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-rw-r--r--arch/arm/mach-prima2/clock.c1189
1 files changed, 925 insertions, 264 deletions
diff --git a/arch/arm/mach-prima2/clock.c b/arch/arm/mach-prima2/clock.c
index aebad7e565cf..517874fa6858 100644
--- a/arch/arm/mach-prima2/clock.c
+++ b/arch/arm/mach-prima2/clock.c
@@ -8,16 +8,12 @@
#include <linux/module.h>
#include <linux/bitops.h>
-#include <linux/err.h>
-#include <linux/errno.h>
#include <linux/io.h>
-#include <linux/clkdev.h>
#include <linux/clk.h>
-#include <linux/spinlock.h>
-#include <linux/of.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
#include <linux/of_address.h>
-#include <asm/mach/map.h>
-#include <mach/map.h>
+#include <linux/syscore_ops.h>
#define SIRFSOC_CLKC_CLK_EN0 0x0000
#define SIRFSOC_CLKC_CLK_EN1 0x0004
@@ -29,7 +25,7 @@
#define SIRFSOC_CLKC_DSP_CFG 0x0028
#define SIRFSOC_CLKC_GFX_CFG 0x002c
#define SIRFSOC_CLKC_MM_CFG 0x0030
-#define SIRFSOC_LKC_LCD_CFG 0x0034
+#define SIRFSOC_CLKC_LCD_CFG 0x0034
#define SIRFSOC_CLKC_MMC_CFG 0x0038
#define SIRFSOC_CLKC_PLL1_CFG0 0x0040
#define SIRFSOC_CLKC_PLL2_CFG0 0x0044
@@ -40,68 +36,82 @@
#define SIRFSOC_CLKC_PLL1_CFG2 0x0058
#define SIRFSOC_CLKC_PLL2_CFG2 0x005c
#define SIRFSOC_CLKC_PLL3_CFG2 0x0060
+#define SIRFSOC_USBPHY_PLL_CTRL 0x0008
+#define SIRFSOC_USBPHY_PLL_POWERDOWN BIT(1)
+#define SIRFSOC_USBPHY_PLL_BYPASS BIT(2)
+#define SIRFSOC_USBPHY_PLL_LOCK BIT(3)
-#define SIRFSOC_CLOCK_VA_BASE SIRFSOC_VA(0x005000)
+static void *sirfsoc_clk_vbase, *sirfsoc_rsc_vbase;
#define KHZ 1000
#define MHZ (KHZ * KHZ)
-struct clk_ops {
- unsigned long (*get_rate)(struct clk *clk);
- long (*round_rate)(struct clk *clk, unsigned long rate);
- int (*set_rate)(struct clk *clk, unsigned long rate);
- int (*enable)(struct clk *clk);
- int (*disable)(struct clk *clk);
- struct clk *(*get_parent)(struct clk *clk);
- int (*set_parent)(struct clk *clk, struct clk *parent);
+/*
+ * SiRFprimaII clock controller
+ * - 2 oscillators: osc-26MHz, rtc-32.768KHz
+ * - 3 standard configurable plls: pll1, pll2 & pll3
+ * - 2 exclusive plls: usb phy pll and sata phy pll
+ * - 8 clock domains: cpu/cpudiv, mem/memdiv, sys/io, dsp, graphic, multimedia,
+ * display and sdphy.
+ * Each clock domain can select its own clock source from five clock sources,
+ * X_XIN, X_XINW, PLL1, PLL2 and PLL3. The domain clock is used as the source
+ * clock of the group clock.
+ * - dsp domain: gps, mf
+ * - io domain: dmac, nand, audio, uart, i2c, spi, usp, pwm, pulse
+ * - sys domain: security
+ */
+
+struct clk_pll {
+ struct clk_hw hw;
+ unsigned short regofs; /* register offset */
};
-struct clk {
- struct clk *parent; /* parent clk */
- unsigned long rate; /* clock rate in Hz */
- signed char usage; /* clock enable count */
+#define to_pllclk(_hw) container_of(_hw, struct clk_pll, hw)
+
+struct clk_dmn {
+ struct clk_hw hw;
signed char enable_bit; /* enable bit: 0 ~ 63 */
unsigned short regofs; /* register offset */
- struct clk_ops *ops; /* clock operation */
};
-static DEFINE_SPINLOCK(clocks_lock);
+#define to_dmnclk(_hw) container_of(_hw, struct clk_dmn, hw)
+
+struct clk_std {
+ struct clk_hw hw;
+ signed char enable_bit; /* enable bit: 0 ~ 63 */
+};
+
+#define to_stdclk(_hw) container_of(_hw, struct clk_std, hw)
+
+static int std_clk_is_enabled(struct clk_hw *hw);
+static int std_clk_enable(struct clk_hw *hw);
+static void std_clk_disable(struct clk_hw *hw);
static inline unsigned long clkc_readl(unsigned reg)
{
- return readl(SIRFSOC_CLOCK_VA_BASE + reg);
+ return readl(sirfsoc_clk_vbase + reg);
}
static inline void clkc_writel(u32 val, unsigned reg)
{
- writel(val, SIRFSOC_CLOCK_VA_BASE + reg);
+ writel(val, sirfsoc_clk_vbase + reg);
}
/*
- * osc_rtc - real time oscillator - 32.768KHz
- * osc_sys - high speed oscillator - 26MHz
- */
-
-static struct clk clk_rtc = {
- .rate = 32768,
-};
-
-static struct clk clk_osc = {
- .rate = 26 * MHZ,
-};
-
-/*
* std pll
*/
-static unsigned long std_pll_get_rate(struct clk *clk)
