[PATCH v2 3/8] drm/tegra: Call drm_atomic_helper_shutdown() at shutdown time

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Based on grepping through the source code this driver appears to be
missing a call to drm_atomic_helper_shutdown() at system shutdown
time. Among other things, this means that if a panel is in use that it
won't be cleanly powered off at system shutdown time.

The fact that we should call drm_atomic_helper_shutdown() in the case
of OS shutdown/restart comes straight out of the kernel doc "driver
instance overview" in drm_drv.c.

Suggested-by: Maxime Ripard <mripard@xxxxxxxxxx>
Reviewed-by: Maxime Ripard <mripard@xxxxxxxxxx>
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---
This commit is only compile-time tested.

(no changes since v1)

 drivers/gpu/drm/tegra/drm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 03d1c76aec2d..d9f0728c3afd 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1330,6 +1330,11 @@ static int host1x_drm_remove(struct host1x_device *dev)
 	return 0;
 }
 
+static void host1x_drm_shutdown(struct host1x_device *dev)
+{
+	drm_atomic_helper_shutdown(dev_get_drvdata(&dev->dev));
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int host1x_drm_suspend(struct device *dev)
 {
@@ -1398,6 +1403,7 @@ static struct host1x_driver host1x_drm_driver = {
 	},
 	.probe = host1x_drm_probe,
 	.remove = host1x_drm_remove,
+	.shutdown = host1x_drm_shutdown,
 	.subdevs = host1x_drm_subdevs,
 };
 
-- 
2.45.2.505.gda0bf45e8d-goog




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux