On some situations, closing an streaming application and re-opening were
returning -EBUSY.
Uses the same locking schema also present on cx88.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Allows shared access support for em28xx. Just one userspace application is
allowed to get stream. The other(s) application(s) can change V4L2 controls,
set video standards, etc.
This patch were splited from Markus Rechberger's tree and backported to 2.6.17
by Pádraig Brady.
The original patch were ported to the latest em28xx version and had CodingStyle
corrected to solve the issues pointed by scripts/checkpatch.pl.
Thanks to Pádraig Brady <P@draigBrady.com> for pointing this.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Adds autodetection support for the Cinergy200 USB and the VGear PocketTV.
Whenever a usb device with generic empia em2800 usb ids is detected the device
gets scanned for connected i2c devices. If the device list matches an em2800
device in the device list the model id gets changed accordingly.
Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
attached patch adds support for the vgear pockettv.
It seems to require a write to another register for audio to work.
I checked my old cinergydrv and we did the same register write there. I
therefore enabled it for all em2800 based devices.
Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The attached patch modifies the em28xx driver so that there can be ioctls from
multiple different threads.
This is necessary for capture apps like MPlayer that use different threads for
capturing and channel tuning.
Now the locking is only done for the ioctls that change properties of the
device or access the i2c bus.
It also removes some locks that look unnecessary:
In em28xx_init_dev:
the videodevice is not registered yet so nothing can access the hardware
meanwhile, the device struct is not assigned to the interface yet so no race
with disconnect is possible
In em28xx_release_resources:
it gets only called when dev->lock is already held
Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch adds a function to allow trying to detect boards that shares
the generic IDs.
The current detection method is based at eeprom checksum.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch contains the following possible cleanups:
- make the following needlessly global functions static:
- em28xx-core.c: em28xx_accumulator_set()
- em28xx-core.c: em28xx_capture_area_set()
- em28xx-core.c: em28xx_scaler_set()
- em28xx-core.c: em28xx_isocIrq()
- remove the following unused EXPORT_SYMBOL's:
- em28xx-cards.c: em28xx_boards
- em28xx-cards.c: em28xx_bcount
- em28xx-cards.c: em28xx_id_table
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Adding support for Terratec Prodigy XS
Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Fixed VBI compilation.
- Included capacity to specify vbi and video number.
- Added a better control for using more than one em28xx device.
- VIDIOC_G_FMT now calls a function.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Now, all internal ioctls are at v4l2-common.h
- removed unused ioctl at saa6752hs.h
- all debug ioctl code moved to v4l2-common.c
- removed duplicated stuff from other cards
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
- Created a new ioctl to control I2S speed. Old calls to an
inadequate V4L2 API replaced.
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
- Fixed autodetection of max size by if alternate setting
- Fixed some debug messages
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Several Improvement on I2C IR handling for em2820:
- moved Pinnacle IR table (ir_codes_em2820) to em2820-input.c
- IR struct renamed and moved to a header file.
- New file to handle em2820-specific IR.
- Some cleanups.
- attach now detects I2C IR and calls em2820-specific IR code
- IR compat code moved to compat.h
- New header with struct IR_i2c there, to allow it to be
used by board-specific input handlers.
- Some improvements at em28xx board detection:
- Board detection message improved to show interface and class.
- Now it doesn't touch audio interfaces.
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Included support for em2800.
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Added support for em28xx board family
Signed-off-by: Ludovico Cavedon <cavedon@sssup.it>
Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
