uvc_driver.c revision f129b03ba272c86c42ad476684caa0d6109cb383
1c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 2c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * uvc_driver.c -- USB Video Class driver 3c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 42c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * Copyright (C) 2005-2009 5c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Laurent Pinchart (laurent.pinchart@skynet.be) 6c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 7c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * This program is free software; you can redistribute it and/or modify 8c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * it under the terms of the GNU General Public License as published by 9c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * the Free Software Foundation; either version 2 of the License, or 10c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * (at your option) any later version. 11c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 12c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 13c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 15ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart * This driver aims to support video input and ouput devices compliant with the 16ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart * 'USB Video Class' specification. 17c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 18c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The driver doesn't support the deprecated v4l1 interface. It implements the 19c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * mmap capture method only, and doesn't do any image format conversion in 20c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * software. If your user-space application doesn't support YUYV or MJPEG, fix 21c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * it :-). Please note that the MJPEG data have been stripped from their 22c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Huffman tables (DHT marker), you will need to add it back if your JPEG 23c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * codec can't handle MJPEG data. 24c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 25c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 26c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/kernel.h> 27c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/list.h> 28c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/module.h> 295a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 30c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/usb.h> 31c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/videodev2.h> 32c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/vmalloc.h> 33c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/wait.h> 34c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <asm/atomic.h> 359bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich#include <asm/unaligned.h> 36c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 37c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <media/v4l2-common.h> 38c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 39c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include "uvcvideo.h" 40c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 41c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_AUTHOR "Laurent Pinchart <laurent.pinchart@skynet.be>" 42c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_DESC "USB Video Class driver" 43c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#ifndef DRIVER_VERSION 44c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_VERSION "v0.1.0" 45c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#endif 46c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 47310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartunsigned int uvc_clock_param = CLOCK_MONOTONIC; 480fbd8ee6de6ac3d0b93c96da848c5bc3ccc1dc83Laurent Pinchartunsigned int uvc_no_drop_param; 4973de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchartstatic unsigned int uvc_quirks_param = -1; 50c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartunsigned int uvc_trace_param; 51b232a012adfea9f535702e8296ea6b76e691f436Laurent Pinchartunsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; 52c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 53c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 542c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * Video formats 55c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 56c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 57c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_format_desc uvc_fmts[] = { 58c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 59c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:2 (YUYV)", 60c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_YUY2, 61c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YUYV, 62c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 63c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 6468f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz .name = "YUV 4:2:2 (YUYV)", 6568f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, 6668f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz .fcc = V4L2_PIX_FMT_YUYV, 6768f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz }, 6868f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz { 69c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:0 (NV12)", 70c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_NV12, 71c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_NV12, 72c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 73c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 74c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "MJPEG", 75c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_MJPEG, 76c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_MJPEG, 77c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 78c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 79c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YVU 4:2:0 (YV12)", 80c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_YV12, 81c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YVU420, 82c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 83c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 84c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:0 (I420)", 85c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_I420, 86c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YUV420, 87c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 88c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 89c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:2 (UYVY)", 90c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_UYVY, 91c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_UYVY, 92c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 93c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 94c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "Greyscale", 95c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_Y800, 96c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_GREY, 97c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 98c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 99c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "RGB Bayer", 100c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_BY8, 101c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_SBGGR8, 102c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 103c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 104c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 105c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 106c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Utility functions 107c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 108c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 109c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstruct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, 110c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u8 epaddr) 111c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 112c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep; 113c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 114c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 115c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 116c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep = &alts->endpoint[i]; 117c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->desc.bEndpointAddress == epaddr) 118c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ep; 119c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 120c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 121c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 122c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 123c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 124c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) 125c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 126c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int len = ARRAY_SIZE(uvc_fmts); 127c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 128c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 129c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < len; ++i) { 130c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) 131c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return &uvc_fmts[i]; 132c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 133c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 134c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 135c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 136c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 137c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic __u32 uvc_colorspace(const __u8 primaries) 138c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 139c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart static const __u8 colorprimaries[] = { 140c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 0, 141c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SRGB, 142c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_470_SYSTEM_M, 143c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_470_SYSTEM_BG, 144c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SMPTE170M, 145c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SMPTE240M, 146c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }; 147c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 148c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (primaries < ARRAY_SIZE(colorprimaries)) 149c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return colorprimaries[primaries]; 150c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 151c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 152c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 153c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 154c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Simplify a fraction using a simple continued fraction decomposition. The 155c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * idea here is to convert fractions such as 333333/10000000 to 1/30 using 156c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 32 bit arithmetic only. The algorithm is not perfect and relies upon two 157c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * arbitrary parameters to remove non-significative terms from the simple 158c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * continued fraction decomposition. Using 8 and 333 for n_terms and threshold 159c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * respectively seems to give nice results. 160c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 161c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartvoid uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, 162c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int n_terms, unsigned int threshold) 163c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 164c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t *an; 165c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t x, y, r; 166c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n; 167c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 168c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); 169c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (an == NULL) 170c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return; 171c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 172c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Convert the fraction to a simple continued fraction. See 173c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * http://mathforum.org/dr.math/faq/faq.fractions.html 174c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Stop if the current term is bigger than or equal to the given 175c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * threshold. 176c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 177c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = *numerator; 178c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = *denominator; 179c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 180c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (n = 0; n < n_terms && y != 0; ++n) { 181c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart an[n] = x / y; 182c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (an[n] >= threshold) { 183c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (n < 2) 184c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n++; 185c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 186c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 187c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 188c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart r = x - an[n] * y; 189c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = y; 190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = r; 191c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 192c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 193c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Expand the simple continued fraction back to an integer fraction. */ 194c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = 0; 195c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = 1; 196c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 197c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = n; i > 0; --i) { 198c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart r = y; 199c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = an[i-1] * y + x; 200c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = r; 201c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 202c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 203c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *numerator = y; 204c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *denominator = x; 205c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(an); 206c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 207c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 208c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Convert a fraction to a frame interval in 100ns multiples. The idea here is 209c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * to compute numerator / denominator * 10000000 using 32 bit fixed point 210c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * arithmetic only. 211c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 212c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartuint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) 213c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 214c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t multiplier; 215c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 216c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Saturate the result if the operation would overflow. */ 217c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (denominator == 0 || 218c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart numerator/denominator >= ((uint32_t)-1)/10000000) 219c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return (uint32_t)-1; 220c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 221c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Divide both the denominator and the multiplier by two until 222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * numerator * multiplier doesn't overflow. If anyone knows a better 223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * algorithm please let me know. 224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 225c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart multiplier = 10000000; 226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (numerator > ((uint32_t)-1)/multiplier) { 227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart multiplier /= 2; 228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart denominator /= 2; 229c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 231c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return denominator ? numerator * multiplier / denominator : 0; 232c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 233c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 234c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 235c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Terminal and unit management 236c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 237c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 238c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) 239c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 240c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity; 241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 242c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(entity, &dev->entities, list) { 243c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->id == id) 244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 246c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 248c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 249c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 250c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, 251c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int id, struct uvc_entity *entity) 252c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 253c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 254c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 255c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity == NULL) 256c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart entity = list_entry(&dev->entities, struct uvc_entity, list); 257c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 258c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry_continue(entity, &dev->entities, list) { 2598ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart for (i = 0; i < entity->bNrInPins; ++i) 2608ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->baSourceID[i] == id) 261c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 262c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 263c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 264c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 265c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 266c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2678e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) 2688e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 2698e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream; 2708e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 2718e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 2728e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (stream->header.bTerminalLink == id) 2738e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return stream; 2748e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 2758e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 2768e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return NULL; 2778e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 2788e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 279c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 2808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Descriptors parsing 281c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 282c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 283c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_format(struct uvc_device *dev, 