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To: linux-media@vger.kernel.org Cc: mchehab@kernel.org, bod@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andersson@kernel.org, konradybcio@kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260612194417.1737009-1-atanas.filipov@oss.qualcomm.com> Content-Language: en-US From: Atanas Filipov In-Reply-To: <20260612194417.1737009-1-atanas.filipov@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI1MDExOCBTYWx0ZWRfX+okQFrBFlHTs eSwG24lGLdVuWduRwhSphvKaoPEKnjRcK1nOOOOs7rVUreEt4sBaL7AIYAbOqNxZJFsVqBi67d2 CX/TMTuo0nQvyz0cLwodgoUqx/THe95c3UXQDLchlxFWTj01B9TRIL1MRdRR5YUTNSrLpewkWIG fMLo5WZlBsOzB10/Pw5+ZnyM+60mMFimUVQAtAVA9pN1IrD7DFqRR8DPq7bIMzLJbLqeNDdoHOd gR8GQqxhSS8UnHY3p7krU2IHa14Hf1RHftsz+YiGHtHlUOZ3xIMLiBnFGnbfrSmRsRBjXH/WFZ3 THpu0SjcBVJCIbj0Q3WyHraBq2xtTp++4HYT8vbrr1NwubjMWXyKg9QT2MCRMyMcH/S1m8TQxjF gqZaS00G8Y5XaE+dnyxJuPKMcmq4SZf/ljWcIyAtxXhybMYMVCSQaKyrr3kNSfrgxy34xX1RpGo 5+qDwEsLkz7zCpRSClw== X-Authority-Analysis: v=2.4 cv=aoyCzyZV c=1 sm=1 tr=0 ts=6a3d3098 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=ybD9qRDIDfZaXNPQ7Ca20A==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=_FjdycPTHN9gxW4S0HEA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-ORIG-GUID: Q19m20IEw070RJPAGSre3fsT7fSEJ64_ X-Proofpoint-GUID: Q19m20IEw070RJPAGSre3fsT7fSEJ64_ X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI1MDExOCBTYWx0ZWRfXzRZgimZXRu+O RV9Jpe3HTG8RidNRbECHvqnz2J+42I1k/GBi5UAQ/OnhYKaDfQzeQrTl18udy3qaVnEttah78D4 A6lublnOjFSh/tKmmTh9yV7VtaksjAA= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-25_01,2026-06-24_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 spamscore=0 priorityscore=1501 clxscore=1015 adultscore=0 malwarescore=0 phishscore=0 bulkscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606250118 On 6/12/2026 10:44 PM, Atanas Filipov wrote: > The goal is to upstream a standards-based JPEG encode path using the V4L2 M2M > framework, with DT-described hardware resources and SoC DTS integration. > > Patch layout: > - 1/4: devicetree bindings for the standalone Qualcomm JPEG encoder block > - 2/4: SM8550 devicetree integration > - 3/4: SM8250 devicetree integration > - 4/4: qcom-jenc V4L2 mem2mem encoder driver > > Supported compatibles: > - qcom,sm8250-jenc > - qcom,qcm6490-jenc > - qcom,sm8550-jenc > > Driver scope and design choices: > - uses the standard V4L2 mem2mem + vb2 workflow > - maps runtime resources from DT (clocks/interconnects/iommu/etc.) > - keeps userspace interface within existing V4L2 JPEG controls/framework > - uses runtime PM for balanced power transitions across stream/probe/remove > > Functional validation (hardware): > - platforms (codename / SoC / compatible / board): > - Kona / SM8250 (QRB5165 class) / qcom,sm8250-jenc / RB5 > - Kailua / SM8550 / qcom,sm8550-jenc / RB5 Gen2 > - Kodiak / QCM6490 (QCS6490 derivative line) / qcom,qcm6490-jenc / RB3 Gen2 > - validated SoC coverage: SM8250, SM8550, QCM6490 > - tested flows: > - single-frame encode: 8192x8192 NV12 (v4l2-ctl) > - single-frame encode: 1920x1080 NV12 (v4l2-ctl) > - single-frame encode: 1920x1080 GREY (v4l2-ctl) > - GStreamer NV12 pipeline to JPEG files (v4l2jpegenc) > - GStreamer GRAY8 pipeline to MJPEG output (v4l2jpegenc) > > Known limitations: > - scaling is not supported > - width and height must be aligned to 16 pixels > > Atanas Filipov (4): > dt-bindings: media: qcom: Add JPEG encoder binding > arm64: dts: qcom: sm8550: Add JPEG encoder node > arm64: dts: qcom: sm8250: Add JPEG encoder node > media: qcom: jpeg: Add Qualcomm JPEG V4L2 encoder > > .../bindings/media/qcom,jpeg-encoder.yaml | 142 ++ > arch/arm64/boot/dts/qcom/sm8250.dtsi | 35 + > arch/arm64/boot/dts/qcom/sm8550.dtsi | 42 + > drivers/media/platform/qcom/Kconfig | 1 + > drivers/media/platform/qcom/Makefile | 1 + > drivers/media/platform/qcom/jpeg/Kconfig | 18 + > drivers/media/platform/qcom/jpeg/Makefile | 9 + > .../media/platform/qcom/jpeg/qcom_jenc_defs.h | 244 +++ > .../media/platform/qcom/jpeg/qcom_jenc_dev.c | 336 ++++ > .../media/platform/qcom/jpeg/qcom_jenc_dev.h | 107 ++ > .../media/platform/qcom/jpeg/qcom_jenc_hdr.c | 360 ++++ > .../media/platform/qcom/jpeg/qcom_jenc_hdr.h | 119 ++ > .../media/platform/qcom/jpeg/qcom_jenc_ops.c | 1658 +++++++++++++++++ > .../media/platform/qcom/jpeg/qcom_jenc_ops.h | 52 + > .../media/platform/qcom/jpeg/qcom_jenc_res.c | 226 +++ > .../media/platform/qcom/jpeg/qcom_jenc_res.h | 54 + > .../qcom/jpeg/qcom_jenc_v420_hw_info.h | 529 ++++++ > .../media/platform/qcom/jpeg/qcom_jenc_v4l2.c | 1109 +++++++++++ > .../media/platform/qcom/jpeg/qcom_jenc_v4l2.h | 25 + > 19 files changed, 5067 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/qcom,jpeg-encoder.yaml > create mode 100644 drivers/media/platform/qcom/jpeg/Kconfig > create mode 100644 drivers/media/platform/qcom/jpeg/Makefile > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_defs.h > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_dev.c > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_dev.h > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_hdr.c > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_hdr.h > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_ops.c > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_ops.h > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_res.c > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_res.h > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_v420_hw_info.h > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_v4l2.c > create mode 100644 drivers/media/platform/qcom/jpeg/qcom_jenc_v4l2.h > > > base-commit: e7ae89a0c97ce2b68b0983cd01eda67cf373517d Hi all, Thank you for the review. v2 has been sent and addresses all comments: https://lore.kernel.org/linux-media/20260625133828.3221781-1-atanas.filipov@oss.qualcomm.com/T/#t Regards, Atanas