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From: Chris Zhong <zyw@rock-chips.com>
To: dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, mark.yao@rock-chips.com,
	groeck@chromium.org, seanpaul@chromium.org, zyw@rock-chips.com,
	David Airlie <airlied@linux.ie>, Heiko Stuebner <heiko@sntech.de>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v17 2/7] drm/rockchip: cdn-dp: Load firmware if no monitor connected
Date: Sun,  5 Feb 2017 15:54:57 +0800	[thread overview]
Message-ID: <1486281302-28200-3-git-send-email-zyw@rock-chips.com> (raw)
In-Reply-To: <1486281302-28200-1-git-send-email-zyw@rock-chips.com>

From: Guenter Roeck <groeck@chromium.org>

If no monitor is connected, suspend/resume cycles result in firmware
load errors because the driver attempts to load the firmware while
the system is in suspend state. This results in a kernel warning and
traceback.

Loading the firmware during boot fixes the problem. Note that we can not
just call schedule_work conditionally in cdn_dp_pd_event() if the insertion
status changed. The problem would still be seen if a monitor is connected
for the first time during suspend.

Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
---

Changes in v17: None

 drivers/gpu/drm/rockchip/cdn-dp-core.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index 7db2508..b8d0dd7 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -1021,7 +1021,6 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 	struct cdn_dp_port *port;
 	struct drm_device *drm_dev = data;
 	int ret, i;
-	bool schedule_event = false;
 
 	ret = cdn_dp_parse_dt(dp);
 	if (ret < 0)
@@ -1083,15 +1082,11 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 				      "register EXTCON_DISP_DP notifier err\n");
 			goto err_free_connector;
 		}
-
-		if (extcon_get_state(port->extcon, EXTCON_DISP_DP))
-			schedule_event = true;
 	}
 
 	pm_runtime_enable(dev);
 
-	if (schedule_event)
-		schedule_work(&dp->event_work);
+	schedule_work(&dp->event_work);
 
 	return 0;
 
-- 
2.6.3

WARNING: multiple messages have this Message-ID (diff)
From: Chris Zhong <zyw@rock-chips.com>
To: dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, zyw@rock-chips.com,
	groeck@chromium.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v17 2/7] drm/rockchip: cdn-dp: Load firmware if no monitor connected
Date: Sun,  5 Feb 2017 15:54:57 +0800	[thread overview]
Message-ID: <1486281302-28200-3-git-send-email-zyw@rock-chips.com> (raw)
In-Reply-To: <1486281302-28200-1-git-send-email-zyw@rock-chips.com>

From: Guenter Roeck <groeck@chromium.org>

If no monitor is connected, suspend/resume cycles result in firmware
load errors because the driver attempts to load the firmware while
the system is in suspend state. This results in a kernel warning and
traceback.

Loading the firmware during boot fixes the problem. Note that we can not
just call schedule_work conditionally in cdn_dp_pd_event() if the insertion
status changed. The problem would still be seen if a monitor is connected
for the first time during suspend.

Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
---

Changes in v17: None

 drivers/gpu/drm/rockchip/cdn-dp-core.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index 7db2508..b8d0dd7 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -1021,7 +1021,6 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 	struct cdn_dp_port *port;
 	struct drm_device *drm_dev = data;
 	int ret, i;
-	bool schedule_event = false;
 
 	ret = cdn_dp_parse_dt(dp);
 	if (ret < 0)
@@ -1083,15 +1082,11 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 				      "register EXTCON_DISP_DP notifier err\n");
 			goto err_free_connector;
 		}
-
-		if (extcon_get_state(port->extcon, EXTCON_DISP_DP))
-			schedule_event = true;
 	}
 
 	pm_runtime_enable(dev);
 
-	if (schedule_event)
-		schedule_work(&dp->event_work);
+	schedule_work(&dp->event_work);
 
 	return 0;
 
