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-rw-r--r--arch/arm/mach-at91/Makefile34
-rw-r--r--arch/arm/mach-at91/at91rm9200.c15
-rw-r--r--arch/arm/mach-at91/at91sam9.c91
-rw-r--r--arch/arm/mach-at91/generic.h8
-rw-r--r--arch/arm/mach-at91/pm.c199
-rw-r--r--arch/arm/mach-at91/pm.h24
-rw-r--r--arch/arm/mach-at91/pm_data-offsets.c13
-rw-r--r--arch/arm/mach-at91/pm_suspend.S31
-rw-r--r--arch/arm/mach-at91/sama5.c52
-rw-r--r--arch/arm/mach-at91/soc.c142
-rw-r--r--arch/arm/mach-at91/soc.h91
11 files changed, 175 insertions, 525 deletions
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index c5bbf8bb8c0f..cfd8f60a9268 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -1,7 +1,6 @@
#
# Makefile for the linux kernel.
#
-obj-y := soc.o
# CPU-specific support
obj-$(CONFIG_SOC_AT91RM9200) += at91rm9200.o
@@ -18,3 +17,36 @@ endif
ifeq ($(CONFIG_PM_DEBUG),y)
CFLAGS_pm.o += -DDEBUG
endif
+
+# Default sed regexp - multiline due to syntax constraints
+define sed-y
+ "/^->/{s:->#\(.*\):/* \1 */:; \
+ s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
+ s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
+ s:->::; p;}"
+endef
+
+# Use filechk to avoid rebuilds when a header changes, but the resulting file
+# does not
+define filechk_offsets
+ (set -e; \
+ echo "#ifndef $2"; \
+ echo "#define $2"; \
+ echo "/*"; \
+ echo " * DO NOT MODIFY."; \
+ echo " *"; \
+ echo " * This file was generated by Kbuild"; \
+ echo " */"; \
+ echo ""; \
+ sed -ne $(sed-y); \
+ echo ""; \
+ echo "#endif" )
+endef
+
+arch/arm/mach-at91/pm_data-offsets.s: arch/arm/mach-at91/pm_data-offsets.c
+ $(call if_changed_dep,cc_s_c)
+
+include/generated/at91_pm_data-offsets.h: arch/arm/mach-at91/pm_data-offsets.s FORCE
+ $(call filechk,offsets,__PM_DATA_OFFSETS_H__)
+
+arch/arm/mach-at91/pm_suspend.o: include/generated/at91_pm_data-offsets.h
diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index d068ec3cd1f6..656ad409a253 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -14,23 +14,10 @@
#include <asm/mach/arch.h>
#include "generic.h"
-#include "soc.h"
-
-static const struct at91_soc rm9200_socs[] = {
- AT91_SOC(AT91RM9200_CIDR_MATCH, 0, "at91rm9200 BGA", "at91rm9200"),
- { /* sentinel */ },
-};
static void __init at91rm9200_dt_device_init(void)
{
- struct soc_device *soc;
- struct device *soc_dev = NULL;
-
- soc = at91_soc_init(rm9200_socs);
- if (soc != NULL)
- soc_dev = soc_device_to_device(soc);
-
- of_platform_default_populate(NULL, NULL, soc_dev);
+ of_platform_default_populate(NULL, NULL, NULL);
at91rm9200_pm_init();
}
diff --git a/arch/arm/mach-at91/at91sam9.c b/arch/arm/mach-at91/at91sam9.c
index ba28e9cc584d..3dbdef4d3cbf 100644
--- a/arch/arm/mach-at91/at91sam9.c
+++ b/arch/arm/mach-at91/at91sam9.c
@@ -14,60 +14,12 @@
#include <asm/system_misc.h>
#include "generic.h"
-#include "soc.h"
-static const struct at91_soc at91sam9_socs[] = {
- AT91_SOC(AT91SAM9260_CIDR_MATCH, 0, "at91sam9260", NULL),
- AT91_SOC(AT91SAM9261_CIDR_MATCH, 0, "at91sam9261", NULL),
- AT91_SOC(AT91SAM9263_CIDR_MATCH, 0, "at91sam9263", NULL),
- AT91_SOC(AT91SAM9G20_CIDR_MATCH, 0, "at91sam9g20", NULL),
- AT91_SOC(AT91SAM9RL64_CIDR_MATCH, 0, "at91sam9rl64", NULL),
- AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9M11_EXID_MATCH,
- "at91sam9m11", "at91sam9g45"),
- AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9M10_EXID_MATCH,
- "at91sam9m10", "at91sam9g45"),
- AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9G46_EXID_MATCH,
- "at91sam9g46", "at91sam9g45"),
- AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9G45_EXID_MATCH,
- "at91sam9g45", "at91sam9g45"),
- AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G15_EXID_MATCH,
