uvc_driver.c revision 078f8947926732a526fb280c0f3a8920bf173b9c
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> 29c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/usb.h> 30c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/videodev2.h> 31c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/vmalloc.h> 32c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/wait.h> 33c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <asm/atomic.h> 349bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich#include <asm/unaligned.h> 35c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 36c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <media/v4l2-common.h> 37c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 38c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include "uvcvideo.h" 39c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 40c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_AUTHOR "Laurent Pinchart <laurent.pinchart@skynet.be>" 41c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_DESC "USB Video Class driver" 42c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#ifndef DRIVER_VERSION 43c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_VERSION "v0.1.0" 44c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#endif 45c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 460fbd8ee6de6ac3d0b93c96da848c5bc3ccc1dc83Laurent Pinchartunsigned int uvc_no_drop_param; 47c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic unsigned int uvc_quirks_param; 48c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartunsigned int uvc_trace_param; 49c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 50c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 512c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * Video formats 52c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 53c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 54c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_format_desc uvc_fmts[] = { 55c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 56c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:2 (YUYV)", 57c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_YUY2, 58c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YUYV, 59c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 60c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 61c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:0 (NV12)", 62c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_NV12, 63c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_NV12, 64c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 65c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 66c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "MJPEG", 67c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_MJPEG, 68c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_MJPEG, 69c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 70c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 71c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YVU 4:2:0 (YV12)", 72c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_YV12, 73c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YVU420, 74c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 75c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 76c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:0 (I420)", 77c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_I420, 78c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YUV420, 79c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 80c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 81c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:2 (UYVY)", 82c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_UYVY, 83c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_UYVY, 84c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 85c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 86c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "Greyscale", 87c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_Y800, 88c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_GREY, 89c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 90c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 91c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "RGB Bayer", 92c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_BY8, 93c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_SBGGR8, 94c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 95c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 96c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 97c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 98c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Utility functions 99c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 100c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 101c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstruct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, 102c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u8 epaddr) 103c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 104c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep; 105c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 106c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 107c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 108c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep = &alts->endpoint[i]; 109c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->desc.bEndpointAddress == epaddr) 110c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ep; 111c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 112c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 113c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 114c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 115c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 116c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) 117c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 118c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int len = ARRAY_SIZE(uvc_fmts); 119c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 120c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 121c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < len; ++i) { 122c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) 123c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return &uvc_fmts[i]; 124c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 125c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 126c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 127c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 128c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 129c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic __u32 uvc_colorspace(const __u8 primaries) 130c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 131c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart static const __u8 colorprimaries[] = { 132c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 0, 133c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SRGB, 134c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_470_SYSTEM_M, 135c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_470_SYSTEM_BG, 136c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SMPTE170M, 137c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SMPTE240M, 138c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }; 139c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 140c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (primaries < ARRAY_SIZE(colorprimaries)) 141c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return colorprimaries[primaries]; 142c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 143c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 144c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 145c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 146c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Simplify a fraction using a simple continued fraction decomposition. The 147c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * idea here is to convert fractions such as 333333/10000000 to 1/30 using 148c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 32 bit arithmetic only. The algorithm is not perfect and relies upon two 149c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * arbitrary parameters to remove non-significative terms from the simple 150c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * continued fraction decomposition. Using 8 and 333 for n_terms and threshold 151c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * respectively seems to give nice results. 152c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 153c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartvoid uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, 154c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int n_terms, unsigned int threshold) 155c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 156c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t *an; 157c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t x, y, r; 158c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n; 159c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 160c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); 161c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (an == NULL) 162c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return; 163c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 164c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Convert the fraction to a simple continued fraction. See 165c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * http://mathforum.org/dr.math/faq/faq.fractions.html 166c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Stop if the current term is bigger than or equal to the given 167c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * threshold. 168c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 169c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = *numerator; 170c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = *denominator; 171c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 172c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (n = 0; n < n_terms && y != 0; ++n) { 173c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart an[n] = x / y; 174c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (an[n] >= threshold) { 175c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (n < 2) 176c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n++; 177c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 178c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 179c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 180c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart r = x - an[n] * y; 181c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = y; 182c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = r; 183c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 184c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 185c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Expand the simple continued fraction back to an integer fraction. */ 186c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = 0; 187c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = 1; 188c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 189c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = n; i > 0; --i) { 190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart r = y; 191c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = an[i-1] * y + x; 192c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = r; 193c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 194c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 195c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *numerator = y; 196c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *denominator = x; 197c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(an); 198c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 199c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 200c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Convert a fraction to a frame interval in 100ns multiples. The idea here is 201c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * to compute numerator / denominator * 10000000 using 32 bit fixed point 202c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * arithmetic only. 203c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 204c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartuint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) 205c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 206c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t multiplier; 207c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 208c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Saturate the result if the operation would overflow. */ 209c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (denominator == 0 || 210c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart numerator/denominator >= ((uint32_t)-1)/10000000) 211c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return (uint32_t)-1; 212c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 213c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Divide both the denominator and the multiplier by two until 214c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * numerator * multiplier doesn't overflow. If anyone knows a better 215c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * algorithm please let me know. 216c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 217c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart multiplier = 10000000; 218c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (numerator > ((uint32_t)-1)/multiplier) { 219c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart multiplier /= 2; 220c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart denominator /= 2; 221c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return denominator ? numerator * multiplier / denominator : 0; 224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 225c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Terminal and unit management 228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 229c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) 231c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 232c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity; 233c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 234c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(entity, &dev->entities, list) { 235c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->id == id) 236c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 237c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 238c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 239c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 240c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 242c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, 243c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int id, struct uvc_entity *entity) 244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 246c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity == NULL) 248c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart entity = list_entry(&dev->entities, struct uvc_entity, list); 249c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 250c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry_continue(entity, &dev->entities, list) { 251c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (UVC_ENTITY_TYPE(entity)) { 252c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case TT_STREAMING: 253c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->output.bSourceID == id) 254c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 255c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 256c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 257c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_PROCESSING_UNIT: 258c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->processing.bSourceID == id) 259c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 260c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 261c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 262c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_SELECTOR_UNIT: 263c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < entity->selector.bNrInPins; ++i) 264c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->selector.baSourceID[i] == id) 265c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 266c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 267c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 268c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_EXTENSION_UNIT: 269c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < entity->extension.bNrInPins; ++i) 270c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->extension.baSourceID[i] == id) 271c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 272c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 273c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 274c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 275c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 276c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 277c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 278c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 279c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 280c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Descriptors handling 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]) { 300c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_UNCOMPRESSED: 301c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_FRAME_BASED: 302233548a2fd934a0220db8b1521c0bc88c82e5e53Laurent Pinchart n = buffer[2] == VS_FORMAT_UNCOMPRESSED ? 