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Laurent Pinchart 1651333b09 [media] media: Entities, pads and links enumeration 
Create the following two ioctls and implement them at the media device
level to enumerate entities, pads and links.

- MEDIA_IOC_ENUM_ENTITIES: Enumerate entities and their properties
- MEDIA_IOC_ENUM_LINKS: Enumerate all pads and links for a given entity

Entity IDs can be non-contiguous. Userspace applications should
enumerate entities using the MEDIA_ENT_ID_FLAG_NEXT flag. When the flag
is set in the entity ID, the MEDIA_IOC_ENUM_ENTITIES will return the
next entity with an ID bigger than the requested one.

Only forward links that originate at one of the entity's source pads are
returned during the enumeration process.

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 04:53:14 -03:00
..
dvb [media] DocBook/v4l: update V4L2 revision and update copyright years 2011-01-19 11:51:33 -02:00
v4l [media] media: Entities, pads and links enumeration 2011-03-22 04:53:14 -03:00
.gitignore documentation: ignore byproducts from latex 2009-04-02 19:04:53 -07:00
80211.tmpl mac80211: add doc short section on LED triggers 2011-01-10 15:40:52 -05:00
alsa-driver-api.tmpl ALSA: Move ALSA docbooks to be with the rest of the kernel docbooks 2009-03-09 15:22:59 +01:00
debugobjects.tmpl debugfs: Fix terminology inconsistency of dir name to mount debugfs filesystem. 2009-06-15 21:30:28 -07:00
device-drivers.tmpl docbook: fix broken serial to tty/serial movement 2011-01-22 20:13:56 -08:00
deviceiobook.tmpl docbook: fix errors from x86 headers merger 2010-03-03 07:32:39 -08:00
drm.tmpl drm: fix wrong usages of drm_device in DRM Developer's Guide 2011-02-15 09:01:29 +10:00
filesystems.tmpl Docbook: add fs/eventfd.c and fix typos in it 2011-02-21 15:07:04 -08:00
gadget.tmpl usb gadget: cdc obex glue 2008-10-17 14:40:53 -07:00
genericirq.tmpl genirq-update-kerneldoc.patch 2010-10-12 16:39:07 +02:00
kernel-api.tmpl docbook: add idr/ida to kernel-api docbook 2010-10-26 17:40:56 -07:00
kernel-hacking.tmpl docbook: fix signal_pending() argument 2009-12-09 18:59:52 -08:00
kernel-locking.tmpl Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu 2010-10-07 09:43:11 +02:00
kgdb.tmpl kdb: Add kdb kernel module sample 2010-10-29 13:14:39 -05:00
libata.tmpl Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev 2010-05-20 09:27:37 -07:00
librs.tmpl
lsm.tmpl Add missing section ID to lsm.tmpl 2008-02-07 08:42:16 -08:00
Makefile Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem 2010-08-25 14:51:42 -04:00
mcabook.tmpl Rationalise Randy's address a bit 2008-10-30 11:38:47 -07:00
media-entities.tmpl [media] media: Entities, pads and links enumeration 2011-03-22 04:53:14 -03:00
media-indices.tmpl V4L/DVB (13572): v4l2-spec: Digital Video Timings API documentation 2009-12-16 00:18:04 -02:00
media.tmpl [media] media: Media device 2011-03-22 04:53:09 -03:00
mtdnand.tmpl tree-wide: fix comment/printk typos 2010-11-01 15:38:34 -04:00
networking.tmpl wimax: Makefile, Kconfig and docbook linkage for the stack 2009-01-07 10:00:17 -08:00
rapidio.tmpl docbook: fix fatal rapidio yet again (and more to come) 2008-04-29 20:40:00 -07:00
regulator.tmpl regulator: Add basic DocBook manual 2009-01-08 20:10:34 +00:00
s390-drivers.tmpl docbook: fix s390 fatal error after header files moved 2008-08-05 16:56:29 -07:00
scsi.tmpl Documentation: update broken web addresses. 2010-08-04 15:21:40 +02:00
sh.tmpl sh: clkfwk: Kill off unused clk_set_rate_ex(). 2010-11-15 18:25:12 +09:00
stylesheet.xsl docbook: use IDs as filenames to support multiple books 2010-08-05 13:21:24 -07:00
tracepoint.tmpl workqueue: Add a workqueue chapter to the tracepoint docbook 2010-08-27 12:27:36 +02:00
uio-howto.tmpl Documentation: change email address for Hans Koch 2010-11-18 15:00:46 -08:00
usb.tmpl
writing-an-alsa-driver.tmpl ALSA: Update the documentation for changes of proc files 2010-04-13 12:55:09 +02:00
writing_usb_driver.tmpl USB: rename usb_buffer_alloc() and usb_buffer_free() users 2010-05-20 13:21:38 -07:00
z8530book.tmpl Rationalise Randy's address a bit 2008-10-30 11:38:47 -07:00