* Re: monochrome framebuffer driver on EDB9307
[not found] <BAY12-F78D543C7574811FEA0F99C3520@phx.gbl>
@ 2006-08-02 12:30 ` Antonino A. Daplas
0 siblings, 0 replies; 2+ messages in thread
From: Antonino A. Daplas @ 2006-08-02 12:30 UTC (permalink / raw)
To: gaof fei; +Cc: linux-fbdev-devel
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gaof fei wrote:
> Dear List,
>
> I'm with linux-2.6.8 on EDB9307(ep93xx).
> At the moment, the framebuffer driver(ep93xxfb.c) doesn't support
> monochrome mode.
> However, I would like to support the mode.
> What can I do with ep93xxfb.c or anything else?
>
>> In fbdev parlance, monochrome means black and white and the
>> number of bits per pixel does not matter.
>>
>> (It's possible to have 1-bit but the visual is pseudocolor).
>>
>> Basically, set fix->visual = FB_VISUAL_MONO01 (or MONO10).
>>
>> Then set var->bits_per_pixel and var->{green|red|blue} to the appropriate
>> numbers. Assuming 1-bit monochrome:
>>
>> var->bits_per_pixel = var->green.length = var->red.length =
> var->blue.length = 1;
>> var->green.offset = var->red.offset = var->blue.offset = 0;
>>
>> Tony
>
> Thank you for your reply.
> I set visual to FB_VISUAL_MONO01, and bits_per_pixel is 4.
> However, I don't know how to set the PIXELMODE register and the pallette.
> Any suggestion?
You have to ask someone who has docs for that chipset.
Tony
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2006-08-02 12:30 ` monochrome framebuffer driver on EDB9307 Antonino A. Daplas
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