
+ if (!divider_exists(div))
+ return parent_rate;
+
+ if (parent_rate > (unsigned long)LONG_MAX)
+ return 0; /* actually this would be a caller bug */
+
+ /*
+ * If there is a pre-divider, divide the scaled parent rate
+ * by the pre-divider value first. In this case--to improve
+ * accuracy--scale the parent rate by *both* the pre-divider
+ * value and the divider before actually computing the
+ * result of the pre-divider.
+ *
+ * If there's only one divider, just scale the parent rate.
+ */
+ if (pre_div && divider_exists(pre_div)) {
+ u64 scaled_rate;
+
+ scaled_rate = scale_rate(pre_div, parent_rate);
+ scaled_rate = scale_rate(div, scaled_rate);
+ scaled_div = divider_read_scaled(ccu, pre_div);
+ scaled_parent_rate = do_div_round_closest(scaled_rate,
+ scaled_div);
+ } else {
+ scaled_parent_rate = scale_rate(div, parent_rate);
+ }
+
+ /*
+ * Get the scaled divisor value, and divide the scaled
+ * parent rate by that to determine this clock's resulting
+ * rate.
+ */
+ scaled_div = divider_read_scaled(ccu, div);
+ result = do_div_round_closest(scaled_parent_rate, scaled_div);
+
+ return (unsigned long)result;
+}
+
+/*
+ * Compute the output rate produced when a given parent rate is fed
+ * into two dividers. The pre-divider can be NULL, and even if it's
+ * non-null it may be nonexistent. It's also OK for the divider to
+ * be nonexistent, and in that case the pre-divider is also ignored.
+ *
+ * If scaled_div is non-null, it is used to return the scaled divisor
+ * value used by the (downstream) divider to produce that rate.
+ */
+static long round_rate(struct ccu_data *ccu, struct bcm_clk_div *div,
+ struct bcm_clk_div *pre_div,
+ unsigned long rate, unsigned long parent_rate,
+ u64 *scaled_div)
+{
+ u64 scaled_parent_rate;
+ u64 min_scaled_div;
+ u64 max_scaled_div;
+ u64 best_scaled_div;
+ u64 result;
+
+ BUG_ON(!divider_exists(div));
+ BUG_ON(!rate);
+ BUG_ON(parent_rate > (u64)LONG_MAX);
+
+ /*
+ * If there is a pre-divider, divide the scaled parent rate
+ * by the pre-divider value first. In this case--to improve
+ * accuracy--scale the parent rate by *both* the pre-divider
+ * value and the divider before actually computing the
+ * result of the pre-divider.
+ *
+ * If there's only one divider, just scale the parent rate.
+ *
+ * For simplicity we treat the pre-divider as fixed (for now).
+ */
+ if (divider_exists(pre_div)) {
+ u64 scaled_rate;
+ u64 scaled_pre_div;
+
+ scaled_rate = scale_rate(pre_div, parent_rate);
+ scaled_rate = scale_rate(div, scaled_rate);
+ scaled_pre_div = divider_read_scaled(ccu, pre_div);
+ scaled_parent_rate = do_div_round_closest(scaled_rate,
+ scaled_pre_div);
+ } else {
+ scaled_parent_rate = scale_rate(div, parent_rate);
+ }
+
+ /*
+ * Compute the best possible divider and ensure it is in
+ * range. A fixed divider can't be changed, so just report
+ * the best we can do.
+ */
+ if (!divider_is_fixed(div)) {
+ best_scaled_div = do_div_round_closest(scaled_parent_rate,
+ rate);
+ min_scaled_div = scaled_div_min(div);
+ max_scaled_div = scaled_div_max(div);
+ if (best_scaled_div > max_scaled_div)
+ best_scaled_div = max_scaled_div;
+ else if (best_scaled_div < min_scaled_div)
+ best_scaled_div = min_scaled_div;
+ } else {
+ best_scaled_div = divider_read_scaled(ccu, div);
+ }
+
+ /* OK, figure out the resulting rate */
+ result = do_div_round_closest(scaled_parent_rate, best_scaled_div);
+
+ if (scaled_div)
+ *scaled_div = best_scaled_div;
+
+ return (long)result;
+}
+
+/* Common clock parent helpers */
+
+/*
+ * For a given parent selector (register field) value, find the
+ * index into a selector's parent_sel array that contains it.
+ * Returns the index, or BAD_CLK_INDEX if it's not found.
+ */
+static u8 parent_index(struct bcm_clk_sel *sel, u8 parent_sel)
+{
+ u8 i;
+
+ BUG_ON(sel->parent_count > (u32)U8_MAX);
+ for (i = 0; i < sel->parent_count; i++)
+ if (sel->parent_sel[i] == parent_sel)
+ return i;
+ return BAD_CLK_INDEX;
+}
+
+/*
+ * Fetch the current value of the selector, and translate that into
+ * its corresponding index in the parent array we registered with
+ * the clock framework.
+ *
+ * Returns parent array index that corresponds with the value found,
+ * or BAD_CLK_INDEX if the found value is out of range.
+ */
+static u8 selector_read_index(struct ccu_data *ccu, struct bcm_clk_sel *sel)
+{
+ unsigned long flags;
+ u32 reg_val;
+ u32 parent_sel;
+ u8 index;
+
+ /* If there's no selector, there's only one parent */
+ if (!selector_exists(sel))
+ return 0;
+
+ /* Get the value in the selector register */
+ flags = ccu_lock(ccu);
+ reg_val = __ccu_read(ccu, sel->offset);
+ ccu_unlock(ccu, flags);
+
+ parent_sel = bitfield_extract(reg_val, sel->shift, sel->width);
+
+ /* Look up that selector's parent array index and return it */
+ index = parent_index(sel, parent_sel);
+ if (index == BAD_CLK_INDEX)
+ pr_err("%s: out-of-range parent selector %u (%s 0x%04x)\n",
+ __func__, parent_sel, ccu->name, sel->offset);
+
+ return index;
+}
+
+/*
+ * Commit our desired selector value to the hardware.
+ *
+ * Returns 0 on success. Returns -EINVAL for invalid arguments.
+ * Returns -ENXIO if gating failed, and -EIO if a trigger failed.
+ */
+static int
+__sel_commit(struct ccu_data *ccu, struct bcm_clk_gate *gate,
+ struct bcm_clk_sel *sel, struct bcm_clk_trig *trig)
+{
+ u32 parent_sel;
+ u32 reg_val;
+ bool enabled;
+ int ret = 0;
+
+ BUG_ON(!selector_exists(sel));
+
+ /*
+ * If we're just initializing the selector, and no initial
+ * state was defined in the device tree, we just find out
+ * what its current value is rather than updating it.
+ */
+ if (sel->clk_index == BAD_CLK_INDEX) {
+ u8 index;
+
+ reg_val = __ccu_read(ccu, sel->offset);
+ parent_sel = bitfield_extract(reg_val, sel->shift, sel->width);
+ index = parent_index(sel, parent_sel);
+ if (index == BAD_CLK_INDEX)
+ return -EINVAL;
+ sel->clk_index = index;
+
+ return 0;
+ }
+
+ BUG_ON((u32)sel->clk_index >= sel->parent_count);
+ parent_sel = sel->parent_sel[sel->clk_index];
+
+ /* Clock needs to be enabled before changing the parent */
+ enabled = __is_clk_gate_enabled(ccu, gate);
+ if (!enabled && !__clk_gate(ccu, gate, true))
+ return -ENXIO;
+
+ /* Replace the selector value and record the result */
+ reg_val = __ccu_read(ccu, sel->offset);
+ reg_val = bitfield_replace(reg_val, sel->shift, sel->width, parent_sel);
+ __ccu_write(ccu, sel->offset, reg_val);
+
+ /* If the trigger fails we still want to disable the gate */
+ if (!__clk_trigger(ccu, trig))
+ ret = -EIO;
+
+ /* Disable the clock again if it was disabled to begin with */
+ if (!enabled && !__clk_gate(ccu, gate, false))
+ ret = ret ? ret : -ENXIO; /* return first error */
+
+ return ret;
+}
+
+/*
+ * Initialize a selector by committing our desired state to hardware
+ * without the usual checks to see if it's already set up that way.
+ * Returns true if successful, false otherwise.
+ */
+static bool sel_init(struct ccu_data *ccu, struct bcm_clk_gate *gate,
+ struct bcm_clk_sel *sel, struct bcm_clk_trig *trig)
+{
+ if (!selector_exists(sel))
+ return true;
+ return !__sel_commit(ccu, gate, sel, trig);
+}
+
+/*
+ * Write a new value into a selector register to switch to a
+ * different parent clock. Returns 0 on success, or an error code
+ * (from __sel_commit()) otherwise.
+ */
+static int selector_write(struct ccu_data *ccu, struct bcm_clk_gate *gate,
+ struct bcm_clk_sel *sel, struct bcm_clk_trig *trig,
+ u8 index)
+{
+ unsigned long flags;
+ u8 previous;
+ int ret;
+
+ previous = sel->clk_index;
+ if (previous == index)
+ return 0; /* No change */
+
+ sel->clk_index = index;
+
+ flags = ccu_lock(ccu);
+ __ccu_write_enable(ccu);
+
+ ret = __sel_commit(ccu, gate, sel, trig);
+
+ __ccu_write_disable(ccu);
+ ccu_unlock(ccu, flags);
+
+ if (ret)
+ sel->clk_index = previous; /* Revert the change */
+
+ return ret;
+}
+
+/* Clock operations */
+
+static int kona_peri_clk_enable(struct clk_hw *hw)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct bcm_clk_gate *gate = &bcm_clk->peri->gate;
+
+ return clk_gate(bcm_clk->ccu, bcm_clk->name, gate, true);
+}
+
+static void kona_peri_clk_disable(struct clk_hw *hw)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct bcm_clk_gate *gate = &bcm_clk->peri->gate;
+
+ (void)clk_gate(bcm_clk->ccu, bcm_clk->name, gate, false);
+}
+
+static int kona_peri_clk_is_enabled(struct clk_hw *hw)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct bcm_clk_gate *gate = &bcm_clk->peri->gate;
+
+ return is_clk_gate_enabled(bcm_clk->ccu, gate) ? 1 : 0;
+}
+
+static unsigned long kona_peri_clk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct peri_clk_data *data = bcm_clk->peri;
+
+ return clk_recalc_rate(bcm_clk->ccu, &data->div, &data->pre_div,
+ parent_rate);
+}
+
+static long kona_peri_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct bcm_clk_div *div = &bcm_clk->peri->div;
+
+ if (!divider_exists(div))
+ return __clk_get_rate(hw->clk);
+
+ /* Quietly avoid a zero rate */
+ return round_rate(bcm_clk->ccu, div, &bcm_clk->peri->pre_div,
+ rate ? rate : 1, *parent_rate, NULL);
+}
+
+static int kona_peri_clk_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct peri_clk_data *data = bcm_clk->peri;
+ struct bcm_clk_sel *sel = &data->sel;
+ struct bcm_clk_trig *trig;
+ int ret;
+
+ BUG_ON(index >= sel->parent_count);
+
+ /* If there's only one parent we don't require a selector */
+ if (!selector_exists(sel))
+ return 0;
+
+ /*
+ * The regular trigger is used by default, but if there's a
+ * pre-trigger we want to use that instead.
+ */
+ trig = trigger_exists(&data->pre_trig) ? &data->pre_trig
+ : &data->trig;
+
+ ret = selector_write(bcm_clk->ccu, &data->gate, sel, trig, index);
+ if (ret == -ENXIO) {
+ pr_err("%s: gating failure for %s\n", __func__, bcm_clk->name);
+ ret = -EIO; /* Don't proliferate weird errors */
+ } else if (ret == -EIO) {
+ pr_err("%s: %strigger failed for %s\n", __func__,
+ trig == &data->pre_trig ? "pre-" : "",
+ bcm_clk->name);
+ }
+
+ return ret;
+}
+
+static u8 kona_peri_clk_get_parent(struct clk_hw *hw)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct peri_clk_data *data = bcm_clk->peri;
+ u8 index;
+
+ index = selector_read_index(bcm_clk->ccu, &data->sel);
+
+ /* Not all callers would handle an out-of-range value gracefully */
+ return index == BAD_CLK_INDEX ? 0 : index;
+}
+
+static int kona_peri_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct kona_clk *bcm_clk = to_kona_clk(hw);
+ struct peri_clk_data *data = bcm_clk->peri;
+ struct bcm_clk_div *div = &data->div;
+ u64 scaled_div = 0;
+ int ret;
+
+ if (parent_rate > (unsigned long)LONG_MAX)
+ return -EINVAL;
+
+ if (rate == __clk_get_rate(hw->clk))
+ return 0;
+
+ if (!divider_exists(div))
+ return rate == parent_rate ? 0 : -EINVAL;
+
+ /*
+ * A fixed divider can't be changed. (Nor can a fixed
+ * pre-divider be, but for now we never actually try to
+ * change that.) Tolerate a request for a no-op change.
+ */
+ if (divider_is_fixed(&data->div))
+ return rate == parent_rate ? 0 : -EINVAL;
+
+ /*
+ * Get the scaled divisor value needed to achieve a clock
+ * rate as close as possible to what was requested, given
+ * the parent clock rate supplied.
+ */
+ (void)round_rate(bcm_clk->ccu, div, &data->pre_div,
+ rate ? rate : 1, parent_rate, &scaled_div);
+
+ /*
+ * We aren't updating any pre-divider at this point, so
+ * we'll use the regular trigger.
+ */
+ ret = divider_write(bcm_clk->ccu, &data->gate, &data->div,
+ &data->trig, scaled_div);
+ if (ret == -ENXIO) {
+ pr_err("%s: gating failure for %s\n", __func__, bcm_clk->name);
+ ret = -EIO; /* Don't proliferate weird errors */
+ } else if (ret == -EIO) {
+ pr_err("%s: trigger failed for %s\n", __func__, bcm_clk->name);
+ }
+
+ return ret;
+}
+
+struct clk_ops kona_peri_clk_ops = {
+ .enable = kona_peri_clk_enable,
+ .disable = kona_peri_clk_disable,
+ .is_enabled = kona_peri_clk_is_enabled,
+ .recalc_rate = kona_peri_clk_recalc_rate,
+ .round_rate = kona_peri_clk_round_rate,
+ .set_parent = kona_peri_clk_set_parent,
+ .get_parent = kona_peri_clk_get_parent,
+ .set_rate = kona_peri_clk_set_rate,
+};
+
+/* Put a peripheral clock into its initial state */
+static bool __peri_clk_init(struct kona_clk *bcm_clk)
+{
+ struct ccu_data *ccu = bcm_clk->ccu;
+ struct peri_clk_data *peri = bcm_clk->peri;
+ const char *name = bcm_clk->name;
+ struct bcm_clk_trig *trig;
+
+ BUG_ON(bcm_clk->type != bcm_clk_peri);
+
+ if (!gate_init(ccu, &peri->gate)) {
+ pr_err("%s: error initializing gate for %s\n", __func__, name);
+ return false;
+ }
+ if (!div_init(ccu, &peri->gate, &peri->div, &peri->trig)) {
+ pr_err("%s: error initializing divider for %s\n", __func__,
+ name);
+ return false;
+ }
+
+ /*
+ * For the pre-divider and selector, the pre-trigger is used
+ * if it's present, otherwise we just use the regular trigger.
+ */
+ trig = trigger_exists(&peri->pre_trig) ? &peri->pre_trig
+ : &peri->trig;
+
+ if (!div_init(ccu, &peri->gate, &peri->pre_div, trig)) {
+ pr_err("%s: error initializing pre-divider for %s\n", __func__,
+ name);
+ return false;
+ }
+
+ if (!sel_init(ccu, &peri->gate, &peri->sel, trig)) {
+ pr_err("%s: error initializing selector for %s\n", __func__,
+ name);
+ return false;
+ }
+
+ return true;
+}
+
+static bool __kona_clk_init(struct kona_clk *bcm_clk)
+{
+ switch (bcm_clk->type) {
+ case bcm_clk_peri:
+ return __peri_clk_init(bcm_clk);
+ default:
+ BUG();
+ }
+ return -EINVAL;
+}
+
+/* Set a CCU and all its clocks into their desired initial state */
+bool __init kona_ccu_init(struct ccu_data *ccu)
+{
+ unsigned long flags;
+ unsigned int which;
+ struct clk **clks = ccu->data.clks;
+ bool success = true;
+
+ flags = ccu_lock(ccu);
+ __ccu_write_enable(ccu);
+
+ for (which = 0; which < ccu->data.clk_num; which++) {
+ struct kona_clk *bcm_clk;
+
+ if (!clks[which])
+ continue;
+ bcm_clk = to_kona_clk(__clk_get_hw(clks[which]));
+ success &= __kona_clk_init(bcm_clk);
+ }
+
+ __ccu_write_disable(ccu);
+ ccu_unlock(ccu, flags);
+ return success;
+}
diff --git a/drivers/clk/bcm/clk-kona.h b/drivers/clk/bcm/clk-kona.h
new file mode 100644
index 000000000000..5e139adc3dc5
--- /dev/null
+++ b/drivers/clk/bcm/clk-kona.h
@@ -0,0 +1,410 @@
+/*
+ * Copyright (C) 2013 Broadcom Corporation
+ * Copyright 2013 Linaro Limited
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _CLK_KONA_H
+#define _CLK_KONA_H
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/clk-provider.h>
+
+#define BILLION 1000000000
+
+/* The common clock framework uses u8 to represent a parent index */
+#define PARENT_COUNT_MAX ((u32)U8_MAX)
+
+#define BAD_CLK_INDEX U8_MAX /* Can't ever be valid */
+#define BAD_CLK_NAME ((const char *)-1)
+
+#define BAD_SCALED_DIV_VALUE U64_MAX
+
+/*
+ * Utility macros for object flag management. If possible, flags
+ * should be defined such that 0 is the desired default value.
+ */
+#define FLAG(type, flag) BCM_CLK_ ## type ## _FLAGS_ ## flag
+#define FLAG_SET(obj, type, flag) ((obj)->flags |= FLAG(type, flag))
+#define FLAG_CLEAR(obj, type, flag) ((obj)->flags &= ~(FLAG(type, flag)))
+#define FLAG_FLIP(obj, type, flag) ((obj)->flags ^= FLAG(type, flag))
+#define FLAG_TEST(obj, type, flag) (!!((obj)->flags & FLAG(type, flag)))
+
+/* Clock field state tests */
+
+#define gate_exists(gate) FLAG_TEST(gate, GATE, EXISTS)
+#define gate_is_enabled(gate) FLAG_TEST(gate, GATE, ENABLED)
+#define gate_is_hw_controllable(gate) FLAG_TEST(gate, GATE, HW)
+#define gate_is_sw_controllable(gate) FLAG_TEST(gate, GATE, SW)
+#define gate_is_sw_managed(gate) FLAG_TEST(gate, GATE, SW_MANAGED)
+#define gate_is_no_disable(gate) FLAG_TEST(gate, GATE, NO_DISABLE)
+
+#define gate_flip_enabled(gate) FLAG_FLIP(gate, GATE, ENABLED)
+
+#define divider_exists(div) FLAG_TEST(div, DIV, EXISTS)
+#define divider_is_fixed(div) FLAG_TEST(div, DIV, FIXED)
+#define divider_has_fraction(div) (!divider_is_fixed(div) && \
+ (div)->frac_width > 0)
+
+#define selector_exists(sel) ((sel)->width != 0)
+#define trigger_exists(trig) FLAG_TEST(trig, TRIG, EXISTS)
+
+/* Clock type, used to tell common block what it's part of */
+enum bcm_clk_type {
+ bcm_clk_none, /* undefined clock type */
+ bcm_clk_bus,
+ bcm_clk_core,
+ bcm_clk_peri
+};
+
+/*
+ * Each CCU defines a mapped area of memory containing registers
+ * used to manage clocks implemented by the CCU. Access to memory
+ * within the CCU's space is serialized by a spinlock. Before any
+ * (other) address can be written, a special access "password" value
+ * must be written to its WR_ACCESS register (located at the base
+ * address of the range). We keep track of the name of each CCU as
+ * it is set up, and maintain them in a list.
+ */
+struct ccu_data {
+ void __iomem *base; /* base of mapped address space */
+ spinlock_t lock; /* serialization lock */
+ bool write_enabled; /* write access is currently enabled */
+ struct list_head links; /* for ccu_list */
+ struct device_node *node;
+ struct clk_onecell_data data;
+ const char *name;
+ u32 range; /* byte range of address space */
+};
+
+/*
+ * Gating control and status is managed by a 32-bit gate register.
+ *
+ * There are several types of gating available:
+ * - (no gate)
+ * A clock with no gate is assumed to be always enabled.
+ * - hardware-only gating (auto-gating)
+ * Enabling or disabling clocks with this type of gate is
+ * managed automatically by the hardware. Such clocks can be
+ * considered by the software to be enabled. The current status
+ * of auto-gated clocks can be read from the gate status bit.
+ * - software-only gating
+ * Auto-gating is not available for this type of clock.
+ * Instead, software manages whether it's enabled by setting or
+ * clearing the enable bit. The current gate status of a gate
+ * under software control can be read from the gate status bit.
+ * To ensure a change to the gating status is complete, the
+ * status bit can be polled to verify that the gate has entered
+ * the desired state.
+ * - selectable hardware or software gating
+ * Gating for this type of clock can be configured to be either
+ * under software or hardware control. Which type is in use is
+ * determined by the hw_sw_sel bit of the gate register.
+ */
+struct bcm_clk_gate {
+ u32 offset; /* gate register offset */
+ u32 status_bit; /* 0: gate is disabled; 0: gatge is enabled */
+ u32 en_bit; /* 0: disable; 1: enable */
+ u32 hw_sw_sel_bit; /* 0: hardware gating; 1: software gating */
+ u32 flags; /* BCM_CLK_GATE_FLAGS_* below */
+};
+
+/*
+ * Gate flags:
+ * HW means this gate can be auto-gated
+ * SW means the state of this gate can be software controlled
+ * NO_DISABLE means this gate is (only) enabled if under software control
+ * SW_MANAGED means the status of this gate is under software control
+ * ENABLED means this software-managed gate is *supposed* to be enabled
+ */
+#define BCM_CLK_GATE_FLAGS_EXISTS ((u32)1 << 0) /* Gate is valid */
+#define BCM_CLK_GATE_FLAGS_HW ((u32)1 << 1) /* Can auto-gate */
+#define BCM_CLK_GATE_FLAGS_SW ((u32)1 << 2) /* Software control */
+#define BCM_CLK_GATE_FLAGS_NO_DISABLE ((u32)1 << 3) /* HW or enabled */
+#define BCM_CLK_GATE_FLAGS_SW_MANAGED ((u32)1 << 4) /* SW now in control */
+#define BCM_CLK_GATE_FLAGS_ENABLED ((u32)1 << 5) /* If SW_MANAGED */
+
+/*
+ * Gate initialization macros.
+ *
+ * Any gate initially under software control will be enabled.
+ */
+
+/* A hardware/software gate initially under software control */
+#define HW_SW_GATE(_offset, _status_bit, _en_bit, _hw_sw_sel_bit) \
+ { \
+ .offset = (_offset), \
+ .status_bit = (_status_bit), \
+ .en_bit = (_en_bit), \
+ .hw_sw_sel_bit = (_hw_sw_sel_bit), \
+ .flags = FLAG(GATE, HW)|FLAG(GATE, SW)| \
+ FLAG(GATE, SW_MANAGED)|FLAG(GATE, ENABLED)| \
+ FLAG(GATE, EXISTS), \
+ }
+
+/* A hardware/software gate initially under hardware control */
+#define HW_SW_GATE_AUTO(_offset, _status_bit, _en_bit, _hw_sw_sel_bit) \
+ { \
+ .offset = (_offset), \
+ .status_bit = (_status_bit), \
+ .en_bit = (_en_bit), \
+ .hw_sw_sel_bit = (_hw_sw_sel_bit), \
+ .flags = FLAG(GATE, HW)|FLAG(GATE, SW)| \
+ FLAG(GATE, EXISTS), \
+ }
+
+/* A hardware-or-enabled gate (enabled if not under hardware control) */
+#define HW_ENABLE_GATE(_offset, _status_bit, _en_bit, _hw_sw_sel_bit) \
+ { \
+ .offset = (_offset), \
+ .status_bit = (_status_bit), \
+ .en_bit = (_en_bit), \
+ .hw_sw_sel_bit = (_hw_sw_sel_bit), \
+ .flags = FLAG(GATE, HW)|FLAG(GATE, SW)| \
+ FLAG(GATE, NO_DISABLE)|FLAG(GATE, EXISTS), \
+ }
+
+/* A software-only gate */
+#define SW_ONLY_GATE(_offset, _status_bit, _en_bit) \
+ { \
+ .offset = (_offset), \
+ .status_bit = (_status_bit), \
+ .en_bit = (_en_bit), \
+ .flags = FLAG(GATE, SW)|FLAG(GATE, SW_MANAGED)| \
+ FLAG(GATE, ENABLED)|FLAG(GATE, EXISTS), \
+ }
+
+/* A hardware-only gate */
+#define HW_ONLY_GATE(_offset, _status_bit) \
+ { \
+ .offset = (_offset), \
+ .status_bit = (_status_bit), \
+ .flags = FLAG(GATE, HW)|FLAG(GATE, EXISTS), \
+ }
+
+/*
+ * Each clock can have zero, one, or two dividers which change the
+ * output rate of the clock. Each divider can be either fixed or
+ * variable. If there are two dividers, they are the "pre-divider"
+ * and the "regular" or "downstream" divider. If there is only one,
+ * there is no pre-divider.
+ *
+ * A fixed divider is any non-zero (positive) value, and it
+ * indicates how the input rate is affected by the divider.
+ *
+ * The value of a variable divider is maintained in a sub-field of a
+ * 32-bit divider register. The position of the field in the
+ * register is defined by its offset and width. The value recorded
+ * in this field is always 1 less than the value it represents.
+ *
+ * In addition, a variable divider can indicate that some subset
+ * of its bits represent a "fractional" part of the divider. Such
+ * bits comprise the low-order portion of the divider field, and can
+ * be viewed as representing the portion of the divider that lies to
+ * the right of the decimal point. Most variable dividers have zero
+ * fractional bits. Variable dividers with non-zero fraction width
+ * still record a value 1 less than the value they represent; the
+ * added 1 does *not* affect the low-order bit in this case, it
+ * affects the bits above the fractional part only. (Often in this
+ * code a divider field value is distinguished from the value it
+ * represents by referring to the latter as a "divisor".)
+ *
+ * In order to avoid dealing with fractions, divider arithmetic is
+ * performed using "scaled" values. A scaled value is one that's
+ * been left-shifted by the fractional width of a divider. Dividing
+ * a scaled value by a scaled divisor produces the desired quotient
+ * without loss of precision and without any other special handling
+ * for fractions.
+ *
+ * The recorded value of a variable divider can be modified. To
+ * modify either divider (or both), a clock must be enabled (i.e.,
+ * using its gate). In addition, a trigger register (described
+ * below) must be used to commit the change, and polled to verify
+ * the change is complete.
+ */
+struct bcm_clk_div {
+ union {
+ struct { /* variable divider */
+ u32 offset; /* divider register offset */
+ u32 shift; /* field shift */
+ u32 width; /* field width */
+ u32 frac_width; /* field fraction width */
+
+ u64 scaled_div; /* scaled divider value */
+ };
+ u32 fixed; /* non-zero fixed divider value */
+ };
+ u32 flags; /* BCM_CLK_DIV_FLAGS_* below */
+};
+
+/*
+ * Divider flags:
+ * EXISTS means this divider exists
+ * FIXED means it is a fixed-rate divider
+ */
+#define BCM_CLK_DIV_FLAGS_EXISTS ((u32)1 << 0) /* Divider is valid */
+#define BCM_CLK_DIV_FLAGS_FIXED ((u32)1 << 1) /* Fixed-value */
+
+/* Divider initialization macros */
+
+/* A fixed (non-zero) divider */
+#define FIXED_DIVIDER(_value) \
+ { \
+ .fixed = (_value), \
+ .flags = FLAG(DIV, EXISTS)|FLAG(DIV, FIXED), \
+ }
+
+/* A divider with an integral divisor */
+#define DIVIDER(_offset, _shift, _width) \
+ { \
+ .offset = (_offset), \
+ .shift = (_shift), \
+ .width = (_width), \
+ .scaled_div = BAD_SCALED_DIV_VALUE, \
+ .flags = FLAG(DIV, EXISTS), \
+ }
+
+/* A divider whose divisor has an integer and fractional part */
+#define FRAC_DIVIDER(_offset, _shift, _width, _frac_width) \
+ { \
+ .offset = (_offset), \
+ .shift = (_shift), \
+ .width = (_width), \
+ .frac_width = (_frac_width), \
+ .scaled_div = BAD_SCALED_DIV_VALUE, \
+ .flags = FLAG(DIV, EXISTS), \
+ }
+
+/*
+ * Clocks may have multiple "parent" clocks. If there is more than
+ * one, a selector must be specified to define which of the parent
+ * clocks is currently in use. The selected clock is indicated in a
+ * sub-field of a 32-bit selector register. The range of
+ * representable selector values typically exceeds the number of
+ * available parent clocks. Occasionally the reset value of a
+ * selector field is explicitly set to a (specific) value that does
+ * not correspond to a defined input clock.
+ *
+ * We register all known parent clocks with the common clock code
+ * using a packed array (i.e., no empty slots) of (parent) clock
+ * names, and refer to them later using indexes into that array.
+ * We maintain an array of selector values indexed by common clock
+ * index values in order to map between these common clock indexes
+ * and the selector values used by the hardware.
+ *
+ * Like dividers, a selector can be modified, but to do so a clock
+ * must be enabled, and a trigger must be used to commit the change.
+ */
+struct bcm_clk_sel {
+ u32 offset; /* selector register offset */
+ u32 shift; /* field shift */
+ u32 width; /* field width */
+
+ u32 parent_count; /* number of entries in parent_sel[] */
+ u32 *parent_sel; /* array of parent selector values */
+ u8 clk_index; /* current selected index in parent_sel[] */
+};
+
+/* Selector initialization macro */
+#define SELECTOR(_offset, _shift, _width) \
+ { \
+ .offset = (_offset), \
+ .shift = (_shift), \
+ .width = (_width), \
+ .clk_index = BAD_CLK_INDEX, \
+ }
+
+/*
+ * Making changes to a variable divider or a selector for a clock
+ * requires the use of a trigger. A trigger is defined by a single
+ * bit within a register. To signal a change, a 1 is written into
+ * that bit. To determine when the change has been completed, that
+ * trigger bit is polled; the read value will be 1 while the change
+ * is in progress, and 0 when it is complete.
+ *
+ * Occasionally a clock will have more than one trigger. In this
+ * case, the "pre-trigger" will be used when changing a clock's
+ * selector and/or its pre-divider.
+ */
+struct bcm_clk_trig {
+ u32 offset; /* trigger register offset */
+ u32 bit; /* trigger bit */
+ u32 flags; /* BCM_CLK_TRIG_FLAGS_* below */
+};
+
+/*
+ * Trigger flags:
+ * EXISTS means this trigger exists
+ */
+#define BCM_CLK_TRIG_FLAGS_EXISTS ((u32)1 << 0) /* Trigger is valid */
+
+/* Trigger initialization macro */
+#define TRIGGER(_offset, _bit) \
+ { \
+ .offset = (_offset), \
+ .bit = (_bit), \
+ .flags = FLAG(TRIG, EXISTS), \
+ }
+
+struct peri_clk_data {
+ struct bcm_clk_gate gate;
+ struct bcm_clk_trig pre_trig;
+ struct bcm_clk_div pre_div;
+ struct bcm_clk_trig trig;
+ struct bcm_clk_div div;
+ struct bcm_clk_sel sel;
+ const char *clocks[]; /* must be last; use CLOCKS() to declare */
+};
+#define CLOCKS(...) { __VA_ARGS__, NULL, }
+#define NO_CLOCKS { NULL, } /* Must use of no parent clocks */
+
+struct kona_clk {
+ struct clk_hw hw;
+ struct clk_init_data init_data;
+ const char *name; /* name of this clock */
+ struct ccu_data *ccu; /* ccu this clock is associated with */
+ enum bcm_clk_type type;
+ union {
+ void *data;
+ struct peri_clk_data *peri;
+ };
+};
+#define to_kona_clk(_hw) \
+ container_of(_hw, struct kona_clk, hw)
+
+/* Exported globals */
+
+extern struct clk_ops kona_peri_clk_ops;
+
+/* Help functions */
+
+#define PERI_CLK_SETUP(clks, ccu, id, name) \
+ clks[id] = kona_clk_setup(ccu, #name, bcm_clk_peri, &name ## _data)
+
+/* Externally visible functions */
+
+extern u64 do_div_round_closest(u64 dividend, unsigned long divisor);
+extern u64 scaled_div_max(struct bcm_clk_div *div);
+extern u64 scaled_div_build(struct bcm_clk_div *div, u32 div_value,
+ u32 billionths);
+
+extern struct clk *kona_clk_setup(struct ccu_data *ccu, const char *name,
+ enum bcm_clk_type type, void *data);
+extern void __init kona_dt_ccu_setup(struct device_node *node,
+ int (*ccu_clks_setup)(struct ccu_data *));
+extern bool __init kona_ccu_init(struct ccu_data *ccu);
+
+#endif /* _CLK_KONA_H */
diff --git a/drivers/clk/clk-axi-clkgen.c b/drivers/clk/clk-axi-clkgen.c
index 8137327847c3..1127ee46b802 100644
--- a/drivers/clk/clk-axi-clkgen.c
+++ b/drivers/clk/clk-axi-clkgen.c
@@ -17,23 +17,75 @@
#include <linux/module.h>
#include <linux/err.h>
-#define AXI_CLKGEN_REG_UPDATE_ENABLE 0x04
-#define AXI_CLKGEN_REG_CLK_OUT1 0x08
-#define AXI_CLKGEN_REG_CLK_OUT2 0x0c
-#define AXI_CLKGEN_REG_CLK_DIV 0x10
-#define AXI_CLKGEN_REG_CLK_FB1 0x14
-#define AXI_CLKGEN_REG_CLK_FB2 0x18
-#define AXI_CLKGEN_REG_LOCK1 0x1c
-#define AXI_CLKGEN_REG_LOCK2 0x20
-#define AXI_CLKGEN_REG_LOCK3 0x24
-#define AXI_CLKGEN_REG_FILTER1 0x28
-#define AXI_CLKGEN_REG_FILTER2 0x2c
+#define AXI_CLKGEN_V1_REG_UPDATE_ENABLE 0x04
+#define AXI_CLKGEN_V1_REG_CLK_OUT1 0x08
+#define AXI_CLKGEN_V1_REG_CLK_OUT2 0x0c
+#define AXI_CLKGEN_V1_REG_CLK_DIV 0x10
+#define AXI_CLKGEN_V1_REG_CLK_FB1 0x14
+#define AXI_CLKGEN_V1_REG_CLK_FB2 0x18
+#define AXI_CLKGEN_V1_REG_LOCK1 0x1c
+#define AXI_CLKGEN_V1_REG_LOCK2 0x20
+#define AXI_CLKGEN_V1_REG_LOCK3 0x24
+#define AXI_CLKGEN_V1_REG_FILTER1 0x28
+#define AXI_CLKGEN_V1_REG_FILTER2 0x2c
+
+#define AXI_CLKGEN_V2_REG_RESET 0x40
+#define AXI_CLKGEN_V2_REG_DRP_CNTRL 0x70
+#define AXI_CLKGEN_V2_REG_DRP_STATUS 0x74
+
+#define AXI_CLKGEN_V2_RESET_MMCM_ENABLE BIT(1)
+#define AXI_CLKGEN_V2_RESET_ENABLE BIT(0)
+
+#define AXI_CLKGEN_V2_DRP_CNTRL_SEL BIT(29)
+#define AXI_CLKGEN_V2_DRP_CNTRL_READ BIT(28)
+
+#define AXI_CLKGEN_V2_DRP_STATUS_BUSY BIT(16)
+
+#define MMCM_REG_CLKOUT0_1 0x08
+#define MMCM_REG_CLKOUT0_2 0x09
+#define MMCM_REG_CLK_FB1 0x14
+#define MMCM_REG_CLK_FB2 0x15
+#define MMCM_REG_CLK_DIV 0x16
+#define MMCM_REG_LOCK1 0x18
+#define MMCM_REG_LOCK2 0x19
+#define MMCM_REG_LOCK3 0x1a
+#define MMCM_REG_FILTER1 0x4e
+#define MMCM_REG_FILTER2 0x4f
+
+struct axi_clkgen;
+
+struct axi_clkgen_mmcm_ops {
+ void (*enable)(struct axi_clkgen *axi_clkgen, bool enable);
+ int (*write)(struct axi_clkgen *axi_clkgen, unsigned int reg,
+ unsigned int val, unsigned int mask);
+ int (*read)(struct axi_clkgen *axi_clkgen, unsigned int reg,
+ unsigned int *val);
+};
struct axi_clkgen {
void __iomem *base;
+ const struct axi_clkgen_mmcm_ops *mmcm_ops;
struct clk_hw clk_hw;
};
+static void axi_clkgen_mmcm_enable(struct axi_clkgen *axi_clkgen,
+ bool enable)
+{
+ axi_clkgen->mmcm_ops->enable(axi_clkgen, enable);
+}
+
+static int axi_clkgen_mmcm_write(struct axi_clkgen *axi_clkgen,
+ unsigned int reg, unsigned int val, unsigned int mask)
+{
+ return axi_clkgen->mmcm_ops->write(axi_clkgen, reg, val, mask);
+}
+
+static int axi_clkgen_mmcm_read(struct axi_clkgen *axi_clkgen,
+ unsigned int reg, unsigned int *val)
+{
+ return axi_clkgen->mmcm_ops->read(axi_clkgen, reg, val);
+}
+
static uint32_t axi_clkgen_lookup_filter(unsigned int m)
{
switch (m) {
@@ -156,6 +208,148 @@ static void axi_clkgen_read(struct axi_clkgen *axi_clkgen,
*val = readl(axi_clkgen->base + reg);
}
+static unsigned int axi_clkgen_v1_map_mmcm_reg(unsigned int reg)
+{
+ switch (reg) {
+ case MMCM_REG_CLKOUT0_1:
+ return AXI_CLKGEN_V1_REG_CLK_OUT1;
+ case MMCM_REG_CLKOUT0_2:
+ return AXI_CLKGEN_V1_REG_CLK_OUT2;
+ case MMCM_REG_CLK_FB1:
+ return AXI_CLKGEN_V1_REG_CLK_FB1;
+ case MMCM_REG_CLK_FB2:
+ return AXI_CLKGEN_V1_REG_CLK_FB2;
+ case MMCM_REG_CLK_DIV:
+ return AXI_CLKGEN_V1_REG_CLK_DIV;
+ case MMCM_REG_LOCK1:
+ return AXI_CLKGEN_V1_REG_LOCK1;
+ case MMCM_REG_LOCK2:
+ return AXI_CLKGEN_V1_REG_LOCK2;
+ case MMCM_REG_LOCK3:
+ return AXI_CLKGEN_V1_REG_LOCK3;
+ case MMCM_REG_FILTER1:
+ return AXI_CLKGEN_V1_REG_FILTER1;
+ case MMCM_REG_FILTER2:
+ return AXI_CLKGEN_V1_REG_FILTER2;
+ default:
+ return 0;
+ }
+}
+
+static int axi_clkgen_v1_mmcm_write(struct axi_clkgen *axi_clkgen,
+ unsigned int reg, unsigned int val, unsigned int mask)
+{
+ reg = axi_clkgen_v1_map_mmcm_reg(reg);
+ if (reg == 0)
+ return -EINVAL;
+
+ axi_clkgen_write(axi_clkgen, reg, val);
+
+ return 0;
+}
+
+static int axi_clkgen_v1_mmcm_read(struct axi_clkgen *axi_clkgen,
+ unsigned int reg, unsigned int *val)
+{
+ reg = axi_clkgen_v1_map_mmcm_reg(reg);
+ if (reg == 0)
+ return -EINVAL;
+
+ axi_clkgen_read(axi_clkgen, reg, val);
+
+ return 0;
+}
+
+static void axi_clkgen_v1_mmcm_enable(struct axi_clkgen *axi_clkgen,
+ bool enable)
+{
+ axi_clkgen_write(axi_clkgen, AXI_CLKGEN_V1_REG_UPDATE_ENABLE, enable);
+}
+
+static const struct axi_clkgen_mmcm_ops axi_clkgen_v1_mmcm_ops = {
+ .write = axi_clkgen_v1_mmcm_write,
+ .read = axi_clkgen_v1_mmcm_read,
+ .enable = axi_clkgen_v1_mmcm_enable,
+};
+
+static int axi_clkgen_wait_non_busy(struct axi_clkgen *axi_clkgen)
+{
+ unsigned int timeout = 10000;
+ unsigned int val;
+
+ do {
+ axi_clkgen_read(axi_clkgen, AXI_CLKGEN_V2_REG_DRP_STATUS, &val);
+ } while ((val & AXI_CLKGEN_V2_DRP_STATUS_BUSY) && --timeout);
+
+ if (val & AXI_CLKGEN_V2_DRP_STATUS_BUSY)
+ return -EIO;
+
+ return val & 0xffff;
+}
+
+static int axi_clkgen_v2_mmcm_read(struct axi_clkgen *axi_clkgen,
+ unsigned int reg, unsigned int *val)
+{
+ unsigned int reg_val;
+ int ret;
+
+ ret = axi_clkgen_wait_non_busy(axi_clkgen);
+ if (ret < 0)
+ return ret;
+
+ reg_val = AXI_CLKGEN_V2_DRP_CNTRL_SEL | AXI_CLKGEN_V2_DRP_CNTRL_READ;
+ reg_val |= (reg << 16);
+
+ axi_clkgen_write(axi_clkgen, AXI_CLKGEN_V2_REG_DRP_CNTRL, reg_val);
+
+ ret = axi_clkgen_wait_non_busy(axi_clkgen);
+ if (ret < 0)
+ return ret;
+
+ *val = ret;
+
+ return 0;
+}
+
+static int axi_clkgen_v2_mmcm_write(struct axi_clkgen *axi_clkgen,
+ unsigned int reg, unsigned int val, unsigned int mask)
+{
+ unsigned int reg_val = 0;
+ int ret;
+
+ ret = axi_clkgen_wait_non_busy(axi_clkgen);
+ if (ret < 0)
+ return ret;
+
+ if (mask != 0xffff) {
+ axi_clkgen_v2_mmcm_read(axi_clkgen, reg, &reg_val);
+ reg_val &= ~mask;
+ }
+
+ reg_val |= AXI_CLKGEN_V2_DRP_CNTRL_SEL | (reg << 16) | (val & mask);
+
+ axi_clkgen_write(axi_clkgen, AXI_CLKGEN_V2_REG_DRP_CNTRL, reg_val);
+
+ return 0;
+}
+
+static void axi_clkgen_v2_mmcm_enable(struct axi_clkgen *axi_clkgen,
+ bool enable)
+{
+ unsigned int val = AXI_CLKGEN_V2_RESET_ENABLE;
+
+ if (enable)
+ val |= AXI_CLKGEN_V2_RESET_MMCM_ENABLE;
+
+ axi_clkgen_write(axi_clkgen, AXI_CLKGEN_V2_REG_RESET, val);
+}
+
+static const struct axi_clkgen_mmcm_ops axi_clkgen_v2_mmcm_ops = {
+ .write = axi_clkgen_v2_mmcm_write,
+ .read = axi_clkgen_v2_mmcm_read,
+ .enable = axi_clkgen_v2_mmcm_enable,
+};
+
static struct axi_clkgen *clk_hw_to_axi_clkgen(struct clk_hw *clk_hw)
{
return container_of(clk_hw, struct axi_clkgen, clk_hw);
@@ -184,33 +378,29 @@ static int axi_clkgen_set_rate(struct clk_hw *clk_hw,
filter = axi_clkgen_lookup_filter(m - 1);
lock = axi_clkgen_lookup_lock(m - 1);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_UPDATE_ENABLE, 0);
-
axi_clkgen_calc_clk_params(dout, &low, &high, &edge, &nocount);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_CLK_OUT1,
- (high << 6) | low);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_CLK_OUT2,
- (edge << 7) | (nocount << 6));
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_CLKOUT0_1,
+ (high << 6) | low, 0xefff);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_CLKOUT0_2,
+ (edge << 7) | (nocount << 6), 0x03ff);
axi_clkgen_calc_clk_params(d, &low, &high, &edge, &nocount);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_CLK_DIV,
- (edge << 13) | (nocount << 12) | (high << 6) | low);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_CLK_DIV,
+ (edge << 13) | (nocount << 12) | (high << 6) | low, 0x3fff);
axi_clkgen_calc_clk_params(m, &low, &high, &edge, &nocount);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_CLK_FB1,
- (high << 6) | low);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_CLK_FB2,
- (edge << 7) | (nocount << 6));
-
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_LOCK1, lock & 0x3ff);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_LOCK2,
- (((lock >> 16) & 0x1f) << 10) | 0x1);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_LOCK3,
- (((lock >> 24) & 0x1f) << 10) | 0x3e9);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_FILTER1, filter >> 16);
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_FILTER2, filter);
-
- axi_clkgen_write(axi_clkgen, AXI_CLKGEN_REG_UPDATE_ENABLE, 1);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_CLK_FB1,
+ (high << 6) | low, 0xefff);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_CLK_FB2,
+ (edge << 7) | (nocount << 6), 0x03ff);
+
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_LOCK1, lock & 0x3ff, 0x3ff);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_LOCK2,
+ (((lock >> 16) & 0x1f) << 10) | 0x1, 0x7fff);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_LOCK3,
+ (((lock >> 24) & 0x1f) << 10) | 0x3e9, 0x7fff);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_FILTER1, filter >> 16, 0x9900);
+ axi_clkgen_mmcm_write(axi_clkgen, MMCM_REG_FILTER2, filter, 0x9900);
return 0;
}
@@ -236,11 +426,11 @@ static unsigned long axi_clkgen_recalc_rate(struct clk_hw *clk_hw,
unsigned int reg;
unsigned long long tmp;
- axi_clkgen_read(axi_clkgen, AXI_CLKGEN_REG_CLK_OUT1, &reg);
+ axi_clkgen_mmcm_read(axi_clkgen, MMCM_REG_CLKOUT0_1, &reg);
dout = (reg & 0x3f) + ((reg >> 6) & 0x3f);
- axi_clkgen_read(axi_clkgen, AXI_CLKGEN_REG_CLK_DIV, &reg);
+ axi_clkgen_mmcm_read(axi_clkgen, MMCM_REG_CLK_DIV, &reg);
d = (reg & 0x3f) + ((reg >> 6) & 0x3f);
- axi_clkgen_read(axi_clkgen, AXI_CLKGEN_REG_CLK_FB1, &reg);
+ axi_clkgen_mmcm_read(axi_clkgen, MMCM_REG_CLK_FB1, &reg);
m = (reg & 0x3f) + ((reg >> 6) & 0x3f);
if (d == 0 || dout == 0)
@@ -255,14 +445,45 @@ static unsigned long axi_clkgen_recalc_rate(struct clk_hw *clk_hw,
return tmp;
}
+static int axi_clkgen_enable(struct clk_hw *clk_hw)
+{
+ struct axi_clkgen *axi_clkgen = clk_hw_to_axi_clkgen(clk_hw);
+
+ axi_clkgen_mmcm_enable(axi_clkgen, true);
+
+ return 0;
+}
+
+static void axi_clkgen_disable(struct clk_hw *clk_hw)
+{
+ struct axi_clkgen *axi_clkgen = clk_hw_to_axi_clkgen(clk_hw);
+
+ axi_clkgen_mmcm_enable(axi_clkgen, false);
+}
+
static const struct clk_ops axi_clkgen_ops = {
.recalc_rate = axi_clkgen_recalc_rate,
.round_rate = axi_clkgen_round_rate,
.set_rate = axi_clkgen_set_rate,
+ .enable = axi_clkgen_enable,
+ .disable = axi_clkgen_disable,
};
+static const struct of_device_id axi_clkgen_ids[] = {
+ {
+ .compatible = "adi,axi-clkgen-1.00.a",
+ .data = &axi_clkgen_v1_mmcm_ops
+ }, {
+ .compatible = "adi,axi-clkgen-2.00.a",
+ .data = &axi_clkgen_v2_mmcm_ops,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, axi_clkgen_ids);
+
static int axi_clkgen_probe(struct platform_device *pdev)
{
+ const struct of_device_id *id;
struct axi_clkgen *axi_clkgen;
struct clk_init_data init;
const char *parent_name;
@@ -270,10 +491,19 @@ static int axi_clkgen_probe(struct platform_device *pdev)
struct resource *mem;
struct clk *clk;
+ if (!pdev->dev.of_node)
+ return -ENODEV;
+
+ id = of_match_node(axi_clkgen_ids, pdev->dev.of_node);
+ if (!id)
+ return -ENODEV;
+
axi_clkgen = devm_kzalloc(&pdev->dev, sizeof(*axi_clkgen), GFP_KERNEL);
if (!axi_clkgen)
return -ENOMEM;
+ axi_clkgen->mmcm_ops = id->data;
+
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
axi_clkgen->base = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(axi_clkgen->base))
@@ -289,10 +519,12 @@ static int axi_clkgen_probe(struct platform_device *pdev)
init.name = clk_name;
init.ops = &axi_clkgen_ops;
- init.flags = 0;
+ init.flags = CLK_SET_RATE_GATE;
init.parent_names = &parent_name;
init.num_parents = 1;
+ axi_clkgen_mmcm_enable(axi_clkgen, false);
+
axi_clkgen->clk_hw.init = &init;
clk = devm_clk_register(&pdev->dev, &axi_clkgen->clk_hw);
if (IS_ERR(clk))
@@ -309,12 +541,6 @@ static int axi_clkgen_remove(struct platform_device *pdev)
return 0;
}
-static const struct of_device_id axi_clkgen_ids[] = {
- { .compatible = "adi,axi-clkgen-1.00.a" },
- { },
-};
-MODULE_DEVICE_TABLE(of, axi_clkgen_ids);
-
static struct platform_driver axi_clkgen_driver = {
.driver = {
.name = "adi-axi-clkgen",
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 5543b7df8e16..ec22112e569f 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -24,7 +24,7 @@
* Traits of this clock:
* prepare - clk_prepare only ensures that parents are prepared
* enable - clk_enable only ensures that parents are enabled
- * rate - rate is adjustable. clk->rate = parent->rate / divisor
+ * rate - rate is adjustable. clk->rate = DIV_ROUND_UP(parent->rate / divisor)
* parent - fixed parent. No clk_set_parent support
*/
@@ -115,7 +115,7 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
return parent_rate;
}
- return parent_rate / div;
+ return DIV_ROUND_UP(parent_rate, div);
}
/*
@@ -185,7 +185,7 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
}
parent_rate = __clk_round_rate(__clk_get_parent(hw->clk),
MULT_ROUND_UP(rate, i));
- now = parent_rate / i;
+ now = DIV_ROUND_UP(parent_rate, i);
if (now <= rate && now > best) {
bestdiv = i;
best = now;
@@ -207,7 +207,7 @@ static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
int div;
div = clk_divider_bestdiv(hw, rate, prate);
- return *prate / div;
+ return DIV_ROUND_UP(*prate, div);
}
static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -218,7 +218,7 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long flags = 0;
u32 val;
- div = parent_rate / rate;
+ div = DIV_ROUND_UP(parent_rate, rate);
value = _get_val(divider, div);
if (value > div_mask(divider))
diff --git a/drivers/clk/clk-moxart.c b/drivers/clk/clk-moxart.c
new file mode 100644
index 000000000000..30a3b6999e10
--- /dev/null
+++ b/drivers/clk/clk-moxart.c
@@ -0,0 +1,97 @@
+/*
+ * MOXA ART SoCs clock driver.
