Re: [alsa-devel] [PATCH v4 0/3] support DP MST audio

Daniel Vetter
2017-01-11T07:39:15Z

On Tue, Jan 10, 2017 at 9:49 AM, Takashi Iwai <tiwai@suse.de> wrote:
> On Tue, 10 Jan 2017 09:45:31 +0100,
>> >-----Original Message-----
>> >From: Takashi Iwai [mailto:tiwai@suse.de]
>> >Sent: Tuesday, January 10, 2017 4:19 PM
>> >To: Yang, Libin <libin.yang@intel.com>
>> >Cc: Daniel Vetter <daniel@ffwll.ch>; intel-gfx <intel-gfx@lists.freedesktop.org>;
>> >Nikula, Jani <jani.nikula@linux.intel.com>; alsa-devel@alsa-project.org; Lin,
>> >Mengdong <mengdong.lin@intel.com>
>> >Subject: Re: [alsa-devel] [PATCH v4 0/3] support DP MST audio
>> >
>> >On Mon, 09 Jan 2017 07:22:55 +0100,
>> >Yang, Libin wrote:
>> >>
>> >> Hi Takashi,
>> >>
>> >> It seems the patches for DP MST in gfx is not merged into Linus branch.
>> >>
>> >> Do we have plan to merge gfx branch manually and review the patches for
>> >audio? Or we will wait the DP MST patches for i915 merged into Linus branch?
>> >
>> >Sorry, this was delayed due to the vacation.
>> >Now I applied these three patches to topic/hda-dp-mst branch based on 4.10-
>> >rc2, and it was merged to for-next branch.
>> >
>> > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git topic/hda-dp-
>> >mst
>>
>> Thanks. These audio patches are based on the i915 dp mst patches. Without
>> I915 driver patches support, it will make errors.
>
> Ah yeah, I forgot it. So I removed it from for-next branch, but
> topic/hda-dp-mst branch is kept so that it can be merged to i915
> tree.
>
> Let me know if there is any i915 branch I can pull into sound tree.

Aw, I didn't know that the depency goes this way round, the dp mst
patches (I'm not even sure which ones they are) on the i915 are just
on the general pile. So not anywhere near a place where I can make a
topic branch.

I guess what needs to be done now is a cherry-picked list of just the
patches we need, on top of -rc3, that I can then pull into
drm-intel.git plus send a pull request for that to Takashi. That means
the patches are twice in drm-intel.git, but if we cherry-pick
reference them correctly then that should be all ok and can't really
be helped.

Or we just delay the audio side for 4.12, dp mst audio support is 4
years late anyway, so one more release won'thurt that much ;-)
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch