pxa270(Xscale核)的LCD移植
一,配置内核
Graphics support --->
<*>Support for frame buffer devices --->
<M> PXA LCD framebuffer support
Consoledisplay driver support --->
<*>Framebuffer Console support
二，配置资源
（1）
static struct pxafb_mode_infonec_nl6448bc26_09c_mode= {
.pixclock = 39722,
.xres = 640,
.yres = 480,
.bpp = 16,
.hsync_len = 56,
.left_margin = 16,
.right_margin = 88,
.vsync_len = 2,
.upper_margin = 12,
.lower_margin = 31,
.sync = 0,
};
static struct pxafb_mode_infosharp_lq080v3dg01_mode = {
.pixclock = 25000,
.xres = 640,
.yres = 480,
.bpp = 16,
.hsync_len = 64,
.left_margin = 48,
.right_margin = 16,
.vsync_len =1,
.upper_margin = 34,
.lower_margin = 7,
.sync = 0,
};
static struct pxafb_mach_infohepxa270_pxafb_info = {
.modes = &nec_nl6448bc26_09c_mode,
.num_modes = 1,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
（2）
static struct resource pxafb_resources[] ={
[0]= {
.start = 0x44000000,
.end = 0x4400ffff,
.flags = IORESOURCE_MEM,
},
[1]= {
.start = IRQ_LCD,
.end = IRQ_LCD,
.flags = IORESOURCE_IRQ,
},
};
static u64 fb_dma_mask = ~(u64)0;
struct platform_device pxa_device_fb = {
.name = "pxa2xx-fb",
.id = -1,
.dev = {
.dma_mask = &fb_dma_mask,
.coherent_dma_mask= 0xffffffff,
},
.num_resources = ARRAY_SIZE(pxafb_resources),
.resource = pxafb_resources,
};
调用set_pxa_fb_info(&hepxa270_pxafb_info);注册平台设备和资源
set_pxa_fb_info源码如下，set_pxa_fb_info中调用pxa_register_device注册平台设备
void __init set_pxa_fb_info(structpxafb_mach_info *info)
{
pxa_register_device(&pxa_device_fb,info);
}