- "at91sam9g15", "at91sam9x5"),
- AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G35_EXID_MATCH,
- "at91sam9g35", "at91sam9x5"),
- AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9X35_EXID_MATCH,
- "at91sam9x35", "at91sam9x5"),
- AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G25_EXID_MATCH,
- "at91sam9g25", "at91sam9x5"),
- AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9X25_EXID_MATCH,
- "at91sam9x25", "at91sam9x5"),
- AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9CN12_EXID_MATCH,
- "at91sam9cn12", "at91sam9n12"),
- AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9N12_EXID_MATCH,
- "at91sam9n12", "at91sam9n12"),
- AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9CN11_EXID_MATCH,
- "at91sam9cn11", "at91sam9n12"),
- AT91_SOC(AT91SAM9XE128_CIDR_MATCH, 0, "at91sam9xe128", "at91sam9xe128"),
- AT91_SOC(AT91SAM9XE256_CIDR_MATCH, 0, "at91sam9xe256", "at91sam9xe256"),
- AT91_SOC(AT91SAM9XE512_CIDR_MATCH, 0, "at91sam9xe512", "at91sam9xe512"),
- { /* sentinel */ },
-};
-
-static void __init at91sam9_common_init(void)
+static void __init at91sam9_init(void)
{
- struct soc_device *soc;
- struct device *soc_dev = NULL;
-
- soc = at91_soc_init(at91sam9_socs);
- if (soc != NULL)
- soc_dev = soc_device_to_device(soc);
+ of_platform_default_populate(NULL, NULL, NULL);
- of_platform_default_populate(NULL, NULL, soc_dev);
-}
-
-static void __init at91sam9_dt_device_init(void)
-{
- at91sam9_common_init();
- at91sam9260_pm_init();
+ at91sam9_pm_init();
}
static const char *const at91_dt_board_compat[] __initconst = {
@@ -77,41 +29,6 @@ static const char *const at91_dt_board_compat[] __initconst = {
DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM9")
/* Maintainer: Atmel */
- .init_machine = at91sam9_dt_device_init,
+ .init_machine = at91sam9_init,
.dt_compat = at91_dt_board_compat,
MACHINE_END
-
-static void __init at91sam9g45_dt_device_init(void)
-{
- at91sam9_common_init();
- at91sam9g45_pm_init();
-}
-
-static const char *const at91sam9g45_board_compat[] __initconst = {
- "atmel,at91sam9g45",
- NULL
-};
-
-DT_MACHINE_START(at91sam9g45_dt, "Atmel AT91SAM9G45")
- /* Maintainer: Atmel */
- .init_machine = at91sam9g45_dt_device_init,
- .dt_compat = at91sam9g45_board_compat,
-MACHINE_END
-
-static void __init at91sam9x5_dt_device_init(void)
-{
- at91sam9_common_init();
- at91sam9x5_pm_init();
-}
-
-static const char *const at91sam9x5_board_compat[] __initconst = {
- "atmel,at91sam9x5",
- "atmel,at91sam9n12",
- NULL
-};
-
-DT_MACHINE_START(at91sam9x5_dt, "Atmel AT91SAM9")
- /* Maintainer: Atmel */
- .init_machine = at91sam9x5_dt_device_init,
- .dt_compat = at91sam9x5_board_compat,
-MACHINE_END
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index 28ca57a2060f..f1ead0f13c19 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -13,15 +13,11 @@
#ifdef CONFIG_PM
extern void __init at91rm9200_pm_init(void);
-extern void __init at91sam9260_pm_init(void);
-extern void __init at91sam9g45_pm_init(void);
-extern void __init at91sam9x5_pm_init(void);
+extern void __init at91sam9_pm_init(void);
extern void __init sama5_pm_init(void);
#else
static inline void __init at91rm9200_pm_init(void) { }
-static inline void __init at91sam9260_pm_init(void) { }
-static inline void __init at91sam9g45_pm_init(void) { }
-static inline void __init at91sam9x5_pm_init(void) { }
+static inline void __init at91sam9_pm_init(void) { }
static inline void __init sama5_pm_init(void) { }
#endif
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index a277981f414d..2cd27c830ab6 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -10,35 +10,22 @@
* (at your option) any later version.
