Question on uvcvideo driver's power management

2010-06-29 Thread Samuel Xu
Question on uvcvideo driver's power management: Q1: We found some USB material mentioned : Relationship between ACPI Dx states and USB PM states (active/suspended) is orthogonal. Suspend/resume might not effect device Dx state(e.g. D0/D1/D3). Is it a correct statement for general usb device and uvc

Question on power management of usb web camera

2010-06-25 Thread Samuel Xu
Hi, I am very curious about how v4l driver controls USB web camera's power, e.g will it force device to a D3 low power state. Could anyone show me which part of code is related with power management and is there any wiki guide on V4l's power? Thanks! Samuel -- To unsubscribe from this list: send

Re: Question on newly build uvcvideo.ko

2010-06-25 Thread Samuel Xu
Hi, Pinchart: Appreciate your possible comments on those dmesg info. Samuel 2010/6/25 Samuel Xu : > One correction: After make and make install, uvcvideo module can't > auto loaded any more. I must manually "insmod uvcvideo.ko" to load it. > > Here is lsmod result,

Re: Question on newly build uvcvideo.ko

2010-06-25 Thread Samuel Xu
4e1e3a ]--- [ 78.463064] uvcvideo: Failed to register video device (-22). [ 78.463758] usbcore: registered new interface driver uvcvideo [ 78.463774] USB Video Class driver (v0.1.0) 2010/6/25 Laurent Pinchart : > Hi Samuel, > > On Friday 25 June 2010 11:25:13 Samuel Xu wrote: >>

Question on newly build uvcvideo.ko

2010-06-25 Thread Samuel Xu
HI: I am using a ASUS netbook with a USB 2.0 web camera (04f2:b071 Chicony Electronics Co., Ltd 2.0M UVC WebCam / CNF7129) I installed Linux, and the default uvcvideo.ko works (I tried gstreamer-properties, which can find CNF7129 device and show correct video camera test). While I want to try the n

Hello to Linux Media mail list

2010-06-25 Thread Samuel Xu
It is my first post to linux-media, sorry for NULL msg. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html