On Thu, Dec 05, 2024 at 08:32:00PM -0800, Abhinav Kumar wrote:
> For MST cases, EDID is handled through AUX sideband messaging.
> Skip the EDID read during hotplug handle for MST cases.
But why? Isn't EDID being read at the hotplug time to update
drm_connector's data?
>
> Signed-off-by: Abhinav Kumar <quic_abhin...@quicinc.com>
> ---
> drivers/gpu/drm/msm/dp/dp_display.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
> b/drivers/gpu/drm/msm/dp/dp_display.c
> index
> 033d238e956263c1212fce45aab01316ef341edb..a67bc7c1b83a5a9996435804ff7337f72dae93a0
> 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -420,9 +420,11 @@ static int msm_dp_display_process_hpd_high(struct
> msm_dp_display_private *dp)
> if (rc)
> goto end;
>
> - rc = msm_dp_panel_read_edid(dp->panel, connector);
> - if (rc)
> - goto end;
> + if (dp->max_stream <= DEFAULT_STREAM_COUNT ||
> !msm_dp_panel_read_mst_cap(dp->panel)) {
> + rc = msm_dp_panel_read_edid(dp->panel, connector);
> + if (rc)
> + goto end;
> + }
>
> msm_dp_link_process_request(dp->link);
>
>
> --
> 2.34.1
>
--
With best wishes
Dmitry