*/
-#include <linux/gpio.h>
-#include <linux/suspend.h>
-#include <linux/sched.h>
-#include <linux/proc_fs.h>
#include <linux/genalloc.h>
-#include <linux/interrupt.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
#include <linux/of.h>
#include <linux/of_platform.h>
-#include <linux/of_address.h>
-#include <linux/platform_device.h>
-#include <linux/platform_data/atmel.h>
-#include <linux/io.h>
+#include <linux/suspend.h>
+
#include <linux/clk/at91_pmc.h>
-#include <asm/irq.h>
-#include <linux/atomic.h>
-#include <asm/mach/time.h>
-#include <asm/mach/irq.h>
-#include <asm/fncpy.h>
#include <asm/cacheflush.h>
+#include <asm/fncpy.h>
#include <asm/system_misc.h>
#include "generic.h"
#include "pm.h"
-static void __iomem *pmc;
-
/*
* FIXME: this is needed to communicate between the pinctrl driver and
* the PM implementation in the machine. Possibly part of the PM
@@ -50,12 +37,13 @@ extern void at91_pinctrl_gpio_suspend(void);
extern void at91_pinctrl_gpio_resume(void);
#endif
-static struct {
- unsigned long uhp_udp_mask;
- int memctrl;
-} at91_pm_data;
+static struct at91_pm_data pm_data;
-static void __iomem *at91_ramc_base[2];
+#define at91_ramc_read(id, field) \
+ __raw_readl(pm_data.ramc[id] + field)
+
+#define at91_ramc_write(id, field, value) \
+ __raw_writel(value, pm_data.ramc[id] + field)
static int at91_pm_valid_state(suspend_state_t state)
{
@@ -91,10 +79,10 @@ static int at91_pm_verify_clocks(void)
unsigned long scsr;
int i;
- scsr = readl(pmc + AT91_PMC_SCSR);
+ scsr = readl(pm_data.pmc + AT91_PMC_SCSR);
/* USB must not be using PLLB */
- if ((scsr & at91_pm_data.uhp_udp_mask) != 0) {
+ if ((scsr & pm_data.uhp_udp_mask) != 0) {
pr_err("AT91: PM - Suspend-to-RAM with USB still active\n");
return 0;
}
@@ -105,7 +93,7 @@ static int at91_pm_verify_clocks(void)
if ((scsr & (AT91_PMC_PCK0 << i)) == 0)
continue;
- css = readl(pmc + AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
+ css = readl(pm_data.pmc + AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
if (css != AT91_PMC_CSS_SLOW) {
pr_err("AT91: PM - Suspend-to-RAM with PCK%d src %d\n", i, css);
return 0;
@@ -131,25 +119,18 @@ int at91_suspend_entering_slow_clock(void)
}
EXPORT_SYMBOL(at91_suspend_entering_slow_clock);
-static void (*at91_suspend_sram_fn)(void __iomem *pmc, void __iomem *ramc0,
- void __iomem *ramc1, int memctrl);
-
-extern void at91_pm_suspend_in_sram(void __iomem *pmc, void __iomem *ramc0,
- void __iomem *ramc1, int memctrl);
+static void (*at91_suspend_sram_fn)(struct at91_pm_data *);
+extern void at91_pm_suspend_in_sram(struct at91_pm_data *pm_data);
extern u32 at91_pm_suspend_in_sram_sz;
static void at91_pm_suspend(suspend_state_t state)
{
- unsigned int pm_data = at91_pm_data.memctrl;
-
- pm_data |= (state == PM_SUSPEND_MEM) ?
- AT91_PM_MODE(AT91_PM_SLOW_CLOCK) : 0;
+ pm_data.mode = (state == PM_SUSPEND_MEM) ? AT91_PM_SLOW_CLOCK : 0;
flush_cache_all();
outer_disable();
- at91_suspend_sram_fn(pmc, at91_ramc_base[0],
- at91_ramc_base[1], pm_data);
+ at91_suspend_sram_fn(&pm_data);
outer_resume();
}
@@ -224,12 +205,6 @@ static struct platform_device at91_cpuidle_device = {
.name = "cpuidle-at91",
};
-static void at91_pm_set_standby(void (*at91_standby)(void))
-{
- if (at91_standby)
- at91_cpuidle_device.dev.platform_data = at91_standby;
-}
-
/*
* The AT91RM9200 goes into self-refresh mode with this command, and will
* terminate self-refresh automatically on the next SDRAM access.
@@ -241,20 +216,15 @@ static void at91_pm_set_standby(void (*at91_standby)(void))
*/
static void at91rm9200_standby(void)
{
- u32 lpr = at91_ramc_read(0, AT91_MC_SDRAMC_LPR);
-
asm volatile(
"b 1f\n\t"
".align 5\n\t"
"1: mcr p15, 0, %0, c7, c10, 4\n\t"
- " str %0, [%1, %2]\n\t"
- " str %3, [%1, %4]\n\t"
+ " str %2, [%1, %3]\n\t"
" mcr p15, 0, %0, c7, c0, 4\n\t"
- " str %5, [%1, %2]"
:
- : "r" (0), "r" (at91_ramc_base[0]), "r" (AT91_MC_SDRAMC_LPR),
- "r" (1), "r" (AT91_MC_SDRAMC_SRR),
- "r" (lpr));
+ : "r" (0), "r" (pm_data.ramc[0]),
+ "r" (1), "r" (AT91_MC_SDRAMC_SRR));
}
/* We manage both DDRAM/SDRAM controllers, we need more than one value to
@@ -265,12 +235,27 @@ static void at91_ddr_standby(void)
