diff options
Diffstat (limited to 'drivers/media/video/uvc/uvc_driver.c')
| -rw-r--r-- | drivers/media/video/uvc/uvc_driver.c | 2472 |
1 files changed, 0 insertions, 2472 deletions
diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c deleted file mode 100644 index 45d7aa162d9d..000000000000 --- a/drivers/media/video/uvc/uvc_driver.c +++ /dev/null @@ -1,2472 +0,0 @@ -/* - * uvc_driver.c -- USB Video Class driver - * - * Copyright (C) 2005-2010 - * Laurent Pinchart (laurent.pinchart@ideasonboard.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - */ - -/* - * This driver aims to support video input and ouput devices compliant with the - * 'USB Video Class' specification. - * - * The driver doesn't support the deprecated v4l1 interface. It implements the - * mmap capture method only, and doesn't do any image format conversion in - * software. If your user-space application doesn't support YUYV or MJPEG, fix - * it :-). Please note that the MJPEG data have been stripped from their - * Huffman tables (DHT marker), you will need to add it back if your JPEG - * codec can't handle MJPEG data. - */ - -#include <linux/atomic.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/usb.h> -#include <linux/videodev2.h> -#include <linux/vmalloc.h> -#include <linux/wait.h> -#include <linux/version.h> -#include <asm/unaligned.h> - -#include <media/v4l2-common.h> - -#include "uvcvideo.h" - -#define DRIVER_AUTHOR "Laurent Pinchart " \ - "<laurent.pinchart@ideasonboard.com>" -#define DRIVER_DESC "USB Video Class driver" - -unsigned int uvc_clock_param = CLOCK_MONOTONIC; -unsigned int uvc_no_drop_param; -static unsigned int uvc_quirks_param = -1; -unsigned int uvc_trace_param; -unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; - -/* ------------------------------------------------------------------------ - * Video formats - */ - -static struct uvc_format_desc uvc_fmts[] = { - { - .name = "YUV 4:2:2 (YUYV)", - .guid = UVC_GUID_FORMAT_YUY2, - .fcc = V4L2_PIX_FMT_YUYV, - }, - { - .name = "YUV 4:2:2 (YUYV)", - .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, - .fcc = V4L2_PIX_FMT_YUYV, - }, - { - .name = "YUV 4:2:0 (NV12)", - .guid = UVC_GUID_FORMAT_NV12, - .fcc = V4L2_PIX_FMT_NV12, - }, - { - .name = "MJPEG", - .guid = UVC_GUID_FORMAT_MJPEG, - .fcc = V4L2_PIX_FMT_MJPEG, - }, - { - .name = "YVU 4:2:0 (YV12)", - .guid = UVC_GUID_FORMAT_YV12, - .fcc = V4L2_PIX_FMT_YVU420, - }, - { - .name = "YUV 4:2:0 (I420)", - .guid = UVC_GUID_FORMAT_I420, - .fcc = V4L2_PIX_FMT_YUV420, - }, - { - .name = "YUV 4:2:0 (M420)", - .guid = UVC_GUID_FORMAT_M420, - .fcc = V4L2_PIX_FMT_M420, - }, - { - .name = "YUV 4:2:2 (UYVY)", - .guid = UVC_GUID_FORMAT_UYVY, - .fcc = V4L2_PIX_FMT_UYVY, - }, - { - .name = "Greyscale 8-bit (Y800)", - .guid = UVC_GUID_FORMAT_Y800, - .fcc = V4L2_PIX_FMT_GREY, - }, - { - .name = "Greyscale 8-bit (Y8 )", - .guid = UVC_GUID_FORMAT_Y8, - .fcc = V4L2_PIX_FMT_GREY, - }, - { - .name = "Greyscale 10-bit (Y10 )", - .guid = UVC_GUID_FORMAT_Y10, - .fcc = V4L2_PIX_FMT_Y10, - }, - { - .name = "Greyscale 12-bit (Y12 )", - .guid = UVC_GUID_FORMAT_Y12, - .fcc = V4L2_PIX_FMT_Y12, - }, - { - .name = "Greyscale 16-bit (Y16 )", - .guid = UVC_GUID_FORMAT_Y16, - .fcc = V4L2_PIX_FMT_Y16, - }, - { - .name = "RGB Bayer", - .guid = UVC_GUID_FORMAT_BY8, - .fcc = V4L2_PIX_FMT_SBGGR8, - }, - { - .name = "RGB565", - .guid = UVC_GUID_FORMAT_RGBP, - .fcc = V4L2_PIX_FMT_RGB565, - }, - { - .name = "H.264", - .guid = UVC_GUID_FORMAT_H264, - .fcc = V4L2_PIX_FMT_H264, - }, -}; - -/* ------------------------------------------------------------------------ - * Utility functions - */ - -struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, - __u8 epaddr) -{ - struct usb_host_endpoint *ep; - unsigned int i; - - for (i = 0; i < alts->desc.bNumEndpoints; ++i) { - ep = &alts->endpoint[i]; - if (ep->desc.bEndpointAddress == epaddr) - return ep; - } - - return NULL; -} - -static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) -{ - unsigned int len = ARRAY_SIZE(uvc_fmts); - unsigned int i; - - for (i = 0; i < len; ++i) { - if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) - return &uvc_fmts[i]; - } - - return NULL; -} - -static __u32 uvc_colorspace(const __u8 primaries) -{ - static const __u8 colorprimaries[] = { - 0, - V4L2_COLORSPACE_SRGB, - V4L2_COLORSPACE_470_SYSTEM_M, - V4L2_COLORSPACE_470_SYSTEM_BG, - V4L2_COLORSPACE_SMPTE170M, - V4L2_COLORSPACE_SMPTE240M, - }; - - if (primaries < ARRAY_SIZE(colorprimaries)) - return colorprimaries[primaries]; - - return 0; -} - -/* Simplify a fraction using a simple continued fraction decomposition. The - * idea here is to convert fractions such as 333333/10000000 to 1/30 using - * 32 bit arithmetic only. The algorithm is not perfect and relies upon two - * arbitrary parameters to remove non-significative terms from the simple - * continued fraction decomposition. Using 8 and 333 for n_terms and threshold - * respectively seems to give nice results. - */ -void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, - unsigned int n_terms, unsigned int threshold) -{ - uint32_t *an; - uint32_t x, y, r; - unsigned int i, n; - - an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); - if (an == NULL) - return; - - /* Convert the fraction to a simple continued fraction. See - * http://mathforum.org/dr.math/faq/faq.fractions.html - * Stop if the current term is bigger than or equal to the given - * threshold. - */ - x = *numerator; - y = *denominator; - - for (n = 0; n < n_terms && y != 0; ++n) { - an[n] = x / y; - if (an[n] >= threshold) { - if (n < 2) - n++; - break; - } - - r = x - an[n] * y; - x = y; - y = r; - } - - /* Expand the simple continued fraction back to an integer fraction. */ - x = 0; - y = 1; - - for (i = n; i > 0; --i) { - r = y; - y = an[i-1] * y + x; - x = r; - } - - *numerator = y; - *denominator = x; - kfree(an); -} - -/* Convert a fraction to a frame interval in 100ns multiples. The idea here is - * to compute numerator / denominator * 10000000 using 32 bit fixed point - * arithmetic only. - */ -uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) -{ - uint32_t multiplier; - - /* Saturate the result if the operation would overflow. */ - if (denominator == 0 || - numerator/denominator >= ((uint32_t)-1)/10000000) - return (uint32_t)-1; - - /* Divide both the denominator and the multiplier by two until - * numerator * multiplier doesn't overflow. If anyone knows a better - * algorithm please let me know. - */ - multiplier = 10000000; - while (numerator > ((uint32_t)-1)/multiplier) { - multiplier /= 2; - denominator /= 2; - } - - return denominator ? numerator * multiplier / denominator : 0; -} - -/* ------------------------------------------------------------------------ - * Terminal and unit management - */ - -struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) -{ - struct uvc_entity *entity; - - list_for_each_entry(entity, &dev->entities, list) { - if (entity->id == id) - return entity; - } - - return NULL; -} - -static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, - int id, struct uvc_entity *entity) -{ - unsigned int i; - - if (entity == NULL) - entity = list_entry(&dev->entities, struct uvc_entity, list); - - list_for_each_entry_continue(entity, &dev->entities, list) { - for (i = 0; i < entity->bNrInPins; ++i) - if (entity->baSourceID[i] == id) - return entity; - } - - return NULL; -} - -static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) -{ - struct uvc_streaming *stream; - - list_for_each_entry(stream, &dev->streams, list) { - if (stream->header.bTerminalLink == id) - return stream; - } - - return NULL; -} - -/* ------------------------------------------------------------------------ - * Descriptors parsing - */ - -static