diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/pit/mainboard.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/src/mainboard/google/pit/mainboard.c b/src/mainboard/google/pit/mainboard.c index 64783ad803..67d3b5d0ab 100644 --- a/src/mainboard/google/pit/mainboard.c +++ b/src/mainboard/google/pit/mainboard.c @@ -34,6 +34,7 @@ #include <cpu/samsung/exynos5420/power.h> #include <cpu/samsung/exynos5420/i2c.h> #include <cpu/samsung/exynos5420/dp-core.h> +#include <ec/google/chromeec/ec.h> #include "exynos5420.h" @@ -57,8 +58,6 @@ static enum exynos5_gpio_pin bl_en = GPIO_X22; /* active high */ static void exynos_dp_bridge_setup(void) { - exynos_pinmux_dphpd(); - gpio_set_value(dp_pd_l, 1); gpio_cfg_pin(dp_pd_l, GPIO_OUTPUT); gpio_set_pull(dp_pd_l, GPIO_PULL_NONE); @@ -68,6 +67,8 @@ static void exynos_dp_bridge_setup(void) gpio_set_pull(dp_rst_l, GPIO_PULL_NONE); udelay(10); gpio_set_value(dp_rst_l, 1); + + gpio_cfg_pin(dp_hpd, GPIO_INPUT); } static void exynos_dp_bridge_init(void) @@ -170,6 +171,35 @@ static void gpio_init(void) exynos_pinmux_i2c10(); } +enum { + FET_CTRL_WAIT = 3 << 2, + FET_CTRL_ADENFET = 1 << 1, + FET_CTRL_ENFET = 1 << 0 +}; + +static void tps65090_thru_ec_fet_set(int index) +{ + uint8_t value = FET_CTRL_ADENFET | FET_CTRL_WAIT | FET_CTRL_ENFET; + + if (google_chromeec_i2c_xfer(0x48, 0xe + index, 1, &value, 1, 0)) { + printk(BIOS_ERR, + "Error sending i2c pass through command to EC.\n"); + return; + } +} + +static void lcd_vdd(void) +{ + /* Enable FET6, lcd panel */ + tps65090_thru_ec_fet_set(6); +} + +static void backlight_vdd(void) +{ + /* Enable FET1, backlight */ + tps65090_thru_ec_fet_set(1); +} + /* this happens after cpu_init where exynos resources are set */ static void mainboard_init(device_t dev) { @@ -193,7 +223,7 @@ static void mainboard_init(device_t dev) fb_addr = cbmem_find(CBMEM_ID_CONSOLE); set_vbe_mode_info_valid(&edid, (uintptr_t)fb_addr); - // XXX Turn on the LCD power here. + lcd_vdd(); // FIXME: should timeout do { @@ -204,6 +234,7 @@ static void mainboard_init(device_t dev) for (dp_tries = 1; dp_tries <= MAX_DP_TRIES; dp_tries++) { exynos_dp_bridge_init(); if (exynos_dp_hotplug()) { + printk(BIOS_ERR, "Hotplug detect failed.\n"); exynos_dp_reset(); continue; } @@ -213,7 +244,7 @@ static void mainboard_init(device_t dev) udelay(LCD_T3_DELAY_MS * 1000); - // XXX Turn on the backlight power here. + backlight_vdd(); backlight_pwm(); backlight_en(); /* if we're here, we're successful */ |