/* * Copyright (c) 2024, ArtInChip Technology Co., Ltd * * SPDX-License-Identifier: Apache-2.0 */ #include "panel_com.h" #define ST77922_RESET "PD.3" #define ST77922_CS "PC.6" #define ST77922_SCL "PC.7" #define ST77922_SDI "PC.5" static struct gpio_desc reset_gpio; static void panel_gpio_init(void) { panel_get_gpio(&reset_gpio, ST77922_RESET); panel_gpio_set_value(&reset_gpio, 1); aic_delay_ms(100); panel_gpio_set_value(&reset_gpio, 0); aic_delay_ms(100); panel_gpio_set_value(&reset_gpio, 1); aic_delay_ms(100); } static int panel_enable(struct aic_panel *panel) { panel_gpio_init(); panel_spi_device_emulation(ST77922_CS, ST77922_SDI, ST77922_SCL); panel_spi_send_seq(0x28); panel_spi_send_seq(0x10); aic_delay_ms(120); panel_spi_send_seq(0xD0, 0x02); /* ======================CMD2====================== */ panel_spi_send_seq(0xF1, 0x00); panel_spi_send_seq(0x60, 0x00, 0x00, 0x00); panel_spi_send_seq(0x65, 0x80); panel_spi_send_seq(0x66, 0x02, 0x3F); panel_spi_send_seq(0xBE, 0x24, 0x00, 0xED); /* VFP, VBP, Gate line */ panel_spi_send_seq(0x70, 0x11, 0x9D, 0x11, 0xE0, 0xE0, 0x00, 0x08, 0x75, 0x00, 0x00, 0x00, 0x1A); /* video mode */ panel_spi_send_seq(0x71, 0xD3); panel_spi_send_seq(0x7B, 0x00, 0x08, 0x08); panel_spi_send_seq(0x80, 0x55, 0x62, 0x2F, 0x17, 0xF0, 0x52, 0x70, 0xD2, 0x52, 0x62, 0xEA); panel_spi_send_seq(0x81, 0x26, 0x52, 0x72, 0x27); panel_spi_send_seq(0x84, 0x92, 0x25); panel_spi_send_seq(0x86, 0xC6, 0x04, 0xB1, 0x02, 0x58, 0x12, 0x58, 0x10, 0x13, 0x01, 0xA5, 0x00, 0xA5, 0xA5); panel_spi_send_seq(0x87, 0x10, 0x10, 0x58, 0x00, 0x02, 0x3A); panel_spi_send_seq(0x88, 0x00, 0x00, 0x2C, 0x10, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x06); panel_spi_send_seq(0x89, 0x00, 0x00, 0x00); panel_spi_send_seq(0x8A, 0x13, 0x00, 0x2C, 0x00, 0x00, 0x2C, 0x10, 0x10, 0x00, 0x3E, 0x19); /* VGL Pump */ panel_spi_send_seq(0x8B, 0x15, 0xB1, 0xB1, 0x44, 0x96, 0x2C, 0x10, 0x97, 0x8E); /* VGH Pump */ panel_spi_send_seq(0x8C, 0x1D, 0xB1, 0xB1, 0x44, 0x96, 0x2C, 0x10, 0x50, 0x0F, 0x01, 0xC5, 0x12, 0x09); panel_spi_send_seq(0x8D, 0x0C); panel_spi_send_seq(0x8E, 0x33, 0x01, 0x0C, 0x13, 0x01, 0x01); panel_spi_send_seq(0x90, 0x00, 0x44, 0x55, 0x7A, 0x00, 0x40, 0x40, 0x3F, 0x3F); panel_spi_send_seq(0x91, 0x00, 0x44, 0x55, 0x7B, 0x00, 0x40, 0x7F, 0x3F, 0x3F); panel_spi_send_seq(0x92, 0x00, 0x44, 0x55, 0x2F, 0x00, 0x30, 0x00, 0x05, 0x3F, 0x3F); panel_spi_send_seq(0x93, 0x00, 0x43, 0x11, 0x3F, 0x00, 0x3F, 0x00, 0x05, 0x3F, 0x3F); panel_spi_send_seq(0x94, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); panel_spi_send_seq(0x95, 0x9D, 0x1D, 0x00, 0x00, 0xFF); panel_spi_send_seq(0x96, 0x44, 0x44, 0x07, 0x16, 0x3A, 0x3B, 0x01, 0x00, 0x3F, 0x3F, 0x00, 0x40); panel_spi_send_seq(0x97, 0x44, 0x44, 0x25, 0x34, 0x3C, 0x3D, 0x1F, 0x1E, 