Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* Linux driver for Philips webcam |
| 2 | USB and Video4Linux interface part. |
| 3 | (C) 1999-2004 Nemosoft Unv. |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 4 | (C) 2004-2006 Luc Saillard (luc@saillard.org) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | |
| 6 | NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx |
| 7 | driver and thus may have bugs that are not present in the original version. |
| 8 | Please send bug reports and support requests to <luc@saillard.org>. |
| 9 | The decompression routines have been implemented by reverse-engineering the |
| 10 | Nemosoft binary pwcx module. Caveat emptor. |
| 11 | |
| 12 | This program is free software; you can redistribute it and/or modify |
| 13 | it under the terms of the GNU General Public License as published by |
| 14 | the Free Software Foundation; either version 2 of the License, or |
| 15 | (at your option) any later version. |
| 16 | |
| 17 | This program is distributed in the hope that it will be useful, |
| 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | GNU General Public License for more details. |
| 21 | |
| 22 | You should have received a copy of the GNU General Public License |
| 23 | along with this program; if not, write to the Free Software |
| 24 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 25 | |
| 26 | */ |
| 27 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 28 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | This code forms the interface between the USB layers and the Philips |
| 30 | specific stuff. Some adanved stuff of the driver falls under an |
| 31 | NDA, signed between me and Philips B.V., Eindhoven, the Netherlands, and |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 32 | is thus not distributed in source form. The binary pwcx.o module |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | contains the code that falls under the NDA. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 34 | |
| 35 | In case you're wondering: 'pwc' stands for "Philips WebCam", but |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | I really didn't want to type 'philips_web_cam' every time (I'm lazy as |
| 37 | any Linux kernel hacker, but I don't like uncomprehensible abbreviations |
| 38 | without explanation). |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | Oh yes, convention: to disctinguish between all the various pointers to |
| 41 | device-structures, I use these names for the pointer variables: |
| 42 | udev: struct usb_device * |
| 43 | vdev: struct video_device * |
| 44 | pdev: struct pwc_devive * |
| 45 | */ |
| 46 | |
| 47 | /* Contributors: |
| 48 | - Alvarado: adding whitebalance code |
| 49 | - Alistar Moire: QuickCam 3000 Pro device/product ID |
| 50 | - Tony Hoyle: Creative Labs Webcam 5 device/product ID |
| 51 | - Mark Burazin: solving hang in VIDIOCSYNC when camera gets unplugged |
| 52 | - Jk Fang: Sotec Afina Eye ID |
| 53 | - Xavier Roche: QuickCam Pro 4000 ID |
| 54 | - Jens Knudsen: QuickCam Zoom ID |
| 55 | - J. Debert: QuickCam for Notebooks ID |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 56 | - Pham Thanh Nam: webcam snapshot button as an event input device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | */ |
| 58 | |
| 59 | #include <linux/errno.h> |
| 60 | #include <linux/init.h> |
| 61 | #include <linux/mm.h> |
| 62 | #include <linux/module.h> |
| 63 | #include <linux/poll.h> |
| 64 | #include <linux/slab.h> |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 65 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
| 66 | #include <linux/usb/input.h> |
| 67 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | #include <linux/vmalloc.h> |
| 69 | #include <asm/io.h> |
| 70 | |
| 71 | #include "pwc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #include "pwc-kiara.h" |
| 73 | #include "pwc-timon.h" |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 74 | #include "pwc-dec23.h" |
| 75 | #include "pwc-dec1.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #include "pwc-uncompress.h" |
| 77 | |
| 78 | /* Function prototypes and driver templates */ |
| 79 | |
| 80 | /* hotplug device table support */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 81 | static const struct usb_device_id pwc_device_table [] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { USB_DEVICE(0x0471, 0x0302) }, /* Philips models */ |
| 83 | { USB_DEVICE(0x0471, 0x0303) }, |
| 84 | { USB_DEVICE(0x0471, 0x0304) }, |
| 85 | { USB_DEVICE(0x0471, 0x0307) }, |
| 86 | { USB_DEVICE(0x0471, 0x0308) }, |
| 87 | { USB_DEVICE(0x0471, 0x030C) }, |
| 88 | { USB_DEVICE(0x0471, 0x0310) }, |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 89 | { USB_DEVICE(0x0471, 0x0311) }, /* Philips ToUcam PRO II */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | { USB_DEVICE(0x0471, 0x0312) }, |
| 91 | { USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 92 | { USB_DEVICE(0x0471, 0x0329) }, /* Philips SPC 900NC PC Camera */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | { USB_DEVICE(0x069A, 0x0001) }, /* Askey */ |
| 94 | { USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam Pro 3000 */ |
| 95 | { USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */ |
| 96 | { USB_DEVICE(0x046D, 0x08B2) }, /* Logitech QuickCam Pro 4000 */ |
| 97 | { USB_DEVICE(0x046D, 0x08B3) }, /* Logitech QuickCam Zoom (old model) */ |
| 98 | { USB_DEVICE(0x046D, 0x08B4) }, /* Logitech QuickCam Zoom (new model) */ |
| 99 | { USB_DEVICE(0x046D, 0x08B5) }, /* Logitech QuickCam Orbit/Sphere */ |
Mauro Carvalho Chehab | 6b1ce3c | 2007-03-21 16:35:28 -0300 | [diff] [blame] | 100 | { USB_DEVICE(0x046D, 0x08B6) }, /* Cisco VT Camera */ |
| 101 | { USB_DEVICE(0x046D, 0x08B7) }, /* Logitech ViewPort AV 100 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | { USB_DEVICE(0x046D, 0x08B8) }, /* Logitech (reserved) */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 103 | { USB_DEVICE(0x055D, 0x9000) }, /* Samsung MPC-C10 */ |
| 104 | { USB_DEVICE(0x055D, 0x9001) }, /* Samsung MPC-C30 */ |
| 105 | { USB_DEVICE(0x055D, 0x9002) }, /* Samsung SNC-35E (Ver3.0) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | { USB_DEVICE(0x041E, 0x400C) }, /* Creative Webcam 5 */ |
