/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include enum { CODEC_I2C_BUS = 0, EXT_BUCK_I2C_BUS = 1, }; static void configure_ext_buck(void) { mtk_i2c_bus_init(EXT_BUCK_I2C_BUS); switch (board_id() + CONFIG_BOARD_ID_ADJUSTMENT) { case 3: case 4: /* rev-3 and rev-4 use mt6311 as external buck */ gpio_output(GPIO(EINT15), 1); udelay(500); mt6311_probe(EXT_BUCK_I2C_BUS); break; case 2: default: /* rev-2 and rev-5 use da9212 as external buck */ mt6391_gpio_output(MT6391_KP_ROW3, 1); /* DA9212_IC_EN */ mt6391_gpio_output(MT6391_KP_ROW4, 1); /* DA9212_EN_A */ udelay(500); /* add 500us delay for powering on da9212 */ da9212_probe(EXT_BUCK_I2C_BUS); break; } } static void configure_touchscreen(void) { /* Pull low reset gpio for 500us and then pull high */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT >= 7) { gpio_output(GPIO(PCM_SYNC), 0); udelay(500); gpio_output(GPIO(PCM_SYNC), 1); } } static void configure_audio(void) { mtcmos_audio_power_on(); /* vgp1 set to 1.8V */ mt6391_configure_ldo(LDO_VCAMD, LDO_1P8); /* delay 1ms for realtek's power sequence request */ mdelay(1); /* vcama set to 1.8V */ mt6391_configure_ldo(LDO_VCAMA, LDO_1P8); /* reset ALC5676 */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT < 5) gpio_output(GPIO(LCM_RST), 1); /* SoC I2S */ gpio_set_mode(GPIO(I2S0_LRCK), PAD_I2S0_LRCK_FUNC_I2S1_WS); gpio_set_mode(GPIO(I2S0_BCK), PAD_I2S0_BCK_FUNC_I2S1_BCK); gpio_set_mode(GPIO(I2S0_MCK), PAD_I2S0_MCK_FUNC_I2S1_MCK); gpio_set_mode(GPIO(I2S0_DATA0), PAD_I2S0_DATA0_FUNC_I2S1_DO_1); gpio_set_mode(GPIO(I2S0_DATA1), PAD_I2S0_DATA1_FUNC_I2S2_DI_2); /* codec ext MCLK ON */ mt6391_gpio_output(MT6391_KP_COL4, 1); switch (board_id() + CONFIG_BOARD_ID_ADJUSTMENT) { case 2: case 3: case 4: mt6391_gpio_output(MT6391_KP_COL5, 1); break; case 5: case 6: gpio_set_mode(GPIO(UCTS0), PAD_UCTS0_FUNC_I2S2_DI_1); mt6391_gpio_output(MT6391_KP_COL5, 1); break; default: break; } /* Init i2c bus Timing register for audio codecs */ mtk_i2c_bus_init(CODEC_I2C_BUS); /* set I2S clock to 48KHz */ mt_pll_set_aud_div(48 * KHz); } static void configure_usb(void) { setup_usb_host(); if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT > 3) { /* Type C port 0 Over current alert pin */ gpio_input_pullup(GPIO(MSDC3_DSL)); /* Enable USB3 type A port 0 5V load switch */ gpio_output(GPIO(CM2MCLK), 1); /* USB3 Type A port 0 power over current alert pin */ gpio_input_pullup(GPIO(CMPCLK)); /* Type C port 1 over current alert pin */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT < 7) gpio_input_pullup(GPIO(PCM_SYNC)); } if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT > 4 && board_id() + CONFIG_BOARD_ID_ADJUSTMENT < 7) { /* USB 2.0 type A port over current interrupt pin(low active) */ gpio_input_pullup(GPIO(UCTS2)); /* USB 2.0 type A port BC1.2 STATUS(low active) */ gpio_input_pullup(GPIO(AUD_DAT_MISO)); } } static void configure_usb_hub(void) { /* set USB hub reset pin (low active) to high */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT > 4) gpio_output(GPIO(UTXD3), 1); } /* Setup backlight control pins as output pin and power-off by default */ static void configure_backlight(void) { /* Configure PANEL_LCD_POWER_EN */ switch (board_id() + CONFIG_BOARD_ID_ADJUSTMENT) { case 3: gpio_output(GPIO(UCTS2), 0); break; case 4: gpio_output(GPIO(SRCLKENAI), 0); break; default: gpio_output(GPIO(UTXD2), 0); break; } gpio_output(GPIO(DISP_PWM0), 0); /* DISP_PWM0 */ gpio_output(GPIO(PCM_TX), 0); /* PANEL_POWER_EN */ } static void configure_display(void) { /* board from Rev2 */ gpio_output(GPIO(CMMCLK), 1); /* PANEL_3V3_ENABLE */ /* vgp2 set to 3.3V for ps8640 */ mt6391_configure_ldo(LDO_VGP2, LDO_3P3); gpio_output(GPIO(URTS0), 0); /* PS8640_SYSRSTN */ /* PS8640_1V2_ENABLE */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT == 4) gpio_output(GPIO(SRCLKENAI2), 1); else gpio_output(GPIO(URTS2), 1); /* delay 2ms for vgp2 and PS8640_1V2_ENABLE stable */ mdelay(2); /* PS8640_PDN */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT > 4) gpio_output(GPIO(LCM_RST), 1); else gpio_output(GPIO(UCTS0), 1); gpio_output(GPIO(PCM_CLK), 1); /* PS8640_MODE_CONF */ gpio_output(GPIO(URTS0), 1); /* PS8640_SYSRSTN */ /* for level shift(1.8V to 3.3V) on */ udelay(100); } static int read_edid_from_ps8640(struct edid *edid) { u8 i2c_bus, i2c_addr; if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT > 6) { i2c_bus = 0; i2c_addr = 0x8; } else { i2c_bus = 4; i2c_addr = 0x18; } mtk_i2c_bus_init(i2c_bus); ps8640_init(i2c_bus, i2c_addr); if (ps8640_get_edid(i2c_bus, i2c_addr, edid)) { printk(BIOS_ERR, "Can't get panel's edid\n"); return -1; } return 0; } static void display_startup(void) { struct edid edid; int ret; u32 mipi_dsi_flags; if (read_edid_from_ps8640(&edid) < 0) return; mipi_dsi_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; edid_set_framebuffer_bits_per_pixel(&edid, 32, 0); mtk_ddp_init(); ret = mtk_dsi_init(mipi_dsi_flags, MIPI_DSI_FMT_RGB888, 4, &edid, NULL); if (ret < 0) { printk(BIOS_ERR, "dsi init fail\n"); return; } mtk_ddp_mode_set(&edid); fb_new_framebuffer_info_from_edid(&edid, (uintptr_t)0); } static void mainboard_init(struct device *dev) { /* TP_SHIFT_EN: Enables the level shifter for I2C bus 4 (TPAD), which * also contains the PS8640 eDP bridge and the USB hub. */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT < 5) mt6391_gpio_output(MT6391_KP_ROW2, 1); /* Config SD card detection pin */ gpio_input_pullup(GPIO(EINT1)); /* SD_DET */ configure_audio(); /* fix dsi lp mode is half voltage attenuation */ mtk_dsi_pin_drv_ctrl(); if (display_init_required()) { mtcmos_display_power_on(); configure_backlight(); configure_display(); display_startup(); } else { printk(BIOS_INFO, "Skipping display init.\n"); } configure_usb(); configure_usb_hub(); configure_ext_buck(); configure_touchscreen(); } static void mainboard_enable(struct device *dev) { dev->ops->init = &mainboard_init; } struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, };