/*
 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
 * Author: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
 *
 * Based on clock drivers for S3C64xx and Exynos4 SoCs.
 *
 * 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.
 *
 * Common Clock Framework support for all S5PC110/S5PV210 SoCs.
 */

#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/syscore_ops.h>

#include "clk.h"
#include "clk-pll.h"

#include <dt-bindings/clock/s5pv210.h>

/* S5PC110/S5PV210 clock controller register offsets */
#define APLL_LOCK		0x0000
#define MPLL_LOCK		0x0008
#define EPLL_LOCK		0x0010
#define VPLL_LOCK		0x0020
#define APLL_CON0		0x0100
#define APLL_CON1		0x0104
#define MPLL_CON		0x0108
#define EPLL_CON0		0x0110
#define EPLL_CON1		0x0114
#define VPLL_CON		0x0120
#define CLK_SRC0		0x0200
#define CLK_SRC1		0x0204
#define CLK_SRC2		0x0208
#define CLK_SRC3		0x020c
#define CLK_SRC4		0x0210
#define CLK_SRC5		0x0214
#define CLK_SRC6		0x0218
#define CLK_SRC_MASK0		0x0280
#define CLK_SRC_MASK1		0x0284
#define CLK_DIV0		0x0300
#define CLK_DIV1		0x0304
#define CLK_DIV2		0x0308
#define CLK_DIV3		0x030c
#define CLK_DIV4		0x0310
#define CLK_DIV5		0x0314
#define CLK_DIV6		0x0318
#define CLK_DIV7		0x031c
#define CLK_GATE_MAIN0		0x0400
#define CLK_GATE_MAIN1		0x0404
#define CLK_GATE_MAIN2		0x0408
#define CLK_GATE_PERI0		0x0420
#define CLK_GATE_PERI1		0x0424
#define CLK_GATE_SCLK0		0x0440
#define CLK_GATE_SCLK1		0x0444
#define CLK_GATE_IP0		0x0460
#define CLK_GATE_IP1		0x0464
#define CLK_GATE_IP2		0x0468
#define CLK_GATE_IP3		0x046c
#define CLK_GATE_IP4		0x0470
#define CLK_GATE_BLOCK		0x0480
#define CLK_GATE_IP5		0x0484
#define CLK_OUT			0x0500
#define MISC			0xe000
#define OM_STAT			0xe100

/* IDs of PLLs available on S5PV210/S5P6442 SoCs */
enum {
	apll,
	mpll,
	epll,
	vpll,
};

/* IDs of external clocks (used for legacy boards) */
enum {
	xxti,
	xusbxti,
};

static void __iomem *reg_base;

#ifdef CONFIG_PM_SLEEP
static struct samsung_clk_reg_dump *s5pv210_clk_dump;

/* List of registers that need to be preserved across suspend/resume. */
static unsigned long s5pv210_clk_regs[] __initdata = {
	CLK_SRC0,
	CLK_SRC1,
	CLK_SRC2,
	CLK_SRC3,
	CLK_SRC4,
	CLK_SRC5,
	CLK_SRC6,
	CLK_SRC_MASK0,
	CLK_SRC_MASK1,
	CLK_DIV0,
	CLK_DIV1,
	CLK_DIV2,
	CLK_DIV3,
	CLK_DIV4,
	CLK_DIV5,
	CLK_DIV6,
	CLK_DIV7,
	CLK_GATE_MAIN0,
	CLK_GATE_MAIN1,
	CLK_GATE_MAIN2,
	CLK_GATE_PERI0,
	CLK_GATE_PERI1,
	CLK_GATE_SCLK0,
	CLK_GATE_SCLK1,
	CLK_GATE_IP0,
	CLK_GATE_IP1,
	CLK_GATE_IP2,
	CLK_GATE_IP3,
	CLK_GATE_IP4,
	CLK_GATE_IP5,
	CLK_GATE_BLOCK,
	APLL_LOCK,
	MPLL_LOCK,
	EPLL_LOCK,
	VPLL_LOCK,
	APLL_CON0,
	APLL_CON1,
	MPLL_CON,
	EPLL_CON0,
	EPLL_CON1,
	VPLL_CON,
	CLK_OUT,
};

static int s5pv210_clk_suspend(void)
{
	samsung_clk_save(reg_base, s5pv210_clk_dump,
				ARRAY_SIZE(s5pv210_clk_regs));
	return 0;
}

static void s5pv210_clk_resume(void)
{
	samsung_clk_restore(reg_base, s5pv210_clk_dump,
				ARRAY_SIZE(s5pv210_clk_regs));
}

static struct syscore_ops s5pv210_clk_syscore_ops = {
	.suspend = s5pv210_clk_suspend,
	.resume = s5pv210_clk_resume,
};

static void s5pv210_clk_sleep_init(void)
{
	s5pv210_clk_dump =
		samsung_clk_alloc_reg_dump(s5pv210_clk_regs,
					   ARRAY_SIZE(s5pv210_clk_regs));
	if (!s5pv210_clk_dump) {
		pr_warn("%s: Failed to allocate sleep save data\n", __func__);
		return;
	}

	register_syscore_ops(&s5pv210_clk_syscore_ops);
}
#else
static inline void s5pv210_clk_sleep_init(void) { }
#endif