int uvc_parse_format(struct uvc_device *dev, - struct uvc_streaming *streaming, struct uvc_format *format, - __u32 **intervals, unsigned char *buffer, int buflen) -{ - struct usb_interface *intf = streaming->intf; - struct usb_host_interface *alts = intf->cur_altsetting; - struct uvc_format_desc *fmtdesc; - struct uvc_frame *frame; - const unsigned char *start = buffer; - unsigned int interval; - unsigned int i, n; - __u8 ftype; - - format->type = buffer[2]; - format->index = buffer[3]; - - switch (buffer[2]) { - case UVC_VS_FORMAT_UNCOMPRESSED: - case UVC_VS_FORMAT_FRAME_BASED: - n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; - if (buflen < n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d FORMAT error\n", - dev->udev->devnum, - alts->desc.bInterfaceNumber); - return -EINVAL; - } - - /* Find the format descriptor from its GUID. */ - fmtdesc = uvc_format_by_guid(&buffer[5]); - - if (fmtdesc != NULL) { - strlcpy(format->name, fmtdesc->name, - sizeof format->name); - format->fcc = fmtdesc->fcc; - } else { - uvc_printk(KERN_INFO, "Unknown video format %pUl\n", - &buffer[5]); - snprintf(format->name, sizeof(format->name), "%pUl\n", - &buffer[5]); - format->fcc = 0; - } - - format->bpp = buffer[21]; - if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { - ftype = UVC_VS_FRAME_UNCOMPRESSED; - } else { - ftype = UVC_VS_FRAME_FRAME_BASED; - if (buffer[27]) - format->flags = UVC_FMT_FLAG_COMPRESSED; - } - break; - - case UVC_VS_FORMAT_MJPEG: - if (buflen < 11) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d FORMAT error\n", - dev->udev->devnum, - alts->desc.bInterfaceNumber); - return -EINVAL; - } - - strlcpy(format->name, "MJPEG", sizeof format->name); - format->fcc = V4L2_PIX_FMT_MJPEG; - format->flags = UVC_FMT_FLAG_COMPRESSED; - format->bpp = 0; - ftype = UVC_VS_FRAME_MJPEG; - break; - - case UVC_VS_FORMAT_DV: - if (buflen < 9) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d FORMAT error\n", - dev->udev->devnum, - alts->desc.bInterfaceNumber); - return -EINVAL; - } - - switch (buffer[8] & 0x7f) { - case 0: - strlcpy(format->name, "SD-DV", sizeof format->name); - break; - case 1: - strlcpy(format->name, "SDL-DV", sizeof format->name); - break; - case 2: - strlcpy(format->name, "HD-DV", sizeof format->name); - break; - default: - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d: unknown DV format %u\n", - dev->udev->devnum, - alts->desc.bInterfaceNumber, buffer[8]); - return -EINVAL; - } - - strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", - sizeof format->name); - - format->fcc = V4L2_PIX_FMT_DV; - format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; - format->bpp = 0; - ftype = 0; - - /* Create a dummy frame descriptor. */ - frame = &format->frame[0]; - memset(&format->frame[0], 0, sizeof format->frame[0]); - frame->bFrameIntervalType = 1; - frame->dwDefaultFrameInterval = 1; - frame->dwFrameInterval = *intervals; - *(*intervals)++ = 1; - format->nframes = 1; - break; - - case UVC_VS_FORMAT_MPEG2TS: - case UVC_VS_FORMAT_STREAM_BASED: - /* Not supported yet. */ - default: - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d unsupported format %u\n", - dev->udev->devnum, alts->desc.bInterfaceNumber, - buffer[2]); - return -EINVAL; - } - - uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); - - buflen -= buffer[0]; - buffer += buffer[0]; - - /* Parse the frame descriptors. Only uncompressed, MJPEG and frame - * based formats have frame descriptors. - */ - while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && - buffer[2] == ftype) { - frame = &format->frame[format->nframes]; - if (ftype != UVC_VS_FRAME_FRAME_BASED) - n = buflen > 25 ? buffer[25] : 0; - else - n = buflen > 21 ? buffer[21] : 0; - - n = n ? n : 3; - - if (buflen < 26 + 4*n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d FRAME error\n", dev->udev->devnum, - alts->desc.bInterfaceNumber); - return -EINVAL; - } - - frame->bFrameIndex = buffer[3]; - frame->bmCapabilities = buffer[4]; - frame->wWidth = get_unaligned_le16(&buffer[5]); - frame->wHeight = get_unaligned_le16(&buffer[7]); - frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); - frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); - if (ftype != UVC_VS_FRAME_FRAME_BASED) { - frame->dwMaxVideoFrameBufferSize = - get_unaligned_le32(&buffer[17]); - frame->dwDefaultFrameInterval = - get_unaligned_le32(&buffer[21]); - frame->bFrameIntervalType = buffer[25]; - } else { - frame->dwMaxVideoFrameBufferSize = 0; - frame->dwDefaultFrameInterval = - get_unaligned_le32(&buffer[17]); - frame->bFrameIntervalType = buffer[21]; - } - frame->dwFrameInterval = *intervals; - - /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize - * completely. Observed behaviours range from setting the - * value to 1.1x the actual frame size to hardwiring the - * 16 low bits to 0. This results in a higher than necessary - * memory usage as well as a wrong image size information. For - * uncompressed formats this can be fixed by computing the - * value from the frame size. - */ - if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) - frame->dwMaxVideoFrameBufferSize = format->bpp - * frame->wWidth * frame->wHeight / 8; - - /* Some bogus devices report dwMinFrameInterval equal to - * dwMaxFrameInterval and have dwFrameIntervalStep set to - * zero. Setting all null intervals to 1 fixes the problem and - * some other divisions by zero that could happen. - */ - for (i = 0; i < n; ++i) { - interval = get_unaligned_le32(&buffer[26+4*i]); - *(*intervals)++ = interval ? interval : 1; - } - - /* Make sure that the default frame interval stays between - * the boundaries. - */ - n -= frame->bFrameIntervalType ? 1 : 2; - frame->dwDefaultFrameInterval = - min(frame->dwFrameInterval[n], - max(frame->dwFrameInterval[0], - frame->dwDefaultFrameInterval)); - - if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { - frame->bFrameIntervalType = 1; - frame->dwFrameInterval[0] = - frame->dwDefaultFrameInterval; - } - - uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", - frame->wWidth, frame->wHeight, - 10000000/frame->dwDefaultFrameInterval, - (100000000/frame->dwDefaultFrameInterval)%10); - - format->nframes++; - buflen -= buffer[0]; - buffer += buffer[0]; - } - - if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && - buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { - buflen -= buffer[0]; - buffer += buffer[0]; - } - - if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && - buffer[2] == UVC_VS_COLORFORMAT) { - if (buflen < 6) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d COLORFORMAT error\n", - dev->udev->devnum, - alts->desc.bInterfaceNumber); - return -EINVAL; - } - - format->colorspace = uvc_colorspace(buffer[3]); - - buflen -= buffer[0]; - buffer += buffer[0]; - } - - return buffer - start; -} - -static int uvc_parse_streaming(struct uvc_device *dev, - struct usb_interface *intf) -{ - struct uvc_streaming *streaming = NULL; - struct uvc_format *format; - struct uvc_frame *frame; - struct usb_host_interface *alts = &intf->altsetting[0]; - unsigned char *_buffer, *buffer = alts->extra; - int _buflen, buflen = alts->extralen; - unsigned int nformats = 0, nframes = 0, nintervals = 0; - unsigned int size, i, n, p; - __u32 *interval; - __u16 psize; - int ret = -EINVAL; - - if (intf->cur_altsetting->desc.bInterfaceSubClass - != UVC_SC_VIDEOSTREAMING) { - uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " - "video streaming interface\n", dev->udev->devnum, - intf->altsetting[0].desc.bInterfaceNumber); - return -EINVAL; - } - - if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { - uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " - "claimed\n", dev->udev->devnum, - intf->altsetting[0].desc.bInterfaceNumber); - return -EINVAL; - } - - streaming = kzalloc(sizeof *streaming, GFP_KERNEL); - if (streaming == NULL) { - usb_driver_release_interface(&uvc_driver.driver, intf); - return -EINVAL; - } - - mutex_init(&streaming->mutex); - streaming->dev = dev; - streaming->intf = usb_get_intf(intf); - streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; - - /* The Pico iMage webcam has its class-specific interface descriptors - * after the endpoint descriptors. - */ - if (buflen == 0) { - for (i = 0; i < alts->desc.bNumEndpoints; ++i) { - struct usb_host_endpoint *ep = &alts->endpoint[i]; - - if (ep->extralen == 0) - continue; - - if (ep->extralen > 2 && - ep->extra[1] == USB_DT_CS_INTERFACE) { - uvc_trace(UVC_TRACE_DESCR, "trying extra data " - "from endpoint %u.\n", i); - buffer = alts->endpoint[i].extra; - buflen = alts->endpoint[i].extralen; - break; - } - } - } - - /* Skip the standard interface descriptors. */ - while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { - buflen -= buffer[0]; - buffer += buffer[0]; - } - - if (buflen <= 2) { - uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " - "interface descriptors found.\n"); - goto error; - } - - /* Parse the header descriptor. */ - switch (buffer[2]) { - case UVC_VS_OUTPUT_HEADER: - streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - size = 9; - break; - - case UVC_VS_INPUT_HEADER: - streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - size = 13; - break; - - default: - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " - "%d HEADER descriptor not found.\n", dev->udev->devnum, - alts->desc.bInterfaceNumber); - goto error; - } - - p = buflen >= 4 ? buffer[3] : 0; - n = buflen >= size ? buffer[size-1] : 0; - - if (buflen < size + p*n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d HEADER descriptor is invalid.\n", - dev->udev->devnum, alts->desc.bInterfaceNumber); - goto error; - } - - streaming->header.bNumFormats = p; - streaming->header.bEndpointAddress = buffer[6]; - if (buffer[2] == UVC_VS_INPUT_HEADER) { - streaming->header.bmInfo = buffer[7]; - streaming->header.bTerminalLink = buffer[8]; - streaming->header.bStillCaptureMethod = buffer[9]; - streaming->header.bTriggerSupport = buffer[10]; - streaming->header.bTriggerUsage = buffer[11]; - } else { - streaming->header.bTerminalLink = buffer[7]; - } - streaming->header.bControlSize = n; - - streaming->header.bmaControls = kmemdup(&buffer[size], p * n, - GFP_KERNEL); - if (streaming->header.bmaControls == NULL) { - ret = -ENOMEM; - goto error; - } - - buflen -= buffer[0]; - buffer += buffer[0]; - - _buffer = buffer; - _buflen = buflen; - - /* Count the format and frame descriptors. */ - while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { - switch (_buffer[2]) { - case UVC_VS_FORMAT_UNCOMPRESSED: - case UVC_VS_FORMAT_MJPEG: - case UVC_VS_FORMAT_FRAME_BASED: - nformats++; - break; - - case UVC_VS_FORMAT_DV: - /* DV format has no frame descriptor. We will create a - * dummy frame descriptor with a dummy frame interval. - */ - nformats++; - nframes++; - nintervals++; - break; - - case UVC_VS_FORMAT_MPEG2TS: - case UVC_VS_FORMAT_STREAM_BASED: - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " - "interface %d FORMAT %u is not supported.\n", - dev->udev->devnum, - alts->desc.bInterfaceNumber, _buffer[2]); - break; - - case UVC_VS_FRAME_UNCOMPRESSED: - case UVC_VS_FRAME_MJPEG: - nframes++; - if (_buflen > 25) - nintervals += _buffer[25] ? _buffer[25] : 3; - break; - - case UVC_VS_FRAME_FRAME_BASED: - nframes++; - if (_buflen > 21) - nintervals += _buffer[21] ? _buffer[21] : 3; - break; - } - - _buflen -= _buffer[0]; - _buffer += _buffer[0]; - } - - if (nformats == 0) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " - "%d has no supported formats defined.\n", - dev->udev->devnum, alts->desc.bInterfaceNumber); - goto error; - } - - size = nformats * sizeof *format + nframes * sizeof *frame - + nintervals * sizeof *interval; - format = kzalloc(size, GFP_KERNEL); - if (format == NULL) { - ret = -ENOMEM; - goto error; - } - - frame = (struct uvc_frame *)&format[nformats]; - interval = (__u32 *)&frame[nframes]; - - streaming->format = format; - streaming->nformats = nformats; - - /* Parse the format descriptors. */ - while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { - switch (buffer[2]) { - case UVC_VS_FORMAT_UNCOMPRESSED: - case UVC_VS_FORMAT_MJPEG: - case UVC_VS_FORMAT_DV: - case UVC_VS_FORMAT_FRAME_BASED: - format->frame = frame; - ret = uvc_parse_format(dev, streaming, format, - &interval, buffer, buflen); - if (ret < 0) - goto error; - - frame += format->nframes; - format++; - - buflen -= ret; - buffer += ret; - continue; - - default: - break; - } - - buflen -= buffer[0]; - buffer += buffer[0]; - } - - if (buflen) - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " - "%d has %u bytes of trailing descriptor garbage.\n", - dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); - - /* Parse the alternate settings to find the maximum bandwidth. */ - for (i = 0; i < intf->num_altsetting; ++i) { - struct usb_host_endpoint *ep; - alts = &intf->altsetting[i]; - ep = uvc_find_endpoint(alts, - streaming->header.bEndpointAddress); - if (ep == NULL) - continue; - - psize = le16_to_cpu(ep->desc.wMaxPacketSize); - psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); - if (psize > streaming->maxpsize) - streaming->maxpsize = psize; - } - - list_add_tail(&streaming->list, &dev->streams); - return 0; - -error: - usb_driver_release_interface(&uvc_driver.driver, intf); - usb_put_intf(intf); - kfree(streaming->format); - kfree(streaming->header.bmaControls); - kfree(streaming); - return ret; -} - -static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, - unsigned int num_pads, unsigned int extra_size) -{ - struct uvc_entity *entity; - unsigned int num_inputs; - unsigned int size; - unsigned int i; - - extra_size = ALIGN(extra_size, sizeof(*entity->pads)); - num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; - size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads - + num_inputs; - entity = kzalloc(size, GFP_KERNEL); - if (entity == NULL) - return NULL; - - entity->id = id; - entity->type = type; - - entity->num_links = 0; - entity->num_pads = num_pads; - entity->pads = ((void *)(entity + 1)) + extra_size; - - for (i = 0; i < num_inputs; ++i) - entity->pads[i].flags = MEDIA_PAD_FL_SINK; - if (!UVC_ENTITY_IS_OTERM(entity)) - entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; - - entity->bNrInPins = num_inputs; - entity->baSourceID = (__u8 *)(&entity->pads[num_pads]); - - return entity; -} - -/* Parse vendor-specific extensions. */ -static int uvc_parse_vendor_control(struct uvc_device *dev, - const unsigned char *buffer, int buflen) -{ - struct usb_device *udev = dev->udev; - struct usb_host_interface *alts = dev->intf->cur_altsetting; - struct uvc_entity *unit; - unsigned int n, p; - int handled = 0; - - switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { - case 0x046d: /* Logitech */ - if (buffer[1] != 0x41 || buffer[2] != 0x01) - break; - - /* Logitech implements several vendor specific functions - * through vendor specific extension units (LXU). - * - * The LXU descriptors are similar to XU descriptors - * (see "USB Device Video Class for Video Devices", section - * 3.7.2.6 "Extension Unit Descriptor") with the following - * differences: - * - * ---------------------------------------------------------- - * 0 bLength 1 Number - * Size of this descriptor, in bytes: 24+p+n*2 - * ---------------------------------------------------------- - * 23+p+n bmControlsType N Bitmap - * Individual bits in the set are defined: - * 0: Absolute - * 1: Relative - * - * This bitset is mapped exactly the same as