+ *
+ * Copyright (C) 2013 Jonas Jensen
+ *
+ * Jonas Jensen <jonas.jensen@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/clkdev.h>
+
+void __init moxart_of_pll_clk_init(struct device_node *node)
+{
+ static void __iomem *base;
+ struct clk *clk, *ref_clk;
+ unsigned int mul;
+ const char *name = node->name;
+ const char *parent_name;
+
+ of_property_read_string(node, "clock-output-names", &name);
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ base = of_iomap(node, 0);
+ if (!base) {
+ pr_err("%s: of_iomap failed\n", node->full_name);
+ return;
+ }
+
+ mul = readl(base + 0x30) >> 3 & 0x3f;
+ iounmap(base);
+
+ ref_clk = of_clk_get(node, 0);
+ if (IS_ERR(ref_clk)) {
+ pr_err("%s: of_clk_get failed\n", node->full_name);
+ return;
+ }
+
+ clk = clk_register_fixed_factor(NULL, name, parent_name, 0, mul, 1);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to register clock\n", node->full_name);
+ return;
+ }
+
+ clk_register_clkdev(clk, NULL, name);
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+CLK_OF_DECLARE(moxart_pll_clock, "moxa,moxart-pll-clock",
+ moxart_of_pll_clk_init);
+
+void __init moxart_of_apb_clk_init(struct device_node *node)
+{
+ static void __iomem *base;
+ struct clk *clk, *pll_clk;
+ unsigned int div, val;
+ unsigned int div_idx[] = { 2, 3, 4, 6, 8};
+ const char *name = node->name;
+ const char *parent_name;
+
+ of_property_read_string(node, "clock-output-names", &name);
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ base = of_iomap(node, 0);
+ if (!base) {
+ pr_err("%s: of_iomap failed\n", node->full_name);
+ return;
+ }
+
+ val = readl(base + 0xc) >> 4 & 0x7;
+ iounmap(base);
+
+ if (val > 4)
+ val = 0;
+ div = div_idx[val] * 2;
+
+ pll_clk = of_clk_get(node, 0);
+ if (IS_ERR(pll_clk)) {
+ pr_err("%s: of_clk_get failed\n", node->full_name);
+ return;
+ }
+
+ clk = clk_register_fixed_factor(NULL, name, parent_name, 0, 1, div);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to register clock\n", node->full_name);
+ return;
+ }
+
+ clk_register_clkdev(clk, NULL, name);
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+CLK_OF_DECLARE(moxart_apb_clock, "moxa,moxart-apb-clock",
+ moxart_of_apb_clk_init);
diff --git a/drivers/clk/clk-nomadik.c b/drivers/clk/clk-nomadik.c
index 6a934a5296bd..05e04ce0f148 100644
--- a/drivers/clk/clk-nomadik.c
+++ b/drivers/clk/clk-nomadik.c
@@ -494,6 +494,9 @@ static const struct file_operations nomadik_src_clk_debugfs_ops = {
static int __init nomadik_src_clk_init_debugfs(void)
{
+ /* Vital for multiplatform */
+ if (!src_base)
+ return -ENODEV;
src_pcksr0_boot = readl(src_base + SRC_PCKSR0);
src_pcksr1_boot = readl(src_base + SRC_PCKSR1);
debugfs_create_file("nomadik-src-clk", S_IFREG | S_IRUGO,
diff --git a/drivers/clk/clk-ppc-corenet.c b/drivers/clk/clk-ppc-corenet.c
index c4f76ed914b0..8b284be4efa4 100644
--- a/drivers/clk/clk-ppc-corenet.c
+++ b/drivers/clk/clk-ppc-corenet.c
@@ -27,7 +27,6 @@ struct cmux_clk {
#define CLKSEL_ADJUST BIT(0)
#define to_cmux_clk(p) container_of(p, struct cmux_clk, hw)
-static void __iomem *base;
static unsigned int clocks_per_pll;
static int cmux_set_parent(struct clk_hw *hw, u8 idx)
@@ -100,7 +99,11 @@ static void __init core_mux_init(struct device_node *np)
pr_err("%s: could not allocate cmux_clk\n", __func__);
goto err_name;
}
- cmux_clk->reg = base + offset;
+ cmux_clk->reg = of_iomap(np, 0);
+ if (!cmux_clk->reg) {
+ pr_err("%s: could not map register\n", __func__);
+ goto err_clk;
+ }
node = of_find_compatible_node(NULL, NULL, "fsl,p4080-clockgen");
if (node && (offset >= 0x80))
@@ -143,38 +146,39 @@ err_name:
static void __init core_pll_init(struct device_node *np)
{
- u32 offset, mult;
+ u32 mult;
int i, rc, count;
const char *clk_name, *parent_name;
struct clk_onecell_data *onecell_data;
struct clk **subclks;
+ void __iomem *base;
- rc = of_property_read_u32(np, "reg", &offset);
- if (rc) {
- pr_err("%s: could not get reg property\n", np->name);
+ base = of_iomap(np, 0);
+ if (!base) {
+ pr_err("clk-ppc: iomap error\n");
return;
}
/* get the multiple of PLL */
- mult = ioread32be(base + offset);
+ mult = ioread32be(base);
/* check if this PLL is disabled */
if (mult & PLL_KILL) {
pr_debug("PLL:%s is disabled\n", np->name);
- return;
+ goto err_map;
}
mult = (mult >> 1) & 0x3f;
parent_name = of_clk_get_parent_name(np, 0);
if (!parent_name) {
pr_err("PLL: %s must have a parent\n", np->name);
- return;
+ goto err_map;
}
count = of_property_count_strings(np, "clock-output-names");
if (count < 0 || count > 4) {
pr_err("%s: clock is not supported\n", np->name);
- return;
+ goto err_map;
}
/* output clock number per PLL */
@@ -183,7 +187,7 @@ static void __init core_pll_init(struct device_node *np)
subclks = kzalloc(sizeof(struct clk *) * count, GFP_KERNEL);
if (!subclks) {
pr_err("%s: could not allocate subclks\n", __func__);
- return;
+ goto err_map;
}
onecell_data = kzalloc(sizeof(struct clk_onecell_data), GFP_KERNEL);
@@ -230,30 +234,52 @@ static void __init core_pll_init(struct device_node *np)
goto err_cell;
}
+ iounmap(base);
return;
err_cell:
kfree(onecell_data);
err_clks:
kfree(subclks);
+err_map:
+ iounmap(base);
+}
+
+static void __init sysclk_init(struct device_node *node)
+{
+ struct clk *clk;
+ const char *clk_name = node->name;
+ struct device_node *np = of_get_parent(node);
+ u32 rate;
+
+ if (!np) {
+ pr_err("ppc-clk: could not get parent node\n");
+ return;
+ }
+
+ if (of_property_read_u32(np, "clock-frequency", &rate)) {
+ of_node_put(node);
+ return;
+ }
+
+ of_property_read_string(np, "clock-output-names", &clk_name);
+
+ clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT, rate);
+ if (!IS_ERR(clk))
+ of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
static const struct of_device_id clk_match[] __initconst = {
- { .compatible = "fixed-clock", .data = of_fixed_clk_setup, },
- { .compatible = "fsl,core-pll-clock", .data = core_pll_init, },
- { .compatible = "fsl,core-mux-clock", .data = core_mux_init, },
+ { .compatible = "fsl,qoriq-sysclk-1.0", .data = sysclk_init, },
+ { .compatible = "fsl,qoriq-sysclk-2.0", .data = sysclk_init, },
+ { .compatible = "fsl,qoriq-core-pll-1.0", .data = core_pll_init, },
+ { .compatible = "fsl,qoriq-core-pll-2.0", .data = core_pll_init, },
+ { .compatible = "fsl,qoriq-core-mux-1.0", .data = core_mux_init, },
+ { .compatible = "fsl,qoriq-core-mux-2.0", .data = core_mux_init, },
{}
};
static int __init ppc_corenet_clk_probe(struct platform_device *pdev)
{
- struct device_node *np;
-
- np = pdev->dev.of_node;
- base = of_iomap(np, 0);
- if (!base) {
- dev_err(&pdev->dev, "iomap error\n");
- return -ENOMEM;
- }
of_clk_init(clk_match);
return 0;
diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c
index 00a3abe103a5..f2f62a1bf61a 100644
--- a/drivers/clk/clk-s2mps11.c
+++ b/drivers/clk/clk-s2mps11.c
@@ -27,6 +27,7 @@
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <linux/mfd/samsung/s2mps11.h>
+#include <linux/mfd/samsung/s5m8767.h>
#include <linux/mfd/samsung/core.h>
#define s2mps11_name(a) (a->hw.init->name)
@@ -48,6 +49,7 @@ struct s2mps11_clk {
struct clk_lookup *lookup;
u32 mask;
bool enabled;
+ unsigned int reg;
};
static struct s2mps11_clk *to_s2mps11_clk(struct clk_hw *hw)
@@ -61,7 +63,7 @@ static int s2mps11_clk_prepare(struct clk_hw *hw)
int ret;
ret = regmap_update_bits(s2mps11->iodev->regmap_pmic,
- S2MPS11_REG_RTC_CTRL,
+ s2mps11->reg,
s2mps11->mask, s2mps11->mask);
if (!ret)
s2mps11->enabled = true;
@@ -74,7 +76,7 @@ static void s2mps11_clk_unprepare(struct clk_hw *hw)
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
int ret;
- ret = regmap_update_bits(s2mps11->iodev->regmap_pmic, S2MPS11_REG_RTC_CTRL,
+ ret = regmap_update_bits(s2mps11->iodev->regmap_pmic, s2mps11->reg,
s2mps11->mask, ~s2mps11->mask);
if (!ret)
@@ -130,9 +132,9 @@ static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev)
int i;
if (!iodev->dev->of_node)
- return NULL;
+ return ERR_PTR(-EINVAL);
- clk_np = of_find_node_by_name(iodev->dev->of_node, "clocks");
+ clk_np = of_get_child_by_name(iodev->dev->of_node, "clocks");
if (!clk_np) {
dev_err(&pdev->dev, "could not find clock sub-node\n");
return ERR_PTR(-EINVAL);
@@ -155,6 +157,7 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct s2mps11_clk *s2mps11_clks, *s2mps11_clk;
struct device_node *clk_np = NULL;
+ unsigned int s2mps11_reg;
int i, ret = 0;
u32 val;
@@ -169,13 +172,26 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
if (IS_ERR(clk_np))
return PTR_ERR(clk_np);
+ switch(platform_get_device_id(pdev)->driver_data) {
+ case S2MPS11X:
+ s2mps11_reg = S2MPS11_REG_RTC_CTRL;
+ break;
+ case S5M8767X:
+ s2mps11_reg = S5M8767_REG_CTRL1;
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid device type\n");
+ return -EINVAL;
+ };
+
for (i = 0; i < S2MPS11_CLKS_NUM; i++, s2mps11_clk++) {
s2mps11_clk->iodev = iodev;
s2mps11_clk->hw.init = &s2mps11_clks_init[i];
s2mps11_clk->mask = 1 << i;
+ s2mps11_clk->reg = s2mps11_reg;
ret = regmap_read(s2mps11_clk->iodev->regmap_pmic,
- S2MPS11_REG_RTC_CTRL, &val);
+ s2mps11_clk->reg, &val);
if (ret < 0)
goto err_reg;
@@ -241,7 +257,8 @@ static int s2mps11_clk_remove(struct platform_device *pdev)
}
static const struct platform_device_id s2mps11_clk_id[] = {
- { "s2mps11-clk", 0},
+ { "s2mps11-clk", S2MPS11X},
+ { "s5m8767-clk", S5M8767X},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_clk_id);
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 5517944495d8..dff0373f53c1 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -277,6 +277,10 @@ static int clk_debug_create_one(struct clk *clk, struct dentry *pdentry)
if (!d)
goto err_out;
+ if (clk->ops->debug_init)
+ if (clk->ops->debug_init(clk->hw, clk->dentry))
+ goto err_out;
+
ret = 0;
goto out;
@@ -1339,8 +1343,11 @@ static int __clk_speculate_rates(struct clk *clk, unsigned long parent_rate)
if (clk->notifier_count)
ret = __clk_notify(clk, PRE_RATE_CHANGE, clk->rate, new_rate);
- if (ret & NOTIFY_STOP_MASK)
+ if (ret & NOTIFY_STOP_MASK) {
+ pr_debug("%s: clk notifier callback for clock %s aborted with error %d\n",
+ __func__, clk->name, ret);
goto out;
+ }
hlist_for_each_entry(child, &clk->children, child_node) {
ret = __clk_speculate_rates(child, new_rate);
@@ -1588,7 +1595,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
/* notify that we are about to change rates */
fail_clk = clk_propagate_rate_change(top, PRE_RATE_CHANGE);
if (fail_clk) {
- pr_warn("%s: failed to set %s rate\n", __func__,
+ pr_debug("%s: failed to set %s rate\n", __func__,
fail_clk->name);
clk_propagate_rate_change(top, ABORT_RATE_CHANGE);
ret = -EBUSY;
@@ -2226,24 +2233,25 @@ EXPORT_SYMBOL_GPL(devm_clk_unregister);
*/
int __clk_get(struct clk *clk)
{
- if (clk && !try_module_get(clk->owner))
- return 0;
+ if (clk) {
+ if (!try_module_get(clk->owner))
+ return 0;
- kref_get(&clk->ref);
+ kref_get(&clk->ref);
+ }
return 1;
}
void __clk_put(struct clk *clk)
{
- if (WARN_ON_ONCE(IS_ERR(clk)))
+ if (!clk || WARN_ON_ONCE(IS_ERR(clk)))
return;
clk_prepare_lock();
kref_put(&clk->ref, __clk_release);
clk_prepare_unlock();
- if (clk)
- module_put(clk->owner);
+ module_put(clk->owner);
}
/*** clk rate change notifiers ***/
@@ -2259,20 +2267,11 @@ void __clk_put(struct clk *clk)
* re-enter into the clk framework by calling any top-level clk APIs;
* this will cause a nested prepare_lock mutex.
*
- * Pre-change notifier callbacks will be passed the current, pre-change
- * rate of the clk via struct clk_notifier_data.old_rate. The new,
- * post-change rate of the clk is passed via struct
+ * In all notification cases cases (pre, post and abort rate change) the
+ * original clock rate is passed to the callback via struct
+ * clk_notifier_data.old_rate and the new frequency is passed via struct
* clk_notifier_data.new_rate.
*
- * Post-change notifiers will pass the now-current, post-change rate of
- * the clk in both struct clk_notifier_data.old_rate and struct
- * clk_notifier_data.new_rate.
- *
- * Abort-change notifiers are effectively the opposite of pre-change
- * notifiers: the original pre-change clk rate is passed in via struct
- * clk_notifier_data.new_rate and the failed post-change rate is passed
- * in via struct clk_notifier_data.old_rate.
- *
* clk_notifier_register() must be called from non-atomic context.
* Returns -EINVAL if called with null arguments, -ENOMEM upon
* allocation failure; otherwise, passes along the return value of
@@ -2472,7 +2471,7 @@ EXPORT_SYMBOL_GPL(of_clk_del_provider);
struct clk *__of_clk_get_from_provider(struct of_phandle_args *clkspec)
{
struct of_clk_provider *provider;
- struct clk *clk = ERR_PTR(-ENOENT);
+ struct clk *clk = ERR_PTR(-EPROBE_DEFER);
/* Check if we have such a provider in our array */
list_for_each_entry(provider, &of_clk_providers, link) {
@@ -2505,8 +2504,12 @@ EXPORT_SYMBOL_GPL(of_clk_get_parent_count);
const char *of_clk_get_parent_name(struct device_node *np, int index)
{
struct of_phandle_args clkspec;
+ struct property *prop;
const char *clk_name;
+ const __be32 *vp;
+ u32 pv;
int rc;
+ int count;
if (index < 0)
return NULL;
@@ -2516,8 +2519,22 @@ const char *of_clk_get_parent_name(struct device_node *np, int index)
if (rc)
return NULL;
+ index = clkspec.args_count ? clkspec.args[0] : 0;
+ count = 0;
+
+ /* if there is an indices property, use it to transfer the index
+ * specified into an array offset for the clock-output-names property.
+ */
+ of_property_for_each_u32(clkspec.np, "clock-indices", prop, vp, pv) {
+ if (index == pv) {
+ index = count;
+ break;
+ }
+ count++;
+ }
+
if (of_property_read_string_index(clkspec.np, "clock-output-names",
- clkspec.args_count ? clkspec.args[0] : 0,
+ index,
&clk_name) < 0)
clk_name = clkspec.np->name;
@@ -2526,24 +2543,99 @@ const char *of_clk_get_parent_name(struct device_node *np, int index)
}
EXPORT_SYMBOL_GPL(of_clk_get_parent_name);
+struct clock_provider {
+ of_clk_init_cb_t clk_init_cb;
+ struct device_node *np;
+ struct list_head node;
+};
+
+static LIST_HEAD(clk_provider_list);
+
+/*
+ * This function looks for a parent clock. If there is one, then it
+ * checks that the provider for this parent clock was initialized, in
+ * this case the parent clock will be ready.
+ */
+static int parent_ready(struct device_node *np)
+{
+ int i = 0;
+
+ while (true) {
+ struct clk *clk = of_clk_get(np, i);
+
+ /* this parent is ready we can check the next one */
+ if (!IS_ERR(clk)) {
+ clk_put(clk);
+ i++;
+ continue;
+ }
+
+ /* at least one parent is not ready, we exit now */
+ if (PTR_ERR(clk) == -EPROBE_DEFER)
+ return 0;
+
+ /*
+ * Here we make assumption that the device tree is
+ * written correctly. So an error means that there is
+ * no more parent. As we didn't exit yet, then the
+ * previous parent are ready. If there is no clock
+ * parent, no need to wait for them, then we can
+ * consider their absence as being ready
+ */
+ return 1;
+ }
+}
+
/**
* of_clk_init() - Scan and init clock providers from the DT
* @matches: array of compatible values and init functions for providers.
*
- * This function scans the device tree for matching clock providers and
- * calls their initialization functions
+ * This function scans the device tree for matching clock providers
+ * and calls their initialization functions. It also does it by trying
+ * to follow the dependencies.
*/
void __init of_clk_init(const struct of_device_id *matches)
{
const struct of_device_id *match;
struct device_node *np;
+ struct clock_provider *clk_provider, *next;
+ bool is_init_done;
+ bool force = false;
if (!matches)
matches = &__clk_of_table;
+ /* First prepare the list of the clocks providers */
for_each_matching_node_and_match(np, matches, &match) {
- of_clk_init_cb_t clk_init_cb = match->data;
- clk_init_cb(np);
+ struct clock_provider *parent =
+ kzalloc(sizeof(struct clock_provider), GFP_KERNEL);
+
+ parent->clk_init_cb = match->data;
+ parent->np = np;
+ list_add_tail(&parent->node, &clk_provider_list);
+ }
+
+ while (!list_empty(&clk_provider_list)) {
+ is_init_done = false;
+ list_for_each_entry_safe(clk_provider, next,
+ &clk_provider_list, node) {
+ if (force || parent_ready(clk_provider->np)) {
+ clk_provider->clk_init_cb(clk_provider->np);
+ list_del(&clk_provider->node);
+ kfree(clk_provider);
+ is_init_done = true;
+ }
+ }
+
+ /*
+ * We didn't manage to initialize any of the
+ * remaining providers during the last loop, so now we
+ * initialize all the remaining ones unconditionally
+ * in case the clock parent was not mandatory
+ */
+ if (!is_init_done)
+ force = true;
+
}
}
#endif
diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
index 48f67218247c..a360b2eca5cb 100644
--- a/drivers/clk/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -167,6 +167,8 @@ struct clk *clk_get(struct device *dev, const char *con_id)
clk = of_clk_get_by_name(dev->of_node, con_id);
if (!IS_ERR(clk))
return clk;
+ if (PTR_ERR(clk) == -EPROBE_DEFER)
+ return clk;
}
return clk_get_sys(dev_id, con_id);
diff --git a/drivers/clk/hisilicon/Makefile b/drivers/clk/hisilicon/Makefile
index a049108341fc..40b33c6a8257 100644
--- a/drivers/clk/hisilicon/Makefile
+++ b/drivers/clk/hisilicon/Makefile
@@ -2,4 +2,7 @@
# Hisilicon Clock specific Makefile
#
-obj-y += clk.o clkgate-separated.o clk-hi3620.o
+obj-y += clk.o clkgate-separated.o
+
+obj-$(CONFIG_ARCH_HI3xxx) += clk-hi3620.o
+obj-$(CONFIG_ARCH_HIP04) += clk-hip04.o
diff --git a/drivers/clk/hisilicon/clk-hi3620.c b/drivers/clk/hisilicon/clk-hi3620.c
index f24ad6a3a797..339945d2503b 100644
--- a/drivers/clk/hisilicon/clk-hi3620.c
+++ b/drivers/clk/hisilicon/clk-hi3620.c
@@ -210,33 +210,297 @@ static struct hisi_gate_clock hi3620_seperated_gate_clks[] __initdata = {
static void __init hi3620_clk_init(struct device_node *np)
{
- void __iomem *base;
+ struct hisi_clock_data *clk_data;
- if (np) {
- base = of_iomap(np, 0);
- if (!base) {
- pr_err("failed to map Hi3620 clock registers\n");
- return;
- }
- } else {
- pr_err("failed to find Hi3620 clock node in DTS\n");
+ clk_data = hisi_clk_init(np, HI3620_NR_CLKS);
+ if (!clk_data)
return;
- }
-
- hisi_clk_init(np, HI3620_NR_CLKS);
hisi_clk_register_fixed_rate(hi3620_fixed_rate_clks,
ARRAY_SIZE(hi3620_fixed_rate_clks),
- base);
+ clk_data);
hisi_clk_register_fixed_factor(hi3620_fixed_factor_clks,
ARRAY_SIZE(hi3620_fixed_factor_clks),
- base);
+ clk_data);
hisi_clk_register_mux(hi3620_mux_clks, ARRAY_SIZE(hi3620_mux_clks),
- base);
+ clk_data);
hisi_clk_register_divider(hi3620_div_clks, ARRAY_SIZE(hi3620_div_clks),
- base);
+ clk_data);
hisi_clk_register_gate_sep(hi3620_seperated_gate_clks,
ARRAY_SIZE(hi3620_seperated_gate_clks),
- base);
+ clk_data);
}
CLK_OF_DECLARE(hi3620_clk, "hisilicon,hi3620-clock", hi3620_clk_init);
+
+struct hisi_mmc_clock {
+ unsigned int id;
+ const char *name;
+ const char *parent_name;
+ unsigned long flags;
+ u32 clken_reg;
+ u32 clken_bit;
+ u32 div_reg;
+ u32 div_off;
+ u32 div_bits;
+ u32 drv_reg;
+ u32 drv_off;
+ u32 drv_bits;
+ u32 sam_reg;
+ u32 sam_off;
+ u32 sam_bits;
+};
+
+struct clk_mmc {
+ struct clk_hw hw;
+ u32 id;
+ void __iomem *clken_reg;
+ u32 clken_bit;
+ void __iomem *div_reg;
+ u32 div_off;
+ u32 div_bits;
+ void __iomem *drv_reg;
+ u32 drv_off;
+ u32 drv_bits;
+ void __iomem *sam_reg;
+ u32 sam_off;
+ u32 sam_bits;
+};
+
+#define to_mmc(_hw) container_of(_hw, struct clk_mmc, hw)
+
+static struct hisi_mmc_clock hi3620_mmc_clks[] __initdata = {
+ { HI3620_SD_CIUCLK, "sd_bclk1", "sd_clk", CLK_SET_RATE_PARENT, 0x1f8, 0, 0x1f8, 1, 3, 0x1f8, 4, 4, 0x1f8, 8, 4},
+ { HI3620_MMC_CIUCLK1, "mmc_bclk1", "mmc_clk1", CLK_SET_RATE_PARENT, 0x1f8, 12, 0x1f8, 13, 3, 0x1f8, 16, 4, 0x1f8, 20, 4},
+ { HI3620_MMC_CIUCLK2, "mmc_bclk2", "mmc_clk2", CLK_SET_RATE_PARENT, 0x1f8, 24, 0x1f8, 25, 3, 0x1f8, 28, 4, 0x1fc, 0, 4},
+ { HI3620_MMC_CIUCLK3, "mmc_bclk3", "mmc_clk3", CLK_SET_RATE_PARENT, 0x1fc, 4, 0x1fc, 5, 3, 0x1fc, 8, 4, 0x1fc, 12, 4},
+};
+
+static unsigned long mmc_clk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ switch (parent_rate) {
+ case 26000000:
+ return 13000000;
+ case 180000000:
+ return 25000000;
+ case 360000000:
+ return 50000000;
+ case 720000000:
+ return 100000000;
+ case 1440000000:
+ return 180000000;
+ default:
+ return parent_rate;
+ }
+}
+
+static long mmc_clk_determine_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_p)
+{
+ struct clk_mmc *mclk = to_mmc(hw);
+ unsigned long best = 0;
+
+ if ((rate <= 13000000) && (mclk->id == HI3620_MMC_CIUCLK1)) {
+ rate = 13000000;
+ best = 26000000;
+ } else if (rate <= 26000000) {
+ rate = 25000000;
+ best = 180000000;
+ } else if (rate <= 52000000) {
+ rate = 50000000;
+ best = 360000000;
+ } else if (rate <= 100000000) {
+ rate = 100000000;
+ best = 720000000;
+ } else {
+ /* max is 180M */
+ rate = 180000000;
+ best = 1440000000;
+ }
+ *best_parent_rate = best;
+ return rate;
+}
+
+static u32 mmc_clk_delay(u32 val, u32 para, u32 off, u32 len)
+{
+ u32 i;
+
+ for (i = 0; i < len; i++) {
+ if (para % 2)
+ val |= 1 << (off + i);
+ else
+ val &= ~(1 << (off + i));
+ para = para >> 1;
+ }
+
+ return val;
+}
+
+static int mmc_clk_set_timing(struct clk_hw *hw, unsigned long rate)
+{
+ struct clk_mmc *mclk = to_mmc(hw);
+ unsigned long flags;
+ u32 sam, drv, div, val;
+ static DEFINE_SPINLOCK(mmc_clk_lock);
+
+ switch (rate) {
+ case 13000000:
+ sam = 3;
+ drv = 1;
+ div = 1;
+ break;
+ case 25000000:
+ sam = 13;
+ drv = 6;
+ div = 6;
+ break;
+ case 50000000:
+ sam = 3;
+ drv = 6;
+ div = 6;
+ break;
+ case 100000000:
+ sam = 6;
+ drv = 4;
+ div = 6;
+ break;
+ case 180000000:
+ sam = 6;
+ drv = 4;
+ div = 7;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&mmc_clk_lock, flags);
+
+ val = readl_relaxed(mclk->clken_reg);
+ val &= ~(1 << mclk->clken_bit);
+ writel_relaxed(val, mclk->clken_reg);
+
+ val = readl_relaxed(mclk->sam_reg);
+ val = mmc_clk_delay(val, sam, mclk->sam_off, mclk->sam_bits);
+ writel_relaxed(val, mclk->sam_reg);
+
+ val = readl_relaxed(mclk->drv_reg);
+ val = mmc_clk_delay(val, drv, mclk->drv_off, mclk->drv_bits);
+ writel_relaxed(val, mclk->drv_reg);
+
+ val = readl_relaxed(mclk->div_reg);
+ val = mmc_clk_delay(val, div, mclk->div_off, mclk->div_bits);
+ writel_relaxed(val, mclk->div_reg);
+
+ val = readl_relaxed(mclk->clken_reg);
+ val |= 1 << mclk->clken_bit;
+ writel_relaxed(val, mclk->clken_reg);
+
+ spin_unlock_irqrestore(&mmc_clk_lock, flags);
+
+ return 0;
+}
+
+static int mmc_clk_prepare(struct clk_hw *hw)
+{
+ struct clk_mmc *mclk = to_mmc(hw);
+ unsigned long rate;
+
+ if (mclk->id == HI3620_MMC_CIUCLK1)
+ rate = 13000000;
+ else
+ rate = 25000000;
+
+ return mmc_clk_set_timing(hw, rate);
+}
+
+static int mmc_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ return mmc_clk_set_timing(hw, rate);
+}
+
+static struct clk_ops clk_mmc_ops = {
+ .prepare = mmc_clk_prepare,
+ .determine_rate = mmc_clk_determine_rate,
+ .set_rate = mmc_clk_set_rate,
+ .recalc_rate = mmc_clk_recalc_rate,
+};
+
+static struct clk *hisi_register_clk_mmc(struct hisi_mmc_clock *mmc_clk,
+ void __iomem *base, struct device_node *np)
+{
+ struct clk_mmc *mclk;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ mclk = kzalloc(sizeof(*mclk), GFP_KERNEL);
+ if (!mclk) {
+ pr_err("%s: fail to allocate mmc clk\n", __func__);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ init.name = mmc_clk->name;
+ init.ops = &clk_mmc_ops;
+ init.flags = mmc_clk->flags | CLK_IS_BASIC;
+ init.parent_names = (mmc_clk->parent_name ? &mmc_clk->parent_name : NULL);
+ init.num_parents = (mmc_clk->parent_name ? 1 : 0);
+ mclk->hw.init = &init;
+
+ mclk->id = mmc_clk->id;
+ mclk->clken_reg = base + mmc_clk->clken_reg;
+ mclk->clken_bit = mmc_clk->clken_bit;
+ mclk->div_reg = base + mmc_clk->div_reg;
+ mclk->div_off = mmc_clk->div_off;
+ mclk->div_bits = mmc_clk->div_bits;
+ mclk->drv_reg = base + mmc_clk->drv_reg;
+ mclk->drv_off = mmc_clk->drv_off;
+ mclk->drv_bits = mmc_clk->drv_bits;
+ mclk->sam_reg = base + mmc_clk->sam_reg;
+ mclk->sam_off = mmc_clk->sam_off;
+ mclk->sam_bits = mmc_clk->sam_bits;
+
+ clk = clk_register(NULL, &mclk->hw);
+ if (WARN_ON(IS_ERR(clk)))
+ kfree(mclk);
+ return clk;
+}
+
+static void __init hi3620_mmc_clk_init(struct device_node *node)
+{
+ void __iomem *base;
+ int i, num = ARRAY_SIZE(hi3620_mmc_clks);
+ struct clk_onecell_data *clk_data;
+
+ if (!node) {
+ pr_err("failed to find pctrl node in DTS\n");
+ return;
+ }
+
+ base = of_iomap(node, 0);
+ if (!base) {
+ pr_err("failed to map pctrl\n");
+ return;
+ }
+
+ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (WARN_ON(!clk_data))
+ return;
+
+ clk_data->clks = kzalloc(sizeof(struct clk *) * num, GFP_KERNEL);
+ if (!clk_data->clks) {
+ pr_err("%s: fail to allocate mmc clk\n", __func__);
+ return;
+ }
+
+ for (i = 0; i < num; i++) {
+ struct hisi_mmc_clock *mmc_clk = &hi3620_mmc_clks[i];
+ clk_data->clks[mmc_clk->id] =
+ hisi_register_clk_mmc(mmc_clk, base, node);
+ }
+
+ clk_data->clk_num = num;
+ of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+}
+
+CLK_OF_DECLARE(hi3620_mmc_clk, "hisilicon,hi3620-mmc-clock", hi3620_mmc_clk_init);
diff --git a/drivers/clk/hisilicon/clk-hip04.c b/drivers/clk/hisilicon/clk-hip04.c
new file mode 100644
index 000000000000..132b57a0ce09
--- /dev/null
+++ b/drivers/clk/hisilicon/clk-hip04.c
@@ -0,0 +1,58 @@
+/*
+ * Hisilicon HiP04 clock driver
+ *
+ * Copyright (c) 2013-2014 Hisilicon Limited.
+ * Copyright (c) 2013-2014 Linaro Limited.
+ *
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+
+#include <dt-bindings/clock/hip04-clock.h>
+
+#include "clk.h"
+
+/* fixed rate clocks */
+static struct hisi_fixed_rate_clock hip04_fixed_rate_clks[] __initdata = {
+ { HIP04_OSC50M, "osc50m", NULL, CLK_IS_ROOT, 50000000, },
+ { HIP04_CLK_50M, "clk50m", NULL, CLK_IS_ROOT, 50000000, },
+ { HIP04_CLK_168M, "clk168m", NULL, CLK_IS_ROOT, 168750000, },
+};
+
+static void __init hip04_clk_init(struct device_node *np)
+{
+ struct hisi_clock_data *clk_data;
+
+ clk_data = hisi_clk_init(np, HIP04_NR_CLKS);
+ if (!clk_data)
+ return;
+
+ hisi_clk_register_fixed_rate(hip04_fixed_rate_clks,
+ ARRAY_SIZE(hip04_fixed_rate_clks),
+ clk_data);
+}
+CLK_OF_DECLARE(hip04_clk, "hisilicon,hip04-clock", hip04_clk_init);
diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c
index a3a7152c92d9..276f672e7b1a 100644
--- a/drivers/clk/hisilicon/clk.c
+++ b/drivers/clk/hisilicon/clk.c
@@ -37,23 +37,49 @@
#include "clk.h"
static DEFINE_SPINLOCK(hisi_clk_lock);
-static struct clk **clk_table;
-static struct clk_onecell_data clk_data;
-void __init hisi_clk_init(struct device_node *np, int nr_clks)
+struct hisi_clock_data __init *hisi_clk_init(struct device_node *np,
+ int nr_clks)
{
+ struct hisi_clock_data *clk_data;
+ struct clk **clk_table;
+ void __iomem *base;
+
+ if (np) {
+ base = of_iomap(np, 0);
+ if (!base) {
+ pr_err("failed to map Hisilicon clock registers\n");
+ goto err;
+ }
+ } else {
+ pr_err("failed to find Hisilicon clock node in DTS\n");
+ goto err;
+ }
+
+ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data) {
+ pr_err("%s: could not allocate clock data\n", __func__);
+ goto err;
+ }
+ clk_data->base = base;
+
clk_table = kzalloc(sizeof(struct clk *) * nr_clks, GFP_KERNEL);
if (!clk_table) {
pr_err("%s: could not allocate clock lookup table\n", __func__);
- return;
+ goto err_data;
}
- clk_data.clks = clk_table;
- clk_data.clk_num = nr_clks;
- of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+ clk_data->clk_data.clks = clk_table;
+ clk_data->clk_data.clk_num = nr_clks;
+ of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data->clk_data);
+ return clk_data;
+err_data:
+ kfree(clk_data);
+err:
+ return NULL;
}
void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *clks,
- int nums, void __iomem *base)
+ int nums, struct hisi_clock_data *data)
{
struct clk *clk;
int i;
@@ -68,11 +94,13 @@ void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *clks,
__func__, clks[i].name);
continue;
}
+ data->clk_data.clks[clks[i].id] = clk;
}
}
void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *clks,
- int nums, void __iomem *base)
+ int nums,
+ struct hisi_clock_data *data)
{
struct clk *clk;
int i;
@@ -87,13 +115,15 @@ void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *clks,
__func__, clks[i].name);
continue;
}
+ data->clk_data.clks[clks[i].id] = clk;
}
}
void __init hisi_clk_register_mux(struct hisi_mux_clock *clks,
- int nums, void __iomem *base)
+ int nums, struct hisi_clock_data *data)
{
struct clk *clk;
+ void __iomem *base = data->base;
int i;
for (i = 0; i < nums; i++) {
@@ -111,14 +141,15 @@ void __init hisi_clk_register_mux(struct hisi_mux_clock *clks,
if (clks[i].alias)
clk_register_clkdev(clk, clks[i].alias, NULL);
- clk_table[clks[i].id] = clk;
+ data->clk_data.clks[clks[i].id] = clk;
}
}
void __init hisi_clk_register_divider(struct hisi_divider_clock *clks,
- int nums, void __iomem *base)
+ int nums, struct hisi_clock_data *data)
{
struct clk *clk;
+ void __iomem *base = data->base;
int i;
for (i = 0; i < nums; i++) {
@@ -139,14 +170,15 @@ void __init hisi_clk_register_divider(struct hisi_divider_clock *clks,
if (clks[i].alias)
clk_register_clkdev(clk, clks[i].alias, NULL);
- clk_table[clks[i].id] = clk;
+ data->clk_data.clks[clks[i].id] = clk;
}
}
void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks,
- int nums, void __iomem *base)
+ int nums, struct hisi_clock_data *data)
{
struct clk *clk;
+ void __iomem *base = data->base;
int i;
for (i = 0; i < nums; i++) {
@@ -166,6 +198,6 @@ void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks,
if (clks[i].alias)
clk_register_clkdev(clk, clks[i].alias, NULL);
- clk_table[clks[i].id] = clk;
+ data->clk_data.clks[clks[i].id] = clk;
}
}
diff --git a/drivers/clk/hisilicon/clk.h b/drivers/clk/hisilicon/clk.h
index 4a6beebefb7a..43fa5da88f02 100644
--- a/drivers/clk/hisilicon/clk.h
+++ b/drivers/clk/hisilicon/clk.h
@@ -30,6 +30,11 @@
#include <linux/io.h>
#include <linux/spinlock.h>
+struct hisi_clock_data {
+ struct clk_onecell_data clk_data;
+ void __iomem *base;
+};
+
struct hisi_fixed_rate_clock {
unsigned int id;
char *name;
@@ -89,15 +94,15 @@ struct clk *hisi_register_clkgate_sep(struct device *, const char *,
void __iomem *, u8,
u8, spinlock_t *);
-void __init hisi_clk_init(struct device_node *, int);
+struct hisi_clock_data __init *hisi_clk_init(struct device_node *, int);
void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *,
- int, void __iomem *);
+ int, struct hisi_clock_data *);
void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *,
- int, void __iomem *);
+ int, struct hisi_clock_data *);
void __init hisi_clk_register_mux(struct hisi_mux_clock *, int,
- void __iomem *);
+ struct hisi_clock_data *);
void __init hisi_clk_register_divider(struct hisi_divider_clock *,
- int, void __iomem *);
+ int, struct hisi_clock_data *);
void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *,
- int, void __iomem *);
+ int, struct hisi_clock_data *);
#endif /* __HISI_CLK_H */
diff --git a/drivers/clk/keystone/gate.c b/drivers/clk/keystone/gate.c
index 17a598398a53..86f1e362eafb 100644
--- a/drivers/clk/keystone/gate.c
+++ b/drivers/clk/keystone/gate.c
@@ -179,6 +179,7 @@ static struct clk *clk_register_psc(struct device *dev,
init.name = name;
init.ops = &clk_psc_ops;
+ init.flags = 0;
init.parent_names = (parent_name ? &parent_name : NULL);
init.num_parents = (parent_name ? 1 : 0);
diff --git a/drivers/clk/mmp/clk-frac.c b/drivers/clk/mmp/clk-frac.c
index 80c1dd15d15c..23a56f561812 100644
--- a/drivers/clk/mmp/clk-frac.c
+++ b/drivers/clk/mmp/clk-frac.c
@@ -40,15 +40,19 @@ static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate,
for (i = 0; i < factor->ftbl_cnt; i++) {
prev_rate = rate;
- rate = (((*prate / 10000) * factor->ftbl[i].num) /
- (factor->ftbl[i].den * factor->masks->factor)) * 10000;
+ rate = (((*prate / 10000) * factor->ftbl[i].den) /
+ (factor->ftbl[i].num * factor->masks->factor)) * 10000;
if (rate > drate)
break;
}
- if (i == 0)
+ if ((i == 0) || (i == factor->ftbl_cnt)) {
return rate;
- else
- return prev_rate;
+ } else {
+ if ((drate - prev_rate) > (rate - drate))
+ return rate;
+ else
+ return prev_rate;
+ }
}
static unsigned long clk_factor_recalc_rate(struct clk_hw *hw,
@@ -64,7 +68,7 @@ static unsigned long clk_factor_recalc_rate(struct clk_hw *hw,
num = (val >> masks->num_shift) & masks->num_mask;
/* calculate denominator */
- den = (val >> masks->den_shift) & masks->num_mask;
+ den = (val >> masks->den_shift) & masks->den_mask;
if (!den)
return 0;
@@ -85,8 +89,8 @@ static int clk_factor_set_rate(struct clk_hw *hw, unsigned long drate,
for (i = 0; i < factor->ftbl_cnt; i++) {
prev_rate = rate;
- rate = (((prate / 10000) * factor->ftbl[i].num) /
- (factor->ftbl[i].den * factor->masks->factor)) * 10000;
+ rate = (((prate / 10000) * factor->ftbl[i].den) /
+ (factor->ftbl[i].num * factor->masks->factor)) * 10000;
if (rate > drate)
break;
}
diff --git a/drivers/clk/mvebu/Kconfig b/drivers/clk/mvebu/Kconfig
index c339b829d3e3..693f7be129f1 100644
--- a/drivers/clk/mvebu/Kconfig
+++ b/drivers/clk/mvebu/Kconfig
@@ -13,6 +13,14 @@ config ARMADA_370_CLK
select MVEBU_CLK_CPU
select MVEBU_CLK_COREDIV
+config ARMADA_375_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ARMADA_38X_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
config ARMADA_XP_CLK
bool
select MVEBU_CLK_COMMON
diff --git a/drivers/clk/mvebu/Makefile b/drivers/clk/mvebu/Makefile
index 21bbfb4a9f42..4c66162fb0b4 100644
--- a/drivers/clk/mvebu/Makefile
+++ b/drivers/clk/mvebu/Makefile
@@ -3,6 +3,8 @@ obj-$(CONFIG_MVEBU_CLK_CPU) += clk-cpu.o
obj-$(CONFIG_MVEBU_CLK_COREDIV) += clk-corediv.o
obj-$(CONFIG_ARMADA_370_CLK) += armada-370.o
+obj-$(CONFIG_ARMADA_375_CLK) += armada-375.o
+obj-$(CONFIG_ARMADA_38X_CLK) += armada-38x.o
obj-$(CONFIG_ARMADA_XP_CLK) += armada-xp.o
obj-$(CONFIG_DOVE_CLK) += dove.o
obj-$(CONFIG_KIRKWOOD_CLK) += kirkwood.o
diff --git a/drivers/clk/mvebu/armada-370.c b/drivers/clk/mvebu/armada-370.c
index 81a202d12a7a..bef198a83863 100644
--- a/drivers/clk/mvebu/armada-370.c
+++ b/drivers/clk/mvebu/armada-370.c
@@ -141,13 +141,6 @@ static const struct coreclk_soc_desc a370_coreclks = {
.num_ratios = ARRAY_SIZE(a370_coreclk_ratios),
};
-static void __init a370_coreclk_init(struct device_node *np)
-{
- mvebu_coreclk_setup(np, &a370_coreclks);
-}
-CLK_OF_DECLARE(a370_core_clk, "marvell,armada-370-core-clock",
- a370_coreclk_init);
-
/*
* Clock Gating Control
*/
@@ -168,9 +161,15 @@ static const struct clk_gating_soc_desc a370_gating_desc[] __initconst = {
{ }
};
-static void __init a370_clk_gating_init(struct device_node *np)
+static void __init a370_clk_init(struct device_node *np)
{
- mvebu_clk_gating_setup(np, a370_gating_desc);
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,armada-370-gating-clock");
+
+ mvebu_coreclk_setup(np, &a370_coreclks);
+
+ if (cgnp)
+ mvebu_clk_gating_setup(cgnp, a370_gating_desc);
}
-CLK_OF_DECLARE(a370_clk_gating, "marvell,armada-370-gating-clock",
- a370_clk_gating_init);
+CLK_OF_DECLARE(a370_clk, "marvell,armada-370-core-clock", a370_clk_init);
+
diff --git a/drivers/clk/mvebu/armada-375.c b/drivers/clk/mvebu/armada-375.c
new file mode 100644
index 000000000000..c991a4d95e10
--- /dev/null
+++ b/drivers/clk/mvebu/armada-375.c
@@ -0,0 +1,184 @@
+/*
+ * Marvell Armada 375 SoC clocks
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+/*
+ * For the Armada 375 SoCs, the CPU, DDR and L2 clocks frequencies are
+ * all modified at the same time, and not separately as for the Armada
+ * 370 or the Armada XP SoCs.
+ *
+ * SAR0[21:17] : CPU frequency DDR frequency L2 frequency
+ * 6 = 400 MHz 400 MHz 200 MHz
+ * 15 = 600 MHz 600 MHz 300 MHz
+ * 21 = 800 MHz 534 MHz 400 MHz
+ * 25 = 1000 MHz 500 MHz 500 MHz
+ * others reserved.
+ *
+ * SAR0[22] : TCLK frequency
+ * 0 = 166 MHz
+ * 1 = 200 MHz
+ */
+
+#define SAR1_A375_TCLK_FREQ_OPT 22
+#define SAR1_A375_TCLK_FREQ_OPT_MASK 0x1
+#define SAR1_A375_CPU_DDR_L2_FREQ_OPT 17
+#define SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+
+static const u32 armada_375_tclk_frequencies[] __initconst = {
+ 166000000,
+ 200000000,
+};
+
+static u32 __init armada_375_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar) >> SAR1_A375_TCLK_FREQ_OPT) &
+ SAR1_A375_TCLK_FREQ_OPT_MASK);
+ return armada_375_tclk_frequencies[tclk_freq_select];
+}
+
+
+static const u32 armada_375_cpu_frequencies[] __initconst = {
+ 0, 0, 0, 0, 0, 0,
+ 400000000,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 600000000,
+ 0, 0, 0, 0, 0,
+ 800000000,
+ 0, 0, 0,
+ 1000000000,
+};
+
+static u32 __init armada_375_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
+ SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_375_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ } else
+ return armada_375_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A375_CPU_TO_DDR, A375_CPU_TO_L2 };
+
+static const struct coreclk_ratio armada_375_coreclk_ratios[] __initconst = {
+ { .id = A375_CPU_TO_L2, .name = "l2clk" },
+ { .id = A375_CPU_TO_DDR, .name = "ddrclk" },
+};
+
+static const int armada_375_cpu_l2_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {1, 2}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 2},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int armada_375_cpu_ddr_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {1, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {2, 3},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {2, 3}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init armada_375_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
+ SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A375_CPU_TO_L2:
+ *mult = armada_375_cpu_l2_ratios[opt][0];
+ *div = armada_375_cpu_l2_ratios[opt][1];
+ break;
+ case A375_CPU_TO_DDR:
+ *mult = armada_375_cpu_ddr_ratios[opt][0];
+ *div = armada_375_cpu_ddr_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc armada_375_coreclks = {
+ .get_tclk_freq = armada_375_get_tclk_freq,
+ .get_cpu_freq = armada_375_get_cpu_freq,
+ .get_clk_ratio = armada_375_get_clk_ratio,
+ .ratios = armada_375_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_375_coreclk_ratios),
+};
+
+static void __init armada_375_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_375_coreclks);
+}
+CLK_OF_DECLARE(armada_375_core_clk, "marvell,armada-375-core-clock",
+ armada_375_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_375_gating_desc[] __initconst = {
+ { "mu", NULL, 2 },
+ { "pp", NULL, 3 },
+ { "ptp", NULL, 4 },
+ { "pex0", NULL, 5 },
+ { "pex1", NULL, 6 },
+ { "audio", NULL, 8 },
+ { "nd_clk", "nand", 11 },
+ { "sata0_link", "sata0_core", 14 },
+ { "sata0_core", NULL, 15 },
+ { "usb3", NULL, 16 },
+ { "sdio", NULL, 17 },
+ { "usb", NULL, 18 },
+ { "gop", NULL, 19 },
+ { "sata1_link", "sata1_core", 20 },
+ { "sata1_core", NULL, 21 },
+ { "xor0", NULL, 22 },
+ { "xor1", NULL, 23 },
+ { "copro", NULL, 24 },
+ { "tdm", NULL, 25 },
+ { "crypto0_enc", NULL, 28 },
+ { "crypto0_core", NULL, 29 },
+ { "crypto1_enc", NULL, 30 },
+ { "crypto1_core", NULL, 31 },
+ { }
+};
+
+static void __init armada_375_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_375_gating_desc);
+}
+CLK_OF_DECLARE(armada_375_clk_gating, "marvell,armada-375-gating-clock",
+ armada_375_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-38x.c b/drivers/clk/mvebu/armada-38x.c
new file mode 100644
index 000000000000..8bccf4ecdab6
--- /dev/null
+++ b/drivers/clk/mvebu/armada-38x.c
@@ -0,0 +1,167 @@
+/*
+ * Marvell Armada 380/385 SoC clocks
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * SAR[14:10] : Ratios between PCLK0, NBCLK, HCLK and DRAM clocks
+ *
+ * SAR[15] : TCLK frequency
+ * 0 = 250 MHz
+ * 1 = 200 MHz
+ */
+
+#define SAR_A380_TCLK_FREQ_OPT 15
+#define SAR_A380_TCLK_FREQ_OPT_MASK 0x1
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT 10
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+
+static const u32 armada_38x_tclk_frequencies[] __initconst = {
+ 250000000,
+ 200000000,
+};
+
+static u32 __init armada_38x_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar) >> SAR_A380_TCLK_FREQ_OPT) &
+ SAR_A380_TCLK_FREQ_OPT_MASK);
+ return armada_38x_tclk_frequencies[tclk_freq_select];
+}
+
+static const u32 armada_38x_cpu_frequencies[] __initconst = {
+ 0, 0, 0, 0,
+ 1066 * 1000 * 1000, 0, 0, 0,
+ 1332 * 1000 * 1000, 0, 0, 0,
+ 1600 * 1000 * 1000,
+};
+
+static u32 __init armada_38x_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_38x_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ }
+
+ return armada_38x_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A380_CPU_TO_DDR, A380_CPU_TO_L2 };
+
+static const struct coreclk_ratio armada_38x_coreclk_ratios[] __initconst = {
+ { .id = A380_CPU_TO_L2, .name = "l2clk" },
+ { .id = A380_CPU_TO_DDR, .name = "ddrclk" },
+};
+
+static const int armada_38x_cpu_l2_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int armada_38x_cpu_ddr_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init armada_38x_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A380_CPU_TO_L2:
+ *mult = armada_38x_cpu_l2_ratios[opt][0];
+ *div = armada_38x_cpu_l2_ratios[opt][1];
+ break;
+ case A380_CPU_TO_DDR:
+ *mult = armada_38x_cpu_ddr_ratios[opt][0];
+ *div = armada_38x_cpu_ddr_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc armada_38x_coreclks = {
+ .get_tclk_freq = armada_38x_get_tclk_freq,
+ .get_cpu_freq = armada_38x_get_cpu_freq,
+ .get_clk_ratio = armada_38x_get_clk_ratio,
+ .ratios = armada_38x_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_38x_coreclk_ratios),
+};
+
+static void __init armada_38x_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_38x_coreclks);
+}
+CLK_OF_DECLARE(armada_38x_core_clk, "marvell,armada-380-core-clock",
+ armada_38x_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_38x_gating_desc[] __initconst = {
+ { "audio", NULL, 0 },
+ { "ge2", NULL, 2 },
+ { "ge1", NULL, 3 },
+ { "ge0", NULL, 4 },
+ { "pex1", NULL, 5 },
+ { "pex2", NULL, 6 },
+ { "pex3", NULL, 7 },
+ { "pex0", NULL, 8 },
+ { "usb3h0", NULL, 9 },
+ { "usb3h1", NULL, 10 },
+ { "usb3d", NULL, 11 },
+ { "bm", NULL, 13 },
+ { "crypto0z", NULL, 14 },
+ { "sata0", NULL, 15 },
+ { "crypto1z", NULL, 16 },
+ { "sdio", NULL, 17 },
+ { "usb2", NULL, 18 },
+ { "crypto1", NULL, 21 },
+ { "xor0", NULL, 22 },
+ { "crypto0", NULL, 23 },
+ { "tdm", NULL, 25 },
+ { "xor1", NULL, 28 },
+ { "sata1", NULL, 30 },
+ { }
+};
+
+static void __init armada_38x_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_38x_gating_desc);
+}
+CLK_OF_DECLARE(armada_38x_clk_gating, "marvell,armada-380-gating-clock",
+ armada_38x_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-xp.c b/drivers/clk/mvebu/armada-xp.c
index 9922c4475aa8..b3094315a3c0 100644
--- a/drivers/clk/mvebu/armada-xp.c
+++ b/drivers/clk/mvebu/armada-xp.c
@@ -158,13 +158,6 @@ static const struct coreclk_soc_desc axp_coreclks = {
.num_ratios = ARRAY_SIZE(axp_coreclk_ratios),
};
-static void __init axp_coreclk_init(struct device_node *np)
-{
- mvebu_coreclk_setup(np, &axp_coreclks);
-}
-CLK_OF_DECLARE(axp_core_clk, "marvell,armada-xp-core-clock",
- axp_coreclk_init);
-
/*
* Clock Gating Control
*/
@@ -202,9 +195,14 @@ static const struct clk_gating_soc_desc axp_gating_desc[] __initconst = {
{ }
};
-static void __init axp_clk_gating_init(struct device_node *np)
+static void __init axp_clk_init(struct device_node *np)
{
- mvebu_clk_gating_setup(np, axp_gating_desc);
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,armada-xp-gating-clock");
+
+ mvebu_coreclk_setup(np, &axp_coreclks);
+
+ if (cgnp)
+ mvebu_clk_gating_setup(cgnp, axp_gating_desc);
}
-CLK_OF_DECLARE(axp_clk_gating, "marvell,armada-xp-gating-clock",
- axp_clk_gating_init);
+CLK_OF_DECLARE(axp_clk, "marvell,armada-xp-core-clock", axp_clk_init);
diff --git a/drivers/clk/mvebu/clk-corediv.c b/drivers/clk/mvebu/clk-corediv.c
index 7162615bcdcd..d1e5863d3375 100644
--- a/drivers/clk/mvebu/clk-corediv.c
+++ b/drivers/clk/mvebu/clk-corediv.c
@@ -18,26 +18,56 @@
#include "common.h"
#define CORE_CLK_DIV_RATIO_MASK 0xff
-#define CORE_CLK_DIV_RATIO_RELOAD BIT(8)
-#define CORE_CLK_DIV_ENABLE_OFFSET 24
-#define CORE_CLK_DIV_RATIO_OFFSET 0x8
+/*
+ * This structure describes the hardware details (bit offset and mask)
+ * to configure one particular core divider clock. Those hardware
+ * details may differ from one SoC to another. This structure is
+ * therefore typically instantiated statically to describe the
+ * hardware details.
+ */
struct clk_corediv_desc {
unsigned int mask;
unsigned int offset;
unsigned int fieldbit;
};
+/*
+ * This structure describes the hardware details to configure the core
+ * divider clocks on a given SoC. Amongst others, it points to the
+ * array of core divider clock descriptors for this SoC, as well as
+ * the corresponding operations to manipulate them.
+ */
+struct clk_corediv_soc_desc {
+ const struct clk_corediv_desc *descs;
+ unsigned int ndescs;
+ const struct clk_ops ops;
+ u32 ratio_reload;
+ u32 enable_bit_offset;
+ u32 ratio_offset;
+};
+
+/*
+ * This structure represents one core divider clock for the clock
+ * framework, and is dynamically allocated for each core divider clock
+ * existing in the current SoC.
+ */
struct clk_corediv {
struct clk_hw hw;
void __iomem *reg;
- struct clk_corediv_desc desc;
+ const struct clk_corediv_desc *desc;
+ const struct clk_corediv_soc_desc *soc_desc;
spinlock_t lock;
};
static struct clk_onecell_data clk_data;
-static const struct clk_corediv_desc mvebu_corediv_desc[] __initconst = {
+/*
+ * Description of the core divider clocks available. For now, we
+ * support only NAND, and it is available at the same register
+ * locations regardless of the SoC.
+ */
+static const struct clk_corediv_desc mvebu_corediv_desc[] = {
{ .mask = 0x3f, .offset = 8, .fieldbit = 1 }, /* NAND clock */
};
@@ -46,8 +76,9 @@ static const struct clk_corediv_desc mvebu_corediv_desc[] __initconst = {
static int clk_corediv_is_enabled(struct clk_hw *hwclk)
{
struct clk_corediv *corediv = to_corediv_clk(hwclk);
- struct clk_corediv_desc *desc = &corediv->desc;
- u32 enable_mask = BIT(desc->fieldbit) << CORE_CLK_DIV_ENABLE_OFFSET;
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ u32 enable_mask = BIT(desc->fieldbit) << soc_desc->enable_bit_offset;
return !!(readl(corediv->reg) & enable_mask);
}
@@ -55,14 +86,15 @@ static int clk_corediv_is_enabled(struct clk_hw *hwclk)
static int clk_corediv_enable(struct clk_hw *hwclk)
{
struct clk_corediv *corediv = to_corediv_clk(hwclk);
- struct clk_corediv_desc *desc = &corediv->desc;
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
unsigned long flags = 0;
u32 reg;
spin_lock_irqsave(&corediv->lock, flags);
reg = readl(corediv->reg);
- reg |= (BIT(desc->fieldbit) << CORE_CLK_DIV_ENABLE_OFFSET);
+ reg |= (BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
writel(reg, corediv->reg);
spin_unlock_irqrestore(&corediv->lock, flags);
@@ -73,14 +105,15 @@ static int clk_corediv_enable(struct clk_hw *hwclk)
static void clk_corediv_disable(struct clk_hw *hwclk)
{
struct clk_corediv *corediv = to_corediv_clk(hwclk);
- struct clk_corediv_desc *desc = &corediv->desc;
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
unsigned long flags = 0;
u32 reg;
spin_lock_irqsave(&corediv->lock, flags);
reg = readl(corediv->reg);
- reg &= ~(BIT(desc->fieldbit) << CORE_CLK_DIV_ENABLE_OFFSET);
+ reg &= ~(BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
writel(reg, corediv->reg);
spin_unlock_irqrestore(&corediv->lock, flags);
@@ -90,10 +123,11 @@ static unsigned long clk_corediv_recalc_rate(struct clk_hw *hwclk,
unsigned long parent_rate)
{
struct clk_corediv *corediv = to_corediv_clk(hwclk);
- struct clk_corediv_desc *desc = &corediv->desc;
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
u32 reg, div;
- reg = readl(corediv->reg + CORE_CLK_DIV_RATIO_OFFSET);
+ reg = readl(corediv->reg + soc_desc->ratio_offset);
div = (reg >> desc->offset) & desc->mask;
return parent_rate / div;
}
@@ -117,7 +151,8 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
unsigned long parent_rate)
{
struct clk_corediv *corediv = to_corediv_clk(hwclk);
- struct clk_corediv_desc *desc = &corediv->desc;
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
unsigned long flags = 0;
u32 reg, div;
@@ -126,17 +161,17 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
spin_lock_irqsave(&corediv->lock, flags);
/* Write new divider to the divider ratio register */
- reg = readl(corediv->reg + CORE_CLK_DIV_RATIO_OFFSET);
+ reg = readl(corediv->reg + soc_desc->ratio_offset);
reg &= ~(desc->mask << desc->offset);
reg |= (div & desc->mask) << desc->offset;
- writel(reg, corediv->reg + CORE_CLK_DIV_RATIO_OFFSET);
+ writel(reg, corediv->reg + soc_desc->ratio_offset);
/* Set reload-force for this clock */
reg = readl(corediv->reg) | BIT(desc->fieldbit);
writel(reg, corediv->reg);
/* Now trigger the clock update */
- reg = readl(corediv->reg) | CORE_CLK_DIV_RATIO_RELOAD;
+ reg = readl(corediv->reg) | soc_desc->ratio_reload;
writel(reg, corediv->reg);
/*
@@ -144,7 +179,7 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
* ratios request and the reload request.
*/
udelay(1000);
- reg &= ~(CORE_CLK_DIV_RATIO_MASK | CORE_CLK_DIV_RATIO_RELOAD);
+ reg &= ~(CORE_CLK_DIV_RATIO_MASK | soc_desc->ratio_reload);
writel(reg, corediv->reg);
udelay(1000);
@@ -153,16 +188,53 @@ static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
return 0;
}
-static const struct clk_ops corediv_ops = {
- .enable = clk_corediv_enable,
- .disable = clk_corediv_disable,
- .is_enabled = clk_corediv_is_enabled,
- .recalc_rate = clk_corediv_recalc_rate,
- .round_rate = clk_corediv_round_rate,
- .set_rate = clk_corediv_set_rate,
+static const struct clk_corediv_soc_desc armada370_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .enable = clk_corediv_enable,
+ .disable = clk_corediv_disable,
+ .is_enabled = clk_corediv_is_enabled,
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .enable_bit_offset = 24,
+ .ratio_offset = 0x8,
+};
+
+static const struct clk_corediv_soc_desc armada380_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .enable = clk_corediv_enable,
+ .disable = clk_corediv_disable,
+ .is_enabled = clk_corediv_is_enabled,
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .enable_bit_offset = 16,
+ .ratio_offset = 0x4,
};
-static void __init mvebu_corediv_clk_init(struct device_node *node)
+static const struct clk_corediv_soc_desc armada375_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .ratio_offset = 0x4,
+};
+
+static void __init
+mvebu_corediv_clk_init(struct device_node *node,
+ const struct clk_corediv_soc_desc *soc_desc)
{
struct clk_init_data init;
struct clk_corediv *corediv;
@@ -178,7 +250,7 @@ static void __init mvebu_corediv_clk_init(struct device_node *node)
parent_name = of_clk_get_parent_name(node, 0);
- clk_data.clk_num = ARRAY_SIZE(mvebu_corediv_desc);
+ clk_data.clk_num = soc_desc->ndescs;
/* clks holds the clock array */
clks = kcalloc(clk_data.clk_num, sizeof(struct clk *),
@@ -199,10 +271,11 @@ static void __init mvebu_corediv_clk_init(struct device_node *node)
init.num_parents = 1;
init.parent_names = &parent_name;
init.name = clk_name;
- init.ops = &corediv_ops;
+ init.ops = &soc_desc->ops;
init.flags = 0;
- corediv[i].desc = mvebu_corediv_desc[i];
+ corediv[i].soc_desc = soc_desc;
+ corediv[i].desc = soc_desc->descs + i;
corediv[i].reg = base;
corediv[i].hw.init = &init;
@@ -219,5 +292,24 @@ err_free_clks:
err_unmap:
iounmap(base);
}
-CLK_OF_DECLARE(mvebu_corediv_clk, "marvell,armada-370-corediv-clock",
- mvebu_corediv_clk_init);
+
+static void __init armada370_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada370_corediv_soc);
+}
+CLK_OF_DECLARE(armada370_corediv_clk, "marvell,armada-370-corediv-clock",
+ armada370_corediv_clk_init);
+
+static void __init armada375_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada375_corediv_soc);
+}
+CLK_OF_DECLARE(armada375_corediv_clk, "marvell,armada-375-corediv-clock",
+ armada375_corediv_clk_init);
+
+static void __init armada380_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada380_corediv_soc);
+}
+CLK_OF_DECLARE(armada380_corediv_clk, "marvell,armada-380-corediv-clock",
+ armada380_corediv_clk_init);
diff --git a/drivers/clk/mvebu/dove.c b/drivers/clk/mvebu/dove.c
index 38aee1e3f242..b8c2424ac926 100644
--- a/drivers/clk/mvebu/dove.c
+++ b/drivers/clk/mvebu/dove.c
@@ -154,12 +154,6 @@ static const struct coreclk_soc_desc dove_coreclks = {
.num_ratios = ARRAY_SIZE(dove_coreclk_ratios),
};
-static void __init dove_coreclk_init(struct device_node *np)
-{
- mvebu_coreclk_setup(np, &dove_coreclks);
-}
-CLK_OF_DECLARE(dove_core_clk, "marvell,dove-core-clock", dove_coreclk_init);
-
/*
* Clock Gating Control
*/
@@ -186,9 +180,14 @@ static const struct clk_gating_soc_desc dove_gating_desc[] __initconst = {
{ }
};
-static void __init dove_clk_gating_init(struct device_node *np)
+static void __init dove_clk_init(struct device_node *np)
{
- mvebu_clk_gating_setup(np, dove_gating_desc);
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,dove-gating-clock");
+
+ mvebu_coreclk_setup(np, &dove_coreclks);
+
+ if (cgnp)
+ mvebu_clk_gating_setup(cgnp, dove_gating_desc);
}
-CLK_OF_DECLARE(dove_clk_gating, "marvell,dove-gating-clock",
- dove_clk_gating_init);
+CLK_OF_DECLARE(dove_clk, "marvell,dove-core-clock", dove_clk_init);
diff --git a/drivers/clk/mvebu/kirkwood.c b/drivers/clk/mvebu/kirkwood.c
index 2636a55f29f9..ddb666a86500 100644
--- a/drivers/clk/mvebu/kirkwood.c
+++ b/drivers/clk/mvebu/kirkwood.c
@@ -193,13 +193,6 @@ static const struct coreclk_soc_desc kirkwood_coreclks = {
.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
};
-static void __init kirkwood_coreclk_init(struct device_node *np)
-{
- mvebu_coreclk_setup(np, &kirkwood_coreclks);
-}
-CLK_OF_DECLARE(kirkwood_core_clk, "marvell,kirkwood-core-clock",
- kirkwood_coreclk_init);
-
static const struct coreclk_soc_desc mv88f6180_coreclks = {
.get_tclk_freq = kirkwood_get_tclk_freq,
.get_cpu_freq = mv88f6180_get_cpu_freq,
@@ -208,13 +201,6 @@ static const struct coreclk_soc_desc mv88f6180_coreclks = {
.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
};
-static void __init mv88f6180_coreclk_init(struct device_node *np)
-{
- mvebu_coreclk_setup(np, &mv88f6180_coreclks);
-}
-CLK_OF_DECLARE(mv88f6180_core_clk, "marvell,mv88f6180-core-clock",
- mv88f6180_coreclk_init);
-
/*
* Clock Gating Control
*/
@@ -239,9 +225,21 @@ static const struct clk_gating_soc_desc kirkwood_gating_desc[] __initconst = {
{ }
};
-static void __init kirkwood_clk_gating_init(struct device_node *np)
+static void __init kirkwood_clk_init(struct device_node *np)
{
- mvebu_clk_gating_setup(np, kirkwood_gating_desc);
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,kirkwood-gating-clock");
+
+
+ if (of_device_is_compatible(np, "marvell,mv88f6180-core-clock"))
+ mvebu_coreclk_setup(np, &mv88f6180_coreclks);
+ else
+ mvebu_coreclk_setup(np, &kirkwood_coreclks);
+
+ if (cgnp)
+ mvebu_clk_gating_setup(cgnp, kirkwood_gating_desc);
}
-CLK_OF_DECLARE(kirkwood_clk_gating, "marvell,kirkwood-gating-clock",
- kirkwood_clk_gating_init);
+CLK_OF_DECLARE(kirkwood_clk, "marvell,kirkwood-core-clock",
+ kirkwood_clk_init);
+CLK_OF_DECLARE(mv88f6180_clk, "marvell,mv88f6180-core-clock",
+ kirkwood_clk_init);
diff --git a/drivers/clk/samsung/clk-exynos-audss.c b/drivers/clk/samsung/clk-exynos-audss.c
index 884187fbfe00..13eae14c2cc2 100644
--- a/drivers/clk/samsung/clk-exynos-audss.c
+++ b/drivers/clk/samsung/clk-exynos-audss.c
@@ -17,7 +17,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
-#include <dt-bindings/clk/exynos-audss-clk.h>
+#include <dt-bindings/clock/exynos-audss-clk.h>
enum exynos_audss_clk_type {
TYPE_EXYNOS4210,
diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
index 010f071af883..b4f967210175 100644
--- a/drivers/clk/samsung/clk-exynos4.c
+++ b/drivers/clk/samsung/clk-exynos4.c
@@ -16,6 +16,7 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
#include "clk.h"
@@ -130,6 +131,17 @@ enum exynos4_plls {
nr_plls /* number of PLLs */
};
+static void __iomem *reg_base;
+static enum exynos4_soc exynos4_soc;
+
+/*
+ * Support for CMU save/restore across system suspends
+ */
+#ifdef CONFIG_PM_SLEEP
+static struct samsung_clk_reg_dump *exynos4_save_common;
+static struct samsung_clk_reg_dump *exynos4_save_soc;
+static struct samsung_clk_reg_dump *exynos4_save_pll;
+
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
@@ -154,6 +166,17 @@ static unsigned long exynos4x12_clk_save[] __initdata = {
E4X12_MPLL_CON0,
};
+static unsigned long exynos4_clk_pll_regs[] __initdata = {
+ EPLL_LOCK,
+ VPLL_LOCK,
+ EPLL_CON0,
+ EPLL_CON1,
+ EPLL_CON2,
+ VPLL_CON0,
+ VPLL_CON1,
+ VPLL_CON2,
+};
+
static unsigned long exynos4_clk_regs[] __initdata = {
SRC_LEFTBUS,
DIV_LEFTBUS,
@@ -161,12 +184,6 @@ static unsigned long exynos4_clk_regs[] __initdata = {
SRC_RIGHTBUS,
DIV_RIGHTBUS,
GATE_IP_RIGHTBUS,
- EPLL_CON0,
- EPLL_CON1,
- EPLL_CON2,
- VPLL_CON0,
- VPLL_CON1,
- VPLL_CON2,
SRC_TOP0,
SRC_TOP1,
SRC_CAM,
@@ -227,6 +244,124 @@ static unsigned long exynos4_clk_regs[] __initdata = {
GATE_IP_CPU,
};
+static const struct samsung_clk_reg_dump src_mask_suspend[] = {
+ { .offset = SRC_MASK_TOP, .value = 0x00000001, },
+ { .offset = SRC_MASK_CAM, .value = 0x11111111, },
+ { .offset = SRC_MASK_TV, .value = 0x00000111, },
+ { .offset = SRC_MASK_LCD0, .value = 0x00001111, },
+ { .offset = SRC_MASK_MAUDIO, .value = 0x00000001, },
+ { .offset = SRC_MASK_FSYS, .value = 0x01011111, },
+ { .offset = SRC_MASK_PERIL0, .value = 0x01111111, },
+ { .offset = SRC_MASK_PERIL1, .value = 0x01110111, },
+ { .offset = SRC_MASK_DMC, .value = 0x00010000, },
+};
+
+static const struct samsung_clk_reg_dump src_mask_suspend_e4210[] = {
+ { .offset = E4210_SRC_MASK_LCD1, .value = 0x00001111, },
+};
+
+#define PLL_ENABLED (1 << 31)
+#define PLL_LOCKED (1 << 29)
+
+static void exynos4_clk_wait_for_pll(u32 reg)
+{
+ u32 pll_con;
+
+ pll_con = readl(reg_base + reg);
+ if (!(pll_con & PLL_ENABLED))
+ return;
+
+ while (!(pll_con & PLL_LOCKED)) {
+ cpu_relax();
+ pll_con = readl(reg_base + reg);
+ }
+}
+
+static int exynos4_clk_suspend(void)
+{
+ samsung_clk_save(reg_base, exynos4_save_common,
+ ARRAY_SIZE(exynos4_clk_regs));
+ samsung_clk_save(reg_base, exynos4_save_pll,
+ ARRAY_SIZE(exynos4_clk_pll_regs));
+
+ if (exynos4_soc == EXYNOS4210) {
+ samsung_clk_save(reg_base, exynos4_save_soc,
+ ARRAY_SIZE(exynos4210_clk_save));
+ samsung_clk_restore(reg_base, src_mask_suspend_e4210,
+ ARRAY_SIZE(src_mask_suspend_e4210));
+ } else {
+ samsung_clk_save(reg_base, exynos4_save_soc,
+ ARRAY_SIZE(exynos4x12_clk_save));
+ }
+
+ samsung_clk_restore(reg_base, src_mask_suspend,
+ ARRAY_SIZE(src_mask_suspend));
+
+ return 0;
+}
+
+static void exynos4_clk_resume(void)
+{
+ samsung_clk_restore(reg_base, exynos4_save_pll,
+ ARRAY_SIZE(exynos4_clk_pll_regs));
+
+ exynos4_clk_wait_for_pll(EPLL_CON0);
+ exynos4_clk_wait_for_pll(VPLL_CON0);
+
+ samsung_clk_restore(reg_base, exynos4_save_common,
+ ARRAY_SIZE(exynos4_clk_regs));
+
+ if (exynos4_soc == EXYNOS4210)
+ samsung_clk_restore(reg_base, exynos4_save_soc,
+ ARRAY_SIZE(exynos4210_clk_save));
+ else
+ samsung_clk_restore(reg_base, exynos4_save_soc,
+ ARRAY_SIZE(exynos4x12_clk_save));
+}
+
+static struct syscore_ops exynos4_clk_syscore_ops = {
+ .suspend = exynos4_clk_suspend,
+ .resume = exynos4_clk_resume,
+};
+
+static void exynos4_clk_sleep_init(void)
+{
+ exynos4_save_common = samsung_clk_alloc_reg_dump(exynos4_clk_regs,
+ ARRAY_SIZE(exynos4_clk_regs));
+ if (!exynos4_save_common)
+ goto err_warn;
+
+ if (exynos4_soc == EXYNOS4210)
+ exynos4_save_soc = samsung_clk_alloc_reg_dump(
+ exynos4210_clk_save,
+ ARRAY_SIZE(exynos4210_clk_save));
+ else
+ exynos4_save_soc = samsung_clk_alloc_reg_dump(
+ exynos4x12_clk_save,
+ ARRAY_SIZE(exynos4x12_clk_save));
+ if (!exynos4_save_soc)
+ goto err_common;
+
+ exynos4_save_pll = samsung_clk_alloc_reg_dump(exynos4_clk_pll_regs,
+ ARRAY_SIZE(exynos4_clk_pll_regs));
+ if (!exynos4_save_pll)
+ goto err_soc;
+
+ register_syscore_ops(&exynos4_clk_syscore_ops);
+ return;
+
+err_soc:
+ kfree(exynos4_save_soc);
+err_common:
+ kfree(exynos4_save_common);
+err_warn:
+ pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
+ __func__);
+}
+#else
+static void exynos4_clk_sleep_init(void) {}
+#endif
+
/* list of all parent clock list */
PNAME(mout_apll_p) = { "fin_pll", "fout_apll", };
PNAME(mout_mpll_p) = { "fin_pll", "fout_mpll", };
@@ -908,12 +1043,13 @@ static unsigned long exynos4_get_xom(void)
return xom;
}
-static void __init exynos4_clk_register_finpll(unsigned long xom)
+static void __init exynos4_clk_register_finpll(void)
{
struct samsung_fixed_rate_clock fclk;
struct clk *clk;
unsigned long finpll_f = 24000000;
char *parent_name;
+ unsigned int xom = exynos4_get_xom();
parent_name = xom & 1 ? "xusbxti" : "xxti";
clk = clk_get(NULL, parent_name);
@@ -1038,27 +1174,21 @@ static struct samsung_pll_clock exynos4x12_plls[nr_plls] __initdata = {
/* register exynos4 clocks */
static void __init exynos4_clk_init(struct device_node *np,
- enum exynos4_soc exynos4_soc,
- void __iomem *reg_base, unsigned long xom)
+ enum exynos4_soc soc)
{
+ exynos4_soc = soc;
+
reg_base = of_iomap(np, 0);
if (!reg_base)
panic("%s: failed to map registers\n", __func__);
- if (exynos4_soc == EXYNOS4210)
- samsung_clk_init(np, reg_base, CLK_NR_CLKS,
- exynos4_clk_regs, ARRAY_SIZE(exynos4_clk_regs),
- exynos4210_clk_save, ARRAY_SIZE(exynos4210_clk_save));
- else
- samsung_clk_init(np, reg_base, CLK_NR_CLKS,
- exynos4_clk_regs, ARRAY_SIZE(exynos4_clk_regs),
- exynos4x12_clk_save, ARRAY_SIZE(exynos4x12_clk_save));
+ samsung_clk_init(np, reg_base, CLK_NR_CLKS);
samsung_clk_of_register_fixed_ext(exynos4_fixed_rate_ext_clks,
ARRAY_SIZE(exynos4_fixed_rate_ext_clks),
ext_clk_match);
- exynos4_clk_register_finpll(xom);
+ exynos4_clk_register_finpll();
if (exynos4_soc == EXYNOS4210) {
samsung_clk_register_mux(exynos4210_mux_early,
@@ -1125,6 +1255,8 @@ static void __init exynos4_clk_init(struct device_node *np,
samsung_clk_register_alias(exynos4_aliases,
ARRAY_SIZE(exynos4_aliases));
+ exynos4_clk_sleep_init();
+
pr_info("%s clocks: sclk_apll = %ld, sclk_mpll = %ld\n"
"\tsclk_epll = %ld, sclk_vpll = %ld, arm_clk = %ld\n",
exynos4_soc == EXYNOS4210 ? "Exynos4210" : "Exynos4x12",
@@ -1136,12 +1268,12 @@ static void __init exynos4_clk_init(struct device_node *np,
static void __init exynos4210_clk_init(struct device_node *np)
{
- exynos4_clk_init(np, EXYNOS4210, NULL, exynos4_get_xom());
+ exynos4_clk_init(np, EXYNOS4210);
}
CLK_OF_DECLARE(exynos4210_clk, "samsung,exynos4210-clock", exynos4210_clk_init);
static void __init exynos4412_clk_init(struct device_node *np)
{
- exynos4_clk_init(np, EXYNOS4X12, NULL, exynos4_get_xom());
+ exynos4_clk_init(np, EXYNOS4X12);
}
CLK_OF_DECLARE(exynos4412_clk, "samsung,exynos4412-clock", exynos4412_clk_init);
diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
index ff4beebe1f0b..e7ee4420da81 100644
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -16,6 +16,7 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
#include "clk.h"
@@ -85,6 +86,11 @@ enum exynos5250_plls {
nr_plls /* number of PLLs */
};
+static void __iomem *reg_base;
+
+#ifdef CONFIG_PM_SLEEP
+static struct samsung_clk_reg_dump *exynos5250_save;
+
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
@@ -137,6 +143,41 @@ static unsigned long exynos5250_clk_regs[] __initdata = {
GATE_IP_ACP,
};
+static int exynos5250_clk_suspend(void)
+{
+ samsung_clk_save(reg_base, exynos5250_save,
+ ARRAY_SIZE(exynos5250_clk_regs));
+
+ return 0;
+}
+
+static void exynos5250_clk_resume(void)
+{
+ samsung_clk_restore(reg_base, exynos5250_save,
+ ARRAY_SIZE(exynos5250_clk_regs));
+}
+
+static struct syscore_ops exynos5250_clk_syscore_ops = {
+ .suspend = exynos5250_clk_suspend,
+ .resume = exynos5250_clk_resume,
+};
+
+static void exynos5250_clk_sleep_init(void)
+{
+ exynos5250_save = samsung_clk_alloc_reg_dump(exynos5250_clk_regs,
+ ARRAY_SIZE(exynos5250_clk_regs));
+ if (!exynos5250_save) {
+ pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
+ __func__);
+ return;
+ }
+
+ register_syscore_ops(&exynos5250_clk_syscore_ops);
+}
+#else
+static void exynos5250_clk_sleep_init(void) {}
+#endif
+
/* list of all parent clock list */
PNAME(mout_apll_p) = { "fin_pll", "fout_apll", };
PNAME(mout_cpu_p) = { "mout_apll", "mout_mpll", };
@@ -645,8 +686,6 @@ static struct of_device_id ext_clk_match[] __initdata = {
/* register exynox5250 clocks */
static void __init exynos5250_clk_init(struct device_node *np)
{
- void __iomem *reg_base;
-
if (np) {
reg_base = of_iomap(np, 0);
if (!reg_base)
@@ -655,9 +694,7 @@ static void __init exynos5250_clk_init(struct device_node *np)
panic("%s: unable to determine soc\n", __func__);
}
- samsung_clk_init(np, reg_base, CLK_NR_CLKS,
- exynos5250_clk_regs, ARRAY_SIZE(exynos5250_clk_regs),
- NULL, 0);
+ samsung_clk_init(np, reg_base, CLK_NR_CLKS);
samsung_clk_of_register_fixed_ext(exynos5250_fixed_rate_ext_clks,
ARRAY_SIZE(exynos5250_fixed_rate_ext_clks),
ext_clk_match);
@@ -685,6 +722,8 @@ static void __init exynos5250_clk_init(struct device_node *np)
samsung_clk_register_gate(exynos5250_gate_clks,
ARRAY_SIZE(exynos5250_gate_clks));
+ exynos5250_clk_sleep_init();
+
pr_info("Exynos5250: clock setup completed, armclk=%ld\n",
_get_rate("div_arm2"));
}
diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index ab4f2f7d88ef..60b26819bed5 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c
@@ -16,6 +16,7 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
#include "clk.h"
@@ -108,6 +109,11 @@ enum exynos5420_plls {
nr_plls /* number of PLLs */
};
+static void __iomem *reg_base;
+
+#ifdef CONFIG_PM_SLEEP
+static struct samsung_clk_reg_dump *exynos5420_save;
+
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
@@ -174,6 +180,41 @@ static unsigned long exynos5420_clk_regs[] __initdata = {
DIV_KFC0,
};
+static int exynos5420_clk_suspend(void)
+{
+ samsung_clk_save(reg_base, exynos5420_save,
+ ARRAY_SIZE(exynos5420_clk_regs));
+
+ return 0;
+}
+
+static void exynos5420_clk_resume(void)
+{
+ samsung_clk_restore(reg_base, exynos5420_save,
+ ARRAY_SIZE(exynos5420_clk_regs));
+}
+
+static struct syscore_ops exynos5420_clk_syscore_ops = {
+ .suspend = exynos5420_clk_suspend,
+ .resume = exynos5420_clk_resume,
+};
+
+static void exynos5420_clk_sleep_init(void)
+{
+ exynos5420_save = samsung_clk_alloc_reg_dump(exynos5420_clk_regs,
+ ARRAY_SIZE(exynos5420_clk_regs));
+ if (!exynos5420_save) {
+ pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
+ __func__);
+ return;
+ }
+
+ register_syscore_ops(&exynos5420_clk_syscore_ops);
+}
+#else
+static void exynos5420_clk_sleep_init(void) {}
+#endif
+
/* list of all parent clocks */
PNAME(mspll_cpu_p) = { "sclk_cpll", "sclk_dpll",
"sclk_mpll", "sclk_spll" };
@@ -737,8 +778,6 @@ static struct of_device_id ext_clk_match[] __initdata = {
/* register exynos5420 clocks */
static void __init exynos5420_clk_init(struct device_node *np)
{
- void __iomem *reg_base;
-
if (np) {
reg_base = of_iomap(np, 0);
if (!reg_base)
@@ -747,9 +786,7 @@ static void __init exynos5420_clk_init(struct device_node *np)
panic("%s: unable to determine soc\n", __func__);
}
- samsung_clk_init(np, reg_base, CLK_NR_CLKS,
- exynos5420_clk_regs, ARRAY_SIZE(exynos5420_clk_regs),
- NULL, 0);
+ samsung_clk_init(np, reg_base, CLK_NR_CLKS);
samsung_clk_of_register_fixed_ext(exynos5420_fixed_rate_ext_clks,
ARRAY_SIZE(exynos5420_fixed_rate_ext_clks),
ext_clk_match);
@@ -765,5 +802,7 @@ static void __init exynos5420_clk_init(struct device_node *np)
ARRAY_SIZE(exynos5420_div_clks));
samsung_clk_register_gate(exynos5420_gate_clks,
ARRAY_SIZE(exynos5420_gate_clks));
+
+ exynos5420_clk_sleep_init();
}
CLK_OF_DECLARE(exynos5420_clk, "samsung,exynos5420-clock", exynos5420_clk_init);
diff --git a/drivers/clk/samsung/clk-exynos5440.c b/drivers/clk/samsung/clk-exynos5440.c
index cbc15b56891d..2bfad5a993d0 100644
--- a/drivers/clk/samsung/clk-exynos5440.c
+++ b/drivers/clk/samsung/clk-exynos5440.c
@@ -101,7 +101,7 @@ static void __init exynos5440_clk_init(struct device_node *np)
return;
}
- samsung_clk_init(np, reg_base, CLK_NR_CLKS, NULL, 0, NULL, 0);
+ samsung_clk_init(np, reg_base, CLK_NR_CLKS);
samsung_clk_of_register_fixed_ext(exynos5440_fixed_rate_ext_clks,
ARRAY_SIZE(exynos5440_fixed_rate_ext_clks), ext_clk_match);
diff --git a/drivers/clk/samsung/clk-s3c64xx.c b/drivers/clk/samsung/clk-s3c64xx.c
index 8e27aee6887e..8bda658137a8 100644
--- a/drivers/clk/samsung/clk-s3c64xx.c
+++ b/drivers/clk/samsung/clk-s3c64xx.c
@@ -13,6 +13,7 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
#include <dt-bindings/clock/samsung,s3c64xx-clock.h>
@@ -61,6 +62,13 @@ enum s3c64xx_plls {
apll, mpll, epll,
};
+static void __iomem *reg_base;
+static bool is_s3c6400;
+
+#ifdef CONFIG_PM_SLEEP
+static struct samsung_clk_reg_dump *s3c64xx_save_common;
+static struct samsung_clk_reg_dump *s3c64xx_save_soc;
+
/*
* List of controller registers to be saved and restored during
* a suspend/resume cycle.
