linux移植LCD驱动

所用内核版本为 linux_2.6.22

1.其实所要修改的只有 \arch\arm\mach-s3c2440\mach-smdk2440.c

static struct s3c2410fb_mach_info smdk2440_lcd_cfg __initdata = {
    .regs    = {

        .lcdcon1    = S3C2410_LCDCON1_TFT16BPP |
                 S3C2410_LCDCON1_TFT |
                 S3C2410_LCDCON1_CLKVAL(0x04),

        .lcdcon2    = S3C2410_LCDCON2_VBPD(7) |
                 S3C2410_LCDCON2_LINEVAL(319) |
                 S3C2410_LCDCON2_VFPD(6) |
                 S3C2410_LCDCON2_VSPW(3),

        .lcdcon3    = S3C2410_LCDCON3_HBPD(19) |
                 S3C2410_LCDCON3_HOZVAL(239) |
                 S3C2410_LCDCON3_HFPD(7),

        .lcdcon4    = S3C2410_LCDCON4_MVAL(0) |
                 S3C2410_LCDCON4_HSPW(3),

        .lcdcon5    = S3C2410_LCDCON5_FRM565 |
                 S3C2410_LCDCON5_INVVLINE |
                 S3C2410_LCDCON5_INVVFRAME |
                 S3C2410_LCDCON5_PWREN |
                 S3C2410_LCDCON5_HWSWP,
    },

    .gpccon        = 0xaaaaaaaa,
    .gpccon_mask    = 0xffffffff,
    .gpcup        = 0xffffffff,
    .gpcup_mask    = 0xffffffff,
    .gpdcon        = 0xaaaaaaaa,
    .gpdcon_mask    = 0xffffffff,
    .gpdup        = 0x0000faff,
    .gpdup_mask    = 0xffffffff,

//    .lpcsel        = ((0xCE6) & ~7) | 1<<4,
    .type        = S3C2410_LCDCON1_TFT,

    .width        = 240,
    .height        = 320,

    .xres        = {
        .min    = 240,
        .max    = 240,
        .defval    = 240,
    },

    .yres        = {
        .min    = 320,
        .max    = 320,
        .defval = 320,
    },

    .bpp        = {
        .min    = 16,
        .max    = 16,
        .defval = 16,
    },
};

2、配置内核以使用LCD

Device Drivers --->
    Graphics support --->
        < > Lowlevel video output switch controls
        <*> Support for frame buffer devices --->
            --- Support for frame buffer devices
            [*] Enable firmware EDID
            [ ] Framebuffer foreign endianness support --->
            [*] Enable Video Mode Handling Helpers
            [ ] Enable Tile Blitting Support
            *** Frame buffer hardware drivers ***
            < > Epson S1D13XXX framebuffer support
            <*> S3C2410 LCD framebuffer support
            [ ] S3C2410 lcd debug messages
            < > Silicon Motion SM501 framebuffer support
            < > Virtual Frame Buffer support (ONLY FOR TESTING!)
            < > E-Ink Metronome/8track controller support
            < > Fujitsu MB862xx GDC support
            < > E-Ink Broadsheet/Epson S1D13521 controller support
        [*] Backlight & LCD device support --->
            Display device support --->
            Console display driver support --->
        [*] Bootup logo --->
            --- Bootup logo
            [ ] Standard black and white Linux logo
            [ ] Standard 16-color Linux logo
            [*] Standard 224-color Linux logo (NEW)

3、重新make 将重做的uImage 替换原来的，那么LCD亮起，并且有小企鹅的图标。