[PATCH v3 0/2] add MBR type rate control for encoder

[Sachin Kumar Garg]

This patch adds support for the MBR rate-control mode in the Iris driver.

Changes in v3:
- Split into two patches: add V4L2_CID_USER_QCOM_IRIS_BASE to
  v4l2-controls.h (patch 1), and base V4L2_CID_QCOM_MBR_RATE_CONTROL
  on it (patch 2).
- Reserve 64 controls for the iris control base instead of 16, to
  leave room for future iris encoder controls.
- Link to v2: https://lore.kernel.org/r/20260720-b4-add_sc7280_mbr-v2-1-a2a86f630f57@xxxxxxxxxxxxxxxx

Changes in v2:
- Per upstream review feedback, convert MBR enablement from the
  generic V4L2_MPEG_VIDEO_BITRATE_MODE_MBR menu value to a new
  Qualcomm IRIS vendor-specific boolean control,
  V4L2_CID_QCOM_MBR_RATE_CONTROL.
- Drop the now-unneeded generic V4L2_MPEG_VIDEO_BITRATE_MODE_MBR
  enum, its "Maximum Bitrate" menu string, and its documentation
  (previously sent as a separate patch 1/2).
- Drop the separate inst_fw_cap_sc7280_enc[] table (a near-complete
  duplicate of inst_fw_cap_sm8250_enc[]); sc7280 now reuses the
  shared encoder cap table and layers in only the MBR-specific cap
  entry via the new mbr_rc_supported flag.
- Link to v1: https://lore.kernel.org/linux-media/20260213-b4-add_sc7280_mbr-v1-0-e8d95b4e4809@xxxxxxxxxxxxxxxx/

Signed-off-by: Sachin Kumar Garg <sachin.garg@xxxxxxxxxxxxxxxx>
---
Sachin Kumar Garg (2):
      media: uapi: v4l2-controls: Add control base for Qualcomm iris driver
      media: iris: add new rate control type MBR for encoder

 drivers/media/platform/qcom/iris/iris_ctrls.c      | 101 +++++++++++++++++----
 drivers/media/platform/qcom/iris/iris_ctrls.h      |   4 +
 .../platform/qcom/iris/iris_hfi_gen1_command.c     |   1 +
 .../platform/qcom/iris/iris_hfi_gen1_defines.h     |   1 +
 .../platform/qcom/iris/iris_hfi_gen2_defines.h     |   1 +
 .../platform/qcom/iris/iris_platform_common.h      |   2 +
 .../media/platform/qcom/iris/iris_platform_vpu2.c  |   1 +
 include/uapi/linux/v4l2-controls.h                 |   6 ++
 8 files changed, 100 insertions(+), 17 deletions(-)
---
base-commit: d7e7bca7169873b46e857c025c10f3336c1258d8
change-id: 20260212-b4-add_sc7280_mbr-597ac615b931

Best regards,
-- 
Sachin Kumar Garg <sachin.garg@xxxxxxxxxxxxxxxx>