Kirill Smelkov 949d926458 [media] uvcvideo: Add FIX_BANDWIDTH quirk to HP Webcam on HP Mini 5103 netbook ... The camera there identifies itself as being manufactured by Cheng Uei Precision Industry Co., Ltd (Foxlink), and product is titled as "HP Webcam [2 MP Fixed]". I was trying to get 2 USB video capture devices to work simultaneously, and noticed that the above mentioned webcam always requires packet size = 3072 bytes per micro frame (~= 23.4 MB/s isoc bandwidth), which is far more than enough to get standard NTSC 640x480x2x30 = ~17.6 MB/s isoc bandwidth. As there are alt interfaces with smaller MxPS T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 2 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=05c8 ProdID=0403 Rev= 1.06 S: Manufacturer=Foxlink S: Product=HP Webcam [2 MP Fixed] S: SerialNumber=200909240102 C:* #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA A: FirstIf#= 0 IfCount= 2 Cls=0e(video) Sub=03 Prot=00 I:* If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo E: Ad=83(I) Atr=03(Int.) MxPS= 16 Ivl=4ms I:* If#= 1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo I: If#= 1 Alt= 1 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo E: Ad=81(I) Atr=05(Isoc) MxPS= 128 Ivl=125us I: If#= 1 Alt= 2 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo E: Ad=81(I) Atr=05(Isoc) MxPS= 512 Ivl=125us I: If#= 1 Alt= 3 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo E: Ad=81(I) Atr=05(Isoc) MxPS=1024 Ivl=125us I: If#= 1 Alt= 4 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo E: Ad=81(I) Atr=05(Isoc) MxPS=1536 Ivl=125us I: If#= 1 Alt= 5 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo E: Ad=81(I) Atr=05(Isoc) MxPS=2048 Ivl=125us I: If#= 1 Alt= 6 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo E: Ad=81(I) Atr=05(Isoc) MxPS=2688 Ivl=125us I: If#= 1 Alt= 7 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo E: Ad=81(I) Atr=05(Isoc) MxPS=3072 Ivl=125us UVC_QUIRK_FIX_BANDWIDTH helps here and NTSC video can be served with MxPS=2688 i.e. 20.5 MB/s isoc bandwidth. In terms of microframe time allocation, before the quirk NTSC video required 60 usecs / microframe and 53 usecs / microframe after. Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>		2011-07-27 17:56:05 -03:00
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Kconfig	V4L/DVB (11439): UVC: uvc_status_cleanup(): undefined reference to `input_unregister_device'	2009-04-06 21:44:52 -03:00
Makefile	[media] uvcvideo: Register subdevices for each entity	2011-05-25 19:50:58 -03:00
uvc_ctrl.c	[media] uvcvideo: Fix control mapping for devices with multiple chains	2011-07-27 17:56:04 -03:00
uvc_driver.c	[media] uvcvideo: Add FIX_BANDWIDTH quirk to HP Webcam on HP Mini 5103 netbook	2011-07-27 17:56:05 -03:00
uvc_entity.c	[media] uvcvideo: Ignore entities for terminals with no supported format	2011-06-30 23:18:13 -03:00
uvc_isight.c	[media] uvcvideo: Update e-mail address and copyright notices	2010-10-21 01:18:18 -02:00
uvc_queue.c	[media] uvcvideo: Remove buffers from the queues when freeing	2011-06-30 23:18:52 -03:00
uvc_status.c	[media] uvcvideo: Update e-mail address and copyright notices	2010-10-21 01:18:18 -02:00
uvc_v4l2.c	[media] return -ENOTTY for unsupported ioctl's at legacy drivers	2011-07-27 17:53:38 -03:00
uvc_video.c	[media] uvcvideo: Disable the queue when failing to start	2011-06-30 23:19:16 -03:00
uvcvideo.h	[media] uvcvideo: Use LINUX_VERSION_CODE for VIDIOC_QUERYCAP	2011-07-27 17:53:15 -03:00