/* drivers/video/sunxi/disp2/disp/lcd/ST7796S.c * * Copyright (c) 2017 Allwinnertech Co., Ltd. * Author: zhengxiaobin * * he0801a-068 panel driver * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * [lcd0] * lcd_used = 1 * lcd_driver_name = "st7796s" * lcd_bl_0_percent = 0 * lcd_bl_40_percent = 23 * lcd_bl_100_percent = 100 * lcd_backlight = 100 * lcd_if = 4 * lcd_x = 240 * lcd_y = 432 * lcd_width = 52 * lcd_height = 52 * lcd_dclk_freq = 18 * lcd_pwm_used = 1 * lcd_pwm_ch = 0 * lcd_pwm_freq = 50000 * lcd_pwm_pol = 1 * lcd_pwm_max_limit = 255 * lcd_hbp = 96 * lcd_ht = 480 * lcd_hspw = 2 * lcd_vbp = 21 * lcd_vt = 514 * lcd_vspw = 2 * lcd_dsi_if = 1 * lcd_dsi_lane = 1 * lcd_dsi_format = 0 * lcd_dsi_te = 1 * lcd_dsi_eotp = 0 * lcd_frm = 0 * lcd_io_phase = 0x0000 * lcd_hv_clk_phase = 0 * lcd_hv_sync_polarity= 0 * lcd_gamma_en = 0 * lcd_bright_curve_en = 0 * lcd_cmap_en = 0 * lcdgamma4iep = 22 * lcd_bl_en = port:PB03<1><0><1> * lcd_power = "axp233_dc1sw" * lcd_power1 = "axp233_eldo1" * lcd_gpio_0 = port:PB02<1><0><0> * lcd_vsync = port:PD21<2><0><3> */ #include "st7796s.h" static void lcd_power_on(u32 sel); static void lcd_power_off(u32 sel); static void lcd_bl_open(u32 sel); static void lcd_bl_close(u32 sel); static void lcd_panel_init(u32 sel); static void lcd_panel_exit(u32 sel); #define panel_reset(sel, val) sunxi_lcd_gpio_set_value(sel, 0, val) static void lcd_cfg_panel_info(struct panel_extend_para *info) { u32 i = 0, j = 0; u32 items; u8 lcd_gamma_tbl[][2] = { {0, 0}, {15, 15}, {30, 30}, {45, 45}, {60, 60}, {75, 75}, {90, 90}, {105, 105}, {120, 120}, {135, 135}, {150, 150}, {165, 165}, {180, 180}, {195, 195}, {210, 210}, {225, 225}, {240, 240}, {255, 255}, }; u32 lcd_cmap_tbl[2][3][4] = { { {LCD_CMAP_G0, LCD_CMAP_B1, LCD_CMAP_G2, LCD_CMAP_B3}, {LCD_CMAP_B0, LCD_CMAP_R1, LCD_CMAP_B2, LCD_CMAP_R3}, {LCD_CMAP_R0, LCD_CMAP_G1, LCD_CMAP_R2, LCD_CMAP_G3}, }, { {LCD_CMAP_B3, LCD_CMAP_G2, LCD_CMAP_B1, LCD_CMAP_G0}, {LCD_CMAP_R3, LCD_CMAP_B2, LCD_CMAP_R1, LCD_CMAP_B0}, {LCD_CMAP_G3, LCD_CMAP_R2, LCD_CMAP_G1, LCD_CMAP_R0}, }, }; items = sizeof(lcd_gamma_tbl) / 2; for (i = 0; i < items - 1; i++) { u32 num = lcd_gamma_tbl[i + 1][0] - lcd_gamma_tbl[i][0]; for (j = 0; j < num; j++) { u32 value = 0; value = lcd_gamma_tbl[i][1] + ((lcd_gamma_tbl[i + 1][1] - lcd_gamma_tbl[i][1]) * j) / num; info->lcd_gamma_tbl[lcd_gamma_tbl[i][0] + j] = (value << 16) + (value << 8) + value; } } info->lcd_gamma_tbl[255] = (lcd_gamma_tbl[items - 1][1] << 16) + (lcd_gamma_tbl[items - 1][1] << 8) + lcd_gamma_tbl[items - 1][1]; memcpy(info->lcd_cmap_tbl, lcd_cmap_tbl, sizeof(lcd_cmap_tbl)); } static s32 lcd_open_flow(u32 sel) { LCD_OPEN_FUNC(sel, lcd_power_on, 10); LCD_OPEN_FUNC(sel, lcd_panel_init, 10); LCD_OPEN_FUNC(sel, sunxi_lcd_tcon_enable, 50); LCD_OPEN_FUNC(sel, lcd_bl_open, 0); return 0; } static s32 lcd_close_flow(u32 