/*
 * Copyright (c) 2011-2014 Samsung Electronics Co., Ltd.
 *		http://www.samsung.com/
 *
 * EXYNOS - CPU PMU(Power Management Unit) support
 *
 * 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/io.h>
#include <linux/of.h>
#include <linux/platform_device.h>

#include "exynos-pmu.h"
#include "regs-pmu.h"

#define PMU_TABLE_END	(-1U)

struct exynos_pmu_conf {
	unsigned int offset;
	unsigned int val[NUM_SYS_POWERDOWN];
};

struct exynos_pmu_data {
	const struct exynos_pmu_conf *pmu_config;
	const struct exynos_pmu_conf *pmu_config_extra;

	void (*pmu_init)(void);
	void (*powerdown_conf)(enum sys_powerdown);
};

struct exynos_pmu_context {
	struct device *dev;
	const struct exynos_pmu_data *pmu_data;
};

static void __iomem *pmu_base_addr;
static struct exynos_pmu_context *pmu_context;

static inline void pmu_raw_writel(u32 val, u32 offset)
{
	writel_relaxed(val, pmu_base_addr + offset);
}

static inline u32 pmu_raw_readl(u32 offset)
{
	return readl_relaxed(pmu_base_addr + offset);
}

static const struct exynos_pmu_conf exynos4210_pmu_config[] = {
	/* { .offset = offset, .val = { AFTR, LPA, SLEEP } */
	{ S5P_ARM_CORE0_LOWPWR,			{ 0x0, 0x0, 0x2 } },
	{ S5P_DIS_IRQ_CORE0,			{ 0x0, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_CENTRAL0,			{ 0x0, 0x0, 0x0 } },
	{ S5P_ARM_CORE1_LOWPWR,			{ 0x0, 0x0, 0x2 } },
	{ S5P_DIS_IRQ_CORE1,			{ 0x0, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_CENTRAL1,			{ 0x0, 0x0, 0x0 } },
	{ S5P_ARM_COMMON_LOWPWR,		{ 0x0, 0x0, 0x2 } },
	{ S5P_L2_0_LOWPWR,			{ 0x2, 0x2, 0x3 } },
	{ S5P_L2_1_LOWPWR,			{ 0x2, 0x2, 0x3 } },
	{ S5P_CMU_ACLKSTOP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_SCLKSTOP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_LOWPWR,			{ 0x1, 0x1, 0x0 } },
	{ S5P_APLL_SYSCLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_MPLL_SYSCLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_VPLL_SYSCLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_EPLL_SYSCLK_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_GPS_ALIVE_LOWPWR,	{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_GPSALIVE_LOWPWR,	{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_CAM_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_TV_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_MFC_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_G3D_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_LCD0_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_LCD1_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_MAUDIO_LOWPWR,	{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_CLKSTOP_GPS_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_CAM_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_TV_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_MFC_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_G3D_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_LCD0_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_LCD1_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_MAUDIO_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_GPS_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_TOP_BUS_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_TOP_RETENTION_LOWPWR,		{ 0x1, 0x0, 0x1 } },
	{ S5P_TOP_PWR_LOWPWR,			{ 0x3, 0x0, 0x3 } },
	{ S5P_LOGIC_RESET_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_ONENAND_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_MODIMIF_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_G2D_ACP_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_USBOTG_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_HSMMC_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_CSSYS_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_SECSS_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_PCIE_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_SATA_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_DRAM_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_MAUDIO_LOWPWR,	{ 0x1, 0x1, 0x0 } },
	{ S5P_PAD_RETENTION_GPIO_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_UART_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_MMCA_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_MMCB_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_EBIA_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_EBIB_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_ISOLATION_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_ALV_SEL_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_XUSBXTI_LOWPWR,			{ 0x1, 0x1, 0x0 } },
	{ S5P_XXTI_LOWPWR,			{ 0x1, 0x1, 0x0 } },
	{ S5P_EXT_REGULATOR_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_GPIO_MODE_LOWPWR,			{ 0x1, 0x0, 0x0 } },
	{ S5P_GPIO_MODE_MAUDIO_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CAM_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_TV_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_MFC_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_G3D_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_LCD0_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_LCD1_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_MAUDIO_LOWPWR,			{ 0x7, 0x7, 0x0 } },
	{ S5P_GPS_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_GPS_ALIVE_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ PMU_TABLE_END,},
};

