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-rw-r--r--arch/arm/mach-exynos/pm.c163
-rw-r--r--drivers/cpuidle/cpuidle-exynos.c25
2 files changed, 80 insertions, 108 deletions
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 18646b7..abefacb 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -114,26 +114,6 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)
#define S5P_CHECK_AFTR 0xFCBA0D10
#define S5P_CHECK_SLEEP 0x00000BAD
-/* Ext-GIC nIRQ/nFIQ is the only wakeup source in AFTR */
-static void exynos_set_wakeupmask(long mask)
-{
- pmu_raw_writel(mask, S5P_WAKEUP_MASK);
-}
-
-static void exynos_cpu_set_boot_vector(long flags)
-{
- __raw_writel(virt_to_phys(exynos_cpu_resume), EXYNOS_BOOT_VECTOR_ADDR);
- __raw_writel(flags, EXYNOS_BOOT_VECTOR_FLAG);
-}
-
-void exynos_enter_aftr(void)
-{
- exynos_set_wakeupmask(0x0000ff3e);
- exynos_cpu_set_boot_vector(S5P_CHECK_AFTR);
- /* Set value of power down register for aftr mode */
- exynos_sys_powerdown_conf(SYS_AFTR);
-}
-
/* For Cortex-A9 Diagnostic and Power control register */
static unsigned int save_arm_register[2];
@@ -173,6 +153,82 @@ static void exynos_cpu_restore_register(void)
: "cc");
}
+static void exynos_pm_central_suspend(void)
+{
+ unsigned long tmp;
+
+ /* Setting Central Sequence Register for power down mode */
+ tmp = pmu_raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
+ tmp &= ~S5P_CENTRAL_LOWPWR_CFG;
+ pmu_raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
+}
+
+static int exynos_pm_central_resume(void)
+{
+ unsigned long tmp;
+
+ /*
+ * If PMU failed while entering sleep mode, WFI will be
+ * ignored by PMU and then exiting cpu_do_idle().
+ * S5P_CENTRAL_LOWPWR_CFG bit will not be set automatically
+ * in this situation.
+ */
+ tmp = pmu_raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
+ if (!(tmp & S5P_CENTRAL_LOWPWR_CFG)) {
+ tmp |= S5P_CENTRAL_LOWPWR_CFG;
+ pmu_raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
+ /* clear the wakeup state register */
+ pmu_raw_writel(0x0, S5P_WAKEUP_STAT);
+ /* No need to perform below restore code */
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Ext-GIC nIRQ/nFIQ is the only wakeup source in AFTR */
+static void exynos_set_wakeupmask(long mask)
+{
+ pmu_raw_writel(mask, S5P_WAKEUP_MASK);
+}
+
+static void exynos_cpu_set_boot_vector(long flags)
+{
+ __raw_writel(virt_to_phys(exynos_cpu_resume), EXYNOS_BOOT_VECTOR_ADDR);
+ __raw_writel(flags, EXYNOS_BOOT_VECTOR_FLAG);
+}
+
+static int exynos_aftr_finisher(unsigned long flags)
+{
+ exynos_set_wakeupmask(0x0000ff3e);
+ exynos_cpu_set_boot_vector(S5P_CHECK_AFTR);
+ /* Set value of power down register for aftr mode */
+ exynos_sys_powerdown_conf(SYS_AFTR);
+ cpu_do_idle();
+
+ return 1;
+}
+
+void exynos_enter_aftr(void)
+{
+ cpu_pm_enter();
+
+ exynos_pm_central_suspend();
+ if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)
+ exynos_cpu_save_register();
+
+ cpu_suspend(0, exynos_aftr_finisher);
+
+ if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9) {
+ scu_enable(S5P_VA_SCU);
+ exynos_cpu_restore_register();
+ }
+
+ exynos_pm_central_resume();
+
+ cpu_pm_exit();
+}
+
static int exynos_cpu_suspend(unsigned long arg)
{
#ifdef CONFIG_CACHE_L2X0
@@ -217,16 +273,6 @@ static void exynos_pm_prepare(void)
pmu_raw_writel(virt_to_phys(exynos_cpu_resume), S5P_INFORM0);
}
-static void exynos_pm_central_suspend(void)
-{
- unsigned long tmp;
-
- /* Setting Central Sequence Register for power down mode */
- tmp = pmu_raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
- tmp &= ~S5P_CENTRAL_LOWPWR_CFG;
- pmu_raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
-}
-
static int exynos_pm_suspend(void)
{
unsigned long tmp;
@@ -244,29 +290,6 @@ static int exynos_pm_suspend(void)
return 0;
}
-static int exynos_pm_central_resume(void)
-{
- unsigned long tmp;
-
- /*
- * If PMU failed while entering sleep mode, WFI will be
- * ignored by PMU and then exiting cpu_do_idle().
