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path: root/linux/drivers/media/video/uvc/uvc_driver.c
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2009-01-14uvcvideo: Add support for the Alcor Micro AU3820 chipset.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The Alcor Micro AU3820 chipset (found in the Future Boy PC USB webcam) requires the MINMAX quirk. Add a corresponding entry in the device IDs list. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-01-08uvcvideo: replace strn{cpy,cat} with strl{cpy,cat}.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> strncpy is unsafe as it doesn't append a terminating NUL character when the source string doesn't fit in the destination buffer. Replace it with strlcpy. strncat is misused as its size argument refers to the source string, not the destination buffer. Replace it with strlcat. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-01-08merge: http://linuxtv.org/hg/~pinchartl/uvcvideoMauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@redhat.com> Priority: normal Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-07removed unused #include <version.h>'sMauro Carvalho Chehab
From: Huang Weiyi <weiyi.huang@gmail.com> Removed unused #include <version.h>'s in files below, drivers/media/video/cs5345.c drivers/media/video/pwc/pwc-if.c drivers/media/video/saa717x.c drivers/media/video/upd64031a.c drivers/media/video/upd64083.c drivers/media/video/uvc/uvc_ctrl.c drivers/media/video/uvc/uvc_driver.c drivers/media/video/uvc/uvc_queue.c drivers/media/video/uvc/uvc_video.c drivers/media/video/uvc/uvc_status.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-03uvcvideo: Print the UVC version number in binary-coded decimal.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The UVC specification release number is a binary-coded decimal number, print it as such. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-01-03uvcvideo: Whitespace and comments cleanup, copyright updates.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-12-29uvcvideo: Add support for video output devicesLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Extend the range of supported UVC devices by allowing video output devices matching the following structure: TT_STREAMING -> VC_PROCESSING_UNIT -> VC_EXTENSION_UNIT{0,n} -> OTT_* Video output devices are reported with the V4L2_CAP_VIDEO_OUTPUT capability flag and are subject to the same restrictions as video input devices. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-12-29uvcvideo: Ignore interrupt endpoint for built-in iSight webcams.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Built-in iSight webcams have an interrupt endpoint but spit proprietary data that don't conform to the UVC status endpoint messages. Don't try to handle the interrupt endpoint for those cameras. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-12-06uvcvideo: Add a device quirk to prune bogus controls.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Bogus controls currently include processing unit auto controls for which no corresponding manual control is available. Such auto controls make little sense if any, and are known to crash at least the SiGma Micro webcam. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-12-06uvcvideo: Add nodrop module parameter to turn incomplete frame drop off.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The driver drops incomplete uncompressed video frames to avoid confusing userspace with corrupt data. Add a nodrop module parameter to turn that behaviour off and make all frames available to userspace. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-11-11uvcvideo: Fix unaligned memory access.Laurent Pinchart
From: Michael Hennerich <michael.hennerich@analog.com> Use the unaligned memory access macros when accessing unaligned memory. Priority: normal Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-11-11uvcvideo: Enable compilation on kernels older than 2.6.22Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The uvcvideo driver makes use of the usb_endpoint_* functions as well as the list_first_entry and uninitialized_var macros. Add them to v4l/compat.h and update the driver with kernel version-based conditional compilation sections. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-11-08uvcvideo: Handle failed video GET_{MIN|MAX|DEF} requests more gracefullyLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Failed requests will now generate a one-time warning message instead of the usual "Failed to query..." error, which should be more user-friendly. The driver will also recover automatically from failed GET_MIN/GET_MAX requests when the device is half-broken without requiring the MINMAX quirk (fully broken devices still need the quirk). Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-11-08uvcvideo: Sort the frame descriptors during parsingLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The UVC specification does not require frame descriptors to be sorted by bFrameIndex. At least one camera (145f:013e) is known not to sort the descriptors properly, so they need to be sorted during parsing as the driver then accesses them by index. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-11-08uvcvideo: Add support for Lenovo Thinkpad SL500 integrated webcamLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-11-08uvcvideo: Add support for Samsung Q310 integrated webcamLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2008-09-21uvcvideo: Support two new Bison Electronics webcams.Mauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> This adds required quirks for the Compaq Presario B1200 and Acer Travelmate 7720 integrated webcams. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-09-16uvcvideo : Add support for Advent 4211 integrated webcamMauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-08-31uvcvideo: fix compilation on older kernelsHans Verkuil
