NEC3.5 LCD 移植

硬件平台： S3C2440， NEC 3.5 240*360

内核： Linux 2.6.14

---------------------------------------------------------------------------

1. 在 arch/arm/mach-s3c2410/mach-smdk2410.c 中加入代码
static struct s3c2410fb_mach_info sbc2440_lcdcfg __initdata =

{
     .regs={
             .lcdcon1=          S3C2410_LCDCON1_TFT16BPP | \
                                S3C2410_LCDCON1_TFT | \
                                S3C2410_LCDCON1_CLKVAL(0x04),
                                                                                
             .lcdcon2=          S3C2410_LCDCON2_VBPD(1) | \
                                S3C2410_LCDCON2_LINEVAL(319) | \
                                S3C2410_LCDCON2_VFPD(5) | \
                                S3C2410_LCDCON2_VSPW(1),
                                                                                
             .lcdcon3=          S3C2410_LCDCON3_HBPD(36) | \
                                S3C2410_LCDCON3_HOZVAL(239) | \
                                S3C2410_LCDCON3_HFPD(19),
                                                                                
             .lcdcon4=          S3C2410_LCDCON4_MVAL(13) | \
                                S3C2410_LCDCON4_HSPW(5),

 

             .lcdcon5=          S3C2410_LCDCON5_FRM565 | \
                                S3C2410_LCDCON5_INVVLINE | \
                                S3C2410_LCDCON5_INVVFRAME | \
                                S3C2410_LCDCON5_PWREN | \
                                S3C2410_LCDCON5_HWSWP,
        },
        .lpcsel=        0xf82,
        .gpccon=        0xaa955699,
        .gpccon_mask=   0xffc003cc,
        .gpcup=         0x0000ffff,
        .gpcup_mask=    0xffffffff,
        .gpdcon=        0xaa95aaa1,
        .gpdcon_mask=   0xffc0fff0,
        .gpdup=         0x0000faff,
        .gpdup_mask=    0xffffffff,
       
    .fixed_syncs=1 ,                                                                        
   .width=         240,
   .height=        320,
   .xres=   {
   .min = 240,
   .max = 240,
   .defval = 240
   },
    .yres=   {
   .max = 320,
   .min = 320,
   .defval = 320},
    .bpp= {
   .min = 16,
   .max = 16 ,
   .defval = 16
   },
};

2.加入头文件

#include
#include

 

3.加入代码（使得改lcd的配置信息编入内核）

确认 static struct platform_device *smdk2410_devices[] __initdata 包含代码

&s3c_device_lcd

 

加入函数

static void __init smdk2410_init(void)
{
     set_s3c2410fb_info(&sbc2440_lcdcfg);  //此函数在 devs.c中有定义
}

 

在

ACHINE_START(SMDK2410, "SMDK2410")

/* @TODO: request a new identifier and switch * to SMDK2410 */

加入
 .init_machine = smdk2410_init,

 

4. make menuconfig 中配置：

<>device driver

     <> graphic support

          <>support for frame

            <*> Framebuffer Console support
            [*] Select compiled-in fonts
            [*]   VGA 8x8 font
            [*]   VGA 8x16 font
            [*]   Mini 4x6 font
            [*] Sparc console 8x16 font           
          [*] Bootup logo  --->
            --- Bootup logo
            [*]   Standard 224-color Linux logo

 

;-------------------------------------------------------------------------------

遇到错误解决：

s3c2410-lcd s3c2410-lcd: no platform data for lcd, cannot attach
s3c2410-lcd: probe of s3c2410-lcd failed with error -22 lp

 

解决方法

lcd配置信息应该加入 smdk2410.c 文件中 而不是2440中， 尽管你使用的是s3c2440， 并且你的mach_type应该是193 而不是362

 

 

参考

http://blog.chinaunix.net/u1/34474/showart.php?id=396609