kernel/linux.git/include/media/v4l2-subdev.h, branch linux-5.8.y

media: v4l2-subdev: add v4l2_subdev_get_fwnode_pad_1_to_1

2020-05-18T09:12:52+00:00

Add a convenience function that can be used as the .get_fwnode_pad operation for subdevices that map port numbers and pad indexes 1:1. The function verifies the endpoint is owned by the subdevice, and if so returns the endpoint port number. Signed-off-by: Steve Longerbeam Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: v4l2: Switch to new kerneldoc syntax for named variable macro arguments

2020-03-05T21:46:45+00:00

The new syntax is available since commit 43756e347f21 ("scripts/kernel-doc: Add support for named variable macro arguments"). The same HTML output is produced with and without this patch. Signed-off-by: Jonathan Neuschäfer Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: v4l2-subdev: remove wrong @cond from kdocs

2019-12-13T08:14:55+00:00

v4l2_subdev_call() is unconditional, so don't mention in the docs a @cond parameter which does not exist. Signed-off-by: Wolfram Sang Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: v4l2-subdev: Verify arguments in v4l2_subdev_call()

2019-06-24T18:53:44+00:00

Correctness of format type (try or active) and pad number parameters passed to subdevice operation callbacks is now verified only for IOCTL calls. However, those callbacks are also used by drivers, e.g., V4L2 host interfaces. Since both subdev_do_ioctl() and drivers are using v4l2_subdev_call() macro while calling subdevice operations, move those parameter checks from subdev_do_ioctl() to v4l2_subdev_call() so we can avoid taking care of those checks inside drivers. Define a wrapper function for each operation callback in scope, then gather those wrappers in a static v4l2_subdev_ops structure so the v4l2_subdev_call() macro can find them easy if provided. Signed-off-by: Janusz Krzysztofik Reviewed-by: Sakari Ailus Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30T18:26:37+00:00

Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman

media: v4l2-subdev: handle module refcounting here

2019-03-19T17:29:37+00:00

The module ownership refcounting was done in media_entity_get/put, but that was very confusing and it did not work either in case an application had a v4l-subdevX device open and the module was unbound. When the v4l-subdevX device was closed the media_entity_put was never called and the module refcount was left one too high, making it impossible to unload it. Since v4l2-subdev.c was the only place where media_entity_get/put was called, just move the functionality to v4l2-subdev.c and drop those confusing entity functions. Store the module in subdev_fh so module_put no longer depends on the media_entity struct. Signed-off-by: Hans Verkuil Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: v4l2-subdev: add release() internal op

2019-03-19T17:24:28+00:00

If the subdevice created a device node, then the v4l2_subdev cannot be freed until the last user of the device node closes it. This means that we need a release() callback in v4l2_subdev_internal_ops that is called from the video_device release function so the subdevice driver can postpone freeing memory until the that callback is called. If no video device node was created then the release callback can be called immediately when the subdev is unregistered. Signed-off-by: Hans Verkuil Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: include: fix several typos

2019-03-01T14:45:52+00:00

Use codespell to fix lots of typos over frontends. Manually verified to avoid false-positives. Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Lad, Prabhakar Signed-off-by: Mauro Carvalho Chehab

media: v4l2-subdev.h: v4l2_subdev_call: use temp __sd variable

2019-02-18T15:58:59+00:00

The sd argument of this macro can be a more complex expression. Since it is used 5 times in the macro it can be evaluated that many times as well. So assign it to a temp variable in the beginning and use that instead. This also avoids any potential side-effects of evaluating sd. Signed-off-by: Hans Verkuil Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: v4l2-subdev: document controls need _FL_HAS_DEVNODE

2018-12-07T13:31:18+00:00

Control events can be subscribed and received by the user. Therefore drivers that support controls must expose the V4L2_SUBDEV_FL_HAS_EVENTS flag. [As discussed in https://lkml.org/lkml/2018/11/27/637] Reported-by: Sakari Ailus Signed-off-by: Luca Ceresoli Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab