// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* uvc_driver.c -- USB Video Class driver
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*
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* Copyright (C) 2005-2010
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* Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*/
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#include <linux/atomic.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/usb/quirks.h>
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#include <linux/videodev2.h>
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#include <linux/vmalloc.h>
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#include <linux/wait.h>
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#include <linux/version.h>
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#include <asm/unaligned.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include "uvcvideo.h"
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#define DRIVER_AUTHOR "Laurent Pinchart " \
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"<laurent.pinchart@ideasonboard.com>"
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#define DRIVER_DESC "USB Video Class driver"
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unsigned int uvc_clock_param = CLOCK_MONOTONIC;
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unsigned int uvc_hw_timestamps_param;
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unsigned int uvc_no_drop_param;
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static unsigned int uvc_quirks_param = -1;
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unsigned int uvc_trace_param;
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unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
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/* ------------------------------------------------------------------------
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* Video formats
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*/
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static struct uvc_format_desc uvc_fmts[] = {
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{
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.name = "YUV 4:2:2 (YUYV)",
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.guid = UVC_GUID_FORMAT_YUY2,
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.fcc = V4L2_PIX_FMT_YUYV,
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},
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{
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.name = "YUV 4:2:2 (YUYV)",
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.guid = UVC_GUID_FORMAT_YUY2_ISIGHT,
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.fcc = V4L2_PIX_FMT_YUYV,
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},
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{
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.name = "YUV 4:2:0 (NV12)",
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.guid = UVC_GUID_FORMAT_NV12,
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.fcc = V4L2_PIX_FMT_NV12,
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},
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{
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.name = "MJPEG",
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.guid = UVC_GUID_FORMAT_MJPEG,
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.fcc = V4L2_PIX_FMT_MJPEG,
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},
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{
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.name = "YVU 4:2:0 (YV12)",
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.guid = UVC_GUID_FORMAT_YV12,
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.fcc = V4L2_PIX_FMT_YVU420,
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},
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{
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.name = "YUV 4:2:0 (I420)",
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.guid = UVC_GUID_FORMAT_I420,
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.fcc = V4L2_PIX_FMT_YUV420,
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},
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{
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.name = "YUV 4:2:0 (M420)",
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.guid = UVC_GUID_FORMAT_M420,
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.fcc = V4L2_PIX_FMT_M420,
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},
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{
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.name = "YUV 4:2:2 (UYVY)",
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.guid = UVC_GUID_FORMAT_UYVY,
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.fcc = V4L2_PIX_FMT_UYVY,
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},
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{
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.name = "Greyscale 8-bit (Y800)",
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.guid = UVC_GUID_FORMAT_Y800,
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.fcc = V4L2_PIX_FMT_GREY,
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},
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{
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.name = "Greyscale 8-bit (Y8 )",
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.guid = UVC_GUID_FORMAT_Y8,
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.fcc = V4L2_PIX_FMT_GREY,
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},
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{
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.name = "Greyscale 8-bit (D3DFMT_L8)",
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.guid = UVC_GUID_FORMAT_D3DFMT_L8,
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.fcc = V4L2_PIX_FMT_GREY,
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},
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{
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.name = "IR 8-bit (L8_IR)",
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.guid = UVC_GUID_FORMAT_KSMEDIA_L8_IR,
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.fcc = V4L2_PIX_FMT_GREY,
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},
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{
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.name = "Greyscale 10-bit (Y10 )",
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.guid = UVC_GUID_FORMAT_Y10,
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.fcc = V4L2_PIX_FMT_Y10,
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},
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{
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.name = "Greyscale 12-bit (Y12 )",
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.guid = UVC_GUID_FORMAT_Y12,
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.fcc = V4L2_PIX_FMT_Y12,
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},
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{
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.name = "Greyscale 16-bit (Y16 )",
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.guid = UVC_GUID_FORMAT_Y16,
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.fcc = V4L2_PIX_FMT_Y16,
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},
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{
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.name = "BGGR Bayer (BY8 )",
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.guid = UVC_GUID_FORMAT_BY8,
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.fcc = V4L2_PIX_FMT_SBGGR8,
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},
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{
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.name = "BGGR Bayer (BA81)",
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.guid = UVC_GUID_FORMAT_BA81,
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.fcc = V4L2_PIX_FMT_SBGGR8,
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},
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{
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.name = "GBRG Bayer (GBRG)",
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.guid = UVC_GUID_FORMAT_GBRG,
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.fcc = V4L2_PIX_FMT_SGBRG8,
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},
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{
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.name = "GRBG Bayer (GRBG)",
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.guid = UVC_GUID_FORMAT_GRBG,
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.fcc = V4L2_PIX_FMT_SGRBG8,
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},
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{
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.name = "RGGB Bayer (RGGB)",
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.guid = UVC_GUID_FORMAT_RGGB,
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.fcc = V4L2_PIX_FMT_SRGGB8,
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},
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{
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.name = "RGB565",
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.guid = UVC_GUID_FORMAT_RGBP,
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.fcc = V4L2_PIX_FMT_RGB565,
