diff options
Diffstat (limited to 'arch/arm/mach-exynos/pm.c')
| -rw-r--r-- | arch/arm/mach-exynos/pm.c | 79 |
1 files changed, 71 insertions, 8 deletions
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c index 596ed13c4166..ada1c8374b77 100644 --- a/arch/arm/mach-exynos/pm.c +++ b/arch/arm/mach-exynos/pm.c @@ -23,14 +23,14 @@ #include <asm/cacheflush.h> #include <asm/hardware/cache-l2x0.h> #include <asm/smp_scu.h> +#include <asm/suspend.h> #include <plat/cpu.h> -#include <plat/pm.h> +#include <plat/pm-common.h> #include <plat/pll.h> #include <plat/regs-srom.h> #include <mach/map.h> -#include <mach/pm-core.h> #include "common.h" #include "regs-pmu.h" @@ -48,6 +48,7 @@ static struct sleep_save exynos_core_save[] = { SAVE_ITEM(S5P_SROM_BC3), }; +static u32 exynos_irqwake_intmask = 0xffffffff; /* For Cortex-A9 Diagnostic and Power control register */ static unsigned int save_arm_register[2]; @@ -72,6 +73,10 @@ static void exynos_pm_prepare(void) { unsigned int tmp; + /* Set wake-up mask registers */ + __raw_writel(exynos_get_eint_wake_mask(), S5P_EINT_WAKEUP_MASK); + __raw_writel(exynos_irqwake_intmask & ~(1 << 31), S5P_WAKEUP_MASK); + s3c_pm_do_save(exynos_core_save, ARRAY_SIZE(exynos_core_save)); if (soc_is_exynos5250()) { @@ -89,7 +94,7 @@ static void exynos_pm_prepare(void) /* ensure at least INFORM0 has the resume address */ - __raw_writel(virt_to_phys(s3c_cpu_resume), S5P_INFORM0); + __raw_writel(virt_to_phys(exynos_cpu_resume), S5P_INFORM0); } static int exynos_pm_suspend(void) @@ -187,14 +192,71 @@ static struct syscore_ops exynos_pm_syscore_ops = { .resume = exynos_pm_resume, }; -void __init exynos_pm_init(void) +/* + * Suspend Ops + */ + +static int exynos_suspend_enter(suspend_state_t state) { - u32 tmp; + int ret; + + s3c_pm_debug_init(); + + S3C_PMDBG("%s: suspending the system...\n", __func__); + + S3C_PMDBG("%s: wakeup masks: %08x,%08x\n", __func__, + exynos_irqwake_intmask, exynos_get_eint_wake_mask()); - pm_cpu_prep = exynos_pm_prepare; - pm_cpu_sleep = exynos_cpu_suspend; + if (exynos_irqwake_intmask == -1U + && exynos_get_eint_wake_mask() == -1U) { + pr_err("%s: No wake-up sources!\n", __func__); + pr_err("%s: Aborting sleep\n", __func__); + return -EINVAL; + } + + s3c_pm_save_uarts(); + exynos_pm_prepare(); + flush_cache_all(); + s3c_pm_check_store(); + + ret = cpu_suspend(0, exynos_cpu_suspend); + if (ret) + return ret; + + s3c_pm_restore_uarts(); - s3c_pm_init(); + S3C_PMDBG("%s: wakeup stat: %08x\n", __func__, + __raw_readl(S5P_WAKEUP_STAT)); + + s3c_pm_check_restore(); + + S3C_PMDBG("%s: resuming the system...\n", __func__); + + return 0; +} + +static int exynos_suspend_prepare(void) +{ + s3c_pm_check_prepare(); + + return 0; +} + +static void exynos_suspend_finish(void) +{ + s3c_pm_check_cleanup(); +} + +static const struct platform_suspend_ops exynos_suspend_ops = { + .enter = exynos_suspend_enter, + .prepare = exynos_suspend_prepare, + .finish = exynos_suspend_finish, + .valid = suspend_valid_only_mem, +}; + +void __init exynos_pm_init(void) +{ + u32 tmp; /* All wakeup disable */ tmp = __raw_readl(S5P_WAKEUP_MASK); @@ -202,4 +264,5 @@ void __init exynos_pm_init(void) __raw_writel(tmp, S5P_WAKEUP_MASK); register_syscore_ops(&exynos_pm_syscore_ops); + suspend_set_ops(&exynos_suspend_ops); } |