linux-kernel - Re: [PATCH 1/2] media: iris: Add support for QC08C format for decoder

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Message-ID: <66d3b851-5b29-ca88-53de-a4126c2b5366@oss.qualcomm.com>
Date: Mon, 6 Oct 2025 11:51:19 +0530
From: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
To: Bryan O'Donoghue <bod@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] media: iris: Add support for QC08C format for decoder



On 10/1/2025 8:34 PM, Bryan O'Donoghue wrote:
> On 01/10/2025 09:36, Neil Armstrong wrote:
>> On 9/24/25 15:28, Bryan O'Donoghue wrote:
>>> On 19/09/2025 16:47, Dikshita Agarwal wrote:
>>>> Introduce handling for the QC08C format in the decoder.
>>>> Update format checks and configuration to enable decoding of QC08C
>>>> streams.
>>>
>>> Since QC08C is a Qualcomm specific pixel format, you should detail in
>>> your commit log exactly what the packing/ordering of pixels is.
>>>
>>> In other words tell the reader more about QC08C.
>>
>> This has been upstreamed 3y ago for venus, which is the same as iris:
>> https://lore.kernel.org/all/20220117155559.234026-1-stanimir.varbanov@linaro.org/
>>
>> No need to re-explain it for iris, the format is the same.
>>
>> Neil
> Yeah no, at a minimum the explanation of NV12 + UBWC should appear in the
> commit log for this format.

Please see [1] in case it was missed

[1]:
https://lore.kernel.org/linux-media/10bb819d-105b-5471-b3a6-774fce134eb6@oss.qualcomm.com/

Thanks,
Dikshita
> 
> thx
> ---
> bod