+
+static unsigned long pll_clk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
{
- unsigned long fin = clk_get_rate(clk->parent);
+ unsigned long fin = parent_rate;
+ struct clk_pll *clk = to_pllclk(hw);
u32 regcfg2 = clk->regofs + SIRFSOC_CLKC_PLL1_CFG2 -
SIRFSOC_CLKC_PLL1_CFG0;
if (clkc_readl(regcfg2) & BIT(2)) {
/* pll bypass mode */
- clk->rate = fin;
+ return fin;
} else {
/* fout = fin * nf / nr / od */
u32 cfg0 = clkc_readl(clk->regofs);
@@ -109,14 +119,41 @@ static unsigned long std_pll_get_rate(struct clk *clk)
u32 nr = ((cfg0 >> 13) & (BIT(6) - 1)) + 1;
u32 od = ((cfg0 >> 19) & (BIT(4) - 1)) + 1;
WARN_ON(fin % MHZ);
- clk->rate = fin / MHZ * nf / nr / od * MHZ;
+ return fin / MHZ * nf / nr / od * MHZ;
}
+}
+
+static long pll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ unsigned long fin, nf, nr, od;
+
+ /*
+ * fout = fin * nf / (nr * od);
+ * set od = 1, nr = fin/MHz, so fout = nf * MHz
+ */
+ rate = rate - rate % MHZ;
+
+ nf = rate / MHZ;
+ if (nf > BIT(13))
+ nf = BIT(13);
+ if (nf < 1)
+ nf = 1;
- return clk->rate;
+ fin = *parent_rate;
+
+ nr = fin / MHZ;
+ if (nr > BIT(6))
+ nr = BIT(6);
+ od = 1;
+
+ return fin * nf / (nr * od);
}
-static int std_pll_set_rate(struct clk *clk, unsigned long rate)
+static int pll_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
{
+ struct clk_pll *clk = to_pllclk(hw);
unsigned long fin, nf, nr, od, reg;
/*
@@ -128,7 +165,7 @@ static int std_pll_set_rate(struct clk *clk, unsigned long rate)
if (unlikely((rate % MHZ) || nf > BIT(13) || nf < 1))
return -EINVAL;
- fin = clk_get_rate(clk->parent);
+ fin = parent_rate;
BUG_ON(fin < MHZ);
nr = fin / MHZ;
@@ -146,76 +183,163 @@ static int std_pll_set_rate(struct clk *clk, unsigned long rate)
while (!(clkc_readl(reg) & BIT(6)))
cpu_relax();
- clk->rate = 0; /* set to zero will force recalculation */
return 0;
}
static struct clk_ops std_pll_ops = {
- .get_rate = std_pll_get_rate,
- .set_rate = std_pll_set_rate,
+ .recalc_rate = pll_clk_recalc_rate,
+ .round_rate = pll_clk_round_rate,
+ .set_rate = pll_clk_set_rate,
};
-static struct clk clk_pll1 = {
- .parent = &clk_osc,
- .regofs = SIRFSOC_CLKC_PLL1_CFG0,
+static const char *pll_clk_parents[] = {
+ "osc",
+};
+
+static struct clk_init_data clk_pll1_init = {
+ .name = "pll1",
.ops = &std_pll_ops,
+ .parent_names = pll_clk_parents,
+ .num_parents = ARRAY_SIZE(pll_clk_parents),
};
-static struct clk clk_pll2 = {
- .parent = &clk_osc,
- .regofs = SIRFSOC_CLKC_PLL2_CFG0,
+static struct clk_init_data clk_pll2_init = {
+ .name = "pll2",
.ops = &std_pll_ops,
+ .parent_names = pll_clk_parents,
+ .num_parents = ARRAY_SIZE(pll_clk_parents),
};
-static struct clk clk_pll3 = {
- .parent = &clk_osc,
- .regofs = SIRFSOC_CLKC_PLL3_CFG0,
+static struct clk_init_data clk_pll3_init = {
+ .name = "pll3",
.ops = &std_pll_ops,
+ .parent_names = pll_clk_parents,
+ .num_parents = ARRAY_SIZE(pll_clk_parents),
+};
+
+static struct clk_pll clk_pll1 = {
+ .regofs = SIRFSOC_CLKC_PLL1_CFG0,
+ .hw = {
+ .init = &clk_pll1_init,
+ },
+};
+
+static struct clk_pll clk_pll2 = {
+ .regofs = SIRFSOC_CLKC_PLL2_CFG0,
+ .hw = {
+ .init = &clk_pll2_init,
+ },
+};
+
+static struct clk_pll clk_pll3 = {
+ .regofs = SIRFSOC_CLKC_PLL3_CFG0,
+ .hw = {
+ .init = &clk_pll3_init,
+ },
};
/*
- * clock domains - cpu, mem, sys/io
+ * usb uses specified pll
*/
-static struct clk clk_mem;
+static int usb_pll_clk_enable(struct clk_hw *hw)
+{
+ u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+ reg &= ~(SIRFSOC_USBPHY_PLL_POWERDOWN | SIRFSOC_USBPHY_PLL_BYPASS);
+ writel(reg, sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+ while (!(readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL) &
+ SIRFSOC_USBPHY_PLL_LOCK))
+ cpu_relax();
+
+ return 0;
+}
+
+static void usb_pll_clk_disable(struct clk_hw *clk)
+{
+ u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+ reg |= (SIRFSOC_USBPHY_PLL_POWERDOWN | SIRFSOC_USBPHY_PLL_BYPASS);
