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wake_up_interruptible_nr()
While looking at use cases of the wake queues in order to add support
for simple wait queues, I noticed that there was only a single user of
wake_up_interruptible_nr(), and that use was doing a single task wake
up. Have that user use the proper wake_up_interruptible() instead, and
perhaps we can even remove the function wake_up_interruptible_nr().
Signed-off-by: Steven Rostedt <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Using 8 URBs results in a consecutive buffer allocation of too much
memory for some arm devices.
As we use isochronuous transfers the number of URBs can be reduced
without risking data-loss.
Signed-off-by: Christian Loepke <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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i2c_driver does not need to set an owner because i2c_register_driver()
will set it.
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Use eth_zero_addr to assign the zero address to the given address
array instead of memset when second argument is address of zero.
Note that the 6 in the third argument of memset appears to represent
an ethernet address size (ETH_ALEN).
The Coccinelle semantic patch that makes this change is as follows:
// <smpl>
@eth_zero_addr@
expression e;
@@
-memset(e,0x00,6);
+eth_zero_addr(e);
// </smpl>
Signed-off-by: Vaishali Thakkar <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This patch removes unneded goto,
reported by coccinelle.
Signed-off-by: Maninder Singh <[email protected]>
Reviewed-by: Akhilesh Kumar <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Devices that were using a8293 SEC are converted to I2C platform data
thus that old config structure is left unused.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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These things are only initialized if you start streaming video, but
they are also used in the disconnect function. So just init them
always during probe time.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The standards supported by S-Video and Composite inputs are not
limited by PAL, so make it more generic.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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In various places the stack was used to provide buffers for USB data, but
this should be allocated memory.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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If remove_pending is non-zero, then the v4l2_lock is never unlocked.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Set the colorspace and field in vidioc_try_fmt_vid_cap().
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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- setup initial radio and tv frequencies.
- set/get the correct frequency (radio vs tv).
- disable tuner/freq ioctls if there is no tuner.
- fix some tuner index checks.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The radio device node had the same caps as the video node. Fix this.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The g/s_audio ioctls didn't do anything, so remove them all for both
video and radio nodes and remove V4L2_CAP_AUDIO.
The enum/g/s_input ioctls are invalid for radio nodes, so remove them
from the radio ioctl_ops.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Don't return -1, return a proper error code.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Convert this driver to the control framework and struct v4l2_fh
(needed for handling control events).
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This causes lots of problems and is *very* slow as well.
One of the main problems is that this prohibits the use of the control
framework since subdevs will be unloaded on power off which is not allowed
as long as they are used by a usb device.
Apparently the reason for doing this is to turn off a noisy tuner. My hardware
has no problem with that, and I wonder whether the hardware with that noisy
tuner wasn't just functioning improperly as I have never heard of noisy tuners.
Contact me if you have one of those devices and I can take a look whether the
tuner can't be powered off if necessary by letting the tuner subdevice go
into standby mode. Unloading the tuner module is just evil and is not the
right approach.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This commit implements frame decimation for stk1160, which allows
to support format changes instead of a static frame size.
The stk1160 supports independent row and column decimation, in two
different modes:
* set a number of rows/columns units to skip for each unit sent.
* set a number of rows/columns units to send for each unit skipped.
This effectively allows to achieve different frame scaling ratios.
The unit number can be set to either two row/columns sent/skipped,
or four row/columns sent/skipped. Since the video format (UYVY)
has 4-bytes, using a unit number of two row/columns results
in frame color 'shifting', so set to four row/columns sent/skipped.
Signed-off-by: Michael Stegemann <[email protected]>
Signed-off-by: Dale Hamel <[email protected]>
Signed-off-by: Ezequiel Garcia <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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These messages are not really informational, and just makes the driver's
output too verbose. This commit changes some messages to a debug level,
removes a really useless "driver loaded" message and finally undefines
the DEBUG macro.
Signed-off-by: Ezequiel Garcia <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Use kernel.h macro definition.
Thanks to Julia Lawall for Coccinelle scripting support.
Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This changes the keymap back to the state before commit 616a4b83
and changes the driver to use full NEC32 scancodes following the
instructions provided by Malcolm Priestley <[email protected]>.
