T113 tina linux 适配 ili9488 屏幕 i80 16bit
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前言
在上一篇文章已经搞定了 T113 tina linux 移植 gpsp 模拟器 接下来适配屏幕驱动。
因为 GBA 原生分辨率是 240x160，所以屏幕选用的是 480x320 的 ili9488，正好可以整数倍缩放。初始化屏幕
先从 tina linux 自带的驱动中 copy 一份 st7789v_cpu 的代码，然后对照 ili9488 屏幕厂商提供的初始化代码做修改
完整代码/* * drivers/video/fbdev/sunxi/disp2/disp/lcd/ili9488_cpu.c * * Copyright (c) 2007-2018 Allwinnertech Co., Ltd. * Author: zhengxiaobin <zhengxiaobin@allwinnertech.com> * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * */ #include "ili9488_cpu.h" #define CPU_TRI_MODE #define DBG_INFO(format, args...) (printk("[ILI9488 LCD INFO] LINE:%04d-->%s:"format, __LINE__, __func__, ##args)) #define DBG_ERR(format, args...) (printk("[ILI9488 LCD ERR] LINE:%04d-->%s:"format, __LINE__, __func__, ##args)) #define panel_reset(val) sunxi_lcd_gpio_set_value(sel, 0, val) #define lcd_cs(val) sunxi_lcd_gpio_set_value(sel, 1, val) static void lcd_panel_ili9488_init(u32 sel, struct disp_panel_para *info); 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); static void LCD_cfg_panel_info(struct panel_extend_para *info) { #if 0 u32 i = 0, j = 0; u32 items; u8 lcd_gamma_tbl[][2] = { //{input value, corrected value} {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)); #endif } static s32 LCD_open_flow(u32 sel) { LCD_OPEN_FUNC(sel, LCD_power_on, 120); #ifdef CPU_TRI_MODE LCD_OPEN_FUNC(sel, LCD_panel_init, 100); LCD_OPEN_FUNC(sel, sunxi_lcd_tcon_enable, 50); #else LCD_OPEN_FUNC(sel, sunxi_lcd_tcon_enable, 100); LCD_OPEN_FUNC(sel, LCD_panel_init, 50); #endif LCD_OPEN_FUNC(sel, LCD_bl_open, 0); return 0; } static s32 LCD_close_flow(u32 sel) { LCD_CLOSE_FUNC(sel, LCD_bl_close, 20); #ifdef CPU_TRI_MODE LCD_CLOSE_FUNC(sel, sunxi_lcd_tcon_disable, 10); LCD_CLOSE_FUNC(sel, LCD_panel_exit, 50); #else LCD_CLOSE_FUNC(sel, LCD_panel_exit, 10); LCD_CLOSE_FUNC(sel, sunxi_lcd_tcon_disable, 10); #endif LCD_CLOSE_FUNC(sel, LCD_power_off, 0); return 0; } static void LCD_power_on(u32 sel) { /*config lcd_power pin to open lcd power0 */ sunxi_lcd_power_enable(sel, 0); sunxi_lcd_pin_cfg(sel, 1); } static void LCD_power_off(u32 sel) { /*lcd_cs, active low */ lcd_cs(1); sunxi_lcd_delay_ms(10); /*lcd_rst, active hight */ panel_reset(1); sunxi_lcd_delay_ms(10); sunxi_lcd_pin_cfg(sel, 0); /*config lcd_power pin to close lcd power0 */ sunxi_lcd_power_disable(sel, 0); } static void LCD_bl_open(u32 sel) { sunxi_lcd_pwm_enable(sel); /*config lcd_bl_en pin to open lcd backlight */ sunxi_lcd_backlight_enable(sel); } static void LCD_bl_close(u32 sel) { /*config lcd_bl_en pin to close lcd backlight */ sunxi_lcd_backlight_disable(sel); sunxi_lcd_pwm_disable(sel); } /*static int bootup_flag = 0;*/ static void LCD_panel_init(u32 sel) { struct disp_panel_para *info = kmalloc(sizeof(struct disp_panel_para), GFP_KERNEL); DBG_INFO("\n"); bsp_disp_get_panel_info(sel, info); lcd_panel_ili9488_init(sel, info); kfree(info); return; } static void LCD_panel_exit(u32 sel) { sunxi_lcd_cpu_write_index(0, 0x28); sunxi_lcd_delay_ms(10); sunxi_lcd_cpu_write_index(0, 0x10); sunxi_lcd_delay_ms(120); } static void lcd_panel_ili9488_init(u32 sel, struct disp_panel_para *info) { DBG_INFO("\n"); /*lcd_cs, active low */ lcd_cs(0); sunxi_lcd_delay_ms(10); panel_reset(1); sunxi_lcd_delay_ms(20); panel_reset(0); sunxi_lcd_delay_ms(20); panel_reset(1); sunxi_lcd_delay_ms(120); sunxi_lcd_cpu_write_index(0, 0xF7); sunxi_lcd_cpu_write_data(0, 