/* Those two values allow us to delay self-refresh activation
* to the maximum. */
u32 lpr0, lpr1 = 0;
+ u32 mdr, saved_mdr0, saved_mdr1 = 0;
u32 saved_lpr0, saved_lpr1 = 0;
- if (at91_ramc_base[1]) {
+ /* LPDDR1 --> force DDR2 mode during self-refresh */
+ saved_mdr0 = at91_ramc_read(0, AT91_DDRSDRC_MDR);
+ if ((saved_mdr0 & AT91_DDRSDRC_MD) == AT91_DDRSDRC_MD_LOW_POWER_DDR) {
+ mdr = saved_mdr0 & ~AT91_DDRSDRC_MD;
+ mdr |= AT91_DDRSDRC_MD_DDR2;
+ at91_ramc_write(0, AT91_DDRSDRC_MDR, mdr);
+ }
+
+ if (pm_data.ramc[1]) {
saved_lpr1 = at91_ramc_read(1, AT91_DDRSDRC_LPR);
lpr1 = saved_lpr1 & ~AT91_DDRSDRC_LPCB;
lpr1 |= AT91_DDRSDRC_LPCB_SELF_REFRESH;
+ saved_mdr1 = at91_ramc_read(1, AT91_DDRSDRC_MDR);
+ if ((saved_mdr1 & AT91_DDRSDRC_MD) == AT91_DDRSDRC_MD_LOW_POWER_DDR) {
+ mdr = saved_mdr1 & ~AT91_DDRSDRC_MD;
+ mdr |= AT91_DDRSDRC_MD_DDR2;
+ at91_ramc_write(1, AT91_DDRSDRC_MDR, mdr);
+ }
}
saved_lpr0 = at91_ramc_read(0, AT91_DDRSDRC_LPR);
@@ -279,14 +264,17 @@ static void at91_ddr_standby(void)
/* self-refresh mode now */
at91_ramc_write(0, AT91_DDRSDRC_LPR, lpr0);
- if (at91_ramc_base[1])
+ if (pm_data.ramc[1])
at91_ramc_write(1, AT91_DDRSDRC_LPR, lpr1);
cpu_do_idle();
+ at91_ramc_write(0, AT91_DDRSDRC_MDR, saved_mdr0);
at91_ramc_write(0, AT91_DDRSDRC_LPR, saved_lpr0);
- if (at91_ramc_base[1])
+ if (pm_data.ramc[1]) {
+ at91_ramc_write(0, AT91_DDRSDRC_MDR, saved_mdr1);
at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1);
+ }
}
static void sama5d3_ddr_standby(void)
@@ -313,7 +301,7 @@ static void at91sam9_sdram_standby(void)
u32 lpr0, lpr1 = 0;
u32 saved_lpr0, saved_lpr1 = 0;
- if (at91_ramc_base[1]) {
+ if (pm_data.ramc[1]) {
saved_lpr1 = at91_ramc_read(1, AT91_SDRAMC_LPR);
lpr1 = saved_lpr1 & ~AT91_SDRAMC_LPCB;
lpr1 |= AT91_SDRAMC_LPCB_SELF_REFRESH;
@@ -325,21 +313,33 @@ static void at91sam9_sdram_standby(void)
/* self-refresh mode now */
at91_ramc_write(0, AT91_SDRAMC_LPR, lpr0);
- if (at91_ramc_base[1])
+ if (pm_data.ramc[1])
at91_ramc_write(1, AT91_SDRAMC_LPR, lpr1);
cpu_do_idle();
at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr0);
- if (at91_ramc_base[1])
+ if (pm_data.ramc[1])
at91_ramc_write(1, AT91_SDRAMC_LPR, saved_lpr1);
}
+struct ramc_info {
+ void (*idle)(void);
+ unsigned int memctrl;
+};
+
+static const struct ramc_info ramc_infos[] __initconst = {
+ { .idle = at91rm9200_standby, .memctrl = AT91_MEMCTRL_MC},
+ { .idle = at91sam9_sdram_standby, .memctrl = AT91_MEMCTRL_SDRAMC},
+ { .idle = at91_ddr_standby, .memctrl = AT91_MEMCTRL_DDRSDR},
+ { .idle = sama5d3_ddr_standby, .memctrl = AT91_MEMCTRL_DDRSDR},
+};
+
static const struct of_device_id const ramc_ids[] __initconst = {
- { .compatible = "atmel,at91rm9200-sdramc", .data = at91rm9200_standby },
- { .compatible = "atmel,at91sam9260-sdramc", .data = at91sam9_sdram_standby },
- { .compatible = "atmel,at91sam9g45-ddramc", .data = at91_ddr_standby },
- { .compatible = "atmel,sama5d3-ddramc", .data = sama5d3_ddr_standby },
+ { .compatible = "atmel,at91rm9200-sdramc", .data = &ramc_infos[0] },
+ { .compatible = "atmel,at91sam9260-sdramc", .data = &ramc_infos[1] },
+ { .compatible = "atmel,at91sam9g45-ddramc", .data = &ramc_infos[2] },
+ { .compatible = "atmel,sama5d3-ddramc", .data = &ramc_infos[3] },
{ /*sentinel*/ }
};
@@ -348,15 +348,18 @@ static __init void at91_dt_ramc(void)
struct device_node *np;
const struct of_device_id *of_id;
int idx = 0;
- const void *standby = NULL;
+ void *standby = NULL;
+ const struct ramc_info *ramc;
for_each_matching_node_and_match(np, ramc_ids, &of_id) {
- at91_ramc_base[idx] = of_iomap(np, 0);
- if (!at91_ramc_base[idx])
+ pm_data.ramc[idx] = of_iomap(np, 0);
+ if (!pm_data.ramc[idx])
panic(pr_fmt("unable to map ramc[%d] cpu registers\n"), idx);
+ ramc = of_id->data;
if (!standby)
- standby = of_id->data;
+ standby = ramc->idle;
+ pm_data.memctrl = ramc->memctrl;
idx++;
}
@@ -369,7 +372,7 @@ static __init void at91_dt_ramc(void)
return;
}
- at91_pm_set_standby(standby);
+ at91_cpuidle_device.dev.platform_data = standby;
}
static void at91rm9200_idle(void)
@@ -378,12 +381,12 @@ static void at91rm9200_idle(void)
* Disable the processor clock. The processor will be automatically
* re-enabled by an interrupt or by a reset.
