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ARM: EXYNOS: factor out the idle states

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The states are defined in the driver. We can get rid of the
intermediate cpuidle states initialization and the memcpy by
directly initializing the driver states.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Daniel Lezcano 2013-01-18 21:57:58 -08:00 committed by Kukjin Kim
parent d9cdeb814f
commit 2eb89f893e
1 changed files with 17 additions and 28 deletions
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45
arch/arm/mach-exynos/cpuidle.c
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@ -41,24 +41,25 @@ static int exynos4_enter_lowpower(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index);
static struct cpuidle_state exynos4_cpuidle_set[] __initdata = {
[0] = ARM_CPUIDLE_WFI_STATE,
[1] = {
.enter = exynos4_enter_lowpower,
.exit_latency = 300,
.target_residency = 100000,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "C1",
.desc = "ARM power down",
},
};
static DEFINE_PER_CPU(struct cpuidle_device, exynos4_cpuidle_device);
static struct cpuidle_driver exynos4_idle_driver = {
.name = "exynos4_idle",
.owner = THIS_MODULE,
.en_core_tk_irqen = 1,
.states = {
[0] = ARM_CPUIDLE_WFI_STATE,
[1] = {
.enter = exynos4_enter_lowpower,
.exit_latency = 300,
.target_residency = 100000,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "C1",
.desc = "ARM power down",
},
},
.state_count = 2,
.safe_state_index = 0,
};
/* Ext-GIC nIRQ/nFIQ is the only wakeup source in AFTR */
@ -193,33 +194,21 @@ static void __init exynos5_core_down_clk(void)
static int __init exynos4_init_cpuidle(void)
{
int i, max_cpuidle_state, cpu_id;
int cpu_id;
struct cpuidle_device *device;
struct cpuidle_driver *drv = &exynos4_idle_driver;
if (soc_is_exynos5250())
exynos5_core_down_clk();
/* Setup cpuidle driver */
drv->state_count = (sizeof(exynos4_cpuidle_set) /
sizeof(struct cpuidle_state));
max_cpuidle_state = drv->state_count;
for (i = 0; i < max_cpuidle_state; i++) {
memcpy(&drv->states[i], &exynos4_cpuidle_set[i],
sizeof(struct cpuidle_state));
}
drv->safe_state_index = 0;
cpuidle_register_driver(&exynos4_idle_driver);
for_each_cpu(cpu_id, cpu_online_mask) {
device = &per_cpu(exynos4_cpuidle_device, cpu_id);
device->cpu = cpu_id;
if (cpu_id == 0)
device->state_count = (sizeof(exynos4_cpuidle_set) /
sizeof(struct cpuidle_state));
else
device->state_count = 1; /* Support IDLE only */
/* Support IDLE only */
if (cpu_id != 0)
device->state_count = 1;
if (cpuidle_register_device(device)) {
printk(KERN_ERR "CPUidle register device failed\n,");