Reported by, and based on a patch from, Martin Dauskardt.

The AUDIO_AC3_BITRATE control is still missing from this list, but such
optional controls are a bit hard to handle. This will be fixed automatically
when we switch to the control framework.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Reported-by: NMartin Dauskardt <martin.dauskardt@gmx.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This patch converts the remaining users of flush_scheduled_work() in
media/video.

* bttv-input.c and cx23885-input.c don't use workqueue at all.  No
  need to flush.

* Make omap24xxcam.c and saa7134-empress.c flush the used work
  directly.

* In fd_defio.c, replace cancel_delayed_work() +
  flush_scheduled_work() with cancel_delayed_work_sync().  While at
  it, replace the deprecated cancel_rearming_delayed_work() with
  cancel_delayed_work_sync().
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>

The big kernel lock has been removed from all these files at some point,
leaving only the #include.

Remove this too as a cleanup.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add an ext_lock argument to the videobuf init functions. This allows
drivers to pass the vdev->lock pointer (or any other externally held lock)
to videobuf. For now all drivers just pass NULL.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: NTejun Heo <tj@kernel.org>
Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

An earlier commit removed the lock_kernel/unlock_kernel pair but forgot
to remove the unlock_kernel call in the cleanup path at the end of the
function.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Now that the video_device registration is tested using
video_is_registered(), drivers don't need to initialize the
video_device::minor field to -1 anymore.

Remove those unneeded assignments.

[mchehab.redhat.com: removed tm6000 changes as tm6000 is not ready yet for submission even on staging]
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Instead of using the minor number in kernel log messages, use the device
node name as returned by the video_device_node_name() function. This
makes debug, informational and error messages easier to understand for
end users.

[mchehab.redhat.com: removed tm6000 changes as tm6000 is not ready yet for submission even on staging]
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Fix all device drivers to use the video_drvdata function instead of
maintaining a local list of minor to private data mappings. Call
video_set_drvdata to register the driver private pointer when not
already done.

Where applicable, the local list of mappings is completely removed when
it becomes unused.

[mchehab.redhat.com: removed tm6000 changes as tm6000 is not ready yet for submission even on staging]
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Fix all device drivers to use the new video_device_node_name function.

This also strips kernel log messages from the "/dev/" prefix, has the device
node location is a userspace policy decision unknown to the kernel.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

1. Add start/stop TS function.
2. Move setup DMA of TS to DMA function.
3. Write support cupture via MMAP
4. Rework startup and finish process, remove simple FSM.
Tested-by: NHermann Pitton <hermann-pitton@arcor.de>
Tested-by: NBeholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: NBeholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: NAlexey Osipov <lion-simba@pridelands.ru>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

When we capture signal from composite input offen lost and found syncro
sequence. In this case the MPEG coder hardware reset after each
lost/found event. The image has a lot of artefactes. This patch remove
hardware reset of MPEG encoder.

This is patch from our customer. I checked this.

With my best regards, Dmitry.
Signed-off-by: NAlexey Osipov <lion-simba@pridelands.ru>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This card has the saa6752hs on 7-bit address 0x21 instead of 0x20. Add
support in the card definition struct to select which address to use and
update the definitions accordingly.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The v4l2_ctrl_query_fill_std() function wasn't one the best idea I ever had.
It doesn't add anything valuable that cannot be expressed equally well with
v4l2_ctrl_query_fill and only adds overhead.

Replace it with v4l2_ctrl_query_fill() everywhere it is used and remove it
from v4l2_common.c.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Control arrays as are used with v4l2_ctrl_next must be sorted from
low to high. Add a comment at the top of all such arrays to warn
about this.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Register v4l2_device and switch to v4l2_subdev to access the i2c modules.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Since the i2c driver ID will be removed in the near future we have to
modify the v4l2 debugging API to use the driver name instead of driver ID.

Note that this API is not used in applications other than v4l2-dbg.cpp
as it is for debugging and testing only.

Should anyone use the old VIDIOC_G_CHIP_IDENT, then this will be logged
with a warning that it is deprecated and will be removed in 2.6.30.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Introduce a struct v4l2_file_operations for v4l2 drivers.

Remove the unnecessary inode argument.

Move compat32 handling (and llseek) into the v4l2-dev core: this is now
handled in the v4l2 core and no longer in the drivers themselves.

Note that this changeset reverts an earlier patch that changed the return
type of__video_ioctl2 from int to long. This change will be reinstated
later in a much improved version.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The kernel number of a v4l2 node (e.g. videoX, radioX or vbiX) is now
independent of the minor number. So instead of using the minor field
of the video_device struct one has to use the num field: this always
contains the kernel number of the device node.

I forgot about this when I did the v4l2 core change, so this patch
converts all drivers that use it in one go. Luckily the change is
trivial.

Cc: michael@mihu.de
Cc: mchehab@infradead.org
Cc: corbet@lwn.net
Cc: luca.risolia@studio.unibo.it
Cc: isely@pobox.com
Cc: pe1rxq@amsat.org
Cc: royale@zerezo.com
Cc: mkrufky@linuxtv.org
Cc: stoth@linuxtv.org
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

When changing the standard the saa6752hs was not updated unless the input
was the TV tuner. The saa6752hs should be updated regardless of the input.