| 107 | { USB_DEVICE(0x041E, 0x4011) }, /* Creative Webcam Pro Ex */ |
| 108 | { USB_DEVICE(0x04CC, 0x8116) }, /* Afina Eye */ |
| 109 | { USB_DEVICE(0x06BE, 0x8116) }, /* new Afina Eye */ |
| 110 | { USB_DEVICE(0x0d81, 0x1910) }, /* Visionite */ |
| 111 | { USB_DEVICE(0x0d81, 0x1900) }, |
| 112 | { } |
| 113 | }; |
| 114 | MODULE_DEVICE_TABLE(usb, pwc_device_table); |
| 115 | |
| 116 | static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id); |
| 117 | static void usb_pwc_disconnect(struct usb_interface *intf); |
| 118 | |
| 119 | static struct usb_driver pwc_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | .name = "Philips webcam", /* name */ |
| 121 | .id_table = pwc_device_table, |
| 122 | .probe = usb_pwc_probe, /* probe() */ |
| 123 | .disconnect = usb_pwc_disconnect, /* disconnect() */ |
| 124 | }; |
| 125 | |
| 126 | #define MAX_DEV_HINTS 20 |
| 127 | #define MAX_ISOC_ERRORS 20 |
| 128 | |
| 129 | static int default_size = PSZ_QCIF; |
| 130 | static int default_fps = 10; |
| 131 | static int default_fbufs = 3; /* Default number of frame buffers */ |
Michael Krufky | b930e1d | 2007-08-27 18:16:54 -0300 | [diff] [blame] | 132 | int pwc_mbufs = 2; /* Default number of mmap() buffers */ |
Trent Piepho | 05ad390 | 2007-01-30 23:26:01 -0300 | [diff] [blame] | 133 | #ifdef CONFIG_USB_PWC_DEBUG |
Michael Krufky | b930e1d | 2007-08-27 18:16:54 -0300 | [diff] [blame] | 134 | int pwc_trace = PWC_DEBUG_LEVEL; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 135 | #endif |
Douglas Schilling Landgraf | ff699e6 | 2008-04-22 14:41:48 -0300 | [diff] [blame] | 136 | static int power_save; |
| 137 | static int led_on = 100, led_off; /* defaults to LED that is on while in use */ |
Adrian Bunk | b20c3cf | 2006-06-23 06:49:34 -0300 | [diff] [blame] | 138 | static int pwc_preferred_compression = 1; /* 0..3 = uncompressed..high */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | static struct { |
| 140 | int type; |
| 141 | char serial_number[30]; |
| 142 | int device_node; |
| 143 | struct pwc_device *pdev; |
| 144 | } device_hint[MAX_DEV_HINTS]; |
| 145 | |
| 146 | /***/ |
| 147 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 148 | static int pwc_video_open(struct file *file); |
| 149 | static int pwc_video_close(struct file *file); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 150 | static ssize_t pwc_video_read(struct file *file, char __user *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | size_t count, loff_t *ppos); |
| 152 | static unsigned int pwc_video_poll(struct file *file, poll_table *wait); |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 153 | static long pwc_video_ioctl(struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | unsigned int ioctlnr, unsigned long arg); |
| 155 | static int pwc_video_mmap(struct file *file, struct vm_area_struct *vma); |
| 156 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 157 | static const struct v4l2_file_operations pwc_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | .owner = THIS_MODULE, |
| 159 | .open = pwc_video_open, |
| 160 | .release = pwc_video_close, |
| 161 | .read = pwc_video_read, |
| 162 | .poll = pwc_video_poll, |
| 163 | .mmap = pwc_video_mmap, |
| 164 | .ioctl = pwc_video_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | }; |
| 166 | static struct video_device pwc_template = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | .name = "Philips Webcam", /* Filled in later */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | .release = video_device_release, |
| 169 | .fops = &pwc_fops, |
| 170 | .minor = -1, |
| 171 | }; |
| 172 | |
| 173 | /***************************************************************************/ |
| 174 | |
| 175 | /* Okay, this is some magic that I worked out and the reasoning behind it... |
| 176 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 177 | The biggest problem with any USB device is of course: "what to do |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | when the user unplugs the device while it is in use by an application?" |
| 179 | We have several options: |
| 180 | 1) Curse them with the 7 plagues when they do (requires divine intervention) |
| 181 | 2) Tell them not to (won't work: they'll do it anyway) |
| 182 | 3) Oops the kernel (this will have a negative effect on a user's uptime) |
| 183 | 4) Do something sensible. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | Of course, we go for option 4. |
| 186 | |
| 187 | It happens that this device will be linked to two times, once from |
| 188 | usb_device and once from the video_device in their respective 'private' |
| 189 | pointers. This is done when the device is probed() and all initialization |
| 190 | succeeded. The pwc_device struct links back to both structures. |
| 191 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 192 | When a device is unplugged while in use it will be removed from the |
| 193 | list of known USB devices; I also de-register it as a V4L device, but |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | unfortunately I can't free the memory since the struct is still in use |
| 195 | by the file descriptor. This free-ing is then deferend until the first |
| 196 | opportunity. Crude, but it works. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | A small 'advantage' is that if a user unplugs the cam and plugs it back |
| 199 | in, it should get assigned the same video device minor, but unfortunately |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 200 | it's non-trivial to re-link the cam back to the video device... (that |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | would surely be magic! :)) |
| 202 | */ |
| 203 | |
| 204 | /***************************************************************************/ |
| 205 | /* Private functions */ |
| 206 | |
| 207 | /* Here we want the physical address of the memory. |
| 208 | * This is used when initializing the contents of the area. |
| 209 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 212 | |
| 213 | static void *pwc_rvmalloc(unsigned long size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | { |
| 215 | void * mem; |
| 216 | unsigned long adr; |
