Commit 0d713cf1 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz Committed by Kukjin Kim
Browse files

ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=y 



Fix building of exynos_defconfig with CONFIG_PM_SLEEP disabled and
CONFIG_ARM_EXYNOS_CPUIDLE enabled by:

* adding EXYNOS_CPU_SUSPEND config option
* always building sleep.o
* building pm.o if EXYNOS_CPU_SUSPEND is enabled
* moving suspend specific code from pm.c to suspend.c
* enabling pm-common.o build also for EXYNOS_CPU_SUSPEND option

[ Please note that there are no changes in the code moved from pm.c
  to suspend.c except making few functions non-static and cleaning
  up includes. ]

Also while at it update Copyright dates.

The build error messages:
drivers/built-in.o: In function `exynos_enter_core0_aftr':
/home/bzolnier/linux/drivers/cpuidle/cpuidle-exynos.c:36: undefined reference to `cpu_suspend'
arch/arm/mach-exynos/built-in.o:(.data+0x74): undefined reference to `exynos_enter_aftr'
make: *** [vmlinux] Error 1

This patch has been tested on Exynos4210 based Origen board.

Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 42d5dc37

arch/arm/mach-exynos/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -123,4 +123,9 @@ config EXYNOS5420_MCPM 
	  This is needed to provide CPU and cluster power management

	  on Exynos5420 implementing big.LITTLE.



config EXYNOS_CPU_SUSPEND

	bool

	select ARM_CPU_SUSPEND

	default PM_SLEEP || ARM_EXYNOS_CPUIDLE



endif

arch/arm/mach-exynos/Makefile

+3 −2
Original line number Diff line number Diff line
@@ -9,9 +9,10 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) += -I$(srctree)/$(src)/include -I$(srctree) 


# Core



obj-$(CONFIG_ARCH_EXYNOS)	+= exynos.o pmu.o exynos-smc.o firmware.o

obj-$(CONFIG_ARCH_EXYNOS)	+= exynos.o pmu.o exynos-smc.o firmware.o sleep.o



obj-$(CONFIG_PM_SLEEP)		+= pm.o sleep.o

obj-$(CONFIG_EXYNOS_CPU_SUSPEND) += pm.o

obj-$(CONFIG_PM_SLEEP)		+= suspend.o

obj-$(CONFIG_PM_GENERIC_DOMAINS) += pm_domains.o



obj-$(CONFIG_SMP)		+= platsmp.o headsmp.o

arch/arm/mach-exynos/common.h

+4 −0
Original line number Diff line number Diff line
@@ -164,6 +164,10 @@ extern int exynos_cpu_power_state(int cpu); 
extern void exynos_cluster_power_down(int cluster);

extern void exynos_cluster_power_up(int cluster);

extern int  exynos_cluster_power_state(int cluster);

extern void exynos_cpu_save_register(void);

extern void exynos_cpu_restore_register(void);

extern void exynos_pm_central_suspend(void);

extern int exynos_pm_central_resume(void);

extern void exynos_enter_aftr(void);



extern void s5p_init_cpu(void __iomem *cpuid_addr);

arch/arm/mach-exynos/pm.c

+5 −333
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2011-2012 Samsung Electronics Co., Ltd.

 * Copyright (c) 2011-2014 Samsung Electronics Co., Ltd.

 *		http://www.samsung.com

 *

 * EXYNOS - Power Management support
@@ -15,119 +15,20 @@ 


#include <linux/init.h>

#include <linux/suspend.h>

#include <linux/syscore_ops.h>

#include <linux/cpu_pm.h>

#include <linux/io.h>

#include <linux/irqchip/arm-gic.h>

#include <linux/err.h>

#include <linux/clk.h>



#include <asm/cacheflush.h>

#include <asm/firmware.h>

#include <asm/hardware/cache-l2x0.h>

#include <asm/smp_scu.h>

#include <asm/suspend.h>



#include <plat/pm-common.h>

#include <plat/regs-srom.h>



#include <mach/map.h>



#include "common.h"