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},
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{
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.name = "BGR 8:8:8 (BGR3)",
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.guid = UVC_GUID_FORMAT_BGR3,
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.fcc = V4L2_PIX_FMT_BGR24,
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},
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{
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.name = "H.264",
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.guid = UVC_GUID_FORMAT_H264,
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.fcc = V4L2_PIX_FMT_H264,
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},
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{
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.name = "H.265",
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.guid = UVC_GUID_FORMAT_H265,
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.fcc = V4L2_PIX_FMT_HEVC,
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},
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{
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.name = "Greyscale 8 L/R (Y8I)",
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.guid = UVC_GUID_FORMAT_Y8I,
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.fcc = V4L2_PIX_FMT_Y8I,
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},
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{
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.name = "Greyscale 12 L/R (Y12I)",
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.guid = UVC_GUID_FORMAT_Y12I,
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.fcc = V4L2_PIX_FMT_Y12I,
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},
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{
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.name = "Depth data 16-bit (Z16)",
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.guid = UVC_GUID_FORMAT_Z16,
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.fcc = V4L2_PIX_FMT_Z16,
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},
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{
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.name = "Bayer 10-bit (SRGGB10P)",
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.guid = UVC_GUID_FORMAT_RW10,
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.fcc = V4L2_PIX_FMT_SRGGB10P,
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},
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{
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.name = "Bayer 16-bit (SBGGR16)",
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.guid = UVC_GUID_FORMAT_BG16,
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.fcc = V4L2_PIX_FMT_SBGGR16,
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},
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{
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.name = "Bayer 16-bit (SGBRG16)",
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.guid = UVC_GUID_FORMAT_GB16,
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.fcc = V4L2_PIX_FMT_SGBRG16,
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},
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{
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.name = "Bayer 16-bit (SRGGB16)",
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.guid = UVC_GUID_FORMAT_RG16,
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.fcc = V4L2_PIX_FMT_SRGGB16,
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},
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{
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.name = "Bayer 16-bit (SGRBG16)",
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.guid = UVC_GUID_FORMAT_GR16,
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.fcc = V4L2_PIX_FMT_SGRBG16,
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},
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{
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.name = "Depth data 16-bit (Z16)",
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.guid = UVC_GUID_FORMAT_INVZ,
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.fcc = V4L2_PIX_FMT_Z16,
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},
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{
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.name = "Greyscale 10-bit (Y10 )",
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.guid = UVC_GUID_FORMAT_INVI,
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.fcc = V4L2_PIX_FMT_Y10,
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},
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{
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.name = "IR:Depth 26-bit (INZI)",
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.guid = UVC_GUID_FORMAT_INZI,
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.fcc = V4L2_PIX_FMT_INZI,
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},
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{
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.name = "4-bit Depth Confidence (Packed)",
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.guid = UVC_GUID_FORMAT_CNF4,
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.fcc = V4L2_PIX_FMT_CNF4,
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},
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{
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.name = "HEVC",
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.guid = UVC_GUID_FORMAT_HEVC,
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.fcc = V4L2_PIX_FMT_HEVC,
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},
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};
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/* ------------------------------------------------------------------------
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* Utility functions
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*/
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struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
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u8 epaddr)
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{
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struct usb_host_endpoint *ep;
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unsigned int i;
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for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
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ep = &alts->endpoint[i];
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if (ep->desc.bEndpointAddress == epaddr)
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return ep;
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}
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return NULL;
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}
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static struct uvc_format_desc *uvc_format_by_guid(const u8 guid[16])
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{
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unsigned int len = ARRAY_SIZE(uvc_fmts);
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unsigned int i;
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for (i = 0; i < len; ++i) {
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if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
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return &uvc_fmts[i];
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}
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return NULL;
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}
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static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
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{
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static const enum v4l2_colorspace colorprimaries[] = {
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V4L2_COLORSPACE_DEFAULT, /* Unspecified */
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V4L2_COLORSPACE_SRGB,
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V4L2_COLORSPACE_470_SYSTEM_M,
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V4L2_COLORSPACE_470_SYSTEM_BG,
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V4L2_COLORSPACE_SMPTE170M,
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V4L2_COLORSPACE_SMPTE240M,
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};
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if (primaries < ARRAY_SIZE(colorprimaries))
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return colorprimaries[primaries];
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return V4L2_COLORSPACE_DEFAULT; /* Reserved */
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}
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static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
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{
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/*
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* V4L2 does not currently have definitions for all possible values of
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* UVC transfer characteristics. If v4l2_xfer_func is extended with new
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* values, the mapping below should be updated.
