Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761465AbZATLtx (ORCPT ); Tue, 20 Jan 2009 06:49:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759202AbZATLtm (ORCPT ); Tue, 20 Jan 2009 06:49:42 -0500 Received: from mail.bitdefender.com ([91.199.104.2]:54796 "EHLO mail.bitdefender.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759130AbZATLtk (ORCPT ); Tue, 20 Jan 2009 06:49:40 -0500 From: Ionut Leonte To: linux-kernel@vger.kernel.org Subject: 2.6.28 changes in-kernel name for UVC device ? Date: Tue, 20 Jan 2009 13:49:33 +0200 User-Agent: KMail/1.9.9 MIME-Version: 1.0 Content-Type: Multipart/Mixed; boundary="Boundary-00=_NpbdJo5nRWdYG9V" Message-Id: <200901201349.33707.ionut.leonte@gmail.com> X-BitDefender-Scanner: Clean, Agent: BitDefender qmail 3.0.0 on mail.bitdefender.com, sigver: 7.23257 X-BitDefender-Spam: No (241) X-BitDefender-SpamStamp: v1, build 2.7.20.59387, bayes score: 500(0), pbayes score: 241(241), neunet score: 500(0), total: 241 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 20710 Lines: 497 --Boundary-00=_NpbdJo5nRWdYG9V Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline I have a Dell laptop with an integrated webcam which works with the 'uvcvideo' module. For kernel versions 2.6.27 and below the following udev rule: KERNEL=="video[0-9]*", NAME="v4l/video%n", SYMLINK+="%k", GROUP="video" would create '/dev/video0' as a link to '/dev/v4l/video0'. When switching to 2.6.28 the rule creates '/dev/video1394-0' instead. Obviously most user-space apps were quite surprised by this (as was I). Is this change intended or is it the accidental result of some modification ? (attached 'lsusb' information for the device) --Boundary-00=_NpbdJo5nRWdYG9V Content-Type: text/plain; charset="utf-8"; name="lsusb_webcam" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="lsusb_webcam" Bus 002 Device 003: ID 05a9:2640 OmniVision Technologies, Inc. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 ? bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 idVendor 0x05a9 OmniVision Technologies, Inc. idProduct 0x2640 bcdDevice 1.00 iManufacturer 1 OmniVision Technologies, Inc. -2640-07.07.20.3 iProduct 2 Laptop Integrated Webcam iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 705 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 2 bFunctionClass 14 Video bFunctionSubClass 3 Video Interface Collection bFunctionProtocol 0 iFunction 2 Laptop Integrated Webcam Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 1 Video Control bInterfaceProtocol 0 iInterface 2 Laptop Integrated Webcam VideoControl Interface Descriptor: bLength 13 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdUVC 1.00 wTotalLength 109 dwClockFrequency 30.000000MHz bInCollection 1 baInterfaceNr( 0) 1 VideoControl Interface Descriptor: bLength 17 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0201 Camera Sensor bAssocTerminal 0 iTerminal 0 wObjectiveFocalLengthMin 0 wObjectiveFocalLengthMax 0 wOcularFocalLength 0 bControlSize 2 bmControls 0x00000a00 Zoom (Absolute) PanTilt (Absolute) VideoControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 5 iTerminal 0 VideoControl Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 4 (SELECTOR_UNIT) bUnitID 4 bNrInPins 1 baSource( 0) 1 iSelector 0 VideoControl Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 5 (PROCESSING_UNIT) Warning: Descriptor too short bUnitID 5 bSourceID 4 wMaxMultiplier 0 bControlSize 2 bmControls 0x0000557f Brightness Contrast Hue Saturation Sharpness Gamma White Balance Temperature Backlight Compensation Power Line Frequency White Balance Temperature, Auto Digital Multiplier iProcessing 0 bmVideoStandards 0x1a NTSC - 525/60 SECAM - 625/50 NTSC - 625/50 VideoControl Interface Descriptor: bLength 26 bDescriptorType 36 bDescriptorSubtype 6 (EXTENSION_UNIT) bUnitID 7 guidExtensionCode {8a0f88dd-ba1c-5449-8a25-f7875967f0f7} bNumControl 1 bNrPins 1 baSourceID( 0) 1 bControlSize 1 bmControls( 0) 0x01 iExtension 0 VideoControl Interface Descriptor: bLength 26 bDescriptorType 36 bDescriptorSubtype 6 (EXTENSION_UNIT) bUnitID 6 guidExtensionCode {08f74a8e-ab51-2546-a2a2-31aab38e59da} bNumControl 1 bNrPins 1 baSourceID( 0) 5 bControlSize 1 bmControls( 0) 0x01 iExtension 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 16 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 VideoStreaming Interface Descriptor: bLength 15 bDescriptorType 36 bDescriptorSubtype 1 (INPUT_HEADER) bNumFormats 2 wTotalLength 485 bEndPointAddress 129 bmInfo 0 bTerminalLink 3 bStillCaptureMethod 0 bTriggerSupport 0 bTriggerUsage 0 bControlSize 1 bmaControls( 0) 11 bmaControls( 1) 11 VideoStreaming Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 6 (FORMAT_MJPEG) bFormatIndex 1 bNumFrameDescriptors 9 bFlags 1 Fixed-size samples: Yes bDefaultFrameIndex 1 bAspectRatioX 0 bAspectRatioY 0 bmInterlaceFlags 0x00 