static const struct exynos_pmu_conf exynos4x12_pmu_config[] = {
	{ S5P_ARM_CORE0_LOWPWR,			{ 0x0, 0x0, 0x2 } },
	{ S5P_DIS_IRQ_CORE0,			{ 0x0, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_CENTRAL0,			{ 0x0, 0x0, 0x0 } },
	{ S5P_ARM_CORE1_LOWPWR,			{ 0x0, 0x0, 0x2 } },
	{ S5P_DIS_IRQ_CORE1,			{ 0x0, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_CENTRAL1,			{ 0x0, 0x0, 0x0 } },
	{ S5P_ISP_ARM_LOWPWR,			{ 0x1, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_ISP_ARM_LOCAL_LOWPWR,	{ 0x0, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_ISP_ARM_CENTRAL_LOWPWR,	{ 0x0, 0x0, 0x0 } },
	{ S5P_ARM_COMMON_LOWPWR,		{ 0x0, 0x0, 0x2 } },
	{ S5P_L2_0_LOWPWR,			{ 0x0, 0x0, 0x3 } },
	/* XXX_OPTION register should be set other field */
	{ S5P_ARM_L2_0_OPTION,			{ 0x10, 0x10, 0x0 } },
	{ S5P_L2_1_LOWPWR,			{ 0x0, 0x0, 0x3 } },
	{ S5P_ARM_L2_1_OPTION,			{ 0x10, 0x10, 0x0 } },
	{ S5P_CMU_ACLKSTOP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_SCLKSTOP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_LOWPWR,			{ 0x1, 0x1, 0x0 } },
	{ S5P_DRAM_FREQ_DOWN_LOWPWR,		{ 0x1, 0x1, 0x1 } },
	{ S5P_DDRPHY_DLLOFF_LOWPWR,		{ 0x1, 0x1, 0x1 } },
	{ S5P_LPDDR_PHY_DLL_LOCK_LOWPWR,	{ 0x1, 0x1, 0x1 } },
	{ S5P_CMU_ACLKSTOP_COREBLK_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_SCLKSTOP_COREBLK_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_COREBLK_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_APLL_SYSCLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_MPLL_SYSCLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_VPLL_SYSCLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_EPLL_SYSCLK_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_MPLLUSER_SYSCLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_GPS_ALIVE_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_GPSALIVE_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_CAM_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_TV_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_MFC_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_G3D_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_LCD0_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_ISP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_MAUDIO_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_CLKSTOP_GPS_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_CAM_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_TV_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_MFC_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_G3D_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_LCD0_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_ISP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_RESET_MAUDIO_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_CMU_RESET_GPS_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_TOP_BUS_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_TOP_RETENTION_LOWPWR,		{ 0x1, 0x0, 0x1 } },
	{ S5P_TOP_PWR_LOWPWR,			{ 0x3, 0x0, 0x3 } },
	{ S5P_TOP_BUS_COREBLK_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_TOP_RETENTION_COREBLK_LOWPWR,	{ 0x1, 0x0, 0x1 } },
	{ S5P_TOP_PWR_COREBLK_LOWPWR,		{ 0x3, 0x0, 0x3 } },
	{ S5P_LOGIC_RESET_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_OSCCLK_GATE_LOWPWR,		{ 0x1, 0x0, 0x1 } },
	{ S5P_LOGIC_RESET_COREBLK_LOWPWR,	{ 0x1, 0x1, 0x0 } },
	{ S5P_OSCCLK_GATE_COREBLK_LOWPWR,	{ 0x1, 0x0, 0x1 } },
	{ S5P_ONENAND_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_ONENAND_MEM_OPTION,		{ 0x10, 0x10, 0x0 } },
	{ S5P_HSI_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_HSI_MEM_OPTION,			{ 0x10, 0x10, 0x0 } },
	{ S5P_G2D_ACP_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_G2D_ACP_MEM_OPTION,		{ 0x10, 0x10, 0x0 } },
	{ S5P_USBOTG_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_USBOTG_MEM_OPTION,		{ 0x10, 0x10, 0x0 } },
	{ S5P_HSMMC_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_HSMMC_MEM_OPTION,			{ 0x10, 0x10, 0x0 } },
	{ S5P_CSSYS_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_CSSYS_MEM_OPTION,			{ 0x10, 0x10, 0x0 } },
	{ S5P_SECSS_MEM_LOWPWR,			{ 0x3, 0x0, 0x0 } },
	{ S5P_SECSS_MEM_OPTION,			{ 0x10, 0x10, 0x0 } },
	{ S5P_ROTATOR_MEM_LOWPWR,		{ 0x3, 0x0, 0x0 } },
	{ S5P_ROTATOR_MEM_OPTION,		{ 0x10, 0x10, 0x0 } },
	{ S5P_PAD_RETENTION_DRAM_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_MAUDIO_LOWPWR,	{ 0x1, 0x1, 0x0 } },
	{ S5P_PAD_RETENTION_GPIO_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_UART_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_MMCA_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_MMCB_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_EBIA_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_EBIB_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_GPIO_COREBLK_LOWPWR,{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_ISOLATION_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_ISOLATION_COREBLK_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_PAD_RETENTION_ALV_SEL_LOWPWR,	{ 0x1, 0x0, 0x0 } },
	{ S5P_XUSBXTI_LOWPWR,			{ 0x1, 0x1, 0x0 } },
	{ S5P_XXTI_LOWPWR,			{ 0x1, 0x1, 0x0 } },
	{ S5P_EXT_REGULATOR_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_GPIO_MODE_LOWPWR,			{ 0x1, 0x0, 0x0 } },
	{ S5P_GPIO_MODE_COREBLK_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_GPIO_MODE_MAUDIO_LOWPWR,		{ 0x1, 0x1, 0x0 } },
	{ S5P_TOP_ASB_RESET_LOWPWR,		{ 0x1, 0x1, 0x1 } },
	{ S5P_TOP_ASB_ISOLATION_LOWPWR,		{ 0x1, 0x0, 0x1 } },
	{ S5P_CAM_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_TV_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_MFC_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_G3D_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_LCD0_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_ISP_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_MAUDIO_LOWPWR,			{ 0x7, 0x7, 0x0 } },
	{ S5P_GPS_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_GPS_ALIVE_LOWPWR,			{ 0x7, 0x0, 0x0 } },
	{ S5P_CMU_SYSCLK_ISP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ S5P_CMU_SYSCLK_GPS_LOWPWR,		{ 0x1, 0x0, 0x0 } },
	{ PMU_TABLE_END,},
};