bmControls. - * ---------------------------------------------------------- - * 23+p+n*2 bReserved 1 Boolean - * ---------------------------------------------------------- - * 24+p+n*2 iExtension 1 Index - * Index of a string descriptor that describes this - * extension unit. - * ---------------------------------------------------------- - */ - p = buflen >= 22 ? buffer[21] : 0; - n = buflen >= 25 + p ? buffer[22+p] : 0; - - if (buflen < 25 + p + 2*n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d EXTENSION_UNIT error\n", - udev->devnum, alts->desc.bInterfaceNumber); - break; - } - - unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], - p + 1, 2*n); - if (unit == NULL) - return -ENOMEM; - - memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); - unit->extension.bNumControls = buffer[20]; - memcpy(unit->baSourceID, &buffer[22], p); - unit->extension.bControlSize = buffer[22+p]; - unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); - unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) - + n; - memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); - - if (buffer[24+p+2*n] != 0) - usb_string(udev, buffer[24+p+2*n], unit->name, - sizeof unit->name); - else - sprintf(unit->name, "Extension %u", buffer[3]); - - list_add_tail(&unit->list, &dev->entities); - handled = 1; - break; - } - - return handled; -} - -static int uvc_parse_standard_control(struct uvc_device *dev, - const unsigned char *buffer, int buflen) -{ - struct usb_device *udev = dev->udev; - struct uvc_entity *unit, *term; - struct usb_interface *intf; - struct usb_host_interface *alts = dev->intf->cur_altsetting; - unsigned int i, n, p, len; - __u16 type; - - switch (buffer[2]) { - case UVC_VC_HEADER: - n = buflen >= 12 ? buffer[11] : 0; - - if (buflen < 12 || buflen < 12 + n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d HEADER error\n", udev->devnum, - alts->desc.bInterfaceNumber); - return -EINVAL; - } - - dev->uvc_version = get_unaligned_le16(&buffer[3]); - dev->clock_frequency = get_unaligned_le32(&buffer[7]); - - /* Parse all USB Video Streaming interfaces. */ - for (i = 0; i < n; ++i) { - intf = usb_ifnum_to_if(udev, buffer[12+i]); - if (intf == NULL) { - uvc_trace(UVC_TRACE_DESCR, "device %d " - "interface %d doesn't exists\n", - udev->devnum, i); - continue; - } - - uvc_parse_streaming(dev, intf); - } - break; - - case UVC_VC_INPUT_TERMINAL: - if (buflen < 8) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d INPUT_TERMINAL error\n", - udev->devnum, alts->desc.bInterfaceNumber); - return -EINVAL; - } - - /* Make sure the terminal type MSB is not null, otherwise it - * could be confused with a unit. - */ - type = get_unaligned_le16(&buffer[4]); - if ((type & 0xff00) == 0) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d INPUT_TERMINAL %d has invalid " - "type 0x%04x, skipping\n", udev->devnum, - alts->desc.bInterfaceNumber, - buffer[3], type); - return 0; - } - - n = 0; - p = 0; - len = 8; - - if (type == UVC_ITT_CAMERA) { - n = buflen >= 15 ? buffer[14] : 0; - len = 15; - - } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { - n = buflen >= 9 ? buffer[8] : 0; - p = buflen >= 10 + n ? buffer[9+n] : 0; - len = 10; - } - - if (buflen < len + n + p) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d INPUT_TERMINAL error\n", - udev->devnum, alts->desc.bInterfaceNumber); - return -EINVAL; - } - - term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], - 1, n + p); - if (term == NULL) - return -ENOMEM; - - if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { - term->camera.bControlSize = n; - term->camera.bmControls = (__u8 *)term + sizeof *term; - term->camera.wObjectiveFocalLengthMin = - get_unaligned_le16(&buffer[8]); - term->camera.wObjectiveFocalLengthMax = - get_unaligned_le16(&buffer[10]); - term->camera.wOcularFocalLength = - get_unaligned_le16(&buffer[12]); - memcpy(term->camera.bmControls, &buffer[15], n); - } else if (UVC_ENTITY_TYPE(term) == - UVC_ITT_MEDIA_TRANSPORT_INPUT) { - term->media.bControlSize = n; - term->media.bmControls = (__u8 *)term + sizeof *term; - term->media.bTransportModeSize = p; - term->media.bmTransportModes = (__u8 *)term - + sizeof *term + n; - memcpy(term->media.bmControls, &buffer[9], n); - memcpy(term->media.bmTransportModes, &buffer[10+n], p); - } - - if (buffer[7] != 0) - usb_string(udev, buffer[7], term->name, - sizeof term->name); - else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) - sprintf(term->name, "Camera %u", buffer[3]); - else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) - sprintf(term->name, "Media %u", buffer[3]); - else - sprintf(term->name, "Input %u", buffer[3]); - - list_add_tail(&term->list, &dev->entities); - break; - - case UVC_VC_OUTPUT_TERMINAL: - if (buflen < 9) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d OUTPUT_TERMINAL error\n", - udev->devnum, alts->desc.bInterfaceNumber); - return -EINVAL; - } - - /* Make sure the terminal type MSB is not null, otherwise it - * could be confused with a unit. - */ - type = get_unaligned_le16(&buffer[4]); - if ((type & 0xff00) == 0) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d OUTPUT_TERMINAL %d has invalid " - "type 0x%04x, skipping\n", udev->devnum, - alts->desc.bInterfaceNumber, buffer[3], type); - return 0; - } - - term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], - 1, 0); - if (term == NULL) - return -ENOMEM; - - memcpy(term->baSourceID, &buffer[7], 1); - - if (buffer[8] != 0) - usb_string(udev, buffer[8], term->name, - sizeof term->name); - else - sprintf(term->name, "Output %u", buffer[3]); - - list_add_tail(&term->list, &dev->entities); - break; - - case UVC_VC_SELECTOR_UNIT: - p = buflen >= 5 ? buffer[4] : 0; - - if (buflen < 5 || buflen < 6 + p) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d SELECTOR_UNIT error\n", - udev->devnum, alts->desc.bInterfaceNumber); - return -EINVAL; - } - - unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); - if (unit == NULL) - return -ENOMEM; - - memcpy(unit->baSourceID, &buffer[5], p); - - if (buffer[5+p] != 0) - usb_string(udev, buffer[5+p], unit->name, - sizeof unit->name); - else - sprintf(unit->name, "Selector %u", buffer[3]); - - list_add_tail(&unit->list, &dev->entities); - break; - - case UVC_VC_PROCESSING_UNIT: - n = buflen >= 8 ? buffer[7] : 0; - p = dev->uvc_version >= 0x0110 ? 10 : 9; - - if (buflen < p + n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d PROCESSING_UNIT error\n", - udev->devnum, alts->desc.bInterfaceNumber); - return -EINVAL; - } - - unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); - if (unit == NULL) - return -ENOMEM; - - memcpy(unit->baSourceID, &buffer[4], 1); - unit->processing.wMaxMultiplier = - get_unaligned_le16(&buffer[5]); - unit->processing.bControlSize = buffer[7]; - unit->processing.bmControls = (__u8 *)unit + sizeof *unit; - memcpy(unit->processing.bmControls, &buffer[8], n); - if (dev->uvc_version >= 0x0110) - unit->processing.bmVideoStandards = buffer[9+n]; - - if (buffer[8+n] != 0) - usb_string(udev, buffer[8+n], unit->name, - sizeof unit->name); - else - sprintf(unit->name, "Processing %u", buffer[3]); - - list_add_tail(&unit->list, &dev->entities); - break; - - case UVC_VC_EXTENSION_UNIT: - p = buflen >= 22 ? buffer[21] : 0; - n = buflen >= 24 + p ? buffer[22+p] : 0; - - if (buflen < 24 + p + n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " - "interface %d EXTENSION_UNIT error\n", - udev->devnum, alts->desc.bInterfaceNumber); - return -EINVAL; - } - - unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); - if (unit == NULL) - return -ENOMEM; - - memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); - unit->extension.bNumControls = buffer[20]; - memcpy(unit->baSourceID, &buffer[22], p); - unit->extension.bControlSize = buffer[22+p]; - unit->extension.bmControls = (__u8 *)unit + sizeof *unit; - memcpy(unit->extension.bmControls, &buffer[23+p], n); - - if (buffer[23+p+n] != 0) - usb_string(udev, buffer[23+p+n], unit->name, - sizeof unit->name); - else - sprintf(unit->name, "Extension %u", buffer[3]); - - list_add_tail(&unit->list, &dev->entities); - break; - - default: - uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " - "descriptor (%u)\n", buffer[2]); - break; - } - - return 0; -} - -static int uvc_parse_control(struct uvc_device *dev) -{ - struct usb_host_interface *alts = dev->intf->cur_altsetting; - unsigned char *buffer = alts->extra; - int buflen = alts->extralen; - int ret; - - /* Parse the default alternate setting only, as the UVC specification - * defines a single alternate setting, the default alternate setting - * zero. - */ - - while (buflen > 2) { - if (uvc_parse_vendor_control(dev, buffer, buflen) || - buffer[1] != USB_DT_CS_INTERFACE) - goto next_descriptor; - - if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) - return ret; - -next_descriptor: - buflen -= buffer[0]; - buffer += buffer[0]; - } - - /* Check if the optional status endpoint is present. Built-in iSight - * webcams have an interrupt endpoint but spit proprietary data that - * don't conform to the UVC status endpoint messages. Don't try to - * handle the interrupt endpoint for those cameras. - */ - if (alts->desc.bNumEndpoints == 1 && - !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { - struct usb_host_endpoint *ep = &alts->endpoint[0]; - struct usb_endpoint_descriptor *desc = &ep->desc; - - if (usb_endpoint_is_int_in(desc) && - le16_to_cpu(desc->wMaxPacketSize) >= 8 && - desc->bInterval != 0) { - uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " - "(addr %02x).\n", desc->bEndpointAddress); - dev->int_ep = ep; - } - } - - return 0; -} - -/* ------------------------------------------------------------------------ - * UVC device scan - */ - -/* - * Scan the UVC descriptors to locate a chain starting at an Output Terminal - * and containing the following units: - * - * - one or more Output Terminals (USB Streaming or Display) - * - zero or one Processing Unit - * - zero, one or more single-input Selector Units - * - zero or one multiple-input Selector Units, provided all inputs are - * connected to input terminals - * - zero, one or mode single-input Extension Units - * - one or more Input Terminals (Camera, External or USB Streaming) - * - * The terminal and units must match on of the following structures: - * - * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) - * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... - * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) - * - * +---------+ +---------+ -> OTT_*(0) - * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... - * +---------+ +---------+ -> OTT_*(n) - * - * The Processing Unit and Extension Units can be in any order. Additional - * Extension Units connected to the main chain as single-unit branches are - * also supported. Single-input Selector Units are ignored. - */ -static int uvc_scan_chain_entity(struct uvc_video_chain *chain, - struct uvc_entity *entity) -{ - switch (UVC_ENTITY_TYPE(entity)) { - case UVC_VC_EXTENSION_UNIT: - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" <- XU %d", entity->id); - - if (entity->bNrInPins != 1) { - uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " - "than 1 input pin.\n", entity->id); - return -1; - } - - break; - - case UVC_VC_PROCESSING_UNIT: - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" <- PU %d", entity->id); - - if (chain->processing != NULL) { - uvc_trace(UVC_TRACE_DESCR, "Found multiple " - "Processing Units in chain.\n"); - return -1; - } - - chain->processing = entity; - break; - - case UVC_VC_SELECTOR_UNIT: - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" <- SU %d", entity->id); - - /* Single-input selector units are ignored. */ - if (entity->bNrInPins == 1) - break; - - if (chain->selector != NULL) { - uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " - "Units in chain.\n"); - return -1; - } - - chain->selector = entity; - break; - - case UVC_ITT_VENDOR_SPECIFIC: - case UVC_ITT_CAMERA: - case UVC_ITT_MEDIA_TRANSPORT_INPUT: - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" <- IT %d\n", entity->id); - - break; - - case UVC_OTT_VENDOR_SPECIFIC: - case UVC_OTT_DISPLAY: - case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" OT %d", entity->id); - - break; - - case UVC_TT_STREAMING: - if (UVC_ENTITY_IS_ITERM(entity)) { - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" <- IT %d\n", entity->id); - } else { - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" OT %d", entity->id); - } - - break; - - default: - uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " - "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); - return -1; - } - - list_add_tail(&entity->chain, &chain->entities); - return 0; -} - -static int uvc_scan_chain_forward(struct uvc_video_chain *chain, - struct uvc_entity *entity, struct uvc_entity *prev) -{ - struct uvc_entity *forward; - int found; - - /* Forward scan */ - forward = NULL; - found = 0; - - while (1) { - forward = uvc_entity_by_reference(chain->dev, entity->id, - forward); - if (forward == NULL) - break; - if (forward == prev) - continue; - - switch (UVC_ENTITY_TYPE(forward)) { - case UVC_VC_EXTENSION_UNIT: - if (forward->bNrInPins != 1) { - uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " - "has more than 1 input pin.\n", - entity->id); - return -EINVAL; - } - - list_add_tail(&forward->chain, &chain->entities); - if (uvc_trace_param & UVC_TRACE_PROBE) { - if (!found) - printk(" (->"); - - printk(" XU %d", forward->id); - found = 1; - } - break; - - case UVC_OTT_VENDOR_SPECIFIC: - case UVC_OTT_DISPLAY: - case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: - case UVC_TT_STREAMING: - if (UVC_ENTITY_IS_ITERM(forward)) { - uvc_trace(UVC_TRACE_DESCR, "Unsupported input " - "terminal %u.\n", forward->id); - return -EINVAL; - } - - list_add_tail(&forward->chain, &chain->entities); - if (uvc_trace_param & UVC_TRACE_PROBE) { - if (!found) - printk(" (->"); - - printk(" OT %d", forward->id); - found = 1; - } - break; - } - } - if (found) - printk(")"); - - return 0; -} - -static int uvc_scan_chain_backward(struct uvc_video_chain *chain, - struct uvc_entity **_entity) -{ - struct uvc_entity *entity = *_entity; - struct uvc_entity *term; - int id = -EINVAL, i; - - switch (UVC_ENTITY_TYPE(entity)) { - case UVC_VC_EXTENSION_UNIT: - case UVC_VC_PROCESSING_UNIT: - id = entity->baSourceID[0]; - break; - - case UVC_VC_SELECTOR_UNIT: - /* Single-input selector units are ignored. */ - if (entity->bNrInPins == 1) { - id = entity->baSourceID[0]; - break; - } - - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" <- IT"); - - chain->selector = entity; - for (i = 0; i < entity->bNrInPins; ++i) { - id = entity->baSourceID[i]; - term = uvc_entity_by_id(chain->dev, id); - if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { - uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " - "input %d isn't connected to an " - "input terminal\n", entity->id, i); - return -1; - } - - if (uvc_trace_param & UVC_TRACE_PROBE) - printk(" %d", term->id); - - list_add_tail(&term->chain, &chain->entities); - uvc_scan_chain_forward(chain, term, entity); - } - - if (uvc_trace_param & UVC_TRACE_PROBE) - printk("\n"); - - id = 0; - break; - - case UVC_ITT_VENDOR_SPECIFIC: - case UVC_ITT_CAMERA: - case UVC_ITT_MEDIA_TRANSPORT_INPUT: - case UVC_OTT_VENDOR_SPECIFIC: - case UVC_OTT_DISPLAY: - case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: - case UVC_TT_STREAMING: - id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; - break; - } - - if (id <= 0) { - *_entity = NULL; - return id; - } - - entity = uvc_entity_by_id(chain->dev, id); - if (entity == NULL) { - uvc_trace(UVC_TRACE_DESCR, "Found reference to " - "unknown entity %d.