From: Pin-yen Lin <treapking@chromium.org>
To: Andrzej Hajda <andrzej.hajda@intel.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Robert Foss <robert.foss@linaro.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
dri-devel@lists.freedesktop.org
Cc: Allen Chen <allen.chen@ite.com.tw>,
Hsin-Yi Wang <hsinyi@chromium.org>,
Pin-yen Lin <treapking@chromium.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH] drm/bridge: it6505: Fix the order of DP_SET_POWER commands
Date: Fri, 26 Aug 2022 18:32:31 +0800 [thread overview]
Message-ID: <20220826103231.2504799-1-treapking@chromium.org> (raw)
Send DP_SET_POWER_D3 command to the downstream before stopping DP, so the
suspend process will not be interrupted by the HPD interrupt. Also modify
the order in .atomic_enable callback to make the callbacks symmetric.
Fixes: 77c18864c5fc ("drm/bridge: it6505: Send DP_SET_POWER_D3 before stopping DP")
Signed-off-by: Pin-yen Lin <treapking@chromium.org>
---
drivers/gpu/drm/bridge/ite-it6505.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index f9251ec49bf0..2bb957cffd94 100644
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -2951,9 +2951,6 @@ 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);
@@ -2963,6 +2960,9 @@ static void it6505_bridge_atomic_enable(struct drm_bridge *bridge,
it6505_int_mask_enable(it6505);
it6505_video_reset(it6505);
+
+ it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link,
+ DP_SET_POWER_D0);
}
static void it6505_bridge_atomic_disable(struct drm_bridge *bridge,
@@ -2974,9 +2974,9 @@ static void it6505_bridge_atomic_disable(struct drm_bridge *bridge,
DRM_DEV_DEBUG_DRIVER(dev, "start");
if (it6505->powered) {
- it6505_video_disable(it6505);
it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link,
DP_SET_POWER_D3);
+ it6505_video_disable(it6505);
}
}
--
2.37.2.672.g94769d06f0-goog
reply other threads:[~2022-08-26 10:32 UTC|newest]
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