Question on uvcvideo driver's power management
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 uvcvideo usb device? Q2: How to tell USB uvcvideo device’s ACPI Dx state. It seems lsusb can’t tell us those info. (lspci works for PCI device’s Dx state) Q3: How to tell USB uvcvideo device’s suspension state? will any query via urb will cause resume of uvcvideo device? Q4: should USB uvcvideo device driver response to do some device-specific power action (e.g. device register writing) to put a specific USB camera into low power state when responding to suspend action? (I didn't find such device-specific power code inside uvcvideo src code) Q5: If Q4 is Yes, should device vendor respond for those device-specific code? Thanks! -- 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
Hello to Linux Media mail list
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
Question on newly build uvcvideo.ko
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 newest V4L2 build, So I follow http://www.linuxtv.org/wiki to: 1: get the src code v4l-dvb-9652f85e688a.tar.gz 2: make and make install on my netbook. 3: reboot system lsmod shows me uvcvideo module has been loaded, while gstreamer-properties can't find CNF7129 device, so I can't use this USB 2.0 web camera now. I also tried re-install original workable Linux, and make v4l again. Then copy the newly build uvcvideo.ko to /lib/modules/2.6.33.xx/kernel/drivers/media/video/uvc/ module still can be found from lsmod, while gstreamer-properties still can't find CNF7129 device. Does it mean I must do some code modification for 04f2:b071 device before I build v4l driver? Thanks! Samuel -Here is lsusb -v information of my webcam-- Bus 001 Device 004: ID 04f2:b071 Chicony Electronics Co., Ltd 2.0M UVC WebCam / CNF7129 Device Descriptor: bLength18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 ? bDeviceProtocol 1 Interface Association bMaxPacketSize064 idVendor 0x04f2 Chicony Electronics Co., Ltd idProduct 0xb071 2.0M UVC WebCam / CNF7129 bcdDevice 15.44 iManufacturer 2 Chicony Electronics Co., Ltd. iProduct1 CNF7129 iSerial 3 SN0001 ... -- 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
Re: Question on newly build uvcvideo.ko
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, I never have chance to make uvcvideo module used bit to 1 :( [r...@user-desktop uvc]# lsmod Module Size Used by uvcvideo 46182 0 rt2860sta 406917 1 battery 7968 0 After 2 questions, there is dmesg from uvcvideo after my manually insmod, any idea? Another question is: If newest v4l code tree has been advanced much than src tree inside 2.6.33 kernel, which v4l src label is nearest from src tree inside 2.6.33 kernel? 3rdd question is: if I want to build v4l driver from src inside 2.6.33 kernel directly. How should I do? (I tried to make menuconfig and make modules from a clean kernel, while insmod the newly build uvcvideo.ko reports: insmod: error inserting './uvcvideo.ko': -1 Invalid module format [ 78.446109] uvcvideo: Found UVC 1.00 device CNF7129 (04f2:b071) [ 78.462540] [ cut here ] [ 78.462569] WARNING: at drivers/media/video/v4l2-dev.c:420 __video_register_device+0x44/0x3d7() [ 78.462581] Hardware name: 1000H [ 78.462588] Modules linked in: uvcvideo(+) rt2860sta(C) battery [ 78.462616] Pid: 690, comm: insmod Tainted: G C 2.6.33.3-11.1-netbook #1 [ 78.462626] Call Trace: [ 78.462647] [c1030944] warn_slowpath_common+0x66/0x7d [ 78.462665] [c12f89ad] ? __video_register_device+0x44/0x3d7 [ 78.462682] [c1030968] warn_slowpath_null+0xd/0x10 [ 78.462697] [c12f89ad] __video_register_device+0x44/0x3d7 [ 78.462714] [c12f8d56] video_register_device+0xa/0xc [ 78.462744] [f82e50fc] uvc_probe+0x9c0/0xb26 [uvcvideo] [ 78.462763] [c12c1e35] usb_probe_interface+0xe1/0x136 [ 78.462782] [c11fff7b] driver_probe_device+0x87/0x107 [ 78.462799] [c120003e] __driver_attach+0x43/0x5f [ 78.462815] [c11ff907] bus_for_each_dev+0x3e/0x69 [ 78.462831] [c11ffe46] driver_attach+0x14/0x16 [ 78.462846] [c11b] ? __driver_attach+0x0/0x5f [ 78.462862] [c11ff3aa] bus_add_driver+0x105/0x235 [ 78.462879] [c1200280] driver_register+0x7a/0xe1 [ 78.462894] [c12c1bf6] usb_register_driver+0x67/0x104 [ 78.462919] [f82c2000] ? uvc_init+0x0/0x71 [uvcvideo] [ 78.462942] [f82c2059] uvc_init+0x59/0x71 [uvcvideo] [ 78.462958] [c100113a] do_one_initcall+0x4d/0x132 [ 78.462977] [c105a1b6] sys_init_module+0xa7/0x1db [ 78.462992] [c10027d0] sysenter_do_call+0x12/0x26 [ 78.463051] ---[ end trace a67861dcf94e1e3a ]--- [ 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 laurent.pinch...@ideasonboard.com: Hi Samuel, On Friday 25 June 2010 11:25:13 Samuel Xu wrote: 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 newest V4L2 build, So I follow http://www.linuxtv.org/wiki to: 1: get the src code v4l-dvb-9652f85e688a.tar.gz 2: make and make install on my netbook. 