aboutsummaryrefslogtreecommitdiff
path: root/include/media/v4l2-dev.h
AgeCommit message (Collapse)Author
2008-10-12V4L/DVB (9133): v4l: disconnect kernel number from minorHans Verkuil
The v4l core creates four different video devices (video, vbi, radio, vtx) and each has its own range of minor numbers. However, modern devices keep increasing the number of devices that they need so a maximum of 64 video devices will not be enough in the future. In addition this scheme makes it very hard to add new device types. This patch disconnects the kernel number allocation (e.g. video0, video1, etc.) from the actual minor number (just pick the first free minor). This allows for much more flexibility in the future. However, it does require the use of udev. For those who cannot use udev a new CONFIG option was created that changes the allocation scheme back to the old behavior. Thanks to Greg KH for suggesting this approach during the 2008 LPC. In addition, several bugs were fixed in the ivtv and cx18 drivers: these drivers try to allocate specific kernel numbers but that scheme contained a bug which caused what should have been e.g. video17 to appear as e.g. video2. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8852): v4l2: use register_chrdev_region instead of register_chrdevHans Verkuil
Replace the old register_chrdev with the more flexible register_chrdev_region. Ensure that the release() is called when the very last chardev usage was released, and not when the sysfs devices were removed. This should simplify hotpluggable drivers considerably. Tested-by: Mike Isely <isely@isely.net> Tested-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: David Ellingsworth <david@identd.dyndns.org> Reviewed-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8787): v4l2-dev: cleanups and add video_drvdata helper functionHans Verkuil
Cleanup v4l2-dev.[ch], add/improve comments and add a new helper function: video_drvdata() that can get the private driver data from a file struct. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8786): v4l2: remove the priv field, use dev_get_drvdata insteadHans Verkuil
Remove the priv field and let video_get/set_drvdata use dev_get_drvdata and dev_set_drvdata instead. Convert all drivers that still used priv directly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8785): v4l2: add __must_check to v4l2_dev.hHans Verkuil
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8782): v4l2-dev: add video_device_release_emptyHans Verkuil
Add a second release function: video_device_release_empty It can be used by drivers that have statically allocated video_device structs. Its use usually, but not always, indicates laziness on the part of the driver programmer. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8781): v4l2-dev: remove obsolete video_exclusive_open/releaseHans Verkuil
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-07-27V4L/DVB (8525): fix a few assorted spelling mistakes.Hans Verkuil
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-27V4L/DVB (8523): v4l2-dev: remove unused type and type2 field from video_deviceHans Verkuil
The type and type2 fields were unused and so could be removed. Instead add a vfl_type field that contains the type of the video device. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-26V4L/DVB (8488): videodev: remove some CONFIG_VIDEO_V4L1_COMPAT code from ↵Hans Verkuil
v4l2-dev.h The video_device_create_file and video_device_remove_file functions can be removed from v4l2-dev.h, removing the dependency on videodev.h in v4l2-dev.h. Also removed a few more videodev.h includes that should have been videodev2.h. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-26V4L/DVB (8483): Remove obsolete owner field from video_device struct.Hans Verkuil
According to an old comment this should have been removed in 2.6.15. Better late than never... Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-26V4L/DVB (8482): videodev: move all ioctl callbacks to a new v4l2_ioctl_ops ↵Hans Verkuil
struct All ioctl callbacks are now stored in a new v4l2_ioctl_ops struct. Drivers fill in a const struct v4l2_ioctl_ops and video_device just contains a const pointer to it. This ensures a clean separation between the const ops struct and the non-const video_device struct. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-23V4L/DVB (8430): videodev: move some functions from v4l2-dev.h to ↵Hans Verkuil
v4l2-common.h or v4l2-ioctl.h The functions in a header should not belong to another module. The prio functions belong to v4l2-common.c, so move them to v4l2-common.h. The ioctl functions belong to v4l2-ioctl.c, so create a new v4l2-ioctl.h header and move those functions to it. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-23V4L/DVB (8429): videodev: renamed 'class_dev' to 'dev'Hans Verkuil
The class_dev field is a normal device, not a class device. This is very confusing and now that the old 'dev' field has been renamed to 'parent' we can rename 'class_dev' to just 'dev'. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-23V4L/DVB (8428): videodev: rename 'dev' to 'parent'Hans Verkuil
