请问下，我现在用A133 驱动st7701s[480x480],dts配置如下，我配置了2lane ，奇怪的是lane2 lane3都有数据，不知道哪里没配置对，谢谢指点
lcd0: lcd0@01c0c000 {
lcd_used = <1>;
lcd_driver_name = "st7701s";
lcd_backlight = <100>;
lcd_if = <4>;
lcd_x = <480>;
lcd_y = <480>;
lcd_width = <72>;
lcd_height = <72>;
lcd_dclk_freq = <16>;
lcd_pwm_used = <1>;
lcd_pwm_ch = <3>;
lcd_pwm_freq = <1000>;
lcd_pwm_pol = <0>;
lcd_pwm_max_limit = <255>;
lcd_hbp = <30>;
lcd_ht = <525>;
lcd_hspw = <25>;
lcd_vbp = <20>;
lcd_vt = <525>;
lcd_vspw = <8>;
lcd_frm = <0>;
lcd_gamma_en = <0>;
lcd_bright_curve_en = <0>;
lcd_cmap_en = <0>;
deu_mode = <0>;
lcdgamma4iep = <22>;
smart_color = <90>;
lcd_dsi_if = <0>;
lcd_dsi_lane = <2>;
lcd_dsi_format = <0>;
lcd_dsi_te = <0>;
lcd_dsi_eotp = <0>;
lcd_pin_power = "dcdc1";
lcd_pin_power1 = "eldo3";
lcd_power = "dc1sw";
lcd_gpio_0 = <&r_pio PL 11 1 0 3 1>;
pinctrl-0 = <&dsi2lane_pins_a>;
pinctrl-1 = <&dsi2lane_pins_b>;
}
驱动程序如下
/* drivers/video/sunxi/disp2/disp/lcd/ST7796S.c
*
* Copyright (c) 2017 Allwinnertech Co., Ltd.
* Author: zhengxiaobin <zhengxiaobin@allwinnertech.com>
*
* 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 = "st7701s"
*
* lcd_bl_0_percent = 0
* lcd_bl_40_percent = 23
* lcd_bl_100_percent = 100
* lcd_backlight = 88
*
* lcd_if = 4
* lcd_x = 480
* lcd_y = 640
* lcd_width = 36
* lcd_height = 65
* lcd_dclk_freq = 25
*
* lcd_pwm_used = 1
* lcd_pwm_ch = 8
* lcd_pwm_freq = 50000
* lcd_pwm_pol = 1
* lcd_pwm_max_limit = 255
*
* lcd_hbp = 70
* lcd_ht = 615
* lcd_hspw = 8
* lcd_vbp = 30
* lcd_vt = 690
* lcd_vspw = 10
*
* lcd_dsi_if = 0
* lcd_dsi_lane = 2
* lcd_dsi_format = 0
* lcd_dsi_te = 0
* 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:PD09<1><0><default><1>
* lcd_power = "vcc-lcd"
* lcd_pin_power = "vcc18-dsi"
* lcd_pin_power1 = "vcc-pd"
*
* ;reset
* lcd_gpio_0 = port:PD09<1><0><default><1>
*/
#include "st7701s.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)
#define DBG_INFO(format, args...) (printk("[ST7701S LCD INFO] LINE:%04d-->%s:"format, __LINE__, __func__, ##args))
#define DBG_ERR(format, args...) (printk("[ST7701S LCD ERR] LINE:%04d-->%s:"format, __LINE__, __func__, ##args))
static void lcd_cfg_panel_info(struct panel_extend_para *info)
{
DBG_INFO("\n");
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)
{
DBG_INFO("\n");
LCD_OPEN_FUNC(sel, lcd_power_on, 0);
LCD_OPEN_FUNC(sel, lcd_panel_init, 10);
LCD_OPEN_FUNC(sel, sunxi_lcd_tcon_enable, 10);
LCD_OPEN_FUNC(sel, lcd_bl_open, 0);
return 0;
}
static s32 lcd_close_flow(u32 sel)
{
DBG_INFO("\n");
LCD_CLOSE_FUNC(sel, lcd_bl_close, 0);
LCD_CLOSE_FUNC(sel, lcd_panel_exit, 10);