+ writel(reg, sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+}
-static struct clk *dmn_get_parent(struct clk *clk)
+static unsigned long usb_pll_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
{
- struct clk *clks[] = {
- &clk_osc, &clk_rtc, &clk_pll1, &clk_pll2, &clk_pll3
- };
+ u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+ return (reg & SIRFSOC_USBPHY_PLL_BYPASS) ? parent_rate : 48*MHZ;
+}
+
+static struct clk_ops usb_pll_ops = {
+ .enable = usb_pll_clk_enable,
+ .disable = usb_pll_clk_disable,
+ .recalc_rate = usb_pll_clk_recalc_rate,
+};
+
+static struct clk_init_data clk_usb_pll_init = {
+ .name = "usb_pll",
+ .ops = &usb_pll_ops,
+ .parent_names = pll_clk_parents,
+ .num_parents = ARRAY_SIZE(pll_clk_parents),
+};
+
+static struct clk_hw usb_pll_clk_hw = {
+ .init = &clk_usb_pll_init,
+};
+
+/*
+ * clock domains - cpu, mem, sys/io, dsp, gfx
+ */
+
+static const char *dmn_clk_parents[] = {
+ "rtc",
+ "osc",
+ "pll1",
+ "pll2",
+ "pll3",
+};
+
+static u8 dmn_clk_get_parent(struct clk_hw *hw)
+{
+ struct clk_dmn *clk = to_dmnclk(hw);
u32 cfg = clkc_readl(clk->regofs);
+
+ /* parent of io domain can only be pll3 */
+ if (strcmp(hw->init->name, "io") == 0)
+ return 4;
+
WARN_ON((cfg & (BIT(3) - 1)) > 4);
- return clks[cfg & (BIT(3) - 1)];
+
+ return cfg & (BIT(3) - 1);
}
-static int dmn_set_parent(struct clk *clk, struct clk *parent)
+static int dmn_clk_set_parent(struct clk_hw *hw, u8 parent)
{
- const struct clk *clks[] = {
- &clk_osc, &clk_rtc, &clk_pll1, &clk_pll2, &clk_pll3
- };
+ struct clk_dmn *clk = to_dmnclk(hw);
u32 cfg = clkc_readl(clk->regofs);
- int i;
- for (i = 0; i < ARRAY_SIZE(clks); i++) {
- if (clks[i] == parent) {
- cfg &= ~(BIT(3) - 1);
- clkc_writel(cfg | i, clk->regofs);
- /* BIT(3) - switching status: 1 - busy, 0 - done */
- while (clkc_readl(clk->regofs) & BIT(3))
- cpu_relax();
- return 0;
- }
- }
- return -EINVAL;
+
+ /* parent of io domain can only be pll3 */
+ if (strcmp(hw->init->name, "io") == 0)
+ return -EINVAL;
+
+ cfg &= ~(BIT(3) - 1);
+ clkc_writel(cfg | parent, clk->regofs);
+ /* BIT(3) - switching status: 1 - busy, 0 - done */
+ while (clkc_readl(clk->regofs) & BIT(3))
+ cpu_relax();
+
+ return 0;
}
-static unsigned long dmn_get_rate(struct clk *clk)
+static unsigned long dmn_clk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+
{
- unsigned long fin = clk_get_rate(clk->parent);
+ unsigned long fin = parent_rate;
+ struct clk_dmn *clk = to_dmnclk(hw);
+
u32 cfg = clkc_readl(clk->regofs);
+
if (cfg & BIT(24)) {
/* fcd bypass mode */
- clk->rate = fin;
+ return fin;
} else {
/*
* wait count: bit[19:16], hold count: bit[23:20]
@@ -223,19 +347,40 @@ static unsigned long dmn_get_rate(struct clk *clk)
u32 wait = (cfg >> 16) & (BIT(4) - 1);
u32 hold = (cfg >> 20) & (BIT(4) - 1);
- clk->rate = fin / (wait + hold + 2);
+ return fin / (wait + hold + 2);
}
+}
+
+static long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ unsigned long fin;
+ unsigned ratio, wait, hold;
+ unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
+
+ fin = *parent_rate;
+ ratio = fin / rate;
+
+ if (ratio < 2)
+ ratio = 2;
+ if (ratio > BIT(bits + 1))
+ ratio = BIT(bits + 1);
- return clk->rate;
+ wait = (ratio >> 1) - 1;
+ hold = ratio - wait - 2;
+
+ return fin / (wait + hold + 2);
}
-static int dmn_set_rate(struct clk *clk, unsigned long rate)
+static int dmn_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
{
+ struct clk_dmn *clk = to_dmnclk(hw);
unsigned long fin;
unsigned ratio, wait, hold, reg;
- unsigned bits = (clk == &clk_mem) ? 3 : 4;
+ unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
- fin = clk_get_rate(clk->parent);
+ fin = parent_rate;
ratio = fin / rate;
if (unlikely(ratio < 2 || ratio > BIT(bits + 1)))
@@ -255,256 +400,772 @@ static int dmn_set_rate(struct clk *clk, unsigned long rate)
while (clkc_readl(clk->regofs) & BIT(25))
cpu_relax();
- clk->rate = 0; /* set to zero will force recalculation */
-
return 0;
}
-/*