284c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_streaming *streaming, struct uvc_format *format, 285c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u32 **intervals, unsigned char *buffer, int buflen) 286c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 287c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf = streaming->intf; 288c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = intf->cur_altsetting; 289c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_format_desc *fmtdesc; 290c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_frame *frame; 291c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *start = buffer; 292c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int interval; 293c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n; 294c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u8 ftype; 295c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 296c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->type = buffer[2]; 297c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->index = buffer[3]; 298c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 299c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 300b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_UNCOMPRESSED: 301b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_FRAME_BASED: 302b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; 303233548a2fd934a0220db8b1521c0bc88c82e5e53Laurent Pinchart if (buflen < n) { 304b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 305c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 306c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 307c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 308c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 309c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 310c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 311c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Find the format descriptor from its GUID. */ 312c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart fmtdesc = uvc_format_by_guid(&buffer[5]); 313c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 314c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (fmtdesc != NULL) { 315d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, fmtdesc->name, 316c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof format->name); 317c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = fmtdesc->fcc; 318c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 31936bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart uvc_printk(KERN_INFO, "Unknown video format %pUl\n", 32036bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart &buffer[5]); 32136bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart snprintf(format->name, sizeof(format->name), "%pUl\n", 32236bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart &buffer[5]); 323c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = 0; 324c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 325c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 326c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = buffer[21]; 327b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { 328b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart ftype = UVC_VS_FRAME_UNCOMPRESSED; 329c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 330b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart ftype = UVC_VS_FRAME_FRAME_BASED; 331c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[27]) 332c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED; 333c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 334c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 335c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 336b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MJPEG: 337c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 11) { 338b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 339c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 340c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 341c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 342c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 343c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 344c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 345d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "MJPEG", sizeof format->name); 346c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = V4L2_PIX_FMT_MJPEG; 347c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED; 348c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = 0; 349b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart ftype = UVC_VS_FRAME_MJPEG; 350c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 351c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 352b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_DV: 353c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 9) { 354b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 355c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 356c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 357c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 358c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 359c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 360c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 361c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[8] & 0x7f) { 362c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 0: 363d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "SD-DV", sizeof format->name); 364c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 365c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 1: 366d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "SDL-DV", sizeof format->name); 367c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 368c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 2: 369d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "HD-DV", sizeof format->name); 370c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 371c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 372b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 373c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d: unknown DV format %u\n", 374c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 375c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, buffer[8]); 376c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 377c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 378c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 379d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", 380c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof format->name); 381c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 382c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = V4L2_PIX_FMT_DV; 383c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 384c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = 0; 385c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ftype = 0; 386c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 387c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Create a dummy frame descriptor. */ 388c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame = &format->frame[0]; 389c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memset(&format->frame[0], 0, sizeof format->frame[0]); 390c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIntervalType = 1; 391c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 1; 392c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwFrameInterval = *intervals; 393c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *(*intervals)++ = 1; 394c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->nframes = 1; 395c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 396c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 397b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MPEG2TS: 398b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_STREAM_BASED: 399c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Not supported yet. */ 400c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 401b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 402c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d unsupported format %u\n", 403c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber, 404c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[2]); 405c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 406c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 407c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 408c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); 409c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 410c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 411c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 412c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 413c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the frame descriptors. Only uncompressed, MJPEG and frame 414c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * based formats have frame descriptors. 415c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 416c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 417c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart buffer[2] == ftype) { 418078f8947926732a526fb280c0f3a8920bf173b9cLaurent Pinchart frame = &format->frame[format->nframes]; 419b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (ftype != UVC_VS_FRAME_FRAME_BASED) 420c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen > 25 ? buffer[25] : 0; 421c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 422c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen > 21 ? buffer[21] : 0; 423c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 424c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = n ? n : 3; 425c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 426c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 26 + 4*n) { 427b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 428c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FRAME error\n", dev->udev->devnum, 429c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 430c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 431c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 432c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 433c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIndex = buffer[3]; 434c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bmCapabilities = buffer[4]; 4359bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->wWidth = get_unaligned_le16(&buffer[5]); 4369bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->wHeight = get_unaligned_le16(&buffer[7]); 4379bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); 4389bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); 439b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (ftype != UVC_VS_FRAME_FRAME_BASED) { 440c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwMaxVideoFrameBufferSize = 4419bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le32(&buffer[17]); 442c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 4439bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le32(&buffer[21]); 444c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIntervalType = buffer[25]; 445c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 446c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwMaxVideoFrameBufferSize = 0; 447c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 4489bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le32(&buffer[17]); 449c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIntervalType = buffer[21]; 450c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 451c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwFrameInterval = *intervals; 452c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 453c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize 454c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * completely. Observed behaviours range from setting the 4552c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * value to 1.1x the actual frame size to hardwiring the 456c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 16 low bits to 0. This results in a higher than necessary 457c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * memory usage as well as a wrong image size information. For 458c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * uncompressed formats this can be fixed by computing the 459c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * value from the frame size. 460c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 461c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) 462c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwMaxVideoFrameBufferSize = format->bpp 463c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * frame->wWidth * frame->wHeight / 8; 464c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 465c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Some bogus devices report dwMinFrameInterval equal to 466c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * dwMaxFrameInterval and have dwFrameIntervalStep set to 467c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * zero. Setting all null intervals to 1 fixes the problem and 4682c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * some other divisions by zero that could happen. 469c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 470c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < n; ++i) { 4719bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich interval = get_unaligned_le32(&buffer[26+4*i]); 472c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *(*intervals)++ = interval ? interval : 1; 473c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 474c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 475c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure that the default frame interval stays between 476c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * the boundaries. 477c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 478c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n -= frame->bFrameIntervalType ? 1 : 2; 479c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 480c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart min(frame->dwFrameInterval[n], 481c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart max(frame->dwFrameInterval[0], 482c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval)); 483c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 484c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", 485c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->wWidth, frame->wHeight, 486c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10000000/frame->dwDefaultFrameInterval, 487c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart (100000000/frame->dwDefaultFrameInterval)%10); 488c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 489078f8947926732a526fb280c0f3a8920bf173b9cLaurent Pinchart format->nframes++; 490c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 491c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 492c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 493c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 494c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 495c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { 496c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 497c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 498c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 499c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 500c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 501c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart buffer[2] == UVC_VS_COLORFORMAT) { 502c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 6) { 503b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 504c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d COLORFORMAT error\n", 505c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 506c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 507c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 508c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 509c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 510c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->colorspace = uvc_colorspace(buffer[3]); 511c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 512c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 513c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 514c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 515c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 516c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return buffer - start; 517c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 518c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 519c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_streaming(struct uvc_device *dev, 520c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf) 521c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 522c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_streaming *streaming = NULL; 523c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_format *format; 524c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_frame *frame; 525c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = &intf->altsetting[0]; 526c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned char *_buffer, *buffer = alts->extra; 527c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int _buflen, buflen = alts->extralen; 528c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int nformats = 0, nframes = 0, nintervals = 0; 529c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int size, i, n, p; 530c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u32 *interval; 531c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u16 psize; 532c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret = -EINVAL; 533c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 534c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass 535b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart != UVC_SC_VIDEOSTREAMING) { 536c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " 537c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "video streaming interface\n", dev->udev->devnum, 538c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->altsetting[0].desc.bInterfaceNumber); 539c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 540c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 541c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 542c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 543c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " 544c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "claimed\n", dev->udev->devnum, 545c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->altsetting[0].desc.bInterfaceNumber); 546c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 547c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 548c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 549c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming = kzalloc(sizeof *streaming, GFP_KERNEL); 550c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (streaming == NULL) { 551c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_driver_release_interface(&uvc_driver.driver, intf); 552c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 553c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 554c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 555c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&streaming->mutex); 55635f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart streaming->dev = dev; 557c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->intf = usb_get_intf(intf); 558c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 559c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 560c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* The Pico iMage webcam has its class-specific interface descriptors 561c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * after the endpoint descriptors. 