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*
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* Substitutions are taken from the mapping given for
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* V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
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*/
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static const enum v4l2_xfer_func xfer_funcs[] = {
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V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
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V4L2_XFER_FUNC_709,
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V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
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V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
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V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
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V4L2_XFER_FUNC_SMPTE240M,
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V4L2_XFER_FUNC_NONE,
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V4L2_XFER_FUNC_SRGB,
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};
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if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
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return xfer_funcs[transfer_characteristics];
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return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
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}
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static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
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{
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/*
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* V4L2 does not currently have definitions for all possible values of
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* UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
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* values, the mapping below should be updated.
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*
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* Substitutions are taken from the mapping given for
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* V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
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*
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* FCC is assumed to be close enough to 601.
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*/
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static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
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V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
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V4L2_YCBCR_ENC_709,
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V4L2_YCBCR_ENC_601, /* Substitution for FCC */
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V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
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V4L2_YCBCR_ENC_601,
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V4L2_YCBCR_ENC_SMPTE240M,
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};
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if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
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return ycbcr_encs[matrix_coefficients];
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return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
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}
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/* Simplify a fraction using a simple continued fraction decomposition. The
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* idea here is to convert fractions such as 333333/10000000 to 1/30 using
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* 32 bit arithmetic only. The algorithm is not perfect and relies upon two
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* arbitrary parameters to remove non-significative terms from the simple
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* continued fraction decomposition. Using 8 and 333 for n_terms and threshold
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* respectively seems to give nice results.
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*/
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void uvc_simplify_fraction(u32 *numerator, u32 *denominator,
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unsigned int n_terms, unsigned int threshold)
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{
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u32 *an;
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u32 x, y, r;
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unsigned int i, n;
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an = kmalloc_array(n_terms, sizeof(*an), GFP_KERNEL);
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if (an == NULL)
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return;
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/* Convert the fraction to a simple continued fraction. See
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* https://mathforum.org/dr.math/faq/faq.fractions.html
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* Stop if the current term is bigger than or equal to the given
|
* threshold.
|
*/
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x = *numerator;
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y = *denominator;
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for (n = 0; n < n_terms && y != 0; ++n) {
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an[n] = x / y;
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if (an[n] >= threshold) {
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if (n < 2)
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n++;
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break;
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}
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r = x - an[n] * y;
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x = y;
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y = r;
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}
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/* Expand the simple continued fraction back to an integer fraction. */
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x = 0;
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y = 1;
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for (i = n; i > 0; --i) {
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r = y;
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y = an[i-1] * y + x;
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x = r;
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}
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*numerator = y;
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*denominator = x;
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kfree(an);
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}
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/* 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.
|
*/
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u32 uvc_fraction_to_interval(u32 numerator, u32 denominator)
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{
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u32 multiplier;
|
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/* Saturate the result if the operation would overflow. */
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if (denominator == 0 ||
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numerator/denominator >= ((u32)-1)/10000000)
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return (u32)-1;
|
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/* Divide both the denominator and the multiplier by two until
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* numerator * multiplier doesn't overflow. If anyone knows a better
|
* algorithm please let me know.