@@ -87,6 +95,60 @@ static unsigned long s3c6410_clk_regs[] __initdata = {
MEM0_GATE,
};
+static int s3c64xx_clk_suspend(void)
+{
+ samsung_clk_save(reg_base, s3c64xx_save_common,
+ ARRAY_SIZE(s3c64xx_clk_regs));
+
+ if (!is_s3c6400)
+ samsung_clk_save(reg_base, s3c64xx_save_soc,
+ ARRAY_SIZE(s3c6410_clk_regs));
+
+ return 0;
+}
+
+static void s3c64xx_clk_resume(void)
+{
+ samsung_clk_restore(reg_base, s3c64xx_save_common,
+ ARRAY_SIZE(s3c64xx_clk_regs));
+
+ if (!is_s3c6400)
+ samsung_clk_restore(reg_base, s3c64xx_save_soc,
+ ARRAY_SIZE(s3c6410_clk_regs));
+}
+
+static struct syscore_ops s3c64xx_clk_syscore_ops = {
+ .suspend = s3c64xx_clk_suspend,
+ .resume = s3c64xx_clk_resume,
+};
+
+static void s3c64xx_clk_sleep_init(void)
+{
+ s3c64xx_save_common = samsung_clk_alloc_reg_dump(s3c64xx_clk_regs,
+ ARRAY_SIZE(s3c64xx_clk_regs));
+ if (!s3c64xx_save_common)
+ goto err_warn;
+
+ if (!is_s3c6400) {
+ s3c64xx_save_soc = samsung_clk_alloc_reg_dump(s3c6410_clk_regs,
+ ARRAY_SIZE(s3c6410_clk_regs));
+ if (!s3c64xx_save_soc)
+ goto err_soc;
+ }
+
+ register_syscore_ops(&s3c64xx_clk_syscore_ops);
+ return;
+
+err_soc:
+ kfree(s3c64xx_save_common);
+err_warn:
+ pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
+ __func__);
+}
+#else
+static void s3c64xx_clk_sleep_init(void) {}
+#endif
+
/* List of parent clocks common for all S3C64xx SoCs. */
PNAME(spi_mmc_p) = { "mout_epll", "dout_mpll", "fin_pll", "clk27m" };
PNAME(uart_p) = { "mout_epll", "dout_mpll" };
@@ -391,11 +453,11 @@ static void __init s3c64xx_clk_register_fixed_ext(unsigned long fin_pll_f,
/* Register s3c64xx clocks. */
void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
- unsigned long xusbxti_f, bool is_s3c6400,
- void __iomem *reg_base)
+ unsigned long xusbxti_f, bool s3c6400,
+ void __iomem *base)
{
- unsigned long *soc_regs = NULL;
- unsigned long nr_soc_regs = 0;
+ reg_base = base;
+ is_s3c6400 = s3c6400;
if (np) {
reg_base = of_iomap(np, 0);
@@ -403,13 +465,7 @@ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
panic("%s: failed to map registers\n", __func__);
}
- if (!is_s3c6400) {
- soc_regs = s3c6410_clk_regs;
- nr_soc_regs = ARRAY_SIZE(s3c6410_clk_regs);
- }
-
- samsung_clk_init(np, reg_base, NR_CLKS, s3c64xx_clk_regs,
- ARRAY_SIZE(s3c64xx_clk_regs), soc_regs, nr_soc_regs);
+ samsung_clk_init(np, reg_base, NR_CLKS);
/* Register external clocks. */
if (!np)
@@ -452,6 +508,7 @@ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
samsung_clk_register_alias(s3c64xx_clock_aliases,
ARRAY_SIZE(s3c64xx_clock_aliases));
+ s3c64xx_clk_sleep_init();
pr_info("%s clocks: apll = %lu, mpll = %lu\n"
"\tepll = %lu, arm_clk = %lu\n",
diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c
index f503f32e2f80..91bec3ebdc8f 100644
--- a/drivers/clk/samsung/clk.c
+++ b/drivers/clk/samsung/clk.c
@@ -21,64 +21,45 @@ static void __iomem *reg_base;
static struct clk_onecell_data clk_data;
#endif
-#ifdef CONFIG_PM_SLEEP
-static struct samsung_clk_reg_dump *reg_dump;
-static unsigned long nr_reg_dump;
-
-static int samsung_clk_suspend(void)
+void samsung_clk_save(void __iomem *base,
+ struct samsung_clk_reg_dump *rd,
+ unsigned int num_regs)
{
- struct samsung_clk_reg_dump *rd = reg_dump;
- unsigned long i;
-
- for (i = 0; i < nr_reg_dump; i++, rd++)
- rd->value = __raw_readl(reg_base + rd->offset);
+ for (; num_regs > 0; --num_regs, ++rd)
+ rd->value = readl(base + rd->offset);
+}
- return 0;
+void samsung_clk_restore(void __iomem *base,
+ const struct samsung_clk_reg_dump *rd,
+ unsigned int num_regs)
+{
+ for (; num_regs > 0; --num_regs, ++rd)
+ writel(rd->value, base + rd->offset);
}
-static void samsung_clk_resume(void)
+struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump(
+ const unsigned long *rdump,
+ unsigned long nr_rdump)
{
- struct samsung_clk_reg_dump *rd = reg_dump;
- unsigned long i;
+ struct samsung_clk_reg_dump *rd;
+ unsigned int i;
- for (i = 0; i < nr_reg_dump; i++, rd++)
- __raw_writel(rd->value, reg_base + rd->offset);
-}
+ rd = kcalloc(nr_rdump, sizeof(*rd), GFP_KERNEL);
+ if (!rd)
+ return NULL;
+
+ for (i = 0; i < nr_rdump; ++i)
+ rd[i].offset = rdump[i];
-static struct syscore_ops samsung_clk_syscore_ops = {
- .suspend = samsung_clk_suspend,
- .resume = samsung_clk_resume,
-};
-#endif /* CONFIG_PM_SLEEP */
+ return rd;
+}
/* setup the essentials required to support clock lookup using ccf */
void __init samsung_clk_init(struct device_node *np, void __iomem *base,
- unsigned long nr_clks, unsigned long *rdump,
- unsigned long nr_rdump, unsigned long *soc_rdump,
- unsigned long nr_soc_rdump)
+ unsigned long nr_clks)
{
reg_base = base;
-#ifdef CONFIG_PM_SLEEP
- if (rdump && nr_rdump) {
- unsigned int idx;
- reg_dump = kzalloc(sizeof(struct samsung_clk_reg_dump)
- * (nr_rdump + nr_soc_rdump), GFP_KERNEL);
- if (!reg_dump) {
- pr_err("%s: memory alloc for register dump failed\n",
- __func__);
- return;
- }
-
- for (idx = 0; idx < nr_rdump; idx++)
- reg_dump[idx].offset = rdump[idx];
- for (idx = 0; idx < nr_soc_rdump; idx++)
- reg_dump[nr_rdump + idx].offset = soc_rdump[idx];
- nr_reg_dump = nr_rdump + nr_soc_rdump;
- register_syscore_ops(&samsung_clk_syscore_ops);
- }
-#endif
-
clk_table = kzalloc(sizeof(struct clk *) * nr_clks, GFP_KERNEL);
if (!clk_table)
panic("could not allocate clock lookup table\n");
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h
index 31b4174e7a5b..c7141ba826e0 100644
--- a/drivers/clk/samsung/clk.h
+++ b/drivers/clk/samsung/clk.h
@@ -313,9 +313,7 @@ struct samsung_pll_clock {
_lock, _con, _rtable, _alias)
extern void __init samsung_clk_init(struct device_node *np, void __iomem *base,
- unsigned long nr_clks, unsigned long *rdump,
- unsigned long nr_rdump, unsigned long *soc_rdump,
- unsigned long nr_soc_rdump);
+ unsigned long nr_clks);
extern void __init samsung_clk_of_register_fixed_ext(
struct samsung_fixed_rate_clock *fixed_rate_clk,
unsigned int nr_fixed_rate_clk,
@@ -340,4 +338,14 @@ extern void __init samsung_clk_register_pll(struct samsung_pll_clock *pll_list,
extern unsigned long _get_rate(const char *clk_name);
+extern void samsung_clk_save(void __iomem *base,
+ struct samsung_clk_reg_dump *rd,
+ unsigned int num_regs);
+extern void samsung_clk_restore(void __iomem *base,
+ const struct samsung_clk_reg_dump *rd,
+ unsigned int num_regs);
+extern struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump(
+ const unsigned long *rdump,
+ unsigned long nr_rdump);
+
#endif /* __SAMSUNG_CLK_H */
diff --git a/drivers/clk/shmobile/Makefile b/drivers/clk/shmobile/Makefile
index 9ecef140dba7..5404cb931ebf 100644
--- a/drivers/clk/shmobile/Makefile
+++ b/drivers/clk/shmobile/Makefile
@@ -1,4 +1,5 @@
obj-$(CONFIG_ARCH_EMEV2) += clk-emev2.o
+obj-$(CONFIG_ARCH_R7S72100) += clk-rz.o
obj-$(CONFIG_ARCH_R8A7790) += clk-rcar-gen2.o
obj-$(CONFIG_ARCH_R8A7791) += clk-rcar-gen2.o
obj-$(CONFIG_ARCH_SHMOBILE_MULTI) += clk-div6.o
diff --git a/drivers/clk/shmobile/clk-div6.c b/drivers/clk/shmobile/clk-div6.c
index aac4756ec52e..f065f694cb65 100644
--- a/drivers/clk/shmobile/clk-div6.c
+++ b/drivers/clk/shmobile/clk-div6.c
@@ -23,7 +23,7 @@
#define CPG_DIV6_DIV_MASK 0x3f
/**
- * struct div6_clock - MSTP gating clock
+ * struct div6_clock - CPG 6 bit divider clock
* @hw: handle between common and hardware-specific interfaces
* @reg: IO-remapped register
* @div: divisor value (1-64)
diff --git a/drivers/clk/shmobile/clk-mstp.c b/drivers/clk/shmobile/clk-mstp.c
index 42d5912b1d25..2e5810c88d11 100644
--- a/drivers/clk/shmobile/clk-mstp.c
+++ b/drivers/clk/shmobile/clk-mstp.c
@@ -137,7 +137,7 @@ cpg_mstp_clock_register(const char *name, const char *parent_name,
init.name = name;
init.ops = &cpg_mstp_clock_ops;
- init.flags = CLK_IS_BASIC;
+ init.flags = CLK_IS_BASIC | CLK_SET_RATE_PARENT;
init.parent_names = &parent_name;
init.num_parents = 1;
diff --git a/drivers/clk/shmobile/clk-rcar-gen2.c b/drivers/clk/shmobile/clk-rcar-gen2.c
index a59ec217a124..dff7f79a19b9 100644
--- a/drivers/clk/shmobile/clk-rcar-gen2.c
+++ b/drivers/clk/shmobile/clk-rcar-gen2.c
@@ -26,6 +26,8 @@ struct rcar_gen2_cpg {
void __iomem *reg;
};
+#define CPG_FRQCRB 0x00000004
+#define CPG_FRQCRB_KICK BIT(31)
#define CPG_SDCKCR 0x00000074
#define CPG_PLL0CR 0x000000d8
#define CPG_FRQCRC 0x000000e0
@@ -45,6 +47,7 @@ struct rcar_gen2_cpg {
struct cpg_z_clk {
struct clk_hw hw;
void __iomem *reg;
+ void __iomem *kick_reg;
};
#define to_z_clk(_hw) container_of(_hw, struct cpg_z_clk, hw)
@@ -83,17 +86,45 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
{
struct cpg_z_clk *zclk = to_z_clk(hw);
unsigned int mult;
- u32 val;
+ u32 val, kick;
+ unsigned int i;
mult = div_u64((u64)rate * 32, parent_rate);
mult = clamp(mult, 1U, 32U);
+ if (clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
+ return -EBUSY;
+
val = clk_readl(zclk->reg);
val &= ~CPG_FRQCRC_ZFC_MASK;
val |= (32 - mult) << CPG_FRQCRC_ZFC_SHIFT;
clk_writel(val, zclk->reg);
- return 0;
+ /*
+ * Set KICK bit in FRQCRB to update hardware setting and wait for
+ * clock change completion.
+ */
+ kick = clk_readl(zclk->kick_reg);
+ kick |= CPG_FRQCRB_KICK;
+ clk_writel(kick, zclk->kick_reg);
+
+ /*
+ * Note: There is no HW information about the worst case latency.
+ *
+ * Using experimental measurements, it seems that no more than
+ * ~10 iterations are needed, independently of the CPU rate.
+ * Since this value might be dependant of external xtal rate, pll1
+ * rate or even the other emulation clocks rate, use 1000 as a
+ * "super" safe value.
+ */
+ for (i = 1000; i; i--) {
+ if (!(clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
+ return 0;
+
+ cpu_relax();
+ }
+
+ return -ETIMEDOUT;
}
static const struct clk_ops cpg_z_clk_ops = {
@@ -120,6 +151,7 @@ static struct clk * __init cpg_z_clk_register(struct rcar_gen2_cpg *cpg)
init.num_parents = 1;
zclk->reg = cpg->reg + CPG_FRQCRC;
+ zclk->kick_reg = cpg->reg + CPG_FRQCRB;
zclk->hw.init = &init;
clk = clk_register(NULL, &zclk->hw);
@@ -186,7 +218,7 @@ rcar_gen2_cpg_register_clock(struct device_node *np, struct rcar_gen2_cpg *cpg,
const char *name)
{
const struct clk_div_table *table = NULL;
- const char *parent_name = "main";
+ const char *parent_name;
unsigned int shift;
unsigned int mult = 1;
unsigned int div = 1;
@@ -201,23 +233,31 @@ rcar_gen2_cpg_register_clock(struct device_node *np, struct rcar_gen2_cpg *cpg,
* the multiplier value.
*/
u32 value = clk_readl(cpg->reg + CPG_PLL0CR);
+ parent_name = "main";
mult = ((value >> 24) & ((1 << 7) - 1)) + 1;
} else if (!strcmp(name, "pll1")) {
+ parent_name = "main";
mult = config->pll1_mult / 2;
} else if (!strcmp(name, "pll3")) {
+ parent_name = "main";
mult = config->pll3_mult;
} else if (!strcmp(name, "lb")) {
+ parent_name = "pll1";
div = cpg_mode & BIT(18) ? 36 : 24;
} else if (!strcmp(name, "qspi")) {
+ parent_name = "pll1_div2";
div = (cpg_mode & (BIT(3) | BIT(2) | BIT(1))) == BIT(2)
- ? 16 : 20;
+ ? 8 : 10;
} else if (!strcmp(name, "sdh")) {
+ parent_name = "pll1";
table = cpg_sdh_div_table;
shift = 8;
} else if (!strcmp(name, "sd0")) {
+ parent_name = "pll1";
table = cpg_sd01_div_table;
shift = 4;
} else if (!strcmp(name, "sd1")) {
+ parent_name = "pll1";
table = cpg_sd01_div_table;
shift = 0;
} else if (!strcmp(name, "z")) {
diff --git a/drivers/clk/shmobile/clk-rz.c b/drivers/clk/shmobile/clk-rz.c
new file mode 100644
index 000000000000..7e68e8630962
--- /dev/null
+++ b/drivers/clk/shmobile/clk-rz.c
@@ -0,0 +1,103 @@
+/*
+ * rz Core CPG Clocks
+ *
+ * Copyright (C) 2013 Ideas On Board SPRL
+ * Copyright (C) 2014 Wolfram Sang, Sang Engineering <wsa@sang-engineering.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+
+struct rz_cpg {
+ struct clk_onecell_data data;
+ void __iomem *reg;
+};
+
+#define CPG_FRQCR 0x10
+#define CPG_FRQCR2 0x14
+
+/* -----------------------------------------------------------------------------
+ * Initialization
+ */
+
+static struct clk * __init
+rz_cpg_register_clock(struct device_node *np, struct rz_cpg *cpg, const char *name)
+{
+ u32 val;
+ unsigned mult;
+ static const unsigned frqcr_tab[4] = { 3, 2, 0, 1 };
+
+ if (strcmp(name, "pll") == 0) {
+ /* FIXME: cpg_mode should be read from GPIO. But no GPIO support yet */
+ unsigned cpg_mode = 0; /* hardcoded to EXTAL for now */
+ const char *parent_name = of_clk_get_parent_name(np, cpg_mode);
+
+ mult = cpg_mode ? (32 / 4) : 30;
+
+ return clk_register_fixed_factor(NULL, name, parent_name, 0, mult, 1);
+ }
+
+ /* If mapping regs failed, skip non-pll clocks. System will boot anyhow */
+ if (!cpg->reg)
+ return ERR_PTR(-ENXIO);
+
+ /* FIXME:"i" and "g" are variable clocks with non-integer dividers (e.g. 2/3)
+ * and the constraint that always g <= i. To get the rz platform started,
+ * let them run at fixed current speed and implement the details later.
+ */
+ if (strcmp(name, "i") == 0)
+ val = (clk_readl(cpg->reg + CPG_FRQCR) >> 8) & 3;
+ else if (strcmp(name, "g") == 0)
+ val = clk_readl(cpg->reg + CPG_FRQCR2) & 3;
+ else
+ return ERR_PTR(-EINVAL);
+
+ mult = frqcr_tab[val];
+ return clk_register_fixed_factor(NULL, name, "pll", 0, mult, 3);
+}
+
+static void __init rz_cpg_clocks_init(struct device_node *np)
+{
+ struct rz_cpg *cpg;
+ struct clk **clks;
+ unsigned i;
+ int num_clks;
+
+ num_clks = of_property_count_strings(np, "clock-output-names");
+ if (WARN(num_clks <= 0, "can't count CPG clocks\n"))
+ return;
+
+ cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
+ clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL);
+ BUG_ON(!cpg || !clks);
+
+ cpg->data.clks = clks;
+ cpg->data.clk_num = num_clks;
+
+ cpg->reg = of_iomap(np, 0);
+
+ for (i = 0; i < num_clks; ++i) {
+ const char *name;
+ struct clk *clk;
+
+ of_property_read_string_index(np, "clock-output-names", i, &name);
+
+ clk = rz_cpg_register_clock(np, cpg, name);
+ if (IS_ERR(clk))
+ pr_err("%s: failed to register %s %s clock (%ld)\n",
+ __func__, np->name, name, PTR_ERR(clk));
+ else
+ cpg->data.clks[i] = clk;
+ }
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, &cpg->data);
+}
+CLK_OF_DECLARE(rz_cpg_clks, "renesas,rz-cpg-clocks", rz_cpg_clocks_init);
diff --git a/drivers/clk/sirf/clk-atlas6.c b/drivers/clk/sirf/clk-atlas6.c
index f9f4a15a64ab..d63b76ca60c3 100644
--- a/drivers/clk/sirf/clk-atlas6.c
+++ b/drivers/clk/sirf/clk-atlas6.c
@@ -1,7 +1,8 @@
/*
* Clock tree for CSR SiRFatlasVI
*
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ * Copyright (c) 2011 - 2014 Cambridge Silicon Radio Limited, a CSR plc group
+ * company.
*
* Licensed under GPLv2 or later.
*/
diff --git a/drivers/clk/sirf/clk-common.c b/drivers/clk/sirf/clk-common.c
index 7dde6a82f514..37af51c5f213 100644
--- a/drivers/clk/sirf/clk-common.c
+++ b/drivers/clk/sirf/clk-common.c
@@ -1,7 +1,8 @@
/*
* common clks module for all SiRF SoCs
*
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ * Copyright (c) 2011 - 2014 Cambridge Silicon Radio Limited, a CSR plc group
+ * company.
*
* Licensed under GPLv2 or later.
*/
diff --git a/drivers/clk/sirf/clk-prima2.c b/drivers/clk/sirf/clk-prima2.c
index 7adc5c70c7ff..6968e2ebcd8a 100644
--- a/drivers/clk/sirf/clk-prima2.c
+++ b/drivers/clk/sirf/clk-prima2.c
@@ -1,7 +1,8 @@
/*
* Clock tree for CSR SiRFprimaII
*
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ * Copyright (c) 2011 - 2014 Cambridge Silicon Radio Limited, a CSR plc group
+ * company.
*
* Licensed under GPLv2 or later.
*/
diff --git a/drivers/clk/socfpga/Makefile b/drivers/clk/socfpga/Makefile
index 0303c0b99cd0..7e2d15a0c7b8 100644
--- a/drivers/clk/socfpga/Makefile
+++ b/drivers/clk/socfpga/Makefile
@@ -1 +1,4 @@
obj-y += clk.o
+obj-y += clk-gate.o
+obj-y += clk-pll.o
+obj-y += clk-periph.o
diff --git a/drivers/clk/socfpga/clk-gate.c b/drivers/clk/socfpga/clk-gate.c
new file mode 100644
index 000000000000..501d513bf890
--- /dev/null
+++ b/drivers/clk/socfpga/clk-gate.c
@@ -0,0 +1,263 @@
+/*
+ * Copyright 2011-2012 Calxeda, Inc.
+ * Copyright (C) 2012-2013 Altera Corporation <www.altera.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Based from clk-highbank.c
+ *
+ */
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include "clk.h"
+
+#define SOCFPGA_L4_MP_CLK "l4_mp_clk"
+#define SOCFPGA_L4_SP_CLK "l4_sp_clk"
+#define SOCFPGA_NAND_CLK "nand_clk"
+#define SOCFPGA_NAND_X_CLK "nand_x_clk"
+#define SOCFPGA_MMC_CLK "sdmmc_clk"
+#define SOCFPGA_GPIO_DB_CLK_OFFSET 0xA8
+
+#define div_mask(width) ((1 << (width)) - 1)
+#define streq(a, b) (strcmp((a), (b)) == 0)
+
+#define to_socfpga_gate_clk(p) container_of(p, struct socfpga_gate_clk, hw.hw)
+
+/* SDMMC Group for System Manager defines */
+#define SYSMGR_SDMMCGRP_CTRL_OFFSET 0x108
+#define SYSMGR_SDMMC_CTRL_SET(smplsel, drvsel) \
+ ((((smplsel) & 0x7) << 3) | (((drvsel) & 0x7) << 0))
+
+static u8 socfpga_clk_get_parent(struct clk_hw *hwclk)
+{
+ u32 l4_src;
+ u32 perpll_src;
+
+ if (streq(hwclk->init->name, SOCFPGA_L4_MP_CLK)) {
+ l4_src = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
+ return l4_src &= 0x1;
+ }
+ if (streq(hwclk->init->name, SOCFPGA_L4_SP_CLK)) {
+ l4_src = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
+ return !!(l4_src & 2);
+ }
+
+ perpll_src = readl(clk_mgr_base_addr + CLKMGR_PERPLL_SRC);
+ if (streq(hwclk->init->name, SOCFPGA_MMC_CLK))
+ return perpll_src &= 0x3;
+ if (streq(hwclk->init->name, SOCFPGA_NAND_CLK) ||
+ streq(hwclk->init->name, SOCFPGA_NAND_X_CLK))
+ return (perpll_src >> 2) & 3;
+
+ /* QSPI clock */
+ return (perpll_src >> 4) & 3;
+
+}
+
+static int socfpga_clk_set_parent(struct clk_hw *hwclk, u8 parent)
+{
+ u32 src_reg;
+
+ if (streq(hwclk->init->name, SOCFPGA_L4_MP_CLK)) {
+ src_reg = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
+ src_reg &= ~0x1;
+ src_reg |= parent;
+ writel(src_reg, clk_mgr_base_addr + CLKMGR_L4SRC);
+ } else if (streq(hwclk->init->name, SOCFPGA_L4_SP_CLK)) {
+ src_reg = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
+ src_reg &= ~0x2;
+ src_reg |= (parent << 1);
+ writel(src_reg, clk_mgr_base_addr + CLKMGR_L4SRC);
+ } else {
+ src_reg = readl(clk_mgr_base_addr + CLKMGR_PERPLL_SRC);
+ if (streq(hwclk->init->name, SOCFPGA_MMC_CLK)) {
+ src_reg &= ~0x3;
+ src_reg |= parent;
+ } else if (streq(hwclk->init->name, SOCFPGA_NAND_CLK) ||
+ streq(hwclk->init->name, SOCFPGA_NAND_X_CLK)) {
+ src_reg &= ~0xC;
+ src_reg |= (parent << 2);
+ } else {/* QSPI clock */
+ src_reg &= ~0x30;
+ src_reg |= (parent << 4);
+ }
+ writel(src_reg, clk_mgr_base_addr + CLKMGR_PERPLL_SRC);
+ }
+
+ return 0;
+}
+
+static unsigned long socfpga_clk_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct socfpga_gate_clk *socfpgaclk = to_socfpga_gate_clk(hwclk);
+ u32 div = 1, val;
+
+ if (socfpgaclk->fixed_div)
+ div = socfpgaclk->fixed_div;
+ else if (socfpgaclk->div_reg) {
+ val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift;
+ val &= div_mask(socfpgaclk->width);
+ /* Check for GPIO_DB_CLK by its offset */
+ if ((int) socfpgaclk->div_reg & SOCFPGA_GPIO_DB_CLK_OFFSET)
+ div = val + 1;
+ else
+ div = (1 << val);
+ }
+
+ return parent_rate / div;
+}
+
+static int socfpga_clk_prepare(struct clk_hw *hwclk)
+{
+ struct socfpga_gate_clk *socfpgaclk = to_socfpga_gate_clk(hwclk);
+ struct regmap *sys_mgr_base_addr;
+ int i;
+ u32 hs_timing;
+ u32 clk_phase[2];
+
+ if (socfpgaclk->clk_phase[0] || socfpgaclk->clk_phase[1]) {
+ sys_mgr_base_addr = syscon_regmap_lookup_by_compatible("altr,sys-mgr");
+ if (IS_ERR(sys_mgr_base_addr)) {
+ pr_err("%s: failed to find altr,sys-mgr regmap!\n", __func__);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < 2; i++) {
+ switch (socfpgaclk->clk_phase[i]) {
+ case 0:
+ clk_phase[i] = 0;
+ break;
+ case 45:
+ clk_phase[i] = 1;
+ break;
+ case 90:
+ clk_phase[i] = 2;
+ break;
+ case 135:
+ clk_phase[i] = 3;
+ break;
+ case 180:
+ clk_phase[i] = 4;
+ break;
+ case 225:
+ clk_phase[i] = 5;
+ break;
+ case 270:
+ clk_phase[i] = 6;
+ break;
+ case 315:
+ clk_phase[i] = 7;
+ break;
+ default:
+ clk_phase[i] = 0;
+ break;
+ }
+ }
+ hs_timing = SYSMGR_SDMMC_CTRL_SET(clk_phase[0], clk_phase[1]);
+ regmap_write(sys_mgr_base_addr, SYSMGR_SDMMCGRP_CTRL_OFFSET,
+ hs_timing);
+ }
+ return 0;
+}
+
+static struct clk_ops gateclk_ops = {
+ .prepare = socfpga_clk_prepare,
+ .recalc_rate = socfpga_clk_recalc_rate,
+ .get_parent = socfpga_clk_get_parent,
+ .set_parent = socfpga_clk_set_parent,
+};
+
+static void __init __socfpga_gate_init(struct device_node *node,
+ const struct clk_ops *ops)
+{
+ u32 clk_gate[2];
+ u32 div_reg[3];
+ u32 clk_phase[2];
+ u32 fixed_div;
+ struct clk *clk;
+ struct socfpga_gate_clk *socfpga_clk;
+ const char *clk_name = node->name;
+ const char *parent_name[SOCFPGA_MAX_PARENTS];
+ struct clk_init_data init;
+ int rc;
+ int i = 0;
+
+ socfpga_clk = kzalloc(sizeof(*socfpga_clk), GFP_KERNEL);
+ if (WARN_ON(!socfpga_clk))
+ return;
+
+ rc = of_property_read_u32_array(node, "clk-gate", clk_gate, 2);
+ if (rc)
+ clk_gate[0] = 0;
+
+ if (clk_gate[0]) {
+ socfpga_clk->hw.reg = clk_mgr_base_addr + clk_gate[0];
+ socfpga_clk->hw.bit_idx = clk_gate[1];
+
+ gateclk_ops.enable = clk_gate_ops.enable;
+ gateclk_ops.disable = clk_gate_ops.disable;
+ }
+
+ rc = of_property_read_u32(node, "fixed-divider", &fixed_div);
+ if (rc)
+ socfpga_clk->fixed_div = 0;
+ else
+ socfpga_clk->fixed_div = fixed_div;
+
+ rc = of_property_read_u32_array(node, "div-reg", div_reg, 3);
+ if (!rc) {
+ socfpga_clk->div_reg = clk_mgr_base_addr + div_reg[0];
+ socfpga_clk->shift = div_reg[1];
+ socfpga_clk->width = div_reg[2];
+ } else {
+ socfpga_clk->div_reg = 0;
+ }
+
+ rc = of_property_read_u32_array(node, "clk-phase", clk_phase, 2);
+ if (!rc) {
+ socfpga_clk->clk_phase[0] = clk_phase[0];
+ socfpga_clk->clk_phase[1] = clk_phase[1];
+ }
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ init.name = clk_name;
+ init.ops = ops;
+ init.flags = 0;
+ while (i < SOCFPGA_MAX_PARENTS && (parent_name[i] =
+ of_clk_get_parent_name(node, i)) != NULL)
+ i++;
+
+ init.parent_names = parent_name;
+ init.num_parents = i;
+ socfpga_clk->hw.hw.init = &init;
+
+ clk = clk_register(NULL, &socfpga_clk->hw.hw);
+ if (WARN_ON(IS_ERR(clk))) {
+ kfree(socfpga_clk);
+ return;
+ }
+ rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ if (WARN_ON(rc))
+ return;
+}
+
+void __init socfpga_gate_init(struct device_node *node)
+{
+ __socfpga_gate_init(node, &gateclk_ops);
+}
diff --git a/drivers/clk/socfpga/clk-periph.c b/drivers/clk/socfpga/clk-periph.c
new file mode 100644
index 000000000000..81623a3736f9
--- /dev/null
+++ b/drivers/clk/socfpga/clk-periph.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2011-2012 Calxeda, Inc.
+ * Copyright (C) 2012-2013 Altera Corporation <www.altera.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Based from clk-highbank.c
+ *
+ */
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+
+#include "clk.h"
+
+#define to_socfpga_periph_clk(p) container_of(p, struct socfpga_periph_clk, hw.hw)
+
+static unsigned long clk_periclk_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct socfpga_periph_clk *socfpgaclk = to_socfpga_periph_clk(hwclk);
+ u32 div;
+
+ if (socfpgaclk->fixed_div)
+ div = socfpgaclk->fixed_div;
+ else
+ div = ((readl(socfpgaclk->hw.reg) & 0x1ff) + 1);
+
+ return parent_rate / div;
+}
+
+static const struct clk_ops periclk_ops = {
+ .recalc_rate = clk_periclk_recalc_rate,
+};
+
+static __init void __socfpga_periph_init(struct device_node *node,
+ const struct clk_ops *ops)
+{
+ u32 reg;
+ struct clk *clk;
+ struct socfpga_periph_clk *periph_clk;
+ const char *clk_name = node->name;
+ const char *parent_name;
+ struct clk_init_data init;
+ int rc;
+ u32 fixed_div;
+
+ of_property_read_u32(node, "reg", &reg);
+
+ periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
+ if (WARN_ON(!periph_clk))
+ return;
+
+ periph_clk->hw.reg = clk_mgr_base_addr + reg;
+
+ rc = of_property_read_u32(node, "fixed-divider", &fixed_div);
+ if (rc)
+ periph_clk->fixed_div = 0;
+ else
+ periph_clk->fixed_div = fixed_div;
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ init.name = clk_name;
+ init.ops = ops;
+ init.flags = 0;
+ parent_name = of_clk_get_parent_name(node, 0);
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ periph_clk->hw.hw.init = &init;
+
+ clk = clk_register(NULL, &periph_clk->hw.hw);
+ if (WARN_ON(IS_ERR(clk))) {
+ kfree(periph_clk);
+ return;
+ }
+ rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+
+void __init socfpga_periph_init(struct device_node *node)
+{
+ __socfpga_periph_init(node, &periclk_ops);
+}
diff --git a/drivers/clk/socfpga/clk-pll.c b/drivers/clk/socfpga/clk-pll.c
new file mode 100644
index 000000000000..88dafb5e9627
--- /dev/null
+++ b/drivers/clk/socfpga/clk-pll.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright 2011-2012 Calxeda, Inc.
+ * Copyright (C) 2012-2013 Altera Corporation <www.altera.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Based from clk-highbank.c
+ *
+ */
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+
+#include "clk.h"
+
+/* Clock bypass bits */
+#define MAINPLL_BYPASS (1<<0)
+#define SDRAMPLL_BYPASS (1<<1)
+#define SDRAMPLL_SRC_BYPASS (1<<2)
+#define PERPLL_BYPASS (1<<3)
+#define PERPLL_SRC_BYPASS (1<<4)
+
+#define SOCFPGA_PLL_BG_PWRDWN 0
+#define SOCFPGA_PLL_EXT_ENA 1
+#define SOCFPGA_PLL_PWR_DOWN 2
+#define SOCFPGA_PLL_DIVF_MASK 0x0000FFF8
+#define SOCFPGA_PLL_DIVF_SHIFT 3
+#define SOCFPGA_PLL_DIVQ_MASK 0x003F0000
+#define SOCFPGA_PLL_DIVQ_SHIFT 16
+
+#define CLK_MGR_PLL_CLK_SRC_SHIFT 22
+#define CLK_MGR_PLL_CLK_SRC_MASK 0x3
+
+#define to_socfpga_clk(p) container_of(p, struct socfpga_pll, hw.hw)
+
+static unsigned long clk_pll_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+ unsigned long divf, divq, reg;
+ unsigned long long vco_freq;
+ unsigned long bypass;
+
+ reg = readl(socfpgaclk->hw.reg);
+ bypass = readl(clk_mgr_base_addr + CLKMGR_BYPASS);
+ if (bypass & MAINPLL_BYPASS)
+ return parent_rate;
+
+ divf = (reg & SOCFPGA_PLL_DIVF_MASK) >> SOCFPGA_PLL_DIVF_SHIFT;
+ divq = (reg & SOCFPGA_PLL_DIVQ_MASK) >> SOCFPGA_PLL_DIVQ_SHIFT;
+ vco_freq = (unsigned long long)parent_rate * (divf + 1);
+ do_div(vco_freq, (1 + divq));
+ return (unsigned long)vco_freq;
+}
+
+static u8 clk_pll_get_parent(struct clk_hw *hwclk)
+{
+ u32 pll_src;
+ struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+
+ pll_src = readl(socfpgaclk->hw.reg);
+ return (pll_src >> CLK_MGR_PLL_CLK_SRC_SHIFT) &
+ CLK_MGR_PLL_CLK_SRC_MASK;
+}
+
+static struct clk_ops clk_pll_ops = {
+ .recalc_rate = clk_pll_recalc_rate,
+ .get_parent = clk_pll_get_parent,
+};
+
+static __init struct clk *__socfpga_pll_init(struct device_node *node,
+ const struct clk_ops *ops)
+{
+ u32 reg;
+ struct clk *clk;
+ struct socfpga_pll *pll_clk;
+ const char *clk_name = node->name;
+ const char *parent_name[SOCFPGA_MAX_PARENTS];
+ struct clk_init_data init;
+ int rc;
+ int i = 0;
+
+ of_property_read_u32(node, "reg", &reg);
+
+ pll_clk = kzalloc(sizeof(*pll_clk), GFP_KERNEL);
+ if (WARN_ON(!pll_clk))
+ return NULL;
+
+ pll_clk->hw.reg = clk_mgr_base_addr + reg;
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ init.name = clk_name;
+ init.ops = ops;
+ init.flags = 0;
+
+ while (i < SOCFPGA_MAX_PARENTS && (parent_name[i] =
+ of_clk_get_parent_name(node, i)) != NULL)
+ i++;
+
+ init.num_parents = i;
+ init.parent_names = parent_name;
+ pll_clk->hw.hw.init = &init;
+
+ pll_clk->hw.bit_idx = SOCFPGA_PLL_EXT_ENA;
+ clk_pll_ops.enable = clk_gate_ops.enable;
+ clk_pll_ops.disable = clk_gate_ops.disable;
+
+ clk = clk_register(NULL, &pll_clk->hw.hw);
+ if (WARN_ON(IS_ERR(clk))) {
+ kfree(pll_clk);
+ return NULL;
+ }
+ rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ return clk;
+}
+
+void __init socfpga_pll_init(struct device_node *node)
+{
+ __socfpga_pll_init(node, &clk_pll_ops);
+}
diff --git a/drivers/clk/socfpga/clk.c b/drivers/clk/socfpga/clk.c
index 5983a26a8c5f..35a960a993f9 100644
--- a/drivers/clk/socfpga/clk.c
+++ b/drivers/clk/socfpga/clk.c
@@ -22,325 +22,23 @@
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/of.h>
+#include <linux/of_address.h>
-/* Clock Manager offsets */
-#define CLKMGR_CTRL 0x0
-#define CLKMGR_BYPASS 0x4
-#define CLKMGR_L4SRC 0x70
-#define CLKMGR_PERPLL_SRC 0xAC
+#include "clk.h"
-/* Clock bypass bits */
-#define MAINPLL_BYPASS (1<<0)
-#define SDRAMPLL_BYPASS (1<<1)
-#define SDRAMPLL_SRC_BYPASS (1<<2)
-#define PERPLL_BYPASS (1<<3)
-#define PERPLL_SRC_BYPASS (1<<4)
+void __iomem *clk_mgr_base_addr;
-#define SOCFPGA_PLL_BG_PWRDWN 0
-#define SOCFPGA_PLL_EXT_ENA 1
-#define SOCFPGA_PLL_PWR_DOWN 2
-#define SOCFPGA_PLL_DIVF_MASK 0x0000FFF8
-#define SOCFPGA_PLL_DIVF_SHIFT 3
-#define SOCFPGA_PLL_DIVQ_MASK 0x003F0000
-#define SOCFPGA_PLL_DIVQ_SHIFT 16
-#define SOCFGPA_MAX_PARENTS 3
-
-#define SOCFPGA_L4_MP_CLK "l4_mp_clk"
-#define SOCFPGA_L4_SP_CLK "l4_sp_clk"
-#define SOCFPGA_NAND_CLK "nand_clk"
-#define SOCFPGA_NAND_X_CLK "nand_x_clk"
-#define SOCFPGA_MMC_CLK "sdmmc_clk"
-#define SOCFPGA_DB_CLK "gpio_db_clk"
-
-#define div_mask(width) ((1 << (width)) - 1)
-#define streq(a, b) (strcmp((a), (b)) == 0)
-
-extern void __iomem *clk_mgr_base_addr;
-
-struct socfpga_clk {
- struct clk_gate hw;
- char *parent_name;
- char *clk_name;
- u32 fixed_div;
- void __iomem *div_reg;
- u32 width; /* only valid if div_reg != 0 */
- u32 shift; /* only valid if div_reg != 0 */
-};
-#define to_socfpga_clk(p) container_of(p, struct socfpga_clk, hw.hw)
-
-static unsigned long clk_pll_recalc_rate(struct clk_hw *hwclk,
- unsigned long parent_rate)
-{
- struct socfpga_clk *socfpgaclk = to_socfpga_clk(hwclk);
- unsigned long divf, divq, vco_freq, reg;
- unsigned long bypass;
-
- reg = readl(socfpgaclk->hw.reg);
- bypass = readl(clk_mgr_base_addr + CLKMGR_BYPASS);
- if (bypass & MAINPLL_BYPASS)
- return parent_rate;
-
- divf = (reg & SOCFPGA_PLL_DIVF_MASK) >> SOCFPGA_PLL_DIVF_SHIFT;
- divq = (reg & SOCFPGA_PLL_DIVQ_MASK) >> SOCFPGA_PLL_DIVQ_SHIFT;
- vco_freq = parent_rate * (divf + 1);
- return vco_freq / (1 + divq);
-}
-
-
-static struct clk_ops clk_pll_ops = {
- .recalc_rate = clk_pll_recalc_rate,
-};
-
-static unsigned long clk_periclk_recalc_rate(struct clk_hw *hwclk,
- unsigned long parent_rate)
-{
- struct socfpga_clk *socfpgaclk = to_socfpga_clk(hwclk);
- u32 div;
-
- if (socfpgaclk->fixed_div)
- div = socfpgaclk->fixed_div;
- else
- div = ((readl(socfpgaclk->hw.reg) & 0x1ff) + 1);
-
- return parent_rate / div;
-}
-
-static const struct clk_ops periclk_ops = {
- .recalc_rate = clk_periclk_recalc_rate,
-};
-
-static __init struct clk *socfpga_clk_init(struct device_node *node,
- const struct clk_ops *ops)
-{
- u32 reg;
- struct clk *clk;
- struct socfpga_clk *socfpga_clk;
- const char *clk_name = node->name;
- const char *parent_name;
- struct clk_init_data init;
- int rc;
- u32 fixed_div;
-
- of_property_read_u32(node, "reg", &reg);
-
- socfpga_clk = kzalloc(sizeof(*socfpga_clk), GFP_KERNEL);
- if (WARN_ON(!socfpga_clk))
- return NULL;
-
- socfpga_clk->hw.reg = clk_mgr_base_addr + reg;
-
- rc = of_property_read_u32(node, "fixed-divider", &fixed_div);
- if (rc)
- socfpga_clk->fixed_div = 0;
- else
- socfpga_clk->fixed_div = fixed_div;
-
- of_property_read_string(node, "clock-output-names", &clk_name);
-
- init.name = clk_name;
- init.ops = ops;
- init.flags = 0;
- parent_name = of_clk_get_parent_name(node, 0);
- init.parent_names = &parent_name;
- init.num_parents = 1;
-
- socfpga_clk->hw.hw.init = &init;
-
- if (streq(clk_name, "main_pll") ||
- streq(clk_name, "periph_pll") ||
- streq(clk_name, "sdram_pll")) {
- socfpga_clk->hw.bit_idx = SOCFPGA_PLL_EXT_ENA;
- clk_pll_ops.enable = clk_gate_ops.enable;
- clk_pll_ops.disable = clk_gate_ops.disable;
- }
-
- clk = clk_register(NULL, &socfpga_clk->hw.hw);
- if (WARN_ON(IS_ERR(clk))) {
- kfree(socfpga_clk);
- return NULL;
- }
- rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
- return clk;
-}
-
-static u8 socfpga_clk_get_parent(struct clk_hw *hwclk)
-{
- u32 l4_src;
- u32 perpll_src;
-
- if (streq(hwclk->init->name, SOCFPGA_L4_MP_CLK)) {
- l4_src = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
- return l4_src &= 0x1;
- }
- if (streq(hwclk->init->name, SOCFPGA_L4_SP_CLK)) {
- l4_src = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
- return !!(l4_src & 2);
- }
-
- perpll_src = readl(clk_mgr_base_addr + CLKMGR_PERPLL_SRC);
- if (streq(hwclk->init->name, SOCFPGA_MMC_CLK))
- return perpll_src &= 0x3;
- if (streq(hwclk->init->name, SOCFPGA_NAND_CLK) ||
- streq(hwclk->init->name, SOCFPGA_NAND_X_CLK))
- return (perpll_src >> 2) & 3;
-
- /* QSPI clock */
- return (perpll_src >> 4) & 3;
-
-}
-
-static int socfpga_clk_set_parent(struct clk_hw *hwclk, u8 parent)
-{
- u32 src_reg;
-
- if (streq(hwclk->init->name, SOCFPGA_L4_MP_CLK)) {
- src_reg = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
- src_reg &= ~0x1;
- src_reg |= parent;
- writel(src_reg, clk_mgr_base_addr + CLKMGR_L4SRC);
- } else if (streq(hwclk->init->name, SOCFPGA_L4_SP_CLK)) {
- src_reg = readl(clk_mgr_base_addr + CLKMGR_L4SRC);
- src_reg &= ~0x2;
- src_reg |= (parent << 1);
- writel(src_reg, clk_mgr_base_addr + CLKMGR_L4SRC);
- } else {
- src_reg = readl(clk_mgr_base_addr + CLKMGR_PERPLL_SRC);
- if (streq(hwclk->init->name, SOCFPGA_MMC_CLK)) {
- src_reg &= ~0x3;
- src_reg |= parent;
- } else if (streq(hwclk->init->name, SOCFPGA_NAND_CLK) ||
- streq(hwclk->init->name, SOCFPGA_NAND_X_CLK)) {
- src_reg &= ~0xC;
- src_reg |= (parent << 2);
- } else {/* QSPI clock */
- src_reg &= ~0x30;
- src_reg |= (parent << 4);
- }
- writel(src_reg, clk_mgr_base_addr + CLKMGR_PERPLL_SRC);
- }
-
- return 0;
-}
-
-static unsigned long socfpga_clk_recalc_rate(struct clk_hw *hwclk,
- unsigned long parent_rate)
-{
- struct socfpga_clk *socfpgaclk = to_socfpga_clk(hwclk);
- u32 div = 1, val;
-
- if (socfpgaclk->fixed_div)
- div = socfpgaclk->fixed_div;
- else if (socfpgaclk->div_reg) {
- val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift;
- val &= div_mask(socfpgaclk->width);
- if (streq(hwclk->init->name, SOCFPGA_DB_CLK))
- div = val + 1;
- else
- div = (1 << val);
- }
-
- return parent_rate / div;
-}
-
-static struct clk_ops gateclk_ops = {
- .recalc_rate = socfpga_clk_recalc_rate,
- .get_parent = socfpga_clk_get_parent,
- .set_parent = socfpga_clk_set_parent,
+static const struct of_device_id socfpga_child_clocks[] __initconst = {
+ { .compatible = "altr,socfpga-pll-clock", socfpga_pll_init, },
+ { .compatible = "altr,socfpga-perip-clk", socfpga_periph_init, },
+ { .compatible = "altr,socfpga-gate-clk", socfpga_gate_init, },
+ {},
};
-static void __init socfpga_gate_clk_init(struct device_node *node,
- const struct clk_ops *ops)
-{
- u32 clk_gate[2];
- u32 div_reg[3];
- u32 fixed_div;
- struct clk *clk;
- struct socfpga_clk *socfpga_clk;
- const char *clk_name = node->name;
- const char *parent_name[SOCFGPA_MAX_PARENTS];
- struct clk_init_data init;
- int rc;
- int i = 0;
-
- socfpga_clk = kzalloc(sizeof(*socfpga_clk), GFP_KERNEL);
- if (WARN_ON(!socfpga_clk))
- return;
-
- rc = of_property_read_u32_array(node, "clk-gate", clk_gate, 2);
- if (rc)
- clk_gate[0] = 0;
-
- if (clk_gate[0]) {
- socfpga_clk->hw.reg = clk_mgr_base_addr + clk_gate[0];
- socfpga_clk->hw.bit_idx = clk_gate[1];
-
- gateclk_ops.enable = clk_gate_ops.enable;
- gateclk_ops.disable = clk_gate_ops.disable;
- }
-
- rc = of_property_read_u32(node, "fixed-divider", &fixed_div);
- if (rc)
- socfpga_clk->fixed_div = 0;
- else
- socfpga_clk->fixed_div = fixed_div;
-
- rc = of_property_read_u32_array(node, "div-reg", div_reg, 3);
- if (!rc) {
- socfpga_clk->div_reg = clk_mgr_base_addr + div_reg[0];
- socfpga_clk->shift = div_reg[1];
- socfpga_clk->width = div_reg[2];
- } else {
- socfpga_clk->div_reg = NULL;
- }
-
- of_property_read_string(node, "clock-output-names", &clk_name);
-
- init.name = clk_name;
- init.ops = ops;
- init.flags = 0;
- while (i < SOCFGPA_MAX_PARENTS && (parent_name[i] =
- of_clk_get_parent_name(node, i)) != NULL)
- i++;
-
- init.parent_names = parent_name;
- init.num_parents = i;
- socfpga_clk->hw.hw.init = &init;
-
- clk = clk_register(NULL, &socfpga_clk->hw.hw);
- if (WARN_ON(IS_ERR(clk))) {
- kfree(socfpga_clk);
- return;
- }
- rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
- if (WARN_ON(rc))
- return;
-}
-
-static void __init socfpga_pll_init(struct device_node *node)
+static void __init socfpga_clkmgr_init(struct device_node *node)
{
- socfpga_clk_init(node, &clk_pll_ops);
+ clk_mgr_base_addr = of_iomap(node, 0);
+ of_clk_init(socfpga_child_clocks);
}
-CLK_OF_DECLARE(socfpga_pll, "altr,socfpga-pll-clock", socfpga_pll_init);
+CLK_OF_DECLARE(socfpga_mgr, "altr,clk-mgr", socfpga_clkmgr_init);
-static void __init socfpga_periph_init(struct device_node *node)
-{
- socfpga_clk_init(node, &periclk_ops);
-}
-CLK_OF_DECLARE(socfpga_periph, "altr,socfpga-perip-clk", socfpga_periph_init);
-
-static void __init socfpga_gate_init(struct device_node *node)
-{
- socfpga_gate_clk_init(node, &gateclk_ops);
-}
-CLK_OF_DECLARE(socfpga_gate, "altr,socfpga-gate-clk", socfpga_gate_init);
-
-void __init socfpga_init_clocks(void)
-{
- struct clk *clk;
- int ret;
-
- clk = clk_register_fixed_factor(NULL, "smp_twd", "mpuclk", 0, 1, 4);
- ret = clk_register_clkdev(clk, NULL, "smp_twd");
- if (ret)
- pr_err("smp_twd alias not registered\n");
-}
diff --git a/drivers/clk/socfpga/clk.h b/drivers/clk/socfpga/clk.h
new file mode 100644
index 000000000000..d2e54019c94f
--- /dev/null
+++ b/drivers/clk/socfpga/clk.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2013, Steffen Trumtrar <s.trumtrar@pengutronix.de>
+ *
+ * based on drivers/clk/tegra/clk.h
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#ifndef __SOCFPGA_CLK_H
+#define __SOCFPGA_CLK_H
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+
+/* Clock Manager offsets */
+#define CLKMGR_CTRL 0x0
+#define CLKMGR_BYPASS 0x4
+#define CLKMGR_L4SRC 0x70
+#define CLKMGR_PERPLL_SRC 0xAC
+
+#define SOCFPGA_MAX_PARENTS 3
+
+extern void __iomem *clk_mgr_base_addr;
+
+void __init socfpga_pll_init(struct device_node *node);
+void __init socfpga_periph_init(struct device_node *node);
+void __init socfpga_gate_init(struct device_node *node);
+
+struct socfpga_pll {
+ struct clk_gate hw;
+};
+
+struct socfpga_gate_clk {
+ struct clk_gate hw;
+ char *parent_name;
+ u32 fixed_div;
+ void __iomem *div_reg;
+ u32 width; /* only valid if div_reg != 0 */
+ u32 shift; /* only valid if div_reg != 0 */
+ u32 clk_phase[2];
+};
+
+struct socfpga_periph_clk {
+ struct clk_gate hw;
+ char *parent_name;
+ u32 fixed_div;
+};
+
+#endif /* SOCFPGA_CLK_H */
diff --git a/drivers/clk/st/Makefile b/drivers/clk/st/Makefile
new file mode 100644
index 000000000000..c7455ffdbdf7
--- /dev/null
+++ b/drivers/clk/st/Makefile
@@ -0,0 +1 @@
+obj-y += clkgen-mux.o clkgen-pll.o clkgen-fsyn.o
diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
new file mode 100644
index 000000000000..4f53ee0778d9
--- /dev/null
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -0,0 +1,1039 @@
+/*
+ * Copyright (C) 2014 STMicroelectronics R&D Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+/*
+ * Authors:
+ * Stephen Gallimore <stephen.gallimore@st.com>,
+ * Pankaj Dev <pankaj.dev@st.com>.
+ */
+
+#include <linux/slab.h>
+#include <linux/of_address.h>
+#include <linux/clk-provider.h>
+
+#include "clkgen.h"
+
+/*
+ * Maximum input clock to the PLL before we divide it down by 2
+ * although in reality in actual systems this has never been seen to
+ * be used.
+ */
+#define QUADFS_NDIV_THRESHOLD 30000000
+
+#define PLL_BW_GOODREF (0L)
+#define PLL_BW_VBADREF (1L)
+#define PLL_BW_BADREF (2L)
+#define PLL_BW_VGOODREF (3L)
+
+#define QUADFS_MAX_CHAN 4
+
+struct stm_fs {
+ unsigned long ndiv;
+ unsigned long mdiv;
+ unsigned long pe;
+ unsigned long sdiv;
+ unsigned long nsdiv;
+};
+
+static struct stm_fs fs216c65_rtbl[] = {
+ { .mdiv = 0x1f, .pe = 0x0, .sdiv = 0x7, .nsdiv = 0 }, /* 312.5 Khz */
+ { .mdiv = 0x17, .pe = 0x25ed, .sdiv = 0x1, .nsdiv = 0 }, /* 27 MHz */
+ { .mdiv = 0x1a, .pe = 0x7b36, .sdiv = 0x2, .nsdiv = 1 }, /* 36.87 MHz */
+ { .mdiv = 0x13, .pe = 0x0, .sdiv = 0x2, .nsdiv = 1 }, /* 48 MHz */
+ { .mdiv = 0x11, .pe = 0x1c72, .sdiv = 0x1, .nsdiv = 1 }, /* 108 MHz */
+};
+
+static struct stm_fs fs432c65_rtbl[] = {
+ { .mdiv = 0x1f, .pe = 0x0, .sdiv = 0x7, .nsdiv = 0 }, /* 625 Khz */
+ { .mdiv = 0x11, .pe = 0x1c72, .sdiv = 0x2, .nsdiv = 1 }, /* 108 MHz */
+ { .mdiv = 0x19, .pe = 0x121a, .sdiv = 0x0, .nsdiv = 1 }, /* 297 MHz */
+};
+
+static struct stm_fs fs660c32_rtbl[] = {
+ { .mdiv = 0x01, .pe = 0x2aaa, .sdiv = 0x8, .nsdiv = 0 }, /* 600 KHz */
+ { .mdiv = 0x02, .pe = 0x3d33, .sdiv = 0x0, .nsdiv = 0 }, /* 148.5 Mhz */
+ { .mdiv = 0x13, .pe = 0x5bcc, .sdiv = 0x0, .nsdiv = 1 }, /* 297 Mhz */
+ { .mdiv = 0x0e, .pe = 0x1025, .sdiv = 0x0, .nsdiv = 1 }, /* 333 Mhz */
+ { .mdiv = 0x0b, .pe = 0x715f, .sdiv = 0x0, .nsdiv = 1 }, /* 350 Mhz */
+};
+
+struct clkgen_quadfs_data {
+ bool reset_present;
+ bool bwfilter_present;
+ bool lockstatus_present;
+ bool nsdiv_present;
+ struct clkgen_field ndiv;
+ struct clkgen_field ref_bw;
+ struct clkgen_field nreset;
+ struct clkgen_field npda;
+ struct clkgen_field lock_status;
+
+ struct clkgen_field nsb[QUADFS_MAX_CHAN];
+ struct clkgen_field en[QUADFS_MAX_CHAN];
+ struct clkgen_field mdiv[QUADFS_MAX_CHAN];
+ struct clkgen_field pe[QUADFS_MAX_CHAN];
+ struct clkgen_field sdiv[QUADFS_MAX_CHAN];
+ struct clkgen_field nsdiv[QUADFS_MAX_CHAN];
+
+ const struct clk_ops *pll_ops;
+ struct stm_fs *rtbl;
+ u8 rtbl_cnt;
+ int (*get_rate)(unsigned long , struct stm_fs *,
+ unsigned long *);
+};
+
+static const struct clk_ops st_quadfs_pll_c65_ops;
+static const struct clk_ops st_quadfs_pll_c32_ops;
+static const struct clk_ops st_quadfs_fs216c65_ops;
+static const struct clk_ops st_quadfs_fs432c65_ops;
+static const struct clk_ops st_quadfs_fs660c32_ops;
+
+static int clk_fs216c65_get_rate(unsigned long, struct stm_fs *,
+ unsigned long *);
+static int clk_fs432c65_get_rate(unsigned long, struct stm_fs *,
+ unsigned long *);
+static int clk_fs660c32_dig_get_rate(unsigned long, struct stm_fs *,
+ unsigned long *);
+/*
+ * Values for all of the standalone instances of this clock
+ * generator found in STiH415 and STiH416 SYSCFG register banks. Note
+ * that the individual channel standby control bits (nsb) are in the
+ * first register along with the PLL control bits.
+ */
+static struct clkgen_quadfs_data st_fs216c65_416 = {
+ /* 416 specific */
+ .npda = CLKGEN_FIELD(0x0, 0x1, 14),
+ .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
+ CLKGEN_FIELD(0x0, 0x1, 11),
+ CLKGEN_FIELD(0x0, 0x1, 12),
+ CLKGEN_FIELD(0x0, 0x1, 13) },
+ .nsdiv_present = true,
+ .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
+ CLKGEN_FIELD(0x0, 0x1, 19),
+ CLKGEN_FIELD(0x0, 0x1, 20),
+ CLKGEN_FIELD(0x0, 0x1, 21) },
+ .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
+ CLKGEN_FIELD(0x14, 0x1f, 0),
+ CLKGEN_FIELD(0x24, 0x1f, 0),
+ CLKGEN_FIELD(0x34, 0x1f, 0) },
+ .en = { CLKGEN_FIELD(0x10, 0x1, 0),
+ CLKGEN_FIELD(0x20, 0x1, 0),
+ CLKGEN_FIELD(0x30, 0x1, 0),
+ CLKGEN_FIELD(0x40, 0x1, 0) },
+ .ndiv = CLKGEN_FIELD(0x0, 0x1, 15),
+ .bwfilter_present = true,
+ .ref_bw = CLKGEN_FIELD(0x0, 0x3, 16),
+ .pe = { CLKGEN_FIELD(0x8, 0xffff, 0),
+ CLKGEN_FIELD(0x18, 0xffff, 0),
+ CLKGEN_FIELD(0x28, 0xffff, 0),
+ CLKGEN_FIELD(0x38, 0xffff, 0) },
+ .sdiv = { CLKGEN_FIELD(0xC, 0x7, 0),
+ CLKGEN_FIELD(0x1C, 0x7, 0),
+ CLKGEN_FIELD(0x2C, 0x7, 0),
+ CLKGEN_FIELD(0x3C, 0x7, 0) },
+ .pll_ops = &st_quadfs_pll_c65_ops,
+ .rtbl = fs216c65_rtbl,
+ .rtbl_cnt = ARRAY_SIZE(fs216c65_rtbl),
+ .get_rate = clk_fs216c65_get_rate,
+};
+
+static struct clkgen_quadfs_data st_fs432c65_416 = {
+ .npda = CLKGEN_FIELD(0x0, 0x1, 14),
+ .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
+ CLKGEN_FIELD(0x0, 0x1, 11),
+ CLKGEN_FIELD(0x0, 0x1, 12),
+ CLKGEN_FIELD(0x0, 0x1, 13) },
+ .nsdiv_present = true,
+ .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
+ CLKGEN_FIELD(0x0, 0x1, 19),
+ CLKGEN_FIELD(0x0, 0x1, 20),
+ CLKGEN_FIELD(0x0, 0x1, 21) },
+ .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
+ CLKGEN_FIELD(0x14, 0x1f, 0),
+ CLKGEN_FIELD(0x24, 0x1f, 0),
+ CLKGEN_FIELD(0x34, 0x1f, 0) },
+ .en = { CLKGEN_FIELD(0x10, 0x1, 0),
+ CLKGEN_FIELD(0x20, 0x1, 0),
+ CLKGEN_FIELD(0x30, 0x1, 0),
+ CLKGEN_FIELD(0x40, 0x1, 0) },
+ .ndiv = CLKGEN_FIELD(0x0, 0x1, 15),
+ .bwfilter_present = true,
+ .ref_bw = CLKGEN_FIELD(0x0, 0x3, 16),
+ .pe = { CLKGEN_FIELD(0x8, 0xffff, 0),
+ CLKGEN_FIELD(0x18, 0xffff, 0),
+ CLKGEN_FIELD(0x28, 0xffff, 0),
+ CLKGEN_FIELD(0x38, 0xffff, 0) },
+ .sdiv = { CLKGEN_FIELD(0xC, 0x7, 0),
+ CLKGEN_FIELD(0x1C, 0x7, 0),
+ CLKGEN_FIELD(0x2C, 0x7, 0),
+ CLKGEN_FIELD(0x3C, 0x7, 0) },
+ .pll_ops = &st_quadfs_pll_c65_ops,
+ .rtbl = fs432c65_rtbl,
+ .rtbl_cnt = ARRAY_SIZE(fs432c65_rtbl),
+ .get_rate = clk_fs432c65_get_rate,
+};
+
+static struct clkgen_quadfs_data st_fs660c32_E_416 = {
+ .npda = CLKGEN_FIELD(0x0, 0x1, 14),
+ .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
+ CLKGEN_FIELD(0x0, 0x1, 11),
+ CLKGEN_FIELD(0x0, 0x1, 12),
+ CLKGEN_FIELD(0x0, 0x1, 13) },
+ .nsdiv_present = true,
+ .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
+ CLKGEN_FIELD(0x0, 0x1, 19),
+ CLKGEN_FIELD(0x0, 0x1, 20),
+ CLKGEN_FIELD(0x0, 0x1, 21) },
+ .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
+ CLKGEN_FIELD(0x14, 0x1f, 0),
+ CLKGEN_FIELD(0x24, 0x1f, 0),
+ CLKGEN_FIELD(0x34, 0x1f, 0) },
+ .en = { CLKGEN_FIELD(0x10, 0x1, 0),
+ CLKGEN_FIELD(0x20, 0x1, 0),
+ CLKGEN_FIELD(0x30, 0x1, 0),
+ CLKGEN_FIELD(0x40, 0x1, 0) },
+ .ndiv = CLKGEN_FIELD(0x0, 0x7, 15),
+ .pe = { CLKGEN_FIELD(0x8, 0x7fff, 0),
+ CLKGEN_FIELD(0x18, 0x7fff, 0),
+ CLKGEN_FIELD(0x28, 0x7fff, 0),
+ CLKGEN_FIELD(0x38, 0x7fff, 0) },
+ .sdiv = { CLKGEN_FIELD(0xC, 0xf, 0),
+ CLKGEN_FIELD(0x1C, 0xf, 0),
+ CLKGEN_FIELD(0x2C, 0xf, 0),
+ CLKGEN_FIELD(0x3C, 0xf, 0) },
+ .lockstatus_present = true,
+ .lock_status = CLKGEN_FIELD(0xAC, 0x1, 0),
+ .pll_ops = &st_quadfs_pll_c32_ops,
+ .rtbl = fs660c32_rtbl,
+ .rtbl_cnt = ARRAY_SIZE(fs660c32_rtbl),
+ .get_rate = clk_fs660c32_dig_get_rate,
+};
+
+static struct clkgen_quadfs_data st_fs660c32_F_416 = {
+ .npda = CLKGEN_FIELD(0x0, 0x1, 14),
+ .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
+ CLKGEN_FIELD(0x0, 0x1, 11),
+ CLKGEN_FIELD(0x0, 0x1, 12),
+ CLKGEN_FIELD(0x0, 0x1, 13) },
+ .nsdiv_present = true,
+ .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
+ CLKGEN_FIELD(0x0, 0x1, 19),
+ CLKGEN_FIELD(0x0, 0x1, 20),
+ CLKGEN_FIELD(0x0, 0x1, 21) },
+ .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
+ CLKGEN_FIELD(0x14, 0x1f, 0),
+ CLKGEN_FIELD(0x24, 0x1f, 0),
+ CLKGEN_FIELD(0x34, 0x1f, 0) },
+ .en = { CLKGEN_FIELD(0x10, 0x1, 0),
+ CLKGEN_FIELD(0x20, 0x1, 0),
+ CLKGEN_FIELD(0x30, 0x1, 0),
+ CLKGEN_FIELD(0x40, 0x1, 0) },
+ .ndiv = CLKGEN_FIELD(0x0, 0x7, 15),
+ .pe = { CLKGEN_FIELD(0x8, 0x7fff, 0),
+ CLKGEN_FIELD(0x18, 0x7fff, 0),
+ CLKGEN_FIELD(0x28, 0x7fff, 0),
+ CLKGEN_FIELD(0x38, 0x7fff, 0) },
+ .sdiv = { CLKGEN_FIELD(0xC, 0xf, 0),
+ CLKGEN_FIELD(0x1C, 0xf, 0),
+ CLKGEN_FIELD(0x2C, 0xf, 0),
+ CLKGEN_FIELD(0x3C, 0xf, 0) },
+ .lockstatus_present = true,
+ .lock_status = CLKGEN_FIELD(0xEC, 0x1, 0),
+ .pll_ops = &st_quadfs_pll_c32_ops,
+ .rtbl = fs660c32_rtbl,
+ .rtbl_cnt = ARRAY_SIZE(fs660c32_rtbl),
+ .get_rate = clk_fs660c32_dig_get_rate,
+};
+
+/**
+ * DOC: A Frequency Synthesizer that multiples its input clock by a fixed factor
+ *
+ * Traits of this clock:
+ * prepare - clk_(un)prepare only ensures parent is (un)prepared
+ * enable - clk_enable and clk_disable are functional & control the Fsyn
+ * rate - inherits rate from parent. set_rate/round_rate/recalc_rate
+ * parent - fixed parent. No clk_set_parent support
+ */
+
+/**
+ * struct st_clk_quadfs_pll - A pll which outputs a fixed multiplier of
+ * its parent clock, found inside a type of
+ * ST quad channel frequency synthesizer block
+ *
+ * @hw: handle between common and hardware-specific interfaces.
+ * @ndiv: regmap field for the ndiv control.
+ * @regs_base: base address of the configuration registers.
+ * @lock: spinlock.
+ *
+ */
+struct st_clk_quadfs_pll {
+ struct clk_hw hw;
+ void __iomem *regs_base;
+ spinlock_t *lock;
+ struct clkgen_quadfs_data *data;
+ u32 ndiv;
+};
+
+#define to_quadfs_pll(_hw) container_of(_hw, struct st_clk_quadfs_pll, hw)
+
+static int quadfs_pll_enable(struct clk_hw *hw)
+{
+ struct st_clk_quadfs_pll *pll = to_quadfs_pll(hw);
+ unsigned long flags = 0, timeout = jiffies + msecs_to_jiffies(10);
+
+ if (pll->lock)
+ spin_lock_irqsave(pll->lock, flags);
+
+ /*
+ * Bring block out of reset if we have reset control.
+ */
+ if (pll->data->reset_present)
+ CLKGEN_WRITE(pll, nreset, 1);
+
+ /*
+ * Use a fixed input clock noise bandwidth filter for the moment
+ */
+ if (pll->data->bwfilter_present)
+ CLKGEN_WRITE(pll, ref_bw, PLL_BW_GOODREF);
+
+
+ CLKGEN_WRITE(pll, ndiv, pll->ndiv);
+
+ /*
+ * Power up the PLL
+ */
+ CLKGEN_WRITE(pll, npda, 1);
+
+ if (pll->lock)
+ spin_unlock_irqrestore(pll->lock, flags);
+
+ if (pll->data->lockstatus_present)
+ while (!CLKGEN_READ(pll, lock_status)) {
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+ cpu_relax();
+ }
+
+ return 0;
+}
+
+static void quadfs_pll_disable(struct clk_hw *hw)
+{
+ struct st_clk_quadfs_pll *pll = to_quadfs_pll(hw);
+ unsigned long flags = 0;
+
+ if (pll->lock)
+ spin_lock_irqsave(pll->lock, flags);
+
+ /*
+ * Powerdown the PLL and then put block into soft reset if we have
+ * reset control.
+ */
+ CLKGEN_WRITE(pll, npda, 0);
+
+ if (pll->data->reset_present)
+ CLKGEN_WRITE(pll, nreset, 0);
+
+ if (pll->lock)
+ spin_unlock_irqrestore(pll->lock, flags);
+}
+
+static int quadfs_pll_is_enabled(struct clk_hw *hw)
+{
+ struct st_clk_quadfs_pll *pll = to_quadfs_pll(hw);
+ u32 npda = CLKGEN_READ(pll, npda);
+
+ return !!npda;
+}
+
+int clk_fs660c32_vco_get_rate(unsigned long input, struct stm_fs *fs,
+ unsigned long *rate)
+{
+ unsigned long nd = fs->ndiv + 16; /* ndiv value */
+
+ *rate = input * nd;
+
+ return 0;
+}
+
+static unsigned long quadfs_pll_fs660c32_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct st_clk_quadfs_pll *pll = to_quadfs_pll(hw);
+ unsigned long rate = 0;
+ struct stm_fs params;
+
+ params.ndiv = CLKGEN_READ(pll, ndiv);
+ if (clk_fs660c32_vco_get_rate(parent_rate, &params, &rate))
+ pr_err("%s:%s error calculating rate\n",
+ __clk_get_name(hw->clk), __func__);
+
+ pll->ndiv = params.ndiv;
+
+ return rate;
+}
+
+int clk_fs660c32_vco_get_params(unsigned long input,
+ unsigned long output, struct stm_fs *fs)
+{
+/* Formula
+ VCO frequency = (fin x ndiv) / pdiv
+ ndiv = VCOfreq * pdiv / fin
+ */
+ unsigned long pdiv = 1, n;
+
+ /* Output clock range: 384Mhz to 660Mhz */
+ if (output < 384000000 || output > 660000000)
+ return -EINVAL;
+
+ if (input > 40000000)
+ /* This means that PDIV would be 2 instead of 1.
+ Not supported today. */
+ return -EINVAL;
+
+ input /= 1000;
+ output /= 1000;
+
+ n = output * pdiv / input;
+ if (n < 16)
+ n = 16;
+ fs->ndiv = n - 16; /* Converting formula value to reg value */
+
+ return 0;
+}
+
+static long quadfs_pll_fs660c32_round_rate(struct clk_hw *hw, unsigned long rate
+ , unsigned long *prate)
+{
+ struct stm_fs params;
+
+ if (!clk_fs660c32_vco_get_params(*prate, rate, &params))
+ clk_fs660c32_vco_get_rate(*prate, &params, &rate);
+
+ pr_debug("%s: %s new rate %ld [sdiv=0x%x,md=0x%x,pe=0x%x,nsdiv3=%u]\n",
+ __func__, __clk_get_name(hw->clk),
+ rate, (unsigned int)params.sdiv,
+ (unsigned int)params.mdiv,
+ (unsigned int)params.pe, (unsigned int)params.nsdiv);
+
+ return rate;
+}
+
+static int quadfs_pll_fs660c32_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct st_clk_quadfs_pll *pll = to_quadfs_pll(hw);
+ struct stm_fs params;
+ long hwrate = 0;
+ unsigned long flags = 0;
+
+ if (!rate || !parent_rate)
+ return -EINVAL;
+
+ if (!clk_fs660c32_vco_get_params(parent_rate, rate, &params))
+ clk_fs660c32_vco_get_rate(parent_rate, &params, &hwrate);
+
+ pr_debug("%s: %s new rate %ld [ndiv=0x%x]\n",
+ __func__, __clk_get_name(hw->clk),
+ hwrate, (unsigned int)params.ndiv);
+
+ if (!hwrate)
+ return -EINVAL;
+
+ pll->ndiv = params.ndiv;
+
+ if (pll->lock)
+ spin_lock_irqsave(pll->lock, flags);
+
+ CLKGEN_WRITE(pll, ndiv, pll->ndiv);
+
+ if (pll->lock)
+ spin_unlock_irqrestore(pll->lock, flags);
+
+ return 0;
+}
+
+static const struct clk_ops st_quadfs_pll_c65_ops = {
+ .enable = quadfs_pll_enable,
+ .disable = quadfs_pll_disable,
+ .is_enabled = quadfs_pll_is_enabled,
+};
+
+static const struct clk_ops st_quadfs_pll_c32_ops = {
+ .enable = quadfs_pll_enable,
+ .disable = quadfs_pll_disable,
+ .is_enabled = quadfs_pll_is_enabled,
+ .recalc_rate = quadfs_pll_fs660c32_recalc_rate,
+ .round_rate = quadfs_pll_fs660c32_round_rate,
+ .set_rate = quadfs_pll_fs660c32_set_rate,
+};
+
+static struct clk * __init st_clk_register_quadfs_pll(
+ const char *name, const char *parent_name,
+ struct clkgen_quadfs_data *quadfs, void __iomem *reg,
+ spinlock_t *lock)
+{
+ struct st_clk_quadfs_pll *pll;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ /*
+ * Sanity check required pointers.
+ */
+ if (WARN_ON(!name || !parent_name))
+ return ERR_PTR(-EINVAL);
+
+ pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+ if (!pll)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = quadfs->pll_ops;
+ init.flags = CLK_IS_BASIC;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ pll->data = quadfs;
+ pll->regs_base = reg;
+ pll->lock = lock;
+ pll->hw.init = &init;
+
+ clk = clk_register(NULL, &pll->hw);
+
+ if (IS_ERR(clk))
+ kfree(pll);
+
+ return clk;
+}
+
+/**
+ * DOC: A digital frequency synthesizer
+ *
+ * Traits of this clock:
+ * prepare - clk_(un)prepare only ensures parent is (un)prepared
+ * enable - clk_enable and clk_disable are functional
+ * rate - set rate is functional
+ * parent - fixed parent. No clk_set_parent support
+ */
+
+/**
+ * struct st_clk_quadfs_fsynth - One clock output from a four channel digital
+ * frequency synthesizer (fsynth) block.
+ *
+ * @hw: handle between common and hardware-specific interfaces
+ *
+ * @nsb: regmap field in the output control register for the digital
+ * standby of this fsynth channel. This control is active low so
+ * the channel is in standby when the control bit is cleared.
+ *
+ * @nsdiv: regmap field in the output control register for
+ * for the optional divide by 3 of this fsynth channel. This control
+ * is active low so the divide by 3 is active when the control bit is
+ * cleared and the divide is bypassed when the bit is set.
+ */
+struct st_clk_quadfs_fsynth {
+ struct clk_hw hw;
+ void __iomem *regs_base;
+ spinlock_t *lock;
+ struct clkgen_quadfs_data *data;
+
+ u32 chan;
+ /*
+ * Cached hardware values from set_rate so we can program the
+ * hardware in enable. There are two reasons for this:
+ *
+ * 1. The registers may not be writable until the parent has been
+ * enabled.
+ *
+ * 2. It restores the clock rate when a driver does an enable
+ * on PM restore, after a suspend to RAM has lost the hardware
+ * setup.
+ */
+ u32 md;
+ u32 pe;
+ u32 sdiv;
+ u32 nsdiv;
+};
+
+#define to_quadfs_fsynth(_hw) \
+ container_of(_hw, struct st_clk_quadfs_fsynth, hw)
+
+static void quadfs_fsynth_program_enable(struct st_clk_quadfs_fsynth *fs)
+{
+ /*
+ * Pulse the program enable register lsb to make the hardware take
+ * notice of the new md/pe values with a glitchless transition.
+ */
+ CLKGEN_WRITE(fs, en[fs->chan], 1);
+ CLKGEN_WRITE(fs, en[fs->chan], 0);
+}
+
+static void quadfs_fsynth_program_rate(struct st_clk_quadfs_fsynth *fs)
+{
+ unsigned long flags = 0;
+
+ /*
+ * Ensure the md/pe parameters are ignored while we are
+ * reprogramming them so we can get a glitchless change
+ * when fine tuning the speed of a running clock.