- * cpu clock has no FCD register in Prima2, can only change pll
- */
-static int cpu_set_rate(struct clk *clk, unsigned long rate)
-{
- int ret1, ret2;
- struct clk *cur_parent, *tmp_parent;
+static struct clk_ops msi_ops = {
+ .set_rate = dmn_clk_set_rate,
+ .round_rate = dmn_clk_round_rate,
+ .recalc_rate = dmn_clk_recalc_rate,
+ .set_parent = dmn_clk_set_parent,
+ .get_parent = dmn_clk_get_parent,
+};
- cur_parent = dmn_get_parent(clk);
- BUG_ON(cur_parent == NULL || cur_parent->usage > 1);
+static struct clk_init_data clk_mem_init = {
+ .name = "mem",
+ .ops = &msi_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
- /* switch to tmp pll before setting parent clock's rate */
- tmp_parent = cur_parent == &clk_pll1 ? &clk_pll2 : &clk_pll1;
- ret1 = dmn_set_parent(clk, tmp_parent);
- BUG_ON(ret1);
+static struct clk_dmn clk_mem = {
+ .regofs = SIRFSOC_CLKC_MEM_CFG,
+ .hw = {
+ .init = &clk_mem_init,
+ },
+};
- ret2 = clk_set_rate(cur_parent, rate);
+static struct clk_init_data clk_sys_init = {
+ .name = "sys",
+ .ops = &msi_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+ .flags = CLK_SET_RATE_GATE,
+};
- ret1 = dmn_set_parent(clk, cur_parent);
+static struct clk_dmn clk_sys = {
+ .regofs = SIRFSOC_CLKC_SYS_CFG,
+ .hw = {
+ .init = &clk_sys_init,
+ },
+};
- clk->rate = 0; /* set to zero will force recalculation */
+static struct clk_init_data clk_io_init = {
+ .name = "io",
+ .ops = &msi_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
- return ret2 ? ret2 : ret1;
-}
+static struct clk_dmn clk_io = {
+ .regofs = SIRFSOC_CLKC_IO_CFG,
+ .hw = {
+ .init = &clk_io_init,
+ },
+};
static struct clk_ops cpu_ops = {
- .get_parent = dmn_get_parent,
- .set_parent = dmn_set_parent,
- .set_rate = cpu_set_rate,
+ .set_parent = dmn_clk_set_parent,
+ .get_parent = dmn_clk_get_parent,
};
-static struct clk clk_cpu = {
- .parent = &clk_pll1,
- .regofs = SIRFSOC_CLKC_CPU_CFG,
+static struct clk_init_data clk_cpu_init = {
+ .name = "cpu",
.ops = &cpu_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+ .flags = CLK_SET_RATE_PARENT,
};
+static struct clk_dmn clk_cpu = {
+ .regofs = SIRFSOC_CLKC_CPU_CFG,
+ .hw = {
+ .init = &clk_cpu_init,
+ },
+};
-static struct clk_ops msi_ops = {
- .set_rate = dmn_set_rate,
- .get_rate = dmn_get_rate,
- .set_parent = dmn_set_parent,
- .get_parent = dmn_get_parent,
+static struct clk_ops dmn_ops = {
+ .is_enabled = std_clk_is_enabled,
+ .enable = std_clk_enable,
+ .disable = std_clk_disable,
+ .set_rate = dmn_clk_set_rate,
+ .round_rate = dmn_clk_round_rate,
+ .recalc_rate = dmn_clk_recalc_rate,
+ .set_parent = dmn_clk_set_parent,
+ .get_parent = dmn_clk_get_parent,
};
-static struct clk clk_mem = {
- .parent = &clk_pll2,
- .regofs = SIRFSOC_CLKC_MEM_CFG,
- .ops = &msi_ops,
+/* dsp, gfx, mm, lcd and vpp domain */
+
+static struct clk_init_data clk_dsp_init = {
+ .name = "dsp",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
};
-static struct clk clk_sys = {
- .parent = &clk_pll3,
- .regofs = SIRFSOC_CLKC_SYS_CFG,
- .ops = &msi_ops,
+static struct clk_dmn clk_dsp = {
+ .regofs = SIRFSOC_CLKC_DSP_CFG,
+ .enable_bit = 0,
+ .hw = {
+ .init = &clk_dsp_init,
+ },
};
-static struct clk clk_io = {
- .parent = &clk_pll3,
- .regofs = SIRFSOC_CLKC_IO_CFG,
- .ops = &msi_ops,
+static struct clk_init_data clk_gfx_init = {
+ .name = "gfx",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
};
-/*
- * on-chip clock sets
- */
-static struct clk_lookup onchip_clks[] = {
- {
- .dev_id = "rtc",
- .clk = &clk_rtc,
- }, {
- .dev_id = "osc",
- .clk = &clk_osc,
- }, {
- .dev_id = "pll1",
- .clk = &clk_pll1,
- }, {
- .dev_id = "pll2",
- .clk = &clk_pll2,
- }, {
- .dev_id = "pll3",
- .clk = &clk_pll3,
- }, {
- .dev_id = "cpu",
- .clk = &clk_cpu,
- }, {
- .dev_id = "mem",
- .clk = &clk_mem,
- }, {
- .dev_id = "sys",
- .clk = &clk_sys,
- }, {
- .dev_id = "io",
- .clk = &clk_io,
- },
-};
-
-int clk_enable(struct clk *clk)
-{
- unsigned long flags;
+static struct clk_dmn clk_gfx = {
