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path: root/linux/drivers/media/video/uvc/uvc_driver.c
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2009-08-09fix device match logicMauro Carvalho Chehab
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com> I forgot to change USB_DEVICE_ID_MATCH_VENDOR to USB_DEVICE_ID_MATCH_DEVICE in the last commit, defeating its whole purpose. Fix this. kernel-sync: Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-07-02uvcvideo: Multiple streaming interfaces supportLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Restructure the UVC descriptors parsing code to handle multiple streaming interfaces. The driver now creates a uvc_video_chain instance for each chain detected in the UVC control interface descriptors, and tries to register one video device per streaming endpoint. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-06-28uvcvideo: Restructure the driver to support multiple simultaneous streams.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> As a first step towards multiple streaming interfaces support, reorganize the driver's data structures to cleanly separate video control and video streaming data. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-07-20uvcvideo: Don't apply the FIX_BANDWIDTH quirk to all ViMicro devicesLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Commit 50144aeeb702ea105697ae5249f059ea3990b838 broke the Samsung NC10 netbook webcam. Instead of applying the FIX_BANDWIDTH quirk to all ViMicro devices, list the devices explicitly. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-07-19uvcvideo: Add PROBE_DEF quirk and enable it for the MT6227 deviceLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> At least one MT6227 model crashes when receiving a GET_DEF request on the video probe control. As the various models can't be told apart based on the descriptors, add a PROBE_DEF quirk to avoid sending the GET_DEF request and enable the quirk for all models. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-07-03uvcvideo: Set PROBE_MINMAX quirk for Aveo Technology webcamsLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Some Aveo Technology USB 2.0 Camera (1871:0306) revisions seem to require the PROBE_MINMAX quirk. As the camera supports uncompressed YUYV data only, it's safe to set the quirk even if not strictly required for all models. Update the device entry in the device IDs list. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-06-26uvcvideo: Prefix all UVC constants with UVC_Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> In preparation to moving UVC constants to a public location, prefix all constants with UVC_ to avoid namespace clashes. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-06-26uvcvideo: Use class-specific descriptor types from usb/ch9.hLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> uvcvideo.h redefines class-specific descriptor types already present in usb/ch9.h. Remove the duplicated definitions and use the ones from usb/ch9.h. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-06-09uvcvideo: Ignore non-UVC trailing interface descriptors.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Herton Ronaldo Krzesinski from Mandriva reported that one Bison Electronics webcam exposes a non-UVC interface descriptor. Instead of failing completely, ignore trailing non-UVC descriptors and move on. Thanks to Herton for reporting the problem and submitting a patch proposal. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-06-09uvcvideo: Add support for FSC V30S webcamsLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The FSC WebCam V30S (18ec:3288) requires the MINMAX quirk. Add a corresponding entry in the device IDs list. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-06-09uvcvideo: Add support for Aveo Technology webcamsLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The Aveo Technology USB 2.0 Camera (1871:0306) requires the PROBE_EXTRAFIELDS quirk. Add a corresponding entry in the device IDs list. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-05-31uvcvideo: Add generic control blacklist.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Another device (5986:0241) has been reported to advertise a UVC control it does not support. Rework the control blacklist to match devices by their VID:PID instead of trying to be clever about which controls might not be supported properly. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-05-25merge: http://linuxtv.org/hg/~pinchartl/uvcvideo/Mauro Carvalho Chehab
From: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-05-19uvcvideo: Add Lenovo Thinkpad SL400 to device list commentsLaurent Pinchart
From: Filipe Rosset <rosset.filipe@gmail.com> Update the 17ef:480b device comment to list Lenovo Thinkpad SL400. Priority: low Signed-off-by: Filipe Rosset <rosset.filipe@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-05-19uvcvideo: Start status polling on device openLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Most UVC camera include an interrupt endpoint to report control value changes, video streaming errors and camera button events. The USB controller continuously polls the interrupt endpoint to retrieve such events. This prevents the device from being auto-suspended, and thus consumes power. Reporting video streaming errors don't make sense when the V4L2 device is closed. Control value changes are probably useless as well if nobody listens to the events, although caching will probably have to be completely disabled then. No polling is thus be required when /dev/videoX is not opened. To enable auto-suspend and save power do not poll the interrupt endpoint until the device is open. We lose the ability to detect button events if no application is using the camera. http://bugzilla.kernel.org/show_bug.cgi?id=11948 Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-05-06uvcvideo: Add missing whitespaces to multi-line format strings.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-05-06uvcvideo: Parse frame descriptors with non-continuous indexes.Laurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> The UVC specification requires frame descriptors indexes to range from 1 to the number of frame descriptors. At least some Hercules Dualpix Infinite webcams erroneously use non-continuous index ranges. Make the driver support them. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-05-02uvc: fix compile warningMauro Carvalho Chehab
From: Hans Verkuil <hverkuil@xs4all.nl> The 2.6.30 kernel generates this warning: uvc_driver.c:1729: warning: 'ret' may be used uninitialized in this function I guess some new warning flag must have been turned on since this warning didn't appear with older kernels (gcc version 4.3.1). It's also a bogus warning, but since this code didn't comply to the coding standard anyway I've modified it to 1) remove the warning and 2) conform to the coding standard. Priority: high Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-27uvcvideo: Add support for Syntek cameras found in JAOtech Smart TerminalsLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
2009-02-16uvcvideo: Add quirk to override wrong bandwidth value for Vimicro devicesLaurent Pinchart
From: Laurent Pinchart <laurent.pinchart@skynet.be> At least 3 Vimicro cameras (0x332d, 0x3410 and 0x3420) fail to return correct bandwidth information. The first model rounds the value provided by the host to the nearest supported packet size, while the other two always request the maximum bandwidth. Introduce a device quirk to override the value returned by the device with an estimated bandwidth computed by the driver from the frame size and frame rate, and enable it for all Vimicro cameras. Priority: normal Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
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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