LCD transplantation of PXA270 (XScale core)

1. Configure the kernel

Graphics support --->

<*> Support for frame buffer devices --->

<M> pxa LCD framebuffer support

Consoledisplay driver support --->

<*> Framebuffer console support

 

2. Configure Resources

(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 = 0 xffffffff,

},

. Num_resources = array_size (pxafb_resources ),

. Resource = pxafb_resources,

};

 

 

Call set_pxa_fb_info (& hepxa270_pxafb_info) to register platform devices and resources.

 

The source code of set_pxa_fb_info is as follows. In set_pxa_fb_info, pxa_register_device is called to register the platform device.

Void _ init set_pxa_fb_info (structpxafb_mach_info * info)

{

Pxa_register_device (& pxa_device_fb, Info );

}