#include "regs-pmu.h"

#include "regs-sys.h"



#define REG_TABLE_END (-1U)



/**

 * struct exynos_wkup_irq - Exynos GIC to PMU IRQ mapping

 * @hwirq: Hardware IRQ signal of the GIC

 * @mask: Mask in PMU wake-up mask register

 */

struct exynos_wkup_irq {

	unsigned int hwirq;

	u32 mask;

};



static struct sleep_save exynos5_sys_save[] = {

	SAVE_ITEM(EXYNOS5_SYS_I2C_CFG),

};



static struct sleep_save exynos_core_save[] = {

	/* SROM side */

	SAVE_ITEM(S5P_SROM_BW),

	SAVE_ITEM(S5P_SROM_BC0),

	SAVE_ITEM(S5P_SROM_BC1),

	SAVE_ITEM(S5P_SROM_BC2),

	SAVE_ITEM(S5P_SROM_BC3),

};



struct exynos_pm_data {

	const struct exynos_wkup_irq *wkup_irq;

	struct sleep_save *extra_save;

	int num_extra_save;

	unsigned int wake_disable_mask;

	unsigned int *release_ret_regs;



	void (*pm_prepare)(void);

	void (*pm_resume)(void);

	int (*pm_suspend)(void);

	int (*cpu_suspend)(unsigned long);

};



struct exynos_pm_data *pm_data;



/*

 * GIC wake-up support

 */



static u32 exynos_irqwake_intmask = 0xffffffff;



static const struct exynos_wkup_irq exynos4_wkup_irq[] = {

	{ 76, BIT(1) }, /* RTC alarm */

	{ 77, BIT(2) }, /* RTC tick */

	{ /* sentinel */ },

};



static const struct exynos_wkup_irq exynos5250_wkup_irq[] = {

	{ 75, BIT(1) }, /* RTC alarm */

	{ 76, BIT(2) }, /* RTC tick */

	{ /* sentinel */ },

};



unsigned int exynos_release_ret_regs[] = {

	S5P_PAD_RET_MAUDIO_OPTION,

	S5P_PAD_RET_GPIO_OPTION,

	S5P_PAD_RET_UART_OPTION,

	S5P_PAD_RET_MMCA_OPTION,

	S5P_PAD_RET_MMCB_OPTION,

	S5P_PAD_RET_EBIA_OPTION,

	S5P_PAD_RET_EBIB_OPTION,

	REG_TABLE_END,

};



static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)

{

	const struct exynos_wkup_irq *wkup_irq;



	if (!pm_data->wkup_irq)

		return -ENOENT;

	wkup_irq = pm_data->wkup_irq;



	while (wkup_irq->mask) {

		if (wkup_irq->hwirq == data->hwirq) {

			if (!state)

				exynos_irqwake_intmask |= wkup_irq->mask;

			else

				exynos_irqwake_intmask &= ~wkup_irq->mask;

			return 0;

		}

		++wkup_irq;

	}



	return -ENOENT;

}



static inline void __iomem *exynos_boot_vector_addr(void)

{

	if (samsung_rev() == EXYNOS4210_REV_1_1)
@@ -147,12 +48,11 @@ static inline void __iomem *exynos_boot_vector_flag(void) 
}



#define S5P_CHECK_AFTR  0xFCBA0D10

#define S5P_CHECK_SLEEP 0x00000BAD



/* For Cortex-A9 Diagnostic and Power control register */

static unsigned int save_arm_register[2];



static void exynos_cpu_save_register(void)

void exynos_cpu_save_register(void)

{

	unsigned long tmp;
@@ -169,7 +69,7 @@ static void exynos_cpu_save_register(void) 
	save_arm_register[1] = tmp;

