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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2010 Samsung Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
- * Kyungmin Park <kyungmin.park@samsung.com>
- */
- #include <common.h>
- #include <env.h>
- #include <log.h>
- #include <spi.h>
- #include <lcd.h>
- #include <asm/global_data.h>
- #include <asm/io.h>
- #include <asm/gpio.h>
- #include <asm/arch/adc.h>
- #include <asm/arch/pinmux.h>
- #include <asm/arch/watchdog.h>
- #include <ld9040.h>
- #include <linux/delay.h>
- #include <power/pmic.h>
- #include <usb.h>
- #include <usb/dwc2_udc.h>
- #include <asm/arch/cpu.h>
- #include <power/max8998_pmic.h>
- #include <libtizen.h>
- #include <samsung/misc.h>
- #include <usb_mass_storage.h>
- #include <asm/mach-types.h>
- DECLARE_GLOBAL_DATA_PTR;
- unsigned int board_rev;
- static int init_pmic_lcd(void);
- u32 get_board_rev(void)
- {
- return board_rev;
- }
- int exynos_power_init(void)
- {
- return init_pmic_lcd();
- }
- static int get_hwrev(void)
- {
- return board_rev & 0xFF;
- }
- static unsigned short get_adc_value(int channel)
- {
- struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
- unsigned short ret = 0;
- unsigned int reg;
- unsigned int loop = 0;
- writel(channel & 0xF, &adc->adcmux);
- writel((1 << 14) | (49 << 6), &adc->adccon);
- writel(1000 & 0xffff, &adc->adcdly);
- writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
- udelay(10);
- writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
- udelay(10);
- do {
- udelay(1);
- reg = readl(&adc->adccon);
- } while (!(reg & (1 << 15)) && (loop++ < 1000));
- ret = readl(&adc->adcdat0) & 0xFFF;
- return ret;
- }
- static int adc_power_control(int on)
- {
- struct udevice *dev;
- int ret;
- u8 reg;
- ret = pmic_get("max8998-pmic", &dev);
- if (ret) {
- puts("Failed to get MAX8998!\n");
- return ret;
- }
- reg = pmic_reg_read(dev, MAX8998_REG_ONOFF1);
- if (on)
- reg |= MAX8998_LDO4;
- else
- reg &= ~MAX8998_LDO4;
- ret = pmic_reg_write(dev, MAX8998_REG_ONOFF1, reg);
- if (ret) {
- puts("MAX8998 LDO setting error\n");
- return -EINVAL;
- }
- return 0;
- }
- static unsigned int get_hw_revision(void)
- {
- int hwrev, mode0, mode1;
- adc_power_control(1);
- mode0 = get_adc_value(1); /* HWREV_MODE0 */
- mode1 = get_adc_value(2); /* HWREV_MODE1 */
- /*
- * XXX Always set the default hwrev as the latest board
- * ADC = (voltage) / 3.3 * 4096
- */
- hwrev = 3;
- #define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max))
- if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
- hwrev = 0x0; /* 0.01V 0.01V */
- if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
- hwrev = 0x1; /* 610mV 0.01V */
- if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
- hwrev = 0x2; /* 1.16V 0.01V */
- if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
- hwrev = 0x3; /* 1.79V 0.01V */
- #undef IS_RANGE
- debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
- adc_power_control(0);
- 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 ret;
- u8 reg;
- ret = pmic_get("max8998-pmic", &dev);
- if (ret) {
- puts("Failed to get MAX8998!\n");
- return ret;
- }
- if (on) {
- reg = pmic_reg_read(dev, MAX8998_REG_BUCK_ACTIVE_DISCHARGE3);
- reg |= MAX8998_SAFEOUT1;
- ret |= pmic_reg_write(dev,
- MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, reg);
- reg = pmic_reg_read(dev, MAX8998_REG_ONOFF1);
- reg |= MAX8998_LDO3;
- ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF1, reg);
- reg = pmic_reg_read(dev, MAX8998_REG_ONOFF2);
- reg |= MAX8998_LDO8;
- ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF2, reg);
- } else {
- reg = pmic_reg_read(dev, MAX8998_REG_ONOFF2);
- reg &= ~MAX8998_LDO8;
- ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF2, reg);
- reg = pmic_reg_read(dev, MAX8998_REG_ONOFF1);
- reg &= ~MAX8998_LDO3;
- ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF1, reg);
- reg = pmic_reg_read(dev, MAX8998_REG_BUCK_ACTIVE_DISCHARGE3);
- reg &= ~MAX8998_SAFEOUT1;
- ret |= pmic_reg_write(dev,
- MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, reg);
- }
- if (ret) {
- puts("MAX8998 LDO setting error!\n");
- return -EINVAL;
- }
- 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,
- };
- #endif
- int board_usb_init(int index, enum usb_init_type init)
- {
- debug("USB_udc_probe\n");
- return dwc2_udc_probe(&s5pc210_otg_data);
- }
- int exynos_early_init_f(void)
- {
- wdt_stop();
- return 0;
- }
- static int init_pmic_lcd(void)
- {
- struct udevice *dev;
- unsigned char val;
- int ret = 0;
- ret = pmic_get("max8998-pmic", &dev);
