adding v4l2_device structure.
if one video_register_device call fails, allows use of other devices
or channels.
Signed-off-by: NDean Anderson <dean@sensoray.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NDean Anderson <dean@sensoray.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

big kernel lock removed from open function.
v4l2 code does not require locking the open function except
to check asynchronous firmware load state, which is protected
by a mutex
Signed-off-by: NDean Anderson <dean@sensoray.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

call to video_device_alloc was not being checked in probe function.
code simplified and uses video_device inside device structure.
Signed-off-by: NDean Anderson <dean@sensoray.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

removal of unused pipe array (of size one).
Signed-off-by: NDean Anderson <dean@sensoray.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

simplifies use of kref in driver
Signed-off-by: NDean Anderson <dean@sensoray.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The "AUVI_INPUT(tmp)" macro uses "tmp" as an index of an array with
AU0828_MAX_INPUT elements.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The following patch fixes code that checks for CX88_VMUX_TELEVISION,
but not CX88_VMUX_CABLE. This prevented for example the audio standard
from being set when using the cable input.
Signed-off-by: NIstvan Varga <istvanv@users.sourceforge.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

makes USB_PWC_INPUT_EVDEV to depend also on USB_PWC
Signed-off-by: NChristoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Never call dvb_frontend_detach if we failed to attach a frontend. This fixes
the following oops:

[    8.172997] DVB: registering new adapter (TT-Budget S2-1600 PCI)
[    8.209018] adapter has MAC addr = 00:d0:5c:cc:a7:29
[    8.328665] Intel ICH 0000:00:1f.5: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    8.328753] Intel ICH 0000:00:1f.5: setting latency timer to 64
[    8.562047] DVB: Unable to find symbol stv090x_attach()
[    8.562117] BUG: unable to handle kernel NULL pointer dereference at 000000ac
[    8.562239] IP: [<e08b04a3>] dvb_frontend_detach+0x4/0x67 [dvb_core]

Ref http://bugs.debian.org/575207

Also clean up if we are unable to register the tuner and LNB drivers

[mchehab@redhat.com: add printk log level, to calm down chechpatch.pl]
Signed-off-by: NBjørn Mork <bjorn@mork.no>
Reported-by: NFladischer Michael <FladischerMichael@fladi.at>
Acked-by: NOliver Endriss <o.endriss@gmx.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This patch adds an RC6 decoder (modes 0 and 6A) to ir-core.
Signed-off-by: NDavid Härdeman <david@hardeman.nu>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This patch adds NECx support to drivers/media/IR/ir-nec-decoder.c
Signed-off-by: NDavid Härdeman <david@hardeman.nu>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This patch adds RC5x support to drivers/media/IR/ir-rc5-decoder.c
Signed-off-by: NDavid Härdeman <david@hardeman.nu>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Fix a divide-by-zero error in ds3000's ds3000_read_snr(), when getting
a very low signal reading (dvbs2_signal_reading >= 1). This prevents
some nasty EIPs when running szap-s2 with a very low signal strength.
Signed-off-by: NNicolas Noirbent <nicolas.noirbent@smartjog.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/cpia1.c:1063: warning: ‘command_setlights’ defined but not used
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/IR/ir-raw-event.c:55: warning: ‘wq_load’ defined but not used
drivers/media/IR/ir-raw-event.c:222: warning: ‘init_decoders’ defined but not used
drivers/media/IR/rc-map.c: In function ‘get_rc_map’:
drivers/media/IR/rc-map.c:40: warning: unused variable ‘rc’
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Due to obvious copy and paste coding a number of video capture drivers
which implement a limit on the buffer memory decremented the user
supplied buffer count in a while loop until it reaches an acceptable
value.

This is a silly thing to do when the maximum value can be directly
computed.
Signed-off-by: NAndreas Bombe <aeb@debian.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This reverts commit bc52d6eb.

On newer kernels, a saa7134 board stopped to display TV video output
properly. After a bisect, I found it as the commit causing the issue.
Turns out that v4l_bound_align_image isn't doing the same bounding
calculation as manually done previously in saa7134_try_fmt_vid_cap.

What isn't equal is the calculation done in clamp align, while
previously it did "f->fmt.pix.width &= ~0x03", clamp_align function
does "Round to nearest aligned value" as stated in the comment, which
yields a different result. If I comment the round calculation in
clamp_align like this: "x = (x /*+ (1 << (align - 1))*/) & mask",
I get it fixed too, because this way the calculation is the same then.
Signed-off-by: NHerton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

In file included from drivers/media/dvb/dvb-usb/dib0700_devices.c:14:
  drivers/media/dvb/frontends/dib8000.h: In function 'dib8000_get_adc_power':
  drivers/media/dvb/frontends/dib8000.h:112: warning: no return statement in function returning non-void

Fixed by adding a return to the dummy function.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Remove unused #include <linux/version.h>('s) in
  drivers/media/dvb/ngene/ngene-core.c
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Now that video_ioctl2 no longer clobbers the argument for _IO() ioctls we
can move these into vidioc_default where they really belong.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Try to make a more sensible sequence of events in __video_do_ioctl: first
check for a valid ops pointer, then get the compat part done. The VIDIOCGMBUF
command is now part of the big switch.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

After unregister_device all fileops are blocked, except for ioctls.
So it is not just the open that is blocked, others are as well.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Note that I have not been able to find anyone with this hardware. I tried
contacting the author without success, searched on eBay and similar places
without luck either.