562c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 563c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen == 0) { 564c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 565c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep = &alts->endpoint[i]; 566c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 567c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->extralen == 0) 568c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 569c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 570c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->extralen > 2 && 571c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep->extra[1] == USB_DT_CS_INTERFACE) { 572c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "trying extra data " 573c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "from endpoint %u.\n", i); 574c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer = alts->endpoint[i].extra; 575c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen = alts->endpoint[i].extralen; 576c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 577c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 578c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 579c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 580c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 581c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Skip the standard interface descriptors. */ 582c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 583c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 584c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 585c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 586c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 587c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen <= 2) { 588c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " 589c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface descriptors found.\n"); 590c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 591c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 592c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 593c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the header descriptor. */ 594ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart switch (buffer[2]) { 595b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_OUTPUT_HEADER: 596ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 597ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart size = 9; 598ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 599ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 600b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_INPUT_HEADER: 601ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 602ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart size = 13; 603ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 604ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 605ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart default: 606c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 607ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "%d HEADER descriptor not found.\n", dev->udev->devnum, 608ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart alts->desc.bInterfaceNumber); 609c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 610ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 611c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 612ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart p = buflen >= 4 ? buffer[3] : 0; 613ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart n = buflen >= size ? buffer[size-1] : 0; 614ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 615ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (buflen < size + p*n) { 616ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 617ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "interface %d HEADER descriptor is invalid.\n", 618ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber); 619ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart goto error; 620ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 621c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 622ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bNumFormats = p; 623ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bEndpointAddress = buffer[6]; 624b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (buffer[2] == UVC_VS_INPUT_HEADER) { 625c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bmInfo = buffer[7]; 626c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTerminalLink = buffer[8]; 627c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bStillCaptureMethod = buffer[9]; 628c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTriggerSupport = buffer[10]; 629c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTriggerUsage = buffer[11]; 630c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 631ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bTerminalLink = buffer[7]; 632ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 633ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bControlSize = n; 634ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 635ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL); 636ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (streaming->header.bmaControls == NULL) { 637ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart ret = -ENOMEM; 638c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 639c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 640c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 641ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart memcpy(streaming->header.bmaControls, &buffer[size], p*n); 642ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 643c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 644c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 645c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 646c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buffer = buffer; 647c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buflen = buflen; 648c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 649c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Count the format and frame descriptors. */ 650042e143e8b21dca7c84e32c2e647980cb9101224Laurent Pinchart while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { 651c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (_buffer[2]) { 652b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_UNCOMPRESSED: 653b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MJPEG: 654b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_FRAME_BASED: 655c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nformats++; 656c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 657c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 658b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_DV: 659c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* DV format has no frame descriptor. We will create a 660c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * dummy frame descriptor with a dummy frame interval. 661c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 662c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nformats++; 663c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 664c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals++; 665c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 666c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 667b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MPEG2TS: 668b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_STREAM_BASED: 669c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 670c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT %u is not supported.\n", 671c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 672c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, _buffer[2]); 673c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 674c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 675b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FRAME_UNCOMPRESSED: 676b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FRAME_MJPEG: 677c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 678c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (_buflen > 25) 679c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals += _buffer[25] ? _buffer[25] : 3; 680c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 681c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 682b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FRAME_FRAME_BASED: 683c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 684c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (_buflen > 21) 685c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals += _buffer[21] ? _buffer[21] : 3; 686c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 687c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 688c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 689c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buflen -= _buffer[0]; 690c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buffer += _buffer[0]; 691c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 692c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 693c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (nformats == 0) { 694c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 695c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "%d has no supported formats defined.\n", 696c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber); 697c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 698c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 699c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 700c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart size = nformats * sizeof *format + nframes * sizeof *frame 701c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart + nintervals * sizeof *interval; 702c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format = kzalloc(size, GFP_KERNEL); 703c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (format == NULL) { 704c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ret = -ENOMEM; 705c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 706c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 707c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 708c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame = (struct uvc_frame *)&format[nformats]; 709c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart interval = (__u32 *)&frame[nframes]; 710c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 711c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->format = format; 712c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->nformats = nformats; 713c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 714c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the format descriptors. */ 715042e143e8b21dca7c84e32c2e647980cb9101224Laurent Pinchart while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { 716c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 717b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_UNCOMPRESSED: 718b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MJPEG: 719b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_DV: 720b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_FRAME_BASED: 721c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->frame = frame; 722c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ret = uvc_parse_format(dev, streaming, format, 723c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart &interval, buffer, buflen); 724c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ret < 0) 725c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 726c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 727c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame += format->nframes; 728c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format++; 729c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 730c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= ret; 731c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += ret; 732c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 733c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 734c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 735c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 736c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 737c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 738c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 739c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 740c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 741c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 742c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart if (buflen) 743c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 744c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart "%d has %u bytes of trailing descriptor garbage.\n", 745c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); 746c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart 747c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the alternate settings to find the maximum bandwidth. */ 748c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < intf->num_altsetting; ++i) { 749c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep; 750c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts = &intf->altsetting[i]; 751c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep = uvc_find_endpoint(alts, 752c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bEndpointAddress); 753c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep == NULL) 754c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 755c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 756c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart psize = le16_to_cpu(ep->desc.wMaxPacketSize); 757c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); 758c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (psize > streaming->maxpsize) 759c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->maxpsize = psize; 760c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 761c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 76235f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart list_add_tail(&streaming->list, &dev->streams); 763c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 764c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 765c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pincharterror: 766c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_driver_release_interface(&uvc_driver.driver, intf); 767c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_put_intf(intf); 768c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->format); 769c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->header.bmaControls); 770c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming); 771c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ret; 772c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 773c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 7748ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchartstatic struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, 7758ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unsigned int num_pads, unsigned int extra_size) 7768ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart{ 7778ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart struct uvc_entity *entity; 7788ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unsigned int num_inputs; 7798ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unsigned int size; 7808ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7818ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; 7828ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart size = sizeof(*entity) + extra_size + num_inputs; 7838ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity = kzalloc(size, GFP_KERNEL); 7848ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity == NULL) 7858ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart return NULL; 7868ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7878ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->id = id; 7888ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->type = type; 7898ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7908ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->bNrInPins = num_inputs; 7918ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->baSourceID = ((__u8 *)entity) + sizeof(*entity) + extra_size; 7928ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7938ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart return entity; 7948ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart} 7958ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 796c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Parse vendor-specific extensions. */ 797c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_vendor_control(struct uvc_device *dev, 798c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *buffer, int buflen) 799c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 800c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = dev->udev; 801c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 802c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *unit; 803c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int n, p; 804c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int handled = 0; 805c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 806c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 807c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 0x046d: /* Logitech */ 808c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[1] != 0x41 || buffer[2] != 0x01) 809c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 810c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 811c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech implements several vendor specific functions 812c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * through vendor specific extension units (LXU). 813c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 814c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The LXU descriptors are similar to XU descriptors 815c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * (see "USB Device Video Class for Video Devices", section 816c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 3.7.2.6 "Extension Unit Descriptor") with the following 817c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * differences: 818c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 819c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 820c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 0 bLength 1 Number 821c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Size of this descriptor, in bytes: 24+p+n*2 822c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 823c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 23+p+n bmControlsType N Bitmap 824c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Individual bits in the set are defined: 825c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 0: Absolute 826c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1: Relative 827c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 828c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * This bitset is mapped exactly the same as bmControls. 