27 : 28; 303233548a2fd934a0220db8b1521c0bc88c82e5e53Laurent Pinchart if (buflen < n) { 304c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent 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 { 319c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Unknown video format " 320c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart UVC_GUID_FORMAT "\n", 321c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart UVC_GUID_ARGS(&buffer[5])); 322c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart snprintf(format->name, sizeof format->name, 323c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart UVC_GUID_FORMAT, UVC_GUID_ARGS(&buffer[5])); 324c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = 0; 325c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 326c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 327c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = buffer[21]; 328c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[2] == VS_FORMAT_UNCOMPRESSED) { 329c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ftype = VS_FRAME_UNCOMPRESSED; 330c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 331c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ftype = VS_FRAME_FRAME_BASED; 332c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[27]) 333c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED; 334c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 335c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 336c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 337c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_MJPEG: 338c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 11) { 339c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" 340c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 341c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 342c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 343c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 344c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 345c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 346d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "MJPEG", sizeof format->name); 347c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = V4L2_PIX_FMT_MJPEG; 348c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED; 349c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = 0; 350c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ftype = VS_FRAME_MJPEG; 351c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 352c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 353c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_DV: 354c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 9) { 355c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" 356c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 357c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 358c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 359c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 360c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 361c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 362c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[8] & 0x7f) { 363c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 0: 364d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "SD-DV", sizeof format->name); 365c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 366c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 1: 367d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "SDL-DV", sizeof format->name); 368c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 369c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 2: 370d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "HD-DV", sizeof format->name); 371c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 372c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 373c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" 374c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d: unknown DV format %u\n", 375c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 376c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, buffer[8]); 377c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 378c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 379c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 380d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", 381c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof format->name); 382c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 383c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = V4L2_PIX_FMT_DV; 384c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 385c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = 0; 386c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ftype = 0; 387c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 388c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Create a dummy frame descriptor. */ 389c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame = &format->frame[0]; 390c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memset(&format->frame[0], 0, sizeof format->frame[0]); 391c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIntervalType = 1; 392c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 1; 393c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwFrameInterval = *intervals; 394c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *(*intervals)++ = 1; 395c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->nframes = 1; 396c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 397c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 398c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_MPEG2TS: 399c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_STREAM_BASED: 400c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Not supported yet. */ 401c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 402c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" 403c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d unsupported format %u\n", 404c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber, 405c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[2]); 406c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 407c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 408c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 409c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); 410c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 411c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 412c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 413c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 414c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the frame descriptors. Only uncompressed, MJPEG and frame 415c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * based formats have frame descriptors. 416c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 417c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2 && buffer[2] == ftype) { 418078f8947926732a526fb280c0f3a8920bf173b9cLaurent Pinchart frame = &format->frame[format->nframes]; 419c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ftype != 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) { 427c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent 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]); 439c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ftype != 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 494c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen > 2 && buffer[2] == VS_STILL_IMAGE_FRAME) { 495c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 496c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 497c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 498c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 499c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen > 2 && buffer[2] == VS_COLORFORMAT) { 500c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 6) { 501c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" 502c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d COLORFORMAT error\n", 503c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 504c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 505c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 506c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 507c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 508c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->colorspace = uvc_colorspace(buffer[3]); 509c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 510c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 511c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 512c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 513c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 514c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return buffer - start; 515c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 516c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 517c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_streaming(struct uvc_device *dev, 518c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf) 519c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 520c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_streaming *streaming = NULL; 521c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_format *format; 522c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_frame *frame; 523c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = &intf->altsetting[0]; 524c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned char *_buffer, *buffer = alts->extra; 525c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int _buflen, buflen = alts->extralen; 526c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int nformats = 0, nframes = 0, nintervals = 0; 527c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int size, i, n, p; 528c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u32 *interval; 529c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u16 psize; 530c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret = -EINVAL; 531c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 532c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass 533c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart != SC_VIDEOSTREAMING) { 534c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " 535c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "video streaming interface\n", dev->udev->devnum, 536c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->altsetting[0].desc.bInterfaceNumber); 537c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 538c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 539c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 540c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 541c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " 542c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "claimed\n", dev->udev->devnum, 543c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->altsetting[0].desc.bInterfaceNumber); 544c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 545c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 546c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 547c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming = kzalloc(sizeof *streaming, GFP_KERNEL); 548c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (streaming == NULL) { 549c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_driver_release_interface(&uvc_driver.driver, intf); 550c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 551c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 552c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 553c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&streaming->mutex); 554c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->intf = usb_get_intf(intf); 555c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 556c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 557c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* The Pico iMage webcam has its class-specific interface descriptors 558c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * after the endpoint descriptors. 559c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 560c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen == 0) { 561c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 562c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep = &alts->endpoint[i]; 563c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 564c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->extralen == 0) 565c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 566c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 567c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->extralen > 2 && 568c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep->extra[1] == USB_DT_CS_INTERFACE) { 569c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "trying extra data " 570c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "from endpoint %u.\n", i); 571c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer = alts->endpoint[i].extra; 572c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen = alts->endpoint[i].extralen; 573c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 574c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 575c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 576c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 577c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 578c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Skip the standard interface descriptors. */ 579c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 580c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 581c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 582c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 583c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 584c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen <= 2) { 585c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " 586c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface descriptors found.\n"); 587c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 588c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 589c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 590c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the header descriptor. */ 591ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart switch (buffer[2]) { 592ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart case VS_OUTPUT_HEADER: 593ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 594ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart size = 9; 595ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 596ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 597ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart case VS_INPUT_HEADER: 598ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 599ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart size = 13; 600ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 601ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 602ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart default: 603c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 604ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "%d HEADER descriptor not found.\n", dev->udev->devnum, 605ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart alts->desc.bInterfaceNumber); 606c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 607ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 608c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 609ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart p = buflen >= 4 ? buffer[3] : 0; 610ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart n = buflen >= size ? buffer[size-1] : 0; 611ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 612ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (buflen < size + p*n) { 613ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 614ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "interface %d HEADER descriptor is invalid.