| 217 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 218 | mem=vmalloc_32(size); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 219 | if (!mem) |
| 220 | return NULL; |
| 221 | |
| 222 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ |
| 223 | adr=(unsigned long) mem; |
| 224 | while (size > 0) |
| 225 | { |
| 226 | SetPageReserved(vmalloc_to_page((void *)adr)); |
| 227 | adr += PAGE_SIZE; |
| 228 | size -= PAGE_SIZE; |
| 229 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | return mem; |
| 231 | } |
| 232 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 233 | static void pwc_rvfree(void * mem, unsigned long size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 235 | unsigned long adr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 237 | if (!mem) |
| 238 | return; |
| 239 | |
| 240 | adr=(unsigned long) mem; |
| 241 | while ((long) size > 0) |
| 242 | { |
| 243 | ClearPageReserved(vmalloc_to_page((void *)adr)); |
| 244 | adr += PAGE_SIZE; |
| 245 | size -= PAGE_SIZE; |
| 246 | } |
| 247 | vfree(mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | |
| 251 | |
| 252 | |
| 253 | static int pwc_allocate_buffers(struct pwc_device *pdev) |
| 254 | { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 255 | int i, err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | void *kbuf; |
| 257 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 258 | PWC_DEBUG_MEMORY(">> pwc_allocate_buffers(pdev = 0x%p)\n", pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | if (pdev == NULL) |
| 261 | return -ENXIO; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 262 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 263 | /* Allocate Isochronuous pipe buffers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
| 265 | if (pdev->sbuf[i].data == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 266 | kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | if (kbuf == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 268 | PWC_ERROR("Failed to allocate iso buffer %d.\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | return -ENOMEM; |
| 270 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 271 | PWC_DEBUG_MEMORY("Allocated iso buffer at %p.\n", kbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | pdev->sbuf[i].data = kbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | } |
| 274 | } |
| 275 | |
| 276 | /* Allocate frame buffer structure */ |
| 277 | if (pdev->fbuf == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 278 | kbuf = kzalloc(default_fbufs * sizeof(struct pwc_frame_buf), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | if (kbuf == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 280 | PWC_ERROR("Failed to allocate frame buffer structure.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | return -ENOMEM; |
| 282 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 283 | PWC_DEBUG_MEMORY("Allocated frame buffer structure at %p.\n", kbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | pdev->fbuf = kbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | /* create frame buffers, and make circular ring */ |
| 288 | for (i = 0; i < default_fbufs; i++) { |
| 289 | if (pdev->fbuf[i].data == NULL) { |
| 290 | kbuf = vmalloc(PWC_FRAME_SIZE); /* need vmalloc since frame buffer > 128K */ |
| 291 | if (kbuf == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 292 | PWC_ERROR("Failed to allocate frame buffer %d.\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | return -ENOMEM; |
| 294 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 295 | PWC_DEBUG_MEMORY("Allocated frame buffer %d at %p.\n", i, kbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | pdev->fbuf[i].data = kbuf; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 297 | memset(kbuf, 0, PWC_FRAME_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | } |
| 299 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | /* Allocate decompressor table space */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 302 | if (DEVICE_USE_CODEC1(pdev->type)) |
| 303 | err = pwc_dec1_alloc(pdev); |
| 304 | else |
| 305 | err = pwc_dec23_alloc(pdev); |
| 306 | |
| 307 | if (err) { |
| 308 | PWC_ERROR("Failed to allocate decompress table.\n"); |
| 309 | return err; |
| 310 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | /* Allocate image buffer; double buffer for mmap() */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 313 | kbuf = pwc_rvmalloc(pwc_mbufs * pdev->len_per_image); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | if (kbuf == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 315 | PWC_ERROR("Failed to allocate image buffer(s). needed (%d)\n", |
| 316 | pwc_mbufs * pdev->len_per_image); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | return -ENOMEM; |
| 318 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 319 | PWC_DEBUG_MEMORY("Allocated image buffer at %p.\n", kbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | pdev->image_data = kbuf; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 321 | for (i = 0; i < pwc_mbufs; i++) { |
| 322 | pdev->images[i].offset = i * pdev->len_per_image; |
| 323 | pdev->images[i].vma_use_count = 0; |
| 324 | } |
| 325 | for (; i < MAX_IMAGES; i++) { |
| 326 | pdev->images[i].offset = 0; |
| 327 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
| 329 | kbuf = NULL; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 330 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 331 | PWC_DEBUG_MEMORY("<< pwc_allocate_buffers()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | static void pwc_free_buffers(struct pwc_device *pdev) |
| 336 | { |
| 337 | int i; |
| 338 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 339 | PWC_DEBUG_MEMORY("Entering free_buffers(%p).\n", pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
| 341 | if (pdev == NULL) |
| 342 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | /* Release Iso-pipe buffers */ |
| 344 | for (i = 0; i < MAX_ISO_BUFS; i++) |
| 345 | if (pdev->sbuf[i].data != NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 346 | PWC_DEBUG_MEMORY("Freeing ISO buffer at %p.\n", pdev->sbuf[i].data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | kfree(pdev->sbuf[i].data); |
| 348 | pdev->sbuf[i].data = NULL; |
| 349 | } |
| 350 | |
| 351 | /* The same for frame buffers */ |
| 352 | if (pdev->fbuf != NULL) { |
| 353 | for (i = 0; i < default_fbufs; i++) { |
| 354 | if (pdev->fbuf[i].data != NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 355 | PWC_DEBUG_MEMORY("Freeing frame buffer %d at %p.\n", i, pdev->fbuf[i].data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | vfree(pdev->fbuf[i].data); |
| 357 | pdev->fbuf[i].data = NULL; |
| 358 | } |
| 359 | } |
| 360 | kfree(pdev->fbuf); |
| 361 | pdev->fbuf = NULL; |
| 362 | } |
| 363 | |
| 364 | /* Intermediate decompression buffer & tables */ |
| 365 | if (pdev->decompress_data != NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 366 | PWC_DEBUG_MEMORY("Freeing decompression buffer at %p.\n", pdev->decompress_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | kfree(pdev->decompress_data); |
| 368 | pdev->decompress_data = NULL; |
| 369 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
| 371 | /* Release image buffers */ |
| 372 | if (pdev->image_data != NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 373 | PWC_DEBUG_MEMORY("Freeing image buffer at %p.\n", pdev->image_data); |
| 374 | pwc_rvfree(pdev->image_data, pwc_mbufs * pdev->len_per_image); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | } |
| 376 | pdev->image_data = NULL; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 377 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 378 | PWC_DEBUG_MEMORY("Leaving free_buffers().\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } |
| 380 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 381 | /* The frame & image buffer mess. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | |
| 383 | Yes, this is a mess. Well, it used to be simple, but alas... In this |
| 384 | module, 3 buffers schemes are used to get the data from the USB bus to |
| 385 | the user program. The first scheme involves the ISO buffers (called thus |
| 386 | since they transport ISO data from the USB controller), and not really |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 387 | interesting. Suffices to say the data from this buffer is quickly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | gathered in an interrupt handler (pwc_isoc_handler) and placed into the |
| 389 | frame buffer. |
| 390 | |
| 391 | The frame buffer is the second scheme, and is the central element here. |
| 392 | It collects the data from a single frame from the camera (hence, the |
| 393 | name). Frames are delimited by the USB camera with a short USB packet, |
| 394 | so that's easy to detect. The frame buffers form a list that is filled |
| 395 | by the camera+USB controller and drained by the user process through |
| 396 | either read() or mmap(). |
| 397 | |
| 398 | The image buffer is the third scheme, in which frames are decompressed |
| 399 | and converted into planar format. For mmap() there is more than |
| 400 | one image buffer available. |
| 401 | |
| 402 | The frame buffers provide the image buffering. In case the user process |
| 403 | is a bit slow, this introduces lag and some undesired side-effects. |
| 404 | The problem arises when the frame buffer is full. I used to drop the last |
| 405 | frame, which makes the data in the queue stale very quickly. But dropping |
| 406 | the frame at the head of the queue proved to be a litte bit more difficult. |
| 407 | I tried a circular linked scheme, but this introduced more problems than |
| 408 | it solved. |
| 409 | |
| 410 | Because filling and draining are completely asynchronous processes, this |
| 411 | requires some fiddling with pointers and mutexes. |
| 412 | |
| 413 | Eventually, I came up with a system with 2 lists: an 'empty' frame list |
| 414 | and a 'full' frame list: |
| 415 | * Initially, all frame buffers but one are on the 'empty' list; the one |
| 416 | remaining buffer is our initial fill frame. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 417 | * If a frame is needed for filling, we try to take it from the 'empty' |
| 418 | list, unless that list is empty, in which case we take the buffer at |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | the head of the 'full' list. |
| 420 | * When our fill buffer has been filled, it is appended to the 'full' |
| 421 | list. |
| 422 | * If a frame is needed by read() or mmap(), it is taken from the head of |
| 423 | the 'full' list, handled, and then appended to the 'empty' list. If no |
| 424 | buffer is present on the 'full' list, we wait. |
| 425 | The advantage is that the buffer that is currently being decompressed/ |
| 426 | converted, is on neither list, and thus not in our way (any other scheme |
| 427 | I tried had the problem of old data lingering in the queue). |
| 428 | |
| 429 | Whatever strategy you choose, it always remains a tradeoff: with more |
| 430 | frame buffers the chances of a missed frame are reduced. On the other |
| 431 | hand, on slower machines it introduces lag because the queue will |
| 432 | always be full. |
| 433 | */ |
| 434 | |
| 435 | /** |
| 436 | \brief Find next frame buffer to fill. Take from empty or full list, whichever comes first. |
| 437 | */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 438 | static int pwc_next_fill_frame(struct pwc_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | { |
| 440 | int ret; |
| 441 | unsigned long flags; |
| 442 | |
| 443 | ret = 0; |
| 444 | spin_lock_irqsave(&pdev->ptrlock, flags); |
| 445 | if (pdev->fill_frame != NULL) { |
| 446 | /* append to 'full' list */ |
| 447 | if (pdev->full_frames == NULL) { |
| 448 | pdev->full_frames = pdev->fill_frame; |
| 449 | pdev->full_frames_tail = pdev->full_frames; |
| 450 | } |
| 451 | else { |
| 452 | pdev->full_frames_tail->next = pdev->fill_frame; |
| 453 | pdev->full_frames_tail = pdev->fill_frame; |
| 454 | } |
| 455 | } |
| 456 | if (pdev->empty_frames != NULL) { |
| 457 | /* We have empty frames available. That's easy */ |
| 458 | pdev->fill_frame = pdev->empty_frames; |
| 459 | pdev->empty_frames = pdev->empty_frames->next; |
| 460 | } |
| 461 | else { |
| 462 | /* Hmm. Take it from the full list */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | /* sanity check */ |
