linux-kernel - Re: [PATCH 0/2] Add support for QC08C format in iris driver

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Message-ID: <b2538934-bda7-45e1-b368-8dc4d2c6f71b@linaro.org>
Date: Wed, 1 Oct 2025 10:39:08 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
 Vikash Garodia <vikash.garodia@....qualcomm.com>,
 Abhinav Kumar <abhinav.kumar@...ux.dev>, Bryan O'Donoghue <bod@...nel.org>,
 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 0/2] Add support for QC08C format in iris driver

Hi,

On 9/19/25 17:47, Dikshita Agarwal wrote:
> Add support for the QC08C color format in both the encoder and decoder
> paths of the iris driver. The changes include:
> 
> - Adding QC08C format handling in the driver for both encoding and
> decoding.
> - Updating format enumeration to properly return supported formats.
> - Ensuring the correct HFI format is set for firmware communication.
> -Making all related changes required for seamless integration of QC08C
> support.
> 
> The changes have been validated using v4l2-ctl, compliance, and GStreamer (GST) tests.
> Both GST and v4l2-ctl tests were performed using the NV12 format, as
> these clients do not support the QCOM-specific QC08C format, and all
> tests passed successfully.

Sorry but this means you didn't test the full decoding and encoding with GST and v4l2-ctl using QC08C ?
So how did you test ?

Thanks,
Neil

> 
> During v4l2-ctl testing, a regression was observed when using the NV12
> color format after adding QC08C support. A fix for this regression has
> also been posted [1].
> 
> [1]: https://lore.kernel.org/linux-media/20250918103235.4066441-1-dikshita.agarwal@oss.qualcomm.com/T/#u
> 
> Signed-off-by: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
> ---
> Dikshita Agarwal (2):
>        media: iris: Add support for QC08C format for decoder
>        media: iris: Add support for QC08C format for encoder
> 
>   drivers/media/platform/qcom/iris/iris_buffer.c     | 17 ++++--
>   .../platform/qcom/iris/iris_hfi_gen1_command.c     | 15 ++++--
>   .../platform/qcom/iris/iris_hfi_gen2_command.c     | 21 +++++++-
>   .../platform/qcom/iris/iris_hfi_gen2_defines.h     |  1 +
>   drivers/media/platform/qcom/iris/iris_instance.h   |  7 ++-
>   .../media/platform/qcom/iris/iris_platform_gen2.c  |  1 +
>   drivers/media/platform/qcom/iris/iris_utils.c      |  3 +-
>   drivers/media/platform/qcom/iris/iris_vdec.c       | 61 ++++++++++++++++++----
>   drivers/media/platform/qcom/iris/iris_venc.c       | 59 +++++++++++++++++----
>   9 files changed, 152 insertions(+), 33 deletions(-)
> ---
> base-commit: 40b7a19f321e65789612ebaca966472055dab48c
> change-id: 20250918-video-iris-ubwc-enable-87eac6f41fa4
> 
> Best regards,