static const struct exynos_pmu_conf exynos4412_pmu_config[] = {
	{ S5P_ARM_CORE2_LOWPWR,			{ 0x0, 0x0, 0x2 } },
	{ S5P_DIS_IRQ_CORE2,			{ 0x0, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_CENTRAL2,			{ 0x0, 0x0, 0x0 } },
	{ S5P_ARM_CORE3_LOWPWR,			{ 0x0, 0x0, 0x2 } },
	{ S5P_DIS_IRQ_CORE3,			{ 0x0, 0x0, 0x0 } },
	{ S5P_DIS_IRQ_CENTRAL3,			{ 0x0, 0x0, 0x0 } },
	{ PMU_TABLE_END,},
};

static const struct exynos_pmu_conf exynos5250_pmu_config[] = {
	/* { .offset = offset, .val = { AFTR, LPA, SLEEP } */
	{ EXYNOS5_ARM_CORE0_SYS_PWR_REG,		{ 0x0, 0x0, 0x2} },
	{ EXYNOS5_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG,	{ 0x0, 0x0, 0x0} },
	{ EXYNOS5_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG,	{ 0x0, 0x0, 0x0} },
	{ EXYNOS5_ARM_CORE1_SYS_PWR_REG,		{ 0x0, 0x0, 0x2} },
	{ EXYNOS5_DIS_IRQ_ARM_CORE1_LOCAL_SYS_PWR_REG,	{ 0x0, 0x0, 0x0} },
	{ EXYNOS5_DIS_IRQ_ARM_CORE1_CENTRAL_SYS_PWR_REG,	{ 0x0, 0x0, 0x0} },
	{ EXYNOS5_FSYS_ARM_SYS_PWR_REG,			{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_DIS_IRQ_FSYS_ARM_CENTRAL_SYS_PWR_REG,	{ 0x1, 0x1, 0x1} },
	{ EXYNOS5_ISP_ARM_SYS_PWR_REG,			{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_DIS_IRQ_ISP_ARM_LOCAL_SYS_PWR_REG,	{ 0x0, 0x0, 0x0} },
	{ EXYNOS5_DIS_IRQ_ISP_ARM_CENTRAL_SYS_PWR_REG,	{ 0x0, 0x0, 0x0} },
	{ EXYNOS5_ARM_COMMON_SYS_PWR_REG,		{ 0x0, 0x0, 0x2} },
	{ EXYNOS5_ARM_L2_SYS_PWR_REG,			{ 0x3, 0x3, 0x3} },
	{ EXYNOS5_ARM_L2_OPTION,			{ 0x10, 0x10, 0x0 } },
	{ EXYNOS5_CMU_ACLKSTOP_SYS_PWR_REG,		{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_CMU_SCLKSTOP_SYS_PWR_REG,		{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_CMU_RESET_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_CMU_ACLKSTOP_SYSMEM_SYS_PWR_REG,	{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_CMU_SCLKSTOP_SYSMEM_SYS_PWR_REG,	{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_CMU_RESET_SYSMEM_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_DRAM_FREQ_DOWN_SYS_PWR_REG,		{ 0x1, 0x1, 0x1} },
	{ EXYNOS5_DDRPHY_DLLOFF_SYS_PWR_REG,		{ 0x1, 0x1, 0x1} },
	{ EXYNOS5_DDRPHY_DLLLOCK_SYS_PWR_REG,		{ 0x1, 0x1, 0x1} },
	{ EXYNOS5_APLL_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_MPLL_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_VPLL_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_EPLL_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_BPLL_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CPLL_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_MPLLUSER_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_BPLLUSER_SYSCLK_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_TOP_BUS_SYS_PWR_REG,			{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_TOP_RETENTION_SYS_PWR_REG,		{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_TOP_PWR_SYS_PWR_REG,			{ 0x3, 0x0, 0x3} },
	{ EXYNOS5_TOP_BUS_SYSMEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_TOP_RETENTION_SYSMEM_SYS_PWR_REG,	{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_TOP_PWR_SYSMEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x3} },
	{ EXYNOS5_LOGIC_RESET_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_OSCCLK_GATE_SYS_PWR_REG,		{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_LOGIC_RESET_SYSMEM_SYS_PWR_REG,	{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_OSCCLK_GATE_SYSMEM_SYS_PWR_REG,	{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_USBOTG_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_G2D_MEM_SYS_PWR_REG,			{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_USBDRD_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_SDMMC_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_CSSYS_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_SECSS_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_ROTATOR_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_INTRAM_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_INTROM_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_JPEG_MEM_SYS_PWR_REG,			{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_JPEG_MEM_OPTION,			{ 0x10, 0x10, 0x0} },