/* Mux parent lists. */
static const char *const fin_pll_p[] __initconst = {
	"xxti",
	"xusbxti"
};

static const char *const mout_apll_p[] __initconst = {
	"fin_pll",
	"fout_apll"
};

static const char *const mout_mpll_p[] __initconst = {
	"fin_pll",
	"fout_mpll"
};

static const char *const mout_epll_p[] __initconst = {
	"fin_pll",
	"fout_epll"
};

static const char *const mout_vpllsrc_p[] __initconst = {
	"fin_pll",
	"sclk_hdmi27m"
};

static const char *const mout_vpll_p[] __initconst = {
	"mout_vpllsrc",
	"fout_vpll"
};

static const char *const mout_group1_p[] __initconst = {
	"dout_a2m",
	"mout_mpll",
	"mout_epll",
	"mout_vpll"
};

static const char *const mout_group2_p[] __initconst = {
	"xxti",
	"xusbxti",
	"sclk_hdmi27m",
	"sclk_usbphy0",
	"sclk_usbphy1",
	"sclk_hdmiphy",
	"mout_mpll",
	"mout_epll",
	"mout_vpll",
};

static const char *const mout_audio0_p[] __initconst = {
	"xxti",
	"pcmcdclk0",
	"sclk_hdmi27m",
	"sclk_usbphy0",
	"sclk_usbphy1",
	"sclk_hdmiphy",
	"mout_mpll",
	"mout_epll",
	"mout_vpll",
};

static const char *const mout_audio1_p[] __initconst = {
	"i2scdclk1",
	"pcmcdclk1",
	"sclk_hdmi27m",
	"sclk_usbphy0",
	"sclk_usbphy1",
	"sclk_hdmiphy",
	"mout_mpll",
	"mout_epll",
	"mout_vpll",
};

static const char *const mout_audio2_p[] __initconst = {
	"i2scdclk2",
	"pcmcdclk2",
	"sclk_hdmi27m",
	"sclk_usbphy0",
	"sclk_usbphy1",
	"sclk_hdmiphy",
	"mout_mpll",
	"mout_epll",
	"mout_vpll",
};

static const char *const mout_spdif_p[] __initconst = {
	"dout_audio0",
	"dout_audio1",
	"dout_audio3",
};

static const char *const mout_group3_p[] __initconst = {
	"mout_apll",
	"mout_mpll"
};

static const char *const mout_group4_p[] __initconst = {
	"mout_mpll",
	"dout_a2m"
};

static const char *const mout_flash_p[] __initconst = {
	"dout_hclkd",
	"dout_hclkp"
};

static const char *const mout_dac_p[] __initconst = {
	"mout_vpll",
	"sclk_hdmiphy"
};

static const char *const mout_hdmi_p[] __initconst = {
	"sclk_hdmiphy",
	"dout_tblk"
};

static const char *const mout_mixer_p[] __initconst = {
	"mout_dac",
	"mout_hdmi"
};

static const char *const mout_vpll_6442_p[] __initconst = {
	"fin_pll",
	"fout_vpll"
};

static const char *const mout_mixer_6442_p[] __initconst = {
	"mout_vpll",
	"dout_mixer"
};

static const char *const mout_d0sync_6442_p[] __initconst = {
	"mout_dsys",
	"div_apll"
};

static const char *const mout_d1sync_6442_p[] __initconst = {
	"mout_psys",
	"div_apll"
};

static const char *const mout_group2_6442_p[] __initconst = {
	"fin_pll",
	"none",
	"none",
	"sclk_usbphy0",
	"none",
	"none",
	"mout_mpll",
	"mout_epll",
	"mout_vpll",
};

static const char *const mout_audio0_6442_p[] __initconst = {
	"fin_pll",
	"pcmcdclk0",
	"none",
	"sclk_usbphy0",
	"none",
	"none",
	"mout_mpll",
	"mout_epll",
	"mout_vpll",
};

static const char *const mout_audio1_6442_p[] __initconst = {
	"i2scdclk1",
	"pcmcdclk1",
	"none",
	"sclk_usbphy0",
	"none",
	"none",
	"mout_mpll",
	"mout_epll",
	"mout_vpll",
	"fin_pll",
};

static const char *const mout_clksel_p[] __initconst = {
	"fout_apll_clkout",
	"fout_mpll_clkout",
	"fout_epll",
	"fout_vpll",
	"sclk_usbphy0",
	"sclk_usbphy1",
	"sclk_hdmiphy",
	"rtc",
	"rtc_tick",
	"dout_hclkm",
	"dout_pclkm",
	"dout_hclkd",
	"dout_pclkd",
	"dout_hclkp",
	"dout_pclkp",
	"dout_apll_clkout",
	"dout_hpm",
	"xxti",
	"xusbxti",
	"div_dclk"
};

static const char *const mout_clksel_6442_p[] __initconst = {
	"fout_apll_clkout",
	"fout_mpll_clkout",
	"fout_epll",
	"fout_vpll",
	"sclk_usbphy0",
	"none",
	"none",
	"rtc",
	"rtc_tick",
	"none",
	"none",
	"dout_hclkd",
	"dout_pclkd",
	"dout_hclkp",
	"dout_pclkp",
	"dout_apll_clkout",
	"none",
	"fin_pll",
	"none",
	"div_dclk"
};

static const char *const mout_clkout_p[] __initconst = {
	"dout_clkout",
	"none",
	"xxti",
	"xusbxti"
};

/* Common fixed factor clocks. */
static const struct samsung_fixed_factor_clock ffactor_clks[] __initconst = {
	FFACTOR(FOUT_APLL_CLKOUT, "fout_apll_clkout", "fout_apll", 1, 4, 0),
	FFACTOR(FOUT_MPLL_CLKOUT, "fout_mpll_clkout", "fout_mpll", 1, 2, 0),
	FFACTOR(DOUT_APLL_CLKOUT, "dout_apll_clkout", "dout_apll", 1, 4, 0),
};

/* PLL input mux (fin_pll), which needs to be registered before PLLs. */
static const struct samsung_mux_clock early_mux_clks[] __initconst = {
	MUX_F(FIN_PLL, "fin_pll", fin_pll_p, OM_STAT, 0, 1,
					CLK_MUX_READ_ONLY, 0),
};

/* Common clock muxes. */
static const struct samsung_mux_clock mux_clks[] __initconst = {
	MUX(MOUT_FLASH, "mout_flash", mout_flash_p, CLK_SRC0, 28, 1),
	MUX(MOUT_PSYS, "mout_psys", mout_group4_p, CLK_SRC0, 24, 1),
	MUX(MOUT_DSYS, "mout_dsys", mout_group4_p, CLK_SRC0, 20, 1),
	MUX(MOUT_MSYS, "mout_msys", mout_group3_p, CLK_SRC0, 16, 1),
	MUX(MOUT_EPLL, "mout_epll", mout_epll_p, CLK_SRC0, 8, 1),
	MUX(MOUT_MPLL, "mout_mpll", mout_mpll_p, CLK_SRC0, 4, 1),
	MUX(MOUT_APLL, "mout_apll", mout_apll_p, CLK_SRC0, 0, 1),

	MUX(MOUT_CLKOUT, "mout_clkout", mout_clkout_p, MISC, 8, 2),
};

/* S5PV210-specific clock muxes. */
static const struct samsung_mux_clock s5pv210_mux_clks[] __initconst = {
	MUX(MOUT_VPLL, "mout_vpll", mout_vpll_p, CLK_SRC0, 12, 1),

	MUX(MOUT_VPLLSRC, "mout_vpllsrc", mout_vpllsrc_p, CLK_SRC1, 28, 1),
	MUX(MOUT_CSIS, "mout_csis", mout_group2_p, CLK_SRC1, 24, 4),
	MUX(MOUT_FIMD, "mout_fimd", mout_group2_p, CLK_SRC1, 20, 4),
	MUX(MOUT_CAM1, "mout_cam1", mout_group2_p, CLK_SRC1, 16, 4),
	MUX(MOUT_CAM0, "mout_cam0", mout_group2_p, CLK_SRC1, 12, 4),
	MUX(MOUT_DAC, "mout_dac", mout_dac_p, CLK_SRC1, 8, 1),
	MUX(MOUT_MIXER, "mout_mixer", mout_mixer_p, CLK_SRC1, 4, 1),
	MUX(MOUT_HDMI, "mout_hdmi", mout_hdmi_p, CLK_SRC1, 0, 1),

	MUX(MOUT_G2D, "mout_g2d", mout_group1_p, CLK_SRC2, 8, 2),
	MUX(MOUT_MFC, "mout_mfc", mout_group1_p, CLK_SRC2, 4, 2),
	MUX(MOUT_G3D, "mout_g3d", mout_group1_p, CLK_SRC2, 0, 2),

	MUX(MOUT_FIMC2, "mout_fimc2", mout_group2_p, CLK_SRC3, 20, 4),
	MUX(MOUT_FIMC1, "mout_fimc1", mout_group2_p, CLK_SRC3, 16, 4),
	MUX(MOUT_FIMC0, "mout_fimc0", mout_group2_p, CLK_SRC3, 12, 4),

	MUX(MOUT_UART3, "mout_uart3", mout_group2_p, CLK_SRC4, 28, 4),
	MUX(MOUT_UART2, "mout_uart2", mout_group2_p, CLK_SRC4, 24, 4),
	MUX(MOUT_UART1, "mout_uart1", mout_group2_p, CLK_SRC4, 20, 4),
	MUX(MOUT_UART0, "mout_uart0", mout_group2_p, CLK_SRC4, 16, 4),
	MUX(MOUT_MMC3, "mout_mmc3", mout_group2_p, CLK_SRC4, 12, 4),
	MUX(MOUT_MMC2, "mout_mmc2", mout_group2_p, CLK_SRC4, 8, 4),
	MUX(MOUT_MMC1, "mout_mmc1", mout_group2_p, CLK_SRC4, 4, 4),
	MUX(MOUT_MMC0, "mout_mmc0", mout_group2_p, CLK_SRC4, 0, 4),

	MUX(MOUT_PWM, "mout_pwm", mout_group2_p, CLK_SRC5, 12, 4),
	MUX(MOUT_SPI1, "mout_spi1", mout_group2_p, CLK_SRC5, 4, 4),
	MUX(MOUT_SPI0, "mout_spi0", mout_group2_p, CLK_SRC5, 0, 4),

	MUX(MOUT_DMC0, "mout_dmc0", mout_group1_p, CLK_SRC6, 24, 2),
	MUX(MOUT_PWI, "mout_pwi", mout_group2_p, CLK_SRC6, 20, 4),
	MUX(MOUT_HPM, "mout_hpm", mout_group3_p, CLK_SRC6, 16, 1),
	MUX(MOUT_SPDIF, "mout_spdif", mout_spdif_p, CLK_SRC6, 12, 2),
	MUX(MOUT_AUDIO2, "mout_audio2", mout_audio2_p, CLK_SRC6, 8, 4),
	MUX(MOUT_AUDIO1, "mout_audio1", mout_audio1_p, CLK_SRC6, 4, 4),
	MUX(MOUT_AUDIO0, "mout_audio0", mout_audio0_p, CLK_SRC6, 0, 4),

	MUX(MOUT_CLKSEL, "mout_clksel", mout_clksel_p, CLK_OUT, 12, 5),
};

/* S5P6442-specific clock muxes. */
static const struct samsung_mux_clock s5p6442_mux_clks[] __initconst = {
	MUX(MOUT_VPLL, "mout_vpll", mout_vpll_6442_p, CLK_SRC0, 12, 1),

