| /* |
| * 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, |
| }; |