	{ EXYNOS5_HSI_MEM_SYS_PWR_REG,			{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_MCUIOP_MEM_SYS_PWR_REG,		{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_SATA_MEM_SYS_PWR_REG,			{ 0x3, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_DRAM_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_MAU_SYS_PWR_REG,	{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_PAD_RETENTION_GPIO_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_UART_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_MMCA_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_MMCB_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_EBIA_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_EBIB_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_SPI_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_RETENTION_GPIO_SYSMEM_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_ISOLATION_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_ISOLATION_SYSMEM_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_PAD_ALV_SEL_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_XUSBXTI_SYS_PWR_REG,			{ 0x1, 0x1, 0x1} },
	{ EXYNOS5_XXTI_SYS_PWR_REG,			{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_EXT_REGULATOR_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_GPIO_MODE_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_GPIO_MODE_SYSMEM_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_GPIO_MODE_MAU_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_TOP_ASB_RESET_SYS_PWR_REG,		{ 0x1, 0x1, 0x1} },
	{ EXYNOS5_TOP_ASB_ISOLATION_SYS_PWR_REG,	{ 0x1, 0x0, 0x1} },
	{ EXYNOS5_GSCL_SYS_PWR_REG,			{ 0x7, 0x0, 0x0} },
	{ EXYNOS5_ISP_SYS_PWR_REG,			{ 0x7, 0x0, 0x0} },
	{ EXYNOS5_MFC_SYS_PWR_REG,			{ 0x7, 0x0, 0x0} },
	{ EXYNOS5_G3D_SYS_PWR_REG,			{ 0x7, 0x0, 0x0} },
	{ EXYNOS5_DISP1_SYS_PWR_REG,			{ 0x7, 0x0, 0x0} },
	{ EXYNOS5_MAU_SYS_PWR_REG,			{ 0x7, 0x7, 0x0} },
	{ EXYNOS5_CMU_CLKSTOP_GSCL_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_CLKSTOP_ISP_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_CLKSTOP_MFC_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_CLKSTOP_G3D_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_CLKSTOP_DISP1_SYS_PWR_REG,	{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_CLKSTOP_MAU_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_CMU_SYSCLK_GSCL_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_SYSCLK_ISP_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_SYSCLK_MFC_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_SYSCLK_G3D_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_SYSCLK_DISP1_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_SYSCLK_MAU_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ EXYNOS5_CMU_RESET_GSCL_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_RESET_ISP_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_RESET_MFC_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_RESET_G3D_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_RESET_DISP1_SYS_PWR_REG,		{ 0x1, 0x0, 0x0} },
	{ EXYNOS5_CMU_RESET_MAU_SYS_PWR_REG,		{ 0x1, 0x1, 0x0} },
	{ PMU_TABLE_END,},
};

