arch/arm/mach-exynos/pm.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright (c) 2011-2012 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
  * EXYNOS - Power Management 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/io.h>
 #include <linux/err.h>
 #include <linux/clk.h>

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

 #include <plat/cpu.h>
 #include <plat/pm.h>
 #include <plat/pll.h>
 #include <plat/regs-srom.h>

 #include <mach/regs-irq.h>
 #include <mach/regs-gpio.h>
 #include <mach/regs-clock.h>
 #include <mach/regs-pmu.h>
 #include <mach/pm-core.h>
 #include <mach/pmu.h>

 static struct sleep_save exynos4_set_clksrc[] = {
 	{ .reg = EXYNOS4_CLKSRC_MASK_TOP		, .val = 0x00000001, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_CAM		, .val = 0x11111111, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_TV			, .val = 0x00000111, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_LCD0		, .val = 0x00001111, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_MAUDIO		, .val = 0x00000001, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_FSYS		, .val = 0x01011111, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_PERIL0		, .val = 0x01111111, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_PERIL1		, .val = 0x01110111, },
 	{ .reg = EXYNOS4_CLKSRC_MASK_DMC		, .val = 0x00010000, },
 };

 static struct sleep_save exynos4210_set_clksrc[] = {
 	{ .reg = EXYNOS4210_CLKSRC_MASK_LCD1		, .val = 0x00001111, },
 };

 static struct sleep_save exynos4_epll_save[] = {
 	SAVE_ITEM(EXYNOS4_EPLL_CON0),
 	SAVE_ITEM(EXYNOS4_EPLL_CON1),
 };

 static struct sleep_save exynos4_vpll_save[] = {
 	SAVE_ITEM(EXYNOS4_VPLL_CON0),
 	SAVE_ITEM(EXYNOS4_VPLL_CON1),
 };

 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),
 };


 /* For Cortex-A9 Diagnostic and Power control register */
 static unsigned int save_arm_register[2];

 static int exynos_cpu_suspend(unsigned long arg)
 {
 #ifdef CONFIG_CACHE_L2X0
 	outer_flush_all();
 #endif

 	if (soc_is_exynos5250())
 		flush_cache_all();

 	/* issue the standby signal into the pm unit. */
 	cpu_do_idle();

 	/* we should never get past here */
 	panic("sleep resumed to originator?");
 }

 static void exynos_pm_prepare(void)
 {
 	unsigned int tmp;

 	s3c_pm_do_save(exynos_core_save, ARRAY_SIZE(exynos_core_save));

 	if (!soc_is_exynos5250()) {
 		s3c_pm_do_save(exynos4_epll_save, ARRAY_SIZE(exynos4_epll_save));
 		s3c_pm_do_save(exynos4_vpll_save, ARRAY_SIZE(exynos4_vpll_save));
 	} else {
 		s3c_pm_do_save(exynos5_sys_save, ARRAY_SIZE(exynos5_sys_save));
 		/* Disable USE_RETENTION of JPEG_MEM_OPTION */
 		tmp = __raw_readl(EXYNOS5_JPEG_MEM_OPTION);
 		tmp &= ~EXYNOS5_OPTION_USE_RETENTION;
 		__raw_writel(tmp, EXYNOS5_JPEG_MEM_OPTION);
 	}

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

 	exynos_sys_powerdown_conf(SYS_SLEEP);
 	__raw_writel(S5P_CHECK_SLEEP, S5P_INFORM1);

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

 	__raw_writel(virt_to_phys(s3c_cpu_resume), S5P_INFORM0);

 	/* Before enter central sequence mode, clock src register have to set */

 	if (!soc_is_exynos5250())
 		s3c_pm_do_restore_core(exynos4_set_clksrc, ARRAY_SIZE(exynos4_set_clksrc));

 	if (soc_is_exynos4210())
 		s3c_pm_do_restore_core(exynos4210_set_clksrc, ARRAY_SIZE(exynos4210_set_clksrc));

 }

 static int exynos_pm_add(struct device *dev, struct subsys_interface *sif)
 {
 	pm_cpu_prep = exynos_pm_prepare;
 	pm_cpu_sleep = exynos_cpu_suspend;

 	return 0;
 }

 static unsigned long pll_base_rate;

 static void exynos4_restore_pll(void)
 {
 	unsigned long pll_con, locktime, lockcnt;
 	unsigned long pll_in_rate;
 	unsigned int p_div, epll_wait = 0, vpll_wait = 0;

 	if (pll_base_rate == 0)
 		return;

 	pll_in_rate = pll_base_rate;