+ .regofs = SIRFSOC_CLKC_GFX_CFG,
+ .enable_bit = 8,
+ .hw = {
+ .init = &clk_gfx_init,
+ },
+};
- if (unlikely(IS_ERR_OR_NULL(clk)))
- return -EINVAL;
+static struct clk_init_data clk_mm_init = {
+ .name = "mm",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
- if (clk->parent)
- clk_enable(clk->parent);
+static struct clk_dmn clk_mm = {
+ .regofs = SIRFSOC_CLKC_MM_CFG,
+ .enable_bit = 9,
+ .hw = {
+ .init = &clk_mm_init,
+ },
+};
- spin_lock_irqsave(&clocks_lock, flags);
- if (!clk->usage++ && clk->ops && clk->ops->enable)
- clk->ops->enable(clk);
- spin_unlock_irqrestore(&clocks_lock, flags);
- return 0;
-}
-EXPORT_SYMBOL(clk_enable);
+static struct clk_init_data clk_lcd_init = {
+ .name = "lcd",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
-void clk_disable(struct clk *clk)
-{
- unsigned long flags;
+static struct clk_dmn clk_lcd = {
+ .regofs = SIRFSOC_CLKC_LCD_CFG,
+ .enable_bit = 10,
+ .hw = {
+ .init = &clk_lcd_init,
+ },
+};
- if (unlikely(IS_ERR_OR_NULL(clk)))
- return;
+static struct clk_init_data clk_vpp_init = {
+ .name = "vpp",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
- WARN_ON(!clk->usage);
+static struct clk_dmn clk_vpp = {
+ .regofs = SIRFSOC_CLKC_LCD_CFG,
+ .enable_bit = 11,
+ .hw = {
+ .init = &clk_vpp_init,
+ },
+};
- spin_lock_irqsave(&clocks_lock, flags);
- if (--clk->usage == 0 && clk->ops && clk->ops->disable)
- clk->ops->disable(clk);
- spin_unlock_irqrestore(&clocks_lock, flags);
+static struct clk_init_data clk_mmc01_init = {
+ .name = "mmc01",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
- if (clk->parent)
- clk_disable(clk->parent);
-}
-EXPORT_SYMBOL(clk_disable);
+static struct clk_dmn clk_mmc01 = {
+ .regofs = SIRFSOC_CLKC_MMC_CFG,
+ .enable_bit = 59,
+ .hw = {
+ .init = &clk_mmc01_init,
+ },
+};
-unsigned long clk_get_rate(struct clk *clk)
-{
- if (unlikely(IS_ERR_OR_NULL(clk)))
- return 0;
+static struct clk_init_data clk_mmc23_init = {
+ .name = "mmc23",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
- if (clk->rate)
- return clk->rate;
+static struct clk_dmn clk_mmc23 = {
+ .regofs = SIRFSOC_CLKC_MMC_CFG,
+ .enable_bit = 60,
+ .hw = {
+ .init = &clk_mmc23_init,
+ },
+};
- if (clk->ops && clk->ops->get_rate)
- return clk->ops->get_rate(clk);
+static struct clk_init_data clk_mmc45_init = {
+ .name = "mmc45",
+ .ops = &dmn_ops,
+ .parent_names = dmn_clk_parents,
+ .num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
- return clk_get_rate(clk->parent);
-}
-EXPORT_SYMBOL(clk_get_rate);
+static struct clk_dmn clk_mmc45 = {
+ .regofs = SIRFSOC_CLKC_MMC_CFG,
+ .enable_bit = 61,
+ .hw = {
+ .init = &clk_mmc45_init,
+ },
+};
-long clk_round_rate(struct clk *clk, unsigned long rate)
+/*
+ * peripheral controllers in io domain
+ */
+
+static int std_clk_is_enabled(struct clk_hw *hw)
{
- if (unlikely(IS_ERR_OR_NULL(clk)))
- return 0;
+ u32 reg;
+ int bit;
+ struct clk_std *clk = to_stdclk(hw);
- if (clk->ops && clk->ops->round_rate)
- return clk->ops->round_rate(clk, rate);
+ bit = clk->enable_bit % 32;
+ reg = clk->enable_bit / 32;
+ reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
- return 0;
+ return !!(clkc_readl(reg) & BIT(bit));
}
-EXPORT_SYMBOL(clk_round_rate);
-int clk_set_rate(struct clk *clk, unsigned long rate)
+static int std_clk_enable(struct clk_hw *hw)
{
- if (unlikely(IS_ERR_OR_NULL(clk)))
- return -EINVAL;
+ u32 val, reg;
+ int bit;
+ struct clk_std *clk = to_stdclk(hw);
- if (!clk->ops || !clk->ops->set_rate)
- return -EINVAL;
+ BUG_ON(clk->enable_bit < 0 || clk->enable_bit > 63);
+
+ bit = clk->enable_bit % 32;
+ reg = clk->enable_bit / 32;
+ reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
- return clk->ops->set_rate(clk, rate);
+ val = clkc_readl(reg) | BIT(bit);
+ clkc_writel(val, reg);
+ return 0;
}
-EXPORT_SYMBOL(clk_set_rate);
-int clk_set_parent(struct clk *clk, struct clk *parent)
+static void std_clk_disable(struct clk_hw *hw)
{
- int ret;
- unsigned long flags;
+ u32 val, reg;
+ int bit;