The field 'dev' is not the video device, but the parent of the video device. Rename accordingly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8387): Some cosmetic changesHans Verkuil
Those changes, together with some proper patches, will allow out-of-tree compilation for for kernels < 2.6.19 Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8103): videodev: fix/improve ioctl debuggingHans Verkuil
Various ioctl debugging fixes and improvements: - use %x rather than %d for control IDs and bitmask fields - make two arrays const - show the whole control array for the ext_ctrl ioctls - print pix_fmt for V4L2_BUF_TYPE_VIDEO_OUTPUT - show full type name rather than an integer - fix CROPCAP debugging - fix G/S_TUNER debugging - show error code in case of an error - other small cleanups Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8078): Introduce "index" attribute for persistent video4linux ↵brandon@ifup.org
device nodes A number of V4L drivers have a mod param to specify their preferred minors. This is because it is often desirable for applications to have a static /dev name for a particular device. However, using minors has several disadvantages: 1) the requested minor may already be taken 2) using a mod param is driver specific 3) it requires every driver to add a param 4) requires configuration by hand This patch introduces an "index" attribute that when combined with udev rules can create static device paths like this: /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video0 /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video1 /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video2 $ ls -la /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video0 lrwxrwxrwx 1 root root 12 2008-04-28 00:02 /dev/v4l/by-path/pci-0000:00:1d.2-usb-0:1:1.0-video0 -> ../../video1 These paths are steady across reboots and should be resistant to rearranging across Kernel versions. video_register_device_index is available to drivers to request a specific index number. Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Kees Cook <kees@outflux.net> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (7949): videodev: renamed the vidioc_*_fmt_* callbacksHans Verkuil
The naming for the callbacks that handle the VIDIOC_ENUM_FMT and VIDIOC_S/G/TRY_FMT ioctls was very confusing. Renamed it to match the v4l2_buf_type name. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (7948): videodev: add missing vidioc_try_fmt_sliced_vbi_output and ↵Hans Verkuil
VIDIOC_ENUMOUTPUT handling There was no vidioc_try_fmt_sliced_vbi_output, instead vidioc_try_fmt_vbi_output was reused. The VIDIOC_ENUMOUTPUT handling was missing altogether, even though the callback existed. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (7947): videodev: add vidioc_g_std callback.Hans Verkuil
The default videodev behavior for VIDIOC_G_STD is not correct for all devices. Add a new callback that drivers can use instead. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (7942): Hardware frequency seek ioctl interfaceTobias Lorenz
Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8092): videodev: simplify and fix standard enumerationHans Verkuil
VIDIOC_ENUMSTD did not return all the PAL/SECAM/NTSC variants: it just returned one single PAL/SECAM/NTSC standard without separate entries for the trickier standards like NTSC-JP. Changed the code so that it behaves better. Also simplified the if/switch statements into a common standards lookup table. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-05V4L/DVB (7911): Remove v4l2_video_std_fps prototype declarationGuennadi Liakhovetski
The v4l2_video_std_fps function has been removed by Adrian Bunk in 2004 but then its prototype re-appeared in include/media/v4l2-dev.h. Remove it. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7665): videodev: Add default vidioc handlerDouglas Schilling Landgraf
Added default vidioc handler for other private ioctls Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7133): Fix Kconfig dependenciesMauro Carvalho Chehab
As pointed by Adrian Bunk, with I2C=m and VIDEO_DEV=y, videodev brokes. This patch moves the functions that videodev needs from v4l2-common. It also fixes some Kconfig changes. After this patch, I2C=m / VIDEO_DEV=y will make v4l2 core statically linked into kernel. v4l2-common will be m, and all V4L drivers will also be m. This approach is very conservative, since it is possible to have V4L drivers that don't need I2C or v4l2-common. The better is to map what drivers really need v4l2-common, making them to select v4l2-common, and allowing the others to be 'y', 'm' and 'n'. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-22V4L/DVB (6321): Remove obsolete VIDIOC_S/G_MPEGCOMP ioctlsHans Verkuil
Remove the obsolete VIDIOC_G_MPEGCOMP and VIDIOC_S_MPEGCOMP ioctls from the V4L2 API as per the removal schedule (October 2007). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-22V4L/DVB (6320): v4l core: remove the unused .hardware V4L1 fieldMauro Carvalho Chehab
