A strange question for LCD

A strange question for LCD

[z g]

I have a LCD(LQ035q7db02). It supports 240X320(H X W). I have a frame 
buffer driver for it and it works well. But I have to change the display 
mode in 320X240 (H X W) . I don't know whether I can change the frame 
buffer driver to implement it. If can, how to change the driver. If anyone 
can help me? Thanks!




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Re: A strange question for LCD

[Michal 'hramrach' Suchanek]

On Mon, Oct 04, 2004 at 03:15:40PM +0000, z g wrote:
> I have a LCD(LQ035q7db02). It supports 240X320(H X W). I have a frame 
> buffer driver for it and it works well. But I have to change the display 
> mode in 320X240 (H X W) . I don't know whether I can change the frame 
> buffer driver to implement it. If can, how to change the driver. If anyone 
> can help me? Thanks!
Perhaps you want fbset?


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Re: A strange question for LCD

[Antonino A. Daplas]

On Monday 04 October 2004 23:15, z g wrote:
> I have a LCD(LQ035q7db02). It supports 240X320(H X W). I have a frame
> buffer driver for it and it works well. But I have to change the display
> mode in 320X240 (H X W) . I don't know whether I can change the frame
> buffer driver to implement it. If can, how to change the driver. If anyone
> can help me? Thanks!

You need to support 2 methods:

xxxfb_check_var()
- check the passed var structure for compatibility with the hardware. If
not, it's acceptable to return a modified var that is agreeable to the
driver. 

xxxfb_set_par()
- change the hardware state according to the contents of info->var.

Once you've added the above methods, you can choose the driver's initial
mode by various methods, or you can use fbset to change the resolution after
the driver loads.

Tony 




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