\n", 615ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber); 616ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart goto error; 617ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 618c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 619ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bNumFormats = p; 620ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bEndpointAddress = buffer[6]; 621ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (buffer[2] == VS_INPUT_HEADER) { 622c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bmInfo = buffer[7]; 623c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTerminalLink = buffer[8]; 624c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bStillCaptureMethod = buffer[9]; 625c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTriggerSupport = buffer[10]; 626c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTriggerUsage = buffer[11]; 627c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 628ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bTerminalLink = buffer[7]; 629ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 630ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bControlSize = n; 631ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 632ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL); 633ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (streaming->header.bmaControls == NULL) { 634ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart ret = -ENOMEM; 635c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 636c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 637c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 638ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart memcpy(streaming->header.bmaControls, &buffer[size], p*n); 639ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 640c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 641c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 642c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 643c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buffer = buffer; 644c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buflen = buflen; 645c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 646c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Count the format and frame descriptors. */ 647c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (_buflen > 2) { 648c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (_buffer[2]) { 649c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_UNCOMPRESSED: 650c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_MJPEG: 651c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_FRAME_BASED: 652c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nformats++; 653c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 654c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 655c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_DV: 656c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* DV format has no frame descriptor. We will create a 657c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * dummy frame descriptor with a dummy frame interval. 658c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 659c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nformats++; 660c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 661c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals++; 662c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 663c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 664c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_MPEG2TS: 665c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_STREAM_BASED: 666c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 667c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT %u is not supported.\n", 668c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 669c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, _buffer[2]); 670c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 671c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 672c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FRAME_UNCOMPRESSED: 673c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FRAME_MJPEG: 674c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 675c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (_buflen > 25) 676c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals += _buffer[25] ? _buffer[25] : 3; 677c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 678c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 679c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FRAME_FRAME_BASED: 680c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 681c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (_buflen > 21) 682c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals += _buffer[21] ? _buffer[21] : 3; 683c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 684c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 685c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 686c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buflen -= _buffer[0]; 687c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buffer += _buffer[0]; 688c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 689c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 690c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (nformats == 0) { 691c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 692c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "%d has no supported formats defined.\n", 693c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber); 694c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 695c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 696c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 697c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart size = nformats * sizeof *format + nframes * sizeof *frame 698c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart + nintervals * sizeof *interval; 699c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format = kzalloc(size, GFP_KERNEL); 700c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (format == NULL) { 701c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ret = -ENOMEM; 702c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 703c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 704c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 705c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame = (struct uvc_frame *)&format[nformats]; 706c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart interval = (__u32 *)&frame[nframes]; 707c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 708c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->format = format; 709c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->nformats = nformats; 710c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 711c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the format descriptors. */ 712c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2) { 713c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 714c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_UNCOMPRESSED: 715c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_MJPEG: 716c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_DV: 717c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VS_FORMAT_FRAME_BASED: 718c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->frame = frame; 719c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ret = uvc_parse_format(dev, streaming, format, 720c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart &interval, buffer, buflen); 721c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ret < 0) 722c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 723c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 724c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame += format->nframes; 725c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format++; 726c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 727c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= ret; 728c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += ret; 729c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 730c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 731c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 732c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 733c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 734c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 735c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 736c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 737c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 738c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 739c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the alternate settings to find the maximum bandwidth. */ 740c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < intf->num_altsetting; ++i) { 741c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep; 742c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts = &intf->altsetting[i]; 743c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep = uvc_find_endpoint(alts, 744c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bEndpointAddress); 745c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep == NULL) 746c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 747c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 748c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart psize = le16_to_cpu(ep->desc.wMaxPacketSize); 749c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); 750c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (psize > streaming->maxpsize) 751c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->maxpsize = psize; 752c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 753c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 754c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&streaming->list, &dev->streaming); 755c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 756c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 757c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pincharterror: 758c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_driver_release_interface(&uvc_driver.driver, intf); 759c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_put_intf(intf); 760c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->format); 761c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->header.bmaControls); 762c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming); 763c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ret; 764c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 765c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 766c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Parse vendor-specific extensions. */ 767c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_vendor_control(struct uvc_device *dev, 768c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *buffer, int buflen) 769c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 770c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = dev->udev; 771c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 772c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *unit; 773c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int n, p; 774c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int handled = 0; 775c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 776c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 777c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 0x046d: /* Logitech */ 778c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[1] != 0x41 || buffer[2] != 0x01) 779c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 780c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 781c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech implements several vendor specific functions 782c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * through vendor specific extension units (LXU). 783c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 784c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The LXU descriptors are similar to XU descriptors 785c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * (see "USB Device Video Class for Video Devices", section 786c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 3.7.2.6 "Extension Unit Descriptor") with the following 787c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * differences: 788c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 789c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 790c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 0 bLength 1 Number 791c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Size of this descriptor, in bytes: 24+p+n*2 792c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 793c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 23+p+n bmControlsType N Bitmap 794c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Individual bits in the set are defined: 795c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 0: Absolute 796c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1: Relative 797c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 798c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * This bitset is mapped exactly the same as bmControls. 799c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 800c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 23+p+n*2 bReserved 1 Boolean 801c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 802c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 24+p+n*2 iExtension 1 Index 803c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Index of a string descriptor that describes this 804c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * extension unit. 805c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 806c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 807c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 22 ? buffer[21] : 0; 808c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 25 + p ? buffer[22+p] : 0; 809c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 810c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 25 + p + 2*n) { 811c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 812c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d EXTENSION_UNIT error\n", 813c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 814c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 815c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 816c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 817c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit = kzalloc(sizeof *unit + p + 2*n, GFP_KERNEL); 818c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 819c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 820c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 821c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->id = buffer[3]; 822c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->type = VC_EXTENSION_UNIT; 823c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 824c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bNumControls = buffer[20]; 8259bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich unit->extension.bNrInPins = get_unaligned_le16(&buffer[21]); 826c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.baSourceID = (__u8 *)unit + sizeof *unit; 827c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.baSourceID, &buffer[22], p); 828c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bControlSize = buffer[22+p]; 829c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bmControls = (__u8 *)unit + sizeof *unit + p; 830c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bmControlsType = (__u8 *)unit + sizeof *unit 831c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart + p + n; 832c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 833c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 834c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[24+p+2*n] != 0) 835c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[24+p+2*n], unit->name, 836c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 837c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 838c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Extension %u", buffer[3]); 839c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 840c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 841c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart handled = 1; 842c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 843c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 844c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 845c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return handled; 846c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 847c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 