|
*/
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multiplier = 10000000;
|
while (numerator > ((u32)-1)/multiplier) {
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multiplier /= 2;
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denominator /= 2;
|
}
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return denominator ? numerator * multiplier / denominator : 0;
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}
|
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/* ------------------------------------------------------------------------
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* Terminal and unit management
|
*/
|
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struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
|
{
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struct uvc_entity *entity;
|
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list_for_each_entry(entity, &dev->entities, list) {
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if (entity->id == id)
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return entity;
|
}
|
|
return NULL;
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}
|
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static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
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int id, struct uvc_entity *entity)
|
{
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unsigned int i;
|
|
if (entity == NULL)
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entity = list_entry(&dev->entities, struct uvc_entity, list);
|
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list_for_each_entry_continue(entity, &dev->entities, list) {
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for (i = 0; i < entity->bNrInPins; ++i)
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if (entity->baSourceID[i] == id)
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return entity;
|
}
|
|
return NULL;
|
}
|
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static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
|
{
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struct uvc_streaming *stream;
|
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list_for_each_entry(stream, &dev->streams, list) {
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if (stream->header.bTerminalLink == id)
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return stream;
|
}
|
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return NULL;
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}
|
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/* ------------------------------------------------------------------------
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* Streaming Object Management
|
*/
|
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static void uvc_stream_delete(struct uvc_streaming *stream)
|
{
|
if (stream->async_wq)
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destroy_workqueue(stream->async_wq);
|
|
mutex_destroy(&stream->mutex);
|
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usb_put_intf(stream->intf);
|
|
kfree(stream->format);
|
kfree(stream->header.bmaControls);
|
kfree(stream);
|
}
|
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static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
|
struct usb_interface *intf)
|
{
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struct uvc_streaming *stream;
|
|
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
|
if (stream == NULL)
|
return NULL;
|
|
mutex_init(&stream->mutex);
|
|
stream->dev = dev;
|
stream->intf = usb_get_intf(intf);
|
stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
|
|
/* Allocate a stream specific work queue for asynchronous tasks. */
|
stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
|
0);
|
if (!stream->async_wq) {
|
uvc_stream_delete(stream);
|
return NULL;
|
}
|
|
return stream;
|
}
|
|
/* ------------------------------------------------------------------------
|
* 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 width_multiplier = 1;
|
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) {
|
strscpy(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];
|
|
/* Some devices report a format that doesn't match what they
|
* really send.
|
*/
|
if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
|
if (format->fcc == V4L2_PIX_FMT_YUYV) {
|
strscpy(format->name, "Greyscale 8-bit (Y8 )",
|
sizeof(format->name));
|
format->fcc = V4L2_PIX_FMT_GREY;
|
format->bpp = 8;
|
width_multiplier = 2;
|
}
|
}
|
|
/* Some devices report bpp that doesn't match the format. */
|
if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
|
const struct v4l2_format_info *info =
|
v4l2_format_info(format->fcc);
|
|
if (info) {
|
unsigned int div = info->hdiv * info->vdiv;
|
|
n = info->bpp[0] * div;
|
for (i = 1; i < info->comp_planes; i++)
|
n += info->bpp[i];
|
|
format->bpp = DIV_ROUND_UP(8 * n, div);
|
}
|
}
|
|
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;
|
}
|
|
strscpy(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:
|
strscpy(format->name, "SD-DV", sizeof(format->name));
|
break;
|
case 1:
|
strscpy(format->name, "SDL-DV", sizeof(format->name));
|
break;
|
case 2:
|
strscpy(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])
|
* width_multiplier;
|
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]);
|
format->xfer_func = uvc_xfer_func(buffer[4]);
|
format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
|
|
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 = uvc_stream_new(dev, intf);
|
if (streaming == NULL) {
|
usb_driver_release_interface(&uvc_driver.driver, intf);
|
return -ENOMEM;
|
}
|
|
/* 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);
|
uvc_stream_delete(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 = roundup(extra_size, sizeof(*entity->pads));
|
if (num_pads)
|
num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
|
else
|
num_inputs = 0;
|
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) && num_pads)
|
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 + 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;
|
}
|
|
/*
|
* Reject invalid terminal types that would cause issues:
|
*
|
* - The high byte must be non-zero, otherwise it would be
|
* confused with a unit.
|
*
|
* - Bit 15 must be 0, as we use it internally as a terminal
|
* direction flag.
|
*
|
* Other unknown types are accepted.