 	/* EPLL */
 	pll_con = exynos4_epll_save[0].val;

 	if (pll_con & (1 << 31)) {
 		pll_con &= (PLL46XX_PDIV_MASK << PLL46XX_PDIV_SHIFT);
 		p_div = (pll_con >> PLL46XX_PDIV_SHIFT);

 		pll_in_rate /= 1000000;

 		locktime = (3000 / pll_in_rate) * p_div;
 		lockcnt = locktime * 10000 / (10000 / pll_in_rate);

 		__raw_writel(lockcnt, EXYNOS4_EPLL_LOCK);

 		s3c_pm_do_restore_core(exynos4_epll_save,
 					ARRAY_SIZE(exynos4_epll_save));
 		epll_wait = 1;
 	}

 	pll_in_rate = pll_base_rate;

 	/* VPLL */
 	pll_con = exynos4_vpll_save[0].val;

 	if (pll_con & (1 << 31)) {
 		pll_in_rate /= 1000000;
 		/* 750us */
 		locktime = 750;
 		lockcnt = locktime * 10000 / (10000 / pll_in_rate);

 		__raw_writel(lockcnt, EXYNOS4_VPLL_LOCK);

 		s3c_pm_do_restore_core(exynos4_vpll_save,
 					ARRAY_SIZE(exynos4_vpll_save));
 		vpll_wait = 1;
 	}

 	/* Wait PLL locking */

 	do {
 		if (epll_wait) {
 			pll_con = __raw_readl(EXYNOS4_EPLL_CON0);
 			if (pll_con & (1 << EXYNOS4_EPLLCON0_LOCKED_SHIFT))
 				epll_wait = 0;
 		}

 		if (vpll_wait) {
 			pll_con = __raw_readl(EXYNOS4_VPLL_CON0);
 			if (pll_con & (1 << EXYNOS4_VPLLCON0_LOCKED_SHIFT))
 				vpll_wait = 0;
 		}
 	} while (epll_wait || vpll_wait);
 }

 static struct subsys_interface exynos_pm_interface = {
 	.name		= "exynos_pm",
 	.subsys		= &exynos_subsys,
 	.add_dev	= exynos_pm_add,
 };

 static __init int exynos_pm_drvinit(void)
 {
 	struct clk *pll_base;
 	unsigned int tmp;

 	s3c_pm_init();

 	/* All wakeup disable */

 	tmp = __raw_readl(S5P_WAKEUP_MASK);
 	tmp |= ((0xFF << 8) | (0x1F << 1));
 	__raw_writel(tmp, S5P_WAKEUP_MASK);

 	if (!soc_is_exynos5250()) {
 		pll_base = clk_get(NULL, "xtal");

 		if (!IS_ERR(pll_base)) {
 			pll_base_rate = clk_get_rate(pll_base);
 			clk_put(pll_base);
 		}
 	}

 	return subsys_interface_register(&exynos_pm_interface);
 }
 arch_initcall(exynos_pm_drvinit);

 static int exynos_pm_suspend(void)
 {
 	unsigned long tmp;

 	/* Setting Central Sequence Register for power down mode */

 	tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
 	tmp &= ~S5P_CENTRAL_LOWPWR_CFG;
 	__raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);

 	/* Setting SEQ_OPTION register */

 	tmp = (S5P_USE_STANDBY_WFI0 | S5P_USE_STANDBY_WFE0);
 	__raw_writel(tmp, S5P_CENTRAL_SEQ_OPTION);

 	if (!soc_is_exynos5250()) {
 		/* Save Power control register */
 		asm ("mrc p15, 0, %0, c15, c0, 0"
 		     : "=r" (tmp) : : "cc");
 		save_arm_register[0] = tmp;

 		/* Save Diagnostic register */
 		asm ("mrc p15, 0, %0, c15, c0, 1"
 		     : "=r" (tmp) : : "cc");
 		save_arm_register[1] = tmp;
 	}

 	return 0;
 }

 static void exynos_pm_resume(void)
 {
 	unsigned long tmp;

 	/*
 	 * If PMU failed while entering sleep mode, WFI will be
 	 * ignored by PMU and then exiting cpu_do_idle().
 	 * S5P_CENTRAL_LOWPWR_CFG bit will not be set automatically
 	 * in this situation.
 	 */
 	tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
 	if (!(tmp & S5P_CENTRAL_LOWPWR_CFG)) {
 		tmp |= S5P_CENTRAL_LOWPWR_CFG;
 		__raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
 		/* No need to perform below restore code */
 		goto early_wakeup;
 	}
 	if (!soc_is_exynos5250()) {
 		/* Restore Power control register */
 		tmp = save_arm_register[0];
 		asm volatile ("mcr p15, 0, %0, c15, c0, 0"
 			      : : "r" (tmp)
 			      : "cc");