848c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_standard_control(struct uvc_device *dev, 849c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *buffer, int buflen) 850c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 851c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = dev->udev; 852c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *unit, *term; 853c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf; 854c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 855c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n, p, len; 856c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u16 type; 857c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 858c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 859c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_HEADER: 860c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 12 ? buffer[11] : 0; 861c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 862c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 12 || buflen < 12 + n) { 863c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 864c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d HEADER error\n", udev->devnum, 865c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 866c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 867c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 868c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 8699bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich dev->uvc_version = get_unaligned_le16(&buffer[3]); 8709bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich dev->clock_frequency = get_unaligned_le32(&buffer[7]); 871c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 872c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse all USB Video Streaming interfaces. */ 873c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < n; ++i) { 874c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf = usb_ifnum_to_if(udev, buffer[12+i]); 875c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf == NULL) { 876c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d " 877c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d doesn't exists\n", 878c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, i); 879c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 880c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 881c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 882c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_parse_streaming(dev, intf); 883c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 884c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 885c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 886c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_INPUT_TERMINAL: 887c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 8) { 888c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 889c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL error\n", 890c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 891c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 892c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 893c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 894c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure the terminal type MSB is not null, otherwise it 895c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * could be confused with a unit. 896c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 8979bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich type = get_unaligned_le16(&buffer[4]); 898c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((type & 0xff00) == 0) { 899c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 900c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL %d has invalid " 901c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "type 0x%04x, skipping\n", udev->devnum, 902c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, 903c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[3], type); 904c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 905c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 906c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 907c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = 0; 908c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = 0; 909c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 8; 910c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 911c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (type == ITT_CAMERA) { 912c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 15 ? buffer[14] : 0; 913c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 15; 914c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 915c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else if (type == ITT_MEDIA_TRANSPORT_INPUT) { 916c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 9 ? buffer[8] : 0; 917c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 10 + n ? buffer[9+n] : 0; 918c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 10; 919c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 920c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 921c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < len + n + p) { 922c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 923c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL error\n", 924c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 925c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 926c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 927c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 928c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term = kzalloc(sizeof *term + n + p, GFP_KERNEL); 929c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL) 930c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 931c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 932c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->id = buffer[3]; 933c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->type = type | UVC_TERM_INPUT; 934c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 935c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (UVC_ENTITY_TYPE(term) == ITT_CAMERA) { 936c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.bControlSize = n; 937c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.bmControls = (__u8 *)term + sizeof *term; 938c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wObjectiveFocalLengthMin = 9399bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[8]); 940c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wObjectiveFocalLengthMax = 9419bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[10]); 942c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wOcularFocalLength = 9439bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[12]); 944c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->camera.bmControls, &buffer[15], n); 945c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else if (UVC_ENTITY_TYPE(term) == ITT_MEDIA_TRANSPORT_INPUT) { 946c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bControlSize = n; 947c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bmControls = (__u8 *)term + sizeof *term; 948c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bTransportModeSize = p; 949c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bmTransportModes = (__u8 *)term 950c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart + sizeof *term + n; 951c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->media.bmControls, &buffer[9], n); 952c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->media.bmTransportModes, &buffer[10+n], p); 953c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 954c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 955c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[7] != 0) 956c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[7], term->name, 957c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof term->name); 958c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else if (UVC_ENTITY_TYPE(term) == ITT_CAMERA) 959c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Camera %u", buffer[3]); 960c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else if (UVC_ENTITY_TYPE(term) == ITT_MEDIA_TRANSPORT_INPUT) 961c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Media %u", buffer[3]); 962c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 963c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Input %u", buffer[3]); 964c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 965c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&term->list, &dev->entities); 966c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 967c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 968c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_OUTPUT_TERMINAL: 969c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 9) { 970c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 971c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d OUTPUT_TERMINAL error\n", 972c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 973c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 974c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 975c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 976c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure the terminal type MSB is not null, otherwise it 977c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * could be confused with a unit. 978c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 9799bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich type = get_unaligned_le16(&buffer[4]); 980c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((type & 0xff00) == 0) { 981c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 982c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d OUTPUT_TERMINAL %d has invalid " 983c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "type 0x%04x, skipping\n", udev->devnum, 984c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, buffer[3], type); 985c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 986c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 987c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 988c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term = kzalloc(sizeof *term, GFP_KERNEL); 989c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL) 990c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 991c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 992c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->id = buffer[3]; 993c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->type = type | UVC_TERM_OUTPUT; 994c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->output.bSourceID = buffer[7]; 995c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 996c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[8] != 0) 997c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[8], term->name, 998c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof term->name); 999c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1000c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Output %u", buffer[3]); 1001c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1002c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&term->list, &dev->entities); 1003c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1004c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1005c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_SELECTOR_UNIT: 1006c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 5 ? buffer[4] : 0; 1007c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1008c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 5 || buflen < 6 + p) { 1009c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1010c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d SELECTOR_UNIT error\n", 1011c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1012c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1013c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1014c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1015c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit = kzalloc(sizeof *unit + p, GFP_KERNEL); 1016c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1017c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1018c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1019c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->id = buffer[3]; 1020c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->type = buffer[2]; 1021c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->selector.bNrInPins = buffer[4]; 1022c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->selector.baSourceID = (__u8 *)unit + sizeof *unit; 1023c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->selector.baSourceID, &buffer[5], p); 1024c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1025c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[5+p] != 0) 1026c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[5+p], unit->name, 1027c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1028c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1029c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Selector %u", buffer[3]); 1030c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1031c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1032c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1033c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1034c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_PROCESSING_UNIT: 1035c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 8 ? buffer[7] : 0; 1036c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = dev->uvc_version >= 0x0110 ? 10 : 9; 1037c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1038c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < p + n) { 1039c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1040c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d PROCESSING_UNIT error\n", 1041c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1042c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1043c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1044c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1045c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit = kzalloc(sizeof *unit + n, GFP_KERNEL); 1046c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1047c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1048c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1049c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->id = buffer[3]; 1050c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->type = buffer[2]; 1051c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bSourceID = buffer[4]; 1052c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.wMaxMultiplier = 10539bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[5]); 1054c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bControlSize = buffer[7]; 1055c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bmControls = (__u8 *)unit + sizeof *unit; 1056c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->processing.bmControls, &buffer[8], n); 1057c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (dev->uvc_version >= 0x0110) 1058c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bmVideoStandards = buffer[9+n]; 1059c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1060c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[8+n] != 0) 1061c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[8+n], unit->name, 1062c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1063c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1064c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Processing %u", buffer[3]); 1065c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1066c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1067c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1068c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1069c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_EXTENSION_UNIT: 1070c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 22 ? buffer[21] : 0; 1071c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 24 + p ? buffer[22+p] : 0; 1072c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1073c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 24 + p + n) { 1074c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1075c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d EXTENSION_UNIT error\n", 1076c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1077c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1078c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1079c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1080c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit = kzalloc(sizeof *unit + p + n, GFP_KERNEL); 1081c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1082c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1083c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1084c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->id = buffer[3]; 1085c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->type = buffer[2]; 1086c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 1087c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bNumControls = buffer[20]; 10889bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich unit->extension.bNrInPins = get_unaligned_le16(&buffer[21]); 1089c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.baSourceID = (__u8 *)unit + sizeof *unit; 1090c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.baSourceID, &buffer[22], p); 1091c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bControlSize = buffer[22+p]; 1092c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bmControls = (__u8 *)unit + sizeof *unit + p; 1093c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.bmControls, &buffer[23+p], n); 1094c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1095c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[23+p+n] != 0) 1096c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[23+p+n], unit->name, 1097c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1098c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1099c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Extension %u", buffer[3]); 1100c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1101c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1102c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1103c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1104c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 1105c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " 1106c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "descriptor (%u)\n", buffer[2]); 1107c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1108c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1109c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1110c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1111c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1112c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1113c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_control(struct uvc_device *dev) 1114c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1115c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 1116c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned char *buffer = alts->extra; 1117c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int buflen = alts->extralen; 1118c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret; 1119c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1120c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the default alternate setting only, as the UVC specification 1121c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * defines a single alternate setting, the default alternate setting 1122c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * zero. 1123c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1124c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1125c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2) { 1126c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_parse_vendor_control(dev, buffer, buflen) || 1127c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[1] != USB_DT_CS_INTERFACE) 1128c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto next_descriptor; 1129c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1130c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) 1131c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ret; 1132c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1133c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartnext_descriptor: 1134c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 1135c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 1136c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1137c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1138538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart /* Check if the optional status endpoint is present. Built-in iSight 1139538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * webcams have an interrupt endpoint but spit proprietary data that 1140538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * don't conform to the UVC status endpoint messages. Don't try to 1141538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * handle the interrupt endpoint for those cameras. 1142538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart */ 1143538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart if (alts->desc.bNumEndpoints == 1 && 1144538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1145c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep = &alts->endpoint[0]; 1146c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_endpoint_descriptor *desc = &ep->desc; 1147c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1148c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (usb_endpoint_is_int_in(desc) && 1149c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1150c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart desc->bInterval != 0) { 1151c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " 1152c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "(addr %02x).\n", desc->bEndpointAddress); 1153c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->int_ep = ep; 1154c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1155c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1156c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1157c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1158c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1159c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1160c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 1161c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * USB probe and disconnect 1162c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1163c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1164c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1165c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Unregister the video devices. 1166c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1167c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic void uvc_unregister_video(struct uvc_device *dev) 1168c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1169c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (dev->video.vdev) { 1170c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (dev->video.vdev->minor == -1) 1171c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart video_device_release(dev->video.vdev); 1172c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1173c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart video_unregister_device(dev->video.vdev); 1174c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->video.vdev = NULL; 1175c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1176c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1177c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1178c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1179c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1180c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * and containing the following units: 1181c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 11822c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * - one Output Terminal (USB Streaming or Display) 1183c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero or one Processing Unit 1184c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero, one or mode single-input Selector Units 1185c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero or one multiple-input Selector Units, provided all inputs are 1186c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * connected to input terminals 1187c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero, one or mode single-input Extension Units 11882c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * - one or more Input Terminals (Camera, External or USB Streaming) 1189c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * A side forward scan is made on each detected entity to check for additional 1191c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * extension units. 1192c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1193c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_scan_chain_entity(struct uvc_video_device *video, 1194c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity) 1195c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1196c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (UVC_ENTITY_TYPE(entity)) { 1197c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_EXTENSION_UNIT: 1198c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1199c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- XU %d", entity->id); 1200c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1201c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->extension.bNrInPins != 1) { 1202c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " 1203c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "than 1 input pin.\n", entity->id); 1204c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1205c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1206c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1207c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&entity->chain, &video->extensions); 1208c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1209c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1210c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_PROCESSING_UNIT: 1211c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1212c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- PU %d", entity->id); 1213c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1214c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (video->processing != NULL) { 1215c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found multiple " 1216c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "Processing Units in chain.\n"); 1217c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1218c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1219c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1220c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart video->processing = entity; 1221c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_SELECTOR_UNIT: 1224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1225c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- SU %d", entity->id); 1226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Single-input selector units are ignored. */ 1228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->selector.bNrInPins == 1) 1229c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1231c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (video->selector != NULL) { 1232c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " 1233c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "Units in chain.\n"); 1234c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1235c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1236c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1237c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart video->selector = entity; 1238c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1239c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1240c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case ITT_VENDOR_SPECIFIC: 1241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case ITT_CAMERA: 1242c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case ITT_MEDIA_TRANSPORT_INPUT: 1243c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- IT %d\n", entity->id); 1245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1246c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&entity->chain, &video->iterms); 1247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1248c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1249ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart case TT_STREAMING: 1250ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1251ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart printk(" <- IT %d\n", entity->id); 1252ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1253ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (!UVC_ENTITY_IS_ITERM(entity)) { 1254ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Unsupported input " 1255ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "terminal %u.\n", entity->id); 1256ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart return -1; 1257ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 1258ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1259ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (video->sterm != NULL) { 1260ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found multiple streaming " 1261ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "entities in chain.\n"); 1262ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart return -1; 1263ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 1264ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1265ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart list_add_tail(&entity->chain, &video->iterms); 1266ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart video->sterm = entity; 1267ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 1268ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1269c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 1270c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " 1271c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); 1272c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1273c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1274c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1275c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1276c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1277c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1278c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_scan_chain_forward(struct uvc_video_device *video, 1279c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity, struct uvc_entity *prev) 1280c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1281c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *forward; 1282c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int found; 1283c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1284c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Forward scan */ 1285c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward = NULL; 1286c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart found = 0; 1287c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1288c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (1) { 1289c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward = uvc_entity_by_reference(video->dev, entity->id, 1290c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward); 1291c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (forward == NULL) 1292c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1293c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1294c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (UVC_ENTITY_TYPE(forward) != VC_EXTENSION_UNIT || 1295c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward == prev) 1296c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1297c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1298c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (forward->extension.bNrInPins != 1) { 1299c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has" 1300c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "more than 1 input pin.