Interlaced stream or variable: No Fields per frame: 1 fields Field 1 first: No Field pattern: Field 1 only bCopyProtect 0 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 1 bmCapabilities 0x00 Still image unsupported wWidth 640 wHeight 480 dwMinBitRate 147456000 dwMaxBitRate 147456000 dwMaxVideoFrameBufferSize 614400 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 2 bmCapabilities 0x00 Still image unsupported wWidth 160 wHeight 120 dwMinBitRate 9216000 dwMaxBitRate 9216000 dwMaxVideoFrameBufferSize 38400 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 3 bmCapabilities 0x00 Still image unsupported wWidth 176 wHeight 144 dwMinBitRate 12165120 dwMaxBitRate 12165120 dwMaxVideoFrameBufferSize 50688 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 4 bmCapabilities 0x00 Still image unsupported wWidth 320 wHeight 240 dwMinBitRate 36864000 dwMaxBitRate 36864000 dwMaxVideoFrameBufferSize 153600 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 5 bmCapabilities 0x00 Still image unsupported wWidth 352 wHeight 288 dwMinBitRate 48660480 dwMaxBitRate 48660480 dwMaxVideoFrameBufferSize 202752 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 6 bmCapabilities 0x00 Still image unsupported wWidth 800 wHeight 600 dwMinBitRate 230400000 dwMaxBitRate 230400000 dwMaxVideoFrameBufferSize 960000 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 7 bmCapabilities 0x00 Still image unsupported wWidth 1024 wHeight 768 dwMinBitRate 94371840 dwMaxBitRate 94371840 dwMaxVideoFrameBufferSize 1572864 dwDefaultFrameInterval 1000000 bFrameIntervalType 1 dwFrameInterval( 0) 1000000 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 8 bmCapabilities 0x00 Still image unsupported wWidth 1280 wHeight 1024 dwMinBitRate 157286400 dwMaxBitRate 157286400 dwMaxVideoFrameBufferSize 2621440 dwDefaultFrameInterval 1000000 bFrameIntervalType 1 dwFrameInterval( 0) 1000000 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 9 bmCapabilities 0x00 Still image unsupported wWidth 1600 wHeight 1200 dwMinBitRate 230400000 dwMaxBitRate 230400000 dwMaxVideoFrameBufferSize 3840000 dwDefaultFrameInterval 1000000 bFrameIntervalType 1 dwFrameInterval( 0) 1000000 VideoStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 13 (COLORFORMAT) bColorPrimaries 1 (BT.709,sRGB) bTransferCharacteristics 1 (BT.709) bMatrixCoefficients 4 (SMPTE 170M (BT.601)) VideoStreaming Interface Descriptor: bLength 27 bDescriptorType 36 bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED) bFormatIndex 2 bNumFrameDescriptors 5 guidFormat {59555932-0000-1000-8000-00aa00389b71} bBitsPerPixel 16 bDefaultFrameIndex 1 bAspectRatioX 0 bAspectRatioY 0 bmInterlaceFlags 0x00 Interlaced stream or variable: No Fields per frame: 1 fields Field 1 first: No Field pattern: Field 1 only bCopyProtect 0 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 5 (FRAME_UNCOMPRESSED) bFrameIndex 1 bmCapabilities 0x00 Still image unsupported wWidth 640 wHeight 480 dwMinBitRate 147456000 dwMaxBitRate 147456000 dwMaxVideoFrameBufferSize 614400 dwDefaultFrameInterval 1000000 bFrameIntervalType 1 dwFrameInterval( 0) 1000000 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 5 (FRAME_UNCOMPRESSED) bFrameIndex 2 bmCapabilities 0x00 Still image unsupported wWidth 160 wHeight 120 dwMinBitRate 9216000 dwMaxBitRate 9216000 dwMaxVideoFrameBufferSize 38400 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 5 (FRAME_UNCOMPRESSED) bFrameIndex 3 bmCapabilities 0x00 Still image unsupported wWidth 176 wHeight 144 dwMinBitRate 12165120 dwMaxBitRate 12165120 dwMaxVideoFrameBufferSize 50688 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 5 (FRAME_UNCOMPRESSED) bFrameIndex 4 bmCapabilities 0x00 Still image unsupported wWidth 320 wHeight 240 dwMinBitRate 36864000 dwMaxBitRate 36864000 dwMaxVideoFrameBufferSize 153600 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 30 bDescriptorType 36 bDescriptorSubtype 5 (FRAME_UNCOMPRESSED) bFrameIndex 5 bmCapabilities 0x00 Still image unsupported wWidth 352 wHeight 288 dwMinBitRate 48660480 dwMaxBitRate 48660480 dwMaxVideoFrameBufferSize 202752 dwDefaultFrameInterval 333333 bFrameIntervalType 1 dwFrameInterval( 0) 333333 VideoStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 13 (COLORFORMAT) bColorPrimaries 1 (BT.709,sRGB) bTransferCharacteristics 1 (BT.709) bMatrixCoefficients 4 (SMPTE 170M (BT.601)) Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x03fc 1x 1020 bytes bInterval 1 ** UNRECOGNIZED: 30 ff 42 49 53 54 00 01 08 01 10 00 00 00 00 00 d1 03 f4 01 d2 04 f4 01 d3 05 f4 01 d4 06 f4 01 d5 07 f4 01 d6 08 f4 01 d7 09 f4 01 d8 0a f4 01 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 ? bDeviceProtocol 1 Interface Association bMaxPacketSize0 8 bNumConfigurations 1 Device Status: 0x0000 (Bus Powered) --Boundary-00=_NpbdJo5nRWdYG9V-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/