0x3F, 0x3F, 0x00, 0x40); panel_spi_send_seq(0xBA, 0x55, 0x3F, 0x3F, 0x3F, 0x3F); panel_spi_send_seq(0x9A, 0x40, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00); panel_spi_send_seq(0x9B, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00); panel_spi_send_seq(0x9C, 0x40, 0x12, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00); panel_spi_send_seq(0x9D, 0x80, 0x53, 0x00, 0x00, 0x00, 0x80, 0x64, 0x01); panel_spi_send_seq(0x9E, 0x53, 0x00, 0x00, 0x00, 0x80, 0x64, 0x01); panel_spi_send_seq(0x9F, 0xA0, 0x09, 0x00, 0x57); panel_spi_send_seq(0xB3, 0x00, 0x30, 0x0F, 0x00, 0x00, 0x00, 0x00); panel_spi_send_seq(0xB4, 0x10, 0x09, 0x0B, 0x02, 0x00, 0x19, 0x18, 0x13, 0x1E, 0x1D, 0x1C, 0x1E); panel_spi_send_seq(0xB5, 0x08, 0x12, 0x03, 0x0A, 0x19, 0x01, 0x11, 0x18, 0x1D, 0x1E, 0x1E, 0x1C); panel_spi_send_seq(0xB6, 0xFF, 0xFF, 0x00, 0x07, 0xFF, 0x0B, 0xFF); /* GammaP */ panel_spi_send_seq(0xB7, 0x00, 0x0B, 0x12, 0x0A, 0x0B, 0x06, 0x37, 0x00, 0x02, 0x4D, 0x08, 0x14, 0x14, 0x30, 0x36, 0x0F); /* GammaN */ panel_spi_send_seq(0xB8, 0x00, 0x0B, 0x11, 0x09, 0x09, 0x06, 0x37, 0x06, 0x05, 0x4D, 0x08, 0x13, 0x13, 0x2F, 0x36, 0x0F); panel_spi_send_seq(0xB9, 0x23, 0x23); panel_spi_send_seq(0xBB, 0x00, 0x00); /* VGHP/VGLP */ panel_spi_send_seq(0xBF, 0x0F, 0x13, 0x13, 0x09, 0x09, 0x09); /* ======================CMD3====================== */ panel_spi_send_seq(0xF2, 0x00); /* VOP = 5v */ panel_spi_send_seq(0x73, 0x04, 0xBA, 0x12, 0x5E, 0x55); panel_spi_send_seq(0x77, 0x6B, 0x5B, 0xFD, 0xC3, 0xC5); panel_spi_send_seq(0x7A, 0x15, 0x27); panel_spi_send_seq(0x7B, 0x04, 0x57); panel_spi_send_seq(0x7E, 0x01, 0x0E); panel_spi_send_seq(0xBF, 0x36); /* VMF */ panel_spi_send_seq(0xE3, 0x40, 0x40); /* ======================CMD1====================== */ panel_spi_send_seq(0xF0, 0x00); panel_spi_send_seq(0x21); panel_spi_send_seq(0x11); aic_delay_ms(120); panel_spi_send_seq(0x29); panel_spi_send_seq(0x35, 0x00); panel_di_enable(panel, 0); panel_de_timing_enable(panel, 0); panel_backlight_enable(panel, 0); return 0; } static struct aic_panel_funcs st77922_funcs = { .disable = panel_default_disable, .unprepare = panel_default_unprepare, .prepare = panel_default_prepare, .enable = panel_enable, .register_callback = panel_register_callback, }; static struct display_timing st77922_timing = { .pixelclock = 20000000, .hactive = 480, .hfront_porch = 100, .hback_porch = 40, .hsync_len = 2, .vactive = 480, .vfront_porch = 117, .vback_porch = 6, .vsync_len = 2, }; static struct panel_rgb rgb = { .mode = SRGB, .format = SRGB_8BIT, .clock_phase = DEGREE_0, .data_order = RGB, .data_mirror = 0, }; struct aic_panel rgb_st77922 = { .name = "panel-st77922", .timings = &st77922_timing, .funcs = &st77922_funcs, .rgb = &rgb, .connector_type = AIC_RGB_COM, };