Re: [Linux-fbdev-devel] drm_fb_helper: Impossible to change video mode

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On Sat, Nov 21, 2009 at 6:48 AM, James Simmons <jsimmons@xxxxxxxxxxxxx> wrote:
>
>
> On Fri, 20 Nov 2009, Paulius Zaleckas wrote:
>
>> On 11/20/2009 10:01 PM, James Simmons wrote:
>> >
>> > > > > > Paulius Zaleckas wrote:
>> > > > > > > On drivers using drm_fb_helper's in fb_ops it is not possible to
>> > > > > > > change
>> > > > > > > video mode, because of different var->pixclock evaluation: ...
>> > > > > >
>> > > > > > patch:
>> > > > > > http://www.mail-archive.com/dri-devel@xxxxxxxxxxxxxxxxxxxxx/msg44369.html
>> > > > >
>> > > > > Those patches will enable fbdev apps to run properly. More patches are
>> > > > > needed if you want to support mode switching using the fbdev emulation
>> > > > > layer. I noticed my patches and yours where lost. Who do you send
>> > > > > patches
>> > > > > too that can merge them ?
>> > > >
>> > > > y:/usr/src/git26>   perl scripts/get_maintainer.pl -f
>> > > > drivers/gpu/drm/drm_fb_helper.c
>> > > > David Airlie<airlied@xxxxxxxx>
>> > > > Dave Airlie<airlied@xxxxxxxxxx>
>> > > > Jesse Barnes<jbarnes@xxxxxxxxxxxxxxxx>
>> > > > Mikael Pettersson<mikpe@xxxxxxxx>
>> > > > dri-devel@xxxxxxxxxxxxxxxxxxxxx
>> > > > linux-kernel@xxxxxxxxxxxxxxx
>> > > >
>> > > > That's accurate enough.
>> > > >
>> > > > Generally, if nothing has happened in a week, the chances that it's
>> > > > lost are very high.  Resend.  If you like, cc me and I'll maintain the
>> > > > patches
>> > > > and resend them for you.
>> > >
>> > > You can add Tested-by: Paulius Zaleckas<paulius.zaleckas@xxxxxxxxx>
>> > > for
>> > > http://www.mail-archive.com/dri-devel@xxxxxxxxxxxxxxxxxxxxx/msg44369.html
>> > > as this was preventing DirectFB from running on my Asus Eee PC 701.
>> >
>> > I tested it as well with the both my 3Dfx driver that I wrote with KMS and
>> > the nouveau driver. We just need to make sure that the patches end up in
>> > the drm-next tree or these patches will be lost when drm-next gets merged
>> > to linus tree.
>>
>> IMHO this patch should end up in current (2.6.32) kernel and we should
>> send it to stable ML.
>
> Honestly I like to see it there as well.
>

I have them queued for drm-next already at least locally, I wasn't aware
they were suitable for final, I didn't get a chance to really test them until
last week and make sure they didn't hide any side effects. I can
ask for them to go to stable when the merge window opens, I think
its too late for final.

Dave.
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