[Xorg-driver-geode] display mode with 800x480 on geode-2.11.1

[wan michael]

in the file drivers/video/geode/lxfb_core.c

static struct fb_videomode geode_modedb[] __initdata = {
        /* 640x480-60 */
        { NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,
          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
          FB_VMODE_NONINTERLACED, 0 },
       ......
}

now i want to add the mode of 800x480, but how to calculate these values.
such as
800x480-60, 800x480-70, 800x480-72, 800x480-80, 80x480-85, and so on. it is
the case of changing the refresh frequency, what is the calculation?

2009/4/26 wan michael <michalwan at gmail.com>

>  is it possible to be standard modeline like 800X600 through adding
> 800x480 into geode driver, not just the custom modeline in the xorg.conf ?
>
> another question, like 7" LCD display, they are commonly used in the
> embedded device, like MID or handheld device, the most resolution is
> 800x480. not like common PC, which can provide much more higher resolution
> than 7" LCD display, such as 1024X768, and so on. So, when used for PC, it
> always selects the best resolution,  and it can not do that for the embedded
> device, for the reason of 7" LCD display supporting the most high resolution
> is 800X480, if both of them can not match well, the display will not be
> normal. so is there one way to automatically match them, adapting to
> 800X480, not the higher?
>
>  2009/4/24 John Yoder <jtyoder at twny.net>
>
>>  On Wed, 2009-04-22 at 14:20 +0800, wan michael wrote:
>>
>> hi
>>
>> can the geode driver provide the mode 800x480? if so, it can meet the 7'
>> LCD display which is 800x480, and not the standard modes on pc.
>>
>>
>>
>> _______________________________________________
>> Xorg-driver-geode mailing listXorg-driver-geode at lists.x.orghttp://lists.x.org/mailman/listinfo/xorg-driver-geode
>>
>> It should be able to provide the 800x480 mode. However, that will require
>> a custom modeline in the xorg.cong. I would use one of the modeline
>> calculators as a starting point. Whenever I need to provide custom modelines
>> it takes a bit to get the dot clock frequency of the LX and Monitor to be
>> correct, but not typically much of a problem.
>>
>> Best Regards,
>>
>> John Yoder
>>
>
>
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