	MUX(MOUT_FIMD, "mout_fimd", mout_group2_6442_p, CLK_SRC1, 20, 4),
	MUX(MOUT_CAM1, "mout_cam1", mout_group2_6442_p, CLK_SRC1, 16, 4),
	MUX(MOUT_CAM0, "mout_cam0", mout_group2_6442_p, CLK_SRC1, 12, 4),
	MUX(MOUT_MIXER, "mout_mixer", mout_mixer_6442_p, CLK_SRC1, 4, 1),

	MUX(MOUT_D0SYNC, "mout_d0sync", mout_d0sync_6442_p, CLK_SRC2, 28, 1),
	MUX(MOUT_D1SYNC, "mout_d1sync", mout_d1sync_6442_p, CLK_SRC2, 24, 1),

	MUX(MOUT_FIMC2, "mout_fimc2", mout_group2_6442_p, CLK_SRC3, 20, 4),
	MUX(MOUT_FIMC1, "mout_fimc1", mout_group2_6442_p, CLK_SRC3, 16, 4),
	MUX(MOUT_FIMC0, "mout_fimc0", mout_group2_6442_p, CLK_SRC3, 12, 4),

	MUX(MOUT_UART2, "mout_uart2", mout_group2_6442_p, CLK_SRC4, 24, 4),
	MUX(MOUT_UART1, "mout_uart1", mout_group2_6442_p, CLK_SRC4, 20, 4),
	MUX(MOUT_UART0, "mout_uart0", mout_group2_6442_p, CLK_SRC4, 16, 4),
	MUX(MOUT_MMC2, "mout_mmc2", mout_group2_6442_p, CLK_SRC4, 8, 4),
	MUX(MOUT_MMC1, "mout_mmc1", mout_group2_6442_p, CLK_SRC4, 4, 4),
	MUX(MOUT_MMC0, "mout_mmc0", mout_group2_6442_p, CLK_SRC4, 0, 4),

	MUX(MOUT_PWM, "mout_pwm", mout_group2_6442_p, CLK_SRC5, 12, 4),
	MUX(MOUT_SPI0, "mout_spi0", mout_group2_6442_p, CLK_SRC5, 0, 4),

	MUX(MOUT_AUDIO1, "mout_audio1", mout_audio1_6442_p, CLK_SRC6, 4, 4),
	MUX(MOUT_AUDIO0, "mout_audio0", mout_audio0_6442_p, CLK_SRC6, 0, 4),

	MUX(MOUT_CLKSEL, "mout_clksel", mout_clksel_6442_p, CLK_OUT, 12, 5),
};

/* S5PV210-specific fixed rate clocks generated inside the SoC. */
static const struct samsung_fixed_rate_clock s5pv210_frate_clks[] __initconst = {
	FRATE(SCLK_HDMI27M, "sclk_hdmi27m", NULL, 0, 27000000),
	FRATE(SCLK_HDMIPHY, "sclk_hdmiphy", NULL, 0, 27000000),
	FRATE(SCLK_USBPHY0, "sclk_usbphy0", NULL, 0, 48000000),
	FRATE(SCLK_USBPHY1, "sclk_usbphy1", NULL, 0, 48000000),
};

/* S5P6442-specific fixed rate clocks generated inside the SoC. */
static const struct samsung_fixed_rate_clock s5p6442_frate_clks[] __initconst = {
	FRATE(SCLK_USBPHY0, "sclk_usbphy0", NULL, 0, 30000000),
};

/* Common clock dividers. */
static const struct samsung_div_clock div_clks[] __initconst = {
	DIV(DOUT_PCLKP, "dout_pclkp", "dout_hclkp", CLK_DIV0, 28, 3),
	DIV(DOUT_PCLKD, "dout_pclkd", "dout_hclkd", CLK_DIV0, 20, 3),
	DIV(DOUT_A2M, "dout_a2m", "mout_apll", CLK_DIV0, 4, 3),
	DIV(DOUT_APLL, "dout_apll", "mout_msys", CLK_DIV0, 0, 3),

	DIV(DOUT_FIMD, "dout_fimd", "mout_fimd", CLK_DIV1, 20, 4),
	DIV(DOUT_CAM1, "dout_cam1", "mout_cam1", CLK_DIV1, 16, 4),
	DIV(DOUT_CAM0, "dout_cam0", "mout_cam0", CLK_DIV1, 12, 4),

	DIV(DOUT_FIMC2, "dout_fimc2", "mout_fimc2", CLK_DIV3, 20, 4),
	DIV(DOUT_FIMC1, "dout_fimc1", "mout_fimc1", CLK_DIV3, 16, 4),
	DIV(DOUT_FIMC0, "dout_fimc0", "mout_fimc0", CLK_DIV3, 12, 4),

	DIV(DOUT_UART2, "dout_uart2", "mout_uart2", CLK_DIV4, 24, 4),
	DIV(DOUT_UART1, "dout_uart1", "mout_uart1", CLK_DIV4, 20, 4),
	DIV(DOUT_UART0, "dout_uart0", "mout_uart0", CLK_DIV4, 16, 4),
	DIV(DOUT_MMC2, "dout_mmc2", "mout_mmc2", CLK_DIV4, 8, 4),
	DIV(DOUT_MMC1, "dout_mmc1", "mout_mmc1", CLK_DIV4, 4, 4),
	DIV(DOUT_MMC0, "dout_mmc0", "mout_mmc0", CLK_DIV4, 0, 4),

	DIV(DOUT_PWM, "dout_pwm", "mout_pwm", CLK_DIV5, 12, 4),
	DIV(DOUT_SPI0, "dout_spi0", "mout_spi0", CLK_DIV5, 0, 4),

