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[RFC,0/4] drm/msm/dp: implement HPD notifications handling

Message ID 20220429192928.3697407-1-dmitry.baryshkov@linaro.org
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Series drm/msm/dp: implement HPD notifications handling | expand

Message

Dmitry Baryshkov April 29, 2022, 7:29 p.m. UTC 
USB altmodes code would send OOB notifications to the drm_connector
specified in the device tree. However as the MSM DP driver uses
drm_bridge_connector, there is no way to receive these event directly.
Implement a bridge between oob_hotplug_event and drm_bridge's hpd_notify
and use it to deliver altmode messages to the MSM DP driver

Bjorn Andersson (2):
  drm: Add HPD state to drm_connector_oob_hotplug_event()
  drm/msm/dp: Implement hpd_notify()

Dmitry Baryshkov (2):
  drm/bridge_connector: stop filtering events in
    drm_bridge_connector_hpd_cb()
  drm/bridge_connector: implement oob_hotplug_event

 drivers/gpu/drm/drm_bridge_connector.c   | 17 ++++++++++++-----
 drivers/gpu/drm/drm_connector.c          |  6 ++++--
 drivers/gpu/drm/i915/display/intel_dp.c  | 17 ++++++++++++++---
 drivers/gpu/drm/i915/i915_drv.h          |  3 +++
 drivers/gpu/drm/msm/dp/dp_display.c      | 11 +++++++++++
 drivers/gpu/drm/msm/dp/dp_display.h      |  1 +
 drivers/gpu/drm/msm/dp/dp_drm.c          |  3 +++
 drivers/gpu/drm/msm/dp/dp_drm.h          |  2 ++
 drivers/gpu/drm/msm/dp/dp_hpd.c          | 21 +++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_hpd.h          |  5 +++++
 drivers/usb/typec/altmodes/displayport.c | 10 +++-------
 include/drm/drm_connector.h              |  6 ++++--
 12 files changed, 83 insertions(+), 19 deletions(-)