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/*
* 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 <console/console.h>
#include <delay.h>
#include <drivers/parade/ps8640/ps8640.h>
#include <edid.h>
#include <gpio.h>
#include <soc/i2c.h>
#include <string.h>
#include "panel.h"
static void power_on_ps8640(void)
{
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_description ps8640_panel = {
.power_on = dummy_power_on,
.orientation = LB_FB_ORIENTATION_NORMAL,
.init = { INIT_END_CMD },
};
struct panel_description *get_panel_description(int panel_id)
{
static char mode_name[64];
/* 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_panel.edid;
if (ps8640_get_edid(i2c_bus, i2c_addr, edid)) {
printk(BIOS_ERR, "Can't get panel's edid\n");
return NULL;
}
/* TODO(hungte) Move this to ps8640_get_edid */
snprintf(mode_name, sizeof(mode_name), "%dx%d@%dHz", edid->x_resolution,
edid->y_resolution, edid->mode.refresh);
ps8640_panel.edid.mode.name = mode_name;
return &ps8640_panel;
}
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