829c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 830c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 23+p+n*2 bReserved 1 Boolean 831c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 832c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 24+p+n*2 iExtension 1 Index 833c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Index of a string descriptor that describes this 834c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * extension unit. 835c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 836c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 837c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 22 ? buffer[21] : 0; 838c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 25 + p ? buffer[22+p] : 0; 839c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 840c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 25 + p + 2*n) { 841c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 842c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d EXTENSION_UNIT error\n", 843c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 844c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 845c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 846c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 8478ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], 8488ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart p + 1, 2*n); 849c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 850c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 851c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 852c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 853c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bNumControls = buffer[20]; 8548ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[22], p); 855c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bControlSize = buffer[22+p]; 8568ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); 8578ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) 8588ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart + n; 859c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 860c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 861c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[24+p+2*n] != 0) 862c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[24+p+2*n], unit->name, 863c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 864c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 865c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Extension %u", buffer[3]); 866c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 867c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 868c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart handled = 1; 869c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 870c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 871c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 872c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return handled; 873c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 874c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 875c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_standard_control(struct uvc_device *dev, 876c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *buffer, int buflen) 877c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 878c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = dev->udev; 879c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *unit, *term; 880c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf; 881c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 882c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n, p, len; 883c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u16 type; 884c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 885c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 886b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_HEADER: 887c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 12 ? buffer[11] : 0; 888c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 889c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 12 || buflen < 12 + n) { 890c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 891c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d HEADER error\n", udev->devnum, 892c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 893c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 894c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 895c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 8969bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich dev->uvc_version = get_unaligned_le16(&buffer[3]); 8979bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich dev->clock_frequency = get_unaligned_le32(&buffer[7]); 898c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 899c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse all USB Video Streaming interfaces. */ 900c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < n; ++i) { 901c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf = usb_ifnum_to_if(udev, buffer[12+i]); 902c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf == NULL) { 903c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d " 904c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d doesn't exists\n", 905c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, i); 906c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 907c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 908c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 909c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_parse_streaming(dev, intf); 910c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 911c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 912c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 913b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_INPUT_TERMINAL: 914c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 8) { 915c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 916c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL error\n", 917c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 918c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 919c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 920c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 921c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure the terminal type MSB is not null, otherwise it 922c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * could be confused with a unit. 923c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 9249bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich type = get_unaligned_le16(&buffer[4]); 925c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((type & 0xff00) == 0) { 926c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 927c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL %d has invalid " 928c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "type 0x%04x, skipping\n", udev->devnum, 929c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, 930c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[3], type); 931c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 932c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 933c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 934c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = 0; 935c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = 0; 936c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 8; 937c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 938b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (type == UVC_ITT_CAMERA) { 939c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 15 ? buffer[14] : 0; 940c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 15; 941c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 942b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 943c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 9 ? buffer[8] : 0; 944c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 10 + n ? buffer[9+n] : 0; 945c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 10; 946c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 947c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 948c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < len + n + p) { 949c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 950c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL error\n", 951c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 952c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 953c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 954c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 9558ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], 9568ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 1, n + p); 957c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL) 958c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 959c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 960b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 961c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.bControlSize = n; 962c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.bmControls = (__u8 *)term + sizeof *term; 963c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wObjectiveFocalLengthMin = 9649bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[8]); 965c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wObjectiveFocalLengthMax = 9669bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[10]); 967c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wOcularFocalLength = 9689bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[12]); 969c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->camera.bmControls, &buffer[15], n); 970b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart } else if (UVC_ENTITY_TYPE(term) == 971b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_ITT_MEDIA_TRANSPORT_INPUT) { 972c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bControlSize = n; 973c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bmControls = (__u8 *)term + sizeof *term; 974c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bTransportModeSize = p; 975c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bmTransportModes = (__u8 *)term 976c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart + sizeof *term + n; 977c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->media.bmControls, &buffer[9], n); 978c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->media.bmTransportModes, &buffer[10+n], p); 979c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 980c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 981c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[7] != 0) 982c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[7], term->name, 983c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof term->name); 984b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 985c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Camera %u", buffer[3]); 986b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 987c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Media %u", buffer[3]); 988c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 989c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Input %u", buffer[3]); 990c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 991c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&term->list, &dev->entities); 992c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 993c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 994b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_OUTPUT_TERMINAL: 995c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 9) { 996c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 997c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d OUTPUT_TERMINAL error\n", 998c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 999c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1000c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1001c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1002c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure the terminal type MSB is not null, otherwise it 1003c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * could be confused with a unit. 1004c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 10059bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich type = get_unaligned_le16(&buffer[4]); 1006c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((type & 0xff00) == 0) { 1007c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1008c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d OUTPUT_TERMINAL %d has invalid " 1009c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "type 0x%04x, skipping\n", udev->devnum, 1010c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, buffer[3], type); 1011c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1012c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1013c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10148ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], 10158ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 1, 0); 1016c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL) 1017c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1018c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10198ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(term->baSourceID, &buffer[7], 1); 1020c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1021c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[8] != 0) 1022c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[8], term->name, 1023c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof term->name); 1024c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1025c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Output %u", buffer[3]); 1026c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1027c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&term->list, &dev->entities); 1028c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1029c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1030b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_SELECTOR_UNIT: 1031c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 5 ? buffer[4] : 0; 1032c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1033c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 5 || buflen < 6 + p) { 1034c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1035c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d SELECTOR_UNIT error\n", 1036c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1037c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1038c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1039c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10408ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); 1041c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1042c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1043c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10448ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[5], p); 1045c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1046c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[5+p] != 0) 1047c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[5+p], unit->name, 1048c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1049c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1050c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Selector %u", buffer[3]); 1051c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1052c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1053c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1054c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1055b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_PROCESSING_UNIT: 1056c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 8 ? buffer[7] : 0; 1057c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = dev->uvc_version >= 0x0110 ? 10 : 9; 1058c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1059c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < p + n) { 1060c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1061c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d PROCESSING_UNIT error\n", 1062c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1063c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1064c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1065c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10668ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); 1067c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1068c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1069c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10708ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[4], 1); 1071c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.wMaxMultiplier = 10729bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[5]); 1073c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bControlSize = buffer[7]; 1074c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bmControls = (__u8 *)unit + sizeof *unit; 1075c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->processing.bmControls, &buffer[8], n); 1076c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (dev->uvc_version >= 0x0110) 1077c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bmVideoStandards = buffer[9+n]; 1078c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1079c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[8+n] != 0) 1080c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[8+n], unit->name, 1081c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1082c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1083c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Processing %u", buffer[3]); 1084c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1085c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1086c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1087c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1088b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_EXTENSION_UNIT: 1089c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 22 ? buffer[21] : 0; 1090c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 24 + p ? buffer[22+p] : 0; 1091c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1092c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 24 + p + n) { 1093c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1094c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d EXTENSION_UNIT error\n", 1095c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1096c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1097c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1098c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10998ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); 1100c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1101c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1102c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1103c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 1104c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bNumControls = buffer[20]; 11058ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[22], p); 1106c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bControlSize = buffer[22+p]; 11078ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit->extension.bmControls = (__u8 *)unit + sizeof *unit; 1108c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.bmControls, &buffer[23+p], n); 1109c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1110c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[23+p+n] != 0) 1111c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[23+p+n], unit->name, 1112c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1113c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1114c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Extension %u", buffer[3]); 1115c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1116c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1117c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1118c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1119c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 1120c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " 1121c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "descriptor (%u)\n", buffer[2]); 1122c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1123c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1124c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1125c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1126c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1127c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1128c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_control(struct uvc_device *dev) 1129c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1130c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 1131c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned char *buffer = alts->extra; 1132c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int buflen = alts->extralen; 1133c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret; 1134c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1135c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the default alternate setting only, as the UVC specification 1136c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * defines a single alternate setting, the default alternate setting 1137c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * zero. 1138c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1139c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1140c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2) { 1141c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_parse_vendor_control(dev, buffer, buflen) || 1142c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[1] != USB_DT_CS_INTERFACE) 1143c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto next_descriptor; 1144c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1145c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) 1146c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ret; 1147c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1148c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartnext_descriptor: 1149c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 1150c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 1151c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1152c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1153538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart /* Check if the optional status endpoint is present. Built-in iSight 1154538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * webcams have an interrupt endpoint but spit proprietary data that 1155538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * don't conform to the UVC status endpoint messages. Don't try to 1156538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * handle the interrupt endpoint for those cameras. 