struct video_device used to define a .hardware field. While initialized on severl drivers, this field is never used inside V4L. However, drivers using it need to include the old V4L1 header. This seems to cause compilation troubles with some random configs. Better just to remove it from all drivers. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6293): V4L: convert struct class_device to struct deviceKay Sievers
The currently used "struct class_device" will be removed from the kernel. Here is a patch that converts all users in drivers/media/video/ to struct device. Reviewed-by: Thierry Merle <thierry.merle@free.fr> Reviewed-by: Mike Isely <isely@pobox.com> Reviewed-by: Luca Risolia <luca.risolia@studio.unibo.it> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09V4L/DVB (5913): Clean up duplicate includes in include/media/Jesper Juhl
This patch cleans up duplicate includes in include/media/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-09-14V4L/DVB (6220a): fix build error for et61x251 driverLinus Torvalds
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27V4L/DVB (5306): Add support for VIDIOC_G_CHIP_IDENTHans Verkuil
VIDIOC_G_CHIP_IDENT improves debugging of card problems: it can be used to detect which chips are on the board and based on that information selected register dumps can be made, making it easy to debug complicated media chips containing tens or hundreds of registers. This ioctl replaces the internal VIDIOC_INT_G_CHIP_IDENT ioctl. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27V4L/DVB (5289): Add support for video output overlays.Hans Verkuil
Add V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY support. Also add support for local and global alpha overlays. Add new field enums V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT. These changes are needed to support the ivtv On Screen Display features. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-03-01V4L/DVB (5271): Add VIDIOC_TRY_ENCODER_CMD and VIDIOC_ENCODER_CMD ioctls.Hans Verkuil
Add support for starting, stopping, pausing and resuming an MPEG (or similar compressed stream) encoder. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-03-01V4L/DVB (5270): Add VIDIOC_G_ENC_INDEX ioctlHans Verkuil
The VIDIOC_G_ENC_INDEX ioctl can obtain the MPEG index from an MPEG encoder. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21V4L/DVB (5146): Make VIDIOC_INT_[SG]_REGISTER ioctls no longer internal onlyTrent Piepho
The direct register access ioctls were defined as kernel internal only, but they are very useful for debugging hardware from userspace and are used as such. Officially export them. VIDIOC_INT_[SG]_REGISTER is renamed to VIDIOC_DBG_[SG]_REGISTER Definition of ioctl and struct v4l2_register is moved from v4l2-common.h to videodev2.h. Types used in struct v4l2_register are changed to the userspace exportable versions (u32 -> __u32, etc). Use of VIDIOC_DBG_S_REGISTER requires CAP_SYS_ADMIN permission, so move the check into the video_ioctl2() dispatcher so it doesn't need to be duplicated in each driver's call-back function. CAP_SYS_ADMIN check is added to pvrusb2 (which doesn't use video_ioctl2). Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21V4L/DVB (5144): Restore VIDIOC_INT_[SG]_REGISTER callsTrent Piepho
Add support for these ioctls to the video_ioctl2 system and the cx88 driver. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10V4L/DVB (4861): Remove the need of a STD array for drivers using video_ioctl2Mauro Carvalho Chehab
video_ioctl2 will auto-generate standard entries at ENUM_FMT. Also, now, a driver may return a subset of the video array at the return, to be stored as the current_norm. For example, a driver may ask for V4L2_STD_PAL. At return, driver may change it to V4L2_STD_PAL_B. This way, a futher call to G_STD will return the exact detected video std. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-09-30Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (180 commits) V4L/DVB (4641): Trivial: use lowercase letters in hex subsystem ids V4L/DVB (4639): Cx88: add autodetection for alternate revision of Leadtek PVR V4L/DVB (4638): Basic DVB-T and analog TV support for the HVR1300. V4L/DVB (4637): Add a default method for VIDIOC_G_PARM V4L/DVB (4635): Extend bttv and saa7134 to check for both AGP and PCI PCI failure case V4L/DVB (4634): Zr36120: implement pcipci checks V4L/DVB (4632): Zoran: Implement pcipci failure check V4L/DVB (4631): Av7110: remove V4L2_CAP_VBI_CAPTURE flag V4L/DVB (4630): Av7110: FW_LOADER depemdency fixed V4L/DVB (4629): Saa7134: add card support for Proteus Pro 2309 V4L/DVB (4628): Fix VIDIOC_ENUMSTD ioctl in videodev.c V4L/DVB (4627): Vivi crashes with mplayer V4L/DVB (4626): On saa7111/7113, LUMA_CTRL need a different value V4L/DVB (4624): Tvaudio: Replaced kernel_thread() with kthread_run() V4L/DVB (4622): Copy-paste bug in videodev.c V4L/DVB (4620): Fix AGC configuration for MOD3000P-based boards V4L/DVB (4619): Fixes some I2C dependencies on V4L devices V4L/DVB (4617): Problem with dibusb-mb.c USB IDs V4L/DVB (4616): [PATCH] Nebula DigiTV USB RC support V4L/DVB (4614): Export symbol saa7134_tvaudio_setmute from saa7134 for saa7134-alsa ...