|
*/
|
type = get_unaligned_le16(&buffer[4]);
|
if ((type & 0x7f00) == 0 || (type & 0x8000) != 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(KERN_CONT " <- 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(KERN_CONT " <- 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(KERN_CONT " <- 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(KERN_CONT " <- 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(KERN_CONT " OT %d", entity->id);
|
|
break;
|
|
case UVC_TT_STREAMING:
|
if (UVC_ENTITY_IS_ITERM(entity)) {
|
if (uvc_trace_param & UVC_TRACE_PROBE)
|
printk(KERN_CONT " <- IT %d\n", entity->id);
|
} else {
|
if (uvc_trace_param & UVC_TRACE_PROBE)
|
printk(KERN_CONT " 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;
|
if (forward->chain.next || forward->chain.prev) {
|
uvc_trace(UVC_TRACE_DESCR, "Found reference to "
|
"entity %d already in chain.\n", forward->id);
|
return -EINVAL;
|
}
|
|
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;
|
}
|
|
/*
|
* Some devices reference an output terminal as the
|
* source of extension units. This is incorrect, as
|
* output terminals only have an input pin, and thus
|
* can't be connected to any entity in the forward
|
* direction. The resulting topology would cause issues
|
* when registering the media controller graph. To
|
* avoid this problem, connect the extension unit to
|
* the source of the output terminal instead.
|
*/
|
if (UVC_ENTITY_IS_OTERM(entity)) {
|
struct uvc_entity *source;
|
|
source = uvc_entity_by_id(chain->dev,
|
entity->baSourceID[0]);
|
if (!source) {
|
uvc_trace(UVC_TRACE_DESCR,
|
"Can't connect extension unit %u in chain\n",
|
forward->id);
|
break;
|
}
|
|
forward->baSourceID[0] = source->id;
|
}
|
|
list_add_tail(&forward->chain, &chain->entities);
|
if (uvc_trace_param & UVC_TRACE_PROBE) {
|
if (!found)
|
printk(KERN_CONT " (->");
|
|
printk(KERN_CONT " 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;
|
}
|
|
if (UVC_ENTITY_IS_OTERM(entity)) {
|
uvc_trace(UVC_TRACE_DESCR,
|
"Unsupported connection between output terminals %u and %u\n",
|
entity->id, forward->id);
|
break;
|
}
|
|
list_add_tail(&forward->chain, &chain->entities);
|
if (uvc_trace_param & UVC_TRACE_PROBE) {
|
if (!found)
|
printk(KERN_CONT " (->");
|
|
printk(KERN_CONT " OT %d", forward->id);
|
found = 1;
|
}
|
break;
|
}
|
}
|
if (found)
|
printk(KERN_CONT ")");
|
|
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(KERN_CONT " <- 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 (term->chain.next || term->chain.prev) {
|
uvc_trace(UVC_TRACE_DESCR, "Found reference to "
|
"entity %d already in chain.\n",
|
term->id);
|
return -EINVAL;
|
}
|
|
if (uvc_trace_param & UVC_TRACE_PROBE)
|
printk(KERN_CONT " %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(KERN_CONT "\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;
|
}
|
|
static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
|
{
|
struct uvc_video_chain *chain;
|
|
chain = kzalloc(sizeof(*chain), GFP_KERNEL);
|
if (chain == NULL)
|
return NULL;
|
|
INIT_LIST_HEAD(&chain->entities);
|
mutex_init(&chain->ctrl_mutex);
|
chain->dev = dev;
|
v4l2_prio_init(&chain->prio);
|
|
return chain;
|
}
|
|
/*
|
* Fallback heuristic for devices that don't connect units and terminals in a
|
* valid chain.
|
*
|
* Some devices have invalid baSourceID references, causing uvc_scan_chain()
|
* to fail, but if we just take the entities we can find and put them together
|
* in the most sensible chain we can think of, turns out they do work anyway.
|
* Note: This heuristic assumes there is a single chain.
|
*
|
* At the time of writing, devices known to have such a broken chain are
|
* - Acer Integrated Camera (5986:055a)
|
* - Realtek rtl157a7 (0bda:57a7)
|
*/
|
static int uvc_scan_fallback(struct uvc_device *dev)
|
{
|
struct uvc_video_chain *chain;
|
struct uvc_entity *iterm = NULL;
|
struct uvc_entity *oterm = NULL;
|
struct uvc_entity *entity;
|
struct uvc_entity *prev;
|
|
/*
|
* Start by locating the input and output terminals. We only support
|
* devices with exactly one of each for now.
