kernel/git/stable/linux.git/drivers/media/video/cpia2, branch master

[media] rename most media/video usb drivers to media/usb

2012-08-15T19:25:07+00:00

Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab

[media] cpia2: Declare MODULE_FIRMWARE usage

2012-08-12T08:49:03+00:00

Cc: Mauro Carvalho Chehab Cc: Hans Verkuil Cc: linux-media@vger.kernel.org Signed-off-by: Tim Gardner Signed-off-by: Mauro Carvalho Chehab

[media] cpia2: remove V4L2_FL_LOCK_ALL_FOPS

2012-08-09T22:44:33+00:00

Add proper locking to the file operations, allowing for the removal of the V4L2_FL_LOCK_ALL_FOPS flag. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l: drop v4l2_buffer.input and V4L2_BUF_FLAG_INPUT

2012-07-05T21:00:32+00:00

Remove input field in struct v4l2_buffer and flag V4L2_BUF_FLAG_INPUT which tells the former is valid. The flag is used by no driver currently. Also change the documentation accordingly. Signed-off-by: Sakari Ailus Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-dev: add flag to have the core lock all file operations

2012-05-14T12:19:38+00:00

This used to be the default if the lock pointer was set, but now that lock is by default only used for ioctl serialization. Those drivers that already used core locking have this flag set explicitly, except for some drivers where it was obvious that there was no need to serialize any file operations other than ioctl. The drivers that didn't need this flag were: drivers/media/radio/dsbr100.c drivers/media/radio/radio-isa.c drivers/media/radio/radio-keene.c drivers/media/radio/radio-miropcm20.c drivers/media/radio/radio-mr800.c drivers/media/radio/radio-tea5764.c drivers/media/radio/radio-timb.c drivers/media/video/vivi.c sound/i2c/other/tea575x-tuner.c The other drivers that use core locking and where it was not immediately obvious that this flag wasn't needed were changed so that the flag is set together with a comment that that driver needs work to avoid having to set that flag. This will often involve taking the core lock in the fops themselves. Eventually this flag should go and it should not be used in new drivers. There are a few reasons why we want to avoid core locking of non-ioctl fops: in the case of mmap this can lead to a deadlock in rare situations since when mmap is called the mmap_sem is held and it is possible for other parts of the code to take that lock as well (copy_from_user()/copy_to_user() perform a down_read(&mm->mmap_sem) when a page fault occurs). It is very unlikely that that happens since the core lock serializes all fops, but the kernel warns about it if lock validation is turned on. For poll it is also undesirable to take the core lock as that can introduce increased latency. The same is true for read/write. While it was possible to make flags or something to turn on/off taking the core lock for each file operation, in practice it is much simpler to just not take it at all except for ioctl and leave it to the driver to take the lock. There are only a handful fops compared to the zillion ioctls we have. I also wanted to make it obvious which drivers still take the lock for all fops, so that's why I chose to have drivers set it explicitly. Signed-off-by: Hans Verkuil Acked-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab

[media] cpia2: major overhaul to get it in a working state again

2012-05-07T19:21:05+00:00

This driver was severely broken. This patch makes it work again, and updates it to the latest V4L2 frameworks (except for videobuf2). It passes the v4l2-compliance tests and it now handles suspend/resume correctly. Several custom controls are replaced by new standard controls, only the USB_ALTERNATE control remains. Tested with the Hanse HVS-CM500PC USB microscope. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

drivers/media: Add module.h to all files using it implicitly

2011-10-31T23:31:51+00:00

A pending cleanup will mean that module.h won't be implicitly everywhere anymore. Make sure the modular drivers in clocksource are actually calling out for explicitly in advance. Signed-off-by: Paul Gortmaker

[media] Stop using linux/version.h on most video drivers

2011-07-27T20:53:12+00:00

All the modified drivers didn't have any version increment since Jan, 1 2011. Several of them didn't have any version increment for a long time, even having new features and important bug fixes happening. As we're now filling the QUERYCAP version with the current Kernel Release, we don't need to maintain a per-driver version control anymore. So, let's just use the default. In order to preserve the Kernel module version history, a KERNEL_VERSION() macro were added to all modified drivers, and the extraver number were incremented. I opted to preserve the per-driver version control to a few pwc, pvrusb2, s2255, s5p-fimc and sh_vou. A few drivers are still using the legacy way to handle ioctl's. So, we can't do such change on them, otherwise, they'll break. Those are: uvc, et61x251 and sn9c102. The rationale is that the per-driver version control seems to be actively maintained on those. Yet, I think that the better for them would be to just use the default version numbering, instead of doing that by themselves. While here, removed a few uneeded include linux/version.h Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] cpia2: fix warning about invalid trigraph sequence

2011-05-26T00:42:19+00:00

Signed-off-by: Hans Petter Selasky Signed-off-by: Mauro Carvalho Chehab

[media] cpia2: fix typo in variable initialisation

2011-05-20T12:30:21+00:00

Currently 'fh' initialises to whatever happens to be on stack. This looks like a typo and this patch fixes that. Signed-off-by: Mariusz Kozlowski Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab