// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2011 Samsung Electronics
 * Heungjun Kim <riverful.kim@samsung.com>
 * Kyungmin Park <kyungmin.park@samsung.com>
 * Donghwa Lee <dh09.lee@samsung.com>
 */

#include <common.h>
#include <env.h>
#include <log.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/arch/cpu.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/clock.h>
#include <asm/arch/mipi_dsim.h>
#include <asm/arch/watchdog.h>
#include <asm/arch/power.h>
#include <linux/delay.h>
#include <power/pmic.h>
#include <usb/dwc2_udc.h>
#include <power/max8997_pmic.h>
#include <power/max8997_muic.h>
#include <power/battery.h>
#include <power/max17042_fg.h>
#include <power/pmic.h>
#include <libtizen.h>
#include <usb.h>
#include <usb_mass_storage.h>

#include "setup.h"

unsigned int board_rev;

#ifdef CONFIG_REVISION_TAG
u32 get_board_rev(void)
{
	return board_rev;
}
#endif

static void check_hw_revision(void);
struct dwc2_plat_otg_data s5pc210_otg_data;

int exynos_init(void)
{
	check_hw_revision();
	printf("HW Revision:\t0x%x\n", board_rev);

	return 0;
}

#if !CONFIG_IS_ENABLED(DM_I2C) /* TODO(maintainer): Convert to driver model */
static void trats_low_power_mode(void)
{
	struct exynos4_clock *clk =
	    (struct exynos4_clock *)samsung_get_base_clock();
	struct exynos4_power *pwr =
	    (struct exynos4_power *)samsung_get_base_power();

	/* Power down CORE1 */
	/* LOCAL_PWR_CFG [1:0] 0x3 EN, 0x0 DIS */
	writel(0x0, &pwr->arm_core1_configuration);

	/* Change the APLL frequency */
	/* ENABLE (1 enable) | LOCKED (1 locked)  */
	/* [31]              | [29]               */
	/* FSEL      | MDIV          | PDIV            | SDIV */
	/* [27]      | [25:16]       | [13:8]          | [2:0]      */
	writel(0xa0c80604, &clk->apll_con0);

	/* Change CPU0 clock divider */
	/* CORE2_RATIO  | APLL_RATIO   | PCLK_DBG_RATIO | ATB_RATIO  */
	/* [30:28]      | [26:24]      | [22:20]        | [18:16]    */
	/* PERIPH_RATIO | COREM1_RATIO | COREM0_RATIO   | CORE_RATIO */
	/* [14:12]      | [10:8]       | [6:4]          | [2:0]      */
	writel(0x00000100, &clk->div_cpu0);

	/* CLK_DIV_STAT_CPU0 - wait until clock gets stable (0 = stable) */
	while (readl(&clk->div_stat_cpu0) & 0x1111111)
		continue;

	/* Change clock divider ratio for DMC */
	/* DMCP_RATIO                  | DMCD_RATIO  */
	/* [22:20]                     | [18:16]     */
	/* DMC_RATIO | DPHY_RATIO | ACP_PCLK_RATIO   | ACP_RATIO */
	/* [14:12]   | [10:8]     | [6:4]            | [2:0]     */
	writel(0x13113117, &clk->div_dmc0);

	/* CLK_DIV_STAT_DMC0 - wait until clock gets stable (0 = stable) */
	while (readl(&clk->div_stat_dmc0) & 0x11111111)
		continue;

	/* Turn off unnecessary power domains */
	writel(0x0, &pwr->xxti_configuration);	/* XXTI */
	writel(0x0, &pwr->cam_configuration);	/* CAM */
	writel(0x0, &pwr->tv_configuration);    /* TV */
	writel(0x0, &pwr->mfc_configuration);   /* MFC */
	writel(0x0, &pwr->g3d_configuration);   /* G3D */
	writel(0x0, &pwr->gps_configuration);   /* GPS */
	writel(0x0, &pwr->gps_alive_configuration);	/* GPS_ALIVE */

	/* Turn off unnecessary clocks */
	writel(0x0, &clk->gate_ip_cam);	/* CAM */
	writel(0x0, &clk->gate_ip_tv);          /* TV */
	writel(0x0, &clk->gate_ip_mfc);	/* MFC */
	writel(0x0, &clk->gate_ip_g3d);	/* G3D */
	writel(0x0, &clk->gate_ip_image);	/* IMAGE */
	writel(0x0, &clk->gate_ip_gps);	/* GPS */
}
#endif

int exynos_power_init(void)
{
#if !CONFIG_IS_ENABLED(DM_I2C) /* TODO(maintainer): Convert to driver model */
	int chrg, ret;
	struct power_battery *pb;
	struct pmic *p_fg, *p_chrg, *p_muic, *p_bat;

	/*
	 * For PMIC/MUIC the I2C bus is named as I2C5, but it is connected
	 * to logical I2C adapter 0
	 *
	 * The FUEL_GAUGE is marked as I2C9 on the schematic, but connected
	 * to logical I2C adapter 1
	 */
	ret = power_fg_init(I2C_9);
	ret |= power_muic_init(I2C_5);
	ret |= power_bat_init(0);
	if (ret)
		return ret;

	p_fg = pmic_get("MAX17042_FG");
	if (!p_fg) {
		puts("MAX17042_FG: Not found\n");
		return -ENODEV;
	}

	p_chrg = pmic_get("MAX8997_PMIC");
	if (!p_chrg) {
		puts("MAX8997_PMIC: Not found\n");
		return -ENODEV;
	}

	p_muic = pmic_get("MAX8997_MUIC");
	if (!p_muic) {
		puts("MAX8997_MUIC: Not found\n");
		return -ENODEV;
	}

	p_bat = pmic_get("BAT_TRATS");
	if (!p_bat) {
		puts("BAT_TRATS: Not found\n");
		return -ENODEV;
	}

	p_fg->parent =  p_bat;
	p_chrg->parent = p_bat;
	p_muic->parent = p_bat;

	p_bat->low_power_mode = trats_low_power_mode;
	p_bat->pbat->battery_init(p_bat, p_fg, p_chrg, p_muic);

	pb = p_bat->pbat;
	chrg = p_muic->chrg->chrg_type(p_muic);
	debug("CHARGER TYPE: %d\n", chrg);

	if (!p_chrg->chrg->chrg_bat_present(p_chrg)) {
		puts("No battery detected\n");
		return 0;
	}

	p_fg->fg->fg_battery_check(p_fg, p_bat);

	if (pb->bat->state == CHARGE && chrg == CHARGER_USB)
		puts("CHARGE Battery !\n");
#endif

	return 0;
}

static unsigned int get_hw_revision(void)
{
	int hwrev = 0;
	char str[10];
	int i;

	/* hw_rev[3:0] == GPE1[3:0] */
	for (i = 0; i < 4; i++) {
		int pin = i + EXYNOS4_GPIO_E10;

		sprintf(str, "hw_rev%d", i);
		gpio_request(pin, str);
		gpio_cfg_pin(pin, S5P_GPIO_INPUT);
		gpio_set_pull(pin, S5P_GPIO_PULL_NONE);
	}

	udelay(1);

	for (i = 0; i < 4; i++)
		hwrev |= (gpio_get_value(EXYNOS4_GPIO_E10 + i) << i);

	debug("hwrev 0x%x\n", hwrev);

	return hwrev;
}

static void check_hw_revision(void)
{
	int hwrev;

	hwrev = get_hw_revision();

	board_rev |= hwrev;
}


#ifdef CONFIG_USB_GADGET
static int s5pc210_phy_control(int on)
{
	struct udevice *dev;
	int reg, ret;

	ret = pmic_get("max8997-pmic", &dev);
	if (ret)
		return ret;

	if (on) {
		reg = pmic_reg_read(dev, MAX8997_REG_SAFEOUTCTRL);
		reg |= ENSAFEOUT1;
		ret = pmic_reg_write(dev, MAX8997_REG_SAFEOUTCTRL, reg);
		if (ret) {
			puts("MAX8997 setting error!\n");
			return ret;
		}
		reg = pmic_reg_read(dev, MAX8997_REG_LDO3CTRL);
		reg |= EN_LDO;
		ret = pmic_reg_write(dev, MAX8997_REG_LDO3CTRL, reg);
		if (ret) {
			puts("MAX8997 setting error!\n");
			return ret;
		}
		reg = pmic_reg_read(dev, MAX8997_REG_LDO8CTRL);
		reg |= EN_LDO;
		ret = pmic_reg_write(dev, MAX8997_REG_LDO8CTRL, reg);
		if (ret) {
			puts("MAX8997 setting error!\n");
			return ret;
		}
	} else {
		reg = pmic_reg_read(dev, MAX8997_REG_LDO8CTRL);
		reg &= DIS_LDO;
		ret = pmic_reg_write(dev, MAX8997_REG_LDO8CTRL, reg);
		if (ret) {
			puts("MAX8997 setting error!\n");
			return ret;
		}
		reg = pmic_reg_read(dev, MAX8997_REG_LDO3CTRL);
		reg &= DIS_LDO;
		ret = pmic_reg_write(dev, MAX8997_REG_LDO3CTRL, reg);
		if (ret) {
			puts("MAX8997 setting error!\n");
			return ret;
		}
		reg = pmic_reg_read(dev, MAX8997_REG_SAFEOUTCTRL);
		reg &= ~ENSAFEOUT1;
		ret = pmic_reg_write(dev, MAX8997_REG_SAFEOUTCTRL, reg);
		if (ret) {
			puts("MAX8997 setting error!\n");
			return ret;
		}

	}

	return 0;
}

struct dwc2_plat_otg_data s5pc210_otg_data = {
	.phy_control	= s5pc210_phy_control,
	.regs_phy	= EXYNOS4_USBPHY_BASE,
	.regs_otg	= EXYNOS4_USBOTG_BASE,
	.usb_phy_ctrl	= EXYNOS4_USBPHY_CONTROL,
	.usb_flags	= PHY0_SLEEP,
};

int board_usb_init(int index, enum usb_init_type init)
{
	debug("USB_udc_probe\n");
	return dwc2_udc_probe(&s5pc210_otg_data);
}

int g_dnl_board_usb_cable_connected(void)
{
#if !CONFIG_IS_ENABLED(DM_I2C) /* TODO(maintainer): Convert to driver model */
	struct pmic *muic = pmic_get("MAX8997_MUIC");
	if (!muic)
		return 0;

	return !!muic->chrg->chrg_type(muic);
#else
	return false;
#endif

}
#endif

static void pmic_reset(void)
{
	gpio_direction_output(EXYNOS4_GPIO_X07, 1);
	gpio_set_pull(EXYNOS4_GPIO_X27, S5P_GPIO_PULL_NONE);
}

static void board_clock_init(void)
{
	struct exynos4_clock *clk =
		(struct exynos4_clock *)samsung_get_base_clock();

	writel(CLK_SRC_CPU_VAL, (unsigned int)&clk->src_cpu);
	writel(CLK_SRC_TOP0_VAL, (unsigned int)&clk->src_top0);
	writel(CLK_SRC_FSYS_VAL, (unsigned int)&clk->src_fsys);
	writel(CLK_SRC_PERIL0_VAL, (unsigned int)&clk->src_peril0);

	writel(CLK_DIV_CPU0_VAL, (unsigned int)&clk->div_cpu0);
	writel(CLK_DIV_CPU1_VAL, (unsigned int)&clk->div_cpu1);
	writel(CLK_DIV_DMC0_VAL, (unsigned int)&clk->div_dmc0);
	writel(CLK_DIV_DMC1_VAL, (unsigned int)&clk->div_dmc1);
	writel(CLK_DIV_LEFTBUS_VAL, (unsigned int)&clk->div_leftbus);
	writel(CLK_DIV_RIGHTBUS_VAL, (unsigned int)&clk->div_rightbus);
	writel(CLK_DIV_TOP_VAL, (unsigned int)&clk->div_top);
	writel(CLK_DIV_FSYS1_VAL, (unsigned int)&clk->div_fsys1);
	writel(CLK_DIV_FSYS2_VAL, (unsigned int)&clk->div_fsys2);
	writel(CLK_DIV_FSYS3_VAL, (unsigned int)&clk->div_fsys3);
	writel(CLK_DIV_PERIL0_VAL, (unsigned int)&clk->div_peril0);
	writel(CLK_DIV_PERIL3_VAL, (unsigned int)&clk->div_peril3);

	writel(PLL_LOCKTIME, (unsigned int)&clk->apll_lock);
	writel(PLL_LOCKTIME, (unsigned int)&clk->mpll_lock);
	writel(PLL_LOCKTIME, (unsigned int)&clk->epll_lock);
	writel(PLL_LOCKTIME, (unsigned int)&clk->vpll_lock);
	writel(APLL_CON1_VAL, (unsigned int)&clk->apll_con1);
	writel(APLL_CON0_VAL, (unsigned int)&clk->apll_con0);
	writel(MPLL_CON1_VAL, (unsigned int)&clk->mpll_con1);
	writel(MPLL_CON0_VAL, (unsigned int)&clk->mpll_con0);
	writel(EPLL_CON1_VAL, (unsigned int)&clk->epll_con1);
	writel(EPLL_CON0_VAL, (unsigned int)&clk->epll_con0);
	writel(VPLL_CON1_VAL, (unsigned int)&clk->vpll_con1);
	writel(VPLL_CON0_VAL, (unsigned int)&clk->vpll_con0);