|
*/
|
list_for_each_entry(entity, &dev->entities, list) {
|
if (UVC_ENTITY_IS_ITERM(entity)) {
|
if (iterm)
|
return -EINVAL;
|
iterm = entity;
|
}
|
|
if (UVC_ENTITY_IS_OTERM(entity)) {
|
if (oterm)
|
return -EINVAL;
|
oterm = entity;
|
}
|
}
|
|
if (iterm == NULL || oterm == NULL)
|
return -EINVAL;
|
|
/* Allocate the chain and fill it. */
|
chain = uvc_alloc_chain(dev);
|
if (chain == NULL)
|
return -ENOMEM;
|
|
if (uvc_scan_chain_entity(chain, oterm) < 0)
|
goto error;
|
|
prev = oterm;
|
|
/*
|
* Add all Processing and Extension Units with two pads. The order
|
* doesn't matter much, use reverse list traversal to connect units in
|
* UVC descriptor order as we build the chain from output to input. This
|
* leads to units appearing in the order meant by the manufacturer for
|
* the cameras known to require this heuristic.
|
*/
|
list_for_each_entry_reverse(entity, &dev->entities, list) {
|
if (entity->type != UVC_VC_PROCESSING_UNIT &&
|
entity->type != UVC_VC_EXTENSION_UNIT)
|
continue;
|
|
if (entity->num_pads != 2)
|
continue;
|
|
if (uvc_scan_chain_entity(chain, entity) < 0)
|
goto error;
|
|
prev->baSourceID[0] = entity->id;
|
prev = entity;
|
}
|
|
if (uvc_scan_chain_entity(chain, iterm) < 0)
|
goto error;
|
|
prev->baSourceID[0] = iterm->id;
|
|
list_add_tail(&chain->list, &dev->chains);
|
|
uvc_trace(UVC_TRACE_PROBE,
|
"Found a video chain by fallback heuristic (%s).\n",
|
uvc_print_chain(chain));
|
|
return 0;
|
|
error:
|
kfree(chain);
|
return -EINVAL;
|
}
|
|
/*
|
* 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 = uvc_alloc_chain(dev);
|
if (chain == NULL)
|
return -ENOMEM;
|
|
term->flags |= UVC_ENTITY_FLAG_DEFAULT;
|
|
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_scan_fallback(dev);
|
|
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 cancelled by the USB core. There is no need to kill the
|
* interrupt URB manually.
|
*/
|
static void uvc_delete(struct kref *kref)
|
{
|
struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
|
struct list_head *p, *n;
|
|
uvc_status_cleanup(dev);
|
uvc_ctrl_cleanup_device(dev);
|
|
usb_put_intf(dev->intf);
|
usb_put_dev(dev->udev);
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
media_device_cleanup(&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
|
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);
|
uvc_stream_delete(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;
|
|
kref_put(&dev->ref, uvc_delete);
|
}
|
|
/*
|
* Unregister the video devices.
|
*/
|
static void uvc_unregister_video(struct uvc_device *dev)
|
{
|
struct uvc_streaming *stream;
|
|
list_for_each_entry(stream, &dev->streams, list) {
|
if (!video_is_registered(&stream->vdev))
|
continue;
|
|
video_unregister_device(&stream->vdev);
|
video_unregister_device(&stream->meta.vdev);
|
|
uvc_debugfs_cleanup_stream(stream);
|
}
|
|
uvc_status_unregister(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
|
}
|
|
int uvc_register_video_device(struct uvc_device *dev,
|
struct uvc_streaming *stream,
|
struct video_device *vdev,
|
struct uvc_video_queue *queue,
|
enum v4l2_buf_type type,
|
const struct v4l2_file_operations *fops,
|
const struct v4l2_ioctl_ops *ioctl_ops)
|
{
|
int ret;
|
|
/* Initialize the video buffers queue. */
|
ret = uvc_queue_init(queue, type, !uvc_no_drop_param);
|
if (ret)
|
return ret;
|
|
/* Register the device with V4L. */
|
|
/*
|
* 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 = fops;
|
vdev->ioctl_ops = ioctl_ops;
|
vdev->release = uvc_release;
|
vdev->prio = &stream->chain->prio;
|
if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
vdev->vfl_dir = VFL_DIR_TX;
|
else
|
vdev->vfl_dir = VFL_DIR_RX;
|
|
switch (type) {
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
default:
|
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
|
break;
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
|
break;
|
case V4L2_BUF_TYPE_META_CAPTURE:
|
vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
|
break;
|
}
|
|
strscpy(vdev->name, dev->name, sizeof(vdev->name));
|
|
/*
|
* Set the driver data before calling video_register_device, otherwise
|
* the file open() handler might race us.