\n", entity->id); 1301c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1302c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1303c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1304c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&forward->chain, &video->extensions); 1305c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) { 1306c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (!found) 1307c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" (-> XU"); 1308c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1309c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" %d", forward->id); 1310c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart found = 1; 1311c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1312c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1313c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (found) 1314c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(")"); 1315c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1316c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1317c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1318c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1319c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_scan_chain_backward(struct uvc_video_device *video, 1320c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity) 1321c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1322c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *term; 1323c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int id = -1, i; 1324c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1325c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (UVC_ENTITY_TYPE(entity)) { 1326c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_EXTENSION_UNIT: 1327c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = entity->extension.baSourceID[0]; 1328c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1329c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1330c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_PROCESSING_UNIT: 1331c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = entity->processing.bSourceID; 1332c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1333c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1334c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case VC_SELECTOR_UNIT: 1335c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Single-input selector units are ignored. */ 1336c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->selector.bNrInPins == 1) { 1337c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = entity->selector.baSourceID[0]; 1338c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1339c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1340c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1341c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1342c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- IT"); 1343c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1344c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart video->selector = entity; 1345c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < entity->selector.bNrInPins; ++i) { 1346c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = entity->selector.baSourceID[i]; 1347c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term = uvc_entity_by_id(video->dev, id); 1348c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1349c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " 1350c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "input %d isn't connected to an " 1351c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "input terminal\n", entity->id, i); 1352c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1353c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1354c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1355c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1356c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" %d", term->id); 1357c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1358c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&term->chain, &video->iterms); 1359c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_scan_chain_forward(video, term, entity); 1360c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1361c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1362c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1363c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk("\n"); 1364c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1365c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = 0; 1366c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1367c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1368c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1369c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return id; 1370c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1371c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1372c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_scan_chain(struct uvc_video_device *video) 1373c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1374c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity, *prev; 1375c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int id; 1376c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1377c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart entity = video->oterm; 1378c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain: OT %d", entity->id); 1379ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1380ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (UVC_ENTITY_TYPE(entity) == TT_STREAMING) 1381ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart video->sterm = entity; 1382ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1383c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = entity->output.bSourceID; 1384c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (id != 0) { 1385c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart prev = entity; 1386c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart entity = uvc_entity_by_id(video->dev, id); 1387c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity == NULL) { 1388c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found reference to " 1389c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "unknown entity %d.\n", id); 1390c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1391c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1392c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1393c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Process entity */ 1394c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_scan_chain_entity(video, entity) < 0) 1395c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1396c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1397c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Forward scan */ 1398c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_scan_chain_forward(video, entity, prev) < 0) 1399c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1400c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1401c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Stop when a terminal is found. */ 1402c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (!UVC_ENTITY_IS_UNIT(entity)) 1403c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1404c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1405c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Backward scan */ 1406c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = uvc_scan_chain_backward(video, entity); 1407c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (id < 0) 1408c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return id; 1409c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1410c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1411ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (video->sterm == NULL) { 1412ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "No streaming entity found in " 1413ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "chain.\n"); 1414ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart return -1; 1415ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 1416c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1417c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1418c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1419c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1420c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1421c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Register the video devices. 1422c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1423c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The driver currently supports a single video device per control interface 1424c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * only. The terminal and units must match the following structure: 1425c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1426ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart * ITT_* -> VC_PROCESSING_UNIT -> VC_EXTENSION_UNIT{0,n} -> TT_STREAMING 1427ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart * TT_STREAMING -> VC_PROCESSING_UNIT -> VC_EXTENSION_UNIT{0,n} -> OTT_* 1428c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1429c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The Extension Units, if present, must have a single input pin. The 1430c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Processing Unit and Extension Units can be in any order. Additional 1431c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Extension Units connected to the main chain as single-unit branches are 1432c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * also supported. 1433c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1434c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_register_video(struct uvc_device *dev) 1435c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1436c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct video_device *vdev; 1437c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *term; 1438c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int found = 0, ret; 1439c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1440c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Check if the control interface matches the structure we expect. */ 1441c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(term, &dev->entities, list) { 1442c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_streaming *streaming; 1443c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1444ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (!UVC_ENTITY_IS_TERM(term) || !UVC_ENTITY_IS_OTERM(term)) 1445c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1446c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1447c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memset(&dev->video, 0, sizeof dev->video); 1448c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&dev->video.ctrl_mutex); 1449c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&dev->video.iterms); 1450c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&dev->video.extensions); 1451c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->video.oterm = term; 1452c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->video.dev = dev; 1453c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_scan_chain(&dev->video) < 0) 1454c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1455c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1456c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(streaming, &dev->streaming, list) { 1457ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (streaming->header.bTerminalLink == 1458ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart dev->video.sterm->id) { 1459c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->video.streaming = streaming; 1460c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart found = 1; 1461c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1462c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1463c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1464c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1465c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (found) 1466c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1467c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1468c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1469c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (!found) { 1470c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "No valid video chain found.\n"); 1471c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1472c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1473c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1474c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) { 1475c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Found a valid video chain ("); 1476c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(term, &dev->video.iterms, chain) { 1477c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk("%d", term->id); 1478c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term->chain.next != &dev->video.iterms) 1479c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(","); 1480c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1481c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" -> %d).\n", dev->video.oterm->id); 1482c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1483c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1484ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart /* Initialize the video buffers queue. */ 1485ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart uvc_queue_init(&dev->video.queue, dev->video.streaming->type); 1486ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1487c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Initialize the streaming interface with default streaming 1488c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * parameters. 1489c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1490c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((ret = uvc_video_init(&dev->video)) < 0) { 1491c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_ERR, "Failed to initialize the device " 1492c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "(%d).\n", ret); 1493c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ret; 1494c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1495c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1496c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Register the device with V4L. */ 1497c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart vdev = video_device_alloc(); 1498c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (vdev == NULL) 1499c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1500c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1501c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* We already hold a reference to dev->udev. The video device will be 1502c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * unregistered before the reference is released, so we don't need to 1503c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * get another one. 1504c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 15055e85e732f0ed56aa97a3ba26ac2b93ffe597a208Hans Verkuil vdev->parent = &dev->intf->dev; 1506c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart vdev->minor = -1; 1507c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart vdev->fops = &uvc_fops; 1508c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart vdev->release = video_device_release; 1509d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(vdev->name, dev->name, sizeof vdev->name); 1510c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1511c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Set the driver data before calling video_register_device, otherwise 1512c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * uvc_v4l2_open might race us. 1513c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1514c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->video.vdev = vdev; 1515c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart video_set_drvdata(vdev, &dev->video); 1516c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1517c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (video_register_device(vdev, VFL_TYPE_GRABBER, -1) < 0) { 1518c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->video.vdev = NULL; 1519c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart video_device_release(vdev); 1520c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1521c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1522c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1523c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1524c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1525c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1526c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1527c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Delete the UVC device. 1528c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1529c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Called by the kernel when the last reference to the uvc_device structure 1530c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * is released. 1531c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1532c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Unregistering the video devices is done here because every opened instance 1533c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * must be closed before the device can be unregistered. An alternative would 1534c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * have been to use another reference count for uvc_v4l2_open/uvc_release, and 1535c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * unregister the video devices on disconnect when that reference count drops 1536c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * to zero. 1537c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1538c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * As this function is called after or during disconnect(), all URBs have 1539c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * already been canceled by the USB core. There is no need to kill the 1540c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * interrupt URB manually. 