A lot of DisplayPort bridges use HDMI Codec in order to provide audio support. Present DRM HDMI Audio support has been written with the HDMI and in particular DRM HDMI Connector framework support, however those audio helpers can be easily reused for DisplayPort drivers too. Patches by Hermes Wu that targeted implementing HDMI Audio support in the iTE IT6506 driver pointed out the necessity of allowing one to use generic audio helpers for DisplayPort drivers, as otherwise each driver has to manually (and correctly) implement the get_eld() and plugged_cb support. Implement necessary integration in drm_bridge_connector and provide an example implementation in the msm/dp driver. The plan is to land core parts via the drm-misc-next tree and msm patch via the msm-next tree. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> --- Changes in v2: - Added drm_connector_attach_dp_subconnector_property() patches - Link to v1: https://lore.kernel.org/r/20250206-dp-hdmi-audio-v1-0-8aa14a8c0d4d@xxxxxxxxxx --- Dmitry Baryshkov (3): drm/display: bridge-connector: add DisplayPort bridges drm/display: bridge_connector: add DisplayPort subconnector property drm/msm/dp: reuse generic HDMI codec implementation drivers/gpu/drm/display/drm_bridge_connector.c | 68 ++++++++++--- drivers/gpu/drm/msm/Kconfig | 1 + drivers/gpu/drm/msm/dp/dp_audio.c | 131 +++---------------------- drivers/gpu/drm/msm/dp/dp_audio.h | 27 ++--- drivers/gpu/drm/msm/dp/dp_display.c | 31 ++---- drivers/gpu/drm/msm/dp/dp_display.h | 6 -- drivers/gpu/drm/msm/dp/dp_drm.c | 11 ++- include/drm/drm_bridge.h | 14 ++- 8 files changed, 101 insertions(+), 188 deletions(-) --- base-commit: ed58d103e6da15a442ff87567898768dc3a66987 change-id: 20250206-dp-hdmi-audio-15d9fdbebb9f Best regards, -- Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
