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u-boot/board/samsung/universal_c210/universal.c
Simon Glass 7f1961018c dm: exynos: Make sure that GPIOs are requested 
With driver model GPIOs must be requested before use. Make sure this is
done correctly.

(Note that the soft SPI part of universal is omitted, since this driver
is about to be replaced with a driver-model-aware version)

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22 10:36:33 -06:00

424 lines
9 KiB
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/*
* Copyright (C) 2010 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Kyungmin Park <kyungmin.park@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spi.h>
#include <lcd.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 <power/pmic.h>
#include <usb.h>
#include <usb/s3c_udc.h>
#include <asm/arch/cpu.h>
#include <power/max8998_pmic.h>
#include <libtizen.h>
#include <samsung/misc.h>
#include <usb_mass_storage.h>
DECLARE_GLOBAL_DATA_PTR;
unsigned int board_rev;
u32 get_board_rev(void)
{
return board_rev;
}
static int get_hwrev(void)
{
return board_rev & 0xFF;
}
static void init_pmic_lcd(void);
int exynos_power_init(void)
{
int ret;
/*
* For PMIC the I2C bus is named as I2C5, but it is connected
* to logical I2C adapter 0
*/
ret = pmic_init(I2C_0);
if (ret)
return ret;
init_pmic_lcd();
return 0;
}
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)
{
int ret;
struct pmic *p = pmic_get("MAX8998_PMIC");
if (!p)
return -ENODEV;
if (pmic_probe(p))
return -1;
ret = pmic_set_output(p,
MAX8998_REG_ONOFF1,
MAX8998_LDO4, !!on);
return ret;
}
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)
{
int ret = 0;
struct pmic *p = pmic_get("MAX8998_PMIC");
if (!p)
return -ENODEV;
if (pmic_probe(p))
return -1;
if (on) {
ret |= pmic_set_output(p,
MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
MAX8998_SAFEOUT1, LDO_ON);
ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
MAX8998_LDO3, LDO_ON);
ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
MAX8998_LDO8, LDO_ON);
} else {
ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
MAX8998_LDO8, LDO_OFF);
ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
MAX8998_LDO3, LDO_OFF);
ret |= pmic_set_output(p,
MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
MAX8998_SAFEOUT1, LDO_OFF);
}
if (ret) {
puts("MAX8998 LDO setting error!\n");
return -1;
}
return 0;
}
struct s3c_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 s3c_udc_probe(&s5pc210_otg_data);
}
int exynos_early_init_f(void)
{
wdt_stop();
return 0;
}
#ifdef CONFIG_SOFT_SPI
static void soft_spi_init(void)
{
gpio_direction_output(CONFIG_SOFT_SPI_GPIO_SCLK,
CONFIG_SOFT_SPI_MODE & SPI_CPOL);
gpio_direction_output(CONFIG_SOFT_SPI_GPIO_MOSI, 1);
gpio_direction_input(CONFIG_SOFT_SPI_GPIO_MISO);
gpio_direction_output(CONFIG_SOFT_SPI_GPIO_CS,
!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
}
void spi_cs_activate(struct spi_slave *slave)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
SPI_SCL(1);
gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
}
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && cs == 0;
}
void universal_spi_scl(int bit)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_SCLK, bit);
}
void universal_spi_sda(int bit)
{
gpio_set_value(CONFIG_SOFT_SPI_GPIO_MOSI, bit);
}
int universal_spi_read(void)
{
return gpio_get_value(CONFIG_SOFT_SPI_GPIO_MISO);
}
#endif
static void init_pmic_lcd(void)
{
unsigned char val;
int ret = 0;
struct pmic *p = pmic_get("MAX8998_PMIC");
if (!p)
return;
if (pmic_probe(p))
return;
/* LDO7 1.8V */
val = 0x02; /* (1800 - 1600) / 100; */
ret |= pmic_reg_write(p, MAX8998_REG_LDO7, val);
/* LDO17 3.0V */
val = 0xe; /* (3000 - 1600) / 100; */
ret |= pmic_reg_write(p, 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(p, 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(p, 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(p, MAX8998_REG_ONOFF3, val);
if (ret)
puts("LCD pmic initialisation error!\n");
}
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);
spi_init();
}
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 pmic *p = pmic_get("MAX8998_PMIC");
if (!p)
return;
if (pmic_probe(p))
return;
pmic_set_output(p, MAX8998_REG_ONOFF3, MAX8998_LDO17, LDO_ON);
pmic_set_output(p, MAX8998_REG_ONOFF2, MAX8998_LDO7, LDO_ON);
}
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;
}
#ifdef CONFIG_SOFT_SPI
soft_spi_init();
#endif
check_hw_revision();
printf("HW Revision:\t0x%x\n", board_rev);
return 0;
}
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;
setenv("lcdinfo", "lcd=ld9040");
}
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