|
*/
|
video_set_drvdata(vdev, stream);
|
|
ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
|
if (ret < 0) {
|
uvc_printk(KERN_ERR, "Failed to register %s device (%d).\n",
|
v4l2_type_names[type], ret);
|
return ret;
|
}
|
|
kref_get(&dev->ref);
|
return 0;
|
}
|
|
static int uvc_register_video(struct uvc_device *dev,
|
struct uvc_streaming *stream)
|
{
|
int ret;
|
|
/* Initialize the streaming interface with default parameters. */
|
ret = uvc_video_init(stream);
|
if (ret < 0) {
|
uvc_printk(KERN_ERR, "Failed to initialize the device (%d).\n",
|
ret);
|
return ret;
|
}
|
|
if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
|
| V4L2_CAP_META_CAPTURE;
|
else
|
stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
|
|
uvc_debugfs_init_stream(stream);
|
|
/* Register the device with V4L. */
|
return uvc_register_video_device(dev, stream, &stream->vdev,
|
&stream->queue, stream->type,
|
&uvc_fops, &uvc_ioctl_ops);
|
}
|
|
/*
|
* 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;
|
|
/* Register a metadata node, but ignore a possible failure,
|
* complete registration of video nodes anyway.
|
*/
|
uvc_meta_register(stream);
|
|
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 entities (%d).\n", ret);
|
#endif
|
}
|
|
return 0;
|
}
|
|
/* ------------------------------------------------------------------------
|
* USB probe, disconnect, suspend and resume
|
*/
|
|
static const struct uvc_device_info uvc_quirk_none = { 0 };
|
|
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;
|
const struct uvc_device_info *info =
|
(const struct uvc_device_info *)id->driver_info;
|
int function;
|
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. */
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
if (dev == NULL)
|
return -ENOMEM;
|
|
INIT_LIST_HEAD(&dev->entities);
|
INIT_LIST_HEAD(&dev->chains);
|
INIT_LIST_HEAD(&dev->streams);
|
kref_init(&dev->ref);
|
atomic_set(&dev->nmappings, 0);
|
mutex_init(&dev->lock);
|
|
dev->udev = usb_get_dev(udev);
|
dev->intf = usb_get_intf(intf);
|
dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
|
dev->info = info ? info : &uvc_quirk_none;
|
dev->quirks = uvc_quirks_param == -1
|
? dev->info->quirks : uvc_quirks_param;
|
|
if (udev->product != NULL)
|
strscpy(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));
|
|
/*
|
* Add iFunction or iInterface to names when available as additional
|
* distinguishers between interfaces. iFunction is prioritized over
|
* iInterface which matches Windows behavior at the point of writing.
|
*/
|
if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
|
function = intf->intf_assoc->iFunction;
|
else
|
function = intf->cur_altsetting->desc.iInterface;
|
if (function != 0) {
|
size_t len;
|
|
strlcat(dev->name, ": ", sizeof(dev->name));
|
len = strlen(dev->name);
|
usb_string(udev, function, dev->name + len,
|
sizeof(dev->name) - len);
|
}
|
|
/* Initialize the media device. */
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
dev->mdev.dev = &intf->dev;
|
strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
|
if (udev->serial)
|
strscpy(dev->mdev.serial, udev->serial,
|
sizeof(dev->mdev.serial));
|
usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
|
dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
|
media_device_init(&dev->mdev);
|
|
dev->vdev.mdev = &dev->mdev;
|
#endif
|
|
/* 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 != dev->info->quirks) {
|
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 V4L2 device. */
|
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;
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
/* Register the media device node */
|
if (media_device_register(&dev->mdev) < 0)
|
goto error;
|
#endif
|
/* 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");
|
if (udev->quirks & USB_QUIRK_AUTO_SUSPEND ||
|
udev->parent->quirks & USB_QUIRK_AUTO_SUSPEND)
|
uvc_printk(KERN_INFO, "auto-suspend is blacklisted for this device\n");
|
else
|
usb_enable_autosuspend(udev);
|
return 0;
|
|
error:
|
uvc_unregister_video(dev);
|
kref_put(&dev->ref, uvc_delete);
|
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;
|
|
uvc_unregister_video(dev);
|
kref_put(&dev->ref, uvc_delete);
|
}
|
|
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) {
|
mutex_lock(&dev->lock);
|
if (dev->users)
|
uvc_status_stop(dev);
|
mutex_unlock(&dev->lock);
|
return 0;
|
}
|
|
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;
|
int ret = 0;
|
|
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) {
|
ret = uvc_ctrl_restore_values(dev);
|
if (ret < 0)
|
return ret;
|
}
|
|
mutex_lock(&dev->lock);
|
if (dev->users)
|
ret = uvc_status_start(dev, GFP_NOIO);
|
mutex_unlock(&dev->lock);
|
|
return ret;
|
}
|
|
list_for_each_entry(stream, &dev->streams, list) {
|
if (stream->intf == intf) {
|
ret = uvc_video_resume(stream, reset);
|
if (ret < 0)
|
uvc_queue_streamoff(&stream->queue,
|
stream->queue.queue.type);
|
return ret;
|
}
|
}
|
|
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, const 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, const 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(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR);