+ struct clk_std *clk = to_stdclk(hw);
- if (unlikely(IS_ERR_OR_NULL(clk)))
- return -EINVAL;
+ BUG_ON(clk->enable_bit < 0 || clk->enable_bit > 63);
- if (!clk->ops || !clk->ops->set_parent)
- return -EINVAL;
+ bit = clk->enable_bit % 32;
+ reg = clk->enable_bit / 32;
+ reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
- spin_lock_irqsave(&clocks_lock, flags);
- ret = clk->ops->set_parent(clk, parent);
- if (!ret) {
- parent->usage += clk->usage;
- clk->parent->usage -= clk->usage;
- BUG_ON(clk->parent->usage < 0);
- clk->parent = parent;
- }
- spin_unlock_irqrestore(&clocks_lock, flags);
- return ret;
+ val = clkc_readl(reg) & ~BIT(bit);
+ clkc_writel(val, reg);
}
-EXPORT_SYMBOL(clk_set_parent);
-struct clk *clk_get_parent(struct clk *clk)
-{
- unsigned long flags;
+static const char *std_clk_io_parents[] = {
+ "io",
+};
- if (unlikely(IS_ERR_OR_NULL(clk)))
- return NULL;
+static struct clk_ops ios_ops = {
+ .is_enabled = std_clk_is_enabled,
+ .enable = std_clk_enable,
+ .disable = std_clk_disable,
+};
- if (!clk->ops || !clk->ops->get_parent)
- return clk->parent;
+static struct clk_init_data clk_dmac0_init = {
+ .name = "dmac0",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
- spin_lock_irqsave(&clocks_lock, flags);
- clk->parent = clk->ops->get_parent(clk);
- spin_unlock_irqrestore(&clocks_lock, flags);
- return clk->parent;
-}
-EXPORT_SYMBOL(clk_get_parent);
+static struct clk_std clk_dmac0 = {
+ .enable_bit = 32,
+ .hw = {
+ .init = &clk_dmac0_init,
+ },
+};
-static void __init sirfsoc_clk_init(void)
-{
- clkdev_add_table(onchip_clks, ARRAY_SIZE(onchip_clks));
-}
+static struct clk_init_data clk_dmac1_init = {
+ .name = "dmac1",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_dmac1 = {
+ .enable_bit = 33,
+ .hw = {
+ .init = &clk_dmac1_init,
+ },
+};
+
+static struct clk_init_data clk_nand_init = {
+ .name = "nand",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_nand = {
+ .enable_bit = 34,
+ .hw = {
+ .init = &clk_nand_init,
+ },
+};
+
+static struct clk_init_data clk_audio_init = {
+ .name = "audio",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_audio = {
+ .enable_bit = 35,
+ .hw = {
+ .init = &clk_audio_init,
+ },
+};
+
+static struct clk_init_data clk_uart0_init = {
+ .name = "uart0",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_uart0 = {
+ .enable_bit = 36,
+ .hw = {
+ .init = &clk_uart0_init,
+ },
+};
+
+static struct clk_init_data clk_uart1_init = {
+ .name = "uart1",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_uart1 = {
+ .enable_bit = 37,
+ .hw = {
+ .init = &clk_uart1_init,
+ },
+};
+
+static struct clk_init_data clk_uart2_init = {
+ .name = "uart2",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_uart2 = {
+ .enable_bit = 38,
+ .hw = {
+ .init = &clk_uart2_init,
+ },
+};
+
+static struct clk_init_data clk_usp0_init = {
+ .name = "usp0",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_usp0 = {
+ .enable_bit = 39,
+ .hw = {
+ .init = &clk_usp0_init,
+ },
+};
+
+static struct clk_init_data clk_usp1_init = {
+ .name = "usp1",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_usp1 = {
+ .enable_bit = 40,
+ .hw = {
+ .init = &clk_usp1_init,
+ },
+};
+
+static struct clk_init_data clk_usp2_init = {
+ .name = "usp2",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_usp2 = {
+ .enable_bit = 41,
+ .hw = {
+ .init = &clk_usp2_init,
+ },
+};
+
+static struct clk_init_data clk_vip_init = {
+ .name = "vip",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_vip = {
+ .enable_bit = 42,
+ .hw = {
+ .init = &clk_vip_init,
+ },
+};
+
+static struct clk_init_data clk_spi0_init = {
+ .name = "spi0",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_spi0 = {
+ .enable_bit = 43,
+ .hw = {
+ .init = &clk_spi0_init,
+ },
+};
+
+static struct clk_init_data clk_spi1_init = {
+ .name = "spi1",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_spi1 = {
+ .enable_bit = 44,
+ .hw = {
+ .init = &clk_spi1_init,
+ },
+};
+