	DIV(DOUT_FLASH, "dout_flash", "mout_flash", CLK_DIV6, 12, 3),
	DIV(DOUT_AUDIO1, "dout_audio1", "mout_audio1", CLK_DIV6, 4, 4),
	DIV(DOUT_AUDIO0, "dout_audio0", "mout_audio0", CLK_DIV6, 0, 4),

	DIV(DOUT_CLKOUT, "dout_clkout", "mout_clksel", CLK_OUT, 20, 4),
};

/* S5PV210-specific clock dividers. */
static const struct samsung_div_clock s5pv210_div_clks[] __initconst = {
	DIV(DOUT_HCLKP, "dout_hclkp", "mout_psys", CLK_DIV0, 24, 4),
	DIV(DOUT_HCLKD, "dout_hclkd", "mout_dsys", CLK_DIV0, 16, 4),
	DIV(DOUT_PCLKM, "dout_pclkm", "dout_hclkm", CLK_DIV0, 12, 3),
	DIV(DOUT_HCLKM, "dout_hclkm", "dout_apll", CLK_DIV0, 8, 3),

	DIV(DOUT_CSIS, "dout_csis", "mout_csis", CLK_DIV1, 28, 4),
	DIV(DOUT_TBLK, "dout_tblk", "mout_vpll", CLK_DIV1, 0, 4),

	DIV(DOUT_G2D, "dout_g2d", "mout_g2d", CLK_DIV2, 8, 4),
	DIV(DOUT_MFC, "dout_mfc", "mout_mfc", CLK_DIV2, 4, 4),
	DIV(DOUT_G3D, "dout_g3d", "mout_g3d", CLK_DIV2, 0, 4),

	DIV(DOUT_UART3, "dout_uart3", "mout_uart3", CLK_DIV4, 28, 4),
	DIV(DOUT_MMC3, "dout_mmc3", "mout_mmc3", CLK_DIV4, 12, 4),

	DIV(DOUT_SPI1, "dout_spi1", "mout_spi1", CLK_DIV5, 4, 4),

	DIV(DOUT_DMC0, "dout_dmc0", "mout_dmc0", CLK_DIV6, 28, 4),
	DIV(DOUT_PWI, "dout_pwi", "mout_pwi", CLK_DIV6, 24, 4),
	DIV(DOUT_HPM, "dout_hpm", "dout_copy", CLK_DIV6, 20, 3),
	DIV(DOUT_COPY, "dout_copy", "mout_hpm", CLK_DIV6, 16, 3),
	DIV(DOUT_AUDIO2, "dout_audio2", "mout_audio2", CLK_DIV6, 8, 4),

	DIV(DOUT_DPM, "dout_dpm", "dout_pclkp", CLK_DIV7, 8, 7),
	DIV(DOUT_DVSEM, "dout_dvsem", "dout_pclkp", CLK_DIV7, 0, 7),
};

/* S5P6442-specific clock dividers. */
static const struct samsung_div_clock s5p6442_div_clks[] __initconst = {
	DIV(DOUT_HCLKP, "dout_hclkp", "mout_d1sync", CLK_DIV0, 24, 4),
	DIV(DOUT_HCLKD, "dout_hclkd", "mout_d0sync", CLK_DIV0, 16, 4),

	DIV(DOUT_MIXER, "dout_mixer", "mout_vpll", CLK_DIV1, 0, 4),
};

/* Common clock gates. */
static const struct samsung_gate_clock gate_clks[] __initconst = {
	GATE(CLK_ROTATOR, "rotator", "dout_hclkd", CLK_GATE_IP0, 29, 0, 0),
	GATE(CLK_FIMC2, "fimc2", "dout_hclkd", CLK_GATE_IP0, 26, 0, 0),
	GATE(CLK_FIMC1, "fimc1", "dout_hclkd", CLK_GATE_IP0, 25, 0, 0),
	GATE(CLK_FIMC0, "fimc0", "dout_hclkd", CLK_GATE_IP0, 24, 0, 0),
	GATE(CLK_PDMA0, "pdma0", "dout_hclkp", CLK_GATE_IP0, 3, 0, 0),
	GATE(CLK_MDMA, "mdma", "dout_hclkd", CLK_GATE_IP0, 2, 0, 0),

	GATE(CLK_SROMC, "sromc", "dout_hclkp", CLK_GATE_IP1, 26, 0, 0),
	GATE(CLK_NANDXL, "nandxl", "dout_hclkp", CLK_GATE_IP1, 24, 0, 0),
	GATE(CLK_USB_OTG, "usb_otg", "dout_hclkp", CLK_GATE_IP1, 16, 0, 0),
	GATE(CLK_TVENC, "tvenc", "dout_hclkd", CLK_GATE_IP1, 10, 0, 0),
	GATE(CLK_MIXER, "mixer", "dout_hclkd", CLK_GATE_IP1, 9, 0, 0),
	GATE(CLK_VP, "vp", "dout_hclkd", CLK_GATE_IP1, 8, 0, 0),
	GATE(CLK_FIMD, "fimd", "dout_hclkd", CLK_GATE_IP1, 0, 0, 0),

	GATE(CLK_HSMMC2, "hsmmc2", "dout_hclkp", CLK_GATE_IP2, 18, 0, 0),
	GATE(CLK_HSMMC1, "hsmmc1", "dout_hclkp", CLK_GATE_IP2, 17, 0, 0),
	GATE(CLK_HSMMC0, "hsmmc0", "dout_hclkp", CLK_GATE_IP2, 16, 0, 0),
	GATE(CLK_MODEMIF, "modemif", "dout_hclkp", CLK_GATE_IP2, 9, 0, 0),
	GATE(CLK_SECSS, "secss", "dout_hclkp", CLK_GATE_IP2, 0, 0, 0),

