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drm/bridge: it6505: Power on downstream device in .atomic_enable
author
Pin-Yen Lin
<treapking@chromium.org>
Thu, 14 Jul 2022 09:39:20 +0000
(17:39 +0800)
committer
Robert Foss
<robert.foss@linaro.org>
Mon, 18 Jul 2022 11:27:23 +0000
(13:27 +0200)
Send DPCD DP_SET_POWER_D0 command to the monitor in .atomic_enable
callback. Without this command, some monitors won't show up again after
changing the resolution.
Fixes:
46ca7da7f1e8
("drm/bridge: it6505: Send DPCD SET_POWER to downstream")
Signed-off-by: Pin-Yen Lin <treapking@chromium.org>
Reviewed-by: Allen Chen <allen.chen@ite.com.tw>
Fixes:
46ca7da7f1e8
("drm/bridge: it6505: Send DPCD SET_POWER to downstream")
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link:
https://patchwork.freedesktop.org/patch/msgid/20220714173715.v2.1.I85af54e9ceda74ec69f661852825845f983fc343@changeid
drivers/gpu/drm/bridge/ite-it6505.c
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diff --git
a/drivers/gpu/drm/bridge/ite-it6505.c
b/drivers/gpu/drm/bridge/ite-it6505.c
index
4b673c4
..
e562603
100644
(file)
--- 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);