 		/* Restore Diagnostic register */
 		tmp = save_arm_register[1];
 		asm volatile ("mcr p15, 0, %0, c15, c0, 1"
 			      : : "r" (tmp)
 			      : "cc");
 	}

 	/* For release retention */

 	__raw_writel((1 << 28), S5P_PAD_RET_MAUDIO_OPTION);
 	__raw_writel((1 << 28), S5P_PAD_RET_GPIO_OPTION);
 	__raw_writel((1 << 28), S5P_PAD_RET_UART_OPTION);
 	__raw_writel((1 << 28), S5P_PAD_RET_MMCA_OPTION);
 	__raw_writel((1 << 28), S5P_PAD_RET_MMCB_OPTION);
 	__raw_writel((1 << 28), S5P_PAD_RET_EBIA_OPTION);
 	__raw_writel((1 << 28), S5P_PAD_RET_EBIB_OPTION);

 	if (soc_is_exynos5250())
 		s3c_pm_do_restore(exynos5_sys_save,
 			ARRAY_SIZE(exynos5_sys_save));

 	s3c_pm_do_restore_core(exynos_core_save, ARRAY_SIZE(exynos_core_save));

 	if (!soc_is_exynos5250()) {
 		exynos4_restore_pll();

 #ifdef CONFIG_SMP
 		scu_enable(S5P_VA_SCU);
 #endif
 	}

 early_wakeup:

 	/* Clear SLEEP mode set in INFORM1 */
 	__raw_writel(0x0, S5P_INFORM1);

 	return;
 }

 static struct syscore_ops exynos_pm_syscore_ops = {
 	.suspend	= exynos_pm_suspend,
 	.resume		= exynos_pm_resume,
 };

 static __init int exynos_pm_syscore_init(void)
 {
 	register_syscore_ops(&exynos_pm_syscore_ops);
 	return 0;
 }
 arch_initcall(exynos_pm_syscore_init);
	/*
	* Copyright (c) 2011-2012 Samsung Electronics Co., Ltd.
	* http://www.samsung.com
	*
	* EXYNOS - Power Management 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/io.h>
	#include <linux/err.h>
	#include <linux/clk.h>

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

	#include <plat/cpu.h>
	#include <plat/pm.h>
	#include <plat/pll.h>
	#include <plat/regs-srom.h>

	#include <mach/regs-irq.h>
	#include <mach/regs-gpio.h>
	#include <mach/regs-clock.h>
	#include <mach/regs-pmu.h>
	#include <mach/pm-core.h>
	#include <mach/pmu.h>

	static struct sleep_save exynos4_set_clksrc[] = {
	{ .reg = EXYNOS4_CLKSRC_MASK_TOP , .val = 0x00000001, },
	{ .reg = EXYNOS4_CLKSRC_MASK_CAM , .val = 0x11111111, },
	{ .reg = EXYNOS4_CLKSRC_MASK_TV , .val = 0x00000111, },
	{ .reg = EXYNOS4_CLKSRC_MASK_LCD0 , .val = 0x00001111, },
	{ .reg = EXYNOS4_CLKSRC_MASK_MAUDIO , .val = 0x00000001, },
	{ .reg = EXYNOS4_CLKSRC_MASK_FSYS , .val = 0x01011111, },
	{ .reg = EXYNOS4_CLKSRC_MASK_PERIL0 , .val = 0x01111111, },
	{ .reg = EXYNOS4_CLKSRC_MASK_PERIL1 , .val = 0x01110111, },
	{ .reg = EXYNOS4_CLKSRC_MASK_DMC , .val = 0x00010000, },
	};

	static struct sleep_save exynos4210_set_clksrc[] = {
	{ .reg = EXYNOS4210_CLKSRC_MASK_LCD1 , .val = 0x00001111, },
	};

	static struct sleep_save exynos4_epll_save[] = {
	SAVE_ITEM(EXYNOS4_EPLL_CON0),
	SAVE_ITEM(EXYNOS4_EPLL_CON1),
	};

	static struct sleep_save exynos4_vpll_save[] = {
	SAVE_ITEM(EXYNOS4_VPLL_CON0),
	SAVE_ITEM(EXYNOS4_VPLL_CON1),
	};

