uvc_driver.c revision 9275b32bced808bd57bdf3884748ed1126ba90e0
1c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 2c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * uvc_driver.c -- USB Video Class driver 3c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 42c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * Copyright (C) 2005-2009 5c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Laurent Pinchart (laurent.pinchart@skynet.be) 6c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 7c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * This program is free software; you can redistribute it and/or modify 8c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * it under the terms of the GNU General Public License as published by 9c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * the Free Software Foundation; either version 2 of the License, or 10c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * (at your option) any later version. 11c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 12c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 13c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 15ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart * This driver aims to support video input and ouput devices compliant with the 16ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart * 'USB Video Class' specification. 17c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 18c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The driver doesn't support the deprecated v4l1 interface. It implements the 19c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * mmap capture method only, and doesn't do any image format conversion in 20c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * software. If your user-space application doesn't support YUYV or MJPEG, fix 21c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * it :-). Please note that the MJPEG data have been stripped from their 22c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Huffman tables (DHT marker), you will need to add it back if your JPEG 23c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * codec can't handle MJPEG data. 24c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 25c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 26c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/kernel.h> 27c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/list.h> 28c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/module.h> 295a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 30c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/usb.h> 31c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/videodev2.h> 32c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/vmalloc.h> 33c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <linux/wait.h> 34c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <asm/atomic.h> 359bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich#include <asm/unaligned.h> 36c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 37c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include <media/v4l2-common.h> 38c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 39c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#include "uvcvideo.h" 40c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 41c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_AUTHOR "Laurent Pinchart <laurent.pinchart@skynet.be>" 42c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_DESC "USB Video Class driver" 43c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#ifndef DRIVER_VERSION 44c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#define DRIVER_VERSION "v0.1.0" 45c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart#endif 46c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 47310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartunsigned int uvc_clock_param = CLOCK_MONOTONIC; 480fbd8ee6de6ac3d0b93c96da848c5bc3ccc1dc83Laurent Pinchartunsigned int uvc_no_drop_param; 4973de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchartstatic unsigned int uvc_quirks_param = -1; 50c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartunsigned int uvc_trace_param; 51b232a012adfea9f535702e8296ea6b76e691f436Laurent Pinchartunsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; 52c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 53c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 542c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * Video formats 55c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 56c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 57c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_format_desc uvc_fmts[] = { 58c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 59c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:2 (YUYV)", 60c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_YUY2, 61c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YUYV, 62c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 63c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 6468f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz .name = "YUV 4:2:2 (YUYV)", 6568f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, 6668f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz .fcc = V4L2_PIX_FMT_YUYV, 6768f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz }, 6868f194e027ecfbbc8d5515bc40787e542eed59e9Daniel Ritz { 69c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:0 (NV12)", 70c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_NV12, 71c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_NV12, 72c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 73c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 74c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "MJPEG", 75c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_MJPEG, 76c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_MJPEG, 77c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 78c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 79c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YVU 4:2:0 (YV12)", 80c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_YV12, 81c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YVU420, 82c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 83c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 84c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:0 (I420)", 85c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_I420, 86c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_YUV420, 87c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 88c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 89c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "YUV 4:2:2 (UYVY)", 90c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_UYVY, 91c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_UYVY, 92c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 93c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 9461421206833a4085d9bdf35b2b84cd9a67dfdfacLaurent Pinchart .name = "Greyscale (8-bit)", 95c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_Y800, 96c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_GREY, 97c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 98c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { 9961421206833a4085d9bdf35b2b84cd9a67dfdfacLaurent Pinchart .name = "Greyscale (16-bit)", 10061421206833a4085d9bdf35b2b84cd9a67dfdfacLaurent Pinchart .guid = UVC_GUID_FORMAT_Y16, 10161421206833a4085d9bdf35b2b84cd9a67dfdfacLaurent Pinchart .fcc = V4L2_PIX_FMT_Y16, 10261421206833a4085d9bdf35b2b84cd9a67dfdfacLaurent Pinchart }, 10361421206833a4085d9bdf35b2b84cd9a67dfdfacLaurent Pinchart { 104c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "RGB Bayer", 105c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .guid = UVC_GUID_FORMAT_BY8, 106c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .fcc = V4L2_PIX_FMT_SBGGR8, 107c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 108c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 109c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 110c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 111c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Utility functions 112c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 113c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 114c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstruct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, 115c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u8 epaddr) 116c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 117c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep; 118c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 119c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 120c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 121c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep = &alts->endpoint[i]; 122c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->desc.bEndpointAddress == epaddr) 123c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ep; 124c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 125c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 126c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 127c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 128c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 129c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) 130c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 131c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int len = ARRAY_SIZE(uvc_fmts); 132c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 133c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 134c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < len; ++i) { 135c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) 136c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return &uvc_fmts[i]; 137c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 138c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 139c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 140c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 141c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 142c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic __u32 uvc_colorspace(const __u8 primaries) 143c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 144c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart static const __u8 colorprimaries[] = { 145c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 0, 146c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SRGB, 147c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_470_SYSTEM_M, 148c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_470_SYSTEM_BG, 149c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SMPTE170M, 150c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart V4L2_COLORSPACE_SMPTE240M, 151c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }; 152c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 153c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (primaries < ARRAY_SIZE(colorprimaries)) 154c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return colorprimaries[primaries]; 155c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 156c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 157c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 158c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 159c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Simplify a fraction using a simple continued fraction decomposition. The 160c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * idea here is to convert fractions such as 333333/10000000 to 1/30 using 161c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 32 bit arithmetic only. The algorithm is not perfect and relies upon two 162c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * arbitrary parameters to remove non-significative terms from the simple 163c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * continued fraction decomposition. Using 8 and 333 for n_terms and threshold 164c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * respectively seems to give nice results. 165c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 166c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartvoid uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, 167c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int n_terms, unsigned int threshold) 168c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 169c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t *an; 170c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t x, y, r; 171c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n; 172c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 173c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); 174c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (an == NULL) 175c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return; 176c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 177c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Convert the fraction to a simple continued fraction. See 178c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * http://mathforum.org/dr.math/faq/faq.fractions.html 179c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Stop if the current term is bigger than or equal to the given 180c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * threshold. 181c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 182c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = *numerator; 183c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = *denominator; 184c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 185c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (n = 0; n < n_terms && y != 0; ++n) { 186c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart an[n] = x / y; 187c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (an[n] >= threshold) { 188c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (n < 2) 189c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n++; 190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 191c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 192c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 193c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart r = x - an[n] * y; 194c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = y; 195c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = r; 196c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 197c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 198c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Expand the simple continued fraction back to an integer fraction. */ 199c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = 0; 200c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = 1; 201c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 202c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = n; i > 0; --i) { 203c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart r = y; 204c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart y = an[i-1] * y + x; 205c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart x = r; 206c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 207c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 208c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *numerator = y; 209c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *denominator = x; 210c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(an); 211c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 212c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 213c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Convert a fraction to a frame interval in 100ns multiples. The idea here is 214c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * to compute numerator / denominator * 10000000 using 32 bit fixed point 215c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * arithmetic only. 216c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 217c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartuint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) 218c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 219c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uint32_t multiplier; 220c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 221c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Saturate the result if the operation would overflow. */ 222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (denominator == 0 || 223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart numerator/denominator >= ((uint32_t)-1)/10000000) 224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return (uint32_t)-1; 225c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Divide both the denominator and the multiplier by two until 227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * numerator * multiplier doesn't overflow. If anyone knows a better 228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * algorithm please let me know. 229c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart multiplier = 10000000; 231c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (numerator > ((uint32_t)-1)/multiplier) { 232c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart multiplier /= 2; 233c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart denominator /= 2; 234c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 235c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 236c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return denominator ? numerator * multiplier / denominator : 0; 237c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 238c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 239c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 240c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Terminal and unit management 241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 242c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 243c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) 244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity; 246c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(entity, &dev->entities, list) { 248c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity->id == id) 249c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 250c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 251c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 252c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 253c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 254c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 255c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, 256c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int id, struct uvc_entity *entity) 257c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 258c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i; 259c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 260c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (entity == NULL) 261c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart entity = list_entry(&dev->entities, struct uvc_entity, list); 262c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 263c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry_continue(entity, &dev->entities, list) { 2648ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart for (i = 0; i < entity->bNrInPins; ++i) 2658ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->baSourceID[i] == id) 266c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return entity; 267c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 268c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 269c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return NULL; 270c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 271c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2728e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) 2738e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 2748e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream; 2758e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 2768e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 2778e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (stream->header.bTerminalLink == id) 2788e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return stream; 2798e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 2808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 2818e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return NULL; 2828e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 2838e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 284c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 2858e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Descriptors parsing 286c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 287c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 288c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_format(struct uvc_device *dev, 289c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_streaming *streaming, struct uvc_format *format, 290c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u32 **intervals, unsigned char *buffer, int buflen) 291c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 