This driver were made based on tea5761 specs.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves.  This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.

It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.

The patch causes all kernel threads to be nonfreezable by default (ie.  to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE.  It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear.  Additionally, it updates documentation to
describe the freezing of tasks more accurately.

[akpm@linux-foundation.org: build fixes]
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NNigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.

This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.

In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.

Compile tested with make all{yes,mod}config on x86_64 and i386.
Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com>
Acked-by: NDave Jones <davej@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

v4l-info and other programs would loop indefinitely while querying the
tuners for cx88-blackbird cards.

The cause was that vidioc_g_tuner didn't return an error value for
qctrl->id != 0, making the application think there is a never ending
list of tuners...

This patch adds the same index check as done in vidioc_g_tuner() in
cx88-video.
Signed-off-by: NJelle Foks <jelle@foks.8m.com>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

If one uses a V4L *one* application, such as vlc or mplayer's v4l driver, as
the first user after the driver is loaded, the driver wedges itself and will
never capture properly.  Even if one uses a V4L2 application later, it still
won't work.

If one uses a V4L *two* application first, such as tvtime or mplayer's v4l2
driver, then the driver will be ok.  One can then run a V4L1 application, and
it will work.

It turns out the problem is with norm changing and the crop support that was
added in 2.6.21.  The driver defaults to PAL, and keeps the last norm it was
set too across opens.  If one changes the norm via V4L1, the cropping
parameters are not reset like they should be, and they'll remain broken across
device opens.

This patch removes the direct setting of btv->tvnorm in the V4L1 ioctl
VIDIOCSCHAN handler.  The norm is set via the existing call to set_input(),
which calls set_tvnorm(), which will reset the cropping values now that it is
able to detect the norm change.
Signed-off-by: NTrent Piepho <xyzzy@speakeasy.org>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

This patch changes the test for the thread pid from >= 0 to > 0.

When the saa8134 driver initialization fails after a certain point, it goes
through the complete shutdown process for the driver.  Part of shutting it
down includes tearing down the thread for tv audio.

The test for tearing down the thread tests for >= 0.  Since the dev
structure is kzalloc'd, the test will always be true if we haven't tried to
start the thread yet.  We end up waiting on pid 0 to complete, which will
never happen, so we lock up.

This bug was observed in Novell Bugzilla 284718, when request_irq() failed.
Signed-off-by: NJeff Mahoney <jeffm@suse.com>
Acked-by: NMauro Carvalho Chehab <mchehab@infradead.org>
Cc: <stable@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

If one has a dependency chain (tristate)FOO depends on (bool)BAR depends on
(tristate)BAZ, build problems will result.  If BAZ=m, then BAR can be set
y, which allows FOO=y.  It's possible to have FOO=y && BAZ=m, which
wouldn't be allowed if FOO depended directly on BAZ.  In effect, the bool
promotes the tristate from m to y.

This ends up causing a problem with several menuconfigs that look like:

menuconfig BAR
	bool
	depends on BAZ [tristate]
if BAR
config FOO
	tristate
endif

The solution used here is to add the dependencies of BAR to the if
statement, so that items in the if block will gain a direct
non-bool-promoted dependency on BAZ.  This is how it would work if a menu
was used instead of an if block.
Signed-off-by: NTrent Piepho <xyzzy@speakeasy.org>
Acked-by: NMauro Carvalho Chehab <mchehab@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: NJeff Garzik <jeff@garzik.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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

Signed-off-by: NJose Alberto Reguero <jareguero@telefonica.net>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The VIDIOC_CROPCAP ioctl was missing in ivtv.
The handling of output video cropping was wrong. This has now been fixed.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

V4L2_CAP_VIDEO_OUTPUT_POS was initially introduced for 2.6.22 but never
actually used: remove it before the final 2.6.22 is made.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

- fixed the urb allocation part that was not taking into account the current alternate setting
  this fixes usb_submit_urb returning -90 errno in isocIrq.
- fixed usb_submit_urb returning -1 errno in isocIrq (need to ignore usb urb with status==-ENOENT)
Acked-by: NDwaine P. Garden <dwainegarden@rogers.com>
Signed-off-by: NThierry Merle <thierry.merle@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Sliced VBI transfers use PIO instead of DMA. This was done inside the
interrupt handler, but since PIO accesses are very slow this meant that
a lot of time was spent inside the interrupt handler. All PIO copies are
now moved to a workqueue. This should fix various issues with missing time
ticks and remote key hits.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

If the SAA7111 device is powered down, and requires re-initialisation when
the V4L device is opened (as on the NetWinder), the SAA7111 driver gets
completely confused about the current settings.

The problem is centred around the way the driver keeps _two_ cached copies
of the current settings - one of the struct video_picture settings, and one
of the registers.

When the decoder is re-initailised, the cached register settings are
overwritten, as are the values in the hardware registers.  However, the
cached video_picture settings are not.

Resolve this by removing the useless and buggy second level of caching for
video_picture.  Instead, provide a function which updates register values
if and only if the value we are going to write to the register has changed.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The recent changes on Kconfig broke compilation when VIDEO_DEV is compiled
as module. On some cases, drivers like VIDEO_BUF are compiled with 'y' option
instead of 'm':

...