}



static void exynos_cpu_restore_register(void)

void exynos_cpu_restore_register(void)

{

	unsigned long tmp;
@@ -188,7 +88,7 @@ static void exynos_cpu_restore_register(void) 
		      : "cc");

}



static void exynos_pm_central_suspend(void)

void exynos_pm_central_suspend(void)

{

	unsigned long tmp;
@@ -202,7 +102,7 @@ static void exynos_pm_central_suspend(void) 
		       S5P_CENTRAL_SEQ_OPTION);

}



static int exynos_pm_central_resume(void)

int exynos_pm_central_resume(void)

{

	unsigned long tmp;
@@ -275,231 +175,3 @@ void exynos_enter_aftr(void) 


	cpu_pm_exit();

}
 


static int exynos_cpu_do_idle(void)

{

	/* issue the standby signal into the pm unit. */

	cpu_do_idle();



	pr_info("Failed to suspend the system\n");

	return 1; /* Aborting suspend */

}



static int exynos_cpu_suspend(unsigned long arg)

{

	flush_cache_all();

	outer_flush_all();

	return exynos_cpu_do_idle();

}



static void exynos_pm_set_wakeup_mask(void)

{

	/* Set wake-up mask registers */

	pmu_raw_writel(exynos_get_eint_wake_mask(), S5P_EINT_WAKEUP_MASK);

	pmu_raw_writel(exynos_irqwake_intmask & ~(1 << 31), S5P_WAKEUP_MASK);

}



static void exynos_pm_enter_sleep_mode(void)

{

	/* Set value of power down register for sleep mode */

	exynos_sys_powerdown_conf(SYS_SLEEP);

	pmu_raw_writel(S5P_CHECK_SLEEP, S5P_INFORM1);



	/* ensure at least INFORM0 has the resume address */

	pmu_raw_writel(virt_to_phys(exynos_cpu_resume), S5P_INFORM0);

}



static void exynos_pm_prepare(void)

{

	/* Set wake-up mask registers */

	exynos_pm_set_wakeup_mask();



	s3c_pm_do_save(exynos_core_save, ARRAY_SIZE(exynos_core_save));



	 if (pm_data->extra_save)

		s3c_pm_do_save(pm_data->extra_save,

				pm_data->num_extra_save);



	exynos_pm_enter_sleep_mode();

}



static int exynos_pm_suspend(void)

{

	exynos_pm_central_suspend();



	if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)

		exynos_cpu_save_register();



	return 0;

}



static void exynos_pm_release_retention(void)

{

	unsigned int i;



	for (i = 0; (pm_data->release_ret_regs[i] != REG_TABLE_END); i++)

		pmu_raw_writel(EXYNOS_WAKEUP_FROM_LOWPWR,

				pm_data->release_ret_regs[i]);

}



static void exynos_pm_resume(void)

{

	u32 cpuid = read_cpuid_part();



	if (exynos_pm_central_resume())

		goto early_wakeup;



	/* For release retention */

	exynos_pm_release_retention();



	if (pm_data->extra_save)

		s3c_pm_do_restore_core(pm_data->extra_save,

					pm_data->num_extra_save);



	s3c_pm_do_restore_core(exynos_core_save, ARRAY_SIZE(exynos_core_save));



	if (cpuid == ARM_CPU_PART_CORTEX_A9)

		scu_enable(S5P_VA_SCU);



	if (call_firmware_op(resume) == -ENOSYS

	    && cpuid == ARM_CPU_PART_CORTEX_A9)

		exynos_cpu_restore_register();



early_wakeup:



	/* Clear SLEEP mode set in INFORM1 */

	pmu_raw_writel(0x0, S5P_INFORM1);

}



/*

 * Suspend Ops

 */



static int exynos_suspend_enter(suspend_state_t state)

{

	int ret;



	s3c_pm_debug_init();



	S3C_PMDBG("%s: suspending the system...\n", __func__);



	S3C_PMDBG("%s: wakeup masks: %08x,%08x\n", __func__,

			exynos_irqwake_intmask, exynos_get_eint_wake_mask());



	if (exynos_irqwake_intmask == -1U

	    && exynos_get_eint_wake_mask() == -1U) {

		pr_err("%s: No wake-up sources!\n", __func__);

		pr_err("%s: Aborting sleep\n", __func__);

		return -EINVAL;

	}



	s3c_pm_save_uarts();

	if (pm_data->pm_prepare)

		pm_data->pm_prepare();

	flush_cache_all();

	s3c_pm_check_store();



	ret = call_firmware_op(suspend);

	if (ret == -ENOSYS)

		ret = cpu_suspend(0, pm_data->cpu_suspend);

	if (ret)

		return ret;



	s3c_pm_restore_uarts();



	S3C_PMDBG("%s: wakeup stat: %08x\n", __func__,

			pmu_raw_readl(S5P_WAKEUP_STAT));



	s3c_pm_check_restore();



	S3C_PMDBG("%s: resuming the system...\n", __func__);



	return 0;

}



static int exynos_suspend_prepare(void)

{

	s3c_pm_check_prepare();



	return 0;

}



static void exynos_suspend_finish(void)

{

	s3c_pm_check_cleanup();

}



static const struct platform_suspend_ops exynos_suspend_ops = {

	.enter		= exynos_suspend_enter,

	.prepare	= exynos_suspend_prepare,

	.finish		= exynos_suspend_finish,

	.valid		= suspend_valid_only_mem,

};



static const struct exynos_pm_data exynos4_pm_data = {

	.wkup_irq	= exynos4_wkup_irq,

	.wake_disable_mask = ((0xFF << 8) | (0x1F << 1)),

	.release_ret_regs = exynos_release_ret_regs,

	.pm_suspend	= exynos_pm_suspend,

	.pm_resume	= exynos_pm_resume,

	.pm_prepare	= exynos_pm_prepare,

	.cpu_suspend	= exynos_cpu_suspend,

};



static const struct exynos_pm_data exynos5250_pm_data = {

	.wkup_irq	= exynos5250_wkup_irq,

	.wake_disable_mask = ((0xFF << 8) | (0x1F << 1)),

	.release_ret_regs = exynos_release_ret_regs,

	.extra_save	= exynos5_sys_save,

	.num_extra_save	= ARRAY_SIZE(exynos5_sys_save),

	.pm_suspend	= exynos_pm_suspend,

	.pm_resume	= exynos_pm_resume,

	.pm_prepare	= exynos_pm_prepare,

	.cpu_suspend	= exynos_cpu_suspend,

};



static struct of_device_id exynos_pmu_of_device_ids[] = {

	{

		.compatible = "samsung,exynos4210-pmu",

		.data = &exynos4_pm_data,

	}, {

		.compatible = "samsung,exynos4212-pmu",

		.data = &exynos4_pm_data,

	}, {

		.compatible = "samsung,exynos4412-pmu",

		.data = &exynos4_pm_data,

	}, {

		.compatible = "samsung,exynos5250-pmu",

		.data = &exynos5250_pm_data,

	},

	{ /*sentinel*/ },

};



static struct syscore_ops exynos_pm_syscore_ops;



void __init exynos_pm_init(void)

{

	const struct of_device_id *match;

	u32 tmp;



	of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match);

	if (!match) {

		pr_err("Failed to find PMU node\n");

		return;

	}

	pm_data = (struct exynos_pm_data *) match->data;



	/* Platform-specific GIC callback */

	gic_arch_extn.irq_set_wake = exynos_irq_set_wake;



	/* All wakeup disable */

	tmp = pmu_raw_readl(S5P_WAKEUP_MASK);

	tmp |= pm_data->wake_disable_mask;

	pmu_raw_writel(tmp, S5P_WAKEUP_MASK);



	exynos_pm_syscore_ops.suspend	= pm_data->pm_suspend;

	exynos_pm_syscore_ops.resume	= pm_data->pm_resume;



	register_syscore_ops(&exynos_pm_syscore_ops);

	suspend_set_ops(&exynos_suspend_ops);

}

arch/arm/mach-exynos/suspend.c

0 → 100644
+356 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2011-2014 Samsung Electronics Co., Ltd.