0xA9); sunxi_lcd_cpu_write_data(0, 0x51); sunxi_lcd_cpu_write_data(0, 0x2C); sunxi_lcd_cpu_write_data(0, 0x82); sunxi_lcd_cpu_write_index(0, 0xC0); sunxi_lcd_cpu_write_data(0, 0x11); sunxi_lcd_cpu_write_data(0, 0x09); sunxi_lcd_cpu_write_index(0, 0xC1); sunxi_lcd_cpu_write_data(0, 0x41); sunxi_lcd_cpu_write_index(0, 0xC5); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x2A); sunxi_lcd_cpu_write_data(0, 0x80); sunxi_lcd_cpu_write_index(0, 0xB1); sunxi_lcd_cpu_write_data(0, 0xB0); sunxi_lcd_cpu_write_data(0, 0x11); sunxi_lcd_cpu_write_index(0, 0xB4); sunxi_lcd_cpu_write_data(0, 0x02); sunxi_lcd_cpu_write_index(0, 0xB6); sunxi_lcd_cpu_write_data(0, 0x02); sunxi_lcd_cpu_write_data(0, 0x22); sunxi_lcd_cpu_write_index(0, 0xB7); sunxi_lcd_cpu_write_data(0, 0xC6); sunxi_lcd_cpu_write_index(0, 0xBE); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x04); sunxi_lcd_cpu_write_index(0, 0xE9); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_index(0, 0x3A); sunxi_lcd_cpu_write_data(0, 0x55); sunxi_lcd_cpu_write_index(0, 0xE0); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x07); sunxi_lcd_cpu_write_data(0, 0x12); sunxi_lcd_cpu_write_data(0, 0x0B); sunxi_lcd_cpu_write_data(0, 0x18); sunxi_lcd_cpu_write_data(0, 0x0B); sunxi_lcd_cpu_write_data(0, 0x3F); sunxi_lcd_cpu_write_data(0, 0x9B); sunxi_lcd_cpu_write_data(0, 0x4B); sunxi_lcd_cpu_write_data(0, 0x0B); sunxi_lcd_cpu_write_data(0, 0x0F); sunxi_lcd_cpu_write_data(0, 0x0B); sunxi_lcd_cpu_write_data(0, 0x15); sunxi_lcd_cpu_write_data(0, 0x17); sunxi_lcd_cpu_write_data(0, 0x0F); sunxi_lcd_cpu_write_index(0, 0xE1); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x16); sunxi_lcd_cpu_write_data(0, 0x1B); sunxi_lcd_cpu_write_data(0, 0x02); sunxi_lcd_cpu_write_data(0, 0x0F); sunxi_lcd_cpu_write_data(0, 0x06); sunxi_lcd_cpu_write_data(0, 0x34); sunxi_lcd_cpu_write_data(0, 0x46); sunxi_lcd_cpu_write_data(0, 0x48); sunxi_lcd_cpu_write_data(0, 0x04); sunxi_lcd_cpu_write_data(0, 0x0D); sunxi_lcd_cpu_write_data(0, 0x0D); sunxi_lcd_cpu_write_data(0, 0x35); sunxi_lcd_cpu_write_data(0, 0x36); sunxi_lcd_cpu_write_data(0, 0x0F); sunxi_lcd_cpu_write_index(0, 0x2A); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x01); sunxi_lcd_cpu_write_data(0, 0xDF); sunxi_lcd_cpu_write_index(0, 0x2B); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x00); sunxi_lcd_cpu_write_data(0, 0x01); sunxi_lcd_cpu_write_data(0, 0x3F); sunxi_lcd_cpu_write_index(0, 0x36); sunxi_lcd_cpu_write_data(0, 0x68); #if defined(CPU_TRI_MODE) /* enable te, mode 0 */ sunxi_lcd_cpu_write_index(0, 0x35); sunxi_lcd_cpu_write_data(0, 0x00); #endif sunxi_lcd_cpu_write_index(0, 0x11); sunxi_lcd_delay_ms(120); sunxi_lcd_cpu_write_index(0, 0x29); sunxi_lcd_cpu_write_index(0, 0x2c); } /* panel driver name, must mach the name of lcd_drv_name in sys_config.fex */ struct __lcd_panel ili9488_cpu_panel = { .name = "ili9488_cpu", .func = { .cfg_panel_info = LCD_cfg_panel_info, .cfg_open_flow = LCD_open_flow, .cfg_close_flow = LCD_close_flow, }, };Kconfig 添加
config LCD_SUPPORT_ILI9488_CPU bool "LCD support ili9488_cpu panel" default n ---help--- If you want to support ili9488_cpu panel for display driver, select it.Makefile 添加
disp-$(CONFIG_LCD_SUPPORT_ILI9488_CPU) += lcd/ili9488_cpu.opanels.c 添加
#ifdef CONFIG_LCD_SUPPORT_ILI9488_CPU &ili9488_cpu_panel, #endifpanels.h 添加
#ifdef CONFIG_LCD_SUPPORT_ILI9488_CPU extern struct __lcd_panel ili9488_cpu_panel; #endif再打开 m kernel_menuconfig