	GATE(CLK_PCM1, "pcm1", "dout_pclkp", CLK_GATE_IP3, 29, 0, 0),
	GATE(CLK_PCM0, "pcm0", "dout_pclkp", CLK_GATE_IP3, 28, 0, 0),
	GATE(CLK_TSADC, "tsadc", "dout_pclkp", CLK_GATE_IP3, 24, 0, 0),
	GATE(CLK_PWM, "pwm", "dout_pclkp", CLK_GATE_IP3, 23, 0, 0),
	GATE(CLK_WDT, "watchdog", "dout_pclkp", CLK_GATE_IP3, 22, 0, 0),
	GATE(CLK_KEYIF, "keyif", "dout_pclkp", CLK_GATE_IP3, 21, 0, 0),
	GATE(CLK_UART2, "uart2", "dout_pclkp", CLK_GATE_IP3, 19, 0, 0),
	GATE(CLK_UART1, "uart1", "dout_pclkp", CLK_GATE_IP3, 18, 0, 0),
	GATE(CLK_UART0, "uart0", "dout_pclkp", CLK_GATE_IP3, 17, 0, 0),
	GATE(CLK_SYSTIMER, "systimer", "dout_pclkp", CLK_GATE_IP3, 16, 0, 0),
	GATE(CLK_RTC, "rtc", "dout_pclkp", CLK_GATE_IP3, 15, 0, 0),
	GATE(CLK_SPI0, "spi0", "dout_pclkp", CLK_GATE_IP3, 12, 0, 0),
	GATE(CLK_I2C2, "i2c2", "dout_pclkp", CLK_GATE_IP3, 9, 0, 0),
	GATE(CLK_I2C0, "i2c0", "dout_pclkp", CLK_GATE_IP3, 7, 0, 0),
	GATE(CLK_I2S1, "i2s1", "dout_pclkp", CLK_GATE_IP3, 5, 0, 0),
	GATE(CLK_I2S0, "i2s0", "dout_pclkp", CLK_GATE_IP3, 4, 0, 0),

	GATE(CLK_SECKEY, "seckey", "dout_pclkp", CLK_GATE_IP4, 3, 0, 0),
	GATE(CLK_CHIPID, "chipid", "dout_pclkp", CLK_GATE_IP4, 0, 0, 0),

	GATE(SCLK_AUDIO1, "sclk_audio1", "dout_audio1", CLK_SRC_MASK0, 25,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_AUDIO0, "sclk_audio0", "dout_audio0", CLK_SRC_MASK0, 24,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_PWM, "sclk_pwm", "dout_pwm", CLK_SRC_MASK0, 19,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_SPI0, "sclk_spi0", "dout_spi0", CLK_SRC_MASK0, 16,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_UART2, "sclk_uart2", "dout_uart2", CLK_SRC_MASK0, 14,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_UART1, "sclk_uart1", "dout_uart1", CLK_SRC_MASK0, 13,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_UART0, "sclk_uart0", "dout_uart0", CLK_SRC_MASK0, 12,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_MMC2, "sclk_mmc2", "dout_mmc2", CLK_SRC_MASK0, 10,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_MMC1, "sclk_mmc1", "dout_mmc1", CLK_SRC_MASK0, 9,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_MMC0, "sclk_mmc0", "dout_mmc0", CLK_SRC_MASK0, 8,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_FIMD, "sclk_fimd", "dout_fimd", CLK_SRC_MASK0, 5,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_CAM1, "sclk_cam1", "dout_cam1", CLK_SRC_MASK0, 4,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_CAM0, "sclk_cam0", "dout_cam0", CLK_SRC_MASK0, 3,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_MIXER, "sclk_mixer", "mout_mixer", CLK_SRC_MASK0, 1,
			CLK_SET_RATE_PARENT, 0),

	GATE(SCLK_FIMC2, "sclk_fimc2", "dout_fimc2", CLK_SRC_MASK1, 4,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_FIMC1, "sclk_fimc1", "dout_fimc1", CLK_SRC_MASK1, 3,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_FIMC0, "sclk_fimc0", "dout_fimc0", CLK_SRC_MASK1, 2,
			CLK_SET_RATE_PARENT, 0),
};

/* S5PV210-specific clock gates. */
static const struct samsung_gate_clock s5pv210_gate_clks[] __initconst = {
	GATE(CLK_CSIS, "clk_csis", "dout_hclkd", CLK_GATE_IP0, 31, 0, 0),
	GATE(CLK_MFC, "mfc", "dout_hclkm", CLK_GATE_IP0, 16, 0, 0),
	GATE(CLK_G2D, "g2d", "dout_hclkd", CLK_GATE_IP0, 12, 0, 0),
	GATE(CLK_G3D, "g3d", "dout_hclkm", CLK_GATE_IP0, 8, 0, 0),
	GATE(CLK_IMEM, "imem", "dout_hclkm", CLK_GATE_IP0, 5, 0, 0),
	GATE(CLK_PDMA1, "pdma1", "dout_hclkp", CLK_GATE_IP0, 4, 0, 0),

	GATE(CLK_NFCON, "nfcon", "dout_hclkp", CLK_GATE_IP1, 28, 0, 0),
	GATE(CLK_CFCON, "cfcon", "dout_hclkp", CLK_GATE_IP1, 25, 0, 0),
	GATE(CLK_USB_HOST, "usb_host", "dout_hclkp", CLK_GATE_IP1, 17, 0, 0),
	GATE(CLK_HDMI, "hdmi", "dout_hclkd", CLK_GATE_IP1, 11, 0, 0),
	GATE(CLK_DSIM, "dsim", "dout_pclkd", CLK_GATE_IP1, 2, 0, 0),

	GATE(CLK_TZIC3, "tzic3", "dout_hclkm", CLK_GATE_IP2, 31, 0, 0),
	GATE(CLK_TZIC2, "tzic2", "dout_hclkm", CLK_GATE_IP2, 30, 0, 0),
	GATE(CLK_TZIC1, "tzic1", "dout_hclkm", CLK_GATE_IP2, 29, 0, 0),
	GATE(CLK_TZIC0, "tzic0", "dout_hclkm", CLK_GATE_IP2, 28, 0, 0),
	GATE(CLK_TSI, "tsi", "dout_hclkd", CLK_GATE_IP2, 20, 0, 0),
	GATE(CLK_HSMMC3, "hsmmc3", "dout_hclkp", CLK_GATE_IP2, 19, 0, 0),
	GATE(CLK_JTAG, "jtag", "dout_hclkp", CLK_GATE_IP2, 11, 0, 0),
	GATE(CLK_CORESIGHT, "coresight", "dout_pclkp", CLK_GATE_IP2, 8, 0, 0),
	GATE(CLK_SDM, "sdm", "dout_pclkm", CLK_GATE_IP2, 1, 0, 0),

	GATE(CLK_PCM2, "pcm2", "dout_pclkp", CLK_GATE_IP3, 30, 0, 0),
	GATE(CLK_UART3, "uart3", "dout_pclkp", CLK_GATE_IP3, 20, 0, 0),
	GATE(CLK_SPI1, "spi1", "dout_pclkp", CLK_GATE_IP3, 13, 0, 0),
	GATE(CLK_I2C_HDMI_PHY, "i2c_hdmi_phy", "dout_pclkd",
			CLK_GATE_IP3, 11, 0, 0),
	GATE(CLK_I2C1, "i2c1", "dout_pclkd", CLK_GATE_IP3, 10, 0, 0),
	GATE(CLK_I2S2, "i2s2", "dout_pclkp", CLK_GATE_IP3, 6, 0, 0),
	GATE(CLK_AC97, "ac97", "dout_pclkp", CLK_GATE_IP3, 1, 0, 0),
	GATE(CLK_SPDIF, "spdif", "dout_pclkp", CLK_GATE_IP3, 0, 0, 0),

	GATE(CLK_TZPC3, "tzpc.3", "dout_pclkd", CLK_GATE_IP4, 8, 0, 0),
	GATE(CLK_TZPC2, "tzpc.2", "dout_pclkd", CLK_GATE_IP4, 7, 0, 0),
	GATE(CLK_TZPC1, "tzpc.1", "dout_pclkp", CLK_GATE_IP4, 6, 0, 0),
	GATE(CLK_TZPC0, "tzpc.0", "dout_pclkm", CLK_GATE_IP4, 5, 0, 0),
	GATE(CLK_IEM_APC, "iem_apc", "dout_pclkp", CLK_GATE_IP4, 2, 0, 0),
	GATE(CLK_IEM_IEC, "iem_iec", "dout_pclkp", CLK_GATE_IP4, 1, 0, 0),

	GATE(CLK_JPEG, "jpeg", "dout_hclkd", CLK_GATE_IP5, 29, 0, 0),

	GATE(SCLK_SPDIF, "sclk_spdif", "mout_spdif", CLK_SRC_MASK0, 27,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_AUDIO2, "sclk_audio2", "dout_audio2", CLK_SRC_MASK0, 26,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_SPI1, "sclk_spi1", "dout_spi1", CLK_SRC_MASK0, 17,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_UART3, "sclk_uart3", "dout_uart3", CLK_SRC_MASK0, 15,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_MMC3, "sclk_mmc3", "dout_mmc3", CLK_SRC_MASK0, 11,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_CSIS, "sclk_csis", "dout_csis", CLK_SRC_MASK0, 6,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_DAC, "sclk_dac", "mout_dac", CLK_SRC_MASK0, 2,
			CLK_SET_RATE_PARENT, 0),
	GATE(SCLK_HDMI, "sclk_hdmi", "mout_hdmi", CLK_SRC_MASK0, 0,
			CLK_SET_RATE_PARENT, 0),
};

/* S5P6442-specific clock gates. */
static const struct samsung_gate_clock s5p6442_gate_clks[] __initconst = {
	GATE(CLK_JPEG, "jpeg", "dout_hclkd", CLK_GATE_IP0, 28, 0, 0),
	GATE(CLK_MFC, "mfc", "dout_hclkd", CLK_GATE_IP0, 16, 0, 0),
	GATE(CLK_G2D, "g2d", "dout_hclkd", CLK_GATE_IP0, 12, 0, 0),
	GATE(CLK_G3D, "g3d", "dout_hclkd", CLK_GATE_IP0, 8, 0, 0),
	GATE(CLK_IMEM, "imem", "dout_hclkd", CLK_GATE_IP0, 5, 0, 0),

	GATE(CLK_ETB, "etb", "dout_hclkd", CLK_GATE_IP1, 31, 0, 0),
	GATE(CLK_ETM, "etm", "dout_hclkd", CLK_GATE_IP1, 30, 0, 0),

	GATE(CLK_I2C1, "i2c1", "dout_pclkp", CLK_GATE_IP3, 8, 0, 0),

	GATE(SCLK_DAC, "sclk_dac", "mout_vpll", CLK_SRC_MASK0, 2,
			CLK_SET_RATE_PARENT, 0),
};

