fl2440内核移植（三）——LCD移植

注：板子为4.3寸屏

1、修改arch/arm/mach-s3c2440/mach-smdk2440.c，使开发板上的LCD资源可用

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 = 111111,

.xres = 480,

.yres = 272,

.bpp = 16,

.left_margin = 38,

.right_margin = 20,

.hsync_len = 30,

.upper_margin = 15,

.lower_margin = 12,

.vsync_len = 3,

};

static struct s3c2410fb_mach_info smdk2440_fb_info __initdata = {

.displays = &smdk2440_lcd_cfg,

.num_displays = 1,

.default_display = 0,

#if 0

/* currently setup by downloader */

.gpccon = 0xaa940659,

.gpccon_mask = 0xffffffff,

.gpcup = 0x0000ffff,

.gpcup_mask = 0xffffffff,

.gpdcon = 0xaa84aaa0,

.gpdcon_mask = 0xffffffff,

.gpdup = 0x0000faff,

.gpdup_mask = 0xffffffff,

#endif

.lpcsel = 0,

};

2、配置menuconfig，使能LCD相关驱动

Device Drivers----->

Graphics support----->

<*> /dev/agpgart (AGP Support) --->

│ │ -*- VGA Arbitration

│ │ (64) Maximum number of GPUs

│ │ [*] Laptop Hybrid Graphics - GPU switching support

│ │ <M> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) --->

│ │ < > Intel GMA500 Stub Driver (NEW)

│ │ {M} 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 ***

│ │ -*- Backlight & LCD device support --->

│ │ Display device support --->

│ │ Console display driver support --->

│ │ [*] Bootup logo --->

重新编译内核烧录后可看到屏幕左上角出现小企鹅，移植完成