1157538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart */ 1158538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart if (alts->desc.bNumEndpoints == 1 && 1159538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1160c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep = &alts->endpoint[0]; 1161c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_endpoint_descriptor *desc = &ep->desc; 1162c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1163c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (usb_endpoint_is_int_in(desc) && 1164c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1165c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart desc->bInterval != 0) { 1166c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " 1167c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "(addr %02x).\n", desc->bEndpointAddress); 1168c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->int_ep = ep; 1169c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1170c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1171c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1172c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1173c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1174c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1175c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 11768e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * UVC device scan 1177c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1178c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1179c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1180c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1181c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * and containing the following units: 1182c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 11838e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * - one or more Output Terminals (USB Streaming or Display) 1184c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero or one Processing Unit 11858e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * - zero, one or more single-input Selector Units 1186c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero or one multiple-input Selector Units, provided all inputs are 1187c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * connected to input terminals 1188c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero, one or mode single-input Extension Units 11892c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * - one or more Input Terminals (Camera, External or USB Streaming) 1190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 11918e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * The terminal and units must match on of the following structures: 11928e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * 11938e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 11948e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 11958e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 11968e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * 11978e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * +---------+ +---------+ -> OTT_*(0) 11988e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 11998e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * +---------+ +---------+ -> OTT_*(n) 12008e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * 12018e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * The Processing Unit and Extension Units can be in any order. Additional 12028e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Extension Units connected to the main chain as single-unit branches are 12038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * also supported. Single-input Selector Units are ignored. 1204c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 12058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1206c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity) 1207c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1208c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (UVC_ENTITY_TYPE(entity)) { 1209b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_EXTENSION_UNIT: 1210c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1211c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- XU %d", entity->id); 1212c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12138ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->bNrInPins != 1) { 1214c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " 1215c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "than 1 input pin.\n", entity->id); 1216c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1217c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1218c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1219c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1220c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1221b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_PROCESSING_UNIT: 1222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- PU %d", entity->id); 1224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (chain->processing != NULL) { 1226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found multiple " 1227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "Processing Units in chain.\n"); 1228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1229c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12318e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->processing = entity; 1232c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1233c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1234b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_SELECTOR_UNIT: 1235c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1236c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- SU %d", entity->id); 1237c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1238c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Single-input selector units are ignored. */ 12398ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->bNrInPins == 1) 1240c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12428e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (chain->selector != NULL) { 1243c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " 1244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "Units in chain.\n"); 1245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1246c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12488e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->selector = entity; 1249c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1250c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1251b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_ITT_VENDOR_SPECIFIC: 1252b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_ITT_CAMERA: 1253b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1254c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1255c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- IT %d\n", entity->id); 1256c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1257c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1258c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1259b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_TT_STREAMING: 12604057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (UVC_ENTITY_IS_ITERM(entity)) { 12614057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 12624057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart printk(" <- IT %d\n", entity->id); 12634057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart } else { 12644057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 12654057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart printk(" OT %d", entity->id); 1266ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 1267ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1268ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 1269ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1270c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 1271c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " 1272c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); 1273c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1274c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1275c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12766241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&entity->chain, &chain->entities); 1277c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1278c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1279c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1281c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity, struct uvc_entity *prev) 1282c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1283c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *forward; 1284c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int found; 1285c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1286c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Forward scan */ 1287c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward = NULL; 1288c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart found = 0; 1289c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1290c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (1) { 12918e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart forward = uvc_entity_by_reference(chain->dev, entity->id, 1292c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward); 1293c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (forward == NULL) 1294c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 12958e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (forward == prev) 1296c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1297c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12988e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart switch (UVC_ENTITY_TYPE(forward)) { 12998e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_VC_EXTENSION_UNIT: 13008ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (forward->bNrInPins != 1) { 13018e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " 13028e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "has more than 1 input pin.\n", 13038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart entity->id); 13048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 13058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 1306c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13076241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&forward->chain, &chain->entities); 13088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) { 13098e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (!found) 13108e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" (->"); 13118e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 13128e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" XU %d", forward->id); 13138e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart found = 1; 13148e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 13158e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart break; 13168e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 13178e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_OTT_VENDOR_SPECIFIC: 13188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_OTT_DISPLAY: 13198e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 13208e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_TT_STREAMING: 13218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (UVC_ENTITY_IS_ITERM(forward)) { 13228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Unsupported input " 13238e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "terminal %u.\n", forward->id); 13248e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 13258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 1326c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13276241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&forward->chain, &chain->entities); 13288e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) { 13298e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (!found) 13308e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" (->"); 13318e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 13328e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" OT %d", forward->id); 13338e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart found = 1; 13348e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 13358e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart break; 1336c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1337c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1338c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (found) 1339c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(")"); 1340c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1341c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1342c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1343c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13448e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain_backward(struct uvc_video_chain *chain, 13454057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart struct uvc_entity **_entity) 1346c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 13474057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart struct uvc_entity *entity = *_entity; 1348c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *term; 13494057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart int id = -EINVAL, i; 1350c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1351c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (UVC_ENTITY_TYPE(entity)) { 1352b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_EXTENSION_UNIT: 1353b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_PROCESSING_UNIT: 13548ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = entity->baSourceID[0]; 1355c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1356c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1357b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_SELECTOR_UNIT: 1358c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Single-input selector units are ignored. */ 13598ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->bNrInPins == 1) { 13608ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = entity->baSourceID[0]; 1361c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1362c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1363c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1364c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1365c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- IT"); 1366c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13678e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->selector = entity; 13688ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart for (i = 0; i < entity->bNrInPins; ++i) { 13698ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = entity->baSourceID[i]; 13708e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart term = uvc_entity_by_id(chain->dev, id); 1371c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1372c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " 1373c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "input %d isn't connected to an " 1374c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "input terminal\n", entity->id, i); 1375c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1376c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1377c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1378c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1379c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" %d", term->id); 1380c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13816241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&term->chain, &chain->entities); 13828e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_scan_chain_forward(chain, term, entity); 1383c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1384c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1385c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1386c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk("\n"); 1387c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1388c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = 0; 1389c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 13904057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart 13914057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_ITT_VENDOR_SPECIFIC: 13924057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_ITT_CAMERA: 13934057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_ITT_MEDIA_TRANSPORT_INPUT: 13944057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_OTT_VENDOR_SPECIFIC: 13954057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_OTT_DISPLAY: 13964057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 13974057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_TT_STREAMING: 13988ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 13994057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart break; 1400c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1401c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14024057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (id <= 0) { 14034057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart *_entity = NULL; 14044057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return id; 14054057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart } 14064057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart 14074057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart entity = uvc_entity_by_id(chain->dev, id); 14084057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (entity == NULL) { 14094057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found reference to " 14104057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart "unknown entity %d.\n", id); 14114057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return -EINVAL; 14124057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart } 14134057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart 14144057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart *_entity = entity; 14154057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return 0; 1416c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1417c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain(struct uvc_video_chain *chain, 14194057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart struct uvc_entity *term) 1420c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1421c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity, *prev; 1422c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14234057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); 1424ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 14254057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart entity = term; 14264057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart prev = NULL; 14278e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14284057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart while (entity != NULL) { 14294057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart /* Entity must not be part of an existing chain */ 14308e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (entity->chain.next || entity->chain.prev) { 14318e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found reference to " 14324057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart "entity %d already in chain.