*/
- writel(AT91_PMC_PCK, pmc + AT91_PMC_SCDR);
+ writel(AT91_PMC_PCK, pm_data.pmc + AT91_PMC_SCDR);
}
static void at91sam9_idle(void)
{
- writel(AT91_PMC_PCK, pmc + AT91_PMC_SCDR);
+ writel(AT91_PMC_PCK, pm_data.pmc + AT91_PMC_SCDR);
cpu_do_idle();
}
@@ -433,31 +436,46 @@ static void __init at91_pm_sram_init(void)
&at91_pm_suspend_in_sram, at91_pm_suspend_in_sram_sz);
}
+struct pmc_info {
+ unsigned long uhp_udp_mask;
+};
+
+static const struct pmc_info pmc_infos[] __initconst = {
+ { .uhp_udp_mask = AT91RM9200_PMC_UHP | AT91RM9200_PMC_UDP },
+ { .uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP },
+ { .uhp_udp_mask = AT91SAM926x_PMC_UHP },
+};
+
static const struct of_device_id atmel_pmc_ids[] __initconst = {
- { .compatible = "atmel,at91rm9200-pmc" },
- { .compatible = "atmel,at91sam9260-pmc" },
- { .compatible = "atmel,at91sam9g45-pmc" },
- { .compatible = "atmel,at91sam9n12-pmc" },
- { .compatible = "atmel,at91sam9x5-pmc" },
- { .compatible = "atmel,sama5d3-pmc" },
- { .compatible = "atmel,sama5d2-pmc" },
+ { .compatible = "atmel,at91rm9200-pmc", .data = &pmc_infos[0] },
+ { .compatible = "atmel,at91sam9260-pmc", .data = &pmc_infos[1] },
+ { .compatible = "atmel,at91sam9g45-pmc", .data = &pmc_infos[2] },
+ { .compatible = "atmel,at91sam9n12-pmc", .data = &pmc_infos[1] },
+ { .compatible = "atmel,at91sam9x5-pmc", .data = &pmc_infos[1] },
+ { .compatible = "atmel,sama5d3-pmc", .data = &pmc_infos[1] },
+ { .compatible = "atmel,sama5d2-pmc", .data = &pmc_infos[1] },
{ /* sentinel */ },
};
static void __init at91_pm_init(void (*pm_idle)(void))
{
struct device_node *pmc_np;
+ const struct of_device_id *of_id;
+ const struct pmc_info *pmc;
if (at91_cpuidle_device.dev.platform_data)
platform_device_register(&at91_cpuidle_device);
- pmc_np = of_find_matching_node(NULL, atmel_pmc_ids);
- pmc = of_iomap(pmc_np, 0);
- if (!pmc) {
+ pmc_np = of_find_matching_node_and_match(NULL, atmel_pmc_ids, &of_id);
+ pm_data.pmc = of_iomap(pmc_np, 0);
+ if (!pm_data.pmc) {
pr_err("AT91: PM not supported, PMC not found\n");
return;
}
+ pmc = of_id->data;
+ pm_data.uhp_udp_mask = pmc->uhp_udp_mask;
+
if (pm_idle)
arm_pm_idle = pm_idle;
@@ -478,40 +496,17 @@ void __init at91rm9200_pm_init(void)
*/
at91_ramc_write(0, AT91_MC_SDRAMC_LPR, 0);
- at91_pm_data.uhp_udp_mask = AT91RM9200_PMC_UHP | AT91RM9200_PMC_UDP;
- at91_pm_data.memctrl = AT91_MEMCTRL_MC;
-
at91_pm_init(at91rm9200_idle);
}
-void __init at91sam9260_pm_init(void)
-{
- at91_dt_ramc();
- at91_pm_data.memctrl = AT91_MEMCTRL_SDRAMC;
- at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
- at91_pm_init(at91sam9_idle);
-}
-
-void __init at91sam9g45_pm_init(void)
-{
- at91_dt_ramc();
- at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP;
- at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
- at91_pm_init(at91sam9_idle);
-}
-
-void __init at91sam9x5_pm_init(void)
+void __init at91sam9_pm_init(void)
{
at91_dt_ramc();
- at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
- at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
at91_pm_init(at91sam9_idle);
}
void __init sama5_pm_init(void)
{
at91_dt_ramc();
- at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
- at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
at91_pm_init(NULL);
}
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h
index bf980c6ef294..fc0f7d048187 100644
--- a/arch/arm/mach-at91/pm.h
+++ b/arch/arm/mach-at91/pm.h
@@ -17,24 +17,20 @@
#include <soc/at91/at91sam9_ddrsdr.h>
#include <soc/at91/at91sam9_sdramc.h>
-#ifndef __ASSEMBLY__
-#define at91_ramc_read(id, field) \
- __raw_readl(at91_ramc_base[id] + field)
-
-#define at91_ramc_write(id, field, value) \
- __raw_writel(value, at91_ramc_base[id] + field)
-#endif
-
#define AT91_MEMCTRL_MC 0
#define AT91_MEMCTRL_SDRAMC 1