Device Drivers ---> Graphics support ---> Frame buffer Devices ---> Video support for sunxi ---> LCD panels select ---> [*] LCD support ili9488_cpu panel修改 board.dts
disp
&disp { disp_init_enable = <1>; disp_mode = <0>; screen0_output_type = <1>; screen0_output_mode = <4>; screen1_output_type = <3>; screen1_output_mode = <4>; screen1_output_format = <0>; screen1_output_bits = <0>; screen1_output_eotf = <4>; screen1_output_cs = <257>; screen1_output_dvi_hdmi = <2>; screen1_output_range = <2>; screen1_output_scan = <0>; screen1_output_aspect_ratio = <8>; dev0_output_type = <1>; dev0_output_mode = <4>; dev0_screen_id = <0>; dev0_do_hpd = <0>; dev1_output_type = <4>; dev1_output_mode = <10>; dev1_screen_id = <1>; dev1_do_hpd = <1>; def_output_dev = <1>; hdmi_mode_check = <3>; disp_rotation_used = <1>; degree0 = <0>; fb0_format = <10>; fb0_buffer_num = <1>; /*fb0_width = <800>;*/ /*fb0_height = <480>;*/ /*read from lcd*/ fb1_format = <0>; fb1_width = <0>; fb1_height = <0>; chn_cfg_mode = <1>; disp_para_zone = <1>; /*VCC-LCD*/ /* dc1sw-supply = <®_dc1sw>;*/ /*VCC-DSI*/ /* eldo3-supply = <®_eldo3>;*/ /*VCC-PD*/ /* dcdc1-supply = <®_dcdc1>;*/ };lcd0
&lcd0 { /* part 1 */ lcd_used = <1>; lcd_driver_name = "ili9488_cpu"; /* part 2 */ lcd_if = <1>; lcd_cpu_if = <8>; /* part 3 */ lcd_x = <480>; lcd_y = <320>; lcd_width = <72>; lcd_height = <48>; lcd_dclk_freq = <10>; lcd_hbp = <2>; lcd_ht = <486>; lcd_hspw = <2>; lcd_vbp = <20>; lcd_vt = <342>; lcd_vspw = <2>; /* part 4 */ lcd_pwm_used = <1>; lcd_pwm_ch = <8>; lcd_pwm_freq = <50000>; lcd_pwm_pol = <1>; lcd_pwm_max_limit = <255>; lcd_bright_curve_en = <0>; /* part 5 */ lcd_cpu_mode = <1>; lcd_cpu_te = <1>; /* part 6 */ lcd_frm = <2>; lcd_gamma_en = <0>; lcd_cmap_en = <0>; lcd_rb_swap = <0>; /* part 7 */ // reset pin lcd_gpio_0 = <&pio PD 0 GPIO_ACTIVE_HIGH>; // cs pin lcd_gpio_1 = <&pio PD 9 GPIO_ACTIVE_HIGH>; pinctrl-0 = <&rgb16_pins_a>; pinctrl-1 = <&rgb16_pins_b>; };然后在pio中添加
rgb16_pins_a: rgb16@0 { pins = "PD1", "PD2","PD3","PD4","PD5","PD6", "PD7", "PD8", \ "PD10", "PD11", "PD12", "PD13", "PD14", "PD15", "PD16", "PD17", \ "PD18", "PD19", "PD20", "PD21"; function = "lcd0"; drive-strength = <30>; bias-disable; }; rgb16_pins_b: rgb16@1 { pins = "PD1", "PD2","PD3","PD4","PD5","PD6", "PD7", "PD8", \ "PD10", "PD11", "PD12", "PD13", "PD14", "PD15", "PD16", "PD17", \ "PD18", "PD19", "PD20", "PD21"; function = "io_disabled"; bias-disable; };测试 gpsp 显示
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尚未解决问题
- fb0_format 修改为10 后启动 log 是绿色
fb0_format = <10>;
- 屏幕实时帧率与期望帧率相差较大
lcd_x = <480>; lcd_y = <320>; lcd_width = <72>; lcd_height = <48>; lcd_dclk_freq = <10>; lcd_hbp = <2>; lcd_ht = <486>; lcd_hspw = <2>; lcd_vbp = <20>; lcd_vt = <342>; lcd_vspw = <2>; lcd_cpu_mode = <1>; lcd_cpu_te = <1>;
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@hsinyuwang 12M的频率应该不会误差很大，你要修改 ht vt。。
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@hsinyuwang 终于看到有点i80接口的帖子，此处缺少一个原理图~~ 有机会复刻的话，到时传一个，哈哈哈
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请问你开启了SDL双缓冲SDL_DOUBLEBUF了吗？
我测试提示段错误。是还要配置什么环境的吗？
screen = SDL_SetVideoMode(480, 32, 16, SDL_SWSURFACE | SDL_DOUBLEBUF); -
@wj8331585 DOUBLEBUF 只要驱动支持就可以
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@hsinyuwang 我用的是芒果派的tina linux,它支持SDL_DOUBLEBUF吗？
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麻烦提供一份接线图吗？我按照你的配置，屏幕没反应
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