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| author |   Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-09-29 12:23:56 +0200 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2017-10-24 17:14:25 +0200 |
| commit | 6771fce5060e10f6c878b5d644e9d66dd7f68950 (patch) | |
| tree | 0722c903e18be3fb31037ed76d03cc434a8e46ce /drivers/media/platform | |
| parent | media: smiapp: Use __v4l2_ctrl_handler_setup() (diff) | |
| download | linux-dev-6771fce5060e10f6c878b5d644e9d66dd7f68950.tar.xz linux-dev-6771fce5060e10f6c878b5d644e9d66dd7f68950.zip | |
media: smiapp: Rely on runtime PM
Instead of relying on a mix of runtime PM and the s_power() callback, drop
the s_power() callback altogether and use runtime PM solely.
As device access is required during device power-on and power-off
sequences, runtime PM alone cannot tell whether the device is available.
Thus the "active" field is introduced in struct smiapp_sensor to tell
whether it is safe to write to the device.
Consequently there is no need to power on the device whenever a file
handle is open. This functionality is removed as well. The user may still
control the device power management through sysfs. Autosuspend remains
enabled, with 1 s delay.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/platform')
0 files changed, 0 insertions, 0 deletions