 *		http://www.samsung.com

 *

 * EXYNOS - Suspend support

 *

 * Based on arch/arm/mach-s3c2410/pm.c

 * Copyright (c) 2006 Simtec Electronics

 *	Ben Dooks <ben@simtec.co.uk>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#include <linux/init.h>

#include <linux/suspend.h>

#include <linux/syscore_ops.h>

#include <linux/cpu_pm.h>

#include <linux/io.h>

#include <linux/irqchip/arm-gic.h>

#include <linux/err.h>



#include <asm/cacheflush.h>

#include <asm/hardware/cache-l2x0.h>

#include <asm/firmware.h>

#include <asm/smp_scu.h>

#include <asm/suspend.h>



#include <plat/pm-common.h>

#include <plat/regs-srom.h>



#include "common.h"

#include "regs-pmu.h"

#include "regs-sys.h"



#define S5P_CHECK_SLEEP 0x00000BAD



#define REG_TABLE_END (-1U)



/**

 * struct exynos_wkup_irq - Exynos GIC to PMU IRQ mapping

 * @hwirq: Hardware IRQ signal of the GIC

 * @mask: Mask in PMU wake-up mask register

 */

struct exynos_wkup_irq {

	unsigned int hwirq;

	u32 mask;

};



static struct sleep_save exynos5_sys_save[] = {

	SAVE_ITEM(EXYNOS5_SYS_I2C_CFG),

};



static struct sleep_save exynos_core_save[] = {

	/* SROM side */

	SAVE_ITEM(S5P_SROM_BW),

	SAVE_ITEM(S5P_SROM_BC0),

	SAVE_ITEM(S5P_SROM_BC1),

	SAVE_ITEM(S5P_SROM_BC2),

	SAVE_ITEM(S5P_SROM_BC3),

};



struct exynos_pm_data {

	const struct exynos_wkup_irq *wkup_irq;

	struct sleep_save *extra_save;

	int num_extra_save;

	unsigned int wake_disable_mask;

	unsigned int *release_ret_regs;



	void (*pm_prepare)(void);

	void (*pm_resume)(void);

	int (*pm_suspend)(void);

	int (*cpu_suspend)(unsigned long);

};



struct exynos_pm_data *pm_data;



/*

 * GIC wake-up support

 */



static u32 exynos_irqwake_intmask = 0xffffffff;



static const struct exynos_wkup_irq exynos4_wkup_irq[] = {

	{ 76, BIT(1) }, /* RTC alarm */

	{ 77, BIT(2) }, /* RTC tick */

	{ /* sentinel */ },

};



static const struct exynos_wkup_irq exynos5250_wkup_irq[] = {

	{ 75, BIT(1) }, /* RTC alarm */

	{ 76, BIT(2) }, /* RTC tick */

	{ /* sentinel */ },

};



unsigned int exynos_release_ret_regs[] = {

	S5P_PAD_RET_MAUDIO_OPTION,

	S5P_PAD_RET_GPIO_OPTION,

	S5P_PAD_RET_UART_OPTION,

	S5P_PAD_RET_MMCA_OPTION,

	S5P_PAD_RET_MMCB_OPTION,

	S5P_PAD_RET_EBIA_OPTION,

	S5P_PAD_RET_EBIB_OPTION,

	REG_TABLE_END,

};



static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)