+ */
+ CLKGEN_WRITE(fs, en[fs->chan], 0);
+
+ CLKGEN_WRITE(fs, mdiv[fs->chan], fs->md);
+ CLKGEN_WRITE(fs, pe[fs->chan], fs->pe);
+ CLKGEN_WRITE(fs, sdiv[fs->chan], fs->sdiv);
+
+ if (fs->lock)
+ spin_lock_irqsave(fs->lock, flags);
+
+ if (fs->data->nsdiv_present)
+ CLKGEN_WRITE(fs, nsdiv[fs->chan], fs->nsdiv);
+
+ if (fs->lock)
+ spin_unlock_irqrestore(fs->lock, flags);
+}
+
+static int quadfs_fsynth_enable(struct clk_hw *hw)
+{
+ struct st_clk_quadfs_fsynth *fs = to_quadfs_fsynth(hw);
+ unsigned long flags = 0;
+
+ pr_debug("%s: %s\n", __func__, __clk_get_name(hw->clk));
+
+ quadfs_fsynth_program_rate(fs);
+
+ if (fs->lock)
+ spin_lock_irqsave(fs->lock, flags);
+
+ CLKGEN_WRITE(fs, nsb[fs->chan], 1);
+
+ if (fs->lock)
+ spin_unlock_irqrestore(fs->lock, flags);
+
+ quadfs_fsynth_program_enable(fs);
+
+ return 0;
+}
+
+static void quadfs_fsynth_disable(struct clk_hw *hw)
+{
+ struct st_clk_quadfs_fsynth *fs = to_quadfs_fsynth(hw);
+ unsigned long flags = 0;
+
+ pr_debug("%s: %s\n", __func__, __clk_get_name(hw->clk));
+
+ if (fs->lock)
+ spin_lock_irqsave(fs->lock, flags);
+
+ CLKGEN_WRITE(fs, nsb[fs->chan], 0);
+
+ if (fs->lock)
+ spin_unlock_irqrestore(fs->lock, flags);
+}
+
+static int quadfs_fsynth_is_enabled(struct clk_hw *hw)
+{
+ struct st_clk_quadfs_fsynth *fs = to_quadfs_fsynth(hw);
+ u32 nsb = CLKGEN_READ(fs, nsb[fs->chan]);
+
+ pr_debug("%s: %s enable bit = 0x%x\n",
+ __func__, __clk_get_name(hw->clk), nsb);
+
+ return !!nsb;
+}
+
+#define P15 (uint64_t)(1 << 15)
+
+static int clk_fs216c65_get_rate(unsigned long input, struct stm_fs *fs,
+ unsigned long *rate)
+{
+ uint64_t res;
+ unsigned long ns;
+ unsigned long nd = 8; /* ndiv stuck at 0 => val = 8 */
+ unsigned long s;
+ long m;
+
+ m = fs->mdiv - 32;
+ s = 1 << (fs->sdiv + 1);
+ ns = (fs->nsdiv ? 1 : 3);
+
+ res = (uint64_t)(s * ns * P15 * (uint64_t)(m + 33));
+ res = res - (s * ns * fs->pe);
+ *rate = div64_u64(P15 * nd * input * 32, res);
+
+ return 0;
+}
+
+static int clk_fs432c65_get_rate(unsigned long input, struct stm_fs *fs,
+ unsigned long *rate)
+{
+ uint64_t res;
+ unsigned long nd = 16; /* ndiv value; stuck at 0 (30Mhz input) */
+ long m;
+ unsigned long sd;
+ unsigned long ns;
+
+ m = fs->mdiv - 32;
+ sd = 1 << (fs->sdiv + 1);
+ ns = (fs->nsdiv ? 1 : 3);
+
+ res = (uint64_t)(sd * ns * P15 * (uint64_t)(m + 33));
+ res = res - (sd * ns * fs->pe);
+ *rate = div64_u64(P15 * nd * input * 32, res);
+
+ return 0;
+}
+
+#define P20 (uint64_t)(1 << 20)
+
+static int clk_fs660c32_dig_get_rate(unsigned long input,
+ struct stm_fs *fs, unsigned long *rate)
+{
+ unsigned long s = (1 << fs->sdiv);
+ unsigned long ns;
+ uint64_t res;
+
+ /*
+ * 'nsdiv' is a register value ('BIN') which is translated
+ * to a decimal value according to following rules.
+ *
+ * nsdiv ns.dec
+ * 0 3
+ * 1 1
+ */
+ ns = (fs->nsdiv == 1) ? 1 : 3;
+
+ res = (P20 * (32 + fs->mdiv) + 32 * fs->pe) * s * ns;
+ *rate = (unsigned long)div64_u64(input * P20 * 32, res);
+
+ return 0;
+}
+
+static int quadfs_fsynt_get_hw_value_for_recalc(struct st_clk_quadfs_fsynth *fs,
+ struct stm_fs *params)
+{
+ /*
+ * Get the initial hardware values for recalc_rate
+ */
+ params->mdiv = CLKGEN_READ(fs, mdiv[fs->chan]);
+ params->pe = CLKGEN_READ(fs, pe[fs->chan]);
+ params->sdiv = CLKGEN_READ(fs, sdiv[fs->chan]);
+
+ if (fs->data->nsdiv_present)
+ params->nsdiv = CLKGEN_READ(fs, nsdiv[fs->chan]);
+ else
+ params->nsdiv = 1;
+
+ /*
+ * If All are NULL then assume no clock rate is programmed.
+ */
+ if (!params->mdiv && !params->pe && !params->sdiv)
+ return 1;
+
+ fs->md = params->mdiv;
+ fs->pe = params->pe;
+ fs->sdiv = params->sdiv;
+ fs->nsdiv = params->nsdiv;
+
+ return 0;
+}
+
+static long quadfs_find_best_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate, struct stm_fs *params)
+{
+ struct st_clk_quadfs_fsynth *fs = to_quadfs_fsynth(hw);
+ int (*clk_fs_get_rate)(unsigned long ,
+ struct stm_fs *, unsigned long *);
+ struct stm_fs prev_params;
+ unsigned long prev_rate, rate = 0;
+ unsigned long diff_rate, prev_diff_rate = ~0;
+ int index;
+
+ clk_fs_get_rate = fs->data->get_rate;
+
+ for (index = 0; index < fs->data->rtbl_cnt; index++) {
+ prev_rate = rate;
+
+ *params = fs->data->rtbl[index];
+ prev_params = *params;
+
+ clk_fs_get_rate(prate, &fs->data->rtbl[index], &rate);
+
+ diff_rate = abs(drate - rate);
+
+ if (diff_rate > prev_diff_rate) {
+ rate = prev_rate;
+ *params = prev_params;
+ break;
+ }
+
+ prev_diff_rate = diff_rate;
+
+ if (drate == rate)
+ return rate;
+ }
+
+
+ if (index == fs->data->rtbl_cnt)
+ *params = prev_params;
+
+ return rate;
+}
+
+static unsigned long quadfs_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct st_clk_quadfs_fsynth *fs = to_quadfs_fsynth(hw);
+ unsigned long rate = 0;
+ struct stm_fs params;
+ int (*clk_fs_get_rate)(unsigned long ,
+ struct stm_fs *, unsigned long *);
+
+ clk_fs_get_rate = fs->data->get_rate;
+
+ if (quadfs_fsynt_get_hw_value_for_recalc(fs, &params))
+ return 0;
+
+ if (clk_fs_get_rate(parent_rate, &params, &rate)) {
+ pr_err("%s:%s error calculating rate\n",
+ __clk_get_name(hw->clk), __func__);
+ }
+
+ pr_debug("%s:%s rate %lu\n", __clk_get_name(hw->clk), __func__, rate);
+
+ return rate;
+}
+
+static long quadfs_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct stm_fs params;
+
+ rate = quadfs_find_best_rate(hw, rate, *prate, &params);
+
+ pr_debug("%s: %s new rate %ld [sdiv=0x%x,md=0x%x,pe=0x%x,nsdiv3=%u]\n",
+ __func__, __clk_get_name(hw->clk),
+ rate, (unsigned int)params.sdiv, (unsigned int)params.mdiv,
+ (unsigned int)params.pe, (unsigned int)params.nsdiv);
+
+ return rate;
+}
+
+
+static void quadfs_program_and_enable(struct st_clk_quadfs_fsynth *fs,
+ struct stm_fs *params)
+{
+ fs->md = params->mdiv;
+ fs->pe = params->pe;
+ fs->sdiv = params->sdiv;
+ fs->nsdiv = params->nsdiv;
+
+ /*
+ * In some integrations you can only change the fsynth programming when
+ * the parent entity containing it is enabled.
+ */
+ quadfs_fsynth_program_rate(fs);
+ quadfs_fsynth_program_enable(fs);
+}
+
+static int quadfs_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct st_clk_quadfs_fsynth *fs = to_quadfs_fsynth(hw);
+ struct stm_fs params;
+ long hwrate;
+ int uninitialized_var(i);
+
+ if (!rate || !parent_rate)
+ return -EINVAL;
+
+ memset(&params, 0, sizeof(struct stm_fs));
+
+ hwrate = quadfs_find_best_rate(hw, rate, parent_rate, &params);
+ if (!hwrate)
+ return -EINVAL;
+
+ quadfs_program_and_enable(fs, &params);
+
+ return 0;
+}
+
+
+
+static const struct clk_ops st_quadfs_ops = {
+ .enable = quadfs_fsynth_enable,
+ .disable = quadfs_fsynth_disable,
+ .is_enabled = quadfs_fsynth_is_enabled,
+ .round_rate = quadfs_round_rate,
+ .set_rate = quadfs_set_rate,
+ .recalc_rate = quadfs_recalc_rate,
+};
+
+static struct clk * __init st_clk_register_quadfs_fsynth(
+ const char *name, const char *parent_name,
+ struct clkgen_quadfs_data *quadfs, void __iomem *reg, u32 chan,
+ spinlock_t *lock)
+{
+ struct st_clk_quadfs_fsynth *fs;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ /*
+ * Sanity check required pointers, note that nsdiv3 is optional.
+ */
+ if (WARN_ON(!name || !parent_name))
+ return ERR_PTR(-EINVAL);
+
+ fs = kzalloc(sizeof(*fs), GFP_KERNEL);
+ if (!fs)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &st_quadfs_ops;
+ init.flags = CLK_GET_RATE_NOCACHE | CLK_IS_BASIC;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ fs->data = quadfs;
+ fs->regs_base = reg;
+ fs->chan = chan;
+ fs->lock = lock;
+ fs->hw.init = &init;
+
+ clk = clk_register(NULL, &fs->hw);
+
+ if (IS_ERR(clk))
+ kfree(fs);
+
+ return clk;
+}
+
+static struct of_device_id quadfs_of_match[] = {
+ {
+ .compatible = "st,stih416-quadfs216",
+ .data = (void *)&st_fs216c65_416
+ },
+ {
+ .compatible = "st,stih416-quadfs432",
+ .data = (void *)&st_fs432c65_416
+ },
+ {
+ .compatible = "st,stih416-quadfs660-E",
+ .data = (void *)&st_fs660c32_E_416
+ },
+ {
+ .compatible = "st,stih416-quadfs660-F",
+ .data = (void *)&st_fs660c32_F_416
+ },
+ {}
+};
+
+static void __init st_of_create_quadfs_fsynths(
+ struct device_node *np, const char *pll_name,
+ struct clkgen_quadfs_data *quadfs, void __iomem *reg,
+ spinlock_t *lock)
+{
+ struct clk_onecell_data *clk_data;
+ int fschan;
+
+ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ return;
+
+ clk_data->clk_num = QUADFS_MAX_CHAN;
+ clk_data->clks = kzalloc(QUADFS_MAX_CHAN * sizeof(struct clk *),
+ GFP_KERNEL);
+
+ if (!clk_data->clks) {
+ kfree(clk_data);
+ return;
+ }
+
+ for (fschan = 0; fschan < QUADFS_MAX_CHAN; fschan++) {
+ struct clk *clk;
+ const char *clk_name;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ fschan, &clk_name)) {
+ break;
+ }
+
+ /*
+ * If we read an empty clock name then the channel is unused
+ */
+ if (*clk_name == '\0')
+ continue;
+
+ clk = st_clk_register_quadfs_fsynth(clk_name, pll_name,
+ quadfs, reg, fschan, lock);
+
+ /*
+ * If there was an error registering this clock output, clean
+ * up and move on to the next one.
+ */
+ if (!IS_ERR(clk)) {
+ clk_data->clks[fschan] = clk;
+ pr_debug("%s: parent %s rate %u\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ (unsigned int)clk_get_rate(clk));
+ }
+ }
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
+}
+
+static void __init st_of_quadfs_setup(struct device_node *np)
+{
+ const struct of_device_id *match;
+ struct clk *clk;
+ const char *pll_name, *clk_parent_name;
+ void __iomem *reg;
+ spinlock_t *lock;
+
+ match = of_match_node(quadfs_of_match, np);
+ if (WARN_ON(!match))
+ return;
+
+ reg = of_iomap(np, 0);
+ if (!reg)
+ return;
+
+ clk_parent_name = of_clk_get_parent_name(np, 0);
+ if (!clk_parent_name)
+ return;
+
+ pll_name = kasprintf(GFP_KERNEL, "%s.pll", np->name);
+ if (!pll_name)
+ return;
+
+ lock = kzalloc(sizeof(*lock), GFP_KERNEL);
+ if (!lock)
+ goto err_exit;
+
+ spin_lock_init(lock);
+
+ clk = st_clk_register_quadfs_pll(pll_name, clk_parent_name,
+ (struct clkgen_quadfs_data *) match->data, reg, lock);
+ if (IS_ERR(clk))
+ goto err_exit;
+ else
+ pr_debug("%s: parent %s rate %u\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ (unsigned int)clk_get_rate(clk));
+
+ st_of_create_quadfs_fsynths(np, pll_name,
+ (struct clkgen_quadfs_data *)match->data,
+ reg, lock);
+
+err_exit:
+ kfree(pll_name); /* No longer need local copy of the PLL name */
+}
+CLK_OF_DECLARE(quadfs, "st,quadfs", st_of_quadfs_setup);
diff --git a/drivers/clk/st/clkgen-mux.c b/drivers/clk/st/clkgen-mux.c
new file mode 100644
index 000000000000..a329906d1e81
--- /dev/null
+++ b/drivers/clk/st/clkgen-mux.c
@@ -0,0 +1,820 @@
+/*
+ * clkgen-mux.c: ST GEN-MUX Clock driver
+ *
+ * Copyright (C) 2014 STMicroelectronics (R&D) Limited
+ *
+ * Authors: Stephen Gallimore <stephen.gallimore@st.com>
+ * Pankaj Dev <pankaj.dev@st.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/of_address.h>
+#include <linux/clk-provider.h>
+
+static DEFINE_SPINLOCK(clkgena_divmux_lock);
+static DEFINE_SPINLOCK(clkgenf_lock);
+
+static const char ** __init clkgen_mux_get_parents(struct device_node *np,
+ int *num_parents)
+{
+ const char **parents;
+ int nparents, i;
+
+ nparents = of_count_phandle_with_args(np, "clocks", "#clock-cells");
+ if (WARN_ON(nparents <= 0))
+ return ERR_PTR(-EINVAL);
+
+ parents = kzalloc(nparents * sizeof(const char *), GFP_KERNEL);
+ if (!parents)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < nparents; i++)
+ parents[i] = of_clk_get_parent_name(np, i);
+
+ *num_parents = nparents;
+ return parents;
+}
+
+/**
+ * DOC: Clock mux with a programmable divider on each of its three inputs.
+ * The mux has an input setting which effectively gates its output.
+ *
+ * Traits of this clock:
+ * prepare - clk_(un)prepare only ensures parent is (un)prepared
+ * enable - clk_enable and clk_disable are functional & control gating
+ * rate - set rate is supported
+ * parent - set/get parent
+ */
+
+#define NUM_INPUTS 3
+
+struct clkgena_divmux {
+ struct clk_hw hw;
+ /* Subclassed mux and divider structures */
+ struct clk_mux mux;
+ struct clk_divider div[NUM_INPUTS];
+ /* Enable/running feedback register bits for each input */
+ void __iomem *feedback_reg[NUM_INPUTS];
+ int feedback_bit_idx;
+
+ u8 muxsel;
+};
+
+#define to_clkgena_divmux(_hw) container_of(_hw, struct clkgena_divmux, hw)
+
+struct clkgena_divmux_data {
+ int num_outputs;
+ int mux_offset;
+ int mux_offset2;
+ int mux_start_bit;
+ int div_offsets[NUM_INPUTS];
+ int fb_offsets[NUM_INPUTS];
+ int fb_start_bit_idx;
+};
+
+#define CKGAX_CLKOPSRC_SWITCH_OFF 0x3
+
+static int clkgena_divmux_is_running(struct clkgena_divmux *mux)
+{
+ u32 regval = readl(mux->feedback_reg[mux->muxsel]);
+ u32 running = regval & BIT(mux->feedback_bit_idx);
+ return !!running;
+}
+
+static int clkgena_divmux_enable(struct clk_hw *hw)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+ struct clk_hw *mux_hw = &genamux->mux.hw;
+ unsigned long timeout;
+ int ret = 0;
+
+ mux_hw->clk = hw->clk;
+
+ ret = clk_mux_ops.set_parent(mux_hw, genamux->muxsel);
+ if (ret)
+ return ret;
+
+ timeout = jiffies + msecs_to_jiffies(10);
+
+ while (!clkgena_divmux_is_running(genamux)) {
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+ cpu_relax();
+ }
+
+ return 0;
+}
+
+static void clkgena_divmux_disable(struct clk_hw *hw)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+ struct clk_hw *mux_hw = &genamux->mux.hw;
+
+ mux_hw->clk = hw->clk;
+
+ clk_mux_ops.set_parent(mux_hw, CKGAX_CLKOPSRC_SWITCH_OFF);
+}
+
+static int clkgena_divmux_is_enabled(struct clk_hw *hw)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+ struct clk_hw *mux_hw = &genamux->mux.hw;
+
+ mux_hw->clk = hw->clk;
+
+ return (s8)clk_mux_ops.get_parent(mux_hw) > 0;
+}
+
+u8 clkgena_divmux_get_parent(struct clk_hw *hw)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+ struct clk_hw *mux_hw = &genamux->mux.hw;
+
+ mux_hw->clk = hw->clk;
+
+ genamux->muxsel = clk_mux_ops.get_parent(mux_hw);
+ if ((s8)genamux->muxsel < 0) {
+ pr_debug("%s: %s: Invalid parent, setting to default.\n",
+ __func__, __clk_get_name(hw->clk));
+ genamux->muxsel = 0;
+ }
+
+ return genamux->muxsel;
+}
+
+static int clkgena_divmux_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+
+ if (index >= CKGAX_CLKOPSRC_SWITCH_OFF)
+ return -EINVAL;
+
+ genamux->muxsel = index;
+
+ /*
+ * If the mux is already enabled, call enable directly to set the
+ * new mux position and wait for it to start running again. Otherwise
+ * do nothing.
+ */
+ if (clkgena_divmux_is_enabled(hw))
+ clkgena_divmux_enable(hw);
+
+ return 0;
+}
+
+unsigned long clkgena_divmux_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+ struct clk_hw *div_hw = &genamux->div[genamux->muxsel].hw;
+
+ div_hw->clk = hw->clk;
+
+ return clk_divider_ops.recalc_rate(div_hw, parent_rate);
+}
+
+static int clkgena_divmux_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+ struct clk_hw *div_hw = &genamux->div[genamux->muxsel].hw;
+
+ div_hw->clk = hw->clk;
+
+ return clk_divider_ops.set_rate(div_hw, rate, parent_rate);
+}
+
+static long clkgena_divmux_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct clkgena_divmux *genamux = to_clkgena_divmux(hw);
+ struct clk_hw *div_hw = &genamux->div[genamux->muxsel].hw;
+
+ div_hw->clk = hw->clk;
+
+ return clk_divider_ops.round_rate(div_hw, rate, prate);
+}
+
+static const struct clk_ops clkgena_divmux_ops = {
+ .enable = clkgena_divmux_enable,
+ .disable = clkgena_divmux_disable,
+ .is_enabled = clkgena_divmux_is_enabled,
+ .get_parent = clkgena_divmux_get_parent,
+ .set_parent = clkgena_divmux_set_parent,
+ .round_rate = clkgena_divmux_round_rate,
+ .recalc_rate = clkgena_divmux_recalc_rate,
+ .set_rate = clkgena_divmux_set_rate,
+};
+
+/**
+ * clk_register_genamux - register a genamux clock with the clock framework
+ */
+struct clk *clk_register_genamux(const char *name,
+ const char **parent_names, u8 num_parents,
+ void __iomem *reg,
+ const struct clkgena_divmux_data *muxdata,
+ u32 idx)
+{
+ /*
+ * Fixed constants across all ClockgenA variants
+ */
+ const int mux_width = 2;
+ const int divider_width = 5;
+ struct clkgena_divmux *genamux;
+ struct clk *clk;
+ struct clk_init_data init;
+ int i;
+
+ genamux = kzalloc(sizeof(*genamux), GFP_KERNEL);
+ if (!genamux)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &clkgena_divmux_ops;
+ init.flags = CLK_IS_BASIC;
+ init.parent_names = parent_names;
+ init.num_parents = num_parents;
+
+ genamux->mux.lock = &clkgena_divmux_lock;
+ genamux->mux.mask = BIT(mux_width) - 1;
+ genamux->mux.shift = muxdata->mux_start_bit + (idx * mux_width);
+ if (genamux->mux.shift > 31) {
+ /*
+ * We have spilled into the second mux register so
+ * adjust the register address and the bit shift accordingly
+ */
+ genamux->mux.reg = reg + muxdata->mux_offset2;
+ genamux->mux.shift -= 32;
+ } else {
+ genamux->mux.reg = reg + muxdata->mux_offset;
+ }
+
+ for (i = 0; i < NUM_INPUTS; i++) {
+ /*
+ * Divider config for each input
+ */
+ void __iomem *divbase = reg + muxdata->div_offsets[i];
+ genamux->div[i].width = divider_width;
+ genamux->div[i].reg = divbase + (idx * sizeof(u32));
+
+ /*
+ * Mux enabled/running feedback register for each input.
+ */
+ genamux->feedback_reg[i] = reg + muxdata->fb_offsets[i];
+ }
+
+ genamux->feedback_bit_idx = muxdata->fb_start_bit_idx + idx;
+ genamux->hw.init = &init;
+
+ clk = clk_register(NULL, &genamux->hw);
+ if (IS_ERR(clk)) {
+ kfree(genamux);
+ goto err;
+ }
+
+ pr_debug("%s: parent %s rate %lu\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ clk_get_rate(clk));
+err:
+ return clk;
+}
+
+static struct clkgena_divmux_data st_divmux_c65hs = {
+ .num_outputs = 4,
+ .mux_offset = 0x14,
+ .mux_start_bit = 0,
+ .div_offsets = { 0x800, 0x900, 0xb00 },
+ .fb_offsets = { 0x18, 0x1c, 0x20 },
+ .fb_start_bit_idx = 0,
+};
+
+static struct clkgena_divmux_data st_divmux_c65ls = {
+ .num_outputs = 14,
+ .mux_offset = 0x14,
+ .mux_offset2 = 0x24,
+ .mux_start_bit = 8,
+ .div_offsets = { 0x810, 0xa10, 0xb10 },
+ .fb_offsets = { 0x18, 0x1c, 0x20 },
+ .fb_start_bit_idx = 4,
+};
+
+static struct clkgena_divmux_data st_divmux_c32odf0 = {
+ .num_outputs = 8,
+ .mux_offset = 0x1c,
+ .mux_start_bit = 0,
+ .div_offsets = { 0x800, 0x900, 0xa60 },
+ .fb_offsets = { 0x2c, 0x24, 0x28 },
+ .fb_start_bit_idx = 0,
+};
+
+static struct clkgena_divmux_data st_divmux_c32odf1 = {
+ .num_outputs = 8,
+ .mux_offset = 0x1c,
+ .mux_start_bit = 16,
+ .div_offsets = { 0x820, 0x980, 0xa80 },
+ .fb_offsets = { 0x2c, 0x24, 0x28 },
+ .fb_start_bit_idx = 8,
+};
+
+static struct clkgena_divmux_data st_divmux_c32odf2 = {
+ .num_outputs = 8,
+ .mux_offset = 0x20,
+ .mux_start_bit = 0,
+ .div_offsets = { 0x840, 0xa20, 0xb10 },
+ .fb_offsets = { 0x2c, 0x24, 0x28 },
+ .fb_start_bit_idx = 16,
+};
+
+static struct clkgena_divmux_data st_divmux_c32odf3 = {
+ .num_outputs = 8,
+ .mux_offset = 0x20,
+ .mux_start_bit = 16,
+ .div_offsets = { 0x860, 0xa40, 0xb30 },
+ .fb_offsets = { 0x2c, 0x24, 0x28 },
+ .fb_start_bit_idx = 24,
+};
+
+static struct of_device_id clkgena_divmux_of_match[] = {
+ {
+ .compatible = "st,clkgena-divmux-c65-hs",
+ .data = &st_divmux_c65hs,
+ },
+ {
+ .compatible = "st,clkgena-divmux-c65-ls",
+ .data = &st_divmux_c65ls,
+ },
+ {
+ .compatible = "st,clkgena-divmux-c32-odf0",
+ .data = &st_divmux_c32odf0,
+ },
+ {
+ .compatible = "st,clkgena-divmux-c32-odf1",
+ .data = &st_divmux_c32odf1,
+ },
+ {
+ .compatible = "st,clkgena-divmux-c32-odf2",
+ .data = &st_divmux_c32odf2,
+ },
+ {
+ .compatible = "st,clkgena-divmux-c32-odf3",
+ .data = &st_divmux_c32odf3,
+ },
+ {}
+};
+
+static void __iomem * __init clkgen_get_register_base(
+ struct device_node *np)
+{
+ struct device_node *pnode;
+ void __iomem *reg = NULL;
+
+ pnode = of_get_parent(np);
+ if (!pnode)
+ return NULL;
+
+ reg = of_iomap(pnode, 0);
+
+ of_node_put(pnode);
+ return reg;
+}
+
+void __init st_of_clkgena_divmux_setup(struct device_node *np)
+{
+ const struct of_device_id *match;
+ const struct clkgena_divmux_data *data;
+ struct clk_onecell_data *clk_data;
+ void __iomem *reg;
+ const char **parents;
+ int num_parents = 0, i;
+
+ match = of_match_node(clkgena_divmux_of_match, np);
+ if (WARN_ON(!match))
+ return;
+
+ data = (struct clkgena_divmux_data *)match->data;
+
+ reg = clkgen_get_register_base(np);
+ if (!reg)
+ return;
+
+ parents = clkgen_mux_get_parents(np, &num_parents);
+ if (IS_ERR(parents))
+ return;
+
+ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ goto err;
+
+ clk_data->clk_num = data->num_outputs;
+ clk_data->clks = kzalloc(clk_data->clk_num * sizeof(struct clk *),
+ GFP_KERNEL);
+
+ if (!clk_data->clks)
+ goto err;
+
+ for (i = 0; i < clk_data->clk_num; i++) {
+ struct clk *clk;
+ const char *clk_name;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ i, &clk_name))
+ break;
+
+ /*
+ * If we read an empty clock name then the output is unused
+ */
+ if (*clk_name == '\0')
+ continue;
+
+ clk = clk_register_genamux(clk_name, parents, num_parents,
+ reg, data, i);
+
+ if (IS_ERR(clk))
+ goto err;
+
+ clk_data->clks[i] = clk;
+ }
+
+ kfree(parents);
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
+ return;
+err:
+ if (clk_data)
+ kfree(clk_data->clks);
+
+ kfree(clk_data);
+ kfree(parents);
+}
+CLK_OF_DECLARE(clkgenadivmux, "st,clkgena-divmux", st_of_clkgena_divmux_setup);
+
+struct clkgena_prediv_data {
+ u32 offset;
+ u8 shift;
+ struct clk_div_table *table;
+};
+
+static struct clk_div_table prediv_table16[] = {
+ { .val = 0, .div = 1 },
+ { .val = 1, .div = 16 },
+ { .div = 0 },
+};
+
+static struct clkgena_prediv_data prediv_c65_data = {
+ .offset = 0x4c,
+ .shift = 31,
+ .table = prediv_table16,
+};
+
+static struct clkgena_prediv_data prediv_c32_data = {
+ .offset = 0x50,
+ .shift = 1,
+ .table = prediv_table16,
+};
+
+static struct of_device_id clkgena_prediv_of_match[] = {
+ { .compatible = "st,clkgena-prediv-c65", .data = &prediv_c65_data },
+ { .compatible = "st,clkgena-prediv-c32", .data = &prediv_c32_data },
+ {}
+};
+
+void __init st_of_clkgena_prediv_setup(struct device_node *np)
+{
+ const struct of_device_id *match;
+ void __iomem *reg;
+ const char *parent_name, *clk_name;
+ struct clk *clk;
+ struct clkgena_prediv_data *data;
+
+ match = of_match_node(clkgena_prediv_of_match, np);
+ if (!match) {
+ pr_err("%s: No matching data\n", __func__);
+ return;
+ }
+
+ data = (struct clkgena_prediv_data *)match->data;
+
+ reg = clkgen_get_register_base(np);
+ if (!reg)
+ return;
+
+ parent_name = of_clk_get_parent_name(np, 0);
+ if (!parent_name)
+ return;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ 0, &clk_name))
+ return;
+
+ clk = clk_register_divider_table(NULL, clk_name, parent_name, 0,
+ reg + data->offset, data->shift, 1,
+ 0, data->table, NULL);
+ if (IS_ERR(clk))
+ return;
+
+ of_clk_add_provider(np, of_clk_src_simple_get, clk);
+ pr_debug("%s: parent %s rate %u\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ (unsigned int)clk_get_rate(clk));
+
+ return;
+}
+CLK_OF_DECLARE(clkgenaprediv, "st,clkgena-prediv", st_of_clkgena_prediv_setup);
+
+struct clkgen_mux_data {
+ u32 offset;
+ u8 shift;
+ u8 width;
+ spinlock_t *lock;
+ unsigned long clk_flags;
+ u8 mux_flags;
+};
+
+static struct clkgen_mux_data clkgen_mux_c_vcc_hd_416 = {
+ .offset = 0,
+ .shift = 0,
+ .width = 1,
+};
+
+static struct clkgen_mux_data clkgen_mux_f_vcc_fvdp_416 = {
+ .offset = 0,
+ .shift = 0,
+ .width = 1,
+};
+
+static struct clkgen_mux_data clkgen_mux_f_vcc_hva_416 = {
+ .offset = 0,
+ .shift = 0,
+ .width = 1,
+};
+
+static struct clkgen_mux_data clkgen_mux_f_vcc_hd_416 = {
+ .offset = 0,
+ .shift = 16,
+ .width = 1,
+ .lock = &clkgenf_lock,
+};
+
+static struct clkgen_mux_data clkgen_mux_c_vcc_sd_416 = {
+ .offset = 0,
+ .shift = 17,
+ .width = 1,
+ .lock = &clkgenf_lock,
+};
+
+static struct clkgen_mux_data stih415_a9_mux_data = {
+ .offset = 0,
+ .shift = 1,
+ .width = 2,
+};
+static struct clkgen_mux_data stih416_a9_mux_data = {
+ .offset = 0,
+ .shift = 0,
+ .width = 2,
+};
+
+static struct of_device_id mux_of_match[] = {
+ {
+ .compatible = "st,stih416-clkgenc-vcc-hd",
+ .data = &clkgen_mux_c_vcc_hd_416,
+ },
+ {
+ .compatible = "st,stih416-clkgenf-vcc-fvdp",
+ .data = &clkgen_mux_f_vcc_fvdp_416,
+ },
+ {
+ .compatible = "st,stih416-clkgenf-vcc-hva",
+ .data = &clkgen_mux_f_vcc_hva_416,
+ },
+ {
+ .compatible = "st,stih416-clkgenf-vcc-hd",
+ .data = &clkgen_mux_f_vcc_hd_416,
+ },
+ {
+ .compatible = "st,stih416-clkgenf-vcc-sd",
+ .data = &clkgen_mux_c_vcc_sd_416,
+ },
+ {
+ .compatible = "st,stih415-clkgen-a9-mux",
+ .data = &stih415_a9_mux_data,
+ },
+ {
+ .compatible = "st,stih416-clkgen-a9-mux",
+ .data = &stih416_a9_mux_data,
+ },
+ {}
+};
+
+void __init st_of_clkgen_mux_setup(struct device_node *np)
+{
+ const struct of_device_id *match;
+ struct clk *clk;
+ void __iomem *reg;
+ const char **parents;
+ int num_parents;
+ struct clkgen_mux_data *data;
+
+ match = of_match_node(mux_of_match, np);
+ if (!match) {
+ pr_err("%s: No matching data\n", __func__);
+ return;
+ }
+
+ data = (struct clkgen_mux_data *)match->data;
+
+ reg = of_iomap(np, 0);
+ if (!reg) {
+ pr_err("%s: Failed to get base address\n", __func__);
+ return;
+ }
+
+ parents = clkgen_mux_get_parents(np, &num_parents);
+ if (IS_ERR(parents)) {
+ pr_err("%s: Failed to get parents (%ld)\n",
+ __func__, PTR_ERR(parents));
+ return;
+ }
+
+ clk = clk_register_mux(NULL, np->name, parents, num_parents,
+ data->clk_flags | CLK_SET_RATE_PARENT,
+ reg + data->offset,
+ data->shift, data->width, data->mux_flags,
+ data->lock);
+ if (IS_ERR(clk))
+ goto err;
+
+ pr_debug("%s: parent %s rate %u\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ (unsigned int)clk_get_rate(clk));
+
+ of_clk_add_provider(np, of_clk_src_simple_get, clk);
+
+err:
+ kfree(parents);
+
+ return;
+}
+CLK_OF_DECLARE(clkgen_mux, "st,clkgen-mux", st_of_clkgen_mux_setup);
+
+#define VCC_MAX_CHANNELS 16
+
+#define VCC_GATE_OFFSET 0x0
+#define VCC_MUX_OFFSET 0x4
+#define VCC_DIV_OFFSET 0x8
+
+struct clkgen_vcc_data {
+ spinlock_t *lock;
+ unsigned long clk_flags;
+};
+
+static struct clkgen_vcc_data st_clkgenc_vcc_416 = {
+ .clk_flags = CLK_SET_RATE_PARENT,
+};
+
+static struct clkgen_vcc_data st_clkgenf_vcc_416 = {
+ .lock = &clkgenf_lock,
+};
+
+static struct of_device_id vcc_of_match[] = {
+ { .compatible = "st,stih416-clkgenc", .data = &st_clkgenc_vcc_416 },
+ { .compatible = "st,stih416-clkgenf", .data = &st_clkgenf_vcc_416 },
+ {}
+};
+
+void __init st_of_clkgen_vcc_setup(struct device_node *np)
+{
+ const struct of_device_id *match;
+ void __iomem *reg;
+ const char **parents;
+ int num_parents, i;
+ struct clk_onecell_data *clk_data;
+ struct clkgen_vcc_data *data;
+
+ match = of_match_node(vcc_of_match, np);
+ if (WARN_ON(!match))
+ return;
+ data = (struct clkgen_vcc_data *)match->data;
+
+ reg = of_iomap(np, 0);
+ if (!reg)
+ return;
+
+ parents = clkgen_mux_get_parents(np, &num_parents);
+ if (IS_ERR(parents))
+ return;
+
+ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ goto err;
+
+ clk_data->clk_num = VCC_MAX_CHANNELS;
+ clk_data->clks = kzalloc(clk_data->clk_num * sizeof(struct clk *),
+ GFP_KERNEL);
+
+ if (!clk_data->clks)
+ goto err;
+
+ for (i = 0; i < clk_data->clk_num; i++) {
+ struct clk *clk;
+ const char *clk_name;
+ struct clk_gate *gate;
+ struct clk_divider *div;
+ struct clk_mux *mux;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ i, &clk_name))
+ break;
+
+ /*
+ * If we read an empty clock name then the output is unused
+ */
+ if (*clk_name == '\0')
+ continue;
+
+ gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL);
+ if (!gate)
+ break;
+
+ div = kzalloc(sizeof(struct clk_divider), GFP_KERNEL);
+ if (!div) {
+ kfree(gate);
+ break;
+ }
+
+ mux = kzalloc(sizeof(struct clk_mux), GFP_KERNEL);
+ if (!mux) {
+ kfree(gate);
+ kfree(div);
+ break;
+ }
+
+ gate->reg = reg + VCC_GATE_OFFSET;
+ gate->bit_idx = i;
+ gate->flags = CLK_GATE_SET_TO_DISABLE;
+ gate->lock = data->lock;
+
+ div->reg = reg + VCC_DIV_OFFSET;
+ div->shift = 2 * i;
+ div->width = 2;
+ div->flags = CLK_DIVIDER_POWER_OF_TWO;
+
+ mux->reg = reg + VCC_MUX_OFFSET;
+ mux->shift = 2 * i;
+ mux->mask = 0x3;
+
+ clk = clk_register_composite(NULL, clk_name, parents,
+ num_parents,
+ &mux->hw, &clk_mux_ops,
+ &div->hw, &clk_divider_ops,
+ &gate->hw, &clk_gate_ops,
+ data->clk_flags);
+ if (IS_ERR(clk)) {
+ kfree(gate);
+ kfree(div);
+ kfree(mux);
+ goto err;
+ }
+
+ pr_debug("%s: parent %s rate %u\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ (unsigned int)clk_get_rate(clk));
+
+ clk_data->clks[i] = clk;
+ }
+
+ kfree(parents);
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
+ return;
+
+err:
+ for (i = 0; i < clk_data->clk_num; i++) {
+ struct clk_composite *composite;
+
+ if (!clk_data->clks[i])
+ continue;
+
+ composite = container_of(__clk_get_hw(clk_data->clks[i]),
+ struct clk_composite, hw);
+ kfree(container_of(composite->gate_hw, struct clk_gate, hw));
+ kfree(container_of(composite->rate_hw, struct clk_divider, hw));
+ kfree(container_of(composite->mux_hw, struct clk_mux, hw));
+ }
+
+ if (clk_data)
+ kfree(clk_data->clks);
+
+ kfree(clk_data);
+ kfree(parents);
+}
+CLK_OF_DECLARE(clkgen_vcc, "st,clkgen-vcc", st_of_clkgen_vcc_setup);
diff --git a/drivers/clk/st/clkgen-pll.c b/drivers/clk/st/clkgen-pll.c
new file mode 100644
index 000000000000..bca0a0badbfa
--- /dev/null
+++ b/drivers/clk/st/clkgen-pll.c
@@ -0,0 +1,698 @@
+/*
+ * Copyright (C) 2014 STMicroelectronics (R&D) Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+/*
+ * Authors:
+ * Stephen Gallimore <stephen.gallimore@st.com>,
+ * Pankaj Dev <pankaj.dev@st.com>.
