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From: Hans Verkuil <hverkuil@xs4all.nl>
Introduce a struct v4l2_file_operations for v4l2 drivers.
Remove the unnecessary inode argument.
Move compat32 handling (and llseek) into the v4l2-dev core: this is now
handled in the v4l2 core and no longer in the drivers themselves.
Note that this changeset reverts an earlier patch that changed the return
type of__video_ioctl2 from int to long. This change will be reinstated
later in a much improved version.
Priority: normal
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Andy Walls <awalls@radix.net>
A combined authorship patch from Hans Verkuil and Andy Walls. Raw
VBI can now be captured but requires a video capture to be in progress as well.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Andy Walls <awalls@radix.net>
This is a port of the fixes Hans Verkuil made for ivtv/cx25840:
The service_set field was used to determine whether raw or sliced VBI was
desired. This is incorrect since it is perfectly valid to select sliced VBI
with a service_set of 0.
Instead the driver should check on VIDIOC_S_FMT whether the type
field matches the raw or sliced VBI type.
Updated the cx18 driver accordingly, including an additional check in
cx18_start_v4l2_encode_stream() that didn't exist in ivtv.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Andy Walls <awalls@radix.net>
cx18: Allow more than 63 capture buffers in rotation per stream. Implement
q_busy to hold buffers the firmware has for use. q_free holds truly unused
buffers in a pool. New buffers are given to the firmware as soon as the
firmware returns one, if there are any to give to the firmware.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Andy Walls <awalls@radix.net>
Eliminate q_io from stream buffer handling in anticipation of upcoming
changes in buffer handling. q_io was a holdover from ivtv and it's function
in cx18 was trivial and not necessary. We just push things back onto the
front of q_full now, instead of maintaining a 1 buffer q_io queue.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Andy Walls <awalls@radix.net>
Add copyright attribution for files modified by awalls in 2008
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Andy Walls <awalls@radix.net>
cx18: Create cx18_ specific wrappers for all pci mmio accessesors. This is a
first step in instrumenting all CX23418 PCI bus IO, to debug problems with
accessing the CX23418's PCI memory mapped IO.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Andy Walls <awalls@radix.net>
cx18: Fix cx18_find_handle() and add error checking. cx18_find_handle() did
not find a good task handle and would use the invalid task handle under common
conditions. Added a define for the invalid task handle and added error checking
as well.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Andy Walls <awalls@radix.net>
cx18: Convert cx18_queue buffers member to atomic_t. This allows safe
concurrent access to check if a queue has data without having to acquire the
queue spinlock.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Andy Walls <awalls@radix.net>
cx18: Remove redundant struct cx18_queue length member. It can be trivially
computed from queue->buffers * stream->buf_size, if ever really needed.
Priority: normal
Signed-off-by: Andy Walls <awalls@radix.net>
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From: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
The HVR-1600 can do both analog and digital capture at the same time.
Due to a driver bug -EBUSY would be returned when attempting to setup an
analog capture while a digital capture was already in progress.
Separate the two internally.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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Andy Walls <awalls@radix.net>
Upon error conditions in cx18/ivtv_probe(), the code at the 'err:' label
leaves a NULL entry in cx18/ivtv_cards[]. This can cause a NULL pointer
de-reference in cx18/ivtv_v4l2_open() which is fixed by this patch.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Adrian Bunk <bunk@kernel.org>
This patch contains the following possible cleanups:
- cx18-i2c.c should #include "cx18-i2c.h" for getting the prototypes of
it's global functions
- make the following needlessly global functions static:
- cx18-fileops.c:cx18_claim_stream()
- cx18-fileops.c:cx18_release_stream()
- cx18-queue.c:cx18_queue_move()
- remove the following unused functions:
- cx18-driver.c:cx18_waitq()
- cx18-queue.c:cx18_buf_copy_from_user()
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Many thanks to Steve Toth from Hauppauge and Nattu Dakshinamurthy from
Conexant for their support. I am in particular thankful to Hauppauge
since without their help this driver would not exist. It should also
be noted that Steve did the work to get the DVB part up and running.
Thank you!
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: G. Andrew Walls <awalls@radix.net>
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