292c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf = streaming->intf; 293c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = intf->cur_altsetting; 294c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_format_desc *fmtdesc; 295c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_frame *frame; 296c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *start = buffer; 297c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int interval; 298c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n; 299c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u8 ftype; 300c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 301c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->type = buffer[2]; 302c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->index = buffer[3]; 303c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 304c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 305b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_UNCOMPRESSED: 306b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_FRAME_BASED: 307b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; 308233548a2fd934a0220db8b1521c0bc88c82e5e53Laurent Pinchart if (buflen < n) { 309b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 310c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 311c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 312c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 313c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 314c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 315c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 316c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Find the format descriptor from its GUID. */ 317c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart fmtdesc = uvc_format_by_guid(&buffer[5]); 318c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 319c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (fmtdesc != NULL) { 320d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, fmtdesc->name, 321c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof format->name); 322c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = fmtdesc->fcc; 323c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 32436bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart uvc_printk(KERN_INFO, "Unknown video format %pUl\n", 32536bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart &buffer[5]); 32636bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart snprintf(format->name, sizeof(format->name), "%pUl\n", 32736bd883ef98ac6003ab6ec7b91f66d3fb2159318Laurent Pinchart &buffer[5]); 328c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = 0; 329c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 330c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 331c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = buffer[21]; 332b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { 333b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart ftype = UVC_VS_FRAME_UNCOMPRESSED; 334c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 335b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart ftype = UVC_VS_FRAME_FRAME_BASED; 336c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[27]) 337c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED; 338c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 339c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 340c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 341b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MJPEG: 342c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 11) { 343b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 344c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 345c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 346c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 347c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 348c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 349c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 350d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "MJPEG", sizeof format->name); 351c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = V4L2_PIX_FMT_MJPEG; 352c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED; 353c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = 0; 354b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart ftype = UVC_VS_FRAME_MJPEG; 355c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 356c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 357b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_DV: 358c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 9) { 359b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 360c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT error\n", 361c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 362c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 363c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 364c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 365c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 366c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[8] & 0x7f) { 367c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 0: 368d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "SD-DV", sizeof format->name); 369c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 370c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 1: 371d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "SDL-DV", sizeof format->name); 372c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 373c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 2: 374d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(format->name, "HD-DV", sizeof format->name); 375c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 376c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 377b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 378c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d: unknown DV format %u\n", 379c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 380c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, buffer[8]); 381c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 382c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 383c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 384d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", 385c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof format->name); 386c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 387c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->fcc = V4L2_PIX_FMT_DV; 388c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 389c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->bpp = 0; 390c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ftype = 0; 391c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 392c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Create a dummy frame descriptor. */ 393c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame = &format->frame[0]; 394c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memset(&format->frame[0], 0, sizeof format->frame[0]); 395c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIntervalType = 1; 396c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 1; 397c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwFrameInterval = *intervals; 398c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *(*intervals)++ = 1; 399c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->nframes = 1; 400c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 401c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 402b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MPEG2TS: 403b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_STREAM_BASED: 404c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Not supported yet. */ 405c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 406b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 407c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d unsupported format %u\n", 408c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber, 409c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[2]); 410c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 411c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 412c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 413c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); 414c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 415c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 416c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 417c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 418c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the frame descriptors. Only uncompressed, MJPEG and frame 419c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * based formats have frame descriptors. 420c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 421c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 422c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart buffer[2] == ftype) { 423078f8947926732a526fb280c0f3a8920bf173b9cLaurent Pinchart frame = &format->frame[format->nframes]; 424b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (ftype != UVC_VS_FRAME_FRAME_BASED) 425c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen > 25 ? buffer[25] : 0; 426c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 427c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen > 21 ? buffer[21] : 0; 428c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 429c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = n ? n : 3; 430c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 431c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 26 + 4*n) { 432b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 433c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FRAME error\n", dev->udev->devnum, 434c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 435c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 436c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 437c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 438c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIndex = buffer[3]; 439c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bmCapabilities = buffer[4]; 4409bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->wWidth = get_unaligned_le16(&buffer[5]); 4419bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->wHeight = get_unaligned_le16(&buffer[7]); 4429bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); 4439bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); 444b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (ftype != UVC_VS_FRAME_FRAME_BASED) { 445c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwMaxVideoFrameBufferSize = 4469bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le32(&buffer[17]); 447c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 4489bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le32(&buffer[21]); 449c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIntervalType = buffer[25]; 450c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 451c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwMaxVideoFrameBufferSize = 0; 452c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 4539bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le32(&buffer[17]); 454c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->bFrameIntervalType = buffer[21]; 455c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 456c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwFrameInterval = *intervals; 457c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 458c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize 459c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * completely. Observed behaviours range from setting the 4602c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * value to 1.1x the actual frame size to hardwiring the 461c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 16 low bits to 0. This results in a higher than necessary 462c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * memory usage as well as a wrong image size information. For 463c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * uncompressed formats this can be fixed by computing the 464c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * value from the frame size. 465c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 466c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) 467c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwMaxVideoFrameBufferSize = format->bpp 468c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * frame->wWidth * frame->wHeight / 8; 469c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 470c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Some bogus devices report dwMinFrameInterval equal to 471c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * dwMaxFrameInterval and have dwFrameIntervalStep set to 472c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * zero. Setting all null intervals to 1 fixes the problem and 4732c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * some other divisions by zero that could happen. 474c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 475c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < n; ++i) { 4769bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich interval = get_unaligned_le32(&buffer[26+4*i]); 477c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart *(*intervals)++ = interval ? interval : 1; 478c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 479c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 480c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure that the default frame interval stays between 481c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * the boundaries. 482c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 483c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n -= frame->bFrameIntervalType ? 1 : 2; 484c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval = 485c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart min(frame->dwFrameInterval[n], 486c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart max(frame->dwFrameInterval[0], 487c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->dwDefaultFrameInterval)); 488c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 489c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", 490c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame->wWidth, frame->wHeight, 491c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10000000/frame->dwDefaultFrameInterval, 492c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart (100000000/frame->dwDefaultFrameInterval)%10); 493c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 494078f8947926732a526fb280c0f3a8920bf173b9cLaurent Pinchart format->nframes++; 495c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 496c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 497c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 498c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 499c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 500c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { 501c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 502c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 503c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 504c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 505c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 506c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart buffer[2] == UVC_VS_COLORFORMAT) { 507c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 6) { 508b2d9cc4226fa512aa36fd78738f5069dfce0583dLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 509c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d COLORFORMAT error\n", 510c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 511c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 512c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 513c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 514c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 515c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->colorspace = uvc_colorspace(buffer[3]); 516c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 517c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 518c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 519c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 520c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 521c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return buffer - start; 522c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 523c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 524c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_streaming(struct uvc_device *dev, 525c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf) 526c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 527c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_streaming *streaming = NULL; 528c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_format *format; 529c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_frame *frame; 530c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = &intf->altsetting[0]; 531c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned char *_buffer, *buffer = alts->extra; 532c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int _buflen, buflen = alts->extralen; 533c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int nformats = 0, nframes = 0, nintervals = 0; 534c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int size, i, n, p; 535c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u32 *interval; 536c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u16 psize; 537c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret = -EINVAL; 538c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 539c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass 540b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart != UVC_SC_VIDEOSTREAMING) { 541c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " 542c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "video streaming interface\n", dev->udev->devnum, 543c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->altsetting[0].desc.bInterfaceNumber); 544c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 545c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 546c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 547c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 548c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " 549c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "claimed\n", dev->udev->devnum, 550c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->altsetting[0].desc.bInterfaceNumber); 551c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 552c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 553c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 554c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming = kzalloc(sizeof *streaming, GFP_KERNEL); 555c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (streaming == NULL) { 556c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_driver_release_interface(&uvc_driver.driver, intf); 557c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 558c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 559c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 560c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&streaming->mutex); 56135f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart streaming->dev = dev; 562c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->intf = usb_get_intf(intf); 563c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 564c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 565c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* The Pico iMage webcam has its class-specific interface descriptors 566c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * after the endpoint descriptors. 567c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 568c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen == 0) { 569c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 570c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep = &alts->endpoint[i]; 571c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 572c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->extralen == 0) 573c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 574c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 575c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep->extralen > 2 && 576c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep->extra[1] == USB_DT_CS_INTERFACE) { 577c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "trying extra data " 578c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "from endpoint %u.