\n", id); - return -EINVAL; - } - - *_entity = entity; - return 0; -} - -static int uvc_scan_chain(struct uvc_video_chain *chain, - struct uvc_entity *term) -{ - struct uvc_entity *entity, *prev; - - uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); - - entity = term; - prev = NULL; - - while (entity != NULL) { - /* Entity must not be part of an existing chain */ - if (entity->chain.next || entity->chain.prev) { - uvc_trace(UVC_TRACE_DESCR, "Found reference to " - "entity %d already in chain.\n", entity->id); - return -EINVAL; - } - - /* Process entity */ - if (uvc_scan_chain_entity(chain, entity) < 0) - return -EINVAL; - - /* Forward scan */ - if (uvc_scan_chain_forward(chain, entity, prev) < 0) - return -EINVAL; - - /* Backward scan */ - prev = entity; - if (uvc_scan_chain_backward(chain, &entity) < 0) - return -EINVAL; - } - - return 0; -} - -static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, - char *buffer) -{ - struct uvc_entity *term; - unsigned int nterms = 0; - char *p = buffer; - - list_for_each_entry(term, terms, chain) { - if (!UVC_ENTITY_IS_TERM(term) || - UVC_TERM_DIRECTION(term) != dir) - continue; - - if (nterms) - p += sprintf(p, ","); - if (++nterms >= 4) { - p += sprintf(p, "..."); - break; - } - p += sprintf(p, "%u", term->id); - } - - return p - buffer; -} - -static const char *uvc_print_chain(struct uvc_video_chain *chain) -{ - static char buffer[43]; - char *p = buffer; - - p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); - p += sprintf(p, " -> "); - uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); - - return buffer; -} - -/* - * Scan the device for video chains and register video devices. - * - * Chains are scanned starting at their output terminals and walked backwards. - */ -static int uvc_scan_device(struct uvc_device *dev) -{ - struct uvc_video_chain *chain; - struct uvc_entity *term; - - list_for_each_entry(term, &dev->entities, list) { - if (!UVC_ENTITY_IS_OTERM(term)) - continue; - - /* If the terminal is already included in a chain, skip it. - * This can happen for chains that have multiple output - * terminals, where all output terminals beside the first one - * will be inserted in the chain in forward scans. - */ - if (term->chain.next || term->chain.prev) - continue; - - chain = kzalloc(sizeof(*chain), GFP_KERNEL); - if (chain == NULL) - return -ENOMEM; - - INIT_LIST_HEAD(&chain->entities); - mutex_init(&chain->ctrl_mutex); - chain->dev = dev; - - if (uvc_scan_chain(chain, term) < 0) { - kfree(chain); - continue; - } - - uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", - uvc_print_chain(chain)); - - list_add_tail(&chain->list, &dev->chains); - } - - if (list_empty(&dev->chains)) { - uvc_printk(KERN_INFO, "No valid video chain found.\n"); - return -1; - } - - return 0; -} - -/* ------------------------------------------------------------------------ - * Video device registration and unregistration - */ - -/* - * Delete the UVC device. - * - * Called by the kernel when the last reference to the uvc_device structure - * is released. - * - * As this function is called after or during disconnect(), all URBs have - * already been canceled by the USB core. There is no need to kill the - * interrupt URB manually. - */ -static void uvc_delete(struct uvc_device *dev) -{ - struct list_head *p, *n; - - usb_put_intf(dev->intf); - usb_put_dev(dev->udev); - - uvc_status_cleanup(dev); - uvc_ctrl_cleanup_device(dev); - - if (dev->vdev.dev) - v4l2_device_unregister(&dev->vdev); -#ifdef CONFIG_MEDIA_CONTROLLER - if (media_devnode_is_registered(&dev->mdev.devnode)) - media_device_unregister(&dev->mdev); -#endif - - list_for_each_safe(p, n, &dev->chains) { - struct uvc_video_chain *chain; - chain = list_entry(p, struct uvc_video_chain, list); - kfree(chain); - } - - list_for_each_safe(p, n, &dev->entities) { - struct uvc_entity *entity; - entity = list_entry(p, struct uvc_entity, list); -#ifdef CONFIG_MEDIA_CONTROLLER - uvc_mc_cleanup_entity(entity); -#endif - if (entity->vdev) { - video_device_release(entity->vdev); - entity->vdev = NULL; - } - kfree(entity); - } - - list_for_each_safe(p, n, &dev->streams) { - struct uvc_streaming *streaming; - streaming = list_entry(p, struct uvc_streaming, list); - usb_driver_release_interface(&uvc_driver.driver, - streaming->intf); - usb_put_intf(streaming->intf); - kfree(streaming->format); - kfree(streaming->header.bmaControls); - kfree(streaming); - } - - kfree(dev); -} - -static void uvc_release(struct video_device *vdev) -{ - struct uvc_streaming *stream = video_get_drvdata(vdev); - struct uvc_device *dev = stream->dev; - - /* Decrement the registered streams count and delete the device when it - * reaches zero. - */ - if (atomic_dec_and_test(&dev->nstreams)) - uvc_delete(dev); -} - -/* - * Unregister the video devices. - */ -static void uvc_unregister_video(struct uvc_device *dev) -{ - struct uvc_streaming *stream; - - /* Unregistering all video devices might result in uvc_delete() being - * called from inside the loop if there's no open file handle. To avoid - * that, increment the stream count before iterating over the streams - * and decrement it when done. - */ - atomic_inc(&dev->nstreams); - - list_for_each_entry(stream, &dev->streams, list) { - if (stream->vdev == NULL) - continue; - - video_unregister_device(stream->vdev); - stream->vdev = NULL; - - uvc_debugfs_cleanup_stream(stream); - } - - /* Decrement the stream count and call uvc_delete explicitly if there - * are no stream left. - */ - if (atomic_dec_and_test(&dev->nstreams)) - uvc_delete(dev); -} - -static int uvc_register_video(struct uvc_device *dev, - struct uvc_streaming *stream) -{ - struct video_device *vdev; - int ret; - - /* Initialize the streaming interface with default streaming - * parameters. - */ - ret = uvc_video_init(stream); - if (ret < 0) { - uvc_printk(KERN_ERR, "Failed to initialize the device " - "(%d).\n", ret); - return ret; - } - - uvc_debugfs_init_stream(stream); - - /* Register the device with V4L. */ - vdev = video_device_alloc(); - if (vdev == NULL) { - uvc_printk(KERN_ERR, "Failed to allocate video device (%d).\n", - ret); - return -ENOMEM; - } - - /* We already hold a reference to dev->udev. The video device will be - * unregistered before the reference is released, so we don't need to - * get another one. - */ - vdev->v4l2_dev = &dev->vdev; - vdev->fops = &uvc_fops; - vdev->release = uvc_release; - strlcpy(vdev->name, dev->name, sizeof vdev->name); - - /* Set the driver data before calling video_register_device, otherwise - * uvc_v4l2_open might race us. - */ - stream->vdev = vdev; - video_set_drvdata(vdev, stream); - - ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); - if (ret < 0) { - uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", - ret); - stream->vdev = NULL; - video_device_release(vdev); - return ret; - } - - atomic_inc(&dev->nstreams); - return 0; -} - -/* - * Register all video devices in all chains. - */ -static int uvc_register_terms(struct uvc_device *dev, - struct uvc_video_chain *chain) -{ - struct uvc_streaming *stream; - struct uvc_entity *term; - int ret; - - list_for_each_entry(term, &chain->entities, chain) { - if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) - continue; - - stream = uvc_stream_by_id(dev, term->id); - if (stream == NULL) { - uvc_printk(KERN_INFO, "No streaming interface found " - "for terminal %u.", term->id); - continue; - } - - stream->chain = chain; - ret = uvc_register_video(dev, stream); - if (ret < 0) - return ret; - - term->vdev = stream->vdev; - } - - return 0; -} - -static int uvc_register_chains(struct uvc_device *dev) -{ - struct uvc_video_chain *chain; - int ret; - - list_for_each_entry(chain, &dev->chains, list) { - ret = uvc_register_terms(dev, chain); - if (ret < 0) - return ret; - -#ifdef CONFIG_MEDIA_CONTROLLER - ret = uvc_mc_register_entities(chain); - if (ret < 0) { - uvc_printk(KERN_INFO, "Failed to register entites " - "(%d).