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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
There are some cases where nobody is waiting for a buffer. Due to the
lack of check, if you try to abort the userspace app, machine were
hanging, since IRQ were trying to use a buffer that were disallocated.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Before the patch, there were a risk of freeing and unmapping userspace memory,
while there were pending requests.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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Currently, vidioc_s_fmt_cap is allowed even if streaming is running on some
other fh. This is likely to cause issues.
Block use of vidioc_s_fmt_cap if someone else has claimed access to the device.
Signed-Off-By: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
It seems that we don't need a timeout for em28xx.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
There were a small bug on videobuf-vmalloc that were preventing STREAMOFF to
work. The issue is that vmalloc'ed mmaped memory should only be freed after
being sure that there aren't any mmap usage. Otherwise, the memory remap will
stop working, and the userspace won't receive any frames.
This bug were affecting some userspace applications, like tvtime.
After this patch, tvtime started to work again with the drivers that use
videobuf-vmalloc.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
There were some bugs on videobuf-vmalloc.
Basically, remap were called with a wrong parameter. Due to that, a later remap
were needed, generating the need of some hacks on videobuf-vmalloc and
videobuf-core.
This patch fixes the remap and removes the hacks.
TODO:
- V4L2_MEMORY_USERPTR is not implemented yet. This method should be
properly implemented, in order to work with a few userspace applications.
- The driver also doesn't implement V4L2_MEMORY_OVERLAY. This method is used
only by a few applications, and are becaming obsolete, due to the increment
of cpu performance. So, most apps prefer to retrieve data to an internal
buffer, doing some processing like de-interlacing.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Brandon Philips <bphilips@suse.de>
I did notice a possible memory leak since iolock is could possibly be
called before a buffer has been freed.
This ensure s_fmt isn't called while the queue is busy thereby avoiding
iolock on already allocated buffers.
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
- Remove dead code;
- Fix a few CodingStyle issues;
- Prints frame number, if debug is enabled.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Aidan Thornton <makosoft@googlemail.com>
- Aborting buffer_filled if no-one's waiting on the waitqueue probably isn't
what we want, since just because no-one's waiting for it now doesn't mean they
wouldn't dequeue it in time. (vivi gets away with this, possibly because it
can fill each buffer much faster.)
- The first BUG_ON(lencopy <= 0); really isn't worth causing a kernel panic
over, especially since there are some reasons why it could trigger in normal use.
- The top and botom frames are actually the wrong way around.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
This changeset were supposed to optimize mmap() support on vmalloc. However, it
just broke mmap() on real devices. Revert the changeset to make mmap() to work
again.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
The last videobuf changes introduced several CodingStyle errors. Fixes all those
errors, as reported by checkpatch.pl
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Also removes the dead restart_video_queue() function
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Aidan Thornton <makosoft@googlemail.com>
It fixes a couple of minor bugs, comments out a bogus BUG_ON, sets fh->type
correctly, uses dev->width and dev->height for now, and adds a missing spinlock
init (nasty - caused a system lockup). It also adds some debug code which
probably isn't all that useful. I haven't tested this version of the patch yet,
though, so I'm not sure what you can expect if you try it.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
The usage of videobuf-vmalloc allows to cleanup em28xx logic.
Also, it reduced its size by about 5.42% on i386 arch (and about 7.5% on x86_64):
39113 4876 40 44029 abfd old/em28xx.ko
36731 4868 40 41639 a2a7 /home/v4l/master/v4l/em28xx.ko
Also, the preliminary tests, made on a single core 1.5 MHz Centrino showed
that CPU usage reduced from 42%-75% to 28%-33% (reports from "top") command.
A test with time command presented an even better result:
This is the performance tests I did, running code_example to get 1,000 frames
@29.995 Hz (about 35 seconds of stream), tested on a i386 machine, running at
1,5GHz:
The old driver:
$ time -f "%E: %Us User time, %Ss Kernel time, %P CPU used" ./capture_example
0:34.21: 8.22s User time, 25.16s Kernel time, 97% CPU used
The videobuf-based driver:
$ time -f "%E: %Us User time, %Ss Kernel time, %P CPU used" ./capture_example
0:35.36: 0.01s User time, 0.05s Kernel time, 0% CPU used
Conclusion:
The time consumption to receive the stream where reduced from about 33.38
seconds to 0.05 seconds.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
If frontend is not attached, both cx88-dvb and saa7134-dvb don't
register DVB. However, dvb unregister were inconditionally called.