static unsigned int const exynos5_list_both_cnt_feed[] = {
	EXYNOS5_ARM_CORE0_OPTION,
	EXYNOS5_ARM_CORE1_OPTION,
	EXYNOS5_ARM_COMMON_OPTION,
	EXYNOS5_GSCL_OPTION,
	EXYNOS5_ISP_OPTION,
	EXYNOS5_MFC_OPTION,
	EXYNOS5_G3D_OPTION,
	EXYNOS5_DISP1_OPTION,
	EXYNOS5_MAU_OPTION,
	EXYNOS5_TOP_PWR_OPTION,
	EXYNOS5_TOP_PWR_SYSMEM_OPTION,
};

static unsigned int const exynos5_list_disable_wfi_wfe[] = {
	EXYNOS5_ARM_CORE1_OPTION,
	EXYNOS5_FSYS_ARM_OPTION,
	EXYNOS5_ISP_ARM_OPTION,
};

static void exynos5_powerdown_conf(enum sys_powerdown mode)
{
	unsigned int i;
	unsigned int tmp;

	/*
	 * Enable both SC_FEEDBACK and SC_COUNTER
	 */
	for (i = 0; i < ARRAY_SIZE(exynos5_list_both_cnt_feed); i++) {
		tmp = pmu_raw_readl(exynos5_list_both_cnt_feed[i]);
		tmp |= (EXYNOS5_USE_SC_FEEDBACK |
			EXYNOS5_USE_SC_COUNTER);
		pmu_raw_writel(tmp, exynos5_list_both_cnt_feed[i]);
	}

	/*
	 * SKIP_DEACTIVATE_ACEACP_IN_PWDN_BITFIELD Enable
	 */
	tmp = pmu_raw_readl(EXYNOS5_ARM_COMMON_OPTION);
	tmp |= EXYNOS5_SKIP_DEACTIVATE_ACEACP_IN_PWDN;
	pmu_raw_writel(tmp, EXYNOS5_ARM_COMMON_OPTION);

	/*
	 * Disable WFI/WFE on XXX_OPTION
	 */
	for (i = 0; i < ARRAY_SIZE(exynos5_list_disable_wfi_wfe); i++) {
		tmp = pmu_raw_readl(exynos5_list_disable_wfi_wfe[i]);
		tmp &= ~(EXYNOS5_OPTION_USE_STANDBYWFE |
			 EXYNOS5_OPTION_USE_STANDBYWFI);
		pmu_raw_writel(tmp, exynos5_list_disable_wfi_wfe[i]);
	}
}

void exynos_sys_powerdown_conf(enum sys_powerdown mode)
{
	unsigned int i;

	const struct exynos_pmu_data *pmu_data = pmu_context->pmu_data;