From: Laurent Pinchart <laurent.pinchart@skynet.be> The USB reset_resume method appeared in 2.6.23. This patch fixes compilation of the v4l-dvb tree on older kernels. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2008-08-29uvcvideo: Add support for a Bison Electronics webcam found in the Fujitsu ↵Mauro Carvalho Chehab
Amilo SI2636. From: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-08-22uvcvideo: Implement the USB power management reset_resume method.Mauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> When a suspended device has been reset instead of being resumed, USB core calls the reset_resume method if available instead of unbinding and rebinding the device. This patch implements reset_resume by reusing the current resume implementation and simplifies the resume method by skipping the controls restore stage. Resuming from autosuspend should be faster. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-30uvcvideo: Add support for two Bison Electronics webcamsMauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> The Bison Electronics 5986:0300 and 5986:0303 webcams require the UVC_QUIRK_PROBE_MINMAX quirk. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-26v4l2-dev: remove unused type and type2 field from video_deviceHans Verkuil
From: Hans Verkuil <hverkuil@xs4all.nl> The type and type2 fields were unused and so could be removed. Instead add a vfl_type field that contains the type of the video device. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2008-07-20videodev: rename 'dev' to 'parent'Hans Verkuil
From: Hans Verkuil <hverkuil@xs4all.nl> The field 'dev' is not the video device, but the parent of the video device. Rename accordingly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2008-07-11uvcvideo: Fix possible AB-BA deadlock with videodev_lock and open_mutexMauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> The uvcvideo driver's uvc_v4l2_open() method is called from videodev's video_open() function, which means it is called with the videodev_lock mutex held. uvc_v4l2_open() then takes uvc_driver.open_mutex to check dev->state and avoid racing against a device disconnect, which means that open_mutex must nest inside videodev_lock. However uvc_disconnect() takes the open_mutex around setting dev->state and also around putting its device reference. However, if uvc_disconnect() ends up dropping the last reference, it will call uvc_delete(), which calls into the videodev code to unregister its device, and this will end up taking videodev_lock. This opens a (unlikely in practice) window for an AB-BA deadlock and also causes a lockdep warning because of the lock misordering. Fortunately there is no apparent reason to hold open_mutex when doing kref_put() in uvc_disconnect(): if uvc_v4l2_open() runs before the state is set to UVC_DEV_DISCONNECTED, then it will take another reference to the device and kref_put() won't call uvc_delete; if uvc_v4l2_open() runs after the state is set, it will run before uvc_delete(), see the state, and return immediately -- uvc_delete() does uvc_unregister_video() (and hence video_unregister_device(), which is synchronized with videodev_lock) as its first thing, so there is no risk of use-after-free in uvc_v4l2_open(). Bug diagnosed based on a lockdep warning reported by Romano Giannetti <romano@dea.icai.upcomillas.es>. Signed-off-by: Roland Dreier <roland@digitalvampire.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-09uvcvideo : Add support for Asus F9GS integrated webcamMauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-07uvcvideo : Add support for Medion Akoya Mini E1210 integrated webcamMauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-04uvcvideo: Fix a buffer overflow in format descriptor parsingMauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@skynet.be> Thanks to Oliver Neukum for catching and reporting this bug. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-30From: Laurent Pinchart <laurent.pinchart@skynet.be>Mauro Carvalho Chehab
USB Video Class driver This driver supports video input devices compliant with the USB Video Class specification. This means lots of currently manufactured webcams, and probably most of the future ones. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Notice: Due to MAINTAINERS file that isn't at mercurial tree, I've committed it on my -git and backported to -hg. kernel-sync: Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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