1541c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1542c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartvoid uvc_delete(struct kref *kref) 1543c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1544c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = container_of(kref, struct uvc_device, kref); 1545c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct list_head *p, *n; 1546c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15472c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Unregister the video device. */ 1548c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_unregister_video(dev); 1549c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_put_intf(dev->intf); 1550c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_put_dev(dev->udev); 1551c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1552c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_status_cleanup(dev); 1553c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_ctrl_cleanup_device(dev); 1554c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1555c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_safe(p, n, &dev->entities) { 1556c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity; 1557c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart entity = list_entry(p, struct uvc_entity, list); 1558c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(entity); 1559c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1560c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1561c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_safe(p, n, &dev->streaming) { 1562c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_streaming *streaming; 1563c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming = list_entry(p, struct uvc_streaming, list); 1564c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_driver_release_interface(&uvc_driver.driver, 1565c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->intf); 1566c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_put_intf(streaming->intf); 1567c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->format); 1568c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->header.bmaControls); 1569c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming); 1570c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1571c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1572c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(dev); 1573c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1574c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1575c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_probe(struct usb_interface *intf, 1576c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const struct usb_device_id *id) 1577c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1578c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = interface_to_usbdev(intf); 1579c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev; 1580c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret; 1581c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1582c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (id->idVendor && id->idProduct) 1583c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " 1584c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "(%04x:%04x)\n", udev->devpath, id->idVendor, 1585c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id->idProduct); 1586c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1587c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", 1588c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devpath); 1589c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15902c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Allocate memory for the device and initialize it. */ 1591c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) 1592c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1593c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1594c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&dev->entities); 1595c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&dev->streaming); 1596c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kref_init(&dev->kref); 1597c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1598c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev = usb_get_dev(udev); 1599c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->intf = usb_get_intf(intf); 1600c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 1601c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->quirks = id->driver_info | uvc_quirks_param; 1602c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1603c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (udev->product != NULL) 1604d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(dev->name, udev->product, sizeof dev->name); 1605c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1606c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart snprintf(dev->name, sizeof dev->name, 1607c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "UVC Camera (%04x:%04x)", 1608c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idVendor), 1609c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idProduct)); 1610c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 16112c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Parse the Video Class control descriptor. */ 1612c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_parse_control(dev) < 0) { 1613c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " 1614c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "descriptors.\n"); 1615c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1616c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1617c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1618fba4578ee925110587ef9b8b6ddfabf2ce288071Laurent Pinchart uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", 1619c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->uvc_version >> 8, dev->uvc_version & 0xff, 1620c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->product ? udev->product : "<unnamed>", 1621c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idVendor), 1622c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idProduct)); 1623c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1624c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_quirks_param != 0) { 1625c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Forcing device quirks 0x%x by module " 1626c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "parameter for testing purpose.\n", uvc_quirks_param); 1627c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Please report required quirks to the " 1628c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "linux-uvc-devel mailing list.\n"); 1629c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1630c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 16312c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Initialize controls. */ 1632c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_ctrl_init_device(dev) < 0) 1633c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1634c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 16352c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Register the video devices. */ 1636c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_register_video(dev) < 0) 1637c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1638c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 16392c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Save our data pointer in the interface data. */ 1640c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_set_intfdata(intf, dev); 1641c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 16422c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Initialize the interrupt URB. */ 1643c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((ret = uvc_status_init(dev)) < 0) { 1644c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Unable to initialize the status " 1645c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "endpoint (%d), status interrupt will not be " 1646c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "supported.\n", ret); 1647c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1648c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1649c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); 1650c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1651c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1652c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pincharterror: 1653c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kref_put(&dev->kref, uvc_delete); 1654c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENODEV; 1655c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1656c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1657c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic void uvc_disconnect(struct usb_interface *intf) 1658c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1659c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 1660c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1661c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Set the USB interface data to NULL. This can be done outside the 1662c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * lock, as there's no other reader. 1663c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1664c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_set_intfdata(intf, NULL); 1665c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1666c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOSTREAMING) 1667c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return; 1668c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1669c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* uvc_v4l2_open() might race uvc_disconnect(). A static driver-wide 1670c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * lock is needed to prevent uvc_disconnect from releasing its 1671c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * reference to the uvc_device instance after uvc_v4l2_open() received 1672c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * the pointer to the device (video_devdata) but before it got the 1673c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * chance to increase the reference count (kref_get). 1674a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart * 1675a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart * Note that the reference can't be released with the lock held, 1676a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart * otherwise a AB-BA deadlock can occur with videodev_lock that 1677a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart * videodev acquires in videodev_open() and video_unregister_device(). 1678c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1679c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_lock(&uvc_driver.open_mutex); 1680c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->state |= UVC_DEV_DISCONNECTED; 1681c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_unlock(&uvc_driver.open_mutex); 1682a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart 1683a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart kref_put(&dev->kref, uvc_delete); 1684c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1685c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1686c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_suspend(struct usb_interface *intf, pm_message_t message) 1687c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1688c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 1689c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1690c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", 1691c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->cur_altsetting->desc.bInterfaceNumber); 1692c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1693c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Controls are cached on the fly so they don't need to be saved. */ 1694c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOCONTROL) 1695c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_status_suspend(dev); 1696c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1697c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (dev->video.streaming->intf != intf) { 1698c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB " 1699c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface mismatch.\n"); 1700c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1701c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1702c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1703c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_video_suspend(&dev->video); 1704c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1705c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17069b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int __uvc_resume(struct usb_interface *intf, int reset) 1707c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1708c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 1709c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1710c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", 1711c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->cur_altsetting->desc.bInterfaceNumber); 1712c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1713c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOCONTROL) { 17147564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil if (reset) { 17157564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil int ret = uvc_ctrl_resume_device(dev); 17167564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil 17177564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil if (ret < 0) 17187564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil return ret; 17197564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil } 1720c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1721c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_status_resume(dev); 1722c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1723c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1724c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (dev->video.streaming->intf != intf) { 1725c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB " 1726c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface mismatch.\n"); 1727c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1728c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1729c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1730c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_video_resume(&dev->video); 1731c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1732c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17339b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int uvc_resume(struct usb_interface *intf) 17349b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart{ 17359b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart return __uvc_resume(intf, 0); 17369b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart} 17379b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart 17389b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int uvc_reset_resume(struct usb_interface *intf) 17399b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart{ 17409b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart return __uvc_resume(intf, 1); 17419b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart} 17429b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart 1743c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 1744c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Driver initialization and cleanup 1745c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1746c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1747c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1748c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The Logitech cameras listed below have their interface class set to 1749c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * VENDOR_SPEC because they don't announce themselves as UVC devices, even 1750c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * though they are compliant. 1751c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1752c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct usb_device_id uvc_ids[] = { 1753c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Microsoft Lifecam NX-6000 */ 1754c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1755c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1756c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x045e, 1757c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x00f8, 1758c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1759c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1760c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1761c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1762c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Microsoft Lifecam VX-7000 */ 1763c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1764c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1765c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x045e, 1766c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x0723, 1767c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1768c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1769c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1770c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1771c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Fusion */ 1772c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1773c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1774c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1775c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c1, 1776c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1777c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1778c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1779c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Orbit MP */ 1780c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1781c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1782c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1783c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c2, 1784c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1785c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1786c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1787c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Pro for Notebook */ 1788c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1789c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1790c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1791c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c3, 1792c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1793c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1794c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1795c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Pro 5000 */ 1796c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1797c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1798c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1799c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c5, 1800c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1801c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1802c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1803c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam OEM Dell Notebook */ 1804c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1805c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1806c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1807c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c6, 1808c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1809c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1810c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1811c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam OEM Cisco VT Camera II */ 1812c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1813c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1814c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1815c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c7, 1816c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1817c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1818c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1819f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 1820f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1821f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1822f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .idVendor = 0x058f, 1823f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .idProduct = 0x3820, 1824f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1825f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceSubClass = 1, 1826f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceProtocol = 0, 1827f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1828c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Apple Built-In iSight */ 18292c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1830c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1831c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x05ac, 1832c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x8501, 18332c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 18342c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceSubClass = 1, 18352c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceProtocol = 0, 1836c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 1837c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | UVC_QUIRK_BUILTIN_ISIGHT }, 1838c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Genesys Logic USB 2.0 PC Camera */ 18392c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1840c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 18412c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .idVendor = 0x05e3, 18422c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .idProduct = 0x0505, 18432c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 18442c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceSubClass = 1, 18452c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceProtocol = 0, 18462c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 184750144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart /* ViMicro */ 184850144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_VENDOR 184950144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 185050144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .idVendor = 0x0ac8, 185150144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .idProduct = 0x0000, 185250144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 185350144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceSubClass = 1, 185450144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceProtocol = 0, 185550144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 1856c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* MT6227 */ 1857c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1858c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1859c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x0e8d, 1860c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x0004, 1861c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1862c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1863c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1864c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1865c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Syntek (HP Spartan) */ 1866c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1867c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1868c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x174f, 1869c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x5212, 1870c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1871c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1872c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 187325e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 1874562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart /* Syntek (Samsung Q310) */ 1875562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1876562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1877562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .idVendor = 0x174f, 1878562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .idProduct = 0x5931, 1879562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1880562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceSubClass = 1, 1881562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceProtocol = 0, 1882562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 1883f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart /* Syntek (Asus F9SG) */ 188425e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 188525e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 188625e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .idVendor = 0x174f, 188725e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .idProduct = 0x8a31, 188825e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 188925e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceSubClass = 1, 189025e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceProtocol = 0, 1891c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 1892c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Syntek (Asus U3S) */ 1893c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1894c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1895c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x174f, 1896c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x8a33, 1897c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1898c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1899c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1900c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 19010ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart /* Syntek (JAOtech Smart Terminal) */ 19020ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 19030ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 19040ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .idVendor = 0x174f, 19050ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .idProduct = 0x8a34, 19060ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 19070ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceSubClass = 1, 19080ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceProtocol = 0, 19090ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 19102f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart /* Lenovo Thinkpad SL500 */ 19112f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 19122f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 19132f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .idVendor = 0x17ef, 19142f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .idProduct = 0x480b, 19152f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 19162f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceSubClass = 1, 19172f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceProtocol = 0, 19182f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 1919c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Ecamm Pico iMage */ 1920c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1921c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1922c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x18cd, 1923c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0xcafe, 1924c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1925c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1926c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1927c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, 1928c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Bodelin ProScopeHR */ 1929c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1930c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_DEV_HI 1931c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1932c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x19ab, 1933c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x1000, 1934c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bcdDevice_hi = 0x0126, 1935c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1936c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1937c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1938c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STATUS_INTERVAL }, 1939c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* SiGma Micro USB Web Camera */ 1940c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1941c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1942c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x1c4f, 1943c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x3000, 1944c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1945c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1946c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1947c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 19482bdd29cf3d4d32e4371fbd6b27ea171f2c1f0836Laurent Pinchart | UVC_QUIRK_IGNORE_SELECTOR_UNIT 19492bdd29cf3d4d32e4371fbd6b27ea171f2c1f0836Laurent Pinchart | UVC_QUIRK_PRUNE_CONTROLS }, 1950c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Generic USB Video Class */ 1951c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, 1952c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart {} 1953c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 1954c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1955c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_DEVICE_TABLE(usb, uvc_ids); 1956c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1957c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstruct uvc_driver uvc_driver = { 1958c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver = { 1959c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "uvcvideo", 1960c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .probe = uvc_probe, 1961c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .disconnect = uvc_disconnect, 1962c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .suspend = uvc_suspend, 1963c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .resume = uvc_resume, 19649b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart .reset_resume = uvc_reset_resume, 1965c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .id_table = uvc_ids, 1966c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .supports_autosuspend = 1, 1967c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 1968c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 1969c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1970c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int __init uvc_init(void) 1971c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1972c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int result; 1973c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1974c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&uvc_driver.devices); 1975c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&uvc_driver.controls); 1976c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&uvc_driver.open_mutex); 1977c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&uvc_driver.ctrl_mutex); 1978c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1979c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_ctrl_init(); 1980c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1981c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart result = usb_register(&uvc_driver.driver); 1982c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (result == 0) 1983c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); 1984c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return result; 1985c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1986c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1987c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic void __exit uvc_cleanup(void) 1988c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1989c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_deregister(&uvc_driver.driver); 1990c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1991c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1992c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_init(uvc_init); 1993c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_exit(uvc_cleanup); 1994c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 19950fbd8ee6de6ac3d0b93c96da848c5bc3ccc1dc83Laurent Pinchartmodule_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); 19960fbd8ee6de6ac3d0b93c96da848c5bc3ccc1dc83Laurent PinchartMODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 1997c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); 1998c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_PARM_DESC(quirks, "Forced device quirks"); 1999c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); 2000c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_PARM_DESC(trace, "Trace level bitmask"); 2001c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2002c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_AUTHOR(DRIVER_AUTHOR); 2003c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_DESCRIPTION(DRIVER_DESC); 2004c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_LICENSE("GPL"); 2005c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_VERSION(DRIVER_VERSION); 2006f87086e302300fdff1bd32049deb7a7f3e3de7daHans Verkuil 2007