	writel(CLK_GATE_IP_CAM_VAL, (unsigned int)&clk->gate_ip_cam);
	writel(CLK_GATE_IP_VP_VAL, (unsigned int)&clk->gate_ip_tv);
	writel(CLK_GATE_IP_MFC_VAL, (unsigned int)&clk->gate_ip_mfc);
	writel(CLK_GATE_IP_G3D_VAL, (unsigned int)&clk->gate_ip_g3d);
	writel(CLK_GATE_IP_IMAGE_VAL, (unsigned int)&clk->gate_ip_image);
	writel(CLK_GATE_IP_LCD0_VAL, (unsigned int)&clk->gate_ip_lcd0);
	writel(CLK_GATE_IP_LCD1_VAL, (unsigned int)&clk->gate_ip_lcd1);
	writel(CLK_GATE_IP_FSYS_VAL, (unsigned int)&clk->gate_ip_fsys);
	writel(CLK_GATE_IP_GPS_VAL, (unsigned int)&clk->gate_ip_gps);
	writel(CLK_GATE_IP_PERIL_VAL, (unsigned int)&clk->gate_ip_peril);
	writel(CLK_GATE_IP_PERIR_VAL, (unsigned int)&clk->gate_ip_perir);
	writel(CLK_GATE_BLOCK_VAL, (unsigned int)&clk->gate_block);
}

static void board_power_init(void)
{
	struct exynos4_power *pwr =
		(struct exynos4_power *)samsung_get_base_power();

	/* PS HOLD */
	writel(EXYNOS4_PS_HOLD_CON_VAL, (unsigned int)&pwr->ps_hold_control);

	/* Set power down */
	writel(0, (unsigned int)&pwr->cam_configuration);
	writel(0, (unsigned int)&pwr->tv_configuration);
	writel(0, (unsigned int)&pwr->mfc_configuration);
	writel(0, (unsigned int)&pwr->g3d_configuration);
	writel(0, (unsigned int)&pwr->lcd1_configuration);
	writel(0, (unsigned int)&pwr->gps_configuration);
	writel(0, (unsigned int)&pwr->gps_alive_configuration);

	/* It is necessary to power down core 1 */
	/* to successfully boot CPU1 in kernel */
	writel(0, (unsigned int)&pwr->arm_core1_configuration);
}

static void exynos_uart_init(void)
{
	/* UART_SEL GPY4[7] (part2) at EXYNOS4 */
	gpio_request(EXYNOS4_GPIO_Y47, "uart_sel");
	gpio_set_pull(EXYNOS4_GPIO_Y47, S5P_GPIO_PULL_UP);
	gpio_direction_output(EXYNOS4_GPIO_Y47, 1);
}

int exynos_early_init_f(void)
{
	wdt_stop();
	pmic_reset();
	board_clock_init();
	exynos_uart_init();
	board_power_init();

	return 0;
}

int lcd_power(void)
{
#if !CONFIG_IS_ENABLED(DM_I2C) /* TODO(maintainer): Convert to driver model */
	int ret = 0;
	struct pmic *p = pmic_get("MAX8997_PMIC");
	if (!p)
		return -ENODEV;

	if (pmic_probe(p))
		return 0;

	/* LDO15 voltage: 2.2v */
	ret |= pmic_reg_write(p, MAX8997_REG_LDO15CTRL, 0x1c | EN_LDO);
	/* LDO13 voltage: 3.0v */
	ret |= pmic_reg_write(p, MAX8997_REG_LDO13CTRL, 0x2c | EN_LDO);

	if (ret) {
		puts("MAX8997 LDO setting error!\n");
		return -1;
	}
#endif
	return 0;
}

int mipi_power(void)
{
#if !CONFIG_IS_ENABLED(DM_I2C) /* TODO(maintainer): Convert to driver model */
	int ret = 0;
	struct pmic *p = pmic_get("MAX8997_PMIC");
	if (!p)
		return -ENODEV;

	if (pmic_probe(p))
		return 0;

	/* LDO3 voltage: 1.1v */
	ret |= pmic_reg_write(p, MAX8997_REG_LDO3CTRL, 0x6 | EN_LDO);
	/* LDO4 voltage: 1.8v */
	ret |= pmic_reg_write(p, MAX8997_REG_LDO4CTRL, 0x14 | EN_LDO);

	if (ret) {
		puts("MAX8997 LDO setting error!\n");
		return -1;
	}
#endif
	return 0;
}