Signed-off-by: David Härdeman <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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API compliance scanning with coccinelle flagged:
./drivers/media/usb/gspca/m5602/m5602_s5k83a.c:180:9-25:
WARNING: timeout (100) seems HZ dependent
Numeric constants passed to schedule_timeout() make the effective
timeout HZ dependent which makes little sense in a polling loop for
the cameras rotation state.
Fixed up by converting the constant to jiffies with msecs_to_jiffies()
Signed-off-by: Nicholas Mc Guire <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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We already know status is negative because of the earlier check so there
is no need to check again.
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Fix the sequence counter: we're counting frames, not fields.
Also remove the unused 'field' field. That would only be needed if this driver
would support V4L2_FIELD_ALTERNATE.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Relative measurements are typically between 0 and 0xffff. However,
for some tuners (TUNER_S7395 and TUNER_S0194), the range were from
0 to 0xff00, with means that 100% is never archived.
Also, TUNER_RS2000 uses a more complex math.
So, create a macro that does the conversion using bit operations
and use it for all conversions.
The code is also easier to read with is a bonus.
While here, remove a bogus comment.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Cleanup this sparse warning:
drivers/media/usb/dvb-usb-v2/lmedm04.c:302 lme2510_update_stats() warn: should '((255 - st->signal_sn - 161) * 3) << 8' be a 64 bit type?
Both c_tmp and s_tmp actually stores a u16 stat. Using a u64 data
there is a waste, specially on u32 archs, as 64 ints there are more
expensive.
So, change the types to u32 and do the typecast only when storing
the result.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The attribution of dev->boards occured too late, which
would couse an OOPS in media controller registration.
Signed-off-by: Rafael Lourenço de Lima Chehab <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Indroduce function lme2510_update_stats to update
statistics directly from usb interrupt.
Provide signal and snr wrap rounds for dvb v3 functions.
Block and post bit are not available.
When i2c_talk_onoff is on no statistics are available,
with possible future hand over to the relevant frontend/tuner.
Signed-off-by: Malcolm Priestley <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Following a change made to TS2020 tuner in patches
ts2020: Provide DVBv5 API signal strength
ts2020: Allow stats polling to be suppressed
Polling on the driver must be suppressed because
the demuxer is stopped by I2C messages.
Signed-off-by: Malcolm Priestley <[email protected]>
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The TS2020 and TS2022 tuners take an input from the demodulator indicating the
AGC setting on that component that is then used to influence the tuner's own
gain. This should be taken into account when calculating the gain and signal
strength.
Further, the existing TS2020 driver miscalculates the signal strength as the
result of its calculations can exceed the storage capacity of the 16-bit word
used to return it to userspace.
To this end:
(1) Add a callback function (->get_agc_pwm()) in the ts2020_config struct that
the tuner can call to get the AGC PWM value from the demodulator.
(2) Modify the TS2020 driver to calculate the gain according to Montage's
specification with the adjustment that we produce a negative value and
scale it to 0.001dB units (which is what the DVBv5 API will require):
(a) Callback to the demodulator to retrieve the AGC PWM value and then
turn that into Vagc for incorporation in the calculations. If the
callback is unset, assume a Vagc of 0.
(b) Calculate the tuner gain from a combination of Vagc and the tuner's RF
gain and baseband gain settings.
(3) Turn this into a percentage signal strength as per Montage's
specification for return to userspace with the DVBv3 API.
(4) Provide a function in the M88DS3103 demodulator driver that can be used to
get the AGC PWM value on behalf of the tuner.
(5) The ts2020_config.get_agc_pwm function should be set by the code that
stitches together the drivers for each card.
For the DVBSky cards that use the M88DS3103 with the TS2020 or the TS2022,
set the get_agc_pwm function to point to m88ds3103_get_agc_pwm.
I have tested this with a DVBSky S952 card which has an M88DS3103 and a TS2022.
Thanks to Montage for providing access to information about the workings of
these parts.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Use I2C client binding for demod and SEC.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Add support for the Terratec Grabby with USB ID 0ccd:00a6.