\n", entity->id); 14338e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 1434c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1435c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1436c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Process entity */ 14378e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_scan_chain_entity(chain, entity) < 0) 14388e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 1439c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1440c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Forward scan */ 14418e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_scan_chain_forward(chain, entity, prev) < 0) 14428e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 1443c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1444c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Backward scan */ 14454057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart prev = entity; 14464057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (uvc_scan_chain_backward(chain, &entity) < 0) 14474057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return -EINVAL; 1448c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1449c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14508e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 14518e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 14528e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14536241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchartstatic unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 14546241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart char *buffer) 14558e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 14568e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_entity *term; 14578e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart unsigned int nterms = 0; 14588e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart char *p = buffer; 14598e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14608e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(term, terms, chain) { 14616241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart if (!UVC_ENTITY_IS_TERM(term) || 14626241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart UVC_TERM_DIRECTION(term) != dir) 14636241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart continue; 14646241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart 14656241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart if (nterms) 14668e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart p += sprintf(p, ","); 14676241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart if (++nterms >= 4) { 14686241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart p += sprintf(p, "..."); 14696241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart break; 14708e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 14716241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart p += sprintf(p, "%u", term->id); 1472ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 1473c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14748e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return p - buffer; 14758e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 14768e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14778e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic const char *uvc_print_chain(struct uvc_video_chain *chain) 14788e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 14798e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart static char buffer[43]; 14808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart char *p = buffer; 14818e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14826241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 14838e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart p += sprintf(p, " -> "); 14846241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 14858e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14868e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return buffer; 1487c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1488c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1489c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 149035f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart * Scan the device for video chains and register video devices. 1491c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 14928e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Chains are scanned starting at their output terminals and walked backwards. 1493c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 149435f02a681b72ece756cf005e17f305a72329c140Laurent Pinchartstatic int uvc_scan_device(struct uvc_device *dev) 1495c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 14968e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_video_chain *chain; 1497c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *term; 1498c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1499c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(term, &dev->entities, list) { 15008e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (!UVC_ENTITY_IS_OTERM(term)) 1501c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1502c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* If the terminal is already included in a chain, skip it. 15048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * This can happen for chains that have multiple output 15058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * terminals, where all output terminals beside the first one 15068e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * will be inserted in the chain in forward scans. 15078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 15088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (term->chain.next || term->chain.prev) 1509c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1510c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15118e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain = kzalloc(sizeof(*chain), GFP_KERNEL); 15128e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (chain == NULL) 15138e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -ENOMEM; 15148e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15156241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart INIT_LIST_HEAD(&chain->entities); 15168e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart mutex_init(&chain->ctrl_mutex); 15178e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->dev = dev; 15188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15198e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_scan_chain(chain, term) < 0) { 15208e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart kfree(chain); 15218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 1522c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 15238e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15248e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", 15258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_print_chain(chain)); 15268e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15278e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_add_tail(&chain->list, &dev->chains); 1528c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1529c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15308e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (list_empty(&dev->chains)) { 1531c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "No valid video chain found.\n"); 1532c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1533c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1534c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1535c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1536c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1537c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15388e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* ------------------------------------------------------------------------ 15398e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Video device registration and unregistration 15408e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 15418e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15428e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* 1543716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * Delete the UVC device. 1544716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * 1545716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * Called by the kernel when the last reference to the uvc_device structure 1546716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * is released. 1547716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * 1548716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * As this function is called after or during disconnect(), all URBs have 1549716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * already been canceled by the USB core. There is no need to kill the 1550716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * interrupt URB manually. 1551716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1552716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchartstatic void uvc_delete(struct uvc_device *dev) 1553716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart{ 1554716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct list_head *p, *n; 1555716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1556716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_put_intf(dev->intf); 1557716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_put_dev(dev->udev); 1558716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1559716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_status_cleanup(dev); 1560716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_ctrl_cleanup_device(dev); 1561716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1562716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart list_for_each_safe(p, n, &dev->chains) { 1563716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_video_chain *chain; 1564716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart chain = list_entry(p, struct uvc_video_chain, list); 1565716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(chain); 1566716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart } 1567716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1568716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart list_for_each_safe(p, n, &dev->entities) { 1569716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_entity *entity; 1570716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart entity = list_entry(p, struct uvc_entity, list); 1571716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(entity); 1572716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart } 1573716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1574716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart list_for_each_safe(p, n, &dev->streams) { 1575716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_streaming *streaming; 1576716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart streaming = list_entry(p, struct uvc_streaming, list); 1577716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_driver_release_interface(&uvc_driver.driver, 1578716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart streaming->intf); 1579716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_put_intf(streaming->intf); 1580716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(streaming->format); 1581716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(streaming->header.bmaControls); 1582716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(streaming); 1583716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart } 1584716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1585716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(dev); 1586716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart} 1587716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1588716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchartstatic void uvc_release(struct video_device *vdev) 1589716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart{ 1590716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_streaming *stream = video_get_drvdata(vdev); 1591716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_device *dev = stream->dev; 1592716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1593716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart video_device_release(vdev); 1594716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1595716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart /* Decrement the registered streams count and delete the device when it 1596716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * reaches zero. 1597716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1598716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart if (atomic_dec_and_test(&dev->nstreams)) 1599716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_delete(dev); 1600716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart} 1601716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1602716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart/* 16038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Unregister the video devices. 16048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic void uvc_unregister_video(struct uvc_device *dev) 16068e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 16078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream; 16088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1609716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart /* Unregistering all video devices might result in uvc_delete() being 1610716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * called from inside the loop if there's no open file handle. To avoid 1611716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * that, increment the stream count before iterating over the streams 1612716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * and decrement it when done. 1613716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1614716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart atomic_inc(&dev->nstreams); 1615716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 16168e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 16178e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (stream->vdev == NULL) 16188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 16198e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1620716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart video_unregister_device(stream->vdev); 16218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->vdev = NULL; 16228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 1623716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1624716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart /* Decrement the stream count and call uvc_delete explicitly if there 1625716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * are no stream left. 1626716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1627716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart if (atomic_dec_and_test(&dev->nstreams)) 1628716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_delete(dev); 16298e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 16308e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16318e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_register_video(struct uvc_device *dev, 16328e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream) 16338e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 16348e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct video_device *vdev; 16358e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart int ret; 16368e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16378e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Initialize the streaming interface with default streaming 16388e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * parameters. 16398e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16408e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret = uvc_video_init(stream); 16418e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) { 16428e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_ERR, "Failed to initialize the device " 16438e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "(%d).\n", ret); 16448e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 16458e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 16468e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16478e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Register the device with V4L. */ 16488e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart vdev = video_device_alloc(); 16498e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (vdev == NULL) { 16508e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_ERR, "Failed to allocate video device (%d).\n", 16518e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret); 16528e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -ENOMEM; 16538e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 16548e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16558e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* We already hold a reference to dev->udev. The video device will be 16568e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * unregistered before the reference is released, so we don't need to 16578e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * get another one. 16588e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16598e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart vdev->parent = &dev->intf->dev; 16608e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart vdev->fops = &uvc_fops; 1661716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart vdev->release = uvc_release; 16628e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart strlcpy(vdev->name, dev->name, sizeof vdev->name); 16638e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16648e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Set the driver data before calling video_register_device, otherwise 16658e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * uvc_v4l2_open might race us. 16668e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16678e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->vdev = vdev; 16688e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart video_set_drvdata(vdev, stream); 16698e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16708e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); 16718e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) { 16728e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", 16738e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret); 16748e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->vdev = NULL; 16758e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart video_device_release(vdev); 16768e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 16778e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 16788e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1679716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart atomic_inc(&dev->nstreams); 16808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 16818e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 16828e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16838e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* 16848e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Register all video devices in all chains. 