+ */
+
+#include <linux/slab.h>
+#include <linux/of_address.h>
+#include <linux/clk-provider.h>
+
+#include "clkgen.h"
+
+static DEFINE_SPINLOCK(clkgena_c32_odf_lock);
+
+/*
+ * Common PLL configuration register bits for PLL800 and PLL1600 C65
+ */
+#define C65_MDIV_PLL800_MASK (0xff)
+#define C65_MDIV_PLL1600_MASK (0x7)
+#define C65_NDIV_MASK (0xff)
+#define C65_PDIV_MASK (0x7)
+
+/*
+ * PLL configuration register bits for PLL3200 C32
+ */
+#define C32_NDIV_MASK (0xff)
+#define C32_IDF_MASK (0x7)
+#define C32_ODF_MASK (0x3f)
+#define C32_LDF_MASK (0x7f)
+
+#define C32_MAX_ODFS (4)
+
+struct clkgen_pll_data {
+ struct clkgen_field pdn_status;
+ struct clkgen_field locked_status;
+ struct clkgen_field mdiv;
+ struct clkgen_field ndiv;
+ struct clkgen_field pdiv;
+ struct clkgen_field idf;
+ struct clkgen_field ldf;
+ unsigned int num_odfs;
+ struct clkgen_field odf[C32_MAX_ODFS];
+ struct clkgen_field odf_gate[C32_MAX_ODFS];
+ const struct clk_ops *ops;
+};
+
+static const struct clk_ops st_pll1600c65_ops;
+static const struct clk_ops st_pll800c65_ops;
+static const struct clk_ops stm_pll3200c32_ops;
+static const struct clk_ops st_pll1200c32_ops;
+
+static struct clkgen_pll_data st_pll1600c65_ax = {
+ .pdn_status = CLKGEN_FIELD(0x0, 0x1, 19),
+ .locked_status = CLKGEN_FIELD(0x0, 0x1, 31),
+ .mdiv = CLKGEN_FIELD(0x0, C65_MDIV_PLL1600_MASK, 0),
+ .ndiv = CLKGEN_FIELD(0x0, C65_NDIV_MASK, 8),
+ .ops = &st_pll1600c65_ops
+};
+
+static struct clkgen_pll_data st_pll800c65_ax = {
+ .pdn_status = CLKGEN_FIELD(0x0, 0x1, 19),
+ .locked_status = CLKGEN_FIELD(0x0, 0x1, 31),
+ .mdiv = CLKGEN_FIELD(0x0, C65_MDIV_PLL800_MASK, 0),
+ .ndiv = CLKGEN_FIELD(0x0, C65_NDIV_MASK, 8),
+ .pdiv = CLKGEN_FIELD(0x0, C65_PDIV_MASK, 16),
+ .ops = &st_pll800c65_ops
+};
+
+static struct clkgen_pll_data st_pll3200c32_a1x_0 = {
+ .pdn_status = CLKGEN_FIELD(0x0, 0x1, 31),
+ .locked_status = CLKGEN_FIELD(0x4, 0x1, 31),
+ .ndiv = CLKGEN_FIELD(0x0, C32_NDIV_MASK, 0x0),
+ .idf = CLKGEN_FIELD(0x4, C32_IDF_MASK, 0x0),
+ .num_odfs = 4,
+ .odf = { CLKGEN_FIELD(0x54, C32_ODF_MASK, 4),
+ CLKGEN_FIELD(0x54, C32_ODF_MASK, 10),
+ CLKGEN_FIELD(0x54, C32_ODF_MASK, 16),
+ CLKGEN_FIELD(0x54, C32_ODF_MASK, 22) },
+ .odf_gate = { CLKGEN_FIELD(0x54, 0x1, 0),
+ CLKGEN_FIELD(0x54, 0x1, 1),
+ CLKGEN_FIELD(0x54, 0x1, 2),
+ CLKGEN_FIELD(0x54, 0x1, 3) },
+ .ops = &stm_pll3200c32_ops,
+};
+
+static struct clkgen_pll_data st_pll3200c32_a1x_1 = {
+ .pdn_status = CLKGEN_FIELD(0xC, 0x1, 31),
+ .locked_status = CLKGEN_FIELD(0x10, 0x1, 31),
+ .ndiv = CLKGEN_FIELD(0xC, C32_NDIV_MASK, 0x0),
+ .idf = CLKGEN_FIELD(0x10, C32_IDF_MASK, 0x0),
+ .num_odfs = 4,
+ .odf = { CLKGEN_FIELD(0x58, C32_ODF_MASK, 4),
+ CLKGEN_FIELD(0x58, C32_ODF_MASK, 10),
+ CLKGEN_FIELD(0x58, C32_ODF_MASK, 16),
+ CLKGEN_FIELD(0x58, C32_ODF_MASK, 22) },
+ .odf_gate = { CLKGEN_FIELD(0x58, 0x1, 0),
+ CLKGEN_FIELD(0x58, 0x1, 1),
+ CLKGEN_FIELD(0x58, 0x1, 2),
+ CLKGEN_FIELD(0x58, 0x1, 3) },
+ .ops = &stm_pll3200c32_ops,
+};
+
+/* 415 specific */
+static struct clkgen_pll_data st_pll3200c32_a9_415 = {
+ .pdn_status = CLKGEN_FIELD(0x0, 0x1, 0),
+ .locked_status = CLKGEN_FIELD(0x6C, 0x1, 0),
+ .ndiv = CLKGEN_FIELD(0x0, C32_NDIV_MASK, 9),
+ .idf = CLKGEN_FIELD(0x0, C32_IDF_MASK, 22),
+ .num_odfs = 1,
+ .odf = { CLKGEN_FIELD(0x0, C32_ODF_MASK, 3) },
+ .odf_gate = { CLKGEN_FIELD(0x0, 0x1, 28) },
+ .ops = &stm_pll3200c32_ops,
+};
+
+static struct clkgen_pll_data st_pll3200c32_ddr_415 = {
+ .pdn_status = CLKGEN_FIELD(0x0, 0x1, 0),
+ .locked_status = CLKGEN_FIELD(0x100, 0x1, 0),
+ .ndiv = CLKGEN_FIELD(0x8, C32_NDIV_MASK, 0),
+ .idf = CLKGEN_FIELD(0x0, C32_IDF_MASK, 25),
+ .num_odfs = 2,
+ .odf = { CLKGEN_FIELD(0x8, C32_ODF_MASK, 8),
+ CLKGEN_FIELD(0x8, C32_ODF_MASK, 14) },
+ .odf_gate = { CLKGEN_FIELD(0x4, 0x1, 28),
+ CLKGEN_FIELD(0x4, 0x1, 29) },
+ .ops = &stm_pll3200c32_ops,
+};
+
+static struct clkgen_pll_data st_pll1200c32_gpu_415 = {
+ .pdn_status = CLKGEN_FIELD(0x144, 0x1, 3),
+ .locked_status = CLKGEN_FIELD(0x168, 0x1, 0),
+ .ldf = CLKGEN_FIELD(0x0, C32_LDF_MASK, 3),
+ .idf = CLKGEN_FIELD(0x0, C32_IDF_MASK, 0),
+ .num_odfs = 0,
+ .odf = { CLKGEN_FIELD(0x0, C32_ODF_MASK, 10) },
+ .ops = &st_pll1200c32_ops,
+};
+
+/* 416 specific */
+static struct clkgen_pll_data st_pll3200c32_a9_416 = {
+ .pdn_status = CLKGEN_FIELD(0x0, 0x1, 0),
+ .locked_status = CLKGEN_FIELD(0x6C, 0x1, 0),
+ .ndiv = CLKGEN_FIELD(0x8, C32_NDIV_MASK, 0),
+ .idf = CLKGEN_FIELD(0x0, C32_IDF_MASK, 25),
+ .num_odfs = 1,
+ .odf = { CLKGEN_FIELD(0x8, C32_ODF_MASK, 8) },
+ .odf_gate = { CLKGEN_FIELD(0x4, 0x1, 28) },
+ .ops = &stm_pll3200c32_ops,
+};
+
+static struct clkgen_pll_data st_pll3200c32_ddr_416 = {
+ .pdn_status = CLKGEN_FIELD(0x0, 0x1, 0),
+ .locked_status = CLKGEN_FIELD(0x10C, 0x1, 0),
+ .ndiv = CLKGEN_FIELD(0x8, C32_NDIV_MASK, 0),
+ .idf = CLKGEN_FIELD(0x0, C32_IDF_MASK, 25),
+ .num_odfs = 2,
+ .odf = { CLKGEN_FIELD(0x8, C32_ODF_MASK, 8),
+ CLKGEN_FIELD(0x8, C32_ODF_MASK, 14) },
+ .odf_gate = { CLKGEN_FIELD(0x4, 0x1, 28),
+ CLKGEN_FIELD(0x4, 0x1, 29) },
+ .ops = &stm_pll3200c32_ops,
+};
+
+static struct clkgen_pll_data st_pll1200c32_gpu_416 = {
+ .pdn_status = CLKGEN_FIELD(0x8E4, 0x1, 3),
+ .locked_status = CLKGEN_FIELD(0x90C, 0x1, 0),
+ .ldf = CLKGEN_FIELD(0x0, C32_LDF_MASK, 3),
+ .idf = CLKGEN_FIELD(0x0, C32_IDF_MASK, 0),
+ .num_odfs = 0,
+ .odf = { CLKGEN_FIELD(0x0, C32_ODF_MASK, 10) },
+ .ops = &st_pll1200c32_ops,
+};
+
+/**
+ * DOC: Clock Generated by PLL, rate set and enabled by bootloader
+ *
+ * Traits of this clock:
+ * prepare - clk_(un)prepare only ensures parent is (un)prepared
+ * enable - clk_enable/disable only ensures parent is enabled
+ * rate - rate is fixed. No clk_set_rate support
+ * parent - fixed parent. No clk_set_parent support
+ */
+
+/**
+ * PLL clock that is integrated in the ClockGenA instances on the STiH415
+ * and STiH416.
+ *
+ * @hw: handle between common and hardware-specific interfaces.
+ * @type: PLL instance type.
+ * @regs_base: base of the PLL configuration register(s).
+ *
+ */
+struct clkgen_pll {
+ struct clk_hw hw;
+ struct clkgen_pll_data *data;
+ void __iomem *regs_base;
+};
+
+#define to_clkgen_pll(_hw) container_of(_hw, struct clkgen_pll, hw)
+
+static int clkgen_pll_is_locked(struct clk_hw *hw)
+{
+ struct clkgen_pll *pll = to_clkgen_pll(hw);
+ u32 locked = CLKGEN_READ(pll, locked_status);
+
+ return !!locked;
+}
+
+static int clkgen_pll_is_enabled(struct clk_hw *hw)
+{
+ struct clkgen_pll *pll = to_clkgen_pll(hw);
+ u32 poweroff = CLKGEN_READ(pll, pdn_status);
+ return !poweroff;
+}
+
+unsigned long recalc_stm_pll800c65(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clkgen_pll *pll = to_clkgen_pll(hw);
+ unsigned long mdiv, ndiv, pdiv;
+ unsigned long rate;
+ uint64_t res;
+
+ if (!clkgen_pll_is_enabled(hw) || !clkgen_pll_is_locked(hw))
+ return 0;
+
+ pdiv = CLKGEN_READ(pll, pdiv);
+ mdiv = CLKGEN_READ(pll, mdiv);
+ ndiv = CLKGEN_READ(pll, ndiv);
+
+ if (!mdiv)
+ mdiv++; /* mdiv=0 or 1 => MDIV=1 */
+
+ res = (uint64_t)2 * (uint64_t)parent_rate * (uint64_t)ndiv;
+ rate = (unsigned long)div64_u64(res, mdiv * (1 << pdiv));
+
+ pr_debug("%s:%s rate %lu\n", __clk_get_name(hw->clk), __func__, rate);
+
+ return rate;
+
+}
+
+unsigned long recalc_stm_pll1600c65(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clkgen_pll *pll = to_clkgen_pll(hw);
+ unsigned long mdiv, ndiv;
+ unsigned long rate;
+
+ if (!clkgen_pll_is_enabled(hw) || !clkgen_pll_is_locked(hw))
+ return 0;
+
+ mdiv = CLKGEN_READ(pll, mdiv);
+ ndiv = CLKGEN_READ(pll, ndiv);
+
+ if (!mdiv)
+ mdiv = 1;
+
+ /* Note: input is divided by 1000 to avoid overflow */
+ rate = ((2 * (parent_rate / 1000) * ndiv) / mdiv) * 1000;
+
+ pr_debug("%s:%s rate %lu\n", __clk_get_name(hw->clk), __func__, rate);
+
+ return rate;
+}
+
+unsigned long recalc_stm_pll3200c32(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clkgen_pll *pll = to_clkgen_pll(hw);
+ unsigned long ndiv, idf;
+ unsigned long rate = 0;
+
+ if (!clkgen_pll_is_enabled(hw) || !clkgen_pll_is_locked(hw))
+ return 0;
+
+ ndiv = CLKGEN_READ(pll, ndiv);
+ idf = CLKGEN_READ(pll, idf);
+
+ if (idf)
+ /* Note: input is divided to avoid overflow */
+ rate = ((2 * (parent_rate/1000) * ndiv) / idf) * 1000;
+
+ pr_debug("%s:%s rate %lu\n", __clk_get_name(hw->clk), __func__, rate);
+
+ return rate;
+}
+
+unsigned long recalc_stm_pll1200c32(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clkgen_pll *pll = to_clkgen_pll(hw);
+ unsigned long odf, ldf, idf;
+ unsigned long rate;
+
+ if (!clkgen_pll_is_enabled(hw) || !clkgen_pll_is_locked(hw))
+ return 0;
+
+ odf = CLKGEN_READ(pll, odf[0]);
+ ldf = CLKGEN_READ(pll, ldf);
+ idf = CLKGEN_READ(pll, idf);
+
+ if (!idf) /* idf==0 means 1 */
+ idf = 1;
+ if (!odf) /* odf==0 means 1 */
+ odf = 1;
+
+ /* Note: input is divided by 1000 to avoid overflow */
+ rate = (((parent_rate / 1000) * ldf) / (odf * idf)) * 1000;
+
+ pr_debug("%s:%s rate %lu\n", __clk_get_name(hw->clk), __func__, rate);
+
+ return rate;
+}
+
+static const struct clk_ops st_pll1600c65_ops = {
+ .is_enabled = clkgen_pll_is_enabled,
+ .recalc_rate = recalc_stm_pll1600c65,
+};
+
+static const struct clk_ops st_pll800c65_ops = {
+ .is_enabled = clkgen_pll_is_enabled,
+ .recalc_rate = recalc_stm_pll800c65,
+};
+
+static const struct clk_ops stm_pll3200c32_ops = {
+ .is_enabled = clkgen_pll_is_enabled,
+ .recalc_rate = recalc_stm_pll3200c32,
+};
+
+static const struct clk_ops st_pll1200c32_ops = {
+ .is_enabled = clkgen_pll_is_enabled,
+ .recalc_rate = recalc_stm_pll1200c32,
+};
+
+static struct clk * __init clkgen_pll_register(const char *parent_name,
+ struct clkgen_pll_data *pll_data,
+ void __iomem *reg,
+ const char *clk_name)
+{
+ struct clkgen_pll *pll;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+ if (!pll)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = clk_name;
+ init.ops = pll_data->ops;
+
+ init.flags = CLK_IS_BASIC;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ pll->data = pll_data;
+ pll->regs_base = reg;
+ pll->hw.init = &init;
+
+ clk = clk_register(NULL, &pll->hw);
+ if (IS_ERR(clk)) {
+ kfree(pll);
+ return clk;
+ }
+
+ pr_debug("%s: parent %s rate %lu\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ clk_get_rate(clk));
+
+ return clk;
+}
+
+static struct clk * __init clkgen_c65_lsdiv_register(const char *parent_name,
+ const char *clk_name)
+{
+ struct clk *clk;
+
+ clk = clk_register_fixed_factor(NULL, clk_name, parent_name, 0, 1, 2);
+ if (IS_ERR(clk))
+ return clk;
+
+ pr_debug("%s: parent %s rate %lu\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ clk_get_rate(clk));
+ return clk;
+}
+
+static void __iomem * __init clkgen_get_register_base(
+ struct device_node *np)
+{
+ struct device_node *pnode;
+ void __iomem *reg = NULL;
+
+ pnode = of_get_parent(np);
+ if (!pnode)
+ return NULL;
+
+ reg = of_iomap(pnode, 0);
+
+ of_node_put(pnode);
+ return reg;
+}
+
+#define CLKGENAx_PLL0_OFFSET 0x0
+#define CLKGENAx_PLL1_OFFSET 0x4
+
+static void __init clkgena_c65_pll_setup(struct device_node *np)
+{
+ const int num_pll_outputs = 3;
+ struct clk_onecell_data *clk_data;
+ const char *parent_name;
+ void __iomem *reg;
+ const char *clk_name;
+
+ parent_name = of_clk_get_parent_name(np, 0);
+ if (!parent_name)
+ return;
+
+ reg = clkgen_get_register_base(np);
+ if (!reg)
+ return;
+
+ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ return;
+
+ clk_data->clk_num = num_pll_outputs;
+ clk_data->clks = kzalloc(clk_data->clk_num * sizeof(struct clk *),
+ GFP_KERNEL);
+
+ if (!clk_data->clks)
+ goto err;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ 0, &clk_name))
+ goto err;
+
+ /*
+ * PLL0 HS (high speed) output
+ */
+ clk_data->clks[0] = clkgen_pll_register(parent_name,
+ &st_pll1600c65_ax,
+ reg + CLKGENAx_PLL0_OFFSET,
+ clk_name);
+
+ if (IS_ERR(clk_data->clks[0]))
+ goto err;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ 1, &clk_name))
+ goto err;
+
+ /*
+ * PLL0 LS (low speed) output, which is a fixed divide by 2 of the
+ * high speed output.
+ */
+ clk_data->clks[1] = clkgen_c65_lsdiv_register(__clk_get_name
+ (clk_data->clks[0]),
+ clk_name);
+
+ if (IS_ERR(clk_data->clks[1]))
+ goto err;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ 2, &clk_name))
+ goto err;
+
+ /*
+ * PLL1 output
+ */
+ clk_data->clks[2] = clkgen_pll_register(parent_name,
+ &st_pll800c65_ax,
+ reg + CLKGENAx_PLL1_OFFSET,
+ clk_name);
+
+ if (IS_ERR(clk_data->clks[2]))
+ goto err;
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
+ return;
+
+err:
+ kfree(clk_data->clks);
+ kfree(clk_data);
+}
+CLK_OF_DECLARE(clkgena_c65_plls,
+ "st,clkgena-plls-c65", clkgena_c65_pll_setup);
+
+static struct clk * __init clkgen_odf_register(const char *parent_name,
+ void * __iomem reg,
+ struct clkgen_pll_data *pll_data,
+ int odf,
+ spinlock_t *odf_lock,
+ const char *odf_name)
+{
+ struct clk *clk;
+ unsigned long flags;
+ struct clk_gate *gate;
+ struct clk_divider *div;
+
+ flags = CLK_GET_RATE_NOCACHE | CLK_SET_RATE_GATE;
+
+ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+ if (!gate)
+ return ERR_PTR(-ENOMEM);
+
+ gate->flags = CLK_GATE_SET_TO_DISABLE;
+ gate->reg = reg + pll_data->odf_gate[odf].offset;
+ gate->bit_idx = pll_data->odf_gate[odf].shift;
+ gate->lock = odf_lock;
+
+ div = kzalloc(sizeof(*div), GFP_KERNEL);
+ if (!div)
+ return ERR_PTR(-ENOMEM);
+
+ div->flags = CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO;
+ div->reg = reg + pll_data->odf[odf].offset;
+ div->shift = pll_data->odf[odf].shift;
+ div->width = fls(pll_data->odf[odf].mask);
+ div->lock = odf_lock;
+
+ clk = clk_register_composite(NULL, odf_name, &parent_name, 1,
+ NULL, NULL,
+ &div->hw, &clk_divider_ops,
+ &gate->hw, &clk_gate_ops,
+ flags);
+ if (IS_ERR(clk))
+ return clk;
+
+ pr_debug("%s: parent %s rate %lu\n",
+ __clk_get_name(clk),
+ __clk_get_name(clk_get_parent(clk)),
+ clk_get_rate(clk));
+ return clk;
+}
+
+static struct of_device_id c32_pll_of_match[] = {
+ {
+ .compatible = "st,plls-c32-a1x-0",
+ .data = &st_pll3200c32_a1x_0,
+ },
+ {
+ .compatible = "st,plls-c32-a1x-1",
+ .data = &st_pll3200c32_a1x_1,
+ },
+ {
+ .compatible = "st,stih415-plls-c32-a9",
+ .data = &st_pll3200c32_a9_415,
+ },
+ {
+ .compatible = "st,stih415-plls-c32-ddr",
+ .data = &st_pll3200c32_ddr_415,
+ },
+ {
+ .compatible = "st,stih416-plls-c32-a9",
+ .data = &st_pll3200c32_a9_416,
+ },
+ {
+ .compatible = "st,stih416-plls-c32-ddr",
+ .data = &st_pll3200c32_ddr_416,
+ },
+ {}
+};
+
+static void __init clkgen_c32_pll_setup(struct device_node *np)
+{
+ const struct of_device_id *match;
+ struct clk *clk;
+ const char *parent_name, *pll_name;
+ void __iomem *pll_base;
+ int num_odfs, odf;
+ struct clk_onecell_data *clk_data;
+ struct clkgen_pll_data *data;
+
+ match = of_match_node(c32_pll_of_match, np);
+ if (!match) {
+ pr_err("%s: No matching data\n", __func__);
+ return;
+ }
+
+ data = (struct clkgen_pll_data *) match->data;
+
+ parent_name = of_clk_get_parent_name(np, 0);
+ if (!parent_name)
+ return;
+
+ pll_base = clkgen_get_register_base(np);
+ if (!pll_base)
+ return;
+
+ clk = clkgen_pll_register(parent_name, data, pll_base, np->name);
+ if (IS_ERR(clk))
+ return;
+
+ pll_name = __clk_get_name(clk);
+
+ num_odfs = data->num_odfs;
+
+ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ return;
+
+ clk_data->clk_num = num_odfs;
+ clk_data->clks = kzalloc(clk_data->clk_num * sizeof(struct clk *),
+ GFP_KERNEL);
+
+ if (!clk_data->clks)
+ goto err;
+
+ for (odf = 0; odf < num_odfs; odf++) {
+ struct clk *clk;
+ const char *clk_name;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ odf, &clk_name))
+ return;
+
+ clk = clkgen_odf_register(pll_name, pll_base, data,
+ odf, &clkgena_c32_odf_lock, clk_name);
+ if (IS_ERR(clk))
+ goto err;
+
+ clk_data->clks[odf] = clk;
+ }
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
+ return;
+
+err:
+ kfree(pll_name);
+ kfree(clk_data->clks);
+ kfree(clk_data);
+}
+CLK_OF_DECLARE(clkgen_c32_pll, "st,clkgen-plls-c32", clkgen_c32_pll_setup);
+
+static struct of_device_id c32_gpu_pll_of_match[] = {
+ {
+ .compatible = "st,stih415-gpu-pll-c32",
+ .data = &st_pll1200c32_gpu_415,
+ },
+ {
+ .compatible = "st,stih416-gpu-pll-c32",
+ .data = &st_pll1200c32_gpu_416,
+ },
+};
+
+static void __init clkgengpu_c32_pll_setup(struct device_node *np)
+{
+ const struct of_device_id *match;
+ struct clk *clk;
+ const char *parent_name;
+ void __iomem *reg;
+ const char *clk_name;
+ struct clkgen_pll_data *data;
+
+ match = of_match_node(c32_gpu_pll_of_match, np);
+ if (!match) {
+ pr_err("%s: No matching data\n", __func__);
+ return;
+ }
+
+ data = (struct clkgen_pll_data *)match->data;
+
+ parent_name = of_clk_get_parent_name(np, 0);
+ if (!parent_name)
+ return;
+
+ reg = clkgen_get_register_base(np);
+ if (!reg)
+ return;
+
+ if (of_property_read_string_index(np, "clock-output-names",
+ 0, &clk_name))
+ return;
+
+ /*
+ * PLL 1200MHz output
+ */
+ clk = clkgen_pll_register(parent_name, data, reg, clk_name);
+
+ if (!IS_ERR(clk))
+ of_clk_add_provider(np, of_clk_src_simple_get, clk);
+
+ return;
+}
+CLK_OF_DECLARE(clkgengpu_c32_pll,
+ "st,clkgengpu-pll-c32", clkgengpu_c32_pll_setup);
diff --git a/drivers/clk/st/clkgen.h b/drivers/clk/st/clkgen.h
new file mode 100644
index 000000000000..35c863295268
--- /dev/null
+++ b/drivers/clk/st/clkgen.h
@@ -0,0 +1,48 @@
+/************************************************************************
+File : Clock H/w specific Information
+
+Author: Pankaj Dev <pankaj.dev@st.com>
+
+Copyright (C) 2014 STMicroelectronics
+************************************************************************/
+
+#ifndef __CLKGEN_INFO_H
+#define __CLKGEN_INFO_H
+
+struct clkgen_field {
+ unsigned int offset;
+ unsigned int mask;
+ unsigned int shift;
+};
+
+static inline unsigned long clkgen_read(void __iomem *base,
+ struct clkgen_field *field)
+{
+ return (readl(base + field->offset) >> field->shift) & field->mask;
+}
+
+
+static inline void clkgen_write(void __iomem *base, struct clkgen_field *field,
+ unsigned long val)
+{
+ writel((readl(base + field->offset) &
+ ~(field->mask << field->shift)) | (val << field->shift),
+ base + field->offset);
+
+ return;
+}
+
+#define CLKGEN_FIELD(_offset, _mask, _shift) { \
+ .offset = _offset, \
+ .mask = _mask, \
+ .shift = _shift, \
+ }
+
+#define CLKGEN_READ(pll, field) clkgen_read(pll->regs_base, \
+ &pll->data->field)
+
+#define CLKGEN_WRITE(pll, field, val) clkgen_write(pll->regs_base, \
+ &pll->data->field, val)
+
+#endif /*__CLKGEN_INFO_H*/
+
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index abb6c5ac8a10..bd7dc733c1ca 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -18,6 +18,7 @@
#include <linux/clkdev.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/reset-controller.h>
#include "clk-factors.h"
@@ -51,6 +52,8 @@ static void __init sun4i_osc_clk_setup(struct device_node *node)
if (!gate)
goto err_free_fixed;
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
/* set up gate and fixed rate properties */
gate->reg = of_iomap(node, 0);
gate->bit_idx = SUNXI_OSC24M_GATE;
@@ -77,7 +80,7 @@ err_free_gate:
err_free_fixed:
kfree(fixed);
}
-CLK_OF_DECLARE(sun4i_osc, "allwinner,sun4i-osc-clk", sun4i_osc_clk_setup);
+CLK_OF_DECLARE(sun4i_osc, "allwinner,sun4i-a10-osc-clk", sun4i_osc_clk_setup);
@@ -249,7 +252,38 @@ static void sun4i_get_pll5_factors(u32 *freq, u32 parent_rate,
*n = DIV_ROUND_UP(div, (*k+1));
}
+/**
+ * sun6i_a31_get_pll6_factors() - calculates n, k factors for A31 PLL6
+ * PLL6 rate is calculated as follows
+ * rate = parent_rate * n * (k + 1) / 2
+ * parent_rate is always 24Mhz
+ */
+
+static void sun6i_a31_get_pll6_factors(u32 *freq, u32 parent_rate,
+ u8 *n, u8 *k, u8 *m, u8 *p)
+{
+ u8 div;
+
+ /*
+ * We always have 24MHz / 2, so we can just say that our
+ * parent clock is 12MHz.
+ */
+ parent_rate = parent_rate / 2;
+ /* Normalize value to a parent_rate multiple (24M / 2) */
+ div = *freq / parent_rate;
+ *freq = parent_rate * div;
+
+ /* we were called to round the frequency, we can now return */
+ if (n == NULL)
+ return;
+
+ *k = div / 32;
+ if (*k > 3)
+ *k = 3;
+
+ *n = DIV_ROUND_UP(div, (*k+1));
+}
/**
* sun4i_get_apb1_factors() - calculates m, p factors for APB1
@@ -265,7 +299,7 @@ static void sun4i_get_apb1_factors(u32 *freq, u32 parent_rate,
if (parent_rate < *freq)
*freq = parent_rate;
- parent_rate = (parent_rate + (*freq - 1)) / *freq;
+ parent_rate = DIV_ROUND_UP(parent_rate, *freq);
/* Invalid rate! */
if (parent_rate > 32)
@@ -296,7 +330,7 @@ static void sun4i_get_apb1_factors(u32 *freq, u32 parent_rate,
/**
* sun4i_get_mod0_factors() - calculates m, n factors for MOD0-style clocks
- * MMC rate is calculated as follows
+ * MOD0 rate is calculated as follows
* rate = (parent_rate >> p) / (m + 1);
*/
@@ -310,7 +344,7 @@ static void sun4i_get_mod0_factors(u32 *freq, u32 parent_rate,
if (*freq > parent_rate)
*freq = parent_rate;
- div = parent_rate / *freq;
+ div = DIV_ROUND_UP(parent_rate, *freq);
if (div < 16)
calcp = 0;
@@ -351,7 +385,7 @@ static void sun7i_a20_get_out_factors(u32 *freq, u32 parent_rate,
if (*freq > parent_rate)
*freq = parent_rate;
- div = parent_rate / *freq;
+ div = DIV_ROUND_UP(parent_rate, *freq);
if (div < 32)
calcp = 0;
@@ -377,6 +411,102 @@ static void sun7i_a20_get_out_factors(u32 *freq, u32 parent_rate,
/**
+ * sun7i_a20_gmac_clk_setup - Setup function for A20/A31 GMAC clock module
+ *
+ * This clock looks something like this
+ * ________________________
+ * MII TX clock from PHY >-----|___________ _________|----> to GMAC core
+ * GMAC Int. RGMII TX clk >----|___________\__/__gate---|----> to PHY
+ * Ext. 125MHz RGMII TX clk >--|__divider__/ |
+ * |________________________|
+ *
+ * The external 125 MHz reference is optional, i.e. GMAC can use its
+ * internal TX clock just fine. The A31 GMAC clock module does not have
+ * the divider controls for the external reference.
+ *
+ * To keep it simple, let the GMAC use either the MII TX clock for MII mode,
+ * and its internal TX clock for GMII and RGMII modes. The GMAC driver should
+ * select the appropriate source and gate/ungate the output to the PHY.
+ *
+ * Only the GMAC should use this clock. Altering the clock so that it doesn't
+ * match the GMAC's operation parameters will result in the GMAC not being
+ * able to send traffic out. The GMAC driver should set the clock rate and
+ * enable/disable this clock to configure the required state. The clock
+ * driver then responds by auto-reparenting the clock.
+ */
+
+#define SUN7I_A20_GMAC_GPIT 2
+#define SUN7I_A20_GMAC_MASK 0x3
+#define SUN7I_A20_GMAC_PARENTS 2
+
+static void __init sun7i_a20_gmac_clk_setup(struct device_node *node)
+{
+ struct clk *clk;
+ struct clk_mux *mux;
+ struct clk_gate *gate;
+ const char *clk_name = node->name;
+ const char *parents[SUN7I_A20_GMAC_PARENTS];
+ void *reg;
+
+ if (of_property_read_string(node, "clock-output-names", &clk_name))
+ return;
+
+ /* allocate mux and gate clock structs */
+ mux = kzalloc(sizeof(struct clk_mux), GFP_KERNEL);
+ if (!mux)
+ return;
+
+ gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL);
+ if (!gate)
+ goto free_mux;
+
+ /* gmac clock requires exactly 2 parents */
+ parents[0] = of_clk_get_parent_name(node, 0);
+ parents[1] = of_clk_get_parent_name(node, 1);
+ if (!parents[0] || !parents[1])
+ goto free_gate;
+
+ reg = of_iomap(node, 0);
+ if (!reg)
+ goto free_gate;
+
+ /* set up gate and fixed rate properties */
+ gate->reg = reg;
+ gate->bit_idx = SUN7I_A20_GMAC_GPIT;
+ gate->lock = &clk_lock;
+ mux->reg = reg;
+ mux->mask = SUN7I_A20_GMAC_MASK;
+ mux->flags = CLK_MUX_INDEX_BIT;
+ mux->lock = &clk_lock;
+
+ clk = clk_register_composite(NULL, clk_name,
+ parents, SUN7I_A20_GMAC_PARENTS,
+ &mux->hw, &clk_mux_ops,
+ NULL, NULL,
+ &gate->hw, &clk_gate_ops,
+ 0);
+
+ if (IS_ERR(clk))
+ goto iounmap_reg;
+
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ clk_register_clkdev(clk, clk_name, NULL);
+
+ return;
+
+iounmap_reg:
+ iounmap(reg);
+free_gate:
+ kfree(gate);
+free_mux:
+ kfree(mux);
+}
+CLK_OF_DECLARE(sun7i_a20_gmac, "allwinner,sun7i-a20-gmac-clk",
+ sun7i_a20_gmac_clk_setup);
+
+
+
+/**
* sunxi_factors_clk_setup() - Setup function for factor clocks
*/
@@ -387,6 +517,7 @@ struct factors_data {
int mux;
struct clk_factors_config *table;
void (*getter) (u32 *rate, u32 parent_rate, u8 *n, u8 *k, u8 *m, u8 *p);
+ const char *name;
};
static struct clk_factors_config sun4i_pll1_config = {
@@ -416,6 +547,13 @@ static struct clk_factors_config sun4i_pll5_config = {
.kwidth = 2,
};
+static struct clk_factors_config sun6i_a31_pll6_config = {
+ .nshift = 8,
+ .nwidth = 5,
+ .kshift = 4,
+ .kwidth = 2,
+};
+
static struct clk_factors_config sun4i_apb1_config = {
.mshift = 0,
.mwidth = 5,
@@ -451,10 +589,30 @@ static const struct factors_data sun6i_a31_pll1_data __initconst = {
.getter = sun6i_a31_get_pll1_factors,
};
+static const struct factors_data sun7i_a20_pll4_data __initconst = {
+ .enable = 31,
+ .table = &sun4i_pll5_config,
+ .getter = sun4i_get_pll5_factors,
+};
+
static const struct factors_data sun4i_pll5_data __initconst = {
.enable = 31,
.table = &sun4i_pll5_config,
.getter = sun4i_get_pll5_factors,
+ .name = "pll5",
+};
+
+static const struct factors_data sun4i_pll6_data __initconst = {
+ .enable = 31,
+ .table = &sun4i_pll5_config,
+ .getter = sun4i_get_pll5_factors,
+ .name = "pll6",
+};
+
+static const struct factors_data sun6i_a31_pll6_data __initconst = {
+ .enable = 31,
+ .table = &sun6i_a31_pll6_config,
+ .getter = sun6i_a31_get_pll6_factors,
};
static const struct factors_data sun4i_apb1_data __initconst = {
@@ -497,14 +655,14 @@ static struct clk * __init sunxi_factors_clk_setup(struct device_node *node,
(parents[i] = of_clk_get_parent_name(node, i)) != NULL)
i++;
- /* Nodes should be providing the name via clock-output-names
- * but originally our dts didn't, and so we used node->name.