	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),
	};


	/* For Cortex-A9 Diagnostic and Power control register */
	static unsigned int save_arm_register[2];

	static int exynos_cpu_suspend(unsigned long arg)
	{
	#ifdef CONFIG_CACHE_L2X0
	outer_flush_all();
	#endif

	if (soc_is_exynos5250())
	flush_cache_all();

	/* issue the standby signal into the pm unit. */
	cpu_do_idle();

	/* we should never get past here */
	panic("sleep resumed to originator?");
	}

	static void exynos_pm_prepare(void)
	{
	unsigned int tmp;

	s3c_pm_do_save(exynos_core_save, ARRAY_SIZE(exynos_core_save));

	if (!soc_is_exynos5250()) {
	s3c_pm_do_save(exynos4_epll_save, ARRAY_SIZE(exynos4_epll_save));
	s3c_pm_do_save(exynos4_vpll_save, ARRAY_SIZE(exynos4_vpll_save));
	} else {
	s3c_pm_do_save(exynos5_sys_save, ARRAY_SIZE(exynos5_sys_save));
	/* Disable USE_RETENTION of JPEG_MEM_OPTION */
	tmp = __raw_readl(EXYNOS5_JPEG_MEM_OPTION);
	tmp &= ~EXYNOS5_OPTION_USE_RETENTION;
	__raw_writel(tmp, EXYNOS5_JPEG_MEM_OPTION);
	}

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

	exynos_sys_powerdown_conf(SYS_SLEEP);
	__raw_writel(S5P_CHECK_SLEEP, S5P_INFORM1);

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

	__raw_writel(virt_to_phys(s3c_cpu_resume), S5P_INFORM0);

	/* Before enter central sequence mode, clock src register have to set */

	if (!soc_is_exynos5250())
	s3c_pm_do_restore_core(exynos4_set_clksrc, ARRAY_SIZE(exynos4_set_clksrc));

	if (soc_is_exynos4210())
	s3c_pm_do_restore_core(exynos4210_set_clksrc, ARRAY_SIZE(exynos4210_set_clksrc));

	}

	static int exynos_pm_add(struct device dev, struct subsys_interface sif)
	{
	pm_cpu_prep = exynos_pm_prepare;
	pm_cpu_sleep = exynos_cpu_suspend;

	return 0;
	}

	static unsigned long pll_base_rate;

	static void exynos4_restore_pll(void)
	{
	unsigned long pll_con, locktime, lockcnt;
	unsigned long pll_in_rate;
	unsigned int p_div, epll_wait = 0, vpll_wait = 0;

	if (pll_base_rate == 0)
	return;

	pll_in_rate = pll_base_rate;

	/* EPLL */
	pll_con = exynos4_epll_save[0].val;

	if (pll_con & (1 << 31)) {
	pll_con &= (PLL46XX_PDIV_MASK << PLL46XX_PDIV_SHIFT);
	p_div = (pll_con >> PLL46XX_PDIV_SHIFT);

	pll_in_rate /= 1000000;

	locktime = (3000 / pll_in_rate) * p_div;
	lockcnt = locktime * 10000 / (10000 / pll_in_rate);

	__raw_writel(lockcnt, EXYNOS4_EPLL_LOCK);

	s3c_pm_do_restore_core(exynos4_epll_save,
	ARRAY_SIZE(exynos4_epll_save));
	epll_wait = 1;
	}

	pll_in_rate = pll_base_rate;

	/* VPLL */
	pll_con = exynos4_vpll_save[0].val;

	if (pll_con & (1 << 31)) {
	pll_in_rate /= 1000000;
	/* 750us */
	locktime = 750;
	lockcnt = locktime * 10000 / (10000 / pll_in_rate);

	__raw_writel(lockcnt, EXYNOS4_VPLL_LOCK);

	s3c_pm_do_restore_core(exynos4_vpll_save,
	ARRAY_SIZE(exynos4_vpll_save));
	vpll_wait = 1;
	}

	/* Wait PLL locking */

	do {
	if (epll_wait) {
	pll_con = __raw_readl(EXYNOS4_EPLL_CON0);
	if (pll_con & (1 << EXYNOS4_EPLLCON0_LOCKED_SHIFT))
	epll_wait = 0;
	}

	if (vpll_wait) {
	pll_con = __raw_readl(EXYNOS4_VPLL_CON0);
	if (pll_con & (1 << EXYNOS4_VPLLCON0_LOCKED_SHIFT))
	vpll_wait = 0;
	}
	} while (epll_wait \|\| vpll_wait);
	}

	static struct subsys_interface exynos_pm_interface = {
	.name = "exynos_pm",
	.subsys = &exynos_subsys,
	.add_dev = exynos_pm_add,
	};

	static __init int exynos_pm_drvinit(void)
	{
	struct clk *pll_base;
	unsigned int tmp;

	s3c_pm_init();

