kernel/include/media/v4l2-async.h, branch linux-5.2.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55Z

Based on 2 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 version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

media: v4l2-core: cleanup coding style at V4L2 async/fwnode

2018-10-05T10:49:16Z

There are several coding style issues at those definitions, and the previous patchset added even more. Address the trivial ones by first calling: ./scripts/checkpatch.pl --strict --fix-inline include/media/v4l2-async.h include/media/v4l2-fwnode.h include/media/v4l2-mediabus.h drivers/media/v4l2-core/v4l2-async.c drivers/media/v4l2-core/v4l2-fwnode.c and then manually adjusting the style where needed. Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: v4l2: async: Remove notifier subdevs array

2018-10-04T19:59:21Z

All platform drivers have been converted to use v4l2_async_notifier_add_subdev(), in place of adding asd's to the notifier subdevs array. So the subdevs array can now be removed from struct v4l2_async_notifier, and remove the backward compatibility support for that array in v4l2-async.c. Signed-off-by: Steve Longerbeam Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: v4l2-fwnode: Switch to v4l2_async_notifier_add_subdev

2018-10-04T19:33:09Z

The fwnode endpoint and reference parsing functions in v4l2-fwnode.c are modified to make use of v4l2_async_notifier_add_subdev(). As a result the notifier->subdevs array is no longer allocated or re-allocated, and by extension the max_subdevs value is also no longer needed. Callers of the fwnode endpoint and reference parsing functions must now first initialize the notifier with a call to v4l2_async_notifier_init(). This includes the function v4l2_async_register_subdev_sensor_common(), and the intel-ipu3, omap3isp, and rcar-vin drivers. Since the notifier->subdevs array is no longer allocated in the fwnode endpoint and reference parsing functions, the callers of those functions must never reference that array, since it is now NULL. Of the drivers that make use of the fwnode/ref parsing, only the intel-ipu3 driver references the ->subdevs[] array, (in the notifier completion callback), so that driver has been modified to iterate through the notifier->asd_list instead. Signed-off-by: Steve Longerbeam Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: v4l2: async: Add convenience functions to allocate and add asd's

2018-10-04T19:20:00Z

Add these convenience functions, which allocate an asd of match type fwnode, i2c, or device-name, of size asd_struct_size, and then adds them to the notifier asd_list. Signed-off-by: Steve Longerbeam Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: v4l2: async: Add v4l2_async_notifier_add_subdev

2018-10-04T19:17:33Z

v4l2_async_notifier_add_subdev() adds an asd to the notifier. It checks that no other equivalent asd's have already been added to this notifier's asd list, or to other registered notifier's waiting or done lists, and increments num_subdevs. v4l2_async_notifier_add_subdev() does not make use of the notifier subdevs array, otherwise it would have to re-allocate the array every time the function was called. In place of the subdevs array, the function adds the newly allocated asd to a new master asd_list. The function will return error with a WARN() if it is ever called with the subdevs array allocated. Drivers are now required to call a v4l2_async_notifier_init(), before the first call to v4l2_async_notifier_add_subdev(), in order to initialize the asd_list. In v4l2_async_notifier_has_async_subdev(), __v4l2_async_notifier_register(), and v4l2_async_notifier_cleanup(), maintain backward compatibility with the subdevs array, by alternatively operate on the subdevs array or a non-empty notifier->asd_list. Signed-off-by: Steve Longerbeam Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: fix usage of whitespaces and on indentation

2018-01-04T18:12:01Z

On several places, whitespaces are being used for indentation, or even at the end of the line. Fix them. Signed-off-by: Mauro Carvalho Chehab

media: v4l2-async: better describe match union at async match struct

2017-12-29T12:15:14Z

Now that kernel-doc handles nested unions, better document the match union at struct v4l2_async_subdev. Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: v4l2-async: simplify v4l2_async_subdev structure

2017-12-29T12:14:28Z

The V4L2_ASYNC_MATCH_FWNODE match criteria requires just one struct to be filled (struct fwnode_handle). The V4L2_ASYNC_MATCH_DEVNAME match criteria requires just a device name. So, it doesn't make sense to enclose those into structs, as the criteria can go directly into the union. That makes easier to document it, as we don't need to document weird senseless structs. At drivers, this makes even clearer about the match criteria. Acked-by: Sylwester Nawrocki Acked-by: Benoit Parrot Acked-by: Alexandre Belloni Acked-by: Sakari Ailus Acked-by: Philipp Zabel Acked-by: Hyun Kwon Acked-by: Niklas Söderlund Acked-by: Lad, Prabhakar Signed-off-by: Mauro Carvalho Chehab

media: v4l: fwnode: Add a convenience function for registering sensors

2017-10-31T18:03:15Z

Add a convenience function for parsing firmware for information on related devices using v4l2_async_notifier_parse_fwnode_sensor_common() registering the notifier and finally the async sub-device itself. This should be useful for sensor drivers that do not have device specific requirements related to firmware information parsing or the async framework. Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Reviewed-by: Niklas Söderlund Reviewed-by: Sebastian Reichel Signed-off-by: Mauro Carvalho Chehab