Due to that, an OOPS is generated.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Janne Grunau <janne-dvb@grunau.be>
The adapter_nr module options can be used to allocate static adapter
numbers on a driver level. It avoids problems with changing DVB apapter
numbers after warm/cold boot or device unplugging and repluging.
Each driver holds DVB_MAX_ADAPTER long array of the preferred order of
adapter numbers.
options dvb-usb-dib0700 adapter_nr=7,6,5,4,3,2,1,0 would result in a
reversed allocation of adapter numbers.
With adapter_nr=2,5 it tries first to get adapter number 2 and 5. If
both are already in use it will allocate the lowest free adapter number.
Signed-off-by: Janne Grunau <janne-dvb@grunau.be>
Acked-by: Hermann Pitton <hermann.pitton@arcor.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Added the last remaining out-of-tree kernel driver from the ivtv project.
The saa717x is used in several Japanese cards and a Russian card. The
driver is not complete in that only NTSC is supported and no PAL/SECAM.
Hopefully this will be added in the future.
Signed-off-by: Takahiro Adachi <tadachi@tadachi-net.com>
Signed-off-by: Kyuma Ohta <whatisthis@jcom.home.ne.jp>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Mike Isely <isely@pobox.com>
Apparently the kernel developers no longer consider it proper
etiquette to use __FUNCTION__; everyone must instead use __func__
(even though it breaks with older compilers). And worse still, actual
effort is being expended to sweep this change throughout the kernel
source tree. Don't these people have better things to do? So...
Completely clean out all use of __FUNCTION__ from the pvrusb2 driver
(it was just in the sysfs interface). I'm not going to use __func__
either. So there.
Signed-off-by: Mike Isely <isely@pobox.com>
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From: Mike Isely <isely@pobox.com>
The pvrusb2 driver was getting had by this scenario:
1. Task A calls kthread_stop() for task B.
2. Before exiting, then Task B calls kthread_stop() for task C.
The problem is, kthread_stop() wants to allocate an internal resource
to itself (i.e. acquire a lock), which won't be released until
kthread_stop() returns. But kthread_stop() won't return until task B
is dead. But task B won't die until it finishes its call to
kthread_stop() for task C, and that will block waiting on the resource
already allocated inside task A. Deadlock.
With the pvrusb2 driver, task A is the caller to pvr_exit(), task B is
the control thread run inside of pvrusb2-context.c, and task C is any
worker thread run inside of pvrusb2-hdw.c.
This problem got introduced by the previous threading setup change,
which was itself an attempt to fix a module tear-down race (which it
actually did fix). The lesson here is that a task being waited on as
part of a kthread_stop() simply cannot be allow to also issue a
kthread_stop() - or we make sure not to issue the enclosing
kthread_stop() until we know that the inner kthread_stop() has
completed first. The solution for the pvrusb2 driver is some hackish
code which changes the main control thread tear down into a two step
process. This then makes it possible to delay issuing the
kthread_stop() on the control thread until after we know that
everything has been torn down first. (And yes, we really need that
kthread_stop() because it's the only way to safely guarantee that a
module-referencing kernel thread has safely returned back out of the
module before we finally remove the module.)
Signed-off-by: Mike Isely <isely@pobox.com>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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Add support for composite and s-video inputs on
Avermedia DVB-S Pro and DVB-S Hybrid+FM cards
(both labled A700) to the saa7134 driver.
XC2028 support for Hybrid+FM is still missing.
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Dâniel Fraga <fragabr@gmail.com>
The attached patch adds complete remote control support for
Powercolor Real Angel 330.
Signed-off-by: Daniel Fraga <fragabr@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Dâniel Fraga <fragabr@gmail.com>
The attached patch fixes gpio references for Powercolor Real Angel 330.
Signed-off-by: Daniel Fraga <fragabr@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Mike Isely <isely@pobox.com>
Earlier fix to handle DVB feed thread aborts was overly-aggressive.
We can take better advantage of what kthread_stop() can do. This
change simplifies things.
Signed-off-by: Mike Isely <isely@pobox.com>
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