16858e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16868e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_register_terms(struct uvc_device *dev, 16876241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart struct uvc_video_chain *chain) 16888e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 16898e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream; 16908e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_entity *term; 16918e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart int ret; 16928e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16936241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_for_each_entry(term, &chain->entities, chain) { 16948e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 16958e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 16968e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16978e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream = uvc_stream_by_id(dev, term->id); 16988e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (stream == NULL) { 16998e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_INFO, "No streaming interface found " 17008e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "for terminal %u.", term->id); 17018e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 17028e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 17038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->chain = chain; 17058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret = uvc_register_video(dev, stream); 17068e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) 17078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 17088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 17098e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17108e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 17118e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 17128e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17138e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_register_chains(struct uvc_device *dev) 17148e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 17158e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_video_chain *chain; 17168e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart int ret; 17178e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(chain, &dev->chains, list) { 17196241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart ret = uvc_register_terms(dev, chain); 17208e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) 17218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 17228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 17238e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17248e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 17258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 17268e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17278e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* ------------------------------------------------------------------------ 17288e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * USB probe, disconnect, suspend and resume 17298e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 17308e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1731c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_probe(struct usb_interface *intf, 1732c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const struct usb_device_id *id) 1733c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1734c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = interface_to_usbdev(intf); 1735c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev; 1736c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret; 1737c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1738c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (id->idVendor && id->idProduct) 1739c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " 1740c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "(%04x:%04x)\n", udev->devpath, id->idVendor, 1741c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id->idProduct); 1742c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1743c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", 1744c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devpath); 1745c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17462c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Allocate memory for the device and initialize it. */ 1747c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) 1748c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1749c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1750c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&dev->entities); 17518e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart INIT_LIST_HEAD(&dev->chains); 175235f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart INIT_LIST_HEAD(&dev->streams); 1753716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart atomic_set(&dev->nstreams, 0); 175404a37e0f32f9882430bc1899899d2ed91b8aaf5bLaurent Pinchart atomic_set(&dev->users, 0); 1755c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1756c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev = usb_get_dev(udev); 1757c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->intf = usb_get_intf(intf); 1758c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 175973de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart dev->quirks = (uvc_quirks_param == -1) 176073de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart ? id->driver_info : uvc_quirks_param; 1761c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1762c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (udev->product != NULL) 1763d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(dev->name, udev->product, sizeof dev->name); 1764c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1765c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart snprintf(dev->name, sizeof dev->name, 1766c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "UVC Camera (%04x:%04x)", 1767c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idVendor), 1768c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idProduct)); 1769c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17702c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Parse the Video Class control descriptor. */ 1771c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_parse_control(dev) < 0) { 1772c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " 1773c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "descriptors.\n"); 1774c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1775c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1776c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1777fba4578ee925110587ef9b8b6ddfabf2ce288071Laurent Pinchart uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", 1778c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->uvc_version >> 8, dev->uvc_version & 0xff, 1779c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->product ? udev->product : "<unnamed>", 1780c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idVendor), 1781c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idProduct)); 1782c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 178373de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart if (dev->quirks != id->driver_info) { 178473de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " 178573de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart "parameter for testing purpose.\n", dev->quirks); 1786c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Please report required quirks to the " 1787c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "linux-uvc-devel mailing list.\n"); 1788c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1789c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17902c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Initialize controls. */ 1791c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_ctrl_init_device(dev) < 0) 1792c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1793c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17948e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Scan the device for video chains. */ 179535f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart if (uvc_scan_device(dev) < 0) 1796c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1797c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17988e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Register video devices. */ 17998e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_register_chains(dev) < 0) 18008e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart goto error; 18018e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 18022c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Save our data pointer in the interface data. */ 1803c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_set_intfdata(intf, dev); 1804c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 18052c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Initialize the interrupt URB. */ 1806c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((ret = uvc_status_init(dev)) < 0) { 1807c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Unable to initialize the status " 1808c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "endpoint (%d), status interrupt will not be " 1809c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "supported.\n", ret); 1810c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1811c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1812c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); 1813c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1814c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1815c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pincharterror: 1816716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_unregister_video(dev); 1817c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENODEV; 1818c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1819c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1820c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic void uvc_disconnect(struct usb_interface *intf) 1821c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1822c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 1823c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1824c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Set the USB interface data to NULL. This can be done outside the 1825c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * lock, as there's no other reader. 1826c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1827c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_set_intfdata(intf, NULL); 1828c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1829b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == 1830b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_SC_VIDEOSTREAMING) 1831c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return; 1832c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1833c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->state |= UVC_DEV_DISCONNECTED; 1834a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart 1835716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_unregister_video(dev); 1836c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1837c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1838c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_suspend(struct usb_interface *intf, pm_message_t message) 1839c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1840c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 184135f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart struct uvc_streaming *stream; 1842c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1843c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", 1844c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->cur_altsetting->desc.bInterfaceNumber); 1845c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1846c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Controls are cached on the fly so they don't need to be saved. */ 1847b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == 1848b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_SC_VIDEOCONTROL) 1849c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_status_suspend(dev); 1850c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 185135f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 185235f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart if (stream->intf == intf) 185335f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return uvc_video_suspend(stream); 1854c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1855c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 185635f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " 185735f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart "mismatch.\n"); 185835f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return -EINVAL; 1859c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1860c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 18619b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int __uvc_resume(struct usb_interface *intf, int reset) 1862c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1863c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 186435f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart struct uvc_streaming *stream; 1865c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1866c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", 1867c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->cur_altsetting->desc.bInterfaceNumber); 1868c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1869b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == 1870b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_SC_VIDEOCONTROL) { 18717564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil if (reset) { 18727564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil int ret = uvc_ctrl_resume_device(dev); 18737564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil 18747564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil if (ret < 0) 18757564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil return ret; 18767564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil } 1877c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1878c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_status_resume(dev); 1879c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1880c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 188135f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 188235f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart if (stream->intf == intf) 188335f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return uvc_video_resume(stream); 1884c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1885c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 188635f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " 188735f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart "mismatch.\n"); 188835f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return -EINVAL; 1889c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1890c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 18919b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int uvc_resume(struct usb_interface *intf) 18929b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart{ 18939b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart return __uvc_resume(intf, 0); 18949b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart} 18959b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart 18969b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int uvc_reset_resume(struct usb_interface *intf) 18979b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart{ 18989b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart return __uvc_resume(intf, 1); 18999b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart} 19009b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart 1901c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 1902310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart * Module parameters 1903310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart */ 1904310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1905310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartstatic int uvc_clock_param_get(char *buffer, struct kernel_param *kp) 1906310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart{ 1907310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart if (uvc_clock_param == CLOCK_MONOTONIC) 1908310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return sprintf(buffer, "CLOCK_MONOTONIC"); 1909310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart else 1910310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return sprintf(buffer, "CLOCK_REALTIME"); 1911310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart} 1912310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1913310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartstatic int uvc_clock_param_set(const char *val, struct kernel_param *kp) 1914310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart{ 1915310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 1916310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart val += strlen("clock_"); 1917310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1918310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart if (strcasecmp(val, "monotonic") == 0) 1919310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart uvc_clock_param = CLOCK_MONOTONIC; 1920310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart else if (strcasecmp(val, "realtime") == 0) 1921310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart uvc_clock_param = CLOCK_REALTIME; 1922310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart else 1923310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return -EINVAL; 1924310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1925310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return 0; 1926310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart} 1927310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1928310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 1929310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart &uvc_clock_param, S_IRUGO|S_IWUSR); 1930310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 1931310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); 1932310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 1933310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); 1934310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(quirks, "Forced device quirks"); 1935310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); 1936310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(trace, "Trace level bitmask"); 1937310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); 1938310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 1939310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1940310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart/* ------------------------------------------------------------------------ 1941c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Driver initialization and cleanup 1942c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1943c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1944c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1945c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The Logitech cameras listed below have their interface class set to 1946c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * VENDOR_SPEC because they don't announce themselves as UVC devices, even 1947c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * though they are compliant. 