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path: root/drivers/media/video/uvc/uvc_driver.c
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Diffstat (limited to 'drivers/media/video/uvc/uvc_driver.c')
-rw-r--r--drivers/media/video/uvc/uvc_driver.c2472
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);
-