kernel/include/media/media-device.h, branch linux-6.18.y

media: mc: Add nop implementations of media_device_{init,cleanup}

2024-04-10T13:15:30Z

To support compilation with Media controller disabled, drivers were required to conditionally call media_device_init and media_device_cleanup. Add nop implementations of both so drivers don't need to care (or at least care less). Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Signed-off-by: Hans Verkuil

media: mc-device: remove unnecessary __must_check

2023-04-11T16:54:01Z

In the file mc-device.c, the function media_device_register_entity_notify() does not need to have the __must_check attribute since it returns only a value of 0. Therefore, we can remove this attribute and change the function's return type. Signed-off-by: Jason Kim Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: mc: entity: Merge media_entity_enum_init and __media_entity_enum_init

2022-09-24T07:10:38Z

The media_entity_enum_init() function is a wrapper around __media_entity_enum_init() that turns a media_device pointer argument into the maximum entity ID in the corresponding media graph. __media_entity_enum_init() is never used outside of media_entity_enum_init(), so the two functions can be merged together. Signed-off-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: mc: Set bus_info in media_device_init()

2022-04-24T07:05:53Z

Set bus_info field based on struct device in media_device_init() and remove corresponding code from drivers. Also update media_device_init() documentation: the dev field must be now initialised before calling it. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: mc: Provide a helper for setting bus_info field

2022-04-24T07:04:27Z

The bus_info or a similar field exists in a lot of structs, yet drivers tend to set the value of that field by themselves in a determinable way. Thus provide a helper for doing this. To be used in subsequent patches. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: mc: media_device_init() initialises a media_device, not media_entity

2022-04-24T07:02:06Z

The documentation for media_device_init() had several references to (struct) media_entity where it should have referred to struct media_device instead. Fix this. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: mc: Remove redundant documentation

2022-04-24T07:01:38Z

Remove redundant kerneldoc documentation in mc-device.c. The functions are already documented in media-device.h, where non-redundant documentation is also moved. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: media-device.h: drop duplicated word in comment

2020-07-19T12:00:07Z

Delete the doubled word "the" in a comment. Signed-off-by: Randy Dunlap Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174

2019-05-30T18:26:41Z

Based on 1 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 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-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Kate Stewart Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman

media: media-request: implement media requests

2018-08-31T15:04:51Z

Add initial media request support: 1) Add MEDIA_IOC_REQUEST_ALLOC ioctl support to media-device.c 2) Add struct media_request to store request objects. 3) Add struct media_request_object to represent a request object. 4) Add MEDIA_REQUEST_IOC_QUEUE/REINIT ioctl support. Basic lifecycle: the application allocates a request, adds objects to it, queues the request, polls until it is completed and can then read the final values of the objects at the time of completion. When it closes the file descriptor the request memory will be freed (actually, when the last user of that request releases the request). Drivers will bind an object to a request (the 'adds objects to it' phase), when MEDIA_REQUEST_IOC_QUEUE is called the request is validated (req_validate op), then queued (the req_queue op). When done with an object it can either be unbound from the request (e.g. when the driver has finished with a vb2 buffer) or marked as completed (e.g. for controls associated with a buffer). When all objects in the request are completed (or unbound), then the request fd will signal an exception (poll). Co-developed-by: Sakari Ailus Co-developed-by: Laurent Pinchart Co-developed-by: Alexandre Courbot Signed-off-by: Hans Verkuil Signed-off-by: Sakari Ailus Reviewed-by: Mauro Carvalho Chehab Signed-off-by: Mauro Carvalho Chehab