| 464 | if (pdev->full_frames == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 465 | PWC_ERROR("Neither empty or full frames available!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
| 467 | return -EINVAL; |
| 468 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | pdev->fill_frame = pdev->full_frames; |
| 470 | pdev->full_frames = pdev->full_frames->next; |
| 471 | ret = 1; |
| 472 | } |
| 473 | pdev->fill_frame->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | |
| 479 | /** |
| 480 | \brief Reset all buffers, pointers and lists, except for the image_used[] buffer. |
| 481 | |
| 482 | If the image_used[] buffer is cleared too, mmap()/VIDIOCSYNC will run into trouble. |
| 483 | */ |
| 484 | static void pwc_reset_buffers(struct pwc_device *pdev) |
| 485 | { |
| 486 | int i; |
| 487 | unsigned long flags; |
| 488 | |
Harvey Harrison | 645635b | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 489 | PWC_DEBUG_MEMORY(">> %s __enter__\n", __func__); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 490 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | spin_lock_irqsave(&pdev->ptrlock, flags); |
| 492 | pdev->full_frames = NULL; |
| 493 | pdev->full_frames_tail = NULL; |
| 494 | for (i = 0; i < default_fbufs; i++) { |
| 495 | pdev->fbuf[i].filled = 0; |
| 496 | if (i > 0) |
| 497 | pdev->fbuf[i].next = &pdev->fbuf[i - 1]; |
| 498 | else |
| 499 | pdev->fbuf->next = NULL; |
| 500 | } |
| 501 | pdev->empty_frames = &pdev->fbuf[default_fbufs - 1]; |
| 502 | pdev->empty_frames_tail = pdev->fbuf; |
| 503 | pdev->read_frame = NULL; |
| 504 | pdev->fill_frame = pdev->empty_frames; |
| 505 | pdev->empty_frames = pdev->empty_frames->next; |
| 506 | |
| 507 | pdev->image_read_pos = 0; |
| 508 | pdev->fill_image = 0; |
| 509 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 510 | |
Harvey Harrison | 645635b | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 511 | PWC_DEBUG_MEMORY("<< %s __leaving__\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | } |
| 513 | |
| 514 | |
| 515 | /** |
| 516 | \brief Do all the handling for getting one frame: get pointer, decompress, advance pointers. |
| 517 | */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 518 | int pwc_handle_frame(struct pwc_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
| 520 | int ret = 0; |
| 521 | unsigned long flags; |
| 522 | |
| 523 | spin_lock_irqsave(&pdev->ptrlock, flags); |
| 524 | /* First grab our read_frame; this is removed from all lists, so |
| 525 | we can release the lock after this without problems */ |
| 526 | if (pdev->read_frame != NULL) { |
| 527 | /* This can't theoretically happen */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 528 | PWC_ERROR("Huh? Read frame still in use?\n"); |
| 529 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
| 530 | return ret; |
| 531 | } |
| 532 | |
| 533 | |
| 534 | if (pdev->full_frames == NULL) { |
| 535 | PWC_ERROR("Woops. No frames ready.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | else { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 538 | pdev->read_frame = pdev->full_frames; |
| 539 | pdev->full_frames = pdev->full_frames->next; |
| 540 | pdev->read_frame->next = NULL; |
| 541 | } |
| 542 | |
| 543 | if (pdev->read_frame != NULL) { |
Paulius Zaleckas | efad798b | 2008-02-03 15:42:53 +0200 | [diff] [blame] | 544 | /* Decompression is a lengthy process, so it's outside of the lock. |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 545 | This gives the isoc_handler the opportunity to fill more frames |
| 546 | in the mean time. |
| 547 | */ |
| 548 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
| 549 | ret = pwc_decompress(pdev); |
| 550 | spin_lock_irqsave(&pdev->ptrlock, flags); |
| 551 | |
| 552 | /* We're done with read_buffer, tack it to the end of the empty buffer list */ |
| 553 | if (pdev->empty_frames == NULL) { |
| 554 | pdev->empty_frames = pdev->read_frame; |
| 555 | pdev->empty_frames_tail = pdev->empty_frames; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | } |
| 557 | else { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 558 | pdev->empty_frames_tail->next = pdev->read_frame; |
| 559 | pdev->empty_frames_tail = pdev->read_frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 561 | pdev->read_frame = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | } |
| 563 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
| 564 | return ret; |
| 565 | } |
| 566 | |
| 567 | /** |
| 568 | \brief Advance pointers of image buffer (after each user request) |
| 569 | */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 570 | void pwc_next_image(struct pwc_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | { |
| 572 | pdev->image_used[pdev->fill_image] = 0; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 573 | pdev->fill_image = (pdev->fill_image + 1) % pwc_mbufs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | } |
| 575 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 576 | /** |
| 577 | * Print debug information when a frame is discarded because all of our buffer |
| 578 | * is full |
| 579 | */ |
| 580 | static void pwc_frame_dumped(struct pwc_device *pdev) |
| 581 | { |
| 582 | pdev->vframes_dumped++; |
| 583 | if (pdev->vframe_count < FRAME_LOWMARK) |
| 584 | return; |
| 585 | |
| 586 | if (pdev->vframes_dumped < 20) |
| 587 | PWC_DEBUG_FLOW("Dumping frame %d\n", pdev->vframe_count); |
| 588 | else if (pdev->vframes_dumped == 20) |
| 589 | PWC_DEBUG_FLOW("Dumping frame %d (last message)\n", |
| 590 | pdev->vframe_count); |
| 591 | } |
| 592 | |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 593 | static void pwc_snapshot_button(struct pwc_device *pdev, int down) |
| 594 | { |
| 595 | if (down) { |
| 596 | PWC_TRACE("Snapshot button pressed.\n"); |
| 597 | pdev->snapshot_button_status = 1; |
| 598 | } else { |
| 599 | PWC_TRACE("Snapshot button released.\n"); |
| 600 | } |
| 601 | |
| 602 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
| 603 | if (pdev->button_dev) { |
Lennart Poettering | bcd3e4b | 2009-06-11 11:19:33 -0300 | [diff] [blame] | 604 | input_report_key(pdev->button_dev, KEY_CAMERA, down); |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 605 | input_sync(pdev->button_dev); |
| 606 | } |
| 607 | #endif |
| 608 | } |
| 609 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 610 | static int pwc_rcv_short_packet(struct pwc_device *pdev, const struct pwc_frame_buf *fbuf) |
| 611 | { |
| 612 | int awake = 0; |
| 613 | |
| 614 | /* The ToUCam Fun CMOS sensor causes the firmware to send 2 or 3 bogus |
| 615 | frames on the USB wire after an exposure change. This conditition is |
| 616 | however detected in the cam and a bit is set in the header. |
| 617 | */ |
| 618 | if (pdev->type == 730) { |
| 619 | unsigned char *ptr = (unsigned char *)fbuf->data; |
| 620 | |
| 621 | if (ptr[1] == 1 && ptr[0] & 0x10) { |
| 622 | PWC_TRACE("Hyundai CMOS sensor bug. Dropping frame.\n"); |
| 623 | pdev->drop_frames += 2; |
| 624 | pdev->vframes_error++; |
| 625 | } |
| 626 | if ((ptr[0] ^ pdev->vmirror) & 0x01) { |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 627 | pwc_snapshot_button(pdev, ptr[0] & 0x01); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 628 | } |
| 629 | if ((ptr[0] ^ pdev->vmirror) & 0x02) { |
| 630 | if (ptr[0] & 0x02) |
| 631 | PWC_TRACE("Image is mirrored.\n"); |
| 632 | else |
| 633 | PWC_TRACE("Image is normal.\n"); |
| 634 | } |
| 635 | pdev->vmirror = ptr[0] & 0x03; |
| 636 | /* Sometimes the trailer of the 730 is still sent as a 4 byte packet |
| 637 | after a short frame; this condition is filtered out specifically. A 4 byte |
| 638 | frame doesn't make sense anyway. |
| 639 | So we get either this sequence: |
| 640 | drop_bit set -> 4 byte frame -> short frame -> good frame |
| 641 | Or this one: |
| 642 | drop_bit set -> short frame -> good frame |
| 643 | So we drop either 3 or 2 frames in all! |
| 644 | */ |
| 645 | if (fbuf->filled == 4) |
| 646 | pdev->drop_frames++; |
| 647 | } |
| 648 | else if (pdev->type == 740 || pdev->type == 720) { |
| 649 | unsigned char *ptr = (unsigned char *)fbuf->data; |
| 650 | if ((ptr[0] ^ pdev->vmirror) & 0x01) { |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 651 | pwc_snapshot_button(pdev, ptr[0] & 0x01); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 652 | } |
| 653 | pdev->vmirror = ptr[0] & 0x03; |
| 654 | } |
| 655 | |
| 656 | /* In case we were instructed to drop the frame, do so silently. |
| 657 | The buffer pointers are not updated either (but the counters are reset below). |
| 658 | */ |
| 659 | if (pdev->drop_frames > 0) |
| 660 | pdev->drop_frames--; |
| 661 | else { |
| 662 | /* Check for underflow first */ |
| 663 | if (fbuf->filled < pdev->frame_total_size) { |
| 664 | PWC_DEBUG_FLOW("Frame buffer underflow (%d bytes);" |
| 665 | " discarded.\n", fbuf->filled); |
| 666 | pdev->vframes_error++; |
| 667 | } |
| 668 | else { |
| 669 | /* Send only once per EOF */ |
| 670 | awake = 1; /* delay wake_ups */ |
| 671 | |
| 672 | /* Find our next frame to fill. This will always succeed, since we |
| 673 | * nick a frame from either empty or full list, but if we had to |
| 674 | * take it from the full list, it means a frame got dropped. |
| 675 | */ |
| 676 | if (pwc_next_fill_frame(pdev)) |
| 677 | pwc_frame_dumped(pdev); |
| 678 | |
| 679 | } |
| 680 | } /* !drop_frames */ |
| 681 | pdev->vframe_count++; |
| 682 | return awake; |
| 683 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
| 685 | /* This gets called for the Isochronous pipe (video). This is done in |
| 686 | * interrupt time, so it has to be fast, not crash, and not stall. Neat. |
| 687 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 688 | static void pwc_isoc_handler(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | { |
| 690 | struct pwc_device *pdev; |
| 691 | int i, fst, flen; |
| 692 | int awake; |
| 693 | struct pwc_frame_buf *fbuf; |
| 694 | unsigned char *fillptr = NULL, *iso_buf = NULL; |
| 695 | |
| 696 | awake = 0; |
| 697 | pdev = (struct pwc_device *)urb->context; |
| 698 | if (pdev == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 699 | PWC_ERROR("isoc_handler() called with NULL device?!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | return; |
| 701 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 702 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | if (urb->status == -ENOENT || urb->status == -ECONNRESET) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 704 | PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronuously.\n", urb, urb->status == -ENOENT ? "" : "a"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | return; |
| 706 | } |
| 707 | if (urb->status != -EINPROGRESS && urb->status != 0) { |
| 708 | const char *errmsg; |
| 709 | |
| 710 | errmsg = "Unknown"; |
| 711 | switch(urb->status) { |
| 712 | case -ENOSR: errmsg = "Buffer error (overrun)"; break; |
| 713 | case -EPIPE: errmsg = "Stalled (device not responding)"; break; |
| 714 | case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break; |
| 715 | case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break; |
| 716 | case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break; |
Pete Zaitcev | 38e2bfc | 2006-09-18 22:49:02 -0700 | [diff] [blame] | 717 | case -ETIME: errmsg = "Device does not respond"; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 719 | PWC_DEBUG_FLOW("pwc_isoc_handler() called with status %d [%s].\n", urb->status, errmsg); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 720 | /* Give up after a number of contiguous errors on the USB bus. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | Appearantly something is wrong so we simulate an unplug event. |
| 722 | */ |
| 723 | if (++pdev->visoc_errors > MAX_ISOC_ERRORS) |
| 724 | { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 725 | PWC_INFO("Too many ISOC errors, bailing out.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | pdev->error_status = EIO; |
| 727 | awake = 1; |
| 728 | wake_up_interruptible(&pdev->frameq); |
| 729 | } |
| 730 | goto handler_end; // ugly, but practical |
| 731 | } |
| 732 | |
| 733 | fbuf = pdev->fill_frame; |
| 734 | if (fbuf == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 735 | PWC_ERROR("pwc_isoc_handler without valid fill frame.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | awake = 1; |
| 737 | goto handler_end; |
| 738 | } |
| 739 | else { |
| 740 | fillptr = fbuf->data + fbuf->filled; |
| 741 | } |
| 742 | |
| 743 | /* Reset ISOC error counter. We did get here, after all. */ |