+static struct clk_init_data clk_tsc_init = {
+ .name = "tsc",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_tsc = {
+ .enable_bit = 45,
+ .hw = {
+ .init = &clk_tsc_init,
+ },
+};
+
+static struct clk_init_data clk_i2c0_init = {
+ .name = "i2c0",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_i2c0 = {
+ .enable_bit = 46,
+ .hw = {
+ .init = &clk_i2c0_init,
+ },
+};
+
+static struct clk_init_data clk_i2c1_init = {
+ .name = "i2c1",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_i2c1 = {
+ .enable_bit = 47,
+ .hw = {
+ .init = &clk_i2c1_init,
+ },
+};
+
+static struct clk_init_data clk_pwmc_init = {
+ .name = "pwmc",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_pwmc = {
+ .enable_bit = 48,
+ .hw = {
+ .init = &clk_pwmc_init,
+ },
+};
+
+static struct clk_init_data clk_efuse_init = {
+ .name = "efuse",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_efuse = {
+ .enable_bit = 49,
+ .hw = {
+ .init = &clk_efuse_init,
+ },
+};
+
+static struct clk_init_data clk_pulse_init = {
+ .name = "pulse",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_pulse = {
+ .enable_bit = 50,
+ .hw = {
+ .init = &clk_pulse_init,
+ },
+};
+
+static const char *std_clk_dsp_parents[] = {
+ "dsp",
+};
+
+static struct clk_init_data clk_gps_init = {
+ .name = "gps",
+ .ops = &ios_ops,
+ .parent_names = std_clk_dsp_parents,
+ .num_parents = ARRAY_SIZE(std_clk_dsp_parents),
+};
+
+static struct clk_std clk_gps = {
+ .enable_bit = 1,
+ .hw = {
+ .init = &clk_gps_init,
+ },
+};
+
+static struct clk_init_data clk_mf_init = {
+ .name = "mf",
+ .ops = &ios_ops,
+ .parent_names = std_clk_io_parents,
+ .num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_mf = {
+ .enable_bit = 2,
+ .hw = {
+ .init = &clk_mf_init,
+ },
+};
+
+static const char *std_clk_sys_parents[] = {
+ "sys",
+};
+
+static struct clk_init_data clk_security_init = {
+ .name = "mf",
+ .ops = &ios_ops,
+ .parent_names = std_clk_sys_parents,
+ .num_parents = ARRAY_SIZE(std_clk_sys_parents),
+};
+
+static struct clk_std clk_security = {
+ .enable_bit = 19,
+ .hw = {
+ .init = &clk_security_init,
+ },
+};
+
+static const char *std_clk_usb_parents[] = {
+ "usb_pll",
+};
+
+static struct clk_init_data clk_usb0_init = {
+ .name = "usb0",
+ .ops = &ios_ops,
+ .parent_names = std_clk_usb_parents,
+ .num_parents = ARRAY_SIZE(std_clk_usb_parents),
+};
+
+static struct clk_std clk_usb0 = {
+ .enable_bit = 16,
+ .hw = {
+ .init = &clk_usb0_init,
+ },
+};
+
+static struct clk_init_data clk_usb1_init = {
+ .name = "usb1",
+ .ops = &ios_ops,
+ .parent_names = std_clk_usb_parents,
+ .num_parents = ARRAY_SIZE(std_clk_usb_parents),
+};
+
+static struct clk_std clk_usb1 = {
+ .enable_bit = 17,
+ .hw = {
+ .init = &clk_usb1_init,
+ },
+};
static struct of_device_id clkc_ids[] = {
{ .compatible = "sirf,prima2-clkc" },
{},
};
+static struct of_device_id rsc_ids[] = {
+ { .compatible = "sirf,prima2-rsc" },
+ {},
+};
+
void __init sirfsoc_of_clk_init(void)
{
+ struct clk *clk;
struct device_node *np;
- struct resource res;
- struct map_desc sirfsoc_clkc_iodesc = {
- .virtual = SIRFSOC_CLOCK_VA_BASE,
- .type = MT_DEVICE,
- };
np = of_find_matching_node(NULL, clkc_ids);
if (!np)
panic("unable to find compatible clkc node in dtb\n");
- if (of_address_to_resource(np, 0, &res))
- panic("unable to find clkc range in dtb");
+ sirfsoc_clk_vbase = of_iomap(np, 0);
+ if (!sirfsoc_clk_vbase)
+ panic("unable to map clkc registers\n");
+
of_node_put(np);
- sirfsoc_clkc_iodesc.pfn = __phys_to_pfn(res.start);
- sirfsoc_clkc_iodesc.length = 1 + res.end - res.start;
+ np = of_find_matching_node(NULL, rsc_ids);
+ if (!np)
+ panic("unable to find compatible rsc node in dtb\n");
+
+ sirfsoc_rsc_vbase = of_iomap(np, 0);
+ if (!sirfsoc_rsc_vbase)
+ panic("unable to map rsc registers\n");
+
+ of_node_put(np);
- iotable_init(&sirfsoc_clkc_iodesc, 1);
- sirfsoc_clk_init();
+ /* These are always available (RTC and 26MHz OSC)*/
+ clk = clk_register_fixed_rate(NULL, "rtc", NULL,