	if (pmu_data->powerdown_conf)
		pmu_data->powerdown_conf(mode);

	if (pmu_data->pmu_config) {
		for (i = 0; (pmu_data->pmu_config[i].offset != PMU_TABLE_END); i++)
			pmu_raw_writel(pmu_data->pmu_config[i].val[mode],
					pmu_data->pmu_config[i].offset);
	}

	if (pmu_data->pmu_config_extra) {
		for (i = 0; pmu_data->pmu_config_extra[i].offset != PMU_TABLE_END; i++)
			pmu_raw_writel(pmu_data->pmu_config_extra[i].val[mode],
					pmu_data->pmu_config_extra[i].offset);
	}
}

static void exynos5250_pmu_init(void)
{
	unsigned int value;
	/*
	 * When SYS_WDTRESET is set, watchdog timer reset request
	 * is ignored by power management unit.
	 */
	value = pmu_raw_readl(EXYNOS5_AUTO_WDTRESET_DISABLE);
	value &= ~EXYNOS5_SYS_WDTRESET;
	pmu_raw_writel(value, EXYNOS5_AUTO_WDTRESET_DISABLE);

	value = pmu_raw_readl(EXYNOS5_MASK_WDTRESET_REQUEST);
	value &= ~EXYNOS5_SYS_WDTRESET;
	pmu_raw_writel(value, EXYNOS5_MASK_WDTRESET_REQUEST);
}

static const struct exynos_pmu_data exynos4210_pmu_data = {
	.pmu_config	= exynos4210_pmu_config,
};

static const struct exynos_pmu_data exynos4212_pmu_data = {
	.pmu_config	= exynos4x12_pmu_config,
};

static const struct exynos_pmu_data exynos4412_pmu_data = {
	.pmu_config		= exynos4x12_pmu_config,
	.pmu_config_extra	= exynos4412_pmu_config,
};

static const struct exynos_pmu_data exynos5250_pmu_data = {
	.pmu_config	= exynos5250_pmu_config,
	.pmu_init	= exynos5250_pmu_init,
	.powerdown_conf	= exynos5_powerdown_conf,
};

/*
 * PMU platform driver and devicetree bindings.
 */
static const struct of_device_id exynos_pmu_of_device_ids[] = {
	{
		.compatible = "samsung,exynos4210-pmu",
		.data = &exynos4210_pmu_data,
	}, {
		.compatible = "samsung,exynos4212-pmu",
		.data = &exynos4212_pmu_data,
	}, {
		.compatible = "samsung,exynos4412-pmu",
		.data = &exynos4412_pmu_data,
	}, {
		.compatible = "samsung,exynos5250-pmu",
		.data = &exynos5250_pmu_data,
	},
	{ /*sentinel*/ },
};

static int exynos_pmu_probe(struct platform_device *pdev)
{
	const struct of_device_id *match;
	struct device *dev = &pdev->dev;
	struct resource *res;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	pmu_base_addr = devm_ioremap_resource(dev, res);
	if (IS_ERR(pmu_base_addr))
		return PTR_ERR(pmu_base_addr);

	pmu_context = devm_kzalloc(&pdev->dev,
			sizeof(struct exynos_pmu_context),
			GFP_KERNEL);
	if (!pmu_context) {
		dev_err(dev, "Cannot allocate memory.\n");
		return -ENOMEM;
	}
	pmu_context->dev = dev;

	match = of_match_node(exynos_pmu_of_device_ids, dev->of_node);

	pmu_context->pmu_data = match->data;

	if (pmu_context->pmu_data->pmu_init)
		pmu_context->pmu_data->pmu_init();

	platform_set_drvdata(pdev, pmu_context);

	dev_dbg(dev, "Exynos PMU Driver probe done\n");
	return 0;
}

static struct platform_driver exynos_pmu_driver = {
	.driver  = {
		.name   = "exynos-pmu",
		.owner	= THIS_MODULE,
		.of_match_table = exynos_pmu_of_device_ids,
	},
	.probe = exynos_pmu_probe,
};

static int __init exynos_pmu_init(void)
{
	return platform_driver_register(&exynos_pmu_driver);

}
postcore_initcall(exynos_pmu_init);