kernel/include/media/v4l2-device.h, branch linux-4.15.y

[media] v4l2-device.h: fix some doc tags

2016-09-09T12:41:12Z

Fix some minor issues at the documentation tags on this file, adding cross-references where needed, and fixing some broken ones. While here, fix a few spaces before tabs to make Checkpatch happier. Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-device.h: document functions

2016-07-23T11:03:24Z

The functions at v4l2-device.h are not using the proper markups. Add it, and include at the v4l2-core.rst. Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-device.h: add v4l2_device_mask_ variants

2016-04-20T19:08:42Z

The v4l2_device_call_* defines filter subdevs based on the grp_id value. But some drivers use a bitmask, so instead of filtering by grp_id == value, you want to filter by grp_id & value. Make variants of these defines to do this. The 'has_op' define has been extended to have a grp_id argument as well, and a mask variant has been added. This extra argument required a change to go7007. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-core: remove the old .ioctl BKL replacement

2015-03-02T20:06:56Z

To keep V4L2 drivers that did not yet convert to unlocked_ioctl happy, the v4l2 core had a .ioctl file operation that took a V4L2 lock. The last drivers are now converted to unlocked_ioctl, so all this old code can now be removed. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-subdev.h: fix sparse error with v4l2_subdev_notify

2014-04-16T21:13:56Z

The notify function is a void function, yet the v4l2_subdev_notify define uses it in a ? : construction, which causes sparse warnings. Replace the define by a static inline function and move it to v4l2-device.h, which is where it belongs since it needs to know the v4l2_device struct. This wasn't a problem when it was a define, but as a static inline function this no longer compiles in v4l2-subdev.h. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-core: add code to check for specific ops

2013-03-24T14:59:02Z

This patch adds a v4l2_subdev_has_op() macro and a v4l2_device_has_op macro to quickly check if a specific subdev or any subdev supports a particular subdev operation. This makes it easy for drivers to disable certain ioctls if none of the subdevs supports the necessary functionality. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-device: fix a macro definition

2011-04-13T12:53:29Z

v4l2_device_unregister_subdev() wrongly uses "arg..." instead of "## arg" in its body. Fix it. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-device: add kref and a release function

2011-03-22T19:38:05Z

The video_device struct has proper ref counting and its release function will be called when the last user releases it. But no such support was available for struct v4l2_device. This made it hard to determine when a USB driver can release the device if it has multiple device nodes. With one device node it is easy of course, since when the device node is released, the whole device can be released. This patch adds refcounting to v4l2_device. When registering device nodes the v4l2_device refcount will be increased, when releasing device nodes it will be decreased. The (optional) release function will be called when the last device node was released. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l2: add v4l2_prio_state to v4l2_device and video_device

2011-03-22T19:37:55Z

Integrate the v4l2_prio_state into the core, ready for use. One struct v4l2_prio_state is added to v4l2_device and a pointer to a prio state is added to video_device. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l: Add a media_device pointer to the v4l2_device structure

2011-03-22T07:53:18Z

The pointer will later be used to register/unregister media entities when registering/unregistering a v4l2_subdev or a video_device. With the introduction of media devices, device drivers need to store a pointer to a driver-specific structure in the device's drvdata. v4l2_device can't claim ownership of the drvdata anymore. To maintain compatibility with drivers that rely on v4l2_device storing a pointer to itself in the device's drvdata, v4l2_device_register() will keep doing so if the drvdata is NULL. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab