lkml.org 
[lkml]   [2022]   [Jun]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] drm/bridge: it6505: Power off downstream device in .atomic_enable
Date
Power off the downstream device in .atomic_enable callback, so the
external display shows up again after changing resolution.

Fixes: 46ca7da7f1e8 ("drm/bridge: it6505: Send DPCD SET_POWER to downstream")

Signed-off-by: Pin-Yen Lin <treapking@chromium.org>
---

drivers/gpu/drm/bridge/ite-it6505.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index 4b673c4792d7..e5626035f311 100644
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -2945,6 +2945,9 @@ static void it6505_bridge_atomic_enable(struct drm_bridge *bridge,
if (ret)
dev_err(dev, "Failed to setup AVI infoframe: %d", ret);

+ it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link,
+ DP_SET_POWER_D0);
+
it6505_update_video_parameter(it6505, mode);

ret = it6505_send_video_infoframe(it6505, &frame);
--
2.36.1.255.ge46751e96f-goog
\
 
 \ /
  Last update: 2022-06-06 09:25    [W:0.025 / U:0.084 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site