#define AT91_MEMCTRL_DDRSDR 2
-#define AT91_PM_MEMTYPE_MASK 0x0f
-
-#define AT91_PM_MODE_OFFSET 4
-#define AT91_PM_MODE_MASK 0x01
-#define AT91_PM_MODE(x) (((x) & AT91_PM_MODE_MASK) << AT91_PM_MODE_OFFSET)
-
#define AT91_PM_SLOW_CLOCK 0x01
+#ifndef __ASSEMBLY__
+struct at91_pm_data {
+ void __iomem *pmc;
+ void __iomem *ramc[2];
+ unsigned long uhp_udp_mask;
+ unsigned int memctrl;
+ unsigned int mode;
+};
+#endif
+
#endif
diff --git a/arch/arm/mach-at91/pm_data-offsets.c b/arch/arm/mach-at91/pm_data-offsets.c
new file mode 100644
index 000000000000..30302cb16df0
--- /dev/null
+++ b/arch/arm/mach-at91/pm_data-offsets.c
@@ -0,0 +1,13 @@
+#include <linux/stddef.h>
+#include <linux/kbuild.h>
+#include "pm.h"
+
+int main(void)
+{
+ DEFINE(PM_DATA_PMC, offsetof(struct at91_pm_data, pmc));
+ DEFINE(PM_DATA_RAMC0, offsetof(struct at91_pm_data, ramc[0]));
+ DEFINE(PM_DATA_RAMC1, offsetof(struct at91_pm_data, ramc[1]));
+ DEFINE(PM_DATA_MEMCTRL, offsetof(struct at91_pm_data, memctrl));
+ DEFINE(PM_DATA_MODE, offsetof(struct at91_pm_data, mode));
+ return 0;
+}
diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
index a25defda3d22..96781daa671a 100644
--- a/arch/arm/mach-at91/pm_suspend.S
+++ b/arch/arm/mach-at91/pm_suspend.S
@@ -4,7 +4,7 @@
* Copyright (C) 2006 Savin Zlobec
*
* AT91SAM9 support:
- * Copyright (C) 2007 Anti Sullin <anti.sullin@artecdesign.ee
+ * Copyright (C) 2007 Anti Sullin <anti.sullin@artecdesign.ee>
*
* 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
@@ -14,6 +14,7 @@
#include <linux/linkage.h>
#include <linux/clk/at91_pmc.h>
#include "pm.h"
+#include "generated/at91_pm_data-offsets.h"
#define SRAMC_SELF_FRESH_ACTIVE 0x01
#define SRAMC_SELF_FRESH_EXIT 0x00
@@ -72,13 +73,9 @@ tmp2 .req r5
.arm
/*
- * void at91_pm_suspend_in_sram(void __iomem *pmc, void __iomem *sdramc,
- * void __iomem *ramc1, int memctrl)
+ * void at91_suspend_sram_fn(struct at91_pm_data*)
* @input param:
- * @r0: base address of AT91_PMC
- * @r1: base address of SDRAM Controller (SDRAM, DDRSDR, or AT91_SYS)
- * @r2: base address of second SDRAM Controller or 0 if not present
- * @r3: pm information
+ * @r0: base address of struct at91_pm_data
*/
/* at91_pm_suspend_in_sram must be 8-byte aligned per the requirements of fncpy() */
.align 3
@@ -90,16 +87,16 @@ ENTRY(at91_pm_suspend_in_sram)
mov tmp1, #0
mcr p15, 0, tmp1, c7, c10, 4
- str r0, .pmc_base
- str r1, .sramc_base
- str r2, .sramc1_base
-
- and r0, r3, #AT91_PM_MEMTYPE_MASK
- str r0, .memtype
-
- lsr r0, r3, #AT91_PM_MODE_OFFSET
- and r0, r0, #AT91_PM_MODE_MASK
- str r0, .pm_mode
+ ldr tmp1, [r0, #PM_DATA_PMC]
+ str tmp1, .pmc_base
+ ldr tmp1, [r0, #PM_DATA_RAMC0]
+ str tmp1, .sramc_base
+ ldr tmp1, [r0, #PM_DATA_RAMC1]
+ str tmp1, .sramc1_base
+ ldr tmp1, [r0, #PM_DATA_MEMCTRL]
+ str tmp1, .memtype
+ ldr tmp1, [r0, #PM_DATA_MODE]
+ str tmp1, .pm_mode
/* Active the self-refresh mode */
mov r0, #SRAMC_SELF_FRESH_ACTIVE
diff --git a/arch/arm/mach-at91/sama5.c b/arch/arm/mach-at91/sama5.c
index b272c45b400f..6d157d0ead8e 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -15,60 +15,10 @@
#include <asm/system_misc.h>
#include "generic.h"
-#include "soc.h"
-
-static const struct at91_soc sama5_socs[] = {
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D21CU_EXID_MATCH,
- "sama5d21", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D22CU_EXID_MATCH,
- "sama5d22", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D23CU_EXID_MATCH,
- "sama5d23", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D24CX_EXID_MATCH,
- "sama5d24", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D24CU_EXID_MATCH,
- "sama5d24", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D26CU_EXID_MATCH,
- "sama5d26", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27CU_EXID_MATCH,
