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

[Abhinav Kumar]

Adding kuogee here to keep him in the loop.

We will also review/test these.

Thanks

Abhinav

On 4/29/2022 12:29 PM, Dmitry Baryshkov wrote:
> 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(-)
>