- * The new, better nodes look like clk@deadbeef, so we pull the
- * name just in this case */
- if (!strcmp("clk", clk_name)) {
- of_property_read_string_index(node, "clock-output-names",
- 0, &clk_name);
- }
+ /*
+ * some factor clocks, such as pll5 and pll6, may have multiple
+ * outputs, and have their name designated in factors_data
+ */
+ if (data->name)
+ clk_name = data->name;
+ else
+ of_property_read_string(node, "clock-output-names", &clk_name);
factors = kzalloc(sizeof(struct clk_factors), GFP_KERNEL);
if (!factors)
@@ -601,6 +759,8 @@ static void __init sunxi_mux_clk_setup(struct device_node *node,
(parents[i] = of_clk_get_parent_name(node, i)) != NULL)
i++;
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
clk = clk_register_mux(NULL, clk_name, parents, i,
CLK_SET_RATE_NO_REPARENT, reg,
data->shift, SUNXI_MUX_GATE_WIDTH,
@@ -660,6 +820,8 @@ static void __init sunxi_divider_clk_setup(struct device_node *node,
clk_parent = of_clk_get_parent_name(node, 0);
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
clk = clk_register_divider(NULL, clk_name, clk_parent, 0,
reg, data->shift, data->width,
data->pow ? CLK_DIVIDER_POWER_OF_TWO : 0,
@@ -673,6 +835,59 @@ static void __init sunxi_divider_clk_setup(struct device_node *node,
/**
+ * sunxi_gates_reset... - reset bits in leaf gate clk registers handling
+ */
+
+struct gates_reset_data {
+ void __iomem *reg;
+ spinlock_t *lock;
+ struct reset_controller_dev rcdev;
+};
+
+static int sunxi_gates_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ struct gates_reset_data *data = container_of(rcdev,
+ struct gates_reset_data,
+ rcdev);
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(data->lock, flags);
+
+ reg = readl(data->reg);
+ writel(reg & ~BIT(id), data->reg);
+
+ spin_unlock_irqrestore(data->lock, flags);
+
+ return 0;
+}
+
+static int sunxi_gates_reset_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ struct gates_reset_data *data = container_of(rcdev,
+ struct gates_reset_data,
+ rcdev);
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(data->lock, flags);
+
+ reg = readl(data->reg);
+ writel(reg | BIT(id), data->reg);
+
+ spin_unlock_irqrestore(data->lock, flags);
+
+ return 0;
+}
+
+static struct reset_control_ops sunxi_gates_reset_ops = {
+ .assert = sunxi_gates_reset_assert,
+ .deassert = sunxi_gates_reset_deassert,
+};
+
+/**
* sunxi_gates_clk_setup() - Setup function for leaf gates on clocks
*/
@@ -680,6 +895,7 @@ static void __init sunxi_divider_clk_setup(struct device_node *node,
struct gates_data {
DECLARE_BITMAP(mask, SUNXI_GATES_MAX_SIZE);
+ u32 reset_mask;
};
static const struct gates_data sun4i_axi_gates_data __initconst = {
@@ -746,10 +962,21 @@ static const struct gates_data sun7i_a20_apb1_gates_data __initconst = {
.mask = { 0xff80ff },
};
+static const struct gates_data sun4i_a10_usb_gates_data __initconst = {
+ .mask = {0x1C0},
+ .reset_mask = 0x07,
+};
+
+static const struct gates_data sun5i_a13_usb_gates_data __initconst = {
+ .mask = {0x140},
+ .reset_mask = 0x03,
+};
+
static void __init sunxi_gates_clk_setup(struct device_node *node,
struct gates_data *data)
{
struct clk_onecell_data *clk_data;
+ struct gates_reset_data *reset_data;
const char *clk_parent;
const char *clk_name;
void *reg;
@@ -793,6 +1020,21 @@ static void __init sunxi_gates_clk_setup(struct device_node *node,
clk_data->clk_num = i;
of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+
+ /* Register a reset controler for gates with reset bits */
+ if (data->reset_mask == 0)
+ return;
+
+ reset_data = kzalloc(sizeof(*reset_data), GFP_KERNEL);
+ if (!reset_data)
+ return;
+
+ reset_data->reg = reg;
+ reset_data->lock = &clk_lock;
+ reset_data->rcdev.nr_resets = __fls(data->reset_mask) + 1;
+ reset_data->rcdev.ops = &sunxi_gates_reset_ops;
+ reset_data->rcdev.of_node = node;
+ reset_controller_register(&reset_data->rcdev);
}
@@ -832,7 +1074,7 @@ static const struct divs_data pll5_divs_data __initconst = {
};
static const struct divs_data pll6_divs_data __initconst = {
- .factors = &sun4i_pll5_data,
+ .factors = &sun4i_pll6_data,
.div = {
{ .shift = 0, .table = pll6_sata_tbl, .gate = 14 }, /* M, SATA */
{ .fixed = 2 }, /* P, other */
@@ -854,7 +1096,7 @@ static void __init sunxi_divs_clk_setup(struct device_node *node,
struct divs_data *data)
{
struct clk_onecell_data *clk_data;
- const char *parent = node->name;
+ const char *parent;
const char *clk_name;
struct clk **clks, *pclk;
struct clk_hw *gate_hw, *rate_hw;
@@ -868,6 +1110,7 @@ static void __init sunxi_divs_clk_setup(struct device_node *node,
/* Set up factor clock that we will be dividing */
pclk = sunxi_factors_clk_setup(node, data->factors);
+ parent = __clk_get_name(pclk);
reg = of_iomap(node, 0);
@@ -970,56 +1213,60 @@ free_clkdata:
/* Matches for factors clocks */
static const struct of_device_id clk_factors_match[] __initconst = {
- {.compatible = "allwinner,sun4i-pll1-clk", .data = &sun4i_pll1_data,},
+ {.compatible = "allwinner,sun4i-a10-pll1-clk", .data = &sun4i_pll1_data,},
{.compatible = "allwinner,sun6i-a31-pll1-clk", .data = &sun6i_a31_pll1_data,},
- {.compatible = "allwinner,sun4i-apb1-clk", .data = &sun4i_apb1_data,},
- {.compatible = "allwinner,sun4i-mod0-clk", .data = &sun4i_mod0_data,},
+ {.compatible = "allwinner,sun7i-a20-pll4-clk", .data = &sun7i_a20_pll4_data,},
+ {.compatible = "allwinner,sun6i-a31-pll6-clk", .data = &sun6i_a31_pll6_data,},
+ {.compatible = "allwinner,sun4i-a10-apb1-clk", .data = &sun4i_apb1_data,},
+ {.compatible = "allwinner,sun4i-a10-mod0-clk", .data = &sun4i_mod0_data,},
{.compatible = "allwinner,sun7i-a20-out-clk", .data = &sun7i_a20_out_data,},
{}
};
/* Matches for divider clocks */
static const struct of_device_id clk_div_match[] __initconst = {
- {.compatible = "allwinner,sun4i-axi-clk", .data = &sun4i_axi_data,},
- {.compatible = "allwinner,sun4i-ahb-clk", .data = &sun4i_ahb_data,},
- {.compatible = "allwinner,sun4i-apb0-clk", .data = &sun4i_apb0_data,},
+ {.compatible = "allwinner,sun4i-a10-axi-clk", .data = &sun4i_axi_data,},
+ {.compatible = "allwinner,sun4i-a10-ahb-clk", .data = &sun4i_ahb_data,},
+ {.compatible = "allwinner,sun4i-a10-apb0-clk", .data = &sun4i_apb0_data,},
{.compatible = "allwinner,sun6i-a31-apb2-div-clk", .data = &sun6i_a31_apb2_div_data,},
{}
};
/* Matches for divided outputs */
static const struct of_device_id clk_divs_match[] __initconst = {
- {.compatible = "allwinner,sun4i-pll5-clk", .data = &pll5_divs_data,},
- {.compatible = "allwinner,sun4i-pll6-clk", .data = &pll6_divs_data,},
+ {.compatible = "allwinner,sun4i-a10-pll5-clk", .data = &pll5_divs_data,},
+ {.compatible = "allwinner,sun4i-a10-pll6-clk", .data = &pll6_divs_data,},
{}
};
/* Matches for mux clocks */
static const struct of_device_id clk_mux_match[] __initconst = {
- {.compatible = "allwinner,sun4i-cpu-clk", .data = &sun4i_cpu_mux_data,},
- {.compatible = "allwinner,sun4i-apb1-mux-clk", .data = &sun4i_apb1_mux_data,},
+ {.compatible = "allwinner,sun4i-a10-cpu-clk", .data = &sun4i_cpu_mux_data,},
+ {.compatible = "allwinner,sun4i-a10-apb1-mux-clk", .data = &sun4i_apb1_mux_data,},
{.compatible = "allwinner,sun6i-a31-ahb1-mux-clk", .data = &sun6i_a31_ahb1_mux_data,},
{}
};
/* Matches for gate clocks */
static const struct of_device_id clk_gates_match[] __initconst = {
- {.compatible = "allwinner,sun4i-axi-gates-clk", .data = &sun4i_axi_gates_data,},
- {.compatible = "allwinner,sun4i-ahb-gates-clk", .data = &sun4i_ahb_gates_data,},
+ {.compatible = "allwinner,sun4i-a10-axi-gates-clk", .data = &sun4i_axi_gates_data,},
+ {.compatible = "allwinner,sun4i-a10-ahb-gates-clk", .data = &sun4i_ahb_gates_data,},
{.compatible = "allwinner,sun5i-a10s-ahb-gates-clk", .data = &sun5i_a10s_ahb_gates_data,},
{.compatible = "allwinner,sun5i-a13-ahb-gates-clk", .data = &sun5i_a13_ahb_gates_data,},
{.compatible = "allwinner,sun6i-a31-ahb1-gates-clk", .data = &sun6i_a31_ahb1_gates_data,},
{.compatible = "allwinner,sun7i-a20-ahb-gates-clk", .data = &sun7i_a20_ahb_gates_data,},
- {.compatible = "allwinner,sun4i-apb0-gates-clk", .data = &sun4i_apb0_gates_data,},
+ {.compatible = "allwinner,sun4i-a10-apb0-gates-clk", .data = &sun4i_apb0_gates_data,},
{.compatible = "allwinner,sun5i-a10s-apb0-gates-clk", .data = &sun5i_a10s_apb0_gates_data,},
{.compatible = "allwinner,sun5i-a13-apb0-gates-clk", .data = &sun5i_a13_apb0_gates_data,},
{.compatible = "allwinner,sun7i-a20-apb0-gates-clk", .data = &sun7i_a20_apb0_gates_data,},
- {.compatible = "allwinner,sun4i-apb1-gates-clk", .data = &sun4i_apb1_gates_data,},
+ {.compatible = "allwinner,sun4i-a10-apb1-gates-clk", .data = &sun4i_apb1_gates_data,},
{.compatible = "allwinner,sun5i-a10s-apb1-gates-clk", .data = &sun5i_a10s_apb1_gates_data,},
{.compatible = "allwinner,sun5i-a13-apb1-gates-clk", .data = &sun5i_a13_apb1_gates_data,},
{.compatible = "allwinner,sun6i-a31-apb1-gates-clk", .data = &sun6i_a31_apb1_gates_data,},
{.compatible = "allwinner,sun7i-a20-apb1-gates-clk", .data = &sun7i_a20_apb1_gates_data,},
{.compatible = "allwinner,sun6i-a31-apb2-gates-clk", .data = &sun6i_a31_apb2_gates_data,},
+ {.compatible = "allwinner,sun4i-a10-usb-clk", .data = &sun4i_a10_usb_gates_data,},
+ {.compatible = "allwinner,sun5i-a13-usb-clk", .data = &sun5i_a13_usb_gates_data,},
{}
};
diff --git a/drivers/clk/tegra/clk-divider.c b/drivers/clk/tegra/clk-divider.c
index 4d75b1f37e3a..290f9c1a3749 100644
--- a/drivers/clk/tegra/clk-divider.c
+++ b/drivers/clk/tegra/clk-divider.c
@@ -59,7 +59,7 @@ static int get_div(struct tegra_clk_frac_div *divider, unsigned long rate,
return 0;
if (divider_ux1 > get_max_div(divider))
- return -EINVAL;
+ return get_max_div(divider);
return divider_ux1;
}
diff --git a/drivers/clk/tegra/clk-id.h b/drivers/clk/tegra/clk-id.h
index cf0c323f2c36..c39613c519af 100644
--- a/drivers/clk/tegra/clk-id.h
+++ b/drivers/clk/tegra/clk-id.h
@@ -180,9 +180,13 @@ enum clk_id {
tegra_clk_sbc6_8,
tegra_clk_sclk,
tegra_clk_sdmmc1,
+ tegra_clk_sdmmc1_8,
tegra_clk_sdmmc2,
+ tegra_clk_sdmmc2_8,
tegra_clk_sdmmc3,
+ tegra_clk_sdmmc3_8,
tegra_clk_sdmmc4,
+ tegra_clk_sdmmc4_8,
tegra_clk_se,
tegra_clk_soc_therm,
tegra_clk_sor0,
diff --git a/drivers/clk/tegra/clk-periph.c b/drivers/clk/tegra/clk-periph.c
index 356e9b804421..9e899c18af86 100644
--- a/drivers/clk/tegra/clk-periph.c
+++ b/drivers/clk/tegra/clk-periph.c
@@ -130,7 +130,7 @@ static const struct clk_ops tegra_clk_periph_nodiv_ops = {
.disable = clk_periph_disable,
};
-const struct clk_ops tegra_clk_periph_no_gate_ops = {
+static const struct clk_ops tegra_clk_periph_no_gate_ops = {
.get_parent = clk_periph_get_parent,
.set_parent = clk_periph_set_parent,
.recalc_rate = clk_periph_recalc_rate,
diff --git a/drivers/clk/tegra/clk-tegra-periph.c b/drivers/clk/tegra/clk-tegra-periph.c
index 5c35885f4a7c..1fa5c3f33b20 100644
--- a/drivers/clk/tegra/clk-tegra-periph.c
+++ b/drivers/clk/tegra/clk-tegra-periph.c
@@ -371,9 +371,7 @@ static const char *mux_pllp3_pllc_clkm[] = {
static const char *mux_pllm_pllc_pllp_plla_pllc2_c3_clkm[] = {
"pll_m", "pll_c", "pll_p", "pll_a", "pll_c2", "pll_c3", "clk_m"
};
-static u32 mux_pllm_pllc_pllp_plla_pllc2_c3_clkm_idx[] = {
- [0] = 0, [1] = 1, [2] = 2, [3] = 3, [4] = 4, [5] = 6,
-};
+#define mux_pllm_pllc_pllp_plla_pllc2_c3_clkm_idx NULL
static const char *mux_pllm_pllc2_c_c3_pllp_plla_pllc4[] = {
"pll_m", "pll_c2", "pll_c", "pll_c3", "pll_p", "pll_a_out0", "pll_c4",
@@ -465,6 +463,10 @@ static struct tegra_periph_init_data periph_clks[] = {
MUX("adx1", mux_plla_pllc_pllp_clkm, CLK_SOURCE_ADX1, 180, TEGRA_PERIPH_ON_APB, tegra_clk_adx1),
MUX("amx1", mux_plla_pllc_pllp_clkm, CLK_SOURCE_AMX1, 185, TEGRA_PERIPH_ON_APB, tegra_clk_amx1),
MUX("vi_sensor2", mux_pllm_pllc2_c_c3_pllp_plla, CLK_SOURCE_VI_SENSOR2, 20, TEGRA_PERIPH_NO_RESET, tegra_clk_vi_sensor2),
+ MUX8("sdmmc1", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SDMMC1, 14, 0, tegra_clk_sdmmc1_8),
+ MUX8("sdmmc2", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SDMMC2, 9, 0, tegra_clk_sdmmc2_8),
+ MUX8("sdmmc3", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SDMMC3, 69, 0, tegra_clk_sdmmc3_8),
+ MUX8("sdmmc4", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SDMMC4, 15, 0, tegra_clk_sdmmc4_8),
MUX8("sbc1", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SBC1, 41, TEGRA_PERIPH_ON_APB, tegra_clk_sbc1_8),
MUX8("sbc2", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SBC2, 44, TEGRA_PERIPH_ON_APB, tegra_clk_sbc2_8),
MUX8("sbc3", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SBC3, 46, TEGRA_PERIPH_ON_APB, tegra_clk_sbc3_8),
@@ -492,7 +494,7 @@ static struct tegra_periph_init_data periph_clks[] = {
UART("uartb", mux_pllp_pllc_pllm_clkm, CLK_SOURCE_UARTB, 7, tegra_clk_uartb),
UART("uartc", mux_pllp_pllc_pllm_clkm, CLK_SOURCE_UARTC, 55, tegra_clk_uartc),
UART("uartd", mux_pllp_pllc_pllm_clkm, CLK_SOURCE_UARTD, 65, tegra_clk_uartd),
- UART("uarte", mux_pllp_pllc_pllm_clkm, CLK_SOURCE_UARTE, 65, tegra_clk_uarte),
+ UART("uarte", mux_pllp_pllc_pllm_clkm, CLK_SOURCE_UARTE, 66, tegra_clk_uarte),
XUSB("xusb_host_src", mux_clkm_pllp_pllc_pllre, CLK_SOURCE_XUSB_HOST_SRC, 143, TEGRA_PERIPH_ON_APB | TEGRA_PERIPH_NO_RESET, tegra_clk_xusb_host_src),
XUSB("xusb_falcon_src", mux_clkm_pllp_pllc_pllre, CLK_SOURCE_XUSB_FALCON_SRC, 143, TEGRA_PERIPH_NO_RESET, tegra_clk_xusb_falcon_src),
XUSB("xusb_fs_src", mux_clkm_48M_pllp_480M, CLK_SOURCE_XUSB_FS_SRC, 143, TEGRA_PERIPH_NO_RESET, tegra_clk_xusb_fs_src),
diff --git a/drivers/clk/tegra/clk-tegra-super-gen4.c b/drivers/clk/tegra/clk-tegra-super-gen4.c
index 05dce4aa2c11..feb3201c85ce 100644
--- a/drivers/clk/tegra/clk-tegra-super-gen4.c
+++ b/drivers/clk/tegra/clk-tegra-super-gen4.c
@@ -120,7 +120,7 @@ void __init tegra_super_clk_gen4_init(void __iomem *clk_base,
ARRAY_SIZE(cclk_lp_parents),
CLK_SET_RATE_PARENT,
clk_base + CCLKLP_BURST_POLICY,
- 0, 4, 8, 9, NULL);
+ TEGRA_DIVIDER_2, 4, 8, 9, NULL);
*dt_clk = clk;
}
diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c
index 90d9d25f2228..80431f0fb268 100644
--- a/drivers/clk/tegra/clk-tegra114.c
+++ b/drivers/clk/tegra/clk-tegra114.c
@@ -682,12 +682,12 @@ static struct tegra_clk tegra114_clks[tegra_clk_max] __initdata = {
[tegra_clk_timer] = { .dt_id = TEGRA114_CLK_TIMER, .present = true },
[tegra_clk_uarta] = { .dt_id = TEGRA114_CLK_UARTA, .present = true },
[tegra_clk_uartd] = { .dt_id = TEGRA114_CLK_UARTD, .present = true },
- [tegra_clk_sdmmc2] = { .dt_id = TEGRA114_CLK_SDMMC2, .present = true },
+ [tegra_clk_sdmmc2_8] = { .dt_id = TEGRA114_CLK_SDMMC2, .present = true },
[tegra_clk_i2s1] = { .dt_id = TEGRA114_CLK_I2S1, .present = true },
[tegra_clk_i2c1] = { .dt_id = TEGRA114_CLK_I2C1, .present = true },
[tegra_clk_ndflash] = { .dt_id = TEGRA114_CLK_NDFLASH, .present = true },
- [tegra_clk_sdmmc1] = { .dt_id = TEGRA114_CLK_SDMMC1, .present = true },
- [tegra_clk_sdmmc4] = { .dt_id = TEGRA114_CLK_SDMMC4, .present = true },
+ [tegra_clk_sdmmc1_8] = { .dt_id = TEGRA114_CLK_SDMMC1, .present = true },
+ [tegra_clk_sdmmc4_8] = { .dt_id = TEGRA114_CLK_SDMMC4, .present = true },
[tegra_clk_pwm] = { .dt_id = TEGRA114_CLK_PWM, .present = true },
[tegra_clk_i2s0] = { .dt_id = TEGRA114_CLK_I2S0, .present = true },
[tegra_clk_i2s2] = { .dt_id = TEGRA114_CLK_I2S2, .present = true },
@@ -723,7 +723,7 @@ static struct tegra_clk tegra114_clks[tegra_clk_max] __initdata = {
[tegra_clk_bsev] = { .dt_id = TEGRA114_CLK_BSEV, .present = true },
[tegra_clk_i2c3] = { .dt_id = TEGRA114_CLK_I2C3, .present = true },
[tegra_clk_sbc4_8] = { .dt_id = TEGRA114_CLK_SBC4, .present = true },
- [tegra_clk_sdmmc3] = { .dt_id = TEGRA114_CLK_SDMMC3, .present = true },
+ [tegra_clk_sdmmc3_8] = { .dt_id = TEGRA114_CLK_SDMMC3, .present = true },
[tegra_clk_owr] = { .dt_id = TEGRA114_CLK_OWR, .present = true },
[tegra_clk_csite] = { .dt_id = TEGRA114_CLK_CSITE, .present = true },
[tegra_clk_la] = { .dt_id = TEGRA114_CLK_LA, .present = true },
diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index aff86b5bc745..166e02f16c8a 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -516,11 +516,11 @@ static struct div_nmp pllp_nmp = {
};
static struct tegra_clk_pll_freq_table pll_p_freq_table[] = {
- {12000000, 216000000, 432, 12, 1, 8},
- {13000000, 216000000, 432, 13, 1, 8},
- {16800000, 216000000, 360, 14, 1, 8},
- {19200000, 216000000, 360, 16, 1, 8},
- {26000000, 216000000, 432, 26, 1, 8},
+ {12000000, 408000000, 408, 12, 0, 8},
+ {13000000, 408000000, 408, 13, 0, 8},
+ {16800000, 408000000, 340, 14, 0, 8},
+ {19200000, 408000000, 340, 16, 0, 8},
+ {26000000, 408000000, 408, 26, 0, 8},
{0, 0, 0, 0, 0, 0},
};
@@ -570,6 +570,15 @@ static struct tegra_clk_pll_params pll_a_params = {
.flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_USE_LOCK,
};
+static struct div_nmp plld_nmp = {
+ .divm_shift = 0,
+ .divm_width = 5,
+ .divn_shift = 8,
+ .divn_width = 11,
+ .divp_shift = 20,
+ .divp_width = 3,
+};
+
static struct tegra_clk_pll_freq_table pll_d_freq_table[] = {
{12000000, 216000000, 864, 12, 4, 12},
{13000000, 216000000, 864, 13, 4, 12},
@@ -603,19 +612,18 @@ static struct tegra_clk_pll_params pll_d_params = {
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
.lock_delay = 1000,
- .div_nmp = &pllp_nmp,
+ .div_nmp = &plld_nmp,
.freq_table = pll_d_freq_table,
.flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_SET_LFCON |
TEGRA_PLL_USE_LOCK,
};
static struct tegra_clk_pll_freq_table tegra124_pll_d2_freq_table[] = {
- { 12000000, 148500000, 99, 1, 8},
- { 12000000, 594000000, 99, 1, 1},
- { 13000000, 594000000, 91, 1, 1}, /* actual: 591.5 MHz */
- { 16800000, 594000000, 71, 1, 1}, /* actual: 596.4 MHz */
- { 19200000, 594000000, 62, 1, 1}, /* actual: 595.2 MHz */
- { 26000000, 594000000, 91, 2, 1}, /* actual: 591.5 MHz */
+ { 12000000, 594000000, 99, 1, 2},
+ { 13000000, 594000000, 91, 1, 2}, /* actual: 591.5 MHz */
+ { 16800000, 594000000, 71, 1, 2}, /* actual: 596.4 MHz */
+ { 19200000, 594000000, 62, 1, 2}, /* actual: 595.2 MHz */
+ { 26000000, 594000000, 91, 2, 2}, /* actual: 591.5 MHz */
{ 0, 0, 0, 0, 0, 0 },
};
@@ -753,21 +761,19 @@ static struct tegra_clk tegra124_clks[tegra_clk_max] __initdata = {
[tegra_clk_rtc] = { .dt_id = TEGRA124_CLK_RTC, .present = true },
[tegra_clk_timer] = { .dt_id = TEGRA124_CLK_TIMER, .present = true },
[tegra_clk_uarta] = { .dt_id = TEGRA124_CLK_UARTA, .present = true },
- [tegra_clk_sdmmc2] = { .dt_id = TEGRA124_CLK_SDMMC2, .present = true },
+ [tegra_clk_sdmmc2_8] = { .dt_id = TEGRA124_CLK_SDMMC2, .present = true },
[tegra_clk_i2s1] = { .dt_id = TEGRA124_CLK_I2S1, .present = true },
[tegra_clk_i2c1] = { .dt_id = TEGRA124_CLK_I2C1, .present = true },
[tegra_clk_ndflash] = { .dt_id = TEGRA124_CLK_NDFLASH, .present = true },
- [tegra_clk_sdmmc1] = { .dt_id = TEGRA124_CLK_SDMMC1, .present = true },
- [tegra_clk_sdmmc4] = { .dt_id = TEGRA124_CLK_SDMMC4, .present = true },
+ [tegra_clk_sdmmc1_8] = { .dt_id = TEGRA124_CLK_SDMMC1, .present = true },
+ [tegra_clk_sdmmc4_8] = { .dt_id = TEGRA124_CLK_SDMMC4, .present = true },
[tegra_clk_pwm] = { .dt_id = TEGRA124_CLK_PWM, .present = true },
[tegra_clk_i2s2] = { .dt_id = TEGRA124_CLK_I2S2, .present = true },
- [tegra_clk_gr2d] = { .dt_id = TEGRA124_CLK_GR_2D, .present = true },
[tegra_clk_usbd] = { .dt_id = TEGRA124_CLK_USBD, .present = true },
[tegra_clk_isp_8] = { .dt_id = TEGRA124_CLK_ISP, .present = true },
- [tegra_clk_gr3d] = { .dt_id = TEGRA124_CLK_GR_3D, .present = true },
[tegra_clk_disp2] = { .dt_id = TEGRA124_CLK_DISP2, .present = true },
[tegra_clk_disp1] = { .dt_id = TEGRA124_CLK_DISP1, .present = true },
- [tegra_clk_host1x] = { .dt_id = TEGRA124_CLK_HOST1X, .present = true },
+ [tegra_clk_host1x_8] = { .dt_id = TEGRA124_CLK_HOST1X, .present = true },
[tegra_clk_vcp] = { .dt_id = TEGRA124_CLK_VCP, .present = true },
[tegra_clk_i2s0] = { .dt_id = TEGRA124_CLK_I2S0, .present = true },
[tegra_clk_apbdma] = { .dt_id = TEGRA124_CLK_APBDMA, .present = true },
@@ -794,7 +800,7 @@ static struct tegra_clk tegra124_clks[tegra_clk_max] __initdata = {
[tegra_clk_uartd] = { .dt_id = TEGRA124_CLK_UARTD, .present = true },
[tegra_clk_i2c3] = { .dt_id = TEGRA124_CLK_I2C3, .present = true },
[tegra_clk_sbc4] = { .dt_id = TEGRA124_CLK_SBC4, .present = true },
- [tegra_clk_sdmmc3] = { .dt_id = TEGRA124_CLK_SDMMC3, .present = true },
+ [tegra_clk_sdmmc3_8] = { .dt_id = TEGRA124_CLK_SDMMC3, .present = true },
[tegra_clk_pcie] = { .dt_id = TEGRA124_CLK_PCIE, .present = true },
[tegra_clk_owr] = { .dt_id = TEGRA124_CLK_OWR, .present = true },
[tegra_clk_afi] = { .dt_id = TEGRA124_CLK_AFI, .present = true },
@@ -1286,9 +1292,9 @@ static void __init tegra124_pll_init(void __iomem *clk_base,
clk_register_clkdev(clk, "pll_d2", NULL);
clks[TEGRA124_CLK_PLL_D2] = clk;
- /* PLLD2_OUT0 ?? */
+ /* PLLD2_OUT0 */
clk = clk_register_fixed_factor(NULL, "pll_d2_out0", "pll_d2",
- CLK_SET_RATE_PARENT, 1, 2);
+ CLK_SET_RATE_PARENT, 1, 1);
clk_register_clkdev(clk, "pll_d2_out0", NULL);
clks[TEGRA124_CLK_PLL_D2_OUT0] = clk;
diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c
index dbace152b2fa..dace2b1b5ae6 100644
--- a/drivers/clk/tegra/clk-tegra20.c
+++ b/drivers/clk/tegra/clk-tegra20.c
@@ -574,6 +574,8 @@ static struct tegra_clk tegra20_clks[tegra_clk_max] __initdata = {
[tegra_clk_tvdac] = { .dt_id = TEGRA20_CLK_TVDAC, .present = true },
[tegra_clk_vi_sensor] = { .dt_id = TEGRA20_CLK_VI_SENSOR, .present = true },
[tegra_clk_afi] = { .dt_id = TEGRA20_CLK_AFI, .present = true },
+ [tegra_clk_fuse] = { .dt_id = TEGRA20_CLK_FUSE, .present = true },
+ [tegra_clk_kfuse] = { .dt_id = TEGRA20_CLK_KFUSE, .present = true },
};
static unsigned long tegra20_clk_measure_input_freq(void)
diff --git a/drivers/clk/ti/clk-33xx.c b/drivers/clk/ti/clk-33xx.c
index 776ee4594bd4..028b33783d38 100644
--- a/drivers/clk/ti/clk-33xx.c
+++ b/drivers/clk/ti/clk-33xx.c
@@ -34,7 +34,6 @@ static struct ti_dt_clk am33xx_clks[] = {
DT_CLK(NULL, "dpll_core_m5_ck", "dpll_core_m5_ck"),
DT_CLK(NULL, "dpll_core_m6_ck", "dpll_core_m6_ck"),
DT_CLK(NULL, "dpll_mpu_ck", "dpll_mpu_ck"),
- DT_CLK("cpu0", NULL, "dpll_mpu_ck"),
DT_CLK(NULL, "dpll_mpu_m2_ck", "dpll_mpu_m2_ck"),
DT_CLK(NULL, "dpll_ddr_ck", "dpll_ddr_ck"),
DT_CLK(NULL, "dpll_ddr_m2_ck", "dpll_ddr_m2_ck"),
diff --git a/drivers/clk/ti/clk-44xx.c b/drivers/clk/ti/clk-44xx.c
index ae00218b5da3..02517a8206bd 100644
--- a/drivers/clk/ti/clk-44xx.c
+++ b/drivers/clk/ti/clk-44xx.c
@@ -222,7 +222,6 @@ static struct ti_dt_clk omap44xx_clks[] = {
DT_CLK(NULL, "auxclk5_src_ck", "auxclk5_src_ck"),
DT_CLK(NULL, "auxclk5_ck", "auxclk5_ck"),
DT_CLK(NULL, "auxclkreq5_ck", "auxclkreq5_ck"),
- DT_CLK("50000000.gpmc", "fck", "dummy_ck"),
DT_CLK("omap_i2c.1", "ick", "dummy_ck"),
DT_CLK("omap_i2c.2", "ick", "dummy_ck"),
DT_CLK("omap_i2c.3", "ick", "dummy_ck"),
diff --git a/drivers/clk/ti/clk-54xx.c b/drivers/clk/ti/clk-54xx.c
index 0ef9f581286b..08f3d1b915b3 100644
--- a/drivers/clk/ti/clk-54xx.c
+++ b/drivers/clk/ti/clk-54xx.c
@@ -182,7 +182,6 @@ static struct ti_dt_clk omap54xx_clks[] = {
DT_CLK(NULL, "auxclk3_src_ck", "auxclk3_src_ck"),
DT_CLK(NULL, "auxclk3_ck", "auxclk3_ck"),
DT_CLK(NULL, "auxclkreq3_ck", "auxclkreq3_ck"),
- DT_CLK(NULL, "gpmc_ck", "dummy_ck"),
DT_CLK("omap_i2c.1", "ick", "dummy_ck"),
DT_CLK("omap_i2c.2", "ick", "dummy_ck"),
DT_CLK("omap_i2c.3", "ick", "dummy_ck"),
diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c
index 9977653f2d63..f7e40734c819 100644
--- a/drivers/clk/ti/clk-7xx.c
+++ b/drivers/clk/ti/clk-7xx.c
@@ -262,7 +262,6 @@ static struct ti_dt_clk dra7xx_clks[] = {
DT_CLK(NULL, "vip1_gclk_mux", "vip1_gclk_mux"),
DT_CLK(NULL, "vip2_gclk_mux", "vip2_gclk_mux"),
DT_CLK(NULL, "vip3_gclk_mux", "vip3_gclk_mux"),
- DT_CLK(NULL, "gpmc_ck", "dummy_ck"),
DT_CLK("omap_i2c.1", "ick", "dummy_ck"),
DT_CLK("omap_i2c.2", "ick", "dummy_ck"),
DT_CLK("omap_i2c.3", "ick", "dummy_ck"),
diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c
index a15e445570b2..e6aa10db7bba 100644
--- a/drivers/clk/ti/divider.c
+++ b/drivers/clk/ti/divider.c
@@ -112,7 +112,7 @@ static unsigned long ti_clk_divider_recalc_rate(struct clk_hw *hw,
return parent_rate;
}
- return parent_rate / div;
+ return DIV_ROUND_UP(parent_rate, div);
}
/*
@@ -182,7 +182,7 @@ static int ti_clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
}
parent_rate = __clk_round_rate(__clk_get_parent(hw->clk),
MULT_ROUND_UP(rate, i));
- now = parent_rate / i;
+ now = DIV_ROUND_UP(parent_rate, i);
if (now <= rate && now > best) {
bestdiv = i;
best = now;
@@ -205,7 +205,7 @@ static long ti_clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
int div;
div = ti_clk_divider_bestdiv(hw, rate, prate);
- return *prate / div;
+ return DIV_ROUND_UP(*prate, div);
}
static int ti_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -216,7 +216,7 @@ static int ti_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long flags = 0;
u32 val;
- div = parent_rate / rate;
+ div = DIV_ROUND_UP(parent_rate, rate);
value = _get_val(divider, div);
if (value > div_mask(divider))
diff --git a/drivers/clk/ux500/u8500_of_clk.c b/drivers/clk/ux500/u8500_of_clk.c
index cdeff299de26..7b55ef89baa5 100644
--- a/drivers/clk/ux500/u8500_of_clk.c
+++ b/drivers/clk/ux500/u8500_of_clk.c
@@ -29,7 +29,8 @@ static struct clk *prcc_kclk[(PRCC_NUM_PERIPH_CLUSTERS + 1) * PRCC_PERIPHS_PER_C
#define PRCC_KCLK_STORE(clk, base, bit) \
prcc_kclk[(base * PRCC_PERIPHS_PER_CLUSTER) + bit] = clk
-struct clk *ux500_twocell_get(struct of_phandle_args *clkspec, void *data)
+static struct clk *ux500_twocell_get(struct of_phandle_args *clkspec,
+ void *data)
{
struct clk **clk_data = data;
unsigned int base, bit;
diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index 8cbfcf88fae3..a820b0cfcf57 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -33,7 +33,7 @@ struct clk_icst {
struct clk_hw hw;
void __iomem *vcoreg;
void __iomem *lockreg;
- const struct icst_params *params;
+ struct icst_params *params;
unsigned long rate;
};
@@ -84,6 +84,8 @@ static unsigned long icst_recalc_rate(struct clk_hw *hw,
struct clk_icst *icst = to_icst(hw);
struct icst_vco vco;
+ if (parent_rate)
+ icst->params->ref = parent_rate;
vco = vco_get(icst->vcoreg);
icst->rate = icst_hz(icst->params, vco);
return icst->rate;
@@ -105,6 +107,8 @@ static int icst_set_rate(struct clk_hw *hw, unsigned long rate,
struct clk_icst *icst = to_icst(hw);
struct icst_vco vco;
+ if (parent_rate)
+ icst->params->ref = parent_rate;
vco = icst_hz_to_vco(icst->params, rate);
icst->rate = icst_hz(icst->params, vco);
vco_set(icst->lockreg, icst->vcoreg, vco);
@@ -120,24 +124,33 @@ static const struct clk_ops icst_ops = {
struct clk *icst_clk_register(struct device *dev,
const struct clk_icst_desc *desc,
const char *name,
+ const char *parent_name,
void __iomem *base)
{
struct clk *clk;
struct clk_icst *icst;
struct clk_init_data init;
+ struct icst_params *pclone;
icst = kzalloc(sizeof(struct clk_icst), GFP_KERNEL);
if (!icst) {
pr_err("could not allocate ICST clock!\n");
return ERR_PTR(-ENOMEM);
}
+
+ pclone = kmemdup(desc->params, sizeof(*pclone), GFP_KERNEL);
+ if (!pclone) {
+ pr_err("could not clone ICST params\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
init.name = name;
init.ops = &icst_ops;
init.flags = CLK_IS_ROOT;
- init.parent_names = NULL;
- init.num_parents = 0;
+ init.parent_names = (parent_name ? &parent_name : NULL);
+ init.num_parents = (parent_name ? 1 : 0);
icst->hw.init = &init;
- icst->params = desc->params;
+ icst->params = pclone;
icst->vcoreg = base + desc->vco_offset;
icst->lockreg = base + desc->lock_offset;
diff --git a/drivers/clk/versatile/clk-icst.h b/drivers/clk/versatile/clk-icst.h
index be99dd0da785..04e6f0aef588 100644
--- a/drivers/clk/versatile/clk-icst.h
+++ b/drivers/clk/versatile/clk-icst.h
@@ -16,4 +16,5 @@ struct clk_icst_desc {
struct clk *icst_clk_register(struct device *dev,
const struct clk_icst_desc *desc,
const char *name,
+ const char *parent_name,
void __iomem *base);
diff --git a/drivers/clk/versatile/clk-impd1.c b/drivers/clk/versatile/clk-impd1.c
index 844f8d711a12..31b44f025f9e 100644
--- a/drivers/clk/versatile/clk-impd1.c
+++ b/drivers/clk/versatile/clk-impd1.c
@@ -13,10 +13,12 @@
#include <linux/io.h>
#include <linux/platform_data/clk-integrator.h>
-#include <mach/impd1.h>
-
#include "clk-icst.h"
+#define IMPD1_OSC1 0x00
+#define IMPD1_OSC2 0x04
+#define IMPD1_LOCK 0x08
+
struct impd1_clk {
char *vco1name;
struct clk *vco1clk;
@@ -93,13 +95,15 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
imc = &impd1_clks[id];
imc->vco1name = kasprintf(GFP_KERNEL, "lm%x-vco1", id);
- clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, base);
+ clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, NULL,
+ base);
imc->vco1clk = clk;
imc->clks[0] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
/* VCO2 is also called "CLK2" */
imc->vco2name = kasprintf(GFP_KERNEL, "lm%x-vco2", id);
- clk = icst_clk_register(NULL, &impd1_icst2_desc, imc->vco2name, base);
+ clk = icst_clk_register(NULL, &impd1_icst2_desc, imc->vco2name, NULL,
+ base);
imc->vco2clk = clk;
/* MMCI uses CLK2 right off */
diff --git a/drivers/clk/versatile/clk-integrator.c b/drivers/clk/versatile/clk-integrator.c
index bda8967e09c2..734c4b8fe6ab 100644
--- a/drivers/clk/versatile/clk-integrator.c
+++ b/drivers/clk/versatile/clk-integrator.c
@@ -10,21 +10,17 @@
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/err.h>
-#include <linux/platform_data/clk-integrator.h>
-
-#include <mach/hardware.h>
-#include <mach/platform.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
#include "clk-icst.h"
-/*
- * Implementation of the ARM Integrator/AP and Integrator/CP clock tree.
- * Inspired by portions of:
- * plat-versatile/clock.c and plat-versatile/include/plat/clock.h
- */
+#define INTEGRATOR_HDR_LOCK_OFFSET 0x14
-static const struct icst_params cp_auxvco_params = {
- .ref = 24000000,
+/* Base offset for the core module */
+static void __iomem *cm_base;
+
+static const struct icst_params cp_auxosc_params = {
.vco_max = ICST525_VCO_MAX_5V,
.vco_min = ICST525_VCO_MIN,
.vd_min = 8,
@@ -35,50 +31,39 @@ static const struct icst_params cp_auxvco_params = {
.idx2s = icst525_idx2s,
};
-static const struct clk_icst_desc __initdata cp_icst_desc = {
- .params = &cp_auxvco_params,
+static const struct clk_icst_desc __initdata cm_auxosc_desc = {
+ .params = &cp_auxosc_params,
.vco_offset = 0x1c,
.lock_offset = INTEGRATOR_HDR_LOCK_OFFSET,
};
-/*
- * integrator_clk_init() - set up the integrator clock tree
- * @is_cp: pass true if it's the Integrator/CP else AP is assumed
- */
-void __init integrator_clk_init(bool is_cp)
+static void __init of_integrator_cm_osc_setup(struct device_node *np)
{
- struct clk *clk;
-
- /* APB clock dummy */
- clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
- clk_register_clkdev(clk, "apb_pclk", NULL);
-
- /* UART reference clock */
- clk = clk_register_fixed_rate(NULL, "uartclk", NULL, CLK_IS_ROOT,
- 14745600);
- clk_register_clkdev(clk, NULL, "uart0");
- clk_register_clkdev(clk, NULL, "uart1");
- if (is_cp)
- clk_register_clkdev(clk, NULL, "mmci");
-
- /* 24 MHz clock */
- clk = clk_register_fixed_rate(NULL, "clk24mhz", NULL, CLK_IS_ROOT,
- 24000000);
- clk_register_clkdev(clk, NULL, "kmi0");
- clk_register_clkdev(clk, NULL, "kmi1");
- if (!is_cp)
- clk_register_clkdev(clk, NULL, "ap_timer");
+ struct clk *clk = ERR_PTR(-EINVAL);
+ const char *clk_name = np->name;
+ const struct clk_icst_desc *desc = &cm_auxosc_desc;
+ const char *parent_name;
- if (!is_cp)
- return;
+ if (!cm_base) {
+ /* Remap the core module base if not done yet */
+ struct device_node *parent;
- /* 1 MHz clock */
- clk = clk_register_fixed_rate(NULL, "clk1mhz", NULL, CLK_IS_ROOT,
- 1000000);
- clk_register_clkdev(clk, NULL, "sp804");
+ parent = of_get_parent(np);
+ if (!np) {
+ pr_err("no parent on core module clock\n");
+ return;
+ }
+ cm_base = of_iomap(parent, 0);
+ if (!cm_base) {
+ pr_err("could not remap core module base\n");
+ return;
+ }
+ }
- /* ICST VCO clock used on the Integrator/CP CLCD */
- clk = icst_clk_register(NULL, &cp_icst_desc, "icst",
- __io_address(INTEGRATOR_HDR_BASE));
- clk_register_clkdev(clk, NULL, "clcd");
+ parent_name = of_clk_get_parent_name(np, 0);
+ clk = icst_clk_register(NULL, desc, clk_name, parent_name, cm_base);
+ if (!IS_ERR(clk))
+ of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
+CLK_OF_DECLARE(integrator_cm_auxosc_clk,
+ "arm,integrator-cm-auxosc", of_integrator_cm_osc_setup);
diff --git a/drivers/clk/versatile/clk-realview.c b/drivers/clk/versatile/clk-realview.c
index 747e7b31117c..c8b523117fb7 100644
--- a/drivers/clk/versatile/clk-realview.c
+++ b/drivers/clk/versatile/clk-realview.c
@@ -85,10 +85,10 @@ void __init realview_clk_init(void __iomem *sysbase, bool is_pb1176)
/* ICST VCO clock */
if (is_pb1176)
clk = icst_clk_register(NULL, &realview_osc0_desc,
- "osc0", sysbase);
+ "osc0", NULL, sysbase);
else
clk = icst_clk_register(NULL, &realview_osc4_desc,
- "osc4", sysbase);
+ "osc4", NULL, sysbase);
clk_register_clkdev(clk, NULL, "dev:clcd");
clk_register_clkdev(clk, NULL, "issp:clcd");
diff --git a/drivers/clk/zynq/clkc.c b/drivers/clk/zynq/clkc.c
index 09dd0173ea0a..52c09afdcfb7 100644
--- a/drivers/clk/zynq/clkc.c
+++ b/drivers/clk/zynq/clkc.c
@@ -21,34 +21,35 @@
#include <linux/clk/zynq.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/io.h>
-static void __iomem *zynq_slcr_base_priv;
-
-#define SLCR_ARMPLL_CTRL (zynq_slcr_base_priv + 0x100)
-#define SLCR_DDRPLL_CTRL (zynq_slcr_base_priv + 0x104)
-#define SLCR_IOPLL_CTRL (zynq_slcr_base_priv + 0x108)
-#define SLCR_PLL_STATUS (zynq_slcr_base_priv + 0x10c)
-#define SLCR_ARM_CLK_CTRL (zynq_slcr_base_priv + 0x120)
-#define SLCR_DDR_CLK_CTRL (zynq_slcr_base_priv + 0x124)
-#define SLCR_DCI_CLK_CTRL (zynq_slcr_base_priv + 0x128)
-#define SLCR_APER_CLK_CTRL (zynq_slcr_base_priv + 0x12c)
-#define SLCR_GEM0_CLK_CTRL (zynq_slcr_base_priv + 0x140)
-#define SLCR_GEM1_CLK_CTRL (zynq_slcr_base_priv + 0x144)
-#define SLCR_SMC_CLK_CTRL (zynq_slcr_base_priv + 0x148)
-#define SLCR_LQSPI_CLK_CTRL (zynq_slcr_base_priv + 0x14c)
-#define SLCR_SDIO_CLK_CTRL (zynq_slcr_base_priv + 0x150)
-#define SLCR_UART_CLK_CTRL (zynq_slcr_base_priv + 0x154)
-#define SLCR_SPI_CLK_CTRL (zynq_slcr_base_priv + 0x158)
-#define SLCR_CAN_CLK_CTRL (zynq_slcr_base_priv + 0x15c)
-#define SLCR_CAN_MIOCLK_CTRL (zynq_slcr_base_priv + 0x160)
-#define SLCR_DBG_CLK_CTRL (zynq_slcr_base_priv + 0x164)
-#define SLCR_PCAP_CLK_CTRL (zynq_slcr_base_priv + 0x168)
-#define SLCR_FPGA0_CLK_CTRL (zynq_slcr_base_priv + 0x170)
-#define SLCR_621_TRUE (zynq_slcr_base_priv + 0x1c4)
-#define SLCR_SWDT_CLK_SEL (zynq_slcr_base_priv + 0x304)
+static void __iomem *zynq_clkc_base;
+
+#define SLCR_ARMPLL_CTRL (zynq_clkc_base + 0x00)
+#define SLCR_DDRPLL_CTRL (zynq_clkc_base + 0x04)
+#define SLCR_IOPLL_CTRL (zynq_clkc_base + 0x08)
+#define SLCR_PLL_STATUS (zynq_clkc_base + 0x0c)
+#define SLCR_ARM_CLK_CTRL (zynq_clkc_base + 0x20)
+#define SLCR_DDR_CLK_CTRL (zynq_clkc_base + 0x24)
+#define SLCR_DCI_CLK_CTRL (zynq_clkc_base + 0x28)
+#define SLCR_APER_CLK_CTRL (zynq_clkc_base + 0x2c)
+#define SLCR_GEM0_CLK_CTRL (zynq_clkc_base + 0x40)
+#define SLCR_GEM1_CLK_CTRL (zynq_clkc_base + 0x44)
+#define SLCR_SMC_CLK_CTRL (zynq_clkc_base + 0x48)
+#define SLCR_LQSPI_CLK_CTRL (zynq_clkc_base + 0x4c)
+#define SLCR_SDIO_CLK_CTRL (zynq_clkc_base + 0x50)
+#define SLCR_UART_CLK_CTRL (zynq_clkc_base + 0x54)
+#define SLCR_SPI_CLK_CTRL (zynq_clkc_base + 0x58)
+#define SLCR_CAN_CLK_CTRL (zynq_clkc_base + 0x5c)
+#define SLCR_CAN_MIOCLK_CTRL (zynq_clkc_base + 0x60)
+#define SLCR_DBG_CLK_CTRL (zynq_clkc_base + 0x64)
+#define SLCR_PCAP_CLK_CTRL (zynq_clkc_base + 0x68)
+#define SLCR_FPGA0_CLK_CTRL (zynq_clkc_base + 0x70)
+#define SLCR_621_TRUE (zynq_clkc_base + 0xc4)
+#define SLCR_SWDT_CLK_SEL (zynq_clkc_base + 0x204)
#define NUM_MIO_PINS 54
@@ -148,7 +149,7 @@ static void __init zynq_clk_register_fclk(enum zynq_clk fclk,
clks[fclk] = clk_register_gate(NULL, clk_name,
div1_name, CLK_SET_RATE_PARENT, fclk_gate_reg,
0, CLK_GATE_SET_TO_DISABLE, fclk_gate_lock);
- enable_reg = readl(fclk_gate_reg) & 1;
+ enable_reg = clk_readl(fclk_gate_reg) & 1;
if (enable && !enable_reg) {
if (clk_prepare_enable(clks[fclk]))
pr_warn("%s: FCLK%u enable failed\n", __func__,
@@ -277,7 +278,7 @@ static void __init zynq_clk_setup(struct device_node *np)
SLCR_IOPLL_CTRL, 4, 1, 0, &iopll_lock);
/* CPU clocks */
- tmp = readl(SLCR_621_TRUE) & 1;
+ tmp = clk_readl(SLCR_621_TRUE) & 1;
clk = clk_register_mux(NULL, "cpu_mux", cpu_parents, 4,
CLK_SET_RATE_NO_REPARENT, SLCR_ARM_CLK_CTRL, 4, 2, 0,
&armclk_lock);
@@ -569,8 +570,42 @@ static void __init zynq_clk_setup(struct device_node *np)
CLK_OF_DECLARE(zynq_clkc, "xlnx,ps7-clkc", zynq_clk_setup);
-void __init zynq_clock_init(void __iomem *slcr_base)
+void __init zynq_clock_init(void)
{
- zynq_slcr_base_priv = slcr_base;
- of_clk_init(NULL);
+ struct device_node *np;
+ struct device_node *slcr;
+ struct resource res;
+
+ np = of_find_compatible_node(NULL, NULL, "xlnx,ps7-clkc");
+ if (!np) {
+ pr_err("%s: clkc node not found\n", __func__);
+ goto np_err;
+ }
+
+ if (of_address_to_resource(np, 0, &res)) {
+ pr_err("%s: failed to get resource\n", np->name);
+ goto np_err;
+ }
+
+ slcr = of_get_parent(np);
+
+ if (slcr->data) {
+ zynq_clkc_base = (__force void __iomem *)slcr->data + res.start;
+ } else {
+ pr_err("%s: Unable to get I/O memory\n", np->name);
+ of_node_put(slcr);
+ goto np_err;
+ }
+
+ pr_info("%s: clkc starts at %p\n", __func__, zynq_clkc_base);
+
+ of_node_put(slcr);
+ of_node_put(np);
+
+ return;
+
+np_err:
+ of_node_put(np);
+ BUG();
+ return;
}
diff --git a/drivers/clk/zynq/pll.c b/drivers/clk/zynq/pll.c
index 3226f54fa595..cec97596fe65 100644
--- a/drivers/clk/zynq/pll.c
+++ b/drivers/clk/zynq/pll.c
@@ -90,7 +90,7 @@ static unsigned long zynq_pll_recalc_rate(struct clk_hw *hw,
* makes probably sense to redundantly save fbdiv in the struct
* zynq_pll to save the IO access.
*/
- fbdiv = (readl(clk->pll_ctrl) & PLLCTRL_FBDIV_MASK) >>
+ fbdiv = (clk_readl(clk->pll_ctrl) & PLLCTRL_FBDIV_MASK) >>
PLLCTRL_FBDIV_SHIFT;
return parent_rate * fbdiv;
@@ -112,7 +112,7 @@ static int zynq_pll_is_enabled(struct clk_hw *hw)
spin_lock_irqsave(clk->lock, flags);
- reg = readl(clk->pll_ctrl);
+ reg = clk_readl(clk->pll_ctrl);
spin_unlock_irqrestore(clk->lock, flags);
@@ -138,10 +138,10 @@ static int zynq_pll_enable(struct clk_hw *hw)
/* Power up PLL and wait for lock */
spin_lock_irqsave(clk->lock, flags);
- reg = readl(clk->pll_ctrl);
+ reg = clk_readl(clk->pll_ctrl);
reg &= ~(PLLCTRL_RESET_MASK | PLLCTRL_PWRDWN_MASK);
- writel(reg, clk->pll_ctrl);
- while (!(readl(clk->pll_status) & (1 << clk->lockbit)))
+ clk_writel(reg, clk->pll_ctrl);
+ while (!(clk_readl(clk->pll_status) & (1 << clk->lockbit)))
;
spin_unlock_irqrestore(clk->lock, flags);
@@ -168,9 +168,9 @@ static void zynq_pll_disable(struct clk_hw *hw)
/* shut down PLL */
spin_lock_irqsave(clk->lock, flags);
- reg = readl(clk->pll_ctrl);
+ reg = clk_readl(clk->pll_ctrl);
reg |= PLLCTRL_RESET_MASK | PLLCTRL_PWRDWN_MASK;
- writel(reg, clk->pll_ctrl);
+ clk_writel(reg, clk->pll_ctrl);
spin_unlock_irqrestore(clk->lock, flags);
}
@@ -225,9 +225,9 @@ struct clk *clk_register_zynq_pll(const char *name, const char *parent,
spin_lock_irqsave(pll->lock, flags);
- reg = readl(pll->pll_ctrl);
+ reg = clk_readl(pll->pll_ctrl);
reg &= ~PLLCTRL_BPQUAL_MASK;
- writel(reg, pll->pll_ctrl);
+ clk_writel(reg, pll->pll_ctrl);
spin_unlock_irqrestore(pll->lock, flags);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.