From 8eef3bf3ca27e8a79862422fe9ee0c505b0567cc Mon Sep 17 00:00:00 2001 From: Hung-Te Lin Date: Tue, 12 Nov 2019 15:04:26 +0800 Subject: mb/google/kukui: Support panels using ANX7625 For Kukui followers using ANX7625 eDP bridge to access panel. BUG=b:140132295 TEST=make # board = kukui Change-Id: I7dc9c68d076fd0ba4e963cde9414d25c17b332cb Signed-off-by: Hung-Te Lin Reviewed-on: https://review.coreboot.org/c/coreboot/+/36767 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/mainboard/google/kukui/panel_anx7625.c | 79 ++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 src/mainboard/google/kukui/panel_anx7625.c (limited to 'src/mainboard/google/kukui/panel_anx7625.c') diff --git a/src/mainboard/google/kukui/panel_anx7625.c b/src/mainboard/google/kukui/panel_anx7625.c new file mode 100644 index 0000000000..b6a57e4c14 --- /dev/null +++ b/src/mainboard/google/kukui/panel_anx7625.c @@ -0,0 +1,79 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "panel.h" + + +static void power_on_anx7625(void) +{ + gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 0); + gpio_output(GPIO_PP1200_MIPIBRDG_EN, 1); + gpio_output(GPIO_VDDIO_MIPIBRDG_EN, 1); + gpio_output(GPIO_PP1800_LCM_EN, 1); + mdelay(2); + gpio_output(GPIO_MIPIBRDG_PWRDN_L_1V8, 1); + mdelay(10); + 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 anx7625_data = { + .orientation = LB_FB_ORIENTATION_NORMAL, + .init = { INIT_END_CMD }, +}; + +static struct panel_description anx7625_panel = { + .s = &anx7625_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 anx7625. */ + power_on_anx7625(); + + u8 i2c_bus = 4; + mtk_i2c_bus_init(i2c_bus); + + if (anx7625_init(i2c_bus)) { + printk(BIOS_ERR, "Can't init ANX7625 bridge.\n"); + return NULL; + } + struct edid *edid = &anx7625_data.edid; + if (anx7625_dp_get_edid(i2c_bus, edid)) { + printk(BIOS_ERR, "Can't get panel's edid.\n"); + return NULL; + } + if (anx7625_dp_start(i2c_bus, edid) < 0) { + printk(BIOS_ERR, "Can't start display via ANX7625.\n"); + return NULL; + } + return &anx7625_panel; +} -- cgit v1.2.3