| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <boardid.h> |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <gpio.h> |
| #include <identity.h> |
| #include <soc/gpio_common.h> |
| #include <soc/i2c.h> |
| #include <soc/pmif.h> |
| #include <soc/regulator.h> |
| |
| #include "gpio.h" |
| #include "panel.h" |
| |
| struct panel_description __weak *get_panel_description(uint32_t panel_id) |
| { |
| printk(BIOS_WARNING, "%s: %s: the panel configuration is not ready\n", |
| __func__, mainboard_part_number); |
| return NULL; |
| } |
| |
| struct panel_description *get_active_panel(void) |
| { |
| uint32_t active_panel_id = panel_id(); |
| return get_panel_description(active_panel_id); |
| } |
| |
| void configure_mipi_pwm_backlight(void) |
| { |
| gpio_output(GPIO_AP_DISP_BKLTEN, 0); |
| gpio_output(GPIO_MIPI_BL_PWM_1V8, 0); |
| } |
| |
| void fill_lp_backlight_gpios(struct lb_gpios *gpios) |
| { |
| struct panel_description *panel = get_active_panel(); |
| if (!panel || panel->disp_path == DISP_PATH_NONE) |
| return; |
| |
| struct lb_gpio mipi_pwm_gpios[] = { |
| {GPIO_MIPI_BL_PWM_1V8.id, ACTIVE_HIGH, -1, "PWM control"}, |
| }; |
| |
| struct lb_gpio edp_pwm_gpios[] = { |
| {GPIO_EDP_BL_PWM_1V8.id, ACTIVE_HIGH, -1, "PWM control"}, |
| }; |
| |
| if (panel->pwm_ctrl_gpio) { |
| /* PWM control for typical eDP and MIPI panels */ |
| if (panel->disp_path == DISP_PATH_MIPI) |
| lb_add_gpios(gpios, mipi_pwm_gpios, ARRAY_SIZE(mipi_pwm_gpios)); |
| else |
| lb_add_gpios(gpios, edp_pwm_gpios, ARRAY_SIZE(edp_pwm_gpios)); |
| } |
| |
| struct lb_gpio backlight_gpios[] = { |
| {GPIO_AP_DISP_BKLTEN.id, ACTIVE_HIGH, -1, "backlight enable"}, |
| }; |
| |
| lb_add_gpios(gpios, backlight_gpios, ARRAY_SIZE(backlight_gpios)); |
| } |
| |
| void power_on_mipi_panel(const struct tps65132s_cfg *cfg) |
| { |
| mtk_i2c_bus_init(cfg->i2c_bus, I2C_SPEED_FAST); |
| |
| /* Enable VM18V */ |
| mainboard_enable_regulator(MTK_REGULATOR_VDD18, true); |
| mdelay(2); |
| if (tps65132s_setup(cfg) != CB_SUCCESS) |
| printk(BIOS_ERR, "Failed to set up voltage regulator tps65132s\n"); |
| gpio_output(GPIO_DISP_RST_1V8_L, 0); |
| mdelay(1); |
| gpio_output(GPIO_DISP_RST_1V8_L, 1); |
| mdelay(1); |
| gpio_output(GPIO_DISP_RST_1V8_L, 0); |
| mdelay(1); |
| gpio_output(GPIO_DISP_RST_1V8_L, 1); |
| mdelay(6); |
| } |