| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <delay.h> |
| #include <drivers/parade/ps8640/ps8640.h> |
| #include <edid.h> |
| #include <gpio.h> |
| #include <soc/i2c.h> |
| |
| #include "panel.h" |
| |
| static void power_on_ps8640(void) |
| { |
| /* Disable backlight before turning on bridge */ |
| gpio_output(GPIO(PERIPHERAL_EN13), 0); |
| gpio_output(GPIO(DISP_PWM), 0); |
| |
| /* Turn on bridge */ |
| gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 0); |
| gpio_output(GPIO_PP1200_MIPIBRDG_EN, 1); |
| gpio_output(GPIO_VDDIO_MIPIBRDG_EN, 1); |
| mdelay(2); |
| gpio_output(GPIO_MIPIBRDG_PWRDN_L_1V8, 1); |
| mdelay(2); |
| gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 1); |
| gpio_output(GPIO_PP3300_LCM_EN, 1); |
| } |
| |
| static void dummy_power_on(void) |
| { |
| /* The panel has been already powered on when getting panel information |
| * so we should do nothing here. |
| */ |
| } |
| |
| static struct panel_serializable_data ps8640_data = { |
| .orientation = LB_FB_ORIENTATION_NORMAL, |
| .init = { PANEL_END }, |
| }; |
| |
| static struct panel_description ps8640_panel = { |
| .s = &ps8640_data, |
| .power_on = dummy_power_on, |
| }; |
| |
| struct panel_description *get_panel_description(int panel_id) |
| { |
| /* To read panel EDID, we have to first power on PS8640. */ |
| power_on_ps8640(); |
| |
| u8 i2c_bus = 4, i2c_addr = 0x08; |
| mtk_i2c_bus_init(i2c_bus); |
| |
| ps8640_init(i2c_bus, i2c_addr); |
| struct edid *edid = &ps8640_data.edid; |
| if (ps8640_get_edid(i2c_bus, i2c_addr, edid)) { |
| printk(BIOS_ERR, "Can't get panel's edid\n"); |
| return NULL; |
| } |
| return &ps8640_panel; |
| } |