1948c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1949c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct usb_device_id uvc_ids[] = { 1950bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart /* Genius eFace 2025 */ 1951bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1952bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1953bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .idVendor = 0x0458, 1954bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .idProduct = 0x706e, 1955bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1956bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .bInterfaceSubClass = 1, 1957bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .bInterfaceProtocol = 0, 1958bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1959c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Microsoft Lifecam NX-6000 */ 1960c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1961c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1962c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x045e, 1963c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x00f8, 1964c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1965c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1966c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1967c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1968c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Microsoft Lifecam VX-7000 */ 1969c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1970c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1971c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x045e, 1972c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x0723, 1973c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1974c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1975c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1976c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1977c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Fusion */ 1978c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1979c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1980c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1981c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c1, 1982c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1983c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1984c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1985c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Orbit MP */ 1986c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1987c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1988c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1989c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c2, 1990c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1991c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1992c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1993c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Pro for Notebook */ 1994c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1995c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1996c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1997c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c3, 1998c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1999c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2000c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2001c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Pro 5000 */ 2002c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2003c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2004c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 2005c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c5, 2006c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2007c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2008c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2009c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam OEM Dell Notebook */ 2010c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2011c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2012c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 2013c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c6, 2014c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2015c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2016c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2017c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam OEM Cisco VT Camera II */ 2018c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2019c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2020c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 2021c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c7, 2022c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2023c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2024c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2025f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2026f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2027f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2028f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .idVendor = 0x058f, 2029f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .idProduct = 0x3820, 2030f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2031f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceSubClass = 1, 2032f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceProtocol = 0, 2033f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2034c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Apple Built-In iSight */ 20352c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2036c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2037c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x05ac, 2038c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x8501, 20392c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 20402c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceSubClass = 1, 20412c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceProtocol = 0, 2042c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 2043c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | UVC_QUIRK_BUILTIN_ISIGHT }, 2044c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Genesys Logic USB 2.0 PC Camera */ 20452c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2046c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 20472c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .idVendor = 0x05e3, 20482c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .idProduct = 0x0505, 20492c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 20502c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceSubClass = 1, 20512c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceProtocol = 0, 20522c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2053d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart /* ViMicro Vega */ 2054d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2055d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2056d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idVendor = 0x0ac8, 2057d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idProduct = 0x332d, 2058d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2059d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceSubClass = 1, 2060d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceProtocol = 0, 2061d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2062d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart /* ViMicro - Minoru3D */ 2063d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2064d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2065d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idVendor = 0x0ac8, 2066d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idProduct = 0x3410, 2067d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2068d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceSubClass = 1, 2069d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceProtocol = 0, 2070d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2071d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart /* ViMicro Venus - Minoru3D */ 2072d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 207350144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 207450144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .idVendor = 0x0ac8, 2075d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idProduct = 0x3420, 207650144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 207750144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceSubClass = 1, 207850144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceProtocol = 0, 207950144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2080c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* MT6227 */ 2081c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2082c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2083c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x0e8d, 2084c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x0004, 2085c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2086c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2087c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2088bab6f66c08043a93b9460f6e0bf2b1cd9cc03e53Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 2089bab6f66c08043a93b9460f6e0bf2b1cd9cc03e53Laurent Pinchart | UVC_QUIRK_PROBE_DEF }, 2090c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Syntek (HP Spartan) */ 2091c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2092c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2093c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x174f, 2094c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x5212, 2095c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2096c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2097c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 209825e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2099562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart /* Syntek (Samsung Q310) */ 2100562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2101562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2102562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .idVendor = 0x174f, 2103562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .idProduct = 0x5931, 2104562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2105562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceSubClass = 1, 2106562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceProtocol = 0, 2107562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2108f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart /* Syntek (Packard Bell EasyNote MX52 */ 2109f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2110f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2111f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .idVendor = 0x174f, 2112f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .idProduct = 0x8a12, 2113f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2114f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .bInterfaceSubClass = 1, 2115f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .bInterfaceProtocol = 0, 2116f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2117f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart /* Syntek (Asus F9SG) */ 211825e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 211925e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 212025e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .idVendor = 0x174f, 212125e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .idProduct = 0x8a31, 212225e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 212325e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceSubClass = 1, 212425e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceProtocol = 0, 2125c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2126c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Syntek (Asus U3S) */ 2127c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2128c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2129c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x174f, 2130c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x8a33, 2131c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2132c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2133c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2134c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 21350ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart /* Syntek (JAOtech Smart Terminal) */ 21360ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21370ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21380ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .idVendor = 0x174f, 21390ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .idProduct = 0x8a34, 21400ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21410ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceSubClass = 1, 21420ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceProtocol = 0, 21430ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2144849a3aba2d9830dc2a78a66078023e7e5ac26e15Filipe Rosset /* Lenovo Thinkpad SL400/SL500 */ 21452f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21462f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21472f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .idVendor = 0x17ef, 21482f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .idProduct = 0x480b, 21492f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21502f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceSubClass = 1, 21512f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceProtocol = 0, 21522f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 21532d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart /* Aveo Technology USB 2.0 Camera */ 21542d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21552d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21562d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .idVendor = 0x1871, 21572d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .idProduct = 0x0306, 21582d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21592d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .bInterfaceSubClass = 1, 21602d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .bInterfaceProtocol = 0, 21615bdf1377587bbde8ef0893cf726de116c2250208Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 21625bdf1377587bbde8ef0893cf726de116c2250208Laurent Pinchart | UVC_QUIRK_PROBE_EXTRAFIELDS }, 2163c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Ecamm Pico iMage */ 2164c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2165c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2166c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x18cd, 2167c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0xcafe, 2168c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2169c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2170c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2171c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, 2172ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart /* FSC WebCam V30S */ 2173ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2174ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2175ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .idVendor = 0x18ec, 2176ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .idProduct = 0x3288, 2177ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2178ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .bInterfaceSubClass = 1, 2179ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .bInterfaceProtocol = 0, 2180ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 21811e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart /* Arkmicro unbranded */ 21821e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21831e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21841e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .idVendor = 0x18ec, 21851e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .idProduct = 0x3290, 21861e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21871e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .bInterfaceSubClass = 1, 21881e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .bInterfaceProtocol = 0, 21891e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_DEF }, 2190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Bodelin ProScopeHR */ 2191c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2192c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_DEV_HI 2193c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2194c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x19ab, 2195c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x1000, 2196c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bcdDevice_hi = 0x0126, 2197c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2198c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2199c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2200c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STATUS_INTERVAL }, 22013bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart /* MSI StarCam 370i */ 22023bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 22033bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 22043bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .idVendor = 0x1b3b, 22053bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .idProduct = 0x2951, 22063bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 22073bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .bInterfaceSubClass = 1, 22083bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .bInterfaceProtocol = 0, 22093bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2210c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* SiGma Micro USB Web Camera */ 2211c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2212c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2213c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x1c4f, 2214c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x3000, 2215c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2216c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2217c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2218c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 2219d732c44c1a4b54e3c59ad92069bc2fd848aca5f3Laurent Pinchart | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, 2220c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Generic USB Video Class */ 2221c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, 2222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart {} 2223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 2224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2225c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_DEVICE_TABLE(usb, uvc_ids); 2226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstruct uvc_driver uvc_driver = { 2228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver = { 2229c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "uvcvideo", 2230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .probe = uvc_probe, 2231c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .disconnect = uvc_disconnect, 2232c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .suspend = uvc_suspend, 2233c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .resume = uvc_resume, 22349b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart .reset_resume = uvc_reset_resume, 2235c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .id_table = uvc_ids, 2236c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .supports_autosuspend = 1, 2237c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 2238c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 2239c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2240c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int __init uvc_init(void) 2241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 2242c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int result; 2243c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&uvc_driver.devices); 2245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&uvc_driver.controls); 2246c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&uvc_driver.ctrl_mutex); 2247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2248c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_ctrl_init(); 2249c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2250c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart result = usb_register(&uvc_driver.driver); 2251c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (result == 0) 2252c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); 2253c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return result; 2254c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 2255c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2256c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic void __exit uvc_cleanup(void) 2257c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 2258c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_deregister(&uvc_driver.driver); 2259c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 2260c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2261c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_init(uvc_init); 2262c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_exit(uvc_cleanup); 2263c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2264c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_AUTHOR(DRIVER_AUTHOR); 2265c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_DESCRIPTION(DRIVER_DESC); 2266c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_LICENSE("GPL"); 2267c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_VERSION(DRIVER_VERSION); 2268f87086e302300fdff1bd32049deb7a7f3e3de7daHans Verkuil 2269