- "sama5d27", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27CN_EXID_MATCH,
- "sama5d27", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CU_EXID_MATCH,
- "sama5d28", "sama5d2"),
- AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CN_EXID_MATCH,
- "sama5d28", "sama5d2"),
- AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D31_EXID_MATCH,
- "sama5d31", "sama5d3"),
- AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D33_EXID_MATCH,
- "sama5d33", "sama5d3"),
- AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D34_EXID_MATCH,
- "sama5d34", "sama5d3"),
- AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D35_EXID_MATCH,
- "sama5d35", "sama5d3"),
- AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D36_EXID_MATCH,
- "sama5d36", "sama5d3"),
- AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D41_EXID_MATCH,
- "sama5d41", "sama5d4"),
- AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D42_EXID_MATCH,
- "sama5d42", "sama5d4"),
- AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D43_EXID_MATCH,
- "sama5d43", "sama5d4"),
- AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D44_EXID_MATCH,
- "sama5d44", "sama5d4"),
- { /* sentinel */ },
-};
static void __init sama5_dt_device_init(void)
{
- struct soc_device *soc;
- struct device *soc_dev = NULL;
-
- soc = at91_soc_init(sama5_socs);
- if (soc != NULL)
- soc_dev = soc_device_to_device(soc);
-
- of_platform_default_populate(NULL, NULL, soc_dev);
+ of_platform_default_populate(NULL, NULL, NULL);
sama5_pm_init();
}
diff --git a/arch/arm/mach-at91/soc.c b/arch/arm/mach-at91/soc.c
deleted file mode 100644
index c6fda75ddb89..000000000000
--- a/arch/arm/mach-at91/soc.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * Copyright (C) 2015 Atmel
- *
- * Alexandre Belloni <alexandre.belloni@free-electrons.com
- * Boris Brezillon <boris.brezillon@free-electrons.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.
- *
- */
-
-#define pr_fmt(fmt) "AT91: " fmt
-
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-#include <linux/slab.h>
-#include <linux/sys_soc.h>
-
-#include "soc.h"
-
-#define AT91_DBGU_CIDR 0x40
-#define AT91_DBGU_EXID 0x44
-#define AT91_CHIPID_CIDR 0x00
-#define AT91_CHIPID_EXID 0x04
-#define AT91_CIDR_VERSION(x) ((x) & 0x1f)
-#define AT91_CIDR_EXT BIT(31)
-#define AT91_CIDR_MATCH_MASK 0x7fffffe0
-
-static int __init at91_get_cidr_exid_from_dbgu(u32 *cidr, u32 *exid)
-{
- struct device_node *np;
- void __iomem *regs;
-
- np = of_find_compatible_node(NULL, NULL, "atmel,at91rm9200-dbgu");
- if (!np)
- np = of_find_compatible_node(NULL, NULL,
- "atmel,at91sam9260-dbgu");
- if (!np)
- return -ENODEV;
-
- regs = of_iomap(np, 0);
- of_node_put(np);
-
- if (!regs) {
- pr_warn("Could not map DBGU iomem range");
- return -ENXIO;
- }
-
- *cidr = readl(regs + AT91_DBGU_CIDR);
- *exid = readl(regs + AT91_DBGU_EXID);
-
- iounmap(regs);
-
- return 0;
-}
-
-static int __init at91_get_cidr_exid_from_chipid(u32 *cidr, u32 *exid)
-{
- struct device_node *np;
- void __iomem *regs;
-
- np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-chipid");
- if (!np)
- return -ENODEV;
-
- regs = of_iomap(np, 0);
- of_node_put(np);
-
- if (!regs) {
- pr_warn("Could not map DBGU iomem range");
- return -ENXIO;
- }
-
- *cidr = readl(regs + AT91_CHIPID_CIDR);
- *exid = readl(regs + AT91_CHIPID_EXID);
-
- iounmap(regs);
-
- return 0;
-}
-
-struct soc_device * __init at91_soc_init(const struct at91_soc *socs)
-{
- struct soc_device_attribute *soc_dev_attr;
- const struct at91_soc *soc;
- struct soc_device *soc_dev;
- u32 cidr, exid;
- int ret;
-
- /*
- * With SAMA5D2 and later SoCs, CIDR and EXID registers are no more
- * in the dbgu device but in the chipid device whose purpose is only
- * to expose these two registers.
