linux-2.6.30.24 移植lcd

先回忆一下关于tq2440 lcd的一些资料：

http://blog.sina.com.cn/s/blog_7090b8670101828y.html

参照tq2440出厂源代码。

1.

在mach-smdk2440.c/static struct s3c2410fb_display smdk2440_lcd_cfg __initdata中添加.setclkval =0x04,

static struct s3c2410fb_display smdk2440_lcd_cfg __initdata = {

.lcdcon5 = S3C2410_LCDCON5_FRM565 |

 S3C2410_LCDCON5_INVVLINE |

 S3C2410_LCDCON5_INVVFRAME |

 S3C2410_LCDCON5_PWREN |

 S3C2410_LCDCON5_HWSWP,

.type = S3C2410_LCDCON1_TFT,

.width = 480,

.height = 272,

.pixclock =40000,

.setclkval =0x04,//设置为0x04

.xres = 480,

.yres = 272,

.bpp = 16,

.left_margin = 19,

.right_margin = 10,

.hsync_len = 30,

.upper_margin = 4,

.lower_margin = 2,

.vsync_len = 8,

};

2.然后在s3c2410fb_display这个结构体的定义中添加unsigned setclkval;

struct s3c2410fb_display {

unsigned type;

unsigned short width;

unsigned short height;

unsigned short xres;

unsigned short yres;

unsigned short bpp;

unsigned pixclock;

unsigned setclkval;

unsigned short left_margin;  

unsigned short right_margin;

unsigned short hsync_len;    

unsigned short upper_margin;

unsigned short lower_margin;

unsigned short vsync_len;

unsigned long lcdcon5;

};

struct s3c2410fb_mach_info {

struct s3c2410fb_display *displays;

unsigned num_displays;

unsigned default_display;

unsigned long gpcup;

unsigned long gpcup_mask;

unsigned long gpccon;

unsigned long gpccon_mask;

unsigned long gpdup;

unsigned long gpdup_mask;

unsigned long gpdcon;

unsigned long gpdcon_mask;

unsigned long lpcsel;

};

3.在driver/video/s3c2410fb.c中的 s3c2410fb_activate_var(struct fb_info *info)中“"添加

struct s3c2410fb_mach_info *mach_info = fbi->dev->platform_data;

struct s3c2410fb_display *display = NULL;

struct s3c2410fb_display *default_display = mach_info->displays +

   mach_info->default_display;

fbi->regs.lcdcon1 |=  S3C2410_LCDCON1_CLKVAL(default_display->setclkval);

LCD驱动内核配置选项如下：

Device Drivers->Graphics support->Support for frame buffer devices->Enable firmware EDID、Enable Video Mode Handling Helpers和S3C2410 LCD framebuffer support，同时在Graphics support选项中还要选择Console display driver support->Framebuffer Console support；        

 5）添加开机Logo。具体Logo图片可以自行选择，我用的是Linux内核自带的