Add a waitqueue to wait on when there are no buffers in the buffer queue.
DQBUF waits on this queue without holding vb_lock to allow a QBUF to happen.
Once a buffer has been queued we recheck that the queue is still streaming and
wait on the new buffer's waitqueue while holding the vb_lock. The driver
should come along in a timely manner and put the buffer into its next state
finishing the DQBUF.
By implementing this waitqueue it also brings the videobuf DQBUF up to spec and
it now blocks on O_NONBLOCK even when no buffers have been queued via QBUF:
"By default VIDIOC_DQBUF blocks when no buffer is in the outgoing queue."
- V4L2 spec
Signed-off-by: Brandon Philips <bphilips@suse.de>
CC: Trent Piepho <xyzzy@speakeasy.org>
CC: Carl Karsten <carl@personnelware.com>
CC: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
vivi previously had a very complex queuing system and held spinlocks while
doing copy_to_user, kmalloc, etc. This caused the driver to easily deadlock
when a multi-threaded application used it and revealed bugs in videobuf too.
This replaces the copy_to_user with memcpy since we were never copying to user
space addresses. And makes the kmalloc atomic.
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
vivi currently doesn't have the infrastructure to handle being opened more than
one time and will crash if it is. So, make it openable only once.
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Remove the buf_release on vm_close because it will lead to a buffer being
released multiple times since all buffers are already freed under the two
possible cases: device close or STREAMOFF.
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The waitqueues must be woken up every time state changes.
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
tuner-simple is the only module that uses tuner-types - these will be
merged to a single module in the future. For now, build both of them
if TUNER_SIMPLE is selected.
This fixes the following build warning, if tuner-simple is selected
without tuner-types:
WARNING: "tuner_count" [tuner-simple.ko] undefined!
WARNING: "tuners" [tuner-simple.ko] undefined!
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Show IF level and rf agc top settings in standard map dumps.
Dump standard map during attach if DBG_MAP or DBG_ADV is set.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch makes the needlessly global sn9c102_i2c_try_write() static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
CC: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch adds a proper prototype for zr36016_write() in
drivers/media/video/zoran_card.h
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Detect Leadtek Winfast USB DTV Dongle with ID of 0x6f01
Signed-off-by: Darryl Green <darryl.green@aanet.com.au>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Alexander Simon found out that the Terratec Cinergy T USB XXS is just a clone of another DiB7070P-based device.
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch enables support for repeating last event when a key is holded
down with dib0700 devices. It works with rc5 and nec remotes.
It also fixes an annoying bug that floods kernel log with "Unknown key"
messages after each keypress. This happened because the driver was not
resetting infrared register after each poll so it kept polling last key
even if nothing was being pressed. Fixing this, (calling rc_setup after
each poll), permits to implement key repeat.
Signed-off-by: Filippo Argiolas <filippo.argiolas at gmail.com>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Added support for Technotrend connect S-2400.
Signed-off-by: Andre Weidemann <Andre.Weidemann@web.de>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
To support a new device based on CX24123 (using the CX24113-tuner) the following was done:
- added two parameters to de-select the internal PLL-driver (for CX24108) and a AGC-function callback.
- added a virtual i2c-adapter which allow simple access behind the i2c-gate
- cleanup up some code
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
To prepare the support for new device to the flexcop-family some preparation and cleanups was done + some saneness:
- created an i2c-adapter for each i2c-port available. Easier usage for devices with several device on different i2c-busses
- initialize i2c before doing the eeprom read
- changed the way to attach the different frontends, easier to read now
- enabled support for i2c-devices having no register address (1-byte access)
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
An enabled color killer will not degrade picture quality for color
input signals, only suppress bogus color information on
black-and-white input. Therefore enable it by default.
Signed-off-by: Frej Drejhammar <frej.drejhammar@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Thanks to timf <timf@iinet.net.au>, "Richard (MQ)" <osl2008@googlemail.com> and
gian luca rasponi <lucarasp@inwind.it> for their tests.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The cx2388x family has a color killer. This patch implements the
V4L2_CID_COLOR_KILLER control for the cx2388x family. By default the
color killer is disabled, as in previous versions of the driver.
Signed-off-by: "Frej Drejhammar <frej.drejhammar@gmail.com>"
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
An enabled chroma AGC will not degrade picture quality if enabled on a
color PAL or NTSC signal with nominal signal levels. It will give a
significant color reproduction improvement if the chroma signals
diverge from nominal levels. Therefore enable chroma AGC by default
for PAL and NTSC standards.
