src/mainboard/google/kukui/panel_anx7625.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <delay.h>
   5 #include <drivers/analogix/anx7625/anx7625.h>
   6 #include <edid.h>
   7 #include <gpio.h>
   8 #include <soc/dsi.h>
   9 #include <soc/i2c.h>
  10
  11 #include "panel.h"
  12
  13 #define ANX7625_I2C_BUS 4
  14
  15 static struct panel_serializable_data anx7625_data = {
  16         .init = { PANEL_END },
  17 };
  18
  19 static void dummy_power_on(void)
  20 {
  21         /*
  22          * The panel has been already powered on when getting panel information
  23          * so we should do nothing here.
  24          */
  25 }
  26
  27 static void start_anx7625(void)
  28 {
  29         if (anx7625_dp_start(ANX7625_I2C_BUS, &anx7625_data.edid) < 0)
  30                 printk(BIOS_ERR, "Can't start display via ANX7625.\n");
  31 }
  32
  33 static struct panel_description anx7625_panel = {
  34         .s = &anx7625_data,
  35         .orientation = LB_FB_ORIENTATION_NORMAL,
  36         .power_on = dummy_power_on,
  37         .post_power_on = start_anx7625,
  38 };
  39
  40 static void power_on_anx7625(void)
  41 {
  42         /* Disable backlight before turning on bridge */
  43         gpio_output(GPIO(PERIPHERAL_EN13), 0);
  44         gpio_output(GPIO(DISP_PWM), 0);
  45
  46         /* Turn on bridge */
  47         gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 0);
  48         gpio_output(GPIO_PP1200_MIPIBRDG_EN, 1);
  49         gpio_output(GPIO_VDDIO_MIPIBRDG_EN, 1);
  50         gpio_output(GPIO_PP1800_LCM_EN, 1);
  51         mdelay(2);
  52         gpio_output(GPIO_MIPIBRDG_PWRDN_L_1V8, 1);
  53         mdelay(10);
  54         gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 1);
  55         gpio_output(GPIO_PP3300_LCM_EN, 1);
  56 }
  57
  58 struct panel_description *get_panel_description(int panel_id)
  59 {
  60         /* To read panel EDID, we have to first power on anx7625. */
  61         power_on_anx7625();
  62
  63         mtk_i2c_bus_init(ANX7625_I2C_BUS);
  64
  65         if (anx7625_init(ANX7625_I2C_BUS)) {
  66                 printk(BIOS_ERR, "Can't init ANX7625 bridge.\n");
  67                 return NULL;
  68         }
  69
  70         if (anx7625_dp_get_edid(ANX7625_I2C_BUS, &anx7625_data.edid)) {
  71                 printk(BIOS_ERR, "Can't get panel's edid.\n");
  72                 return NULL;
  73         }
  74         return &anx7625_panel;
  75 }
  76
  77 void mtk_dsi_override_phy_timing(struct mtk_phy_timing *timing)
  78 {
  79         timing->da_hs_trail += 9;
  80 }