ARM: EXYNOS: Adapt to cpuidle core time keeping and irq enable

This patch enables core cpuidle timekeeping and irq enabling and
remove those redundant parts from the exynos cpuidle drivers

Signed-off-by: Amit Daniel <amit.kachhap@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Robert Lee <rob.lee@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/arch/arm/mach-exynos/cpuidle.c b/arch/arm/mach-exynos/cpuidle.c
index 33ab4e7558af2e6bceb23eadbf2c3fd6f4c9538d..26dac2893b8e4f2a97bdaa0be50506b893083a50 100644 (file)
--- a/arch/arm/mach-exynos/cpuidle.c
+++ b/arch/arm/mach-exynos/cpuidle.c
@@ -20,6 +20,7 @@
 #include <asm/smp_scu.h>
 #include <asm/suspend.h>
 #include <asm/unified.h>
+#include <asm/cpuidle.h>
 #include <mach/regs-pmu.h>
 #include <mach/pmu.h>
 
@@ -34,22 +35,12 @@
 
 #define S5P_CHECK_AFTR         0xFCBA0D10
 
-static int exynos4_enter_idle(struct cpuidle_device *dev,
-                       struct cpuidle_driver *drv,
-                             int index);
 static int exynos4_enter_lowpower(struct cpuidle_device *dev,
                                struct cpuidle_driver *drv,
                                int index);
 
 static struct cpuidle_state exynos4_cpuidle_set[] __initdata = {
-       [0] = {
-               .enter                  = exynos4_enter_idle,
-               .exit_latency           = 1,
-               .target_residency       = 100000,
-               .flags                  = CPUIDLE_FLAG_TIME_VALID,
-               .name                   = "C0",
-               .desc                   = "ARM clock gating(WFI)",
-       },
+       [0] = ARM_CPUIDLE_WFI_STATE,
        [1] = {
                .enter                  = exynos4_enter_lowpower,
                .exit_latency           = 300,
@@ -63,8 +54,9 @@ static struct cpuidle_state exynos4_cpuidle_set[] __initdata = {
 static DEFINE_PER_CPU(struct cpuidle_device, exynos4_cpuidle_device);
 
 static struct cpuidle_driver exynos4_idle_driver = {
-       .name           = "exynos4_idle",
-       .owner          = THIS_MODULE,
+       .name                   = "exynos4_idle",
+       .owner                  = THIS_MODULE,
+       .en_core_tk_irqen       = 1,
 };
 
 /* Ext-GIC nIRQ/nFIQ is the only wakeup source in AFTR */
@@ -103,13 +95,8 @@ static int exynos4_enter_core0_aftr(struct cpuidle_device *dev,
                                struct cpuidle_driver *drv,
                                int index)
 {
-       struct timeval before, after;
-       int idle_time;
        unsigned long tmp;
 
-       local_irq_disable();
-       do_gettimeofday(&before);
-
        exynos4_set_wakeupmask();
 
        /* Set value of power down register for aftr mode */
@@ -150,34 +137,6 @@ static int exynos4_enter_core0_aftr(struct cpuidle_device *dev,
        /* Clear wakeup state register */
        __raw_writel(0x0, S5P_WAKEUP_STAT);
 
-       do_gettimeofday(&after);
-
-       local_irq_enable();
-       idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
-                   (after.tv_usec - before.tv_usec);
-
-       dev->last_residency = idle_time;
-       return index;
-}
-
-static int exynos4_enter_idle(struct cpuidle_device *dev,
-                               struct cpuidle_driver *drv,
-                               int index)
-{
-       struct timeval before, after;
-       int idle_time;
-
-       local_irq_disable();
-       do_gettimeofday(&before);
-
-       cpu_do_idle();
-
-       do_gettimeofday(&after);
-       local_irq_enable();
-       idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
-                   (after.tv_usec - before.tv_usec);
-
-       dev->last_residency = idle_time;
        return index;
 }
 
@@ -192,7 +151,7 @@ static int exynos4_enter_lowpower(struct cpuidle_device *dev,
                new_index = drv->safe_state_index;
 
        if (new_index == 0)
-               return exynos4_enter_idle(dev, drv, new_index);
+               return arm_cpuidle_simple_enter(dev, drv, new_index);
        else
                return exynos4_enter_core0_aftr(dev, drv, new_index);
 }