LCD_CLOSE_FUNC(sel, sunxi_lcd_tcon_disable, 0);
LCD_CLOSE_FUNC(sel, lcd_power_off, 0);
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);
/* reset lcd by gpio */
panel_reset(sel, 1);
sunxi_lcd_delay_ms(1);
panel_reset(sel, 0);
sunxi_lcd_delay_ms(1);
panel_reset(sel, 1);
sunxi_lcd_delay_ms(10);
}
static void lcd_power_off(u32 sel)
{
sunxi_lcd_pin_cfg(sel, 0);
sunxi_lcd_delay_ms(1);
panel_reset(sel, 0);
sunxi_lcd_delay_ms(1);
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 0XFE
#define REGFLAG_END_OF_TABLE 0xFC /* END OF REGISTERS MARKER */
struct LCM_setting_table {
u8 cmd;
u32 count;
u8 para_list[18];
};
static struct LCM_setting_table lcm_initialization_setting[] = {
{0x11, 1, {0x00} },
{REGFLAG_DELAY, 60, {} },
{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x10} },
{0xc0, 2, {0x4f, 0x00} },
{0xc1, 2, {0x07, 0x02} },
{0xc2, 2, {0x31, 0x05} },
{0xcc, 1, {0x10} },
{0xb0, 16, {0x00, 0x0a, 0x11, 0x0c, 0x10, 0x05, 0x00, 0x08, 0x08, 0x1f,
0x07, 0x13, 0x10, 0xa9, 0x30, 0x18} },
{0xb1, 16, {0x00, 0x0b, 0x11, 0x0d, 0x0f, 0x05, 0x02, 0x07, 0x06, 0x20,
0x05, 0x15, 0x13, 0xa9, 0x30, 0x18} },
{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x11} },
{0xb0, 1, {0x53} },
{0xb1, 1, {0x60} },
{0xb2, 1, {0x07} },
{0xb3, 1, {0x08} },
{0xb5, 1, {0x49} },
{0xb7, 1, {0x85} },
{0xb8, 1, {0x21} },
{0xb9, 1, {0x10} },
{0xc1, 1, {0x78} },
{0xc2, 1, {0x78} },
{REGFLAG_DELAY, 50, {} },
{0xd0, 1, {0x88} },
{0xe0, 3, {0x00, 0x00, 0x02} },
{0xe1, 11, {0x03, 0xa0, 0x00, 0x00, 0x02, 0xa0, 0x00, 0x00, 0x00, 0x33,
0x33} },
{0xe2, 12, {0x22, 0x22, 0x33, 0x33, 0x88, 0xa0, 0x00, 0x00, 0x87, 0xa0,
0x00, 0x00} },
{0xe3, 4, {0x00, 0x00, 0x22, 0x22} },
{0xe4, 2, {0x44, 0x44} },
{0xe5, 16, {0x04, 0x84, 0xa0, 0xa0, 0x06, 0x86, 0xa0, 0xa0, 0x08, 0x88,
0xa0, 0xa0, 0x0a, 0x8a, 0xa0, 0xa0} },
{0xe6, 4, {0x00, 0x00, 0x22, 0x22} },
{0xe7, 2, {0x44, 0x44} },
{0xe8, 16, {0x03, 0x83, 0xa0, 0xa0, 0x05, 0x85, 0xa0, 0xa0, 0x07, 0x87,
0xa0, 0xa0, 0x09, 0x89, 0xa0, 0xa0} },
{0xeb, 7, {0x00, 0x01, 0xe4, 0xe4, 0x88, 0x00, 0x40} },
{0xec, 2, {0x3c, 0x01} },
{0xed, 16, {0xab, 0x89, 0x76, 0x54, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0x20, 0x45, 0x67, 0x98, 0xba} },
{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x00} },
{REGFLAG_DELAY, 50, {} },
{0x29, 1, {0x00} },
{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(10);
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 st7701s_panel = {
/* panel driver name, must mach the name of
* lcd_drv_name in sys_config.fex
*/
.name = "st7701s",
.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,
},
};
现在屏幕背光可以，但是屏幕没被点亮，请问可能是哪里问题？