/* 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; }