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Commit 2eb89f89 authored by Daniel Lezcano's avatar Daniel Lezcano Committed by Kukjin Kim
Browse files

ARM: EXYNOS: factor out the idle states 



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: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: default avatarAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent d9cdeb81

arch/arm/mach-exynos/cpuidle.c

+17 −28
Original line number Diff line number Diff line
@@ -41,7 +41,13 @@ static int exynos4_enter_lowpower(struct cpuidle_device *dev, 
				struct cpuidle_driver *drv,

				int index);



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,

	.en_core_tk_irqen	= 1,

	.states = {

		[0] = ARM_CPUIDLE_WFI_STATE,

		[1] = {

			.enter			= exynos4_enter_lowpower,
@@ -51,14 +57,9 @@ static struct cpuidle_state exynos4_cpuidle_set[] __initdata = { 
			.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,

	},

	.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,");