[PATCH 2/6] [media] v4l2-core: Implement dev_pm_ops.prepare()
Have it return 1 so that video devices that are runtime-suspended won't
be suspended when the system goes to a sleep state. This can make resume
times considerably shorter because these devices don't need to be
resumed when the system is awaken.
Signed-off-by: Tomeu Vizoso
---
drivers/media/v4l2-core/v4l2-dev.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-dev.c
b/drivers/media/v4l2-core/v4l2-dev.c
index e2b8b3e..b74e3d3 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -219,9 +219,19 @@ static void v4l2_device_release(struct device *cd)
v4l2_device_put(v4l2_dev);
}
+static int video_device_prepare(struct device *dev)
+{
+ return 1;
+}
+
+static const struct dev_pm_ops video_device_pm_ops = {
+ .prepare = video_device_prepare,
+};
+
static struct class video_class = {
.name = VIDEO_NAME,
.dev_groups = video_device_groups,
+ .pm = _device_pm_ops,
};
struct video_device *video_devdata(struct file *file)
--
2.3.4
--
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[PATCH 2/6] [media] v4l2-core: Implement dev_pm_ops.prepare()
Have it return 1 so that video devices that are runtime-suspended won't
be suspended when the system goes to a sleep state. This can make resume
times considerably shorter because these devices don't need to be
resumed when the system is awaken.
Signed-off-by: Tomeu Vizoso tomeu.viz...@collabora.com
---
drivers/media/v4l2-core/v4l2-dev.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-dev.c
b/drivers/media/v4l2-core/v4l2-dev.c
index e2b8b3e..b74e3d3 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -219,9 +219,19 @@ static void v4l2_device_release(struct device *cd)
v4l2_device_put(v4l2_dev);
}
+static int video_device_prepare(struct device *dev)
+{
+ return 1;
+}
+
+static const struct dev_pm_ops video_device_pm_ops = {
+ .prepare = video_device_prepare,
+};
+
static struct class video_class = {
.name = VIDEO_NAME,
.dev_groups = video_device_groups,
+ .pm = video_device_pm_ops,
};
struct video_device *video_devdata(struct file *file)
--
2.3.4
--
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