/*
 * Clock aliases for legacy clkdev look-up.
 * NOTE: Needed only to support legacy board files.
 */
static const struct samsung_clock_alias s5pv210_aliases[] __initconst = {
	ALIAS(DOUT_APLL, NULL, "armclk"),
	ALIAS(DOUT_HCLKM, NULL, "hclk_msys"),
	ALIAS(MOUT_DMC0, NULL, "sclk_dmc0"),
};

/* S5PV210-specific PLLs. */
static const struct samsung_pll_clock s5pv210_pll_clks[] __initconst = {
	[apll] = PLL(pll_4508, FOUT_APLL, "fout_apll", "fin_pll",
						APLL_LOCK, APLL_CON0, NULL),
	[mpll] = PLL(pll_4502, FOUT_MPLL, "fout_mpll", "fin_pll",
						MPLL_LOCK, MPLL_CON, NULL),
	[epll] = PLL(pll_4600, FOUT_EPLL, "fout_epll", "fin_pll",
						EPLL_LOCK, EPLL_CON0, NULL),
	[vpll] = PLL(pll_4502, FOUT_VPLL, "fout_vpll", "mout_vpllsrc",
						VPLL_LOCK, VPLL_CON, NULL),
};

/* S5P6442-specific PLLs. */
static const struct samsung_pll_clock s5p6442_pll_clks[] __initconst = {
	[apll] = PLL(pll_4502, FOUT_APLL, "fout_apll", "fin_pll",
						APLL_LOCK, APLL_CON0, NULL),
	[mpll] = PLL(pll_4502, FOUT_MPLL, "fout_mpll", "fin_pll",
						MPLL_LOCK, MPLL_CON, NULL),
	[epll] = PLL(pll_4500, FOUT_EPLL, "fout_epll", "fin_pll",
						EPLL_LOCK, EPLL_CON0, NULL),
	[vpll] = PLL(pll_4500, FOUT_VPLL, "fout_vpll", "fin_pll",
						VPLL_LOCK, VPLL_CON, NULL),
};

static void __init __s5pv210_clk_init(struct device_node *np,
				      unsigned long xxti_f,
				      unsigned long xusbxti_f,
				      bool is_s5p6442)
{
	struct samsung_clk_provider *ctx;

	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
	if (!ctx)
		panic("%s: unable to allocate context.\n", __func__);

	samsung_clk_register_mux(ctx, early_mux_clks,
					ARRAY_SIZE(early_mux_clks));

	if (is_s5p6442) {
		samsung_clk_register_fixed_rate(ctx, s5p6442_frate_clks,
			ARRAY_SIZE(s5p6442_frate_clks));
		samsung_clk_register_pll(ctx, s5p6442_pll_clks,
			ARRAY_SIZE(s5p6442_pll_clks), reg_base);
		samsung_clk_register_mux(ctx, s5p6442_mux_clks,
				ARRAY_SIZE(s5p6442_mux_clks));
		samsung_clk_register_div(ctx, s5p6442_div_clks,
				ARRAY_SIZE(s5p6442_div_clks));
		samsung_clk_register_gate(ctx, s5p6442_gate_clks,
				ARRAY_SIZE(s5p6442_gate_clks));
	} else {
		samsung_clk_register_fixed_rate(ctx, s5pv210_frate_clks,
			ARRAY_SIZE(s5pv210_frate_clks));
		samsung_clk_register_pll(ctx, s5pv210_pll_clks,
			ARRAY_SIZE(s5pv210_pll_clks), reg_base);
		samsung_clk_register_mux(ctx, s5pv210_mux_clks,
				ARRAY_SIZE(s5pv210_mux_clks));
		samsung_clk_register_div(ctx, s5pv210_div_clks,
				ARRAY_SIZE(s5pv210_div_clks));
		samsung_clk_register_gate(ctx, s5pv210_gate_clks,
				ARRAY_SIZE(s5pv210_gate_clks));
	}

	samsung_clk_register_mux(ctx, mux_clks, ARRAY_SIZE(mux_clks));
	samsung_clk_register_div(ctx, div_clks, ARRAY_SIZE(div_clks));
	samsung_clk_register_gate(ctx, gate_clks, ARRAY_SIZE(gate_clks));

	samsung_clk_register_fixed_factor(ctx, ffactor_clks,
						ARRAY_SIZE(ffactor_clks));

	samsung_clk_register_alias(ctx, s5pv210_aliases,
						ARRAY_SIZE(s5pv210_aliases));

	s5pv210_clk_sleep_init();

	samsung_clk_of_add_provider(np, ctx);

	pr_info("%s clocks: mout_apll = %ld, mout_mpll = %ld\n"
		"\tmout_epll = %ld, mout_vpll = %ld\n",
		is_s5p6442 ? "S5P6442" : "S5PV210",
		_get_rate("mout_apll"), _get_rate("mout_mpll"),
		_get_rate("mout_epll"), _get_rate("mout_vpll"));
}

static void __init s5pv210_clk_dt_init(struct device_node *np)
{
	reg_base = of_iomap(np, 0);
	if (!reg_base)
		panic("%s: failed to map registers\n", __func__);

	__s5pv210_clk_init(np, 0, 0, false);
}
CLK_OF_DECLARE(s5pv210_clk, "samsung,s5pv210-clock", s5pv210_clk_dt_init);

static void __init s5p6442_clk_dt_init(struct device_node *np)
{
	reg_base = of_iomap(np, 0);
	if (!reg_base)
		panic("%s: failed to map registers\n", __func__);

	__s5pv210_clk_init(np, 0, 0, true);
}
CLK_OF_DECLARE(s5p6442_clk, "samsung,s5p6442-clock", s5p6442_clk_dt_init);