- 21 Oct, 2010 40 commits
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Mauro Carvalho Chehab authored
Instead of doing: [ 82.581639] tda18271 4-0060: creating new instance [ 82.588411] Unknown device detected @ 4-0060, device not supported. [ 82.594695] tda18271_attach: [4-0060|M] error -22 on line 1272 [ 82.600530] tda18271 4-0060: destroying instance Print: [ 468.740392] Unknown device (0) detected @ 4-0060, device not supported. for the error message, to help detecting what's going wrong with the device. This helps to detect when the driver is using the wrong I2C bus (or have the i2g gate switch pointing to the wrong place), on devices like cx231xx that just return 0 on reads to a non-existent i2c device. Reviewed-by:
Michael Krufky <mkrufky@kernellabs.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Hans Verkuil authored
This function is an internal API and belongs in v4l2-common.h, not videodev.h. The return pointer and probe argument should be const as well. Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
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Hans Verkuil authored
Missed a few init functions on non-Intel platforms the first time :-( Signed-off-by:
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Jean-François Moine authored
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Jean-François Moine <moinejf@free.fr> Signed-off-by:
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Jean-François Moine authored
With a null request byte, these commands prevented the next commands to be executed. Signed-off-by:
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Jean-François Moine authored
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Jean-François Moine authored
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Jean-François Moine authored
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Guennadi Liakhovetski authored
Multiple user-space application instances can open the same video device, but it only makes sense for one of them to manage the videobuffer queue and set video format of the device. Restrict soc-camera respectively. Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Guennadi Liakhovetski authored
Many video drivers implement a fixed set of frame formats and thus face a task of finding the best match for a user-requested format. Implementing this in a generic function has also an advantage, that different drivers with similar supported format sets will select the same format for the user, which improves consistency across drivers. Signed-off-by:
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Michael Grzeschik authored
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Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by:
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Baruch Siach authored
This allows userspace to terminate a capture without waiting for the current frame to complete. Signed-off-by:
Baruch Siach <baruch@tkos.co.il> Signed-off-by:
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Baruch Siach authored
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Michael Grzeschik authored
In the current source status the emma has no limitation for any PIXFMT since the data is parsed raw and unprocessed into the memory. Signed-off-by:
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Michael Grzeschik authored
Signed-off-by:
Philipp Wiesner <p.wiesner@phytec.de> Signed-off-by:
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Hans Verkuil authored
V4L1 is deprecated and will be removed completely soon. Signed-off-by:
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Mauro Carvalho Chehab authored
drivers/media/video/em28xx/em28xx-video.c: In function ‘vidioc_s_register’: drivers/media/video/em28xx/em28xx-video.c:1617: warning: unused variable ‘rc’ Signed-off-by: -
Hans Verkuil authored
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Hans Verkuil authored
The initial em28xx std (PAL) was not passed on to the subdevs. This led to these tvp5150 kernel log errors when running v4l2-ctl --all: tvp5150 0-005c: VBI can't be configured without knowing number of lines The reason was that tvp5150 was still using its own internal default: STD_ALL. Signed-off-by:
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Hans Verkuil authored
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Hans Verkuil authored
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Hans Verkuil authored
videobuf_waiton() must unlock and relock ext_lock if it has to wait. For that to happen it needs the videobuf_queue pointer. Don't attempt to unlock/relock q->ext_lock unless it was locked in the first place. vb->state has to be protected by a spinlock to be safe. This patch is based on code from Mauro Carvalho Chehab <mchehab@redhat.com>. [mchehab@redhat.com: add extra argument to a few missing places] Signed-off-by:
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Hans Verkuil authored
Add an ext_lock argument to the videobuf init functions. This allows drivers to pass the vdev->lock pointer (or any other externally held lock) to videobuf. For now all drivers just pass NULL. Signed-off-by:
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Hans Verkuil authored
