diff options
Diffstat (limited to 'arch/arm/mach-exynos/suspend.c')
| -rw-r--r-- | arch/arm/mach-exynos/suspend.c | 90 |
1 files changed, 82 insertions, 8 deletions
diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c index f8e7dcd17055..52e2b1a2fddb 100644 --- a/arch/arm/mach-exynos/suspend.c +++ b/arch/arm/mach-exynos/suspend.c @@ -34,7 +34,6 @@ #include "common.h" #include "regs-pmu.h" -#include "regs-sys.h" #include "exynos-pmu.h" #define S5P_CHECK_SLEEP 0x00000BAD @@ -53,10 +52,6 @@ struct exynos_wkup_irq { u32 mask; }; -static struct sleep_save exynos5_sys_save[] = { - SAVE_ITEM(EXYNOS5_SYS_I2C_CFG), -}; - static struct sleep_save exynos_core_save[] = { /* SROM side */ SAVE_ITEM(S5P_SROM_BW), @@ -91,6 +86,12 @@ static unsigned int exynos_pmu_spare3; static u32 exynos_irqwake_intmask = 0xffffffff; +static const struct exynos_wkup_irq exynos3250_wkup_irq[] = { + { 73, BIT(1) }, /* RTC alarm */ + { 74, BIT(2) }, /* RTC tick */ + { /* sentinel */ }, +}; + static const struct exynos_wkup_irq exynos4_wkup_irq[] = { { 76, BIT(1) }, /* RTC alarm */ { 77, BIT(2) }, /* RTC tick */ @@ -114,6 +115,19 @@ unsigned int exynos_release_ret_regs[] = { REG_TABLE_END, }; +unsigned int exynos3250_release_ret_regs[] = { + S5P_PAD_RET_MAUDIO_OPTION, + S5P_PAD_RET_GPIO_OPTION, + S5P_PAD_RET_UART_OPTION, + S5P_PAD_RET_MMCA_OPTION, + S5P_PAD_RET_MMCB_OPTION, + S5P_PAD_RET_EBIA_OPTION, + S5P_PAD_RET_EBIB_OPTION, + S5P_PAD_RET_MMC2_OPTION, + S5P_PAD_RET_SPI_OPTION, + REG_TABLE_END, +}; + unsigned int exynos5420_release_ret_regs[] = { EXYNOS_PAD_RET_DRAM_OPTION, EXYNOS_PAD_RET_MAUDIO_OPTION, @@ -173,6 +187,12 @@ static int exynos_cpu_suspend(unsigned long arg) return exynos_cpu_do_idle(); } +static int exynos3250_cpu_suspend(unsigned long arg) +{ + flush_cache_all(); + return exynos_cpu_do_idle(); +} + static int exynos5420_cpu_suspend(unsigned long arg) { /* MCPM works with HW CPU identifiers */ @@ -230,6 +250,23 @@ static void exynos_pm_prepare(void) pmu_raw_writel(virt_to_phys(exynos_cpu_resume), S5P_INFORM0); } +static void exynos3250_pm_prepare(void) +{ + unsigned int tmp; + + /* Set wake-up mask registers */ + exynos_pm_set_wakeup_mask(); + + tmp = pmu_raw_readl(EXYNOS3_ARM_L2_OPTION); + tmp &= ~EXYNOS5_OPTION_USE_RETENTION; + pmu_raw_writel(tmp, EXYNOS3_ARM_L2_OPTION); + + exynos_pm_enter_sleep_mode(); + + /* ensure at least INFORM0 has the resume address */ + pmu_raw_writel(virt_to_phys(exynos_cpu_resume), S5P_INFORM0); +} + static void exynos5420_pm_prepare(void) { unsigned int tmp; @@ -282,6 +319,10 @@ static int exynos_pm_suspend(void) { exynos_pm_central_suspend(); + /* Setting SEQ_OPTION register */ + pmu_raw_writel(S5P_USE_STANDBY_WFI0 | S5P_USE_STANDBY_WFE0, + S5P_CENTRAL_SEQ_OPTION); + if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9) exynos_cpu_save_register(); @@ -344,6 +385,28 @@ early_wakeup: pmu_raw_writel(0x0, S5P_INFORM1); } +static void exynos3250_pm_resume(void) +{ + u32 cpuid = read_cpuid_part(); + + if (exynos_pm_central_resume()) + goto early_wakeup; + + /* For release retention */ + exynos_pm_release_retention(); + + pmu_raw_writel(S5P_USE_STANDBY_WFI_ALL, S5P_CENTRAL_SEQ_OPTION); + + if (call_firmware_op(resume) == -ENOSYS + && cpuid == ARM_CPU_PART_CORTEX_A9) + exynos_cpu_restore_register(); + +early_wakeup: + + /* Clear SLEEP mode set in INFORM1 */ + pmu_raw_writel(0x0, S5P_INFORM1); +} + static void exynos5420_prepare_pm_resume(void) { if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM)) @@ -483,6 +546,16 @@ static const struct platform_suspend_ops exynos_suspend_ops = { .valid = suspend_valid_only_mem, }; +static const struct exynos_pm_data exynos3250_pm_data = { + .wkup_irq = exynos3250_wkup_irq, + .wake_disable_mask = ((0xFF << 8) | (0x1F << 1)), + .release_ret_regs = exynos3250_release_ret_regs, + .pm_suspend = exynos_pm_suspend, + .pm_resume = exynos3250_pm_resume, + .pm_prepare = exynos3250_pm_prepare, + .cpu_suspend = exynos3250_cpu_suspend, +}; + static const struct exynos_pm_data exynos4_pm_data = { .wkup_irq = exynos4_wkup_irq, .wake_disable_mask = ((0xFF << 8) | (0x1F << 1)), @@ -497,8 +570,6 @@ static const struct exynos_pm_data exynos5250_pm_data = { .wkup_irq = exynos5250_wkup_irq, .wake_disable_mask = ((0xFF << 8) | (0x1F << 1)), .release_ret_regs = exynos_release_ret_regs, - .extra_save = exynos5_sys_save, - .num_extra_save = ARRAY_SIZE(exynos5_sys_save), .pm_suspend = exynos_pm_suspend, .pm_resume = exynos_pm_resume, .pm_prepare = exynos_pm_prepare, @@ -516,8 +587,11 @@ static struct exynos_pm_data exynos5420_pm_data = { .cpu_suspend = exynos5420_cpu_suspend, }; -static struct of_device_id exynos_pmu_of_device_ids[] = { +static const struct of_device_id exynos_pmu_of_device_ids[] __initconst = { { + .compatible = "samsung,exynos3250-pmu", + .data = &exynos3250_pm_data, + }, { .compatible = "samsung,exynos4210-pmu", .data = &exynos4_pm_data, }, { |