| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <boardid.h> |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <device/i2c_simple.h> |
| #include <edid.h> |
| #include <gpio.h> |
| #include <soc/gpio_common.h> |
| #include <string.h> |
| |
| #include "gpio.h" |
| #include "panel.h" |
| |
| int panel_pmic_reg_mask(u32 bus, u8 chip, u8 addr, u8 val, u8 mask) |
| { |
| u8 msg = 0; |
| |
| if (i2c_read_field(bus, chip, addr, &msg, 0xFF, 0) < 0) { |
| printk(BIOS_ERR, "Failed to read i2c: addr(%u)\n", addr); |
| return -1; |
| } |
| |
| msg &= ~mask; |
| msg |= val; |
| |
| return i2c_write_field(bus, chip, addr, msg, 0xFF, 0); |
| } |
| |
| static void 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; |
| } |
| |
| 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); |
| } |
| |
| struct panel_description *get_active_panel(void) |
| { |
| uint32_t active_panel_id = panel_id(); |
| |
| struct panel_description *panel = get_panel_description(active_panel_id); |
| if (!panel || panel->disp_path == DISP_PATH_NONE) { |
| printk(BIOS_ERR, "%s: Panel %u is not supported.\n", __func__, active_panel_id); |
| return NULL; |
| } |
| |
| /* For eDP, we will get edid after eDP initialization is done, so we return directly. */ |
| if (panel->disp_path == DISP_PATH_EDP) { |
| printk(BIOS_INFO, "%s: Use eDP as the display\n", __func__); |
| return panel; |
| } |
| |
| /* We need to find init cmds for MIPI panel from CBFS */ |
| get_mipi_cmd_from_cbfs(panel); |
| if (!panel->s) |
| return NULL; |
| |
| 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 %u: '%s %s' %dx%d@%dHz\n", __func__, |
| active_panel_id, edid->manufacturer_name, name, edid->mode.ha, |
| edid->mode.va, edid->mode.refresh); |
| } |
| return panel; |
| } |