- if (ret) {
- puts("Failed to get MAX8998 for init_pmic_lcd()!\n");
- return ret;
- }
- /* LDO7 1.8V */
- val = 0x02; /* (1800 - 1600) / 100; */
- ret |= pmic_reg_write(dev, MAX8998_REG_LDO7, val);
- /* LDO17 3.0V */
- val = 0xe; /* (3000 - 1600) / 100; */
- ret |= pmic_reg_write(dev, MAX8998_REG_LDO17, val);
- /* Disable unneeded regulators */
- /*
- * ONOFF1
- * Buck1 ON, Buck2 OFF, Buck3 ON, Buck4 ON
- * LDO2 ON, LDO3 OFF, LDO4 OFF, LDO5 ON
- */
- val = 0xB9;
- ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF1, val);
- /* ONOFF2
- * LDO6 OFF, LDO7 ON, LDO8 OFF, LDO9 ON,
- * LDO10 OFF, LDO11 OFF, LDO12 OFF, LDO13 OFF
- */
- val = 0x50;
- ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF2, val);
- /* ONOFF3
- * LDO14 OFF, LDO15 OFF, LGO16 OFF, LDO17 OFF
- * EPWRHOLD OFF, EBATTMON OFF, ELBCNFG2 OFF, ELBCNFG1 OFF
- */
- val = 0x00;
- ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF3, val);
- if (ret) {
- puts("LCD pmic initialisation error!\n");
- return -EINVAL;
- }
- return 0;
- }
- void exynos_cfg_lcd_gpio(void)
- {
- unsigned int i, f3_end = 4;
- for (i = 0; i < 8; i++) {
- /* set GPF0,1,2[0:7] for RGB Interface and Data lines (32bit) */
- gpio_cfg_pin(EXYNOS4_GPIO_F00 + i, S5P_GPIO_FUNC(2));
- gpio_cfg_pin(EXYNOS4_GPIO_F10 + i, S5P_GPIO_FUNC(2));
- gpio_cfg_pin(EXYNOS4_GPIO_F20 + i, S5P_GPIO_FUNC(2));
- /* pull-up/down disable */
- gpio_set_pull(EXYNOS4_GPIO_F00 + i, S5P_GPIO_PULL_NONE);
- gpio_set_pull(EXYNOS4_GPIO_F10 + i, S5P_GPIO_PULL_NONE);
- gpio_set_pull(EXYNOS4_GPIO_F20 + i, S5P_GPIO_PULL_NONE);
- /* drive strength to max (24bit) */
- gpio_set_drv(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_4X);
- gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW);
- gpio_set_drv(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_4X);
- gpio_set_rate(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_SLOW);
- gpio_set_drv(EXYNOS4_GPIO_F20 + i, S5P_GPIO_DRV_4X);
- gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW);
- }
- for (i = EXYNOS4_GPIO_F30; i < (EXYNOS4_GPIO_F30 + f3_end); i++) {
- /* set GPF3[0:3] for RGB Interface and Data lines (32bit) */
- gpio_cfg_pin(i, S5P_GPIO_FUNC(2));
- /* pull-up/down disable */
- gpio_set_pull(i, S5P_GPIO_PULL_NONE);
- /* drive strength to max (24bit) */
- gpio_set_drv(i, S5P_GPIO_DRV_4X);
- gpio_set_rate(i, S5P_GPIO_DRV_SLOW);
- }
- /* gpio pad configuration for LCD reset. */
- gpio_request(EXYNOS4_GPIO_Y45, "lcd_reset");
- gpio_cfg_pin(EXYNOS4_GPIO_Y45, S5P_GPIO_OUTPUT);
- }
- int mipi_power(void)
- {
- return 0;
- }
- void exynos_reset_lcd(void)
- {
- gpio_set_value(EXYNOS4_GPIO_Y45, 1);
- udelay(10000);
- gpio_set_value(EXYNOS4_GPIO_Y45, 0);
- udelay(10000);
- gpio_set_value(EXYNOS4_GPIO_Y45, 1);
- udelay(100);
- }
- void exynos_lcd_power_on(void)
- {
- struct udevice *dev;
- int ret;
- u8 reg;
- ret = pmic_get("max8998-pmic", &dev);
- if (ret) {
- puts("Failed to get MAX8998!\n");
- return;
- }
- reg = pmic_reg_read(dev, MAX8998_REG_ONOFF3);
- reg |= MAX8998_LDO17;
- ret = pmic_reg_write(dev, MAX8998_REG_ONOFF3, reg);
- if (ret) {
- puts("MAX8998 LDO setting error\n");
- return;
- }
- reg = pmic_reg_read(dev, MAX8998_REG_ONOFF2);
- reg |= MAX8998_LDO7;
- ret = pmic_reg_write(dev, MAX8998_REG_ONOFF2, reg);
- if (ret) {
- puts("MAX8998 LDO setting error\n");
- return;
- }
- }
- void exynos_cfg_ldo(void)
- {
- ld9040_cfg_ldo();
- }
- void exynos_enable_ldo(unsigned int onoff)
- {
- ld9040_enable_ldo(onoff);
- }
- int exynos_init(void)
- {
- gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
- switch (get_hwrev()) {
- case 0:
- /*
- * Set the low to enable LDO_EN
- * But when you use the test board for eMMC booting
- * you should set it HIGH since it removes the inverter
- */
- /* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
- gpio_request(EXYNOS4_GPIO_E36, "ldo_en");
- gpio_direction_output(EXYNOS4_GPIO_E36, 0);
- break;
- default:
- /*
- * Default reset state is High and there's no inverter
- * But set it as HIGH to ensure
- */
- /* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
- gpio_request(EXYNOS4_GPIO_E13, "massmemory_en");
- gpio_direction_output(EXYNOS4_GPIO_E13, 1);
- break;
- }
- check_hw_revision();
- printf("HW Revision:\t0x%x\n", board_rev);
- return 0;
- }
- #ifdef CONFIG_LCD
- void exynos_lcd_misc_init(vidinfo_t *vid)
- {
- #ifdef CONFIG_TIZEN
- get_tizen_logo_info(vid);
- #endif
- /* for LD9040. */
- vid->pclk_name = 1; /* MPLL */
- vid->sclk_div = 1;
- env_set("lcdinfo", "lcd=ld9040");
- }
- #endif
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