2006-09-26V4L/DVB (4348): Fix: compile for radio aimslab and aztech with V4L2 onlyMauro Carvalho Chehab
All radio devices use an obsolete mode of opening/release driver. Since this is not V4L1 core, better to keep the method available for more time than to rewrite open/release without a radio device to test, since the newer method is much more complex than the previous one (although providing support for multiple opens and multiple devices). Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-09-25v4l-dev2: handle __must_checkAndrew Morton
We get hundreds of these: include/media/v4l2-dev.h:348: warning: ignoring return value of 'class_device_create_file', declared with attribute warn_unused_result Handle it, and propagate the __must_check back a level. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-10V4L/DVB (4605): Fixes an issue with V4L1 and make headers-installMauro Carvalho Chehab
V4L1 support should be disabled when no CONFIG_VIDEO_V4L1_COMPAT is defined, to allow checking for broken V4L2 ports. This is very important during the migration phase for V4L2 API. However, userspace apps should be capable of using both APIs, since they need to test at runtime, via VIDIOCGCAP ioctl, if V4L1 is supported. So, when __KERNEL__ is not defined, those ioctls and corresponding structs should be visible. This patch also removes the obsolete defines HAVE_V4L1 and HAVE_V4L2, that where causing some confusion, and were replaced by CONFIG_VIDEO_V4L1_COMPAT and CONFIG_VIDEO_V4L2. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-08-08V4L/DVB (4340): Videodev.h should be included also when V4L1_COMPAT is selected.Mauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-07-29V4L/DVB (4316): Check __must_check warningsMichael Krufky
Check __must_check warnings for class_device_register and class_device_create_file video_device_create_file was declared as a void, but instead should return the int value of class_device_create_file. Move the check from bttv-driver.c into v4l2-dev.h, because all other callers of video_device_create_file must also be checked. Replace the call to class_device_create_file in videodev.c with video_device_create_file, as defined in v4l2-dev.h, so that the return value of class_device_create_file will be checked. Check the return value of class_device_register in videodev.c and pvrusb2-sysfs.c Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-26[PATCH] devfs: Remove the videodevice devfs_name field as it's no longer neededGreg Kroah-Hartman
Also fixes all drivers that set this field. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-25V4L/DVB (4189): Add videodev support for VIDIOC_S/G/TRY_EXT_CTRLS.Hans Verkuil
videodev.c copies the control list specified in struct v4l2_ext_controls to kernel space. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-25V4L/DVB (4068): Removed all references to kernel stuff from videodev.h and ↵Mauro Carvalho Chehab
videodev2.h The videodev.h and videodev2.h describe the public API for V4L and V4L2. It shouldn't have there any kernel-specific stuff. Those were moved to v4l2-dev.h. This patch removes some uneeded headers and include v4l2-common.h on all V4L driver. This header includes device implementation of V4L2 API provided on v4l2-dev.h as well as V4L2 internal ioctls that provides connections between master driver and its i2c devices. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-25V4L/DVB (4065): Several improvements at videodev.cMauro Carvalho Chehab
Videodev now is capable of better handling V4L2 api, by processing V4L2 ioctls and using callbacks to the driver. The drivers should be migrated to the newer way and the older one will be obsoleted soon. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 18:29:38 +0000