/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #include #include #include #include "display.h" #include "gpio.h" void aw37503_init(unsigned int bus) { i2c_write_field(bus, PMIC_AW37503_SLAVE, 0x00, 0x14, 0x1F, 0); i2c_write_field(bus, PMIC_AW37503_SLAVE, 0x01, 0x14, 0x1F, 0); i2c_write_field(bus, PMIC_AW37503_SLAVE, 0x21, 0x4C, 0xFF, 0); i2c_write_field(bus, PMIC_AW37503_SLAVE, 0x03, 0x43, 0xFF, 0); i2c_write_field(bus, PMIC_AW37503_SLAVE, 0x21, 0x00, 0xFF, 0); } bool is_pmic_aw37503(unsigned int bus) { u8 vendor_id; return (!i2c_read_field(bus, PMIC_AW37503_SLAVE, 0x04, &vendor_id, 0x0F, 0) && vendor_id == 0x01); } 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); /* For staryu variants, GPIO_EN_PP3300_DISP_X is controlled in mipi_panel_power_on() */ if (!CONFIG(BOARD_GOOGLE_STARYU_COMMON)) 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; }