On 9/15/2023 5:41 PM, Dmitry Baryshkov wrote:
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.
I think keep them here is better since eDP does not populate hpd_enable,
hpd_disable and hpd_notify at edp_bridge_ops at drm_bridge_attach().
Keep them here will work for both eDP and DP.
@@ -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