- * S5P_CENTRAL_LOWPWR_CFG bit will not be set automatically
- * in this situation.
- */
- tmp = pmu_raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
- if (!(tmp & S5P_CENTRAL_LOWPWR_CFG)) {
- tmp |= S5P_CENTRAL_LOWPWR_CFG;
- pmu_raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
- /* clear the wakeup state register */
- pmu_raw_writel(0x0, S5P_WAKEUP_STAT);
- /* No need to perform below restore code */
- return -1;
- }
-
- return 0;
-}
-
static void exynos_pm_resume(void)
{
if (exynos_pm_central_resume())
@@ -369,44 +392,10 @@ static const struct platform_suspend_ops exynos_suspend_ops = {
.valid = suspend_valid_only_mem,
};
-static int exynos_cpu_pm_notifier(struct notifier_block *self,
- unsigned long cmd, void *v)
-{
- int cpu = smp_processor_id();
-
- switch (cmd) {
- case CPU_PM_ENTER:
- if (cpu == 0) {
- exynos_pm_central_suspend();
- if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)
- exynos_cpu_save_register();
- }
- break;
-
- case CPU_PM_EXIT:
- if (cpu == 0) {
- if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9) {
- scu_enable(S5P_VA_SCU);
- exynos_cpu_restore_register();
- }
- exynos_pm_central_resume();
- }
- break;
- }
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block exynos_cpu_pm_notifier_block = {
- .notifier_call = exynos_cpu_pm_notifier,
-};
-
void __init exynos_pm_init(void)
{
u32 tmp;
- cpu_pm_register_notifier(&exynos_cpu_pm_notifier_block);
-
/* Platform-specific GIC callback */
gic_arch_extn.irq_set_wake = exynos_irq_set_wake;
diff --git a/drivers/cpuidle/cpuidle-exynos.c b/drivers/cpuidle/cpuidle-exynos.c
index 7c01512..ba9b34b 100644
--- a/drivers/cpuidle/cpuidle-exynos.c
+++ b/drivers/cpuidle/cpuidle-exynos.c
@@ -20,25 +20,6 @@
static void (*exynos_enter_aftr)(void);
-static int idle_finisher(unsigned long flags)
-{
- exynos_enter_aftr();
- cpu_do_idle();
-
- return 1;
-}
-
-static int exynos_enter_core0_aftr(struct cpuidle_device *dev,
- struct cpuidle_driver *drv,
- int index)
-{
- cpu_pm_enter();
- cpu_suspend(0, idle_finisher);
- cpu_pm_exit();
-
- return index;
-}
-
static int exynos_enter_lowpower(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
@@ -51,8 +32,10 @@ static int exynos_enter_lowpower(struct cpuidle_device *dev,
if (new_index == 0)
return arm_cpuidle_simple_enter(dev, drv, new_index);
- else
- return exynos_enter_core0_aftr(dev, drv, new_index);
+
+ exynos_enter_aftr();
+
+ return new_index;
}
static struct cpuidle_driver exynos_idle_driver = {
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