kernel/drivers/media/usb/uvc, branch linux-4.3.y

[media] uvcvideo: Remove unneeded device disconnected flag

2015-05-30T15:12:58Z

The UVC_DEV_DISCONNECTED flag is set when the USB device is disconnected, and checked in the open() handler to refuse opening a device that has been disconnected. This is inherently racy, but the race condition is taken care of in the V4L2 core, which also fails open() calls when the V4L2 device node has been unregistered. As the uvcvideo USB disconnect handler unregisters all its video device nodes, the UVC_DEV_DISCONNECTED flag doesn't serve any purpose anymore and can be removed. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: Fix incorrect bandwidth with Chicony device 04f2:b50b

2015-05-30T15:12:15Z

The "TOSHIBA Web Camera - 5M" Chicony device (04f2:b50b) seems to compute the bandwidth on 16 bits and erroneously sign-extend it to 32 bits, resulting in a huge bandwidth value. Detect and fix that condition by setting the 16 MSBs to 0 when they're all equal to 1. Reported-by: Hans de Goede Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: Implement DMABUF exporter role

2015-05-30T15:11:40Z

Now that videobuf2-vmalloc supports exporting buffers, add support for the DMABUF exporter role by plugging in the videobuf2 ioctl helper. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: add support for VIDIOC_QUERY_EXT_CTRL

2015-04-10T13:29:27Z

Add support for the new VIDIOC_QUERY_EXT_CTRL ioctl. Since uvc doesn't use the control framework, support for this ioctl isn't automatic. This is makes v4l2-compliance happy as well. [Added blank lines for improved readability] Signed-off-by: Hans Verkuil Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: fix cropcap v4l2-compliance failure

2015-04-10T13:26:02Z

The v4l2-compliance tool expects that if VIDIOC_CROPCAP is defined, then VIDIOC_G_SELECTION for TGT_CROP_BOUNDS/DEFAULT is also defined (or COMPOSE in the case of an output device). In fact, all that a driver has to do to implement cropcap is to support those two targets since the v4l2 core will implement cropcap and fill in the pixelaspect to 1/1 by default. Implementing cropcap is only needed if the pixelaspect isn't square. So implement g_selection instead of cropcap in uvc to fix the v4l2-compliance failure. [Added blank lines for improved readability] Signed-off-by: Hans Verkuil Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvc: embed video_device

2015-04-08T09:47:13Z

Embed the video_device struct to simplify the error handling and in order to (eventually) get rid of video_device_alloc/release. Signed-off-by: Hans Verkuil Cc: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: Validate index during step-wise frame intervals enumeration

2015-04-02T20:31:48Z

Frame intervals exposed as an interval and step (so-called step-wise) are restricted by the V4L2 API to a single enumeration entry. Return an error when the index is not zero. Reported-by: Alexey Smirnoff Signed-off-by: Laurent Pinchart [mchehab@osg.samsung.com: add a missing collon at the end of the return statement, in order to avoid compilation breakage] Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: Recognize the Tasco USB microscope

2015-04-02T20:30:05Z

The device is based on an Aveo chipset, implements UVC but advertises a vendor-specific class on all interfaces. Support it by listing the USB VID:PID explicitly. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: Don't call vb2 mmap and get_unmapped_area with queue lock held

2015-04-02T20:29:28Z

videobuf2 has long been subject to AB-BA style deadlocks due to the queue lock and mmap_sem being taken in different orders for the mmap and get_unmapped_area operations. The problem has been fixed by making those two operations callable without taking the queue lock, using an mmap_lock internal to videobuf2. The uvcvideo driver still calls the mmap and get_unmapped_area operations with the queue lock held, resulting in a potential deadlock. As the operations can now be called without locking the queue, fix it. Reported-by: Bjørn Mork Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvcvideo: remove unnecessary version.h inclusion

2015-01-27T12:39:34Z

Based on versioncheck. Signed-off-by: Fabian Frederick Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab