[PATCH v3 00/11] drm/connector: hdmi: limit infoframes per driver capabilities

[Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>]

It's not uncommon for the particular device to support only a subset of
HDMI InfoFrames. It's not a big problem for the kernel, since we adopted
a model of ignoring the unsupported Infoframes, but it's a bigger
problem for the userspace: we end up having files in debugfs which do
mot match what is being sent on the wire.

Sort that out, making sure that all interfaces are consistent.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
---
Changes in v3:
- Fixed supported infoframes initialization (Liu Ying)
- Implemented separate flags for DRM-generated InfoFrames and
  hardware-generated ones
- Warn if required InfoFrames are not supported by the driver (Maxime)
- Changed drivers to error out if the DRM framework requires the
  unsupported InfoFrame (Maxime)
- Implemented DRM_BRIDGE_OP_HDMI and DRM_BRIDGE_OP_HDMI_AUDIO for
  Lontium lt9611uxc bridge.
- Link to v2: https://lore.kernel.org/r/20250819-drm-limit-infoframes-v2-0-7595dda24fbd@oss.qualcomm.com

Changes in v2:
- Corrected whitespace / newline issues & other small syntax fixes (Liu
  Ying)
- Added audio to the list of InfoFrames supported by the VC4 driver (Liu
  Ying)
- Changed drm_dbg_kms() to drm_warn_once() in the Audio InfoFrame update
  code (Liu Ying)
- Corrected subject for ITE IT6263 patch (Liu Ying)
- Added patch, dropping default list of InfoFrames in
  drm_bridge_connector.
- Link to v1: https://lore.kernel.org/r/20250816-drm-limit-infoframes-v1-0-6dc17d5f07e9@oss.qualcomm.com

---
Dmitry Baryshkov (11):
      drm/connector: let drivers declare infoframes as unsupported
      drm/bridge: adv7511: declare supported infoframes
      drm/bridge: ite-it6263: declare supported infoframes
      drm/bridge: lontium-lt9611: declare supported infoframes
      drm/bridge: synopsys/dw-hdmi-qp: declare supported infoframes
      drm/msm: hdmi: declare supported infoframes
      drm/rockchip: rk3066: declare supported infoframes
      drm/display: bridge_connector: drop default list for HDMI Infoframes
      drm/connector: verify that HDMI connectors support necessary InfoFrames
      drm/display: hdmi-audio: warn if HDMI connector doesn't support Audio IF
      drm/bridge: lontium-lt9611uxc: switch to HDMI audio helpers

 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c       |  10 +-
 drivers/gpu/drm/bridge/ite-it6263.c                |  11 +-
 drivers/gpu/drm/bridge/lontium-lt9611.c            |  11 +-
 drivers/gpu/drm/bridge/lontium-lt9611uxc.c         | 130 +++++++++------------
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c       |   7 +-
 drivers/gpu/drm/display/drm_bridge_connector.c     |   2 +
 drivers/gpu/drm/display/drm_hdmi_audio_helper.c    |  12 ++
 drivers/gpu/drm/display/drm_hdmi_state_helper.c    |  53 ++++++++-
 drivers/gpu/drm/drm_connector.c                    |  17 +++
 drivers/gpu/drm/drm_debugfs.c                      |  16 ++-
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c             |   8 +-
 drivers/gpu/drm/rockchip/inno_hdmi.c               |   6 +-
 drivers/gpu/drm/rockchip/rk3066_hdmi.c             |   5 +-
 drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c             |   4 +-
 drivers/gpu/drm/tests/drm_connector_test.c         |  49 ++++++++
 drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c |   9 ++
 drivers/gpu/drm/vc4/vc4_hdmi.c                     |   6 +
 include/drm/drm_bridge.h                           |  14 +++
 include/drm/drm_connector.h                        |  39 +++++++
 19 files changed, 306 insertions(+), 103 deletions(-)
---
base-commit: f4028ef65dc4fe9010bcc017597fe0fea6479097
change-id: 20250815-drm-limit-infoframes-e782fa7f3360

Best regards,
-- 
With best wishes
Dmitry