Re: [RFC v2 0/5] Common Display Framework

On Fri, Feb 1, 2013 at 5:42 PM, Laurent Pinchart
[off-list ref] wrote:

Hi Rahul,

On Wednesday 09 January 2013 13:53:30 Rahul Sharma wrote:

quoted

Hi Laurent,

CDF will also be helpful in supporting Panels with integrated audio
(HDMI/DP) if we can add audio related control operations to
display_entity_control_ops. Video controls will be called by crtc in DRM/V4L
and audio controls from Alsa.

I knew that would come up at some point :-) I agree with you that adding audio
support would be a very nice improvement, and I'm totally open to that, but I
will concentrate on video, at least to start with. The first reason is that
I'm not familiar enough with ALSA, and the second that there's only 24h per
day :-)

Please feel free, of course, to submit a proposal for audio support.

quoted

Secondly, if I need to support get_modes operation in hdmi/dp panel, I need
to implement edid parser inside the panel driver. It will be meaningful to
add get_edid control operation for hdmi/dp.

Even if EDID data is parsed in the panel driver, raw EDID will still need to
be exported, so a get_edid control operation (or something similar) is
definitely needed. There's no disagreement on this, I just haven't included
that operation yet because my test hardware is purely panel-based.

one of (probably many) places that just keeping CDF (CDH? common
display helpers..) inside DRM makes life easier :-P

BR,
-R

--
Regards,

Laurent Pinchart

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