{

	const struct exynos_wkup_irq *wkup_irq;



	if (!pm_data->wkup_irq)

		return -ENOENT;

	wkup_irq = pm_data->wkup_irq;



	while (wkup_irq->mask) {

		if (wkup_irq->hwirq == data->hwirq) {

			if (!state)

				exynos_irqwake_intmask |= wkup_irq->mask;

			else

				exynos_irqwake_intmask &= ~wkup_irq->mask;

			return 0;

		}

		++wkup_irq;

	}



	return -ENOENT;

}



static int exynos_cpu_do_idle(void)

{

	/* issue the standby signal into the pm unit. */

	cpu_do_idle();



	pr_info("Failed to suspend the system\n");

	return 1; /* Aborting suspend */

}



static int exynos_cpu_suspend(unsigned long arg)

{

	flush_cache_all();

	outer_flush_all();

	return exynos_cpu_do_idle();

}



static void exynos_pm_set_wakeup_mask(void)

{

	/* Set wake-up mask registers */

	pmu_raw_writel(exynos_get_eint_wake_mask(), S5P_EINT_WAKEUP_MASK);

	pmu_raw_writel(exynos_irqwake_intmask & ~(1 << 31), S5P_WAKEUP_MASK);

}



static void exynos_pm_enter_sleep_mode(void)

{

	/* Set value of power down register for sleep mode */

	exynos_sys_powerdown_conf(SYS_SLEEP);

	pmu_raw_writel(S5P_CHECK_SLEEP, S5P_INFORM1);



	/* ensure at least INFORM0 has the resume address */

	pmu_raw_writel(virt_to_phys(exynos_cpu_resume), S5P_INFORM0);

}



static void exynos_pm_prepare(void)

{

	/* Set wake-up mask registers */

	exynos_pm_set_wakeup_mask();



	s3c_pm_do_save(exynos_core_save, ARRAY_SIZE(exynos_core_save));



	 if (pm_data->extra_save)

		s3c_pm_do_save(pm_data->extra_save,

				pm_data->num_extra_save);



	exynos_pm_enter_sleep_mode();

}



static int exynos_pm_suspend(void)

{

	exynos_pm_central_suspend();



	if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)

		exynos_cpu_save_register();



	return 0;

}



static void exynos_pm_release_retention(void)

{

	unsigned int i;



	for (i = 0; (pm_data->release_ret_regs[i] != REG_TABLE_END); i++)

		pmu_raw_writel(EXYNOS_WAKEUP_FROM_LOWPWR,

				pm_data->release_ret_regs[i]);

}



static void exynos_pm_resume(void)

{

	u32 cpuid = read_cpuid_part();



	if (exynos_pm_central_resume())

		goto early_wakeup;



	/* For release retention */

	exynos_pm_release_retention();



	if (pm_data->extra_save)

		s3c_pm_do_restore_core(pm_data->extra_save,

					pm_data->num_extra_save);



	s3c_pm_do_restore_core(exynos_core_save, ARRAY_SIZE(exynos_core_save));



	if (cpuid == ARM_CPU_PART_CORTEX_A9)

		scu_enable(S5P_VA_SCU);



	if (call_firmware_op(resume) == -ENOSYS

	    && cpuid == ARM_CPU_PART_CORTEX_A9)

		exynos_cpu_restore_register();



early_wakeup:



	/* Clear SLEEP mode set in INFORM1 */

	pmu_raw_writel(0x0, S5P_INFORM1);

}



/*

 * Suspend Ops

 */



static int exynos_suspend_enter(suspend_state_t state)

{

	int ret;



	s3c_pm_debug_init();



	S3C_PMDBG("%s: suspending the system...\n", __func__);



	S3C_PMDBG("%s: wakeup masks: %08x,%08x\n", __func__,

			exynos_irqwake_intmask, exynos_get_eint_wake_mask());



	if (exynos_irqwake_intmask == -1U

	    && exynos_get_eint_wake_mask() == -1U) {

		pr_err("%s: No wake-up sources!\n", __func__);

		pr_err("%s: Aborting sleep\n", __func__);

		return -EINVAL;