Signed-off-by: "Frej Drejhammar <frej.drejhammar@gmail.com>"
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The cx2388x family has support for chroma AGC. This patch implements a
the V4L2_CID_CHROMA_AGC control for the cx2388x family. By default
chroma AGC is disabled, as in previous versions of the driver.
Signed-off-by: "Frej Drejhammar <frej.drejhammar@gmail.com>"
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
If the IR worker is not stopped before the removal of the cx88xx module,
an OOPS may occur, because the worker function cx88_ir_work gets called.
So stop the ir worker.
Signed-off-by: Marton Balint <cus@fazekas.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This board has a s5h1409 demod, plus a xc30x8 tuner (probably, xc3018).
This patch adds proper support for radio, video, s-video, composite and ATSC.
However, support for radio and video depends on having s5h1409 i2c gate open,
otherwise, xc30x8 chip won't be visible.
For a better support, some rework is needed on cx88 driver, to allow adding
xc30x8 to i2c bus without sending i2c 0 byte reading to 0xc2 address.
Thanks to Vanessa Ezekowitz <vanessaezekowitz@gmail.com> for helping to figure
out the proper parameters for s5h1409 and the GPIO pins used by each
configuration.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Fix use of a non-int (size_t) being passed in a printf width field.
This benign issue has apparently been around for a long time, but went
undetected until now.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Update Kconfig for the hybrid devices recently converted
to use tuner-simple rather than dvb-pll.
dvb-bt8xx no longer uses dvb-pll at all, so remove all
references to dvb-pll within that driver.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Fix the following build error:
In file included from dvb-bt8xx.c:35:
dvb-bt8xx.h:42:26: error: tuner-simple.h: No such file or directory
dvb-bt8xx.c: In function 'frontend_init':
dvb-bt8xx.c:612: error: 'simple_tuner_attach' undeclared (first use in this function)
dvb-bt8xx.c:612: error: (Each undeclared identifier is reported only once
dvb-bt8xx.c:612: error: for each function it appears in.)
dvb-bt8xx.c:612: warning: type defaults to 'int' in declaration of '__a'
dvb-bt8xx.c:612: warning: type defaults to 'int' in declaration of 'type name'
dvb-bt8xx.c:612: warning: cast from pointer to integer of different size
dvb-bt8xx.c:612: warning: type defaults to 'int' in declaration of 'type name'
dvb-bt8xx.c:612: warning: cast from pointer to integer of different size
dvb-bt8xx.c:612: error: called object '__a' is not a function
dvb-bt8xx.c:696: warning: type defaults to 'int' in declaration of '__a'
dvb-bt8xx.c:696: warning: type defaults to 'int' in declaration of 'type name'
dvb-bt8xx.c:696: warning: cast from pointer to integer of different size
dvb-bt8xx.c:696: warning: type defaults to 'int' in declaration of 'type name'
dvb-bt8xx.c:696: warning: cast from pointer to integer of different size
dvb-bt8xx.c:696: error: called object '__a' is not a function
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
There are a number of different firmware versions and variants, shipped
together with boards.
This patch adds an extra parameter to the tuner-xc2028 to allow specifying for
an specific firmware name to be loaded. This helps to test for a firmware that
better fits some board.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Force the main pll charge pump or cal pll charge pump to source current
to the main pll loop filter or cal pll loop filter, respectively.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Set rfagc to high speed mode before setting the pll.
Set rfagc to normal speed mode at the end of the function.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
allow device-specific configuration of rf agc rf top and if top
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The internal calibration signal must be set on the cal pll.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Both the tda18271 c1 and c2 parts only need EP3 through MD3 to be written for
the image rejection calibration's low band initialization.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The ability to select RF input was a supported feature only available on
Philips TUV1236d and Philips FCV1236d.
This feature, along with support for the tuners that used it,
was moved into the tuner-simple module.
This can now be removed from dvb-pll.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
remove #if 0'd support for:
Philips TUV1236D
Philips TD1316
Philips FMD1216ME
LG TDVS-H06xF
Philips FCV1236D
Thomson FE6600
Microtune 4042 FI5
Thomson dtt761x
Support for these tuners has been moved into the 'tuner-simple' module.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
