diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2016-09-14 12:29:23 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-10-21 15:42:43 -0200 |
| commit | 93bef23024983d707248c25a849f5860119cd5e4 (patch) | |
| tree | a3e6e4610bf83aa8aa11341d1a4099b997a608b9 /drivers/media/i2c | |
| parent | cbba45d43631d0414266d7e79827da3f491f1b1e (diff) | |
[media] smiapp: Implement support for autosuspend
Delay suspending the device by 1000 ms by default. This is done on
explicit power off through s_power() callback, through releasing the
file descriptor, NVM read or when the probe finishes.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/smiapp/smiapp-core.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index 68adc1b28985..59872b31f832 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -1380,17 +1380,22 @@ static int smiapp_power_off(struct device *dev) static int smiapp_set_power(struct v4l2_subdev *subdev, int on) { - int rval = 0; + int rval; - if (on) { - rval = pm_runtime_get_sync(subdev->dev); - if (rval >= 0) - return 0; + if (!on) { + pm_runtime_mark_last_busy(subdev->dev); + pm_runtime_put_autosuspend(subdev->dev); - if (rval != -EBUSY && rval != -EAGAIN) - pm_runtime_set_active(subdev->dev); + return 0; } + rval = pm_runtime_get_sync(subdev->dev); + if (rval >= 0) + return 0; + + if (rval != -EBUSY && rval != -EAGAIN) + pm_runtime_set_active(subdev->dev); + pm_runtime_put(subdev->dev); return rval; @@ -2340,7 +2345,8 @@ smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr, return -ENODEV; } - pm_runtime_put(&client->dev); + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); } /* * NVM is still way below a PAGE_SIZE, so we can safely @@ -2681,7 +2687,8 @@ static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) static int smiapp_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { - pm_runtime_put(sd->dev); + pm_runtime_mark_last_busy(sd->dev); + pm_runtime_put_autosuspend(sd->dev); return 0; } @@ -3093,7 +3100,9 @@ static int smiapp_probe(struct i2c_client *client, if (rval < 0) goto out_media_entity_cleanup; - pm_runtime_put(&client->dev); + pm_runtime_set_autosuspend_delay(&client->dev, 1000); + pm_runtime_use_autosuspend(&client->dev); + pm_runtime_put_autosuspend(&client->dev); return 0; |