On Sat, 16 Sept 2023 at 00:38, Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx> wrote:
>
> Currently DP driver use drm_helper_hpd_irq_event(), bypassing drm bridge
> framework, to report HPD status changes to user space frame work.
> Replace it with drm_bridge_hpd_notify() since DP driver is part of drm
> bridge.
>
> Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Also see the comment below.
> ---
> drivers/gpu/drm/msm/dp/dp_display.c | 20 ++------------------
> 1 file changed, 2 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index 18d16c7..59f9d85 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -356,26 +356,10 @@ static bool dp_display_is_sink_count_zero(struct dp_display_private *dp)
> (dp->link->sink_count == 0);
> }
>
> -static void dp_display_send_hpd_event(struct msm_dp *dp_display)
> -{
> - struct dp_display_private *dp;
> - struct drm_connector *connector;
> -
> - dp = container_of(dp_display, struct dp_display_private, dp_display);
> -
> - connector = dp->dp_display.connector;
> - drm_helper_hpd_irq_event(connector->dev);
> -}
> -
> static int dp_display_send_hpd_notification(struct dp_display_private *dp,
> bool hpd)
> {
> - if ((hpd && dp->dp_display.link_ready) ||
> - (!hpd && !dp->dp_display.link_ready)) {
> - drm_dbg_dp(dp->drm_dev, "HPD already %s\n",
> - (hpd ? "on" : "off"));
> - return 0;
> - }
> + struct drm_bridge *bridge = dp->dp_display.bridge;
>
> /* reset video pattern flag on disconnect */
> if (!hpd)
Note, this part (resetting the video_test and setting of is_connected)
should be moved to the dp_bridge_hpd_notify() too. Please ignore this
comment if this is handled later in the series.
> @@ -385,7 +369,7 @@ static int dp_display_send_hpd_notification(struct dp_display_private *dp,
>
> drm_dbg_dp(dp->drm_dev, "type=%d hpd=%d\n",
> dp->dp_display.connector_type, hpd);
> - dp_display_send_hpd_event(&dp->dp_display);
> + drm_bridge_hpd_notify(bridge, dp->dp_display.link_ready);
>
> return 0;
> }
> --
> 2.7.4
>
--
With best wishes
Dmitry