\n", i); 579c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer = alts->endpoint[i].extra; 580c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen = alts->endpoint[i].extralen; 581c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 582c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 583c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 584c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 585c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 586c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Skip the standard interface descriptors. */ 587c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 588c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 589c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 590c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 591c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 592c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen <= 2) { 593c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " 594c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface descriptors found.\n"); 595c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 596c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 597c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 598c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the header descriptor. */ 599ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart switch (buffer[2]) { 600b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_OUTPUT_HEADER: 601ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 602ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart size = 9; 603ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 604ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 605b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_INPUT_HEADER: 606ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 607ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart size = 13; 608ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 609ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 610ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart default: 611c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 612ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "%d HEADER descriptor not found.\n", dev->udev->devnum, 613ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart alts->desc.bInterfaceNumber); 614c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 615ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 616c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 617ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart p = buflen >= 4 ? buffer[3] : 0; 618ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart n = buflen >= size ? buffer[size-1] : 0; 619ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 620ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (buflen < size + p*n) { 621ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 622ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart "interface %d HEADER descriptor is invalid.\n", 623ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber); 624ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart goto error; 625ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 626c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 627ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bNumFormats = p; 628ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bEndpointAddress = buffer[6]; 629b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (buffer[2] == UVC_VS_INPUT_HEADER) { 630c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bmInfo = buffer[7]; 631c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTerminalLink = buffer[8]; 632c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bStillCaptureMethod = buffer[9]; 633c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTriggerSupport = buffer[10]; 634c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bTriggerUsage = buffer[11]; 635c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } else { 636ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bTerminalLink = buffer[7]; 637ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 638ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart streaming->header.bControlSize = n; 639ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 6400b21d55f8904ff3d52262e91867f9eb2c0b472f3Julia Lawall streaming->header.bmaControls = kmemdup(&buffer[size], p * n, 6410b21d55f8904ff3d52262e91867f9eb2c0b472f3Julia Lawall GFP_KERNEL); 642ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart if (streaming->header.bmaControls == NULL) { 643ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart ret = -ENOMEM; 644c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 645c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 646c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 647c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 648c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 649c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 650c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buffer = buffer; 651c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buflen = buflen; 652c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 653c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Count the format and frame descriptors. */ 654042e143e8b21dca7c84e32c2e647980cb9101224Laurent Pinchart while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { 655c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (_buffer[2]) { 656b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_UNCOMPRESSED: 657b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MJPEG: 658b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_FRAME_BASED: 659c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nformats++; 660c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 661c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 662b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_DV: 663c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* DV format has no frame descriptor. We will create a 664c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * dummy frame descriptor with a dummy frame interval. 665c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 666c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nformats++; 667c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 668c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals++; 669c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 670c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 671b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MPEG2TS: 672b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_STREAM_BASED: 673c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 674c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d FORMAT %u is not supported.\n", 675c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, 676c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, _buffer[2]); 677c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 678c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 679b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FRAME_UNCOMPRESSED: 680b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FRAME_MJPEG: 681c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 682c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (_buflen > 25) 683c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals += _buffer[25] ? _buffer[25] : 3; 684c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 685c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 686b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FRAME_FRAME_BASED: 687c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nframes++; 688c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (_buflen > 21) 689c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart nintervals += _buffer[21] ? _buffer[21] : 3; 690c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 691c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 692c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 693c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buflen -= _buffer[0]; 694c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart _buffer += _buffer[0]; 695c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 696c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 697c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (nformats == 0) { 698c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 699c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "%d has no supported formats defined.\n", 700c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber); 701c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 702c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 703c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 704c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart size = nformats * sizeof *format + nframes * sizeof *frame 705c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart + nintervals * sizeof *interval; 706c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format = kzalloc(size, GFP_KERNEL); 707c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (format == NULL) { 708c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ret = -ENOMEM; 709c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 710c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 711c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 712c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame = (struct uvc_frame *)&format[nformats]; 713c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart interval = (__u32 *)&frame[nframes]; 714c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 715c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->format = format; 716c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->nformats = nformats; 717c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 718c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the format descriptors. */ 719042e143e8b21dca7c84e32c2e647980cb9101224Laurent Pinchart while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { 720c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 721b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_UNCOMPRESSED: 722b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_MJPEG: 723b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_DV: 724b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VS_FORMAT_FRAME_BASED: 725c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format->frame = frame; 726c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ret = uvc_parse_format(dev, streaming, format, 727c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart &interval, buffer, buflen); 728c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ret < 0) 729c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 730c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 731c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart frame += format->nframes; 732c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart format++; 733c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 734c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= ret; 735c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += ret; 736c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 737c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 738c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 739c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 740c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 741c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 742c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 743c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 744c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 745c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 746c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart if (buflen) 747c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 748c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart "%d has %u bytes of trailing descriptor garbage.\n", 749c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); 750c4ed8c66d79d707d89fe732ff5b97739edf1ba62Laurent Pinchart 751c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the alternate settings to find the maximum bandwidth. */ 752c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < intf->num_altsetting; ++i) { 753c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep; 754c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts = &intf->altsetting[i]; 755c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart ep = uvc_find_endpoint(alts, 756c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->header.bEndpointAddress); 757c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (ep == NULL) 758c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 759c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 760c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart psize = le16_to_cpu(ep->desc.wMaxPacketSize); 761c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); 762c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (psize > streaming->maxpsize) 763c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart streaming->maxpsize = psize; 764c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 765c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 76635f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart list_add_tail(&streaming->list, &dev->streams); 767c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 768c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 769c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pincharterror: 770c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_driver_release_interface(&uvc_driver.driver, intf); 771c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_put_intf(intf); 772c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->format); 773c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming->header.bmaControls); 774c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart kfree(streaming); 775c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ret; 776c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 777c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 7788ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchartstatic struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, 7798ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unsigned int num_pads, unsigned int extra_size) 7808ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart{ 7818ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart struct uvc_entity *entity; 7828ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unsigned int num_inputs; 7838ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unsigned int size; 7848ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7858ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; 7868ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart size = sizeof(*entity) + extra_size + num_inputs; 7878ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity = kzalloc(size, GFP_KERNEL); 7888ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity == NULL) 7898ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart return NULL; 7908ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7918ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->id = id; 7928ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->type = type; 7938ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7948ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->bNrInPins = num_inputs; 7958ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart entity->baSourceID = ((__u8 *)entity) + sizeof(*entity) + extra_size; 7968ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 7978ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart return entity; 7988ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart} 7998ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 800c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* Parse vendor-specific extensions. */ 801c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_vendor_control(struct uvc_device *dev, 802c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *buffer, int buflen) 803c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 804c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = dev->udev; 805c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 806c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *unit; 807c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int n, p; 808c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int handled = 0; 809c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 810c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 811c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart case 0x046d: /* Logitech */ 812c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[1] != 0x41 || buffer[2] != 0x01) 813c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 814c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 815c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech implements several vendor specific functions 816c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * through vendor specific extension units (LXU). 817c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 818c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The LXU descriptors are similar to XU descriptors 819c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * (see "USB Device Video Class for Video Devices", section 820c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 3.7.2.6 "Extension Unit Descriptor") with the following 821c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * differences: 822c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 823c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 824c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 0 bLength 1 Number 825c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Size of this descriptor, in bytes: 24+p+n*2 826c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 827c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 23+p+n bmControlsType N Bitmap 828c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Individual bits in the set are defined: 829c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 0: Absolute 830c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 1: Relative 831c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 832c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * This bitset is mapped exactly the same as bmControls. 