| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <boardid.h> |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <edid.h> |
| #include <gpio.h> |
| #include <soc/ddp.h> |
| #include <soc/dsi.h> |
| #include <soc/gpio_common.h> |
| #include <soc/mtcmos.h> |
| |
| #include "display.h" |
| #include "gpio.h" |
| |
| static void backlight_control(void) |
| { |
| /* Disable backlight before turning on bridge */ |
| gpio_output(GPIO_AP_EDP_BKLTEN, 0); |
| gpio_output(GPIO_BL_PWM_1V8, 0); |
| gpio_output(GPIO_EN_PP3300_DISP_X, 1); |
| } |
| |
| struct panel_description *get_panel_from_cbfs(struct panel_description *desc) |
| { |
| char cbfs_name[64]; |
| static union { |
| u8 raw[4 * 1024]; |
| struct panel_serializable_data s; |
| } buffer; |
| |
| if (!desc->name) |
| return NULL; |
| |
| snprintf(cbfs_name, sizeof(cbfs_name), "panel-%s", desc->name); |
| if (cbfs_load(cbfs_name, buffer.raw, sizeof(buffer))) |
| 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) |
| { |
| if (CONFIG(BOARD_GOOGLE_KINGLER_COMMON)) |
| if (CONFIG(BOARD_GOOGLE_STEELIX) && board_id() < 2) |
| return get_ps8640_description(); |
| else |
| return get_anx7625_description(); |
| else if (CONFIG(BOARD_GOOGLE_KRABBY_COMMON)) |
| return get_ps8640_description(); |
| else if (CONFIG(BOARD_GOOGLE_STARYU_COMMON)) |
| return get_panel_description(); |
| else |
| return NULL; |
| } |
| |
| int configure_display(void) |
| { |
| /* Set up backlight control pins as output pin and power-off by default */ |
| backlight_control(); |
| |
| const struct panel_description *panel = get_active_panel(); |
| |
| if (!panel) |
| return -1; |
| |
| printk(BIOS_INFO, "%s: Starting display init\n", __func__); |
| |
| if (panel->power_on) |
| panel->power_on(); |
| |
| struct edid edid = panel->s->edid; |
| const char *name = edid.ascii_string; |
| if (name[0] == '\0') |
| name = "unknown name"; |
| printk(BIOS_INFO, "%s: '%s %s' %dx%d@%dHz\n", __func__, |
| edid.manufacturer_name, name, edid.mode.ha, edid.mode.va, |
| edid.mode.refresh); |
| |
| mtcmos_display_power_on(); |
| mtcmos_protect_display_bus(); |
| |
| 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 | |
| MIPI_DSI_MODE_EOT_PACKET); |
| |
| 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 -1; |
| } |
| |
| if (panel->post_power_on && panel->post_power_on(BRIDGE_I2C, &edid) < 0) { |
| printk(BIOS_ERR, "%s: Failed to post power on bridge\n", __func__); |
| return -1; |
| } |
| |
| mtk_ddp_mode_set(&edid); |
| struct fb_info *info = fb_new_framebuffer_info_from_edid(&edid, |
| (uintptr_t)0); |
| if (info) |
| fb_set_orientation(info, panel->orientation); |
| |
| return 0; |
| } |