kernel/linux.git/drivers/media/platform/qcom/iris/iris_vb2.c, branch linux-7.0.y

media: iris: Prevent output buffer queuing before stream-on completes

2026-01-20T13:00:12+00:00

During normal playback, stream-on for input is followed by output, and only after input stream-on does actual streaming begin. However, when gst-play performs a seek, both input and output streams are stopped, and on restart, output stream-on occurs first. At this point, firmware has not yet started streaming. Queuing output buffers before the firmware begins streaming causes it to process buffers in an invalid state, leading to an error response. These buffers are returned to the driver as errors, forcing the driver into an error state and stopping playback. Fix this by deferring output buffer queuing until stream-on completes. Input buffers can still be queued before stream-on as required. Fixes: 92e007ca5ab6 ("media: iris: Add V4L2 streaming support for encoder video device") Signed-off-by: Vishnu Reddy Signed-off-by: Dikshita Agarwal Reviewed-by: Vikash Garodia Cc: stable@vger.kernel.org Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

Revert "media: iris: Add sanity check for stop streaming"

2026-01-20T13:00:12+00:00

This reverts commit ad699fa78b59241c9d71a8cafb51525f3dab04d4. Revert the check that skipped stop_streaming when the instance was in IRIS_INST_ERROR, as it caused multiple regressions: 1. Buffers were not returned to vb2 when the instance was already in error state, triggering warnings in the vb2 core because buffer completion was skipped. 2. If a session failed early (e.g. unsupported configuration), the instance transitioned to IRIS_INST_ERROR. When userspace attempted to stop streaming for cleanup, stop_streaming was skipped due to the added check, preventing proper teardown and leaving the firmware in an inconsistent state. Fixes: ad699fa78b59 ("media: iris: Add sanity check for stop streaming") Signed-off-by: Dikshita Agarwal Reviewed-by: Vikash Garodia Cc: stable@vger.kernel.org Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: Add sanity check for stop streaming

2025-11-06T10:18:10+00:00

Add sanity check in iris_vb2_stop_streaming. If inst->state is already IRIS_INST_ERROR, we should skip the stream_off operation because it would still send packets to the firmware. In iris_kill_session, inst->state is set to IRIS_INST_ERROR and session_close is executed, which will kfree(inst_hfi_gen2->packet). If stop_streaming is called afterward, it will cause a crash. Fixes: 11712ce70f8e5 ("media: iris: implement vb2 streaming ops") Cc: stable@vger.kernel.org Reviewed-by: Bryan O'Donoghue Reviewed-by: Dikshita Agarwal Signed-off-by: Wangao Wang Reviewed-by: Vikash Garodia [bod: remove qcom from patch title] Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: Add support for buffer management ioctls for encoder device

2025-09-10T07:02:46+00:00

Implement support for queuing and dequeuing input and output buffers for the encoder video device using the appropriate V4L2 buffer management ioctls. This enables userspace applications to manage streaming buffers required for encoding operations. Tested-by: Vikash Garodia # X1E80100 Reviewed-by: Vikash Garodia Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-HDK Signed-off-by: Dikshita Agarwal Tested-by: Bryan O'Donoghue # x1e80100-crd [bod: drop dead code size_enc_single_pipe()] Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: Add V4L2 streaming support for encoder video device

2025-09-10T07:02:42+00:00

Add support for V4L2 streaming operations on the encoder video device. During stream-on, configure mandatory properties on the respective planes and notify the firmware to initiate an encode session. Tested-by: Vikash Garodia # X1E80100 Reviewed-by: Vikash Garodia Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-HDK Signed-off-by: Dikshita Agarwal Tested-by: Bryan O'Donoghue # x1e80100-crd [bod: add sm8750 enc/dec declarations during merge process] Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: Add support for G/S_PARM for encoder video device

2025-09-10T07:02:38+00:00

Add supports for the G/S_PARM V4L2 ioctls for encoder video device with necessary hooks. This allows userspace to query the current streaming parameters such as frame intervals and set desired streaming parameters primarily the frame rate. Tested-by: Vikash Garodia # X1E80100 Reviewed-by: Vikash Garodia Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-HDK Signed-off-by: Dikshita Agarwal Tested-by: Bryan O'Donoghue # x1e80100-crd Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: Fix port streaming handling

2025-09-10T07:02:31+00:00

The previous check to block capture port streaming before output port was incorrect and caused some valid usecase to fail. While removing that check allows capture port to enter streaming independently, it also introduced firmware errors due to premature queuing of DPB buffers before the firmware session was fully started which happens only when streamon is called on output port. Fix this by deferring DPB buffer queuing to the firmware until both capture and output are streaming and state is 'STREAMING'. Fixes: 11712ce70f8e ("media: iris: implement vb2 streaming ops") Cc: stable@vger.kernel.org Reviewed-by: Vikash Garodia Tested-by: Vikash Garodia # X1E80100 Reviewed-by: Bryan O'Donoghue Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-HDK Signed-off-by: Dikshita Agarwal Tested-by: Bryan O'Donoghue # x1e80100-crd Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: Improve last flag handling

2025-07-03T09:02:44+00:00

Improve the handling of the V4L2_BUF_FLAG_LAST flag in the driver: - Ensure that the last flag is not sent multiple times. - Attach the last flag to the first capture buffer returned during flush, triggered by a sequence change, addressing cases where the firmware does not set the last flag. Reviewed-by: Vikash Garodia Reviewed-by: Bryan O'Donoghue Tested-by: Neil Armstrong # on SM8550-QRD Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-QRD Tested-by: Neil Armstrong # on SM8650-HDK Signed-off-by: Dikshita Agarwal Tested-by: Vikash Garodia # on sa8775p-ride Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: Fix buffer preparation failure during resolution change

2025-07-03T09:02:44+00:00

When the resolution changes, the driver internally updates the width and height, but the client continue to queue buffers with the older resolution until the last flag is received. This results in a mismatch when the buffers are prepared, causing failure due to outdated size. Introduce a check to prevent size validation during buffer preparation if a resolution reconfiguration is in progress, to handle this. Cc: stable@vger.kernel.org Fixes: 17f2a485ca67 ("media: iris: implement vb2 ops for buf_queue and firmware response") Reviewed-by: Vikash Garodia Tested-by: Neil Armstrong # on SM8550-QRD Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-QRD Tested-by: Neil Armstrong # on SM8650-HDK Signed-off-by: Dikshita Agarwal Tested-by: Vikash Garodia # on sa8775p-ride Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil

media: iris: implement power scaling for vpu2 and vpu3

2025-02-07T10:51:55+00:00

Implement power scaling including a specific vpu2 and vpu3 calculation for clock and bus bandwidth, which depends on the hardware configuration, codec format, resolution and frame rate. Signed-off-by: Vedang Nagar Tested-by: Stefan Schmidt # x1e80100 (Dell XPS 13 9345) Reviewed-by: Stefan Schmidt Tested-by: Neil Armstrong # on SM8550-QRD Tested-by: Neil Armstrong # on SM8550-HDK Signed-off-by: Dikshita Agarwal Signed-off-by: Hans Verkuil