833c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 834c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 23+p+n*2 bReserved 1 Boolean 835c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 836c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 24+p+n*2 iExtension 1 Index 837c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Index of a string descriptor that describes this 838c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * extension unit. 839c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * ---------------------------------------------------------- 840c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 841c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 22 ? buffer[21] : 0; 842c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 25 + p ? buffer[22+p] : 0; 843c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 844c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 25 + p + 2*n) { 845c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 846c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d EXTENSION_UNIT error\n", 847c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 848c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 849c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 850c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 8518ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], 8528ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart p + 1, 2*n); 853c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 854c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 855c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 856c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 857c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bNumControls = buffer[20]; 8588ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[22], p); 859c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bControlSize = buffer[22+p]; 8608ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); 8618ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) 8628ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart + n; 863c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 864c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 865c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[24+p+2*n] != 0) 866c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[24+p+2*n], unit->name, 867c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 868c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 869c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Extension %u", buffer[3]); 870c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 871c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 872c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart handled = 1; 873c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 874c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 875c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 876c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return handled; 877c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 878c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 879c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_standard_control(struct uvc_device *dev, 880c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const unsigned char *buffer, int buflen) 881c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 882c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = dev->udev; 883c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *unit, *term; 884c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_interface *intf; 885c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 886c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned int i, n, p, len; 887c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart __u16 type; 888c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 889c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (buffer[2]) { 890b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_HEADER: 891c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 12 ? buffer[11] : 0; 892c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 893c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 12 || buflen < 12 + n) { 894c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 895c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d HEADER error\n", udev->devnum, 896c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber); 897c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 898c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 899c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 9009bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich dev->uvc_version = get_unaligned_le16(&buffer[3]); 9019bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich dev->clock_frequency = get_unaligned_le32(&buffer[7]); 902c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 903c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse all USB Video Streaming interfaces. */ 904c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart for (i = 0; i < n; ++i) { 905c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf = usb_ifnum_to_if(udev, buffer[12+i]); 906c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (intf == NULL) { 907c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d " 908c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d doesn't exists\n", 909c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, i); 910c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 911c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 912c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 913c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_parse_streaming(dev, intf); 914c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 915c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 916c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 917b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_INPUT_TERMINAL: 918c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 8) { 919c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 920c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL error\n", 921c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 922c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 923c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 924c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 925c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure the terminal type MSB is not null, otherwise it 926c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * could be confused with a unit. 927c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 9289bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich type = get_unaligned_le16(&buffer[4]); 929c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((type & 0xff00) == 0) { 930c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 931c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL %d has invalid " 932c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "type 0x%04x, skipping\n", udev->devnum, 933c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, 934c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[3], type); 935c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 936c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 937c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 938c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = 0; 939c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = 0; 940c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 8; 941c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 942b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (type == UVC_ITT_CAMERA) { 943c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 15 ? buffer[14] : 0; 944c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 15; 945c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 946b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 947c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 9 ? buffer[8] : 0; 948c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 10 + n ? buffer[9+n] : 0; 949c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart len = 10; 950c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 951c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 952c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < len + n + p) { 953c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 954c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d INPUT_TERMINAL error\n", 955c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 956c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 957c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 958c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 9598ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], 9608ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 1, n + p); 961c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL) 962c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 963c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 964b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 965c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.bControlSize = n; 966c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.bmControls = (__u8 *)term + sizeof *term; 967c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wObjectiveFocalLengthMin = 9689bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[8]); 969c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wObjectiveFocalLengthMax = 9709bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[10]); 971c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->camera.wOcularFocalLength = 9729bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[12]); 973c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->camera.bmControls, &buffer[15], n); 974b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart } else if (UVC_ENTITY_TYPE(term) == 975b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_ITT_MEDIA_TRANSPORT_INPUT) { 976c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bControlSize = n; 977c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bmControls = (__u8 *)term + sizeof *term; 978c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bTransportModeSize = p; 979c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart term->media.bmTransportModes = (__u8 *)term 980c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart + sizeof *term + n; 981c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->media.bmControls, &buffer[9], n); 982c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(term->media.bmTransportModes, &buffer[10+n], p); 983c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 984c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 985c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[7] != 0) 986c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[7], term->name, 987c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof term->name); 988b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 989c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Camera %u", buffer[3]); 990b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 991c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Media %u", buffer[3]); 992c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 993c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Input %u", buffer[3]); 994c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 995c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&term->list, &dev->entities); 996c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 997c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 998b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_OUTPUT_TERMINAL: 999c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 9) { 1000c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1001c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d OUTPUT_TERMINAL error\n", 1002c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1003c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1004c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1005c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1006c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Make sure the terminal type MSB is not null, otherwise it 1007c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * could be confused with a unit. 1008c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 10099bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich type = get_unaligned_le16(&buffer[4]); 1010c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((type & 0xff00) == 0) { 1011c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1012c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d OUTPUT_TERMINAL %d has invalid " 1013c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "type 0x%04x, skipping\n", udev->devnum, 1014c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart alts->desc.bInterfaceNumber, buffer[3], type); 1015c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1016c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1017c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10188ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], 10198ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart 1, 0); 1020c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL) 1021c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1022c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10238ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(term->baSourceID, &buffer[7], 1); 1024c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1025c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[8] != 0) 1026c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[8], term->name, 1027c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof term->name); 1028c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1029c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(term->name, "Output %u", buffer[3]); 1030c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1031c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&term->list, &dev->entities); 1032c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1033c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1034b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_SELECTOR_UNIT: 1035c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 5 ? buffer[4] : 0; 1036c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1037c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 5 || buflen < 6 + p) { 1038c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1039c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d SELECTOR_UNIT error\n", 1040c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1041c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1042c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1043c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10448ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); 1045c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1046c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1047c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10488ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[5], p); 1049c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1050c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[5+p] != 0) 1051c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[5+p], unit->name, 1052c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1053c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1054c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Selector %u", buffer[3]); 1055c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1056c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1057c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1058c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1059b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_PROCESSING_UNIT: 1060c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 8 ? buffer[7] : 0; 1061c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = dev->uvc_version >= 0x0110 ? 10 : 9; 1062c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1063c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < p + n) { 1064c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1065c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d PROCESSING_UNIT error\n", 1066c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1067c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1068c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1069c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10708ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); 1071c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1072c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1073c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 10748ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[4], 1); 1075c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.wMaxMultiplier = 10769bc6218dc1dc7bd421f3d141241c8e0e70c4e92bMichael Hennerich get_unaligned_le16(&buffer[5]); 1077c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bControlSize = buffer[7]; 1078c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bmControls = (__u8 *)unit + sizeof *unit; 1079c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->processing.bmControls, &buffer[8], n); 1080c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (dev->uvc_version >= 0x0110) 1081c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->processing.bmVideoStandards = buffer[9+n]; 1082c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1083c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[8+n] != 0) 1084c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[8+n], unit->name, 1085c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1086c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1087c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Processing %u", buffer[3]); 1088c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1089c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1090c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1091c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1092b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_EXTENSION_UNIT: 1093c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart p = buflen >= 22 ? buffer[21] : 0; 1094c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart n = buflen >= 24 + p ? buffer[22+p] : 0; 1095c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1096c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buflen < 24 + p + n) { 1097c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1098c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "interface %d EXTENSION_UNIT error\n", 1099c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devnum, alts->desc.bInterfaceNumber); 1100c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -EINVAL; 1101c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1102c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 11038ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); 1104c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (unit == NULL) 1105c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1106c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1107c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 1108c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bNumControls = buffer[20]; 11098ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart memcpy(unit->baSourceID, &buffer[22], p); 1110c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unit->extension.bControlSize = buffer[22+p]; 11118ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart unit->extension.bmControls = (__u8 *)unit + sizeof *unit; 1112c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart memcpy(unit->extension.bmControls, &buffer[23+p], n); 1113c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1114c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (buffer[23+p+n] != 0) 1115c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_string(udev, buffer[23+p+n], unit->name, 1116c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sizeof unit->name); 1117c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1118c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart sprintf(unit->name, "Extension %u", buffer[3]); 1119c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1120c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_add_tail(&unit->list, &dev->entities); 1121c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1122c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1123c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 1124c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " 1125c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "descriptor (%u)\n", buffer[2]); 1126c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1127c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1128c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1129c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1130c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1131c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1132c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_parse_control(struct uvc_device *dev) 1133c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1134c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_interface *alts = dev->intf->cur_altsetting; 1135c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart unsigned char *buffer = alts->extra; 1136c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int buflen = alts->extralen; 1137c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret; 1138c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1139c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Parse the default alternate setting only, as the UVC specification 1140c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * defines a single alternate setting, the default alternate setting 1141c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * zero. 1142c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1143c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1144c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (buflen > 2) { 1145c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_parse_vendor_control(dev, buffer, buflen) || 1146c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer[1] != USB_DT_CS_INTERFACE) 1147c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto next_descriptor; 1148c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1149c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) 1150c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return ret; 1151c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1152c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartnext_descriptor: 1153c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buflen -= buffer[0]; 1154c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart buffer += buffer[0]; 1155c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1156c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1157538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart /* Check if the optional status endpoint is present. Built-in iSight 1158538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * webcams have an interrupt endpoint but spit proprietary data that 1159538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * don't conform to the UVC status endpoint messages. Don't try to 1160538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart * handle the interrupt endpoint for those cameras. 1161538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart */ 1162538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart if (alts->desc.bNumEndpoints == 1 && 1163538e7a004bf960c96c7e9eb836b59989eb5f5b7fLaurent Pinchart !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1164c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_host_endpoint *ep = &alts->endpoint[0]; 1165c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_endpoint_descriptor *desc = &ep->desc; 1166c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1167c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (usb_endpoint_is_int_in(desc) && 1168c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1169c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart desc->bInterval != 0) { 1170c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " 1171c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "(addr %02x).