- */
- ret = at91_get_cidr_exid_from_dbgu(&cidr, &exid);
- if (ret)
- ret = at91_get_cidr_exid_from_chipid(&cidr, &exid);
- if (ret) {
- if (ret == -ENODEV)
- pr_warn("Could not find identification node");
- return NULL;
- }
-
- for (soc = socs; soc->name; soc++) {
- if (soc->cidr_match != (cidr & AT91_CIDR_MATCH_MASK))
- continue;
-
- if (!(cidr & AT91_CIDR_EXT) || soc->exid_match == exid)
- break;
- }
-
- if (!soc->name) {
- pr_warn("Could not find matching SoC description\n");
- return NULL;
- }
-
- soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
- if (!soc_dev_attr)
- return NULL;
-
- soc_dev_attr->family = soc->family;
- soc_dev_attr->soc_id = soc->name;
- soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%X",
- AT91_CIDR_VERSION(cidr));
- soc_dev = soc_device_register(soc_dev_attr);
- if (IS_ERR(soc_dev)) {
- kfree(soc_dev_attr->revision);
- kfree(soc_dev_attr);
- pr_warn("Could not register SoC device\n");
- return NULL;
- }
-
- if (soc->family)
- pr_info("Detected SoC family: %s\n", soc->family);
- pr_info("Detected SoC: %s, revision %X\n", soc->name,
- AT91_CIDR_VERSION(cidr));
-
- return soc_dev;
-}
diff --git a/arch/arm/mach-at91/soc.h b/arch/arm/mach-at91/soc.h
deleted file mode 100644
index 228efded5085..000000000000
--- a/arch/arm/mach-at91/soc.h
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2015 Atmel
- *
- * Boris Brezillon <boris.brezillon@free-electrons.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.
- *
- */
-
-#ifndef __AT91_SOC_H
-#define __AT91_SOC_H
-
-#include <linux/sys_soc.h>
-
-struct at91_soc {
- u32 cidr_match;
- u32 exid_match;
- const char *name;
- const char *family;
-};
-
-#define AT91_SOC(__cidr, __exid, __name, __family) \
- { \
- .cidr_match = (__cidr), \
- .exid_match = (__exid), \
- .name = (__name), \
- .family = (__family), \
- }
-
-struct soc_device * __init
-at91_soc_init(const struct at91_soc *socs);
-
-#define AT91RM9200_CIDR_MATCH 0x09290780
-
-#define AT91SAM9260_CIDR_MATCH 0x019803a0
-#define AT91SAM9261_CIDR_MATCH 0x019703a0
-#define AT91SAM9263_CIDR_MATCH 0x019607a0
-#define AT91SAM9G20_CIDR_MATCH 0x019905a0
-#define AT91SAM9RL64_CIDR_MATCH 0x019b03a0
-#define AT91SAM9G45_CIDR_MATCH 0x019b05a0
-#define AT91SAM9X5_CIDR_MATCH 0x019a05a0
-#define AT91SAM9N12_CIDR_MATCH 0x019a07a0
-
-#define AT91SAM9M11_EXID_MATCH 0x00000001
-#define AT91SAM9M10_EXID_MATCH 0x00000002
-#define AT91SAM9G46_EXID_MATCH 0x00000003
-#define AT91SAM9G45_EXID_MATCH 0x00000004
-
-#define AT91SAM9G15_EXID_MATCH 0x00000000
-#define AT91SAM9G35_EXID_MATCH 0x00000001
-#define AT91SAM9X35_EXID_MATCH 0x00000002
-#define AT91SAM9G25_EXID_MATCH 0x00000003
-#define AT91SAM9X25_EXID_MATCH 0x00000004
-
-#define AT91SAM9CN12_EXID_MATCH 0x00000005
-#define AT91SAM9N12_EXID_MATCH 0x00000006
-#define AT91SAM9CN11_EXID_MATCH 0x00000009
-
-#define AT91SAM9XE128_CIDR_MATCH 0x329973a0
-#define AT91SAM9XE256_CIDR_MATCH 0x329a93a0
-#define AT91SAM9XE512_CIDR_MATCH 0x329aa3a0
-
-#define SAMA5D2_CIDR_MATCH 0x0a5c08c0
-#define SAMA5D21CU_EXID_MATCH 0x0000005a
-#define SAMA5D22CU_EXID_MATCH 0x00000059
-#define SAMA5D22CN_EXID_MATCH 0x00000069
-#define SAMA5D23CU_EXID_MATCH 0x00000058
-#define SAMA5D24CX_EXID_MATCH 0x00000004
-#define SAMA5D24CU_EXID_MATCH 0x00000014
-#define SAMA5D26CU_EXID_MATCH 0x00000012
-#define SAMA5D27CU_EXID_MATCH 0x00000011
-#define SAMA5D27CN_EXID_MATCH 0x00000021
-#define SAMA5D28CU_EXID_MATCH 0x00000010
-#define SAMA5D28CN_EXID_MATCH 0x00000020
-
-#define SAMA5D3_CIDR_MATCH 0x0a5c07c0
-#define SAMA5D31_EXID_MATCH 0x00444300
-#define SAMA5D33_EXID_MATCH 0x00414300
-#define SAMA5D34_EXID_MATCH 0x00414301
-#define SAMA5D35_EXID_MATCH 0x00584300
-#define SAMA5D36_EXID_MATCH 0x00004301
-
-#define SAMA5D4_CIDR_MATCH 0x0a5c07c0
-#define SAMA5D41_EXID_MATCH 0x00000001
-#define SAMA5D42_EXID_MATCH 0x00000002
-#define SAMA5D43_EXID_MATCH 0x00000003
-#define SAMA5D44_EXID_MATCH 0x00000004
-
-#endif /* __AT91_SOC_H */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.