3: reboot system lsmod shows me uvcvideo module has been loaded, while gstreamer-properties can't find CNF7129 device, so I can't use this USB 2.0 web camera now. Can you look at the kernel log (dmesg) and report messages printed by the uvcvideo driver ? I also tried re-install original workable Linux, and make v4l again. Then copy the newly build uvcvideo.ko to /lib/modules/2.6.33.xx/kernel/drivers/media/video/uvc/ module still can be found from lsmod, while gstreamer-properties still can't find CNF7129 device. That's to be expected, as the new v4l-dvb build you installed replaced the core v4l modules (such as videodev.ko), and the new version isn't compatible with the uvcvideo driver that came with your kernel. Does it mean I must do some code modification for 04f2:b071 device before I build v4l driver? In theory, no. -- Regards, Laurent Pinchart -- 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
Re: Question on newly build uvcvideo.ko
Hi, Pinchart: Appreciate your possible comments on those dmesg info. Samuel 2010/6/25 Samuel Xu samuel.xu.t...@gmail.com: 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, I never have chance to make uvcvideo module used bit to 1 :( [r...@user-desktop uvc]# lsmod Module Size Used by uvcvideo 46182 0 rt2860sta 406917 1 battery 7968 0 After 2 questions, there is dmesg from uvcvideo after my manually insmod, any idea? Another question is: If newest v4l code tree has been advanced much than src tree inside 2.6.33 kernel, which v4l src label is nearest from src tree inside 2.6.33 kernel? 3rdd question is: if I want to build v4l driver from src inside 2.6.33 kernel directly. How should I do? (I tried to make menuconfig and make modules from a clean kernel, while insmod the newly build uvcvideo.ko reports: insmod: error inserting './uvcvideo.ko': -1 Invalid module format [ 78.446109] uvcvideo: Found UVC 1.00 device CNF7129 (04f2:b071) [ 78.462540] [ cut here ] [ 78.462569] WARNING: at drivers/media/video/v4l2-dev.c:420 __video_register_device+0x44/0x3d7() [ 78.462581] Hardware name: 1000H [ 78.462588] Modules linked in: uvcvideo(+) rt2860sta(C) battery [ 78.462616] Pid: 690, comm: insmod Tainted: G C 2.6.33.3-11.1-netbook #1 [ 78.462626] Call Trace: [ 78.462647] [c1030944] warn_slowpath_common+0x66/0x7d [ 78.462665] [c12f89ad] ? __video_register_device+0x44/0x3d7 [ 78.462682] [c1030968] warn_slowpath_null+0xd/0x10 [ 78.462697] [c12f89ad] __video_register_device+0x44/0x3d7 [ 78.462714] [c12f8d56] video_register_device+0xa/0xc [ 78.462744] [f82e50fc] uvc_probe+0x9c0/0xb26 [uvcvideo] [ 78.462763] [c12c1e35] usb_probe_interface+0xe1/0x136 [ 78.462782] [c11fff7b] driver_probe_device+0x87/0x107 [ 78.462799] [c120003e] __driver_attach+0x43/0x5f [ 78.462815] [c11ff907] bus_for_each_dev+0x3e/0x69 [ 78.462831] [c11ffe46] driver_attach+0x14/0x16 [ 78.462846] [c11b] ? __driver_attach+0x0/0x5f [ 78.462862] [c11ff3aa] bus_add_driver+0x105/0x235 [ 78.462879] [c1200280] driver_register+0x7a/0xe1 [ 78.462894] [c12c1bf6] usb_register_driver+0x67/0x104 [ 78.462919] [f82c2000] ? uvc_init+0x0/0x71 [uvcvideo] [ 78.462942] [f82c2059] uvc_init+0x59/0x71 [uvcvideo] [ 78.462958] [c100113a] do_one_initcall+0x4d/0x132 [ 78.462977] [c105a1b6] sys_init_module+0xa7/0x1db [ 78.462992] [c10027d0] sysenter_do_call+0x12/0x26 [ 78.463051] ---[ end trace a67861dcf94e1e3a ]--- [ 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 laurent.pinch...@ideasonboard.com: Hi Samuel, On Friday 25 June 2010 11:25:13 Samuel Xu wrote: 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 newest V4L2 build, So I follow http://www.linuxtv.org/wiki to: 1: get the src code v4l-dvb-9652f85e688a.tar.gz 2: make and make install on my netbook. 3: reboot system lsmod shows me uvcvideo module has been loaded, while gstreamer-properties can't find CNF7129 device, so I can't use this USB 2.0 web camera now. Can you look at the kernel log (dmesg) and report messages printed by the uvcvideo driver ? I also tried re-install original workable Linux, and make v4l again. Then copy the newly build uvcvideo.ko to /lib/modules/2.6.33.xx/kernel/drivers/media/video/uvc/ module still can be found from lsmod, while gstreamer-properties still can't find CNF7129 device. That's to be expected, as the new v4l-dvb build you installed replaced the core v4l modules (such as videodev.ko), and the new version isn't compatible with the uvcvideo driver that came with your kernel. Does it mean I must do some code modification for 04f2:b071 device before I build v4l driver? In theory, no. -- Regards, Laurent Pinchart -- 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
