Reviewed-by: Allen Chen <allen.c...@ite.com.tw>
-----Original Message-----
From: Pin-Yen Lin <treapk...@chromium.org>
Sent: Thursday, July 14, 2022 5:39 PM
To: Andrzej Hajda <andrzej.ha...@intel.com>; Neil Armstrong
<narmstr...@baylibre.com>; Robert Foss <robert.f...@linaro.org>; Laurent
Pinchart <laurent.pinch...@ideasonboard.com>; Jonas Karlman <jo...@kwiboo.se>;
Jernej Skrabec <jernej.skra...@gmail.com>; David Airlie <airl...@linux.ie>;
Daniel Vetter <dan...@ffwll.ch>
Cc: Hsin-Yi Wang <hsi...@chromium.org>; Allen Chen (陳柏宇)
<allen.c...@ite.com.tw>; Pin-Yen Lin <treapk...@chromium.org>;
dri-devel@lists.freedesktop.org; linux-ker...@vger.kernel.org
Subject: [PATCH v2] drm/bridge: it6505: Power on downstream device in
.atomic_enable
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 <treapk...@chromium.org>
---
Changes in v2:
- Update the typo in the summary (power on --> power off)
- Re-write the commit message to make it clearer.
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);
--
2.37.0.144.g8ac04bfd2-goog
