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/*
* This file is part of the coreboot project.
*
* Copyright 2018 MediaTek 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 <assert.h>
#include <boardid.h>
#include <bootmode.h>
#include <cbfs.h>
#include <console/console.h>
#include <delay.h>
#include <device/device.h>
#include <edid.h>
#include <gpio.h>
#include <soc/ddp.h>
#include <soc/dsi.h>
#include <soc/gpio.h>
#include <soc/mmu_operations.h>
#include <soc/mtcmos.h>
#include <soc/usb.h>
#include <string.h>
#include "panel.h"
static void configure_emmc(void)
{
const gpio_t emmc_pin[] = {
GPIO(MSDC0_DAT0), GPIO(MSDC0_DAT1),
GPIO(MSDC0_DAT2), GPIO(MSDC0_DAT3),
GPIO(MSDC0_DAT4), GPIO(MSDC0_DAT5),
GPIO(MSDC0_DAT6), GPIO(MSDC0_DAT7),
GPIO(MSDC0_CMD), GPIO(MSDC0_RSTB),
};
for (size_t i = 0; i < ARRAY_SIZE(emmc_pin); i++)
gpio_set_pull(emmc_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
}
static void configure_usb(void)
{
setup_usb_host();
}
static void configure_audio(void)
{
/* Audio PWR*/
mtcmos_audio_power_on();
/* SoC I2S */
gpio_set_mode(GPIO(CAM_RST0), PAD_CAM_RST0_FUNC_I2S2_LRCK);
gpio_set_mode(GPIO(CAM_PDN1), PAD_CAM_PDN1_FUNC_I2S2_BCK);
gpio_set_mode(GPIO(CAM_PDN0), PAD_CAM_PDN0_FUNC_I2S2_MCK);
gpio_set_mode(GPIO(EINT3), PAD_EINT3_FUNC_I2S3_DO);
}
/* Default implementation for boards without panels defined yet. */
struct panel_description __weak *get_panel_description(int panel_id)
{
printk(BIOS_ERR, "%s: ERROR: No panels defined for board: %s.\n",
__func__, CONFIG_MAINBOARD_PART_NUMBER);
return NULL;
}
/* Set up backlight control pins as output pin and power-off by default */
static void configure_panel_backlight(void)
{
gpio_output(GPIO(PERIPHERAL_EN13), 0);
gpio_output(GPIO(DISP_PWM), 0);
}
static void power_on_panel(struct panel_description *panel)
{
if (panel->power_on) {
panel->power_on();
return;
}
/* Default power sequence for most panels. */
gpio_output(GPIO_LCM_RST_1V8, 0);
gpio_output(GPIO_PPVARP_LCD_EN, 1);
gpio_output(GPIO_PPVARN_LCD_EN, 1);
gpio_output(GPIO_PP1800_LCM_EN, 1);
gpio_output(GPIO_PP3300_LCM_EN, 1);
mdelay(6);
gpio_output(GPIO_LCM_RST_1V8, 1);
mdelay(6);
}
struct panel_description *get_panel_from_cbfs(struct panel_description *desc)
{
/* The CBFS name will be panel-{MANUFACTURER}-${PANEL_NAME},
* where MANUFACTURER is 3 characters and PANEL_NAME is usually
* 13 characters.
*/
char cbfs_name[64];
static union {
u8 raw[4 * 1024]; /* Most panels only need < 2K. */
struct panel_serializable_data s;
} buffer;
if (!desc->name)
return NULL;
snprintf(cbfs_name, sizeof(cbfs_name), "panel-%s", desc->name);
if (cbfs_boot_load_file(cbfs_name, buffer.raw, sizeof(buffer),
CBFS_TYPE_STRUCT))
desc->s = &buffer.s;
else
printk(BIOS_ERR, "Missing %s in CBFS.\n", cbfs_name);
return desc->s ? desc : NULL;
}
static struct panel_description *get_active_panel(void)
{
/* TODO(hungte) Create a dedicated panel_id() in board_id.c */
int panel_id = sku_id() >> 4;
struct panel_description *panel = get_panel_description(panel_id);
if (!panel) {
printk(BIOS_ERR, "%s: Panel %d is not supported.\n",
__func__, panel_id);
return NULL;
}
assert(panel->s);
const struct edid *edid = &panel->s->edid;
const char *name = edid->ascii_string;
if (name[0] == '\0')
name = "unknown name";
printk(BIOS_INFO, "%s: Found ID %d: '%s %s' %dx%d@%dHz\n", __func__,
panel_id, edid->manufacturer_name, name, edid->mode.ha,
edid->mode.va, edid->mode.refresh);
return panel;
}
static bool configure_display(void)
{
struct panel_description *panel = get_active_panel();
if (!panel)
return false;
mtcmos_display_power_on();
mtcmos_protect_display_bus();
configure_panel_backlight();
power_on_panel(panel);
struct edid *edid = &panel->s->edid;
edid_set_framebuffer_bits_per_pixel(edid, 32, 0);
mtk_ddp_init();
u32 mipi_dsi_flags = (MIPI_DSI_MODE_VIDEO |
MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
MIPI_DSI_MODE_LPM);
if (mtk_dsi_init(mipi_dsi_flags, MIPI_DSI_FMT_RGB888, 4, edid,
panel->s->init) < 0) {
printk(BIOS_ERR, "%s: Failed in DSI init.\n", __func__);
return false;
}
mtk_ddp_mode_set(edid);
set_vbe_mode_info_valid(edid, 0);
set_vbe_framebuffer_orientation(panel->s->orientation);
return true;
}
static void mainboard_init(struct device *dev)
{
if (display_init_required()) {
printk(BIOS_INFO, "%s: Starting display init.\n", __func__);
if (!configure_display())
printk(BIOS_ERR, "%s: Failed to init display.\n",
__func__);
} else {
printk(BIOS_INFO, "%s: Skipped display init.\n", __func__);
}
configure_emmc();
configure_usb();
configure_audio();
}
static void mainboard_enable(struct device *dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.name = CONFIG_MAINBOARD_PART_NUMBER,
.enable_dev = mainboard_enable,
};
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