| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <edid.h> |
| #include <framebuffer_info.h> |
| #include <soc/ddp.h> |
| #include <soc/display.h> |
| #include <soc/dptx.h> |
| #include <soc/dsi.h> |
| #include <soc/mtcmos.h> |
| #include <string.h> |
| |
| static struct panel_serializable_data *get_mipi_cmd_from_cbfs(struct panel_description *desc) |
| { |
| /* |
| * The CBFS file name is 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) { |
| printk(BIOS_ERR, "Missing panel CBFS file name.\n"); |
| return NULL; |
| } |
| |
| snprintf(cbfs_name, sizeof(cbfs_name), "panel-%s", desc->name); |
| if (cbfs_load(cbfs_name, buffer.raw, sizeof(buffer))) |
| return &buffer.s; |
| |
| printk(BIOS_ERR, "Missing %s in CBFS.\n", cbfs_name); |
| return NULL; |
| } |
| |
| __weak int mtk_edp_init(struct edid *edid) |
| { |
| printk(BIOS_WARNING, "%s: Not supported\n", __func__); |
| return -1; |
| } |
| |
| __weak int mtk_dsi_init(u32 mode_flags, u32 format, u32 lanes, |
| const struct edid *edid, const u8 *init_commands) |
| { |
| printk(BIOS_WARNING, "%s: Not supported\n", __func__); |
| return -1; |
| } |
| |
| int mtk_display_init(void) |
| { |
| struct edid edid; |
| struct fb_info *info; |
| const char *name; |
| struct panel_description *panel = get_active_panel(); |
| |
| if (!panel || panel->disp_path == DISP_PATH_NONE) { |
| printk(BIOS_ERR, "%s: Failed to get the active panel\n", __func__); |
| return -1; |
| } |
| |
| printk(BIOS_INFO, "%s: Starting display initialization\n", __func__); |
| |
| mtcmos_display_power_on(); |
| mtcmos_protect_display_bus(); |
| |
| if (panel->configure_backlight) |
| panel->configure_backlight(); |
| if (panel->power_on) |
| panel->power_on(); |
| |
| mtk_ddp_init(); |
| |
| if (panel->disp_path == DISP_PATH_EDP) { |
| mdelay(200); |
| if (mtk_edp_init(&edid) < 0) { |
| printk(BIOS_ERR, "%s: Failed to initialize eDP\n", __func__); |
| return -1; |
| } |
| } else { |
| |
| struct panel_serializable_data *mipi_data = NULL; |
| |
| if (panel->get_edid) { |
| if (panel->get_edid(&edid) < 0) |
| return -1; |
| } else { |
| mipi_data = get_mipi_cmd_from_cbfs(panel); |
| if (!mipi_data) |
| return -1; |
| edid = mipi_data->edid; |
| } |
| |
| 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, |
| mipi_data ? mipi_data->init : NULL) < 0) { |
| printk(BIOS_ERR, "%s: Failed in DSI init\n", __func__); |
| return -1; |
| } |
| |
| if (panel->post_power_on && panel->post_power_on(&edid) < 0) { |
| printk(BIOS_ERR, "%s: Failed to post power on bridge\n", __func__); |
| return -1; |
| } |
| } |
| |
| 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); |
| |
| edid_set_framebuffer_bits_per_pixel(&edid, 32, 0); |
| |
| mtk_ddp_mode_set(&edid, panel->disp_path); |
| info = fb_new_framebuffer_info_from_edid(&edid, (uintptr_t)0); |
| if (info) |
| fb_set_orientation(info, panel->orientation); |
| |
| return 0; |
| } |