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path: root/include/media/v4l2-subdev.h
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2014-03-13[media] v4l: add enum_freq_bands support to tuner sub-deviceAntti Palosaari1-0/+1
Add VIDIOC_ENUM_FREQ_BANDS, enumerate supported frequency bands, IOCTL support for sub-device tuners too. Cc: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-11[media] v4l2: add VIDIOC_G/S_EDID support to the v4l2 coreHans Verkuil1-2/+2
Support this ioctl as part of the v4l2 core. Use the new ioctl name and struct v4l2_edid type in the existing core code. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-02-24[media] v4l2-subdev: Allow 32-bit compat ioctlsHans Verkuil1-0/+4
Add support for 32-bit ioctls with v4l-subdev device nodes. Rather than keep adding new ioctls to the list in v4l2-compat-ioctl32.c, just check if the ioctl is a non-private V4L2 ioctl and if so, call the conversion code. We keep forgetting to add new ioctls, so this is a more robust solution. In addition extend the subdev API with support for a compat32 function to convert custom v4l-subdev ioctls. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-10-31[media] v4l: Fix typo in v4l2_subdev_get_try_crop()Laurent Pinchart1-1/+1
The helper function is defined by a macro that is erroneously called with the compose rectangle instead of the crop rectangle. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-10-31[media] V4L2: add a common V4L2 subdevice platform data typeGuennadi Liakhovetski1-0/+13
This struct shall be used by subdevice drivers to pass per-subdevice data, e.g. power supplies, to generic V4L2 methods, at the same time allowing optional host-specific extensions via the host_priv pointer. To avoid having to pass two pointers to those methods, add a pointer to this new struct to struct v4l2_subdev. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-10-31[media] V4L2: (cosmetic) remove redundant use of unlikely()Guennadi Liakhovetski1-2/+2
BUG*() and WARN*() macros specify their conditions as unlikely, using BUG_ON(unlikely(condition)) is redundant, remove it. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-07-30[media] V4L: Merge struct v4l2_async_subdev_list with struct v4l2_subdevSylwester Nawrocki1-7/+6
By integrating the v4l2-async API internals a bit more with the core overall the v4l2-async code becomes a bit simpler and easier to follow. Acked-and-tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-06-21[media] V4L2: support asynchronous subdevice registrationGuennadi Liakhovetski1-0/+8
Currently bridge device drivers register devices for all subdevices synchronously, typically, during their probing. E.g. if an I2C CMOS sensor is attached to a video bridge device, the bridge driver will create an I2C device and wait for the respective I2C driver to probe. This makes linking of devices straight forward, but this approach cannot be used with intrinsically asynchronous and unordered device registration systems like the Flattened Device Tree. To support such systems this patch adds an asynchronous subdevice registration framework to V4L2. To use it respective (e.g. I2C) subdevice drivers must register themselves with the framework. A bridge driver on the other hand must register notification callbacks, that will be called upon various related events. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-06-21[media] V4L2: add a device pointer to struct v4l2_subdevGuennadi Liakhovetski1-0/+2
It is often useful to have simple means to get from a subdevice to the underlying physical device. This patch adds such a pointer to struct v4l2_subdev and sets it accordingly in the I2C and SPI cases. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-06-21[media] v4l2-core: remove support for obsolete VIDIOC_DBG_G_CHIP_IDENTHans Verkuil1-3/+1
This has been replaced by the new and much better VIDIOC_DBG_G_CHIP_INFO. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] v4l2-subdev: remove obsolete dv_preset opsHans Verkuil1-16/+0
These ops are no longer used, so it's time to remove them. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] v4l2-core: add code to check for specific opsHans Verkuil1-0/+3
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 <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] v4l2: add const to argument of write-only s_register ioctlHans Verkuil1-1/+1
This ioctl is defined as IOW, so pass the argument as const. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] v4l2: add const to argument of write-only s_tuner ioctlHans Verkuil1-1/+1
This ioctl is defined as IOW, so pass the argument as const. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Alexey Klimov <klimov.linux@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-24[media] v4l2: add const to argument of write-only s_frequency ioctlHans Verkuil1-1/+1
This ioctl is defined as IOW, so pass the argument as const. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] V4L: Add [get/set]_frame_desc subdev callbacksSylwester Nawrocki1-0/+42
Add subdev callbacks for setting up parameters of the frame on media bus that are not exposed to user space directly. This is just an initial, mostly stub implementation. struct v4l2_mbus_frame_desc is intended to be extended with sub-structures specific to a particular hardware media bus. For now these new callbacks are used only to query or specify maximum size of a compressed or hybrid (container) media bus frame in octets. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] V4L: Add s_rx_buffer subdev video operationSylwester Nawrocki1-0/+6
The s_rx_buffer callback allows the host to set buffer for a data being received by the subdev, e.g. non-image frame (meta) data. This callback can be implemented by subdevice like a MIPI CSI2 receiver, allowing the host driver to gather additional data into frame buffer passed to user space. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] v4l2: make vidioc_s_crop constHans Verkuil1-1/+1
Write-only ioctls should have a const argument in the ioctl op. Do this conversion for vidioc_s_crop. Adding const for write-only ioctls was decided during the 2012 Media Workshop. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] v4l2: make vidioc_s_modulator constHans Verkuil1-1/+1
Write-only ioctls should have a const argument in the ioctl op. Do this conversion for vidioc_s_modulator. Adding const for write-only ioctls was decided during the 2012 Media Workshop. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-13[media] v4l2-subdev: add support for the new edid ioctlsHans Verkuil1-0/+2
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-08-11[media] v4l2: typosMichael Jones1-1/+1
[mchehab@redhat.com: fix a merge conflict at Documentation/video4linux/v4l2-framework.txt] Signed-off-by: Michael Jones <michael.jones@matrix-vision.de> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-20[media] v4l2 framework: add support for the new dv_timings ioctlsHans Verkuil1-0/+6
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-14[media] v4l: Implement v4l2_subdev_link_validate()Sakari Ailus1-0/+12
v4l2_subdev_link_validate() is the default op for validating a link. In V4L2 subdev context, it is used to call a pad op which performs the proper link check without much extra work. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-10[media] v4l: Check pad number in get try pointer functionsSakari Ailus1-17/+13
Unify functions to get try pointers and validate the pad number accessed by the user. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-10[media] v4l: vdev_to_v4l2_subdev() should have return type "struct ↵Sakari Ailus1-1/+1
v4l2_subdev *" vdev_to_v4l2_subdev() should return struct v4l2_subdev *, not void *. Fix this. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-10[media] v4l: VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION IOCTLsSakari Ailus1-4/+17
Add support for VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION IOCTLs. They replace functionality provided by VIDIOC_SUBDEV_S_CROP and VIDIOC_SUBDEV_G_CROP IOCTLs and also add new functionality (composing). VIDIOC_SUBDEV_G_CROP and VIDIOC_SUBDEV_S_CROP continue to be supported. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-03[media] V4L: add .g_std() core V4L2 subdevice operationGuennadi Liakhovetski1-0/+1
VIDIOC_G_STD can return the current TV-norm to the user in one of two ways: if an .vidioc_g_std() ioctl operation is provided by the driver, it is called, otherwise the value ot the .current_norm field of struct video_device is returned. Since subdevice drivers currently have no access to struct video_device objects, the only way to provide this information to the user is by implementing a .g_std() method. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-03[media] V4L: dynamically allocate video_device nodes in subdevicesGuennadi Liakhovetski1-2/+2
Currently only very few drivers actually use video_device nodes, embedded in struct v4l2_subdev. Allocate these nodes dynamically for those drivers to save memory for the rest. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] V4L: add media bus configuration subdev operationsGuennadi Liakhovetski1-0/+10
Add media bus configuration types and two subdev operations to get supported mediabus configurations and to set a specific configuration. Subdevs can support several configurations, e.g., they can send video data on 1 or several lanes, can be configured to use a specific CSI-2 channel, in such cases subdevice drivers return bitmasks with all respective bits set. When a set-configuration operation is called, it has to specify a non-ambiguous configuration. Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l: add g_std_output callback to V4L2 subdevTomasz Stanislawski1-0/+4
Callback is used to acquire current analog TV standard from a subdev. It is used to avoid keeping current standard in top-level driver. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l: add g_dv_preset callback to V4L2 subdevTomasz Stanislawski1-0/+4
Callback is used to acquire current digital video preset from a subdev. It is used to avoid keeping dv preset in top-level driver. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l: add g_tvnorms_output callback to V4L2 subdevTomasz Stanislawski1-0/+4
Callback is used to acquire TV norms supported by a subdev. It is used to avoid having standards in top-level driver. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l2-event/ctrls/fh: allocate events per fh and per type instead of ↵Hans Verkuil1-2/+0
just per-fh The driver had to decide how many events to allocate when the v4l2_fh struct was created. It was possible to add more events afterwards, but there was no way to ensure that you wouldn't miss important events if the event queue would fill up for that filehandle. In addition, once there were no more free events, any new events were simply dropped on the floor. For the control event in particular this made life very difficult since control status/value changes could just be missed if the number of allocated events and the speed at which the application read events was too low to keep up with the number of generated events. The application would have no idea what the latest state was for a control since it could have missed the latest control change. So this patch makes some major changes in how events are allocated. Instead of allocating events per-filehandle they are now allocated when subscribing an event. So for that particular event type N events (determined by the driver) are allocated. Those events are reserved for that particular event type. This ensures that you will not miss events for a particular type altogether. In addition, if there are N events in use and a new event is raised, then the oldest event is dropped and the new one is added. So the latest event is always available. This can be further improved by adding the ability to merge the state of two events together, ensuring that no data is lost at all. This will be added in the next patch. This also makes it possible to allow the user to determine the number of events that will be allocated. This is not implemented at the moment, but would be trivial. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-07[media] tuner-core/v4l2-subdev: document that the type field has to be filled inHans Verkuil1-0/+7
The tuner ops g_frequency, g_tuner and s_tuner require that the tuner type field is filled in. Document this. The tuner-core doc is based on a patch from Mauro Carvalho Chehab <mchehab@redhat.com>. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-07[media] v4l2-subdev.h: remove unused s_mode tuner opHans Verkuil1-4/+1