\n", desc->bEndpointAddress); 1172c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->int_ep = ep; 1173c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1174c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1175c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1176c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1177c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1178c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1179c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 11808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * UVC device scan 1181c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1182c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1183c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1184c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1185c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * and containing the following units: 1186c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 11878e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * - one or more Output Terminals (USB Streaming or Display) 1188c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero or one Processing Unit 11898e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * - zero, one or more single-input Selector Units 1190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero or one multiple-input Selector Units, provided all inputs are 1191c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * connected to input terminals 1192c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * - zero, one or mode single-input Extension Units 11932c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart * - one or more Input Terminals (Camera, External or USB Streaming) 1194c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 11958e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * The terminal and units must match on of the following structures: 11968e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * 11978e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 11988e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 11998e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 12008e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * 12018e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * +---------+ +---------+ -> OTT_*(0) 12028e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 12038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * +---------+ +---------+ -> OTT_*(n) 12048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * 12058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * The Processing Unit and Extension Units can be in any order. Additional 12068e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Extension Units connected to the main chain as single-unit branches are 12078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * also supported. Single-input Selector Units are ignored. 1208c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 12098e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1210c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity) 1211c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1212c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (UVC_ENTITY_TYPE(entity)) { 1213b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_EXTENSION_UNIT: 1214c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1215c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- XU %d", entity->id); 1216c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12178ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->bNrInPins != 1) { 1218c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " 1219c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "than 1 input pin.\n", entity->id); 1220c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1221c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1225b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_PROCESSING_UNIT: 1226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- PU %d", entity->id); 1228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12298e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (chain->processing != NULL) { 1230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found multiple " 1231c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "Processing Units in chain.\n"); 1232c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1233c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1234c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12358e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->processing = entity; 1236c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1237c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1238b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_SELECTOR_UNIT: 1239c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1240c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- SU %d", entity->id); 1241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1242c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Single-input selector units are ignored. */ 12438ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->bNrInPins == 1) 1244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12468e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (chain->selector != NULL) { 1247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " 1248c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "Units in chain.\n"); 1249c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1250c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1251c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12528e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->selector = entity; 1253c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1254c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1255b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_ITT_VENDOR_SPECIFIC: 1256b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_ITT_CAMERA: 1257b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1258c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1259c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- IT %d\n", entity->id); 1260c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1261c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1262c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1263b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_TT_STREAMING: 12644057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (UVC_ENTITY_IS_ITERM(entity)) { 12654057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 12664057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart printk(" <- IT %d\n", entity->id); 12674057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart } else { 12684057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 12694057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart printk(" OT %d", entity->id); 1270ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 1271ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1272ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart break; 1273ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 1274c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart default: 1275c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " 1276c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); 1277c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1278c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1279c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12806241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&entity->chain, &chain->entities); 1281c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1282c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1283c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 12848e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1285c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity, struct uvc_entity *prev) 1286c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1287c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *forward; 1288c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int found; 1289c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1290c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Forward scan */ 1291c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward = NULL; 1292c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart found = 0; 1293c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1294c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart while (1) { 12958e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart forward = uvc_entity_by_reference(chain->dev, entity->id, 1296c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart forward); 1297c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (forward == NULL) 1298c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 12998e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (forward == prev) 1300c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1301c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13028e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart switch (UVC_ENTITY_TYPE(forward)) { 13038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_VC_EXTENSION_UNIT: 13048ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (forward->bNrInPins != 1) { 13058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " 13068e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "has more than 1 input pin.\n", 13078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart entity->id); 13088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 13098e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 1310c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13116241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&forward->chain, &chain->entities); 13128e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) { 13138e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (!found) 13148e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" (->"); 13158e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 13168e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" XU %d", forward->id); 13178e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart found = 1; 13188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 13198e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart break; 13208e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 13218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_OTT_VENDOR_SPECIFIC: 13228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_OTT_DISPLAY: 13238e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 13248e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart case UVC_TT_STREAMING: 13258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (UVC_ENTITY_IS_ITERM(forward)) { 13268e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Unsupported input " 13278e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "terminal %u.\n", forward->id); 13288e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 13298e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 1330c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13316241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&forward->chain, &chain->entities); 13328e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) { 13338e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (!found) 13348e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" (->"); 13358e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 13368e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart printk(" OT %d", forward->id); 13378e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart found = 1; 13388e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 13398e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart break; 1340c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1341c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1342c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (found) 1343c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(")"); 1344c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1345c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1346c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1347c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13488e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain_backward(struct uvc_video_chain *chain, 13494057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart struct uvc_entity **_entity) 1350c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 13514057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart struct uvc_entity *entity = *_entity; 1352c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *term; 13534057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart int id = -EINVAL, i; 1354c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1355c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart switch (UVC_ENTITY_TYPE(entity)) { 1356b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_EXTENSION_UNIT: 1357b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_PROCESSING_UNIT: 13588ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = entity->baSourceID[0]; 1359c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1360c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1361b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart case UVC_VC_SELECTOR_UNIT: 1362c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Single-input selector units are ignored. */ 13638ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart if (entity->bNrInPins == 1) { 13648ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = entity->baSourceID[0]; 1365c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 1366c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1367c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1368c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1369c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" <- IT"); 1370c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13718e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->selector = entity; 13728ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart for (i = 0; i < entity->bNrInPins; ++i) { 13738ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = entity->baSourceID[i]; 13748e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart term = uvc_entity_by_id(chain->dev, id); 1375c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1376c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " 1377c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "input %d isn't connected to an " 1378c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "input terminal\n", entity->id, i); 1379c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1380c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1381c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1382c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1383c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(" %d", term->id); 1384c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 13856241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_add_tail(&term->chain, &chain->entities); 13868e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_scan_chain_forward(chain, term, entity); 1387c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1388c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1389c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_trace_param & UVC_TRACE_PROBE) 1390c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk("\n"); 1391c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1392c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id = 0; 1393c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart break; 13944057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart 13954057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_ITT_VENDOR_SPECIFIC: 13964057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_ITT_CAMERA: 13974057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_ITT_MEDIA_TRANSPORT_INPUT: 13984057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_OTT_VENDOR_SPECIFIC: 13994057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_OTT_DISPLAY: 14004057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 14014057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart case UVC_TT_STREAMING: 14028ca5a639f4f3eb8958a7e270fcff7516374637a5Laurent Pinchart id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 14034057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart break; 1404c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1405c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14064057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (id <= 0) { 14074057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart *_entity = NULL; 14084057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return id; 14094057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart } 14104057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart 14114057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart entity = uvc_entity_by_id(chain->dev, id); 14124057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (entity == NULL) { 14134057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found reference to " 14144057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart "unknown entity %d.\n", id); 14154057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return -EINVAL; 14164057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart } 14174057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart 14184057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart *_entity = entity; 14194057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return 0; 1420c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1421c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_scan_chain(struct uvc_video_chain *chain, 14234057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart struct uvc_entity *term) 1424c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1425c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *entity, *prev; 1426c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14274057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); 1428ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart 14294057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart entity = term; 14304057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart prev = NULL; 14318e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14324057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart while (entity != NULL) { 14334057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart /* Entity must not be part of an existing chain */ 14348e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (entity->chain.next || entity->chain.prev) { 14358e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_DESCR, "Found reference to " 14364057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart "entity %d already in chain.\n", entity->id); 14378e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 1438c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1439c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1440c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Process entity */ 14418e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_scan_chain_entity(chain, entity) < 0) 14428e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 1443c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1444c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Forward scan */ 14458e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_scan_chain_forward(chain, entity, prev) < 0) 14468e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -EINVAL; 1447c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1448c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Backward scan */ 14494057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart prev = entity; 14504057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart if (uvc_scan_chain_backward(chain, &entity) < 0) 14514057ac6ca9a77c4275b34b5925ab5c99557913b1Laurent Pinchart return -EINVAL; 1452c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1453c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14548e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 14558e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 14568e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14576241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchartstatic unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 14586241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart char *buffer) 14598e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 14608e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_entity *term; 14618e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart unsigned int nterms = 0; 14628e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart char *p = buffer; 14638e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14648e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(term, terms, chain) { 14656241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart if (!UVC_ENTITY_IS_TERM(term) || 14666241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart UVC_TERM_DIRECTION(term) != dir) 14676241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart continue; 14686241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart 14696241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart if (nterms) 14708e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart p += sprintf(p, ","); 14716241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart if (++nterms >= 4) { 14726241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart p += sprintf(p, "..."); 14736241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart break; 14748e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 14756241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart p += sprintf(p, "%u", term->id); 1476ff924203c9e4a5bc218143bc37182851185f4e5fLaurent Pinchart } 1477c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 14788e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return p - buffer; 14798e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 14808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14818e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic const char *uvc_print_chain(struct uvc_video_chain *chain) 14828e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 14838e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart static char buffer[43]; 14848e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart char *p = buffer; 14858e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14866241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 14878e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart p += sprintf(p, " -> "); 14886241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 14898e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 14908e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return buffer; 1491c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1492c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1493c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 149435f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart * Scan the device for video chains and register video devices. 1495c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * 14968e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Chains are scanned starting at their output terminals and walked backwards. 1497c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 149835f02a681b72ece756cf005e17f305a72329c140Laurent Pinchartstatic int uvc_scan_device(struct uvc_device *dev) 1499c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 15008e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_video_chain *chain; 1501c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_entity *term; 1502c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1503c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart list_for_each_entry(term, &dev->entities, list) { 15048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (!UVC_ENTITY_IS_OTERM(term)) 1505c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1506c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* If the terminal is already included in a chain, skip it. 15088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * This can happen for chains that have multiple output 15098e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * terminals, where all output terminals beside the first one 15108e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * will be inserted in the chain in forward scans. 15118e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 15128e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (term->chain.next || term->chain.prev) 1513c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart continue; 1514c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15158e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain = kzalloc(sizeof(*chain), GFP_KERNEL); 15168e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (chain == NULL) 15178e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -ENOMEM; 15188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15196241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart INIT_LIST_HEAD(&chain->entities); 15208e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart mutex_init(&chain->ctrl_mutex); 15218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart chain->dev = dev; 15228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15238e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_scan_chain(chain, term) < 0) { 15248e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart kfree(chain); 15258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 1526c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 15278e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15288e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", 15298e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_print_chain(chain)); 15308e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15318e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_add_tail(&chain->list, &dev->chains); 1532c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1533c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15348e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (list_empty(&dev->chains)) { 1535c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "No valid video chain found.\n"); 1536c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -1; 1537c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1538c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1539c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1540c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1541c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 15428e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* ------------------------------------------------------------------------ 15438e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Video device registration and unregistration 15448e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 15458e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 15468e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* 1547716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * Delete the UVC device. 1548716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * 1549716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * Called by the kernel when the last reference to the uvc_device structure 1550716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * is released. 1551716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * 1552716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * As this function is called after or during disconnect(), all URBs have 1553716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * already been canceled by the USB core. There is no need to kill the 1554716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * interrupt URB manually. 1555716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1556716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchartstatic void uvc_delete(struct uvc_device *dev) 1557716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart{ 1558716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct list_head *p, *n; 1559716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1560716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_put_intf(dev->intf); 1561716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_put_dev(dev->udev); 1562716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1563716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_status_cleanup(dev); 1564716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_ctrl_cleanup_device(dev); 1565716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1566716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart list_for_each_safe(p, n, &dev->chains) { 1567716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_video_chain *chain; 1568716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart chain = list_entry(p, struct uvc_video_chain, list); 1569716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(chain); 1570716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart } 1571716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1572716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart list_for_each_safe(p, n, &dev->entities) { 1573716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_entity *entity; 1574716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart entity = list_entry(p, struct uvc_entity, list); 1575716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(entity); 1576716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart } 1577716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1578716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart list_for_each_safe(p, n, &dev->streams) { 1579716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_streaming *streaming; 1580716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart streaming = list_entry(p, struct uvc_streaming, list); 1581716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_driver_release_interface(&uvc_driver.driver, 1582716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart streaming->intf); 1583716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart usb_put_intf(streaming->intf); 1584716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(streaming->format); 1585716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(streaming->header.bmaControls); 1586716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(streaming); 1587716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart } 1588716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1589716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart kfree(dev); 1590716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart} 1591716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1592716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchartstatic void uvc_release(struct video_device *vdev) 1593716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart{ 1594716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_streaming *stream = video_get_drvdata(vdev); 1595716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart struct uvc_device *dev = stream->dev; 1596716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1597716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart video_device_release(vdev); 1598716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1599716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart /* Decrement the registered streams count and delete the device when it 1600716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * reaches zero. 1601716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1602716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart if (atomic_dec_and_test(&dev->nstreams)) 1603716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_delete(dev); 1604716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart} 1605716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1606716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart/* 16078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Unregister the video devices. 16088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16098e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic void uvc_unregister_video(struct uvc_device *dev) 16108e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 16118e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream; 16128e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1613716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart /* Unregistering all video devices might result in uvc_delete() being 1614716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * called from inside the loop if there's no open file handle. To avoid 1615716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * that, increment the stream count before iterating over the streams 1616716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * and decrement it when done. 1617716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1618716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart atomic_inc(&dev->nstreams); 1619716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 16208e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 16218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (stream->vdev == NULL) 16228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 16238e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1624716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart video_unregister_device(stream->vdev); 16258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->vdev = NULL; 16268e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 1627716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart 1628716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart /* Decrement the stream count and call uvc_delete explicitly if there 1629716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart * are no stream left. 1630716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart */ 1631716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart if (atomic_dec_and_test(&dev->nstreams)) 1632716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_delete(dev); 16338e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 16348e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16358e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_register_video(struct uvc_device *dev, 16368e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream) 16378e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 16388e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct video_device *vdev; 16398e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart int ret; 16408e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16418e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Initialize the streaming interface with default streaming 16428e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * parameters. 16438e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16448e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret = uvc_video_init(stream); 16458e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) { 16468e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_ERR, "Failed to initialize the device " 16478e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "(%d).\n", ret); 16488e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 16498e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 16508e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16518e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Register the device with V4L. */ 16528e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart vdev = video_device_alloc(); 16538e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (vdev == NULL) { 16548e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_ERR, "Failed to allocate video device (%d).\n", 16558e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret); 16568e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return -ENOMEM; 16578e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 16588e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16598e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* We already hold a reference to dev->udev. The video device will be 16608e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * unregistered before the reference is released, so we don't need to 16618e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * get another one. 16628e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16638e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart vdev->parent = &dev->intf->dev; 16648e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart vdev->fops = &uvc_fops; 1665716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart vdev->release = uvc_release; 16668e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart strlcpy(vdev->name, dev->name, sizeof vdev->name); 16678e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16688e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Set the driver data before calling video_register_device, otherwise 16698e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * uvc_v4l2_open might race us. 16708e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16718e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->vdev = vdev; 16728e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart video_set_drvdata(vdev, stream); 16738e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16748e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); 16758e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) { 16768e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", 16778e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret); 16788e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->vdev = NULL; 16798e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart video_device_release(vdev); 16808e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 16818e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 16828e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1683716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart atomic_inc(&dev->nstreams); 16848e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 16858e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 16868e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16878e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* 16888e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * Register all video devices in all chains. 16898e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 16908e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_register_terms(struct uvc_device *dev, 16916241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart struct uvc_video_chain *chain) 16928e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 16938e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_streaming *stream; 16948e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_entity *term; 16958e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart int ret; 16968e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 16976241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart list_for_each_entry(term, &chain->entities, chain) { 16988e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 16998e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 17008e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17018e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream = uvc_stream_by_id(dev, term->id); 17028e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (stream == NULL) { 17038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart uvc_printk(KERN_INFO, "No streaming interface found " 17048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart "for terminal %u.", term->id); 17058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart continue; 17068e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 17078e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17088e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart stream->chain = chain; 17098e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart ret = uvc_register_video(dev, stream); 17108e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) 17118e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 17128e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 17138e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17148e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 17158e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 17168e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17178e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchartstatic int uvc_register_chains(struct uvc_device *dev) 17188e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart{ 17198e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart struct uvc_video_chain *chain; 17208e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart int ret; 17218e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17228e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart list_for_each_entry(chain, &dev->chains, list) { 17236241d8ca1dc27356180011dff4d93a3c5b3cbd76Laurent Pinchart ret = uvc_register_terms(dev, chain); 17248e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (ret < 0) 17258e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return ret; 17268e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart } 17278e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17288e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart return 0; 17298e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart} 17308e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 17318e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart/* ------------------------------------------------------------------------ 17328e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart * USB probe, disconnect, suspend and resume 17338e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart */ 17348e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 1735c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_probe(struct usb_interface *intf, 1736c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart const struct usb_device_id *id) 1737c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1738c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct usb_device *udev = interface_to_usbdev(intf); 1739c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev; 1740c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int ret; 1741c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1742c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (id->idVendor && id->idProduct) 1743c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " 1744c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "(%04x:%04x)\n", udev->devpath, id->idVendor, 1745c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart id->idProduct); 1746c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1747c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", 1748c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->devpath); 1749c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17502c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Allocate memory for the device and initialize it. */ 1751c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) 1752c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENOMEM; 1753c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1754c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&dev->entities); 17558e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart INIT_LIST_HEAD(&dev->chains); 175635f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart INIT_LIST_HEAD(&dev->streams); 1757716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart atomic_set(&dev->nstreams, 0); 175804a37e0f32f9882430bc1899899d2ed91b8aaf5bLaurent Pinchart atomic_set(&dev->users, 0); 1759c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1760c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->udev = usb_get_dev(udev); 1761c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->intf = usb_get_intf(intf); 1762c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 176373de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart dev->quirks = (uvc_quirks_param == -1) 176473de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart ? id->driver_info : uvc_quirks_param; 1765c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1766c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (udev->product != NULL) 1767d0ebf3073f8812464c9f6014d6cee09ab37c3fb5Laurent Pinchart strlcpy(dev->name, udev->product, sizeof dev->name); 1768c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart else 1769c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart snprintf(dev->name, sizeof dev->name, 1770c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "UVC Camera (%04x:%04x)", 1771c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idVendor), 1772c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idProduct)); 1773c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17742c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Parse the Video Class control descriptor. */ 1775c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_parse_control(dev) < 0) { 1776c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " 1777c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "descriptors.\n"); 1778c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1779c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1780c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1781fba4578ee925110587ef9b8b6ddfabf2ce288071Laurent Pinchart uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", 1782c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->uvc_version >> 8, dev->uvc_version & 0xff, 1783c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart udev->product ? udev->product : "<unnamed>", 1784c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idVendor), 1785c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart le16_to_cpu(udev->descriptor.idProduct)); 1786c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 178773de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart if (dev->quirks != id->driver_info) { 178873de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " 178973de3592c0da2313b25bac7789e9ea02c4b9f082Laurent Pinchart "parameter for testing purpose.\n", dev->quirks); 1790c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Please report required quirks to the " 1791c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "linux-uvc-devel mailing list.\n"); 1792c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1793c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17942c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Initialize controls. */ 1795c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (uvc_ctrl_init_device(dev) < 0) 1796c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1797c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 17988e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Scan the device for video chains. */ 179935f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart if (uvc_scan_device(dev) < 0) 1800c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart goto error; 1801c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 18028e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart /* Register video devices. */ 18038e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart if (uvc_register_chains(dev) < 0) 18048e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart goto error; 18058e113595edf0741b45ba10ba88cb5d077787c155Laurent Pinchart 18062c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Save our data pointer in the interface data. */ 1807c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_set_intfdata(intf, dev); 1808c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 18092c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart /* Initialize the interrupt URB. */ 1810c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if ((ret = uvc_status_init(dev)) < 0) { 1811c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_printk(KERN_INFO, "Unable to initialize the status " 1812c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "endpoint (%d), status interrupt will not be " 1813c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart "supported.\n", ret); 1814c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1815c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1816c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); 1817c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return 0; 1818c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1819c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pincharterror: 1820716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_unregister_video(dev); 1821c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return -ENODEV; 1822c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1823c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1824c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic void uvc_disconnect(struct usb_interface *intf) 1825c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1826c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 1827c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1828c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Set the USB interface data to NULL. This can be done outside the 1829c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * lock, as there's no other reader. 1830c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1831c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_set_intfdata(intf, NULL); 1832c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1833b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == 1834b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_SC_VIDEOSTREAMING) 1835c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return; 1836c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1837c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart dev->state |= UVC_DEV_DISCONNECTED; 1838a9e285856112e5e721b6a341d15437a164128b30Laurent Pinchart 1839716fdee110ceb816cca8c46c0890d08c5a1addb9Laurent Pinchart uvc_unregister_video(dev); 1840c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1841c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1842c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int uvc_suspend(struct usb_interface *intf, pm_message_t message) 1843c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1844c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 184535f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart struct uvc_streaming *stream; 1846c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1847c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", 1848c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->cur_altsetting->desc.bInterfaceNumber); 1849c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1850c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Controls are cached on the fly so they don't need to be saved. */ 1851b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == 1852b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_SC_VIDEOCONTROL) 1853c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_status_suspend(dev); 1854c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 185535f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 185635f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart if (stream->intf == intf) 185735f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return uvc_video_suspend(stream); 1858c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1859c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 186035f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " 186135f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart "mismatch.\n"); 186235f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return -EINVAL; 1863c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1864c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 18659b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int __uvc_resume(struct usb_interface *intf, int reset) 1866c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 1867c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart struct uvc_device *dev = usb_get_intfdata(intf); 186835f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart struct uvc_streaming *stream; 1869c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1870c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", 1871c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart intf->cur_altsetting->desc.bInterfaceNumber); 1872c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1873b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart if (intf->cur_altsetting->desc.bInterfaceSubClass == 1874b482d9231a73478763e6b42fd88ea453731a67ebLaurent Pinchart UVC_SC_VIDEOCONTROL) { 18757564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil if (reset) { 18767564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil int ret = uvc_ctrl_resume_device(dev); 18777564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil 18787564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil if (ret < 0) 18797564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil return ret; 18807564f67d5b38eb814e67edd8ba0c70fd8eb475b6Hans Verkuil } 1881c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1882c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return uvc_status_resume(dev); 1883c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1884c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 188535f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart list_for_each_entry(stream, &dev->streams, list) { 188635f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart if (stream->intf == intf) 188735f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return uvc_video_resume(stream); 1888c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart } 1889c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 189035f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " 189135f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart "mismatch.\n"); 189235f02a681b72ece756cf005e17f305a72329c140Laurent Pinchart return -EINVAL; 1893c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 1894c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 18959b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int uvc_resume(struct usb_interface *intf) 18969b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart{ 18979b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart return __uvc_resume(intf, 0); 18989b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart} 18999b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart 19009b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchartstatic int uvc_reset_resume(struct usb_interface *intf) 19019b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart{ 19029b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart return __uvc_resume(intf, 1); 19039b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart} 19049b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart 1905c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* ------------------------------------------------------------------------ 1906310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart * Module parameters 1907310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart */ 1908310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1909310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartstatic int uvc_clock_param_get(char *buffer, struct kernel_param *kp) 1910310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart{ 1911310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart if (uvc_clock_param == CLOCK_MONOTONIC) 1912310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return sprintf(buffer, "CLOCK_MONOTONIC"); 1913310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart else 1914310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return sprintf(buffer, "CLOCK_REALTIME"); 1915310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart} 1916310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1917310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartstatic int uvc_clock_param_set(const char *val, struct kernel_param *kp) 1918310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart{ 1919310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 1920310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart val += strlen("clock_"); 1921310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1922310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart if (strcasecmp(val, "monotonic") == 0) 1923310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart uvc_clock_param = CLOCK_MONOTONIC; 1924310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart else if (strcasecmp(val, "realtime") == 0) 1925310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart uvc_clock_param = CLOCK_REALTIME; 1926310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart else 1927310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return -EINVAL; 1928310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1929310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart return 0; 1930310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart} 1931310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1932310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 1933310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart &uvc_clock_param, S_IRUGO|S_IWUSR); 1934310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 1935310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); 1936310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 1937310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); 1938310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(quirks, "Forced device quirks"); 1939310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); 1940310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(trace, "Trace level bitmask"); 1941310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchartmodule_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); 1942310fe52461e6244b01a04b011c2e886d6b69de16Laurent PinchartMODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 1943310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart 1944310fe52461e6244b01a04b011c2e886d6b69de16Laurent Pinchart/* ------------------------------------------------------------------------ 1945c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * Driver initialization and cleanup 1946c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1947c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 1948c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart/* 1949c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * The Logitech cameras listed below have their interface class set to 1950c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * VENDOR_SPEC because they don't announce themselves as UVC devices, even 1951c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart * though they are compliant. 1952c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart */ 1953c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic struct usb_device_id uvc_ids[] = { 1954bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart /* Genius eFace 2025 */ 1955bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1956bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1957bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .idVendor = 0x0458, 1958bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .idProduct = 0x706e, 1959bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1960bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .bInterfaceSubClass = 1, 1961bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .bInterfaceProtocol = 0, 1962bce039c099e97b07534518b5f3c0ce31b1606ff6Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1963c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Microsoft Lifecam NX-6000 */ 1964c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1965c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1966c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x045e, 1967c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x00f8, 1968c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1969c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1970c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1971c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1972c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Microsoft Lifecam VX-7000 */ 1973c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1974c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1975c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x045e, 1976c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x0723, 1977c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 1978c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1979c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 1980c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 1981c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Fusion */ 1982c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1983c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1984c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1985c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c1, 1986c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1987c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1988c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1989c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Orbit MP */ 1990c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1991c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 1992c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 1993c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c2, 1994c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 1995c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 1996c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 1997c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Pro for Notebook */ 1998c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 1999c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2000c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 2001c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c3, 2002c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2003c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2004c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2005c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam Pro 5000 */ 2006c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2007c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2008c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 2009c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c5, 2010c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2011c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2012c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2013c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam OEM Dell Notebook */ 2014c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2015c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2016c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 2017c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c6, 2018c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2019c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2020c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2021c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Logitech Quickcam OEM Cisco VT Camera II */ 2022c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2023c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2024c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x046d, 2025c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x08c7, 2026c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2027c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2028c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0 }, 2029f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2030f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2031f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2032f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .idVendor = 0x058f, 2033f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .idProduct = 0x3820, 2034f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2035f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceSubClass = 1, 2036f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .bInterfaceProtocol = 0, 2037f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2038c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Apple Built-In iSight */ 20392c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2040c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2041c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x05ac, 2042c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x8501, 20432c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 20442c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceSubClass = 1, 20452c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceProtocol = 0, 2046c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 2047c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | UVC_QUIRK_BUILTIN_ISIGHT }, 2048c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Genesys Logic USB 2.0 PC Camera */ 20492c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2050c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 20512c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .idVendor = 0x05e3, 20522c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .idProduct = 0x0505, 20532c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 20542c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceSubClass = 1, 20552c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .bInterfaceProtocol = 0, 20562c2d264bb951c1a846b86431d3e784edfb79ab39Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2057d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart /* ViMicro Vega */ 2058d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2059d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2060d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idVendor = 0x0ac8, 2061d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idProduct = 0x332d, 2062d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2063d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceSubClass = 1, 2064d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceProtocol = 0, 2065d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2066d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart /* ViMicro - Minoru3D */ 2067d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2068d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2069d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idVendor = 0x0ac8, 2070d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idProduct = 0x3410, 2071d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2072d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceSubClass = 1, 2073d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .bInterfaceProtocol = 0, 2074d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2075d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart /* ViMicro Venus - Minoru3D */ 2076d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 207750144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 207850144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .idVendor = 0x0ac8, 2079d79cd8393ae85ebaf53a8fc93491eea96522d68eLaurent Pinchart .idProduct = 0x3420, 208050144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 208150144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceSubClass = 1, 208250144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .bInterfaceProtocol = 0, 208350144aeeb702ea105697ae5249f059ea3990b838Laurent Pinchart .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2084c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* MT6227 */ 2085c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2086c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2087c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x0e8d, 2088c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x0004, 2089c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2090c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2091c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2092bab6f66c08043a93b9460f6e0bf2b1cd9cc03e53Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 2093bab6f66c08043a93b9460f6e0bf2b1cd9cc03e53Laurent Pinchart | UVC_QUIRK_PROBE_DEF }, 20949275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart /* IMC Networks (Medion Akoya) */ 20959275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 20969275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 20979275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart .idVendor = 0x13d3, 20989275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart .idProduct = 0x5103, 20999275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21009275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart .bInterfaceSubClass = 1, 21019275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart .bInterfaceProtocol = 0, 21029275b32bced808bd57bdf3884748ed1126ba90e0Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2103c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Syntek (HP Spartan) */ 2104c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2105c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2106c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x174f, 2107c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x5212, 2108c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2109c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2110c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 211125e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2112562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart /* Syntek (Samsung Q310) */ 2113562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2114562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2115562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .idVendor = 0x174f, 2116562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .idProduct = 0x5931, 2117562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2118562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceSubClass = 1, 2119562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .bInterfaceProtocol = 0, 2120562f0fed97722fc58230d21e401f1259caa94b4cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2121f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart /* Syntek (Packard Bell EasyNote MX52 */ 2122f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2123f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2124f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .idVendor = 0x174f, 2125f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .idProduct = 0x8a12, 2126f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2127f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .bInterfaceSubClass = 1, 2128f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .bInterfaceProtocol = 0, 2129f129b03ba272c86c42ad476684caa0d6109cb383Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2130f61d1d8a563b1f3c5f1f55d856278aae3fd3987eLaurent Pinchart /* Syntek (Asus F9SG) */ 213125e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 213225e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 213325e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .idVendor = 0x174f, 213425e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .idProduct = 0x8a31, 213525e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 213625e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceSubClass = 1, 213725e69850d1bb315f251c91183b89da44d4f9be23Laurent Pinchart .bInterfaceProtocol = 0, 2138c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2139c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Syntek (Asus U3S) */ 2140c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2141c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2142c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x174f, 2143c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x8a33, 2144c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2145c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2146c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2147c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 21480ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart /* Syntek (JAOtech Smart Terminal) */ 21490ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21500ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21510ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .idVendor = 0x174f, 21520ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .idProduct = 0x8a34, 21530ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21540ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceSubClass = 1, 21550ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .bInterfaceProtocol = 0, 21560ce566da77767bc7dd6e4016a6544c9e814d2ed3Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 215770092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart /* Miricle 307K */ 215870092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 215970092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 216070092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart .idVendor = 0x17dc, 216170092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart .idProduct = 0x0202, 216270092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 216370092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart .bInterfaceSubClass = 1, 216470092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart .bInterfaceProtocol = 0, 216570092c26dcfcdcc463e157c103ec4c9d2d49de67Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2166849a3aba2d9830dc2a78a66078023e7e5ac26e15Filipe Rosset /* Lenovo Thinkpad SL400/SL500 */ 21672f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21682f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21692f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .idVendor = 0x17ef, 21702f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .idProduct = 0x480b, 21712f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21722f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceSubClass = 1, 21732f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .bInterfaceProtocol = 0, 21742f38483bc45e11dc138cedce72135f57819f57c4Laurent Pinchart .driver_info = UVC_QUIRK_STREAM_NO_FID }, 21752d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart /* Aveo Technology USB 2.0 Camera */ 21762d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21772d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21782d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .idVendor = 0x1871, 21792d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .idProduct = 0x0306, 21802d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 21812d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .bInterfaceSubClass = 1, 21822d2bf2a3a6c84f0b316764e521d5dcee557e9c65Laurent Pinchart .bInterfaceProtocol = 0, 21835bdf1377587bbde8ef0893cf726de116c2250208Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 21845bdf1377587bbde8ef0893cf726de116c2250208Laurent Pinchart | UVC_QUIRK_PROBE_EXTRAFIELDS }, 2185c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Ecamm Pico iMage */ 2186c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2187c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2188c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x18cd, 2189c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0xcafe, 2190c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2191c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2192c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2193c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, 21942bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart /* Manta MM-353 Plako */ 21952bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 21962bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 21972bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart .idVendor = 0x18ec, 21982bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart .idProduct = 0x3188, 21992bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 22002bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart .bInterfaceSubClass = 1, 22012bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart .bInterfaceProtocol = 0, 22022bb00fe6336687f08e0a3733bce2343a821af843Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2203ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart /* FSC WebCam V30S */ 2204ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2205ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2206ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .idVendor = 0x18ec, 2207ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .idProduct = 0x3288, 2208ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2209ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .bInterfaceSubClass = 1, 2210ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .bInterfaceProtocol = 0, 2211ca4a3456858775081f172e89077aa65cf5dbc52aLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 22121e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart /* Arkmicro unbranded */ 22131e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 22141e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 22151e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .idVendor = 0x18ec, 22161e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .idProduct = 0x3290, 22171e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 22181e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .bInterfaceSubClass = 1, 22191e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .bInterfaceProtocol = 0, 22201e4d05bc95a0fe2972c5c91ed45466587d07cd2cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_DEF }, 2221c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Bodelin ProScopeHR */ 2222c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2223c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_DEV_HI 2224c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2225c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x19ab, 2226c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x1000, 2227c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bcdDevice_hi = 0x0126, 2228c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2229c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2230c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2231c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_STATUS_INTERVAL }, 22323bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart /* MSI StarCam 370i */ 22333bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 22343bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 22353bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .idVendor = 0x1b3b, 22363bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .idProduct = 0x2951, 22373bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 22383bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .bInterfaceSubClass = 1, 22393bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .bInterfaceProtocol = 0, 22403bc766ad374d04349ba09bd93f51980ad29d11c3Laurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2241c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* SiGma Micro USB Web Camera */ 2242c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2243c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart | USB_DEVICE_ID_MATCH_INT_INFO, 2244c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idVendor = 0x1c4f, 2245c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .idProduct = 0x3000, 2246c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceClass = USB_CLASS_VIDEO, 2247c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceSubClass = 1, 2248c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .bInterfaceProtocol = 0, 2249c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver_info = UVC_QUIRK_PROBE_MINMAX 2250d732c44c1a4b54e3c59ad92069bc2fd848aca5f3Laurent Pinchart | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, 2251c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart /* Generic USB Video Class */ 2252c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, 2253c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart {} 2254c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 2255c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2256c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_DEVICE_TABLE(usb, uvc_ids); 2257c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2258c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstruct uvc_driver uvc_driver = { 2259c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .driver = { 2260c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .name = "uvcvideo", 2261c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .probe = uvc_probe, 2262c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .disconnect = uvc_disconnect, 2263c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .suspend = uvc_suspend, 2264c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .resume = uvc_resume, 22659b0ae867a6fd3035e97e6c33bc07a5bfd7c0f96cLaurent Pinchart .reset_resume = uvc_reset_resume, 2266c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .id_table = uvc_ids, 2267c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart .supports_autosuspend = 1, 2268c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart }, 2269c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart}; 2270c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2271c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic int __init uvc_init(void) 2272c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 2273c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart int result; 2274c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2275c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&uvc_driver.devices); 2276c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart INIT_LIST_HEAD(&uvc_driver.controls); 2277c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart mutex_init(&uvc_driver.ctrl_mutex); 2278c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2279c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart uvc_ctrl_init(); 2280c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2281c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart result = usb_register(&uvc_driver.driver); 2282c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart if (result == 0) 2283c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); 2284c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart return result; 2285c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 2286c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2287c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartstatic void __exit uvc_cleanup(void) 2288c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart{ 2289c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart usb_deregister(&uvc_driver.driver); 2290561474c2d2a1e212ea186e0b65cc69fb330e7bd5Laurent Pinchart uvc_ctrl_cleanup(); 2291c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart} 2292c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2293c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_init(uvc_init); 2294c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchartmodule_exit(uvc_cleanup); 2295c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent Pinchart 2296c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_AUTHOR(DRIVER_AUTHOR); 2297c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_DESCRIPTION(DRIVER_DESC); 2298c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_LICENSE("GPL"); 2299c0efd232929c2cd87238de2cccdaf4e845be5b0cLaurent PinchartMODULE_VERSION(DRIVER_VERSION); 2300f87086e302300fdff1bd32049deb7a7f3e3de7daHans Verkuil 2301