[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20230314110043.2139111-1-treapking@chromium.org>
Date: Tue, 14 Mar 2023 19:00:42 +0800
From: Pin-yen Lin <treapking@...omium.org>
To: Douglas Anderson <dianders@...omium.org>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <rfoss@...nel.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>
Cc: Enric Balletbo i Serra <enric.balletbo@...labora.com>,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Pin-yen Lin <treapking@...omium.org>
Subject: [PATCH 1/2] drm/bridge: ps8640: Skip redundant bridge enable
Skip the drm_bridge_chain_pre_enable call when the bridge is already
pre_enabled. This make pre_enable and post_disable (thus
pm_runtime_get/put) symmetric.
Fixes: 46f206304db0 ("drm/bridge: ps8640: Rework power state handling")
Signed-off-by: Pin-yen Lin <treapking@...omium.org>
---
drivers/gpu/drm/bridge/parade-ps8640.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
index 4b361d7d5e44..08de501c436e 100644
--- a/drivers/gpu/drm/bridge/parade-ps8640.c
+++ b/drivers/gpu/drm/bridge/parade-ps8640.c
@@ -557,7 +557,8 @@ static struct edid *ps8640_bridge_get_edid(struct drm_bridge *bridge,
* EDID, for this chip, we need to do a full poweron, otherwise it will
* fail.
*/
- drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state);
+ if (poweroff)
+ drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state);
edid = drm_get_edid(connector,
ps_bridge->page[PAGE0_DP_CNTL]->adapter);
--
2.40.0.rc1.284.g88254d51c5-goog
Powered by blists - more mailing lists