s_mode is no longer used, so remove it. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: Add subdev sensor g_skip_frames operationLaurent Pinchart1-0/+4
Some buggy sensors generate corrupt frames when the stream is started. This new operation return the number of corrupt frames to skip when starting the stream. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: v4l2_subdev userspace crop APIAntti Koskipaa1-0/+4
This patch adds the VIDIOC_SUBDEV_S_CROP and G_CROP ioctls to the userland API. CROPCAP is not implemented because it's redundant. Signed-off-by: Antti Koskipaa <akoskipa@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: v4l2_subdev userspace frame interval APILaurent Pinchart1-0/+7
The three new ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, VIDIOC_SUBDEV_G_FRAME_INTERVAL and VIDIOC_SUBDEV_S_FRAME_INTERVAL can be used to enumerate and configure a subdev's frame rate from userspace. Two new video::g/s_frame_interval subdev operations are introduced to support those ioctls. The existing video::g/s_parm operations are deprecated and shouldn't be used anymore. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: v4l2_subdev userspace format APILaurent Pinchart1-0/+10
Add a userspace API to get, set and enumerate the media format on a subdev pad. The format at the output of a subdev usually depends on the format at its input(s). The try format operation is thus not suitable for probing format at individual pads, as it can't modify the device state and thus can't remember the format tried at the input to compute the output format. To fix the problem, pass an extra argument to the get/set format operations to select the 'try' or 'active' format. The try format is used when probing the subdev. Setting the try format must not change the device configuration but can store data for later reuse. Data storage is provided at the file-handle level so applications probing the subdev concurently won't interfere with each other. The active format is used when configuring the subdev. It's identical to the format handled by the usual get/set operations. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: v4l2_subdev pad-level operationsLaurent Pinchart1-0/+4
Add a v4l2_subdev_pad_ops structure for the operations that need to be performed at the pad level such as format-related operations. Pad format-related operations use v4l2_mbus_framefmt instead of v4l2_format. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: subdev: Add new file operationsLaurent Pinchart1-0/+7
V4L2 sub-devices store pad formats and crop settings in the file handle. To let drivers initialize those settings properly, add an open operation that is called when the subdev is opened as well as a corresponding close operation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: Create v4l2 subdev file handle structureStanimir Varbanov1-0/+29
Used for storing subdev information per file handle and hold V4L2 file handle. Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Antti Koskipaa <akoskipa@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] v4l: Make v4l2_subdev inherit from media_entityLaurent Pinchart1-0/+6
V4L2 subdevices are media entities. As such they need to inherit from (include) the media_entity structure. When registering/unregistering the subdevice, the media entity is automatically registered/unregistered. The entity is acquired on device open and released on device close. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-21[media] v4l: subdev: Events supportSakari Ailus1-0/+10
Provide v4l2_subdevs with v4l2_event support. Subdev drivers only need very little to support events. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: David Cohen <dacohen@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-21[media] v4l: subdev: Uninline the v4l2_subdev_init functionLaurent Pinchart1-13/+2
The function isn't small or performance sensitive enough to be inlined. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-21[media] v4l: subdev: Add device node supportLaurent Pinchart1-2/+12
Create a device node named subdevX for every registered subdev. As the device node is registered before the subdev core::s_config function is called, return -EGAIN on open until initialization completes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vimarsh Zutshi <vimarsh.zutshi@gmail.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-21[media] v4l: subdev: Don't require core operationsLaurent Pinchart1-2/+1
There's no reason to require subdevices to implement the core operations. Remove the check for non-NULL core operations when initializing the subdev. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-21[media] V4L: add enum_mbus_fsizes video operationQing Xu1-0/+2
Add enum_mbus_fsizes V4L2 subdevice video operation. Signed-off-by: Qing Xu <qingx@marvell.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-01-19[media] v4l2-subdev: add (un)register internal opsHans Verkuil1-0/+17
Some subdevs need to call into the board code after they are registered and have a valid struct v4l2_device pointer. The s_config op was abused for this, but now that it is removed we need a cleaner way of solving this. So this patch adds a struct with internal ops that the v4l2 core can call. Currently only two ops exist: register and unregister. Subdevs can implement these to call the board code and pass it the v4l2_device pointer, which the board code can then use to get access to the struct that embeds the v4l2_device. It is expected that in the future open and close ops will also be added. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-01-19[media] v4l2-subdev: remove core.s_config and v4l2_i2c_new_subdev_cfg()Hans Verkuil1-5/+1
The core.s_config op was meant for legacy drivers that needed to work with old pre-2.6.26 kernels. This is no longer relevant. Unfortunately, this op was incorrectly called from several drivers. Replace those occurences with proper i2c_board_info structs and call v4l2_i2c_new_subdev_board. After these changes v4l2_i2c_new_subdev_cfg() was no longer used, so remove that function as well. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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