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path: root/drivers/media/video/uvc/uvc_ctrl.c
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2010-02-26V4L/DVB: uvcvideo: Blacklist gain control for Asus EeePC T91 integrated webcamLaurent Pinchart
The Asus EeePC T91 integrated webcam exposes a gain control in the processing unit but stalls when the control is queried. Blacklist the gain control for that camera. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26V4L/DVB: uvcvideo: Clamp control values to the minimum and maximum valuesLaurent Pinchart
When setting a control, the V4L2 specification requires drivers to either clamp the control value to the [minimum, maximum] range or return the -ERANGE error. Fix the driver to clamp control values to the valid range in uvc_ctrl_set() and make sure the value differs from the minimum by an integer multiple of step. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26V4L/DVB: uvcvideo: Cache control min, max, res and def query resultsLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26V4L/DVB: uvcvideo: Return -ERANGE when setting a control to an out-of-range ↵Laurent Pinchart
menu index The V4L2 specification states that out of bounds control values must either be clamped to the valid range or result in a -ERANGE error code. Fix the driver to return -ERANGE instead of -EINVAL when setting a menu control to an invalid value. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26V4L/DVB: uvcvideo: Use %pUl printk format specifier to print GUIDsLaurent Pinchart
Replace the UVC_GUID_FORMAT and UVC_GUID_ARGS macros with the new %pUl printk format specifier. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-01-17V4L/DVB (13826): uvcvideo: Fix controls blacklistingLaurent Pinchart
The control blacklisting code erroneously used usb_match_id() by passing a pointer to a usb_device_id structure instead of an array of such structures. Replace the usb_match_id() call by usb_match_id_one(). Thanks to Paulo Assis for diagnosing the bug and providing an initial fix. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05V4L/DVB (13503): uvcvideo: Merge iterms, oterms and units linked listsLaurent Pinchart
All terminals and units are now added to a single linked list of entities per chain. This makes terminals and units handling code more generic. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05V4L/DVB (13148): uvcvideo: Handle V4L2_CTRL_TYPE_BUTTON control type in ↵Laurent Pinchart
VIDIOC_QUERYCTRL Return minimum, maximum and step set to 0 without querying the hardware. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-11-07V4L/DVB (13311): uvcvideo: Fix compilation warning with 2.6.32 due to type ↵Laurent Pinchart
mismatch with abs() The abs() macro has changed in 2.6.32 and returns a long instead of an int. Fix the driver to avoid compilation warnings. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-12V4L/DVB (12379): uvcvideo: Multiple streaming interfaces supportLaurent Pinchart
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. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-12V4L/DVB (12185): uvcvideo: Prefix all UVC constants with UVC_Laurent Pinchart
In preparation to moving UVC constants to a public location, prefix all constants with UVC_ to avoid namespace clashes. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16V4L/DVB (11944): uvcvideo: Add generic control blacklist.Laurent Pinchart
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. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10293): uvcvideo: replace strn{cpy,cat} with strl{cpy,cat}.Laurent Pinchart
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. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-29V4L/DVB (10197): uvcvideo: Whitespace and comments cleanup, copyright updates.Laurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-29V4L/DVB (10193): removed unused #include <version.h>'sHuang Weiyi
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>
2008-12-30V4L/DVB (9903): uvcvideo: V4L2 zoom controls supportLaurent Pinchart
Add support for absolute and continuous zoom controls (mapped to absolute and relative UVC zoom controls). Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9902): uvcvideo: V4L2 privacy control supportLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9810): uvcvideo: Add a device quirk to prune bogus controls.Laurent Pinchart
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. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (9036): uvcvideo: Fix control cache access when setting composite ↵Laurent Pinchart
auto-update controls Auto-update controls are never marked is loaded to prevent uvc_get_ctrl from loading the control value from the cache. When setting a composite (mapped to several V4L2 controls) auto-update UVC control, the driver updates the control cache value before processing each V4L2 control, overwriting the previously set V4L2 control. This fixes the problem by marking all controls as loaded in uvc_set_ctrl regardless of their type and resetting the loaded flag in uvc_commit_ctrl for auto-update controls. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (9035): uvcvideo: Declare missing camera and processing unit controls.Laurent Pinchart
This declares all missing UVC camera and processing unit controls. V4L2 mappings are not supported yet for those controls. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-04V4L/DVB (9053): fix buffer overflow in uvc-videoRalph Loader
There is a buffer overflow in drivers/media/video/uvc/uvc_ctrl.c: INFO: 0xf2c5ce08-0xf2c5ce0b. First byte 0xa1 instead of 0xcc INFO: Allocated in uvc_query_v4l2_ctrl+0x3c/0x239 [uvcvideo] age=13 cpu=1 pid=4975 ... A fixed size 8-byte buffer is allocated, and a variable size field is read into it; there is no particular bound on the size of the field (it is dependent on hardware and configuration) and it can overflow [also verified by inserting printk's.] The patch attempts to size the buffer to the correctly. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-08-06V4L/DVB (8617): uvcvideo: don't use stack-based buffers for USB transfers.Laurent Pinchart
Data buffers on the stack are not allowed for USB I/O. Use dynamically allocated buffers instead. Signed-off-by: Bruce Schmid <duck@freescale.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-26V4L/DVB (8498): uvcvideo: Return sensible min and max values when querying a ↵Laurent Pinchart
boolean control. Although the V4L2 spec states that the minimum and maximum fields may not be valid for control types other than V4L2_CTRL_TYPE_INTEGER, it makes sense to set the bounds to 0 and 1 for boolean controls instead of returning uninitialized values. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-26V4L/DVB (8497): uvcvideo: Make the auto-exposure menu control V4L2 compliantLaurent Pinchart
V4L2 and UVC enumerate the auto-exposure settings in a different order. This patch fixes the auto-exposure menu declaration to match the V4L2 spec. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20v4l-dvb: remove legacy checks to allow support for kernels < 2.6.10Hans Verkuil
Also remove some blank lines that were used to split compat code at -devel tree. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-30V4L/DVB (8145a): USB Video Class driverLaurent Pinchart
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> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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