[PATCH 0/2] Generic HDMI codec: Add channel mapping control
Takashi Sakamoto
o-takashi at sakamocchi.jp
Thu Dec 8 21:13:24 UTC 2016
On Dec 9 2016 05:52, Takashi Sakamoto wrote:
> On Dec 9 2016 01:37, Arnaud Pouliquen wrote:
>> Aim of this patch is to add 'Playback Channel Map' control to export
>> audio capabilities in term of HDMI sink speakers allocation.
>> This patch follow discussion initiates here:
>> [RFC] ASOC: HDMI audio info frame speaker allocation
>> http://www.spinics.net/lists/alsa-devel/msg57363.html
>>
>> The code is fully inspired from HDA driver.
>> On hw_param, HDMI sink speaker capabilities are exported via TLV ops
>> and a CEA allocation is choson, based on ELD information and the
>> number of
>> channels requested by user.
>>
>> Mains differences with HDA implementation are:
>> - Control is read only
>> - Channel swap is not supported. Consequence is that unused channel in
>> the mid of CEA audio infoframe channel mapping are considered as
>> active.
>> example for channel allocation 0x02: FL, FR, 0, FC)
>> This configuration is only available for a 4 channels stream.
>> - Channel allocation table has been reordered and HDMI 2.0 is not
>> supported.
>>
>> Arnaud Pouliquen (2):
>> DRM: add help to get ELD speaker allocation
>> ASoC: hdmi-codec: add channel mapping control
>>
>> include/drm/drm_edid.h | 13 ++
>> sound/soc/codecs/hdmi-codec.c | 346
>> +++++++++++++++++++++++++++++++++++++++++-
>> 2 files changed, 358 insertions(+), 1 deletion(-)
>
> Please pay enough attention to development cycle for Linux kernel.
>
> We're mostly on the end of development for 4.9 cycle, and review process
> for new feature might be delay for next cycle, till 4.9 release, two
> weeks later.
Oops. I was stupid just after awakening...
Anyway, we're mostly on the end of development for 4.10 cycle, and the
review process for new feature might be delay till 4.10-rc1 release, two
weeks later. During the weeks. bug fixes are preferable to be applied.
Regards
Takashi Sakamoto
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