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

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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>
This commit is contained in:
Amit Daniel Kachhap 2012-05-12 16:29:21 +09:00 committed by Kukjin Kim
parent 81d413554a
commit 06c77b3ce1
1 changed files with 6 additions and 47 deletions
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53
arch/arm/mach-exynos/cpuidle.c
View file

@ -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);
}