Thanks to: Toralf Forster <toralf.foerster@gmx.de> for pointing this issue.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

A bug in the ov7670 sensor causes it to introduce noise unless the CLKRC
register is rewritten *after* setting the image mode.  Naturally,
resetting CLKRC in this way will cause other modes to fail.  So
carefully poke the register only when indicated.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The proper method for powering down the sensor on OLPC systems has
changed somewhat; in particular, the sensor must be powered down
completely (rather than simply told to power down) or the associated
"camera active" LED will stay on.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Allow to use SECAM-BG with the FI1216MF tuner.

The selection is done with the secam=B module argument.

The default behaviour should be the same as before.
Signed-off-by: NMatthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Acked-by: NHartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Reverted the change to struct v4l2_pix_format. I completely missed that
this struct was used by existing ioctls so that changing it broke the ABI.
I will have to think of another way of setting the top/left coordinates
but for now this change is reverted to preserve compatibility.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

ivtv were wrongly marked as dependent of USB.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

.. because video-buf.c requires PCI, and VIDEO_EM28XX selects it.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Among other things, VIDIOCSPICT sets the pixel format.  Some drivers
don't support all formats, e.g. cx88 doesn't support the planar formats.
The compat code that translates VIDIOCSPICT into V4L2 ioctls doesn't pass
on any errors, so a userspace program doesn't know if it has selected an
unsupported pixel format.

VIDIOCSPICT sets both the memory capture and overlay formats, and it's
possible that one will be set while the other will fail, e.g. cx88
doesn't even support overlay.  Also, trying to set the overlay format
will fail for non-root users.
Signed-off-by: NTrent Piepho <xyzzy@speakeasy.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Drop the generic client declared in cx88-vp3054-i2c: it's not used
anywhere. This shrinks cx88-vp3054-i2c.o by 29% on x86_64. Unless it
was there for later use?
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

videodev, allow debugging
fix typo? in videodev.c to allow debugging
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

videobuf_qbuf queues buffers to q->stream but does not properly check
the state of the buffer before queueing. It was possible to queue
buffers that already were in the queue.
Only buffers that are in states STATE_NEEDS_INIT and STATE_IDLE can be
queued.
Signed-off-by: NSakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Add a small help for those two new Kconfig vars.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Change Kconfig objects from "menu, config" into "menuconfig" so
that the user can disable the whole feature without having to
enter the menu first.
Signed-off-by: NJan Engelhardt <jengelh@gmx.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

* Default color improvements to the OV7660
@ Fix sn9c102_write_reg()
@ Fix sn9c102_i2c_try_raw_read()
@ Fix MI-0343
+ Add support for pair MI0360+SN9C120
+ Add more USB ids
Signed-off-by: NLuca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Replace the call to MINOR() with a call to the inline iminor()
routine.
Signed-off-by: NRobert P. J. Day <rpjday@mindspring.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Maintainer's notice: I needed to re-number the board, since the board
number conflicted with a patch committed previously.
Signed-off-by: NJames T Klaas <jklaas@appalachian.dyndns.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Add support for the "Elitegroup ECS TVP3XP FM1246", the "KWorld DVB-T
210", and the Animation Technologies LR214 Rev F onwards (SAA7131) to
the saa7134 driver.
Also rename the LR214WF to the LR214 Rev E or ealier (SAA7135), to match
what we've seen on boards in the field.
Changed the comment on the Lifeview cards to indicate Rev E and earlier
versus Rev F and later, together with a chip indicator, following
feedback from Peter Missel <peter.missel@onlinehome.de>.
Signed-off-by: NSimon Farnsworth <simon.farnsworth@onelan.co.uk>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

This causes the cx25840 module to treat V4L2_STD_PAL_60 similar to
other 60Hz timings, and it fixes a wrongly-named variable (timings are
independant of color system).
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMike Isely <isely@pobox.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Anyone using multiple PVR USB2 devices really only want one of them
acting as the actual IR receiver.  

Implemented here is a new per-instance module option (ir_mode) which is 
a flag to enable the IR receiver.  The default is enabled.  

IR reception is disabled by blocking access to the IR receiver chip in 
the device.
Signed-off-by: NMike Isely <isely@pobox.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

This patch originated with Servaas Vandenberghe <vdb128@picaros.org>
and has been further developed a bit (to preserve saa7115 behavior).

These changes allow for correct operation of PAL-60 video (Servaas
tested this against a PAL-B/G tuner with the video standard overridden
as a module option).
Signed-off-by: NMike Isely <isely@pobox.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

sysfs is now completely out of driver/module lifetime game.

After deletion, a sysfs node doesn't access anything outside sysfs 
proper, so there's no reason to hold onto the attribute owners.

Note that often the wrong modules were accounted for as owners leading 
to accessing removed modules. 

This patch kills now unnecessary attribute->owner.  

Note that with this change, userland holding a sysfs node does not 
prevent the backing module from being unloaded. 

For more info regarding lifetime rule cleanup, please read the following 
message:
	http://article.gmane.org/gmane.linux.kernel/510293Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NMike Isely <isely@pobox.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The pvrusb2 driver use a semaphore as mutex. use the mutex API instead
of the (binary) semaphore.
Signed-off-by: NMatthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: NMike Isely <isely@pobox.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Mark the palette2pixelformat lookup table as const

pixelformat is unsigned, adjust the palette2pixelformat table and
pixelformat_to_palette()

palette_to_pixelformat() is a pure function

pixelformat_to_palette() is a const function
Signed-off-by: NTrent Piepho <xyzzy@speakeasy.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Added also some explanations about V4L1 handling
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Correct handling of VIDIOCGMBUF in video_ioctl2().
Signed-off-by: NSam Revitch <samr7@cs.washington.edu>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>