+ CLK_IS_ROOT, 32768);
+ BUG_ON(!clk);
+ clk = clk_register_fixed_rate(NULL, "osc", NULL,
+ CLK_IS_ROOT, 26000000);
+ BUG_ON(!clk);
+
+ clk = clk_register(NULL, &clk_pll1.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_pll2.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_pll3.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_mem.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_sys.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_security.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b8030000.security");
+ clk = clk_register(NULL, &clk_dsp.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_gps.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "a8010000.gps");
+ clk = clk_register(NULL, &clk_mf.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_io.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "io");
+ clk = clk_register(NULL, &clk_cpu.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "cpu");
+ clk = clk_register(NULL, &clk_uart0.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0050000.uart");
+ clk = clk_register(NULL, &clk_uart1.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0060000.uart");
+ clk = clk_register(NULL, &clk_uart2.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0070000.uart");
+ clk = clk_register(NULL, &clk_tsc.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0110000.tsc");
+ clk = clk_register(NULL, &clk_i2c0.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00e0000.i2c");
+ clk = clk_register(NULL, &clk_i2c1.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00f0000.i2c");
+ clk = clk_register(NULL, &clk_spi0.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00d0000.spi");
+ clk = clk_register(NULL, &clk_spi1.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0170000.spi");
+ clk = clk_register(NULL, &clk_pwmc.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0130000.pwm");
+ clk = clk_register(NULL, &clk_efuse.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0140000.efusesys");
+ clk = clk_register(NULL, &clk_pulse.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0150000.pulsec");
+ clk = clk_register(NULL, &clk_dmac0.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00b0000.dma-controller");
+ clk = clk_register(NULL, &clk_dmac1.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0160000.dma-controller");
+ clk = clk_register(NULL, &clk_nand.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0030000.nand");
+ clk = clk_register(NULL, &clk_audio.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0040000.audio");
+ clk = clk_register(NULL, &clk_usp0.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0080000.usp");
+ clk = clk_register(NULL, &clk_usp1.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b0090000.usp");
+ clk = clk_register(NULL, &clk_usp2.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00a0000.usp");
+ clk = clk_register(NULL, &clk_vip.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00c0000.vip");
+ clk = clk_register(NULL, &clk_gfx.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "98000000.graphics");
+ clk = clk_register(NULL, &clk_mm.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "a0000000.multimedia");
+ clk = clk_register(NULL, &clk_lcd.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "90010000.display");
+ clk = clk_register(NULL, &clk_vpp.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "90020000.vpp");
+ clk = clk_register(NULL, &clk_mmc01.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_mmc23.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_mmc45.hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &usb_pll_clk_hw);
+ BUG_ON(!clk);
+ clk = clk_register(NULL, &clk_usb0.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00e0000.usb");
+ clk = clk_register(NULL, &clk_usb1.hw);
+ BUG_ON(!clk);
+ clk_register_clkdev(clk, NULL, "b00f0000.usb");
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.