sel) { LCD_CLOSE_FUNC(sel, lcd_bl_close, 0); LCD_CLOSE_FUNC(sel, lcd_panel_exit, 200); LCD_CLOSE_FUNC(sel, sunxi_lcd_tcon_disable, 0); LCD_CLOSE_FUNC(sel, lcd_power_off, 500); return 0; } static void lcd_power_on(u32 sel) { sunxi_lcd_pin_cfg(sel, 1); sunxi_lcd_power_enable(sel, 0); // sunxi_lcd_power_enable(sel, 1); sunxi_lcd_delay_ms(10); panel_reset(sel, 1); sunxi_lcd_delay_ms(50); panel_reset(sel, 0); sunxi_lcd_delay_ms(50); panel_reset(sel, 1); sunxi_lcd_delay_ms(50); } static void lcd_power_off(u32 sel) { sunxi_lcd_pin_cfg(sel, 0); sunxi_lcd_delay_ms(20); panel_reset(sel, 0); sunxi_lcd_delay_ms(5); sunxi_lcd_power_disable(sel, 0); } static void lcd_bl_open(u32 sel) { sunxi_lcd_pwm_enable(sel); sunxi_lcd_backlight_enable(sel); } static void lcd_bl_close(u32 sel) { sunxi_lcd_backlight_disable(sel); sunxi_lcd_pwm_disable(sel); } #define REGFLAG_DELAY 0XFF #define REGFLAG_END_OF_TABLE 0xFE /* END OF REGISTERS MARKER */ struct LCM_setting_table { u8 cmd; u32 count; u8 para_list[15]; }; static struct LCM_setting_table lcm_initialization_setting[] = { {0x11, 1, {0x00} }, {REGFLAG_DELAY, 50, {} }, {0x36, 1, {0x48} }, {0x35, 1, {0x00} },/*te on*/ {0x3a, 1, {0x77} },/*24bit/pixel*/ {0xf0, 1, {0xc3} }, {0xf0, 1, {0x96} }, {0xb4, 1, {0x01} }, {0xb6, 3, {0xa0, 0x02, 0x3b} }, {0xc1, 1, {0x1d} }, {0xc2, 1, {0xa7} }, {0xc5, 1, {0x23} }, {REGFLAG_DELAY, 1, {} }, {0xe8, 8, {0x40, 0x8a, 0x00, 0x00, 0x29, 0x19, 0xa5, 0x33} }, {0xe0, 14, { 0xf0, 0x03, 0x0a, 0x12, 0x15, 0x1d, 0x42, 0x44, 0x50, 0x28, 0x16, 0x15, 0x20, 0x21} }, {0xe1, 14, { 0xf0, 0x03, 0x0a, 0x12, 0x15, 0x1c, 0x42, 0x44, 0x52, 0x28, 0x16, 0x15, 0x20, 0x23} }, {REGFLAG_DELAY, 1, {} }, {0xf0, 1, {0x3c} }, {0xf0, 1, {0x69} }, {0x29, 1, {0x00} }, /* DSPON */ {REGFLAG_DELAY, 1, {} }, {REGFLAG_END_OF_TABLE, 0x00, {} } }; static void lcd_panel_init(u32 sel) { u32 i = 0; sunxi_lcd_dsi_clk_enable(sel); sunxi_lcd_delay_ms(100); for (i = 0;; i++) { if (lcm_initialization_setting[i].cmd == REGFLAG_END_OF_TABLE) break; else if (lcm_initialization_setting[i].cmd == REGFLAG_DELAY) sunxi_lcd_delay_ms(lcm_initialization_setting[i].count); else { dsi_dcs_wr(0, lcm_initialization_setting[i].cmd, lcm_initialization_setting[i].para_list, lcm_initialization_setting[i].count); } } } static void lcd_panel_exit(u32 sel) { sunxi_lcd_dsi_dcs_write_0para(sel, 0x28); sunxi_lcd_delay_ms(10); sunxi_lcd_dsi_dcs_write_0para(sel, 0x10); sunxi_lcd_delay_ms(10); } /*sel: 0:lcd0; 1:lcd1*/ static s32 lcd_user_defined_func(u32 sel, u32 para1, u32 para2, u32 para3) { return 0; } struct __lcd_panel st7796s_panel = { /* panel driver name, must mach the name of * lcd_drv_name in sys_config.fex */ .name = "st7796s", .func = { .cfg_panel_info = lcd_cfg_panel_info, .cfg_open_flow = lcd_open_flow, .cfg_close_flow = lcd_close_flow, .lcd_user_defined_func = lcd_user_defined_func, }, };