In addition the S_STD and G_STD ioctls for the mpeg video device didn't do
anything. This is now fixed: they behave just like S_STD and G_STD on the
video0 device.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Additional code to improve the init sequence and add board type tests
were done by Hans Verkuil.
Signed-off-by: NBeholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Cleaned up the saa6752hs i2c driver.
Add AC-3 support.
Add VIDIOC_CHIP_IDENT support.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The BKL is now moved from the video_open function in v4l2-dev.c to the
various drivers. It seems about a third of the drivers already has a
lock of some sort protecting the open(), another third uses
video_exclusive_open (yuck!) and the last third required adding the
BKL in their open function.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

ts_release() locked a mutex that videobuf_stop() also tried to obtain.
But ts_release() shouldn't hold that mutex at all.

Make empress_users atomic as well to prevent possible race condition.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

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: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The field 'dev' is not the video device, but the parent of the video device.
Rename accordingly.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The MPEG controls could not be enumerated and so could not be read or set
through the v4l2-ctl utility or shown in control panels.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

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: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The saa7134 driver uses a (non-atomic) variable in an attempt to
only allow one opener of the device (how it deals with sending
the fd over unix sockets I don't know).

Unfortunately, the release function first decrements this variable,
and THEN goes on to disable more of the device. This allows for
a race where another opener of the device comes in after the decrement of
the variable, configures the hardware just to then see the hardware
be disabled by the rest of the release function.

This patch makes the release function use the same lock as the open
function to protect the hardware as well as the variable (which now
at least has some locking to protect it).
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

decrementing dev->empress_users should be done as last action of ts_release,
because it sleeps and write access to dev->empress_started is not protected
in any way
(additionally closing thread could mute audio after opening thread unmuted it)
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

If I try v4l2-ctl --all -d /dev/video1 or v4l2-ctl --streamon -d /dev/video1
modules crashed:

*pde = 00000000
Modules linked in: ac battery loop saa7134_empress(F) saa6752hs(F) tuner_simple(F) tuner_types(F) tea5767(F) tda9887(F) tda8290(F) tea5761(F) tuner(F) snd_cmipci snd_pcm snd_page_alloc snd_opl3_lib saa7134(F) snd_mpu401 parport_pc parport snd_timer snd_hwdep snd_mpu401_uart floppy rtc psmouse videodev(F) v4l1_compat(F) compat_ioctl32(F) v4l2_common(F) videobuf_dma_sg(F) videobuf_core(F) snd_rawmidi snd_seq_device via_ircc pcspkr snd ir_kbd_i2c(F) irda soundcore ir_common(F) crc_ccitt tveeprom(F) i2c_viapro i2c_core button via_agp agpgart evdev ext3 jbd mbcache ide_cd_mod cdrom ide_disk 8139cp via82cxxx ide_core 8139too mii ehci_hcd uhci_hcd usbcore thermal processor fan

EIP is at __mutex_lock_slowpath+0x29/0x7b
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process v4l2-ctl (pid: 2742, ti=ced7e000 task=cf325260 task.ti=ced7e000)
       d08e5411 00000000 ced7fed4 00000000 d0975acb 40045612 cfa86ee0 ffffffcd
       cf2b7000 ced7febc c03858d6 00000019 00000292 d089e4ec cf37b2a0 d089e4a0
Call Trace:
 [<c028b52b>] mutex_lock+0xa/0xb
 [<d08e5411>] videobuf_streamon+0xf/0x9a [videobuf_core]
 [<d0975acb>] __video_do_ioctl+0x136a/0x2d68 [videodev]
 [<d088f789>] task_end_request+0x40/0x51 [ide_core]
 [<d088c4aa>] ide_intr+0x187/0x192 [ide_core]
 [<c016a551>] mntput_no_expire+0x11/0x64
 [<c0160b1c>] path_walk+0x90/0x98
 [<d0977738>] video_ioctl2+0x173/0x239 [videodev]
 [<c0140936>] filemap_fault+0x202/0x370
 [<c014930a>] __do_fault+0x2c3/0x2fe
 [<c014ab03>] handle_mm_fault+0x22a/0x49f
 [<c0162737>] vfs_ioctl+0x47/0x5d
 [<c0162992>] do_vfs_ioctl+0x245/0x258
 [<c01629e6>] sys_ioctl+0x41/0x5b
 [<c01036a6>] sysenter_past_esp+0x5f/0x85
 =======================

After this fix all of that commands works without problem:

v4l2-ctl --all -d /dev/video1

Driver Info:
	Driver name   : saa7134
	Card type     : Beholder BeholdTV M6 Extra
	Bus info      : PCI:0000:00:0d.0
	Driver version: 526
	Capabilities  : 0x05000001
		Video Capture
		Read/Write
		Streaming
Format Video Capture:
	Width/Height  : 720/576
	Pixel Format  : MPEG
	Field         : Any
	Bytes per Line: 0
	Size Image    : 58656
	Colorspace    : Unknown (00000000)
Video input : 0 (CCIR656)
Video Standard = 0x000000ff
	PAL-B/B1/G/H/I/D/D1/K


P.S. data from /dev/video1 is not correct :(( .
Signed-off-by: NBeholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

This is patch for fix data structure in querycap syscall.
Signed-off-by: NBeholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

videobuf-dma-sg does not need to depend on PCI. Switch it to using generic
DMA API, convert all affected drivers, relax Kconfig restriction, improve
compile-time type checking, fix some Coding Style violations while at it.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

- Static memory is always initialized with 0.
- Replaced in some cases C99 comments for /* */
Signed-off-by: NDouglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

videobuf functions at close() method already locks videobuf. It makes no sense
to keep the locking at empress close() method.

There is also a lock at open() method. I'm not sure if it is safe to remove the
locking there.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>