|
MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
|
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
|
*/
|
|
static const struct uvc_device_info uvc_quirk_probe_minmax = {
|
.quirks = UVC_QUIRK_PROBE_MINMAX,
|
};
|
|
static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
|
.quirks = UVC_QUIRK_FIX_BANDWIDTH,
|
};
|
|
static const struct uvc_device_info uvc_quirk_probe_def = {
|
.quirks = UVC_QUIRK_PROBE_DEF,
|
};
|
|
static const struct uvc_device_info uvc_quirk_stream_no_fid = {
|
.quirks = UVC_QUIRK_STREAM_NO_FID,
|
};
|
|
static const struct uvc_device_info uvc_quirk_force_y8 = {
|
.quirks = UVC_QUIRK_FORCE_Y8,
|
};
|
|
#define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
|
#define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
|
{.meta_format = m}
|
|
/*
|
* 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 const 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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&uvc_quirk_probe_minmax },
|
/* Microsoft Lifecam NX-3000 */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x045e,
|
.idProduct = 0x0721,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
|
/* 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 = (kernel_ulong_t)&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 },
|
/* Logitech HD Pro Webcam C920 */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x046d,
|
.idProduct = 0x082d,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
|
/* 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_INFO_QUIRK(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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&uvc_quirk_probe_def },
|
/* Dell SP2008WFP Monitor */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x05a9,
|
.idProduct = 0x2641,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
|
/* Dell Alienware X51 */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x05a9,
|
.idProduct = 0x2643,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
|
/* Dell Studio Hybrid 140g (OmniVision webcam) */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x05a9,
|
.idProduct = 0x264a,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
|
/* Dell XPS M1330 (OmniVision OV7670 webcam) */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x05a9,
|
.idProduct = 0x7670,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&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_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
|
| UVC_QUIRK_BUILTIN_ISIGHT) },
|
/* Apple Built-In iSight via iBridge */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x05ac,
|
.idProduct = 0x8600,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
|
/* 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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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_INFO_QUIRK(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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
|
| UVC_QUIRK_PROBE_EXTRAFIELDS) },
|
/* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x1871,
|
.idProduct = 0x0516,
|
.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0 },
|
/* 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_INFO_QUIRK(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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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 = (kernel_ulong_t)&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_INFO_QUIRK(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 = (kernel_ulong_t)&uvc_quirk_probe_minmax },
|
/* Generalplus Technology Inc. 808 Camera */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x1b3f,
|
.idProduct = 0x2002,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&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_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
|
| UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
|
/* Oculus VR Positional Tracker DK2 */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x2833,
|
.idProduct = 0x0201,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
|
/* Oculus VR Rift Sensor */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x2833,
|
.idProduct = 0x0211,
|
.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
|
/* GEO Semiconductor GC6500 */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x29fe,
|
.idProduct = 0x4d53,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
|
/* Intel RealSense D4M */
|
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
|
| USB_DEVICE_ID_MATCH_INT_INFO,
|
.idVendor = 0x8086,
|
.idProduct = 0x0b03,
|
.bInterfaceClass = USB_CLASS_VIDEO,
|
.bInterfaceSubClass = 1,
|
.bInterfaceProtocol = 0,
|
.driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
|
/* Generic USB Video Class */
|
{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
|
{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
|
{}
|
};
|
|
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);
|