Signed-off-by: Tommi Rantala <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Some USB drivers have a logic at the VB buffer handling like:
if (in_interrupt())
BUG();
Use, instead:
BUG_ON(in_interrupt());
Btw, this logic looks weird on my eyes. We should convert them
to use VB2, in order to avoid those crappy things.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Lad, Prabhakar <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The DVB API was originally defined using typedefs. This is against
Kernel CodingStyle, and there's no good usage here. While we can't
remove its usage on userspace, we can avoid its usage in Kernelspace.
So, let's do it.
This patch was generated by this shell script:
for j in $(grep typedef include/uapi/linux/dvb/frontend.h |cut -d' ' -f 3); do for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f); do sed "s,${j}_t,enum $j," <$i >a && mv a $i; done; done
While here, make CodingStyle fixes on the affected lines.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Stefan Richter <[email protected]> # for drivers/media/firewire/*
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Fix this compiler warning by allocating a structure to read the eeprom instead
of doing it on the stack and worse: the eeprom array is static, so that can
cause problems if there are multiple cx231xx instances.
cx231xx-cards.c: In function 'cx231xx_card_setup':
cx231xx-cards.c:1110:1: warning: the frame size of 2064 bytes is larger than 2048 bytes [-Wframe-larger-than=]
}
^
I did consider removing the code altogether since the result is actually
not used at the moment, but I decided against it since it is used in other
drivers and someone might want to start using it in this driver as well. And
then it is useful that the code is already there.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Implement DMABUF exporting and importing.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Load PCTV 460e tda10071 demod and a8293 SEC using I2C client bindings.
Remove old unused tda10071 config struct. We are using I2C platform
data now.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Add support for DVB SEC (satellite equipment controller) I2C client.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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There's a dead code on usbvision that makes it harder to read
and produces a smatch warning about bad identation.
Improve the code readability and add a FIXME to warn about
the current hack there.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Smatch reports a warning:
drivers/media/usb/tm6000/tm6000-video.c:646 tm6000_prepare_isoc() error: we previously assumed 'dev->urb_buffer' could be null (see line 624)
This is not really a problem, but it actually shows that the check
if urb_buffer is NULL is being done twice: at the if and at
tm6000_alloc_urb_buffers().
We don't need to do it twice. So, remove the extra check. The code
become cleaner, and, as a collateral effect, smatch becomes happy.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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As reported by smatch:
drivers/media/usb/em28xx/em28xx-video.c:842 get_ressource() info: ignoring unreachable code.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The UVC_DEV_DISCONNECTED flag is set when the USB device is
disconnected, and checked in the open() handler to refuse opening a
device that has been disconnected.
This is inherently racy, but the race condition is taken care of in the
V4L2 core, which also fails open() calls when the V4L2 device node has
been unregistered. As the uvcvideo USB disconnect handler unregisters
all its video device nodes, the UVC_DEV_DISCONNECTED flag doesn't serve
any purpose anymore and can be removed.
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The "TOSHIBA Web Camera - 5M" Chicony device (04f2:b50b) seems to
compute the bandwidth on 16 bits and erroneously sign-extend it to
32 bits, resulting in a huge bandwidth value. Detect and fix that
condition by setting the 16 MSBs to 0 when they're all equal to 1.
Reported-by: Hans de Goede <[email protected]>
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Now that videobuf2-vmalloc supports exporting buffers, add support for
the DMABUF exporter role by plugging in the videobuf2 ioctl helper.
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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It is AF9035 + MxL5007T.
Driver reports:
prechip_version=00 chip_version=03 chip_type=3802
Not sure if that USB ID is reserved only for HP brand or if it is
common, but the stick I have is branded as HP part no. 580715-001
rmn A867.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Autogain algorithm is very simple, if average luminance is low - increase gain,
if it's high - decrease gain. Gain granularity is low enough for this algo to
stabilize quickly.
Signed-off-by: Vasily Khoruzhick <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This cam seems to return different values on long commands, so make status check
in sn9c2028_long_command() more tolerant. Anyway, read value isn't used anywhere
later.
Signed-off-by: Vasily Khoruzhick <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Load rtl2832_sdr driver for devices having fc2580 tuner.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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rtl2832 demod driver has support for FC2580 tuner config, no need to
abuse FC0012 settings anymore.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Change tua9001 driver from media binding to I2C client binding.
Signed-off-by: Antti Palosaari <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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