	/* All wakeup disable */

	tmp = __raw_readl(S5P_WAKEUP_MASK);
	tmp \|= ((0xFF << 8) \| (0x1F << 1));
	__raw_writel(tmp, S5P_WAKEUP_MASK);

	if (!soc_is_exynos5250()) {
	pll_base = clk_get(NULL, "xtal");

	if (!IS_ERR(pll_base)) {
	pll_base_rate = clk_get_rate(pll_base);
	clk_put(pll_base);
	}
	}

	return subsys_interface_register(&exynos_pm_interface);
	}
	arch_initcall(exynos_pm_drvinit);

	static int exynos_pm_suspend(void)
	{
	unsigned long tmp;

	/* Setting Central Sequence Register for power down mode */

	tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
	tmp &= ~S5P_CENTRAL_LOWPWR_CFG;
	__raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);

	/* Setting SEQ_OPTION register */

	tmp = (S5P_USE_STANDBY_WFI0 \| S5P_USE_STANDBY_WFE0);
	__raw_writel(tmp, S5P_CENTRAL_SEQ_OPTION);

	if (!soc_is_exynos5250()) {
	/* Save Power control register */
	asm ("mrc p15, 0, %0, c15, c0, 0"
	: "=r" (tmp) : : "cc");
	save_arm_register[0] = tmp;

	/* Save Diagnostic register */
	asm ("mrc p15, 0, %0, c15, c0, 1"
	: "=r" (tmp) : : "cc");
	save_arm_register[1] = tmp;
	}

	return 0;
	}

	static void exynos_pm_resume(void)
	{
	unsigned long tmp;

	/*
	* If PMU failed while entering sleep mode, WFI will be
	* ignored by PMU and then exiting cpu_do_idle().
	* S5P_CENTRAL_LOWPWR_CFG bit will not be set automatically
	* in this situation.
	*/
	tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
	if (!(tmp & S5P_CENTRAL_LOWPWR_CFG)) {
	tmp \|= S5P_CENTRAL_LOWPWR_CFG;
	__raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
	/* No need to perform below restore code */
	goto early_wakeup;
	}
	if (!soc_is_exynos5250()) {
	/* Restore Power control register */
	tmp = save_arm_register[0];
	asm volatile ("mcr p15, 0, %0, c15, c0, 0"
	: : "r" (tmp)
	: "cc");

	/* Restore Diagnostic register */
	tmp = save_arm_register[1];
	asm volatile ("mcr p15, 0, %0, c15, c0, 1"
	: : "r" (tmp)
	: "cc");
	}

	/* For release retention */

	__raw_writel((1 << 28), S5P_PAD_RET_MAUDIO_OPTION);
	__raw_writel((1 << 28), S5P_PAD_RET_GPIO_OPTION);
	__raw_writel((1 << 28), S5P_PAD_RET_UART_OPTION);
	__raw_writel((1 << 28), S5P_PAD_RET_MMCA_OPTION);
	__raw_writel((1 << 28), S5P_PAD_RET_MMCB_OPTION);
	__raw_writel((1 << 28), S5P_PAD_RET_EBIA_OPTION);
	__raw_writel((1 << 28), S5P_PAD_RET_EBIB_OPTION);

	if (soc_is_exynos5250())
	s3c_pm_do_restore(exynos5_sys_save,
	ARRAY_SIZE(exynos5_sys_save));

	s3c_pm_do_restore_core(exynos_core_save, ARRAY_SIZE(exynos_core_save));

	if (!soc_is_exynos5250()) {
	exynos4_restore_pll();

	#ifdef CONFIG_SMP
	scu_enable(S5P_VA_SCU);
	#endif
	}

	early_wakeup:

	/* Clear SLEEP mode set in INFORM1 */
	__raw_writel(0x0, S5P_INFORM1);

	return;
	}

	static struct syscore_ops exynos_pm_syscore_ops = {
	.suspend = exynos_pm_suspend,
	.resume = exynos_pm_resume,
	};

	static __init int exynos_pm_syscore_init(void)
	{
	register_syscore_ops(&exynos_pm_syscore_ops);
	return 0;
	}
	arch_initcall(exynos_pm_syscore_init);