	}



	s3c_pm_save_uarts();

	if (pm_data->pm_prepare)

		pm_data->pm_prepare();

	flush_cache_all();

	s3c_pm_check_store();



	ret = call_firmware_op(suspend);

	if (ret == -ENOSYS)

		ret = cpu_suspend(0, pm_data->cpu_suspend);

	if (ret)

		return ret;



	s3c_pm_restore_uarts();



	S3C_PMDBG("%s: wakeup stat: %08x\n", __func__,

			pmu_raw_readl(S5P_WAKEUP_STAT));



	s3c_pm_check_restore();



	S3C_PMDBG("%s: resuming the system...\n", __func__);



	return 0;

}



static int exynos_suspend_prepare(void)

{

	s3c_pm_check_prepare();



	return 0;

}



static void exynos_suspend_finish(void)

{

	s3c_pm_check_cleanup();

}



static const struct platform_suspend_ops exynos_suspend_ops = {

	.enter		= exynos_suspend_enter,

	.prepare	= exynos_suspend_prepare,

	.finish		= exynos_suspend_finish,

	.valid		= suspend_valid_only_mem,

};



static const struct exynos_pm_data exynos4_pm_data = {

	.wkup_irq	= exynos4_wkup_irq,

	.wake_disable_mask = ((0xFF << 8) | (0x1F << 1)),

	.release_ret_regs = exynos_release_ret_regs,

	.pm_suspend	= exynos_pm_suspend,

	.pm_resume	= exynos_pm_resume,

	.pm_prepare	= exynos_pm_prepare,

	.cpu_suspend	= exynos_cpu_suspend,

};



static const struct exynos_pm_data exynos5250_pm_data = {

	.wkup_irq	= exynos5250_wkup_irq,

	.wake_disable_mask = ((0xFF << 8) | (0x1F << 1)),

	.release_ret_regs = exynos_release_ret_regs,

	.extra_save	= exynos5_sys_save,

	.num_extra_save	= ARRAY_SIZE(exynos5_sys_save),

	.pm_suspend	= exynos_pm_suspend,

	.pm_resume	= exynos_pm_resume,

	.pm_prepare	= exynos_pm_prepare,

	.cpu_suspend	= exynos_cpu_suspend,

};



static struct of_device_id exynos_pmu_of_device_ids[] = {

	{

		.compatible = "samsung,exynos4210-pmu",

		.data = &exynos4_pm_data,

	}, {

		.compatible = "samsung,exynos4212-pmu",

		.data = &exynos4_pm_data,

	}, {

		.compatible = "samsung,exynos4412-pmu",

		.data = &exynos4_pm_data,

	}, {

		.compatible = "samsung,exynos5250-pmu",

		.data = &exynos5250_pm_data,

	},

	{ /*sentinel*/ },

};



static struct syscore_ops exynos_pm_syscore_ops;



void __init exynos_pm_init(void)

{

	const struct of_device_id *match;

	u32 tmp;



	of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match);

	if (!match) {

		pr_err("Failed to find PMU node\n");

		return;

	}

	pm_data = (struct exynos_pm_data *) match->data;



	/* Platform-specific GIC callback */

	gic_arch_extn.irq_set_wake = exynos_irq_set_wake;



	/* All wakeup disable */

	tmp = pmu_raw_readl(S5P_WAKEUP_MASK);

	tmp |= pm_data->wake_disable_mask;

	pmu_raw_writel(tmp, S5P_WAKEUP_MASK);



	exynos_pm_syscore_ops.suspend	= pm_data->pm_suspend;

	exynos_pm_syscore_ops.resume	= pm_data->pm_resume;



	register_syscore_ops(&exynos_pm_syscore_ops);

	suspend_set_ops(&exynos_suspend_ops);

}

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