Currently videobuf uses the vb_lock mutex to lock its data structures. But this locking will (optionally) move into the v4l2 core, which means that in that case vb_lock shouldn't be used since the external lock is already held. Prepare for this by adding a pointer to such an external mutex and don't lock if that pointer is set. Signed-off-by:
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Hans Verkuil authored
Drivers can optionally set a pointer to a mutex in struct video_device. The core will use that to lock before calling open, read, write, unlocked_ioctl, poll, mmap or release. Updated the documentation as well and ensure that v4l2-event knows about the lock: it will unlock it before doing a blocking wait on an event and relock it afterwards. Ensure that the 'video_is_registered' check is done when the lock is held: a typical disconnect will take the lock as well before unregistering the device nodes, so to prevent race conditions the video_is_registered check should also be done with the lock held. Signed-off-by:
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Hans Verkuil authored
The get_unmapped_area file operation is unused. Remove. Signed-off-by:
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Hans Verkuil authored
Until now all fops except release and (unlocked_)ioctl returned an error after the device node was unregistered. Extend this as well to the ioctl fops. There is nothing useful that an application can do here and it complicates the driver code unnecessarily. Signed-off-by:
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Mauro Carvalho Chehab authored
The driver author seems to not worked on this driver since its conversion from 2.2 to 2.4. Nobody is known to have a stradis hardware for testing. As it still uses V4L1 API, BKL and probably some other old stuff, someone would need to work on it to preserve the driver. Instead of investing time and efforts to keep porting it to work with new API's, it seems better to just drop the driver. So, let's move it to drivers/staging and label it to die at 2.6.38, if nobody cares enough to port parallel port support to gspca or to create a new driver that uses the same gspca-cpia sub-driver. Signed-off-by: -
Mauro Carvalho Chehab authored
cpia driver were re-written inside gspca driver, for USB devices. The only functionality that were not migrated is the support for parallel port, as: 1) the developer didn't find any hardware; 2) it doesn't seem important to keep support for a parallel port webcam, as this is an obsolete technology; 3) the changes at gspca for it to work with parallel port would be very large; 4) this driver still uses BKL. So, let's move it to drivers/staging and label it to die at 2.6.38, if nobody cares enough to port parallel port support to gspca or to create a new driver that uses the same gspca-cpia sub-driver. Signed-off-by: -
Mauro Carvalho Chehab authored
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Mauro Carvalho Chehab authored
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Mauro Carvalho Chehab authored
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Mauro Carvalho Chehab authored
Don't do double mutex_unlock when reading a stream at bttv_poll. Signed-off-by: -
Mauro Carvalho Chehab authored
There are a few ancillary static routines used by ioctl functions that takes bttv lock internally. As we'll be adding the same lock for all ioctl's that need, we need to properly document them, to avoid doing double locks Signed-off-by: -
Mauro Carvalho Chehab authored
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Mauro Carvalho Chehab authored
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Anatolij Gustschin authored
mpc512x kernel configurations without SPI support do not build: drivers/media/video/fsl-viu.c: In function 'viu_open': drivers/media/video/fsl-viu.c:1248: error: implicit declaration of function 'kzalloc' drivers/media/video/fsl-viu.c:1248: warning: assignment makes pointer from integer without a cast drivers/media/video/fsl-viu.c: In function 'viu_release': drivers/media/video/fsl-viu.c:1335: error: implicit declaration of function 'kfree' If CONFIG_SPI is enabled, the slab.h will be included in linux/spi/spi.h which is included by media/v4l2-common.h and the fsl_viu.c driver builds. Let's incluce linux/slab.h directly to fix the build breakage. Signed-off-by:
Anatolij Gustschin <agust@denx.de> Signed-off-by:
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Arnd Bergmann authored
The bt8xx driver only uses the big kernel lock in its dst_ca_ioctl function and never to serialize against other code, so we can trivially replace it with a private mutex. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Arnd Bergmann authored
The dvb core only uses the big kernel lock in the open and ioctl functions, which means it can be replaced with a dvb specific mutex. Fortunately, all the ioctl functions go through dvb_usercopy, so we can move the serialization in there. Signed-off-by:
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Joe Perches authored
Just fill the array as necessary and terminate with 0 Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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