-- 
2.6.3

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: zyw@rock-chips.com (Chris Zhong)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v17 2/7] drm/rockchip: cdn-dp: Load firmware if no monitor connected
Date: Sun,  5 Feb 2017 15:54:57 +0800	[thread overview]
Message-ID: <1486281302-28200-3-git-send-email-zyw@rock-chips.com> (raw)
In-Reply-To: <1486281302-28200-1-git-send-email-zyw@rock-chips.com>

From: Guenter Roeck <groeck@chromium.org>

If no monitor is connected, suspend/resume cycles result in firmware
load errors because the driver attempts to load the firmware while
the system is in suspend state. This results in a kernel warning and
traceback.

Loading the firmware during boot fixes the problem. Note that we can not
just call schedule_work conditionally in cdn_dp_pd_event() if the insertion
status changed. The problem would still be seen if a monitor is connected
for the first time during suspend.

Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
---

Changes in v17: None

 drivers/gpu/drm/rockchip/cdn-dp-core.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index 7db2508..b8d0dd7 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -1021,7 +1021,6 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 	struct cdn_dp_port *port;
 	struct drm_device *drm_dev = data;
 	int ret, i;
-	bool schedule_event = false;
 
 	ret = cdn_dp_parse_dt(dp);
 	if (ret < 0)
@@ -1083,15 +1082,11 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 				      "register EXTCON_DISP_DP notifier err\n");
 			goto err_free_connector;
 		}
-
-		if (extcon_get_state(port->extcon, EXTCON_DISP_DP))
-			schedule_event = true;
 	}
 
 	pm_runtime_enable(dev);
 
-	if (schedule_event)
-		schedule_work(&dp->event_work);
+	schedule_work(&dp->event_work);
 
 	return 0;
 
-- 
2.6.3

  parent reply	other threads:[~2017-02-05  7:56 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-05  7:54 [PATCH v17 0/7] drm/rockchip: Add CDN DP driver Chris Zhong
2017-02-05  7:54 ` Chris Zhong
2017-02-05  7:54 ` Chris Zhong
2017-02-05  7:54 ` [PATCH v17 1/7] drm/rockchip: cdn-dp: add cdn DP support for rk3399 Chris Zhong
2017-02-05  7:54   ` Chris Zhong
2017-02-05  7:54   ` Chris Zhong
2017-02-05  7:54 ` Chris Zhong [this message]
2017-02-05  7:54   ` [PATCH v17 2/7] drm/rockchip: cdn-dp: Load firmware if no monitor connected Chris Zhong
2017-02-05  7:54   ` Chris Zhong
2017-02-05  7:54 ` [PATCH v17 3/7] drm/rockchip: cdn-dp: Do not run worker while suspended Chris Zhong
2017-02-05  7:54   ` Chris Zhong
2017-02-05  7:54   ` Chris Zhong
2017-02-05  7:54 ` [PATCH v17 4/7] drm/rockchip: cdn-dp: do not use drm_helper_hpd_irq_event Chris Zhong
2017-02-05  7:54   ` Chris Zhong
2017-02-05  7:54   ` Chris Zhong
2017-02-05  7:55 ` [PATCH v17 5/7] drm/rockchip: cdn-dp: Move mutex_init to probe Chris Zhong
2017-02-05  7:55   ` Chris Zhong
2017-02-05  7:55   ` Chris Zhong
2017-02-05  7:55 ` [PATCH v17 6/7] drm/rockchip: cdn-dp: retry to check sink count Chris Zhong
2017-02-05  7:55   ` Chris Zhong
2017-02-05  7:55   ` Chris Zhong
2017-02-05  7:55 ` [PATCH v17 7/7] drm/rockchip: cdn-dp: don't configure hardware in mode_set Chris Zhong
2017-02-05  7:55   ` Chris Zhong
2017-02-05  8:42 ` [PATCH v17 0/7] drm/rockchip: Add CDN DP driver Mark yao
2017-02-05  8:42   ` Mark yao
2017-02-05  8:42   ` Mark yao

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