\n", ret); - } -#endif - } - - return 0; -} - -/* ------------------------------------------------------------------------ - * USB probe, disconnect, suspend and resume - */ - -static int uvc_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct usb_device *udev = interface_to_usbdev(intf); - struct uvc_device *dev; - int ret; - - if (id->idVendor && id->idProduct) - uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " - "(%04x:%04x)\n", udev->devpath, id->idVendor, - id->idProduct); - else - uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", - udev->devpath); - - /* Allocate memory for the device and initialize it. */ - if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) - return -ENOMEM; - - INIT_LIST_HEAD(&dev->entities); - INIT_LIST_HEAD(&dev->chains); - INIT_LIST_HEAD(&dev->streams); - atomic_set(&dev->nstreams, 0); - atomic_set(&dev->users, 0); - atomic_set(&dev->nmappings, 0); - - dev->udev = usb_get_dev(udev); - dev->intf = usb_get_intf(intf); - dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; - dev->quirks = (uvc_quirks_param == -1) - ? id->driver_info : uvc_quirks_param; - - if (udev->product != NULL) - strlcpy(dev->name, udev->product, sizeof dev->name); - else - snprintf(dev->name, sizeof dev->name, - "UVC Camera (%04x:%04x)", - le16_to_cpu(udev->descriptor.idVendor), - le16_to_cpu(udev->descriptor.idProduct)); - - /* Parse the Video Class control descriptor. */ - if (uvc_parse_control(dev) < 0) { - uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " - "descriptors.\n"); - goto error; - } - - uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", - dev->uvc_version >> 8, dev->uvc_version & 0xff, - udev->product ? udev->product : "<unnamed>", - le16_to_cpu(udev->descriptor.idVendor), - le16_to_cpu(udev->descriptor.idProduct)); - - if (dev->quirks != id->driver_info) { - uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " - "parameter for testing purpose.\n", dev->quirks); - uvc_printk(KERN_INFO, "Please report required quirks to the " - "linux-uvc-devel mailing list.\n"); - } - - /* Register the media and V4L2 devices. */ -#ifdef CONFIG_MEDIA_CONTROLLER - dev->mdev.dev = &intf->dev; - strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); - if (udev->serial) - strlcpy(dev->mdev.serial, udev->serial, - sizeof(dev->mdev.serial)); - strcpy(dev->mdev.bus_info, udev->devpath); - dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); - dev->mdev.driver_version = LINUX_VERSION_CODE; - if (media_device_register(&dev->mdev) < 0) - goto error; - - dev->vdev.mdev = &dev->mdev; -#endif - if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) - goto error; - - /* Initialize controls. */ - if (uvc_ctrl_init_device(dev) < 0) - goto error; - - /* Scan the device for video chains. */ - if (uvc_scan_device(dev) < 0) - goto error; - - /* Register video device nodes. */ - if (uvc_register_chains(dev) < 0) - goto error; - - /* Save our data pointer in the interface data. */ - usb_set_intfdata(intf, dev); - - /* Initialize the interrupt URB. */ - if ((ret = uvc_status_init(dev)) < 0) { - uvc_printk(KERN_INFO, "Unable to initialize the status " - "endpoint (%d), status interrupt will not be " - "supported.\n", ret); - } - - uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); - usb_enable_autosuspend(udev); - return 0; - -error: - uvc_unregister_video(dev); - return -ENODEV; -} - -static void uvc_disconnect(struct usb_interface *intf) -{ - struct uvc_device *dev = usb_get_intfdata(intf); - - /* Set the USB interface data to NULL. This can be done outside the - * lock, as there's no other reader. - */ - usb_set_intfdata(intf, NULL); - - if (intf->cur_altsetting->desc.bInterfaceSubClass == - UVC_SC_VIDEOSTREAMING) - return; - - dev->state |= UVC_DEV_DISCONNECTED; - - uvc_unregister_video(dev); -} - -static int uvc_suspend(struct usb_interface *intf, pm_message_t message) -{ - struct uvc_device *dev = usb_get_intfdata(intf); - struct uvc_streaming *stream; - - uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", - intf->cur_altsetting->desc.bInterfaceNumber); - - /* Controls are cached on the fly so they don't need to be saved. */ - if (intf->cur_altsetting->desc.bInterfaceSubClass == - UVC_SC_VIDEOCONTROL) - return uvc_status_suspend(dev); - - list_for_each_entry(stream, &dev->streams, list) { - if (stream->intf == intf) - return uvc_video_suspend(stream); - } - - uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " - "mismatch.\n"); - return -EINVAL; -} - -static int __uvc_resume(struct usb_interface *intf, int reset) -{ - struct uvc_device *dev = usb_get_intfdata(intf); - struct uvc_streaming *stream; - - uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", - intf->cur_altsetting->desc.bInterfaceNumber); - - if (intf->cur_altsetting->desc.bInterfaceSubClass == - UVC_SC_VIDEOCONTROL) { - if (reset) { - int ret = uvc_ctrl_resume_device(dev); - - if (ret < 0) - return ret; - } - - return uvc_status_resume(dev); - } - - list_for_each_entry(stream, &dev->streams, list) { - if (stream->intf == intf) - return uvc_video_resume(stream, reset); - } - - uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " - "mismatch.\n"); - return -EINVAL; -} - -static int uvc_resume(struct usb_interface *intf) -{ - return __uvc_resume(intf, 0); -} - -static int uvc_reset_resume(struct usb_interface *intf) -{ - return __uvc_resume(intf, 1); -} - -/* ------------------------------------------------------------------------ - * Module parameters - */ - -static int uvc_clock_param_get(char *buffer, struct kernel_param *kp) -{ - if (uvc_clock_param == CLOCK_MONOTONIC) - return sprintf(buffer, "CLOCK_MONOTONIC"); - else - return sprintf(buffer, "CLOCK_REALTIME"); -} - -static int uvc_clock_param_set(const char *val, struct kernel_param *kp) -{ - if (strncasecmp(val, "clock_", strlen("clock_")) == 0) - val += strlen("clock_"); - - if (strcasecmp(val, "monotonic") == 0) - uvc_clock_param = CLOCK_MONOTONIC; - else if (strcasecmp(val, "realtime") == 0) - uvc_clock_param = CLOCK_REALTIME; - else - return -EINVAL; - - return 0; -} - -module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, - &uvc_clock_param, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); -module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); -module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(quirks, "Forced device quirks"); -module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(trace, "Trace level bitmask"); -module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); - -/* ------------------------------------------------------------------------ - * Driver initialization and cleanup - */ - -/* - * The Logitech cameras listed below have their interface class set to - * VENDOR_SPEC because they don't announce themselves as UVC devices, even - * though they are compliant. - */ -static struct usb_device_id uvc_ids[] = { - /* LogiLink Wireless Webcam */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x0416, - .idProduct = 0xa91a, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* Genius eFace 2025 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x0458, - .idProduct = 0x706e, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* Microsoft Lifecam NX-6000 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x045e, - .idProduct = 0x00f8, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* Microsoft Lifecam VX-7000 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x045e, - .idProduct = 0x0723, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* Logitech Quickcam Fusion */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x046d, - .idProduct = 0x08c1, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0 }, - /* Logitech Quickcam Orbit MP */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x046d, - .idProduct = 0x08c2, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0 }, - /* Logitech Quickcam Pro for Notebook */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x046d, - .idProduct = 0x08c3, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0 }, - /* Logitech Quickcam Pro 5000 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x046d, - .idProduct = 0x08c5, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0 }, - /* Logitech Quickcam OEM Dell Notebook */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x046d, - .idProduct = 0x08c6, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0 }, - /* Logitech Quickcam OEM Cisco VT Camera II */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x046d, - .idProduct = 0x08c7, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0 }, - /* Chicony CNF7129 (Asus EEE 100HE) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x04f2, - .idProduct = 0xb071, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_RESTRICT_FRAME_RATE }, - /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x058f, - .idProduct = 0x3820, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* Dell XPS m1530 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x05a9, - .idProduct = 0x2640, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_DEF }, - /* Apple Built-In iSight */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x05ac, - .idProduct = 0x8501, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX - | UVC_QUIRK_BUILTIN_ISIGHT }, - /* Foxlink ("HP Webcam" on HP Mini 5103) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x05c8, - .idProduct = 0x0403, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, - /* Genesys Logic USB 2.0 PC Camera */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x05e3, - .idProduct = 0x0505, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Hercules Classic Silver */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x06f8, - .idProduct = 0x300c, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, - /* ViMicro Vega */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x0ac8, - .idProduct = 0x332d, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, - /* ViMicro - Minoru3D */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x0ac8, - .idProduct = 0x3410, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, - /* ViMicro Venus - Minoru3D */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x0ac8, - .idProduct = 0x3420, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, - /* Ophir Optronics - SPCAM 620U */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x0bd3, - .idProduct = 0x0555, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* MT6227 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x0e8d, - .idProduct = 0x0004, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX - | UVC_QUIRK_PROBE_DEF }, - /* IMC Networks (Medion Akoya) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x13d3, - .idProduct = 0x5103, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* JMicron USB2.0 XGA WebCam */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x152d, - .idProduct = 0x0310, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* Syntek (HP Spartan) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x174f, - .idProduct = 0x5212, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Syntek (Samsung Q310) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x174f, - .idProduct = 0x5931, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Syntek (Packard Bell EasyNote MX52 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x174f, - .idProduct = 0x8a12, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Syntek (Asus F9SG) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x174f, - .idProduct = 0x8a31, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Syntek (Asus U3S) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x174f, - .idProduct = 0x8a33, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Syntek (JAOtech Smart Terminal) */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x174f, - .idProduct = 0x8a34, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Miricle 307K */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x17dc, - .idProduct = 0x0202, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Lenovo Thinkpad SL400/SL500 */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x17ef, - .idProduct = 0x480b, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Aveo Technology USB 2.0 Camera */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x1871, - .idProduct = 0x0306, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX - | UVC_QUIRK_PROBE_EXTRAFIELDS }, - /* Ecamm Pico iMage */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x18cd, - .idProduct = 0xcafe, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, - /* Manta MM-353 Plako */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x18ec, - .idProduct = 0x3188, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* FSC WebCam V30S */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x18ec, - .idProduct = 0x3288, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* Arkmicro unbranded */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x18ec, - .idProduct = 0x3290, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_DEF }, - /* The Imaging Source USB CCD cameras */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x199e, - .idProduct = 0x8102, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0 }, - /* Bodelin ProScopeHR */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_DEV_HI - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x19ab, - .idProduct = 0x1000, - .bcdDevice_hi = 0x0126, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_STATUS_INTERVAL }, - /* MSI StarCam 370i */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x1b3b, - .idProduct = 0x2951, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX }, - /* SiGma Micro USB Web Camera */ - { .match_flags = USB_DEVICE_ID_MATCH_DEVICE - | USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = 0x1c4f, - .idProduct = 0x3000, - .bInterfaceClass = USB_CLASS_VIDEO, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 0, - .driver_info = UVC_QUIRK_PROBE_MINMAX - | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, - /* Generic USB Video Class */ - { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, - {} -}; - -MODULE_DEVICE_TABLE(usb, uvc_ids); - -struct uvc_driver uvc_driver = { - .driver = { - .name = "uvcvideo", - .probe = uvc_probe, - .disconnect = uvc_disconnect, - .suspend = uvc_suspend, - .resume = uvc_resume, - .reset_resume = uvc_reset_resume, - .id_table = uvc_ids, - .supports_autosuspend = 1, - }, -}; - -static int __init uvc_init(void) -{ - int ret; - - uvc_debugfs_init(); - - ret = usb_register(&uvc_driver.driver); - if (ret < 0) { - uvc_debugfs_cleanup(); - return ret; - } - - printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); - return 0; -} - -static void __exit uvc_cleanup(void) -{ - usb_deregister(&uvc_driver.driver); - uvc_debugfs_cleanup(); -} - -module_init(uvc_init); -module_exit(uvc_cleanup); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRIVER_VERSION); - 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