So this conversion is untested. That said, it was pretty straightforward
so it is time to have this driver join the V4L2 world at last.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The indentation of the sections had gone wrong, causing a mistake with
section nesting. Fixed.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The usbvision driver created vbi device nodes but the actual implementation
was just stubs and only returned errors to userspace.

In addition it used video_usercopy() and we want to remove that eventually.

So remove all the vbi code except for the vbi flag in the card definition
should someone ever be mad enough to work on a proper implementation for this
driver.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

You want to be able to reach the debug code at the end of this function,
so don't use return, use break.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

If the ioctl was defined without direction (e.g. _IO('o', 25)), then
the arg as passed to vidioc_default was NULL instead of the original
argument.

Several ioctls in e.g. include/linux/dvb/video.h and audio.h use this type
of ioctl to pass simple numerical values to the driver.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

For some reason the definition of enum v4l2_ctrl_type is far from the
place where it is actually needed. This makes it hard to work with this
header.

Move it to just before struct v4l2_queryctrl, which is the one that
actually uses it.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The spec says that the control ID for these types of controls is the same
as that of the control class. But it should read: 'control class + 1'.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

If the kmalloc() failed for "ccdc_cfg = kmalloc(...);" then we would exit
with the lock held.  I moved the mutex_lock() below the allocation
because it isn't protecting anything in that block and allocations are
allocations are sometimes slow.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Acked-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

ir-core.h has the kABI to be used by the bridge drivers, when needing to register
IR protocols and pass IR events. However, the same file also contains IR subsystem
internal calls, meant to be used inside ir-core and between ir-core and the raw
decoders.

Better to move those functions to an internal header, for some reasons:

1) Header will be a little more cleaner;

2) It avoids the need of recompile everything (bridge/hardware drivers, etc),
   just because a new decoder were added, or some other internal change were needed;

3) Better organize the ir-core API, splitting the functions that are internal to
   IR core and the ancillary drivers (decoders, lirc_dev) from the features that
   should be exported to IR subsystem clients.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/IR/ir-raw-event.c is currently written with the assumption
that all "raw" hardware will generate events only on state change (i.e.
when a pulse or space starts).

However, some hardware (like mceusb, probably the most popular IR receiver
out there) only generates duration data (and that data is buffered so using
any kind of timing on the data is futile).

Furthermore, using signed int's to represent pulse/space durations is a
well-known approach when writing ir decoders.

With this patch:

- s64 int's are used to represent pulse/space durations in ns

- a workqueue is used to decode the ir protocols outside of interrupt context

- #defines are added to make decoders clearer

- decoder reset is implemented by passing a zero duration to the kfifo queue
  and decoders are updated accordingly
Signed-off-by: NDavid Härdeman <david@hardeman.nu>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/IR/ir-sysfs.c: In function ‘store_protocol’:
drivers/media/IR/ir-sysfs.c:93: warning: suggest parentheses around assignment used as truth value
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Hardware decoders have a more limited set of decoders than software ones.
In general, they support just one protocol at a given time, but allow
changing between a few options.

Rename the previous badly named "current_protocol" as just "protocol",
meaning the current protocol(s) accepted by the driver, and
add a "support_protocols" to represent the entire universe of supported
protocols by that specific hardware.

As commented on http://lwn.net/Articles/378884/, the "one file, one value"
rule doesn't fit nor does make much sense for bitmap or enum values. So, the
supported_protocols will enum all supported protocols, and the protocol
will present all active protocols.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Some devices have in-hardware Remote Controller decoder, while others
need a software decoder to get the IR code. As each software decoder
can be enabled/disabled individually, allowing multiple protocol
decoding capability.

On the other hand, hardware decoders have a limited protocol
support, often being able of decoding just one protocol each time.
So, each type needs a different set of capabilities to control the
supported protocol(s).
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

When the remote controller class is anyway being renamed from ir to rc
this would be a good time to also rename the devices from rcrcvX to rcX.

I know we haven't reached any agreement on whether transmission will
eventually be handled by the same device, but this change will at
least make the device name non-receive-specific which will make it
possible in the future (and if a different approach is finally
agreed upon, the device name still works).
Signed-off-by: NDavid Härdeman <david@hardeman.nu>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Some spinlocks are not properly initialized on ir core:

[  471.714132] BUG: spinlock bad magic on CPU#0, modprobe/1899
[  471.719838]  lock: f92a08ac, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[  471.727301] Pid: 1899, comm: modprobe Not tainted 2.6.33 #36
[  471.733062] Call Trace:
[  471.735537]  [<c1498793>] ? printk+0x1d/0x22
[  471.739866]  [<c12694e3>] spin_bug+0xa3/0xf0
[  471.744224]  [<c126962d>] do_raw_spin_lock+0x7d/0x160
[  471.749364]  [<f92a01ff>] ? ir_rc5_register+0x6f/0xf0 [ir_rc5_decoder]

So, use static initialization for the static spinlocks, instead of the
dynamic ones (currently used), as proposed by David Härdeman on one
of his RFC patches.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The patch that adds the rc-map changes didn't take into account that an
a table with IR_TYPE_UNKNOWN would make change_protocol to return -EINVAL.

As this function is fundamental to initialize some data, including a
callback to the getkey function, this caused the driver to stop working,
hanging the machine most of the times.

The fix were simply to add a handler for the IR type, but, to avoid further
issues, explicitly call change_protocol and handle the error before
initializing the IR. Also, let input_dev to start/stop IR handling,
after the opening of the input device.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Reimplement the RC-5 decoder state machine. Code is now clear, and works
properly. It is also simpler than the previous implementations.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>