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最新推荐文章于 2025-03-03 16:57:56 发布
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最新推荐文章于 2025-03-03 16:57:56 发布 · 2.9k 阅读
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CC 4.0 BY-SA版权
本文详细介绍了JD9366_LCD面板的初始化配置流程，包括GPIO设置、背光控制、显示参数配置及DSI接口配置。通过具体代码示例展示了如何使用寄存器配置实现LCD面板的正确显示。
#include "JD9366_BOE7P.h"

#define panel_reset(val) sunxi_lcd_gpio_set_value(sel, 0, val)
#define panel_power_en(val) sunxi_lcd_gpio_set_value(sel, 1, val)
#define Delayms(x) sunxi_lcd_delay_ms(x);
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(panel_extend_para *info)
{
    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));

}

static __s32 LCD_open_flow(u32 sel)
{
    /* open lcd power, and delay 50ms */
    LCD_OPEN_FUNC(sel, LCD_power_on, 5);
    /* open lcd power, than delay 200ms */
    LCD_OPEN_FUNC(sel, LCD_panel_init, 40);
    /* open lcd controller, and delay 100ms */
    LCD_OPEN_FUNC(sel, sunxi_lcd_tcon_enable, 40);
    /* open lcd backlight, and delay 0ms */
    LCD_OPEN_FUNC(sel, LCD_bl_open, 0);

    return 0;
}

static __s32 LCD_close_flow(u32 sel)
{
    /* close lcd backlight, and delay 0ms */
    LCD_CLOSE_FUNC(sel, LCD_bl_close, 0);
    /* close lcd controller, and delay 0ms */
    LCD_CLOSE_FUNC(sel, sunxi_lcd_tcon_disable, 0);
    /* open lcd power, than delay 200ms */
    LCD_CLOSE_FUNC(sel, LCD_panel_exit,	20);
    /* cose lcd power, and delay 500ms */
    LCD_CLOSE_FUNC(sel, LCD_power_off, 50);

    return 0;
}

static void LCD_power_on(u32 sel)
{
    sunxi_lcd_pin_cfg(sel, 1);
    panel_power_en(0);
    /* config lcd_power pin to open lcd power0 */
    sunxi_lcd_power_enable(sel, 1);
    sunxi_lcd_delay_ms(5);
    /* config lcd_power pin to open lcd power1 */
    sunxi_lcd_power_enable(sel, 0);
    sunxi_lcd_delay_ms(8);
    panel_power_en(1);
    sunxi_lcd_delay_ms(10);
    panel_reset(1);
    sunxi_lcd_delay_ms(10);
    panel_reset(0);
    sunxi_lcd_delay_ms(20);
    panel_reset(1);
}

static void LCD_power_off(u32 sel)
{
    sunxi_lcd_pin_cfg(sel, 0);
    /* config lcd_power pin to close lcd power1 */
    sunxi_lcd_power_disable(sel, 0);
    /* config lcd_power pin to close lcd power0 */
    sunxi_lcd_power_disable(sel, 1);
    /* sunxi_lcd_pwm_disable(sel);//close pwm module */
}

static void LCD_bl_open(u32 sel)
{
    /* open pwm module */
    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);
    /* close pwm module */
    sunxi_lcd_pwm_disable(sel);
}
#if 0

#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[64];
};


static struct LCM_setting_table lcm_initialization_setting[] = {
    {0xE0, 1, {0x00} },
    {0xE1, 1, {0x93} },
    {0xE2, 1, {0x65} },
    {0xE3, 1, {0xF8} },
    {0x80, 1, {0x03} },	/* 4Lanes */
    {0xE0, 1, {0x04} },
    {0x2D, 1, {0x03} }, /* 4Lanes */
    {0xE0, 1, {0x01} },
    {0x00, 1, {0x00} },
    {0x01, 1, {0x6F} },
    {0x03, 1, {0x00} },
    {0x04, 1, {0x6F} },
    {0x17, 1, {0x00} },
    {0x18, 1, {0xD7} }, /* VGMP=4.8V */
    {0x19, 1, {0x05} },
    {0x1A, 1, {0x00} },
    {0x1B, 1, {0xD7} }, /* VGMN=-4.8V */
    {0x1C, 1, {0x05} },
    {0x1F, 1, {0x79} }, /* VGH_REG=18V */
    {0x20, 1, {0x2D} }, /* VGL_REG=-12V */
    {0x21, 1, {0x2D} }, /* VGL_REG2=-12V */
    {0x22, 1, {0x4F} },
    {0x26, 1, {0xF1} }, /* VDDD from IOVCC */
    {0x37, 1, {0x09} }, /* SS=1, 1, {BGR=1 */
    {0x38, 1, {0x04} }, /* JDT=100 column inversion */
    {0x39, 1, {0x08} }, /* RGB_N_EQ1, 1, { modify 20140806 */
    {0x3A, 1, {0x12} }, /* RGB_N_EQ2, 1, { modify 20140806 */
    {0x3C, 1, {0x78} }, /* SET EQ3 for TE_H */
    {0x3E, 1, {0x80} }, /* SET CHGEN_OFF, 1, { modify 20140806 */
    {0x3F, 1, {0x80} }, /* SET CHGEN_OFF2, 1, { modify 20140806 */
    {0x40, 1, {0x06} }, /* RSO=800 RGB */
    {0x41, 1, {0xA0} }, /* LN=640->1280 line */
    {0x55, 1, {0x0F} }, /* DCDCM=1111, 1, { no output */
    {0x56, 1, {0x01} },
    {0x57, 1, {0xA8} }, /*[7:5]VGH_RT, 1, {[4:2]=VGL_RT, 1, {[1:0]=VCL_RT*/
    {0x58, 1, {0x0A} }, /* AVDD_S */
    {0x59, 1, {0x2A} }, /* VCL = -2.7V */
    {0x5A, 1, {0x37} }, /* VGH = 19V */
    {0x5B, 1, {0x19} },/* VGL = -12V */
    {0x5D, 1, {0x70} },
    {0x5E, 1, {0x50} },
    {0x5F, 1, {0x3F} },
    {0x60, 1, {0x31} },
    {0x61, 1, {0x2D} },
    {0x62, 1, {0x1D} },
    {0x63, 1, {0x22} },
    {0x64, 1, {0x0C} },
    {0x65, 1, {0x25} },
    {0x66, 1, {0x24} },
    {0x67, 1, {0x24} },
    {0x68, 1, {0x41} },
    {0x69, 1, {0x2F} },
    {0x6A, 1, {0x36} },
    {0x6B, 1, {0x28} },
    {0x6C, 1, {0x26} },
    {0x6D, 1, {0x1C} },
    {0x6E, 1, {0x08} },
    {0x6F, 1, {0x02} },
    {0x70, 1, {0x70} },
    {0x71, 1, {0x50} },
    {0x72, 1, {0x3F} },
    {0x73, 1, {0x31} },
    {0x74, 1, {0x2D} },
    {0x75, 1, {0x1D} },
    {0x76, 1, {0x22} },
    {0x77, 1, {0x0C} },
    {0x78, 1, {0x25} },
    {0x79, 1, {0x24} },
    {0x7A, 1, {0x24} },
    {0x7B, 1, {0x41} },
    {0x7C, 1,