| 744 | pdev->visoc_errors = 0; |
| 745 | |
| 746 | /* vsync: 0 = don't copy data |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 747 | 1 = sync-hunt |
| 748 | 2 = synched |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | */ |
| 750 | /* Compact data */ |
| 751 | for (i = 0; i < urb->number_of_packets; i++) { |
| 752 | fst = urb->iso_frame_desc[i].status; |
| 753 | flen = urb->iso_frame_desc[i].actual_length; |
| 754 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; |
| 755 | if (fst == 0) { |
| 756 | if (flen > 0) { /* if valid data... */ |
| 757 | if (pdev->vsync > 0) { /* ...and we are not sync-hunting... */ |
| 758 | pdev->vsync = 2; |
| 759 | |
| 760 | /* ...copy data to frame buffer, if possible */ |
| 761 | if (flen + fbuf->filled > pdev->frame_total_size) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 762 | PWC_DEBUG_FLOW("Frame buffer overflow (flen = %d, frame_total_size = %d).\n", flen, pdev->frame_total_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | pdev->vsync = 0; /* Hmm, let's wait for an EOF (end-of-frame) */ |
| 764 | pdev->vframes_error++; |
| 765 | } |
| 766 | else { |
| 767 | memmove(fillptr, iso_buf, flen); |
| 768 | fillptr += flen; |
| 769 | } |
| 770 | } |
| 771 | fbuf->filled += flen; |
| 772 | } /* ..flen > 0 */ |
| 773 | |
| 774 | if (flen < pdev->vlast_packet_size) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 775 | /* Shorter packet... We probably have the end of an image-frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | wake up read() process and let select()/poll() do something. |
| 777 | Decompression is done in user time over there. |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 778 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | if (pdev->vsync == 2) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 780 | if (pwc_rcv_short_packet(pdev, fbuf)) { |
| 781 | awake = 1; |
| 782 | fbuf = pdev->fill_frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | } |
| 785 | fbuf->filled = 0; |
| 786 | fillptr = fbuf->data; |
| 787 | pdev->vsync = 1; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 788 | } |
| 789 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | pdev->vlast_packet_size = flen; |
| 791 | } /* ..status == 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | else { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 793 | /* This is normally not interesting to the user, unless |
Douglas Schilling Landgraf | ff699e6 | 2008-04-22 14:41:48 -0300 | [diff] [blame] | 794 | * you are really debugging something, default = 0 */ |
| 795 | static int iso_error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | iso_error++; |
| 797 | if (iso_error < 20) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 798 | PWC_DEBUG_FLOW("Iso frame %d of USB has error %d\n", i, fst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | } |
| 801 | |
| 802 | handler_end: |
| 803 | if (awake) |
| 804 | wake_up_interruptible(&pdev->frameq); |
| 805 | |
| 806 | urb->dev = pdev->udev; |
| 807 | i = usb_submit_urb(urb, GFP_ATOMIC); |
| 808 | if (i != 0) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 809 | PWC_ERROR("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 813 | int pwc_isoc_init(struct pwc_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | { |
| 815 | struct usb_device *udev; |
| 816 | struct urb *urb; |
| 817 | int i, j, ret; |
| 818 | |
| 819 | struct usb_interface *intf; |
| 820 | struct usb_host_interface *idesc = NULL; |
| 821 | |
| 822 | if (pdev == NULL) |
| 823 | return -EFAULT; |
| 824 | if (pdev->iso_init) |
| 825 | return 0; |
| 826 | pdev->vsync = 0; |
| 827 | udev = pdev->udev; |
| 828 | |
| 829 | /* Get the current alternate interface, adjust packet size */ |
| 830 | if (!udev->actconfig) |
| 831 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | intf = usb_ifnum_to_if(udev, 0); |
| 833 | if (intf) |
| 834 | idesc = usb_altnum_to_altsetting(intf, pdev->valternate); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | if (!idesc) |
| 837 | return -EFAULT; |
| 838 | |
| 839 | /* Search video endpoint */ |
| 840 | pdev->vmax_packet_size = -1; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 841 | for (i = 0; i < idesc->desc.bNumEndpoints; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | if ((idesc->endpoint[i].desc.bEndpointAddress & 0xF) == pdev->vendpoint) { |
| 843 | pdev->vmax_packet_size = le16_to_cpu(idesc->endpoint[i].desc.wMaxPacketSize); |
| 844 | break; |
| 845 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 846 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | if (pdev->vmax_packet_size < 0 || pdev->vmax_packet_size > ISO_MAX_FRAME_SIZE) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 849 | PWC_ERROR("Failed to find packet size for video endpoint in current alternate setting.\n"); |
Steven Cole | 093cf72 | 2005-05-03 19:07:24 -0600 | [diff] [blame] | 850 | return -ENFILE; /* Odd error, that should be noticeable */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | } |
| 852 | |
| 853 | /* Set alternate interface */ |
| 854 | ret = 0; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 855 | PWC_DEBUG_OPEN("Setting alternate interface %d\n", pdev->valternate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | ret = usb_set_interface(pdev->udev, 0, pdev->valternate); |
| 857 | if (ret < 0) |
| 858 | return ret; |
| 859 | |
| 860 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
| 861 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); |
| 862 | if (urb == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 863 | PWC_ERROR("Failed to allocate urb %d\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | ret = -ENOMEM; |
| 865 | break; |
| 866 | } |
| 867 | pdev->sbuf[i].urb = urb; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 868 | PWC_DEBUG_MEMORY("Allocated URB at 0x%p\n", urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | } |
| 870 | if (ret) { |
| 871 | /* De-allocate in reverse order */ |
Mariusz Kozlowski | 444f4f9 | 2006-11-16 16:38:57 +0100 | [diff] [blame] | 872 | while (i--) { |
Mariusz Kozlowski | 90b2625 | 2006-11-08 15:34:55 +0100 | [diff] [blame] | 873 | usb_free_urb(pdev->sbuf[i].urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | pdev->sbuf[i].urb = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | } |
| 876 | return ret; |
| 877 | } |
| 878 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 879 | /* init URB structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
| 881 | urb = pdev->sbuf[i].urb; |
| 882 | |
| 883 | urb->interval = 1; // devik |
| 884 | urb->dev = udev; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 885 | urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | urb->transfer_flags = URB_ISO_ASAP; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 887 | urb->transfer_buffer = pdev->sbuf[i].data; |
| 888 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; |
| 889 | urb->complete = pwc_isoc_handler; |
| 890 | urb->context = pdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | urb->start_frame = 0; |
| 892 | urb->number_of_packets = ISO_FRAMES_PER_DESC; |
| 893 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { |
| 894 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; |
| 895 | urb->iso_frame_desc[j].length = pdev->vmax_packet_size; |
| 896 | } |
| 897 | } |
| 898 | |
| 899 | /* link */ |
| 900 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
| 901 | ret = usb_submit_urb(pdev->sbuf[i].urb, GFP_KERNEL); |
| 902 | if (ret) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 903 | PWC_ERROR("isoc_init() submit_urb %d failed with error %d\n", i, ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | else |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 905 | PWC_DEBUG_MEMORY("URB 0x%p submitted.\n", pdev->sbuf[i].urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | /* All is done... */ |
| 909 | pdev->iso_init = 1; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 910 | PWC_DEBUG_OPEN("<< pwc_isoc_init()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | return 0; |
| 912 | } |
| 913 | |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 914 | static void pwc_iso_stop(struct pwc_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | { |
| 916 | int i; |
| 917 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | /* Unlinking ISOC buffers one by one */ |
| 919 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
| 920 | struct urb *urb; |
| 921 | |
| 922 | urb = pdev->sbuf[i].urb; |
Al Viro | 5fa1247 | 2008-03-29 03:07:38 +0000 | [diff] [blame] | 923 | if (urb) { |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 924 | PWC_DEBUG_MEMORY("Unlinking URB %p\n", urb); |
| 925 | usb_kill_urb(urb); |
| 926 | } |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | static void pwc_iso_free(struct pwc_device *pdev) |
| 931 | { |
| 932 | int i; |
| 933 | |
| 934 | /* Freeing ISOC buffers one by one */ |
| 935 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
| 936 | struct urb *urb; |
| 937 | |
| 938 | urb = pdev->sbuf[i].urb; |
Al Viro | 5fa1247 | 2008-03-29 03:07:38 +0000 | [diff] [blame] | 939 | if (urb) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 940 | PWC_DEBUG_MEMORY("Freeing URB\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | usb_free_urb(urb); |
| 942 | pdev->sbuf[i].urb = NULL; |
| 943 | } |
| 944 | } |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 945 | } |
| 946 | |
| 947 | void pwc_isoc_cleanup(struct pwc_device *pdev) |
| 948 | { |
| 949 | PWC_DEBUG_OPEN(">> pwc_isoc_cleanup()\n"); |
| 950 | if (pdev == NULL) |
| 951 | return; |
| 952 | if (pdev->iso_init == 0) |
| 953 | return; |
| 954 | |
| 955 | pwc_iso_stop(pdev); |
| 956 | pwc_iso_free(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
| 958 | /* Stop camera, but only if we are sure the camera is still there (unplug |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 959 | is signalled by EPIPE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | */ |
| 961 | if (pdev->error_status && pdev->error_status != EPIPE) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 962 | PWC_DEBUG_OPEN("Setting alternate interface 0.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | usb_set_interface(pdev->udev, 0, 0); |
| 964 | } |
| 965 | |
| 966 | pdev->iso_init = 0; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 967 | PWC_DEBUG_OPEN("<< pwc_isoc_cleanup()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | } |
| 969 | |
| 970 | int pwc_try_video_mode(struct pwc_device *pdev, int width, int height, int new_fps, int new_compression, int new_snapshot) |
| 971 | { |
| 972 | int ret, start; |
| 973 | |
| 974 | /* Stop isoc stuff */ |
| 975 | pwc_isoc_cleanup(pdev); |
| 976 | /* Reset parameters */ |
| 977 | pwc_reset_buffers(pdev); |
| 978 | /* Try to set video mode... */ |
| 979 | start = ret = pwc_set_video_mode(pdev, width, height, new_fps, new_compression, new_snapshot); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 980 | if (ret) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 981 | PWC_DEBUG_FLOW("pwc_set_video_mode attempt 1 failed.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | /* That failed... restore old mode (we know that worked) */ |
| 983 | start = pwc_set_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot); |
| 984 | if (start) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 985 | PWC_DEBUG_FLOW("pwc_set_video_mode attempt 2 failed.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | } |
| 987 | } |
| 988 | if (start == 0) |
| 989 | { |
| 990 | if (pwc_isoc_init(pdev) < 0) |
| 991 | { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 992 | PWC_WARNING("Failed to restart ISOC transfers in pwc_try_video_mode.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | ret = -EAGAIN; /* let's try again, who knows if it works a second time */ |
| 994 | } |
| 995 | } |
| 996 | pdev->drop_frames++; /* try to avoid garbage during switch */ |
| 997 | return ret; /* Return original error code */ |
| 998 | } |
| 999 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1000 | /********* |
| 1001 | * sysfs |
| 1002 | *********/ |
Kay Sievers | 54bd5b6 | 2007-10-08 16:26:13 -0300 | [diff] [blame] | 1003 | static struct pwc_device *cd_to_pwc(struct device *cd) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1004 | { |
| 1005 | struct video_device *vdev = to_video_device(cd); |
| 1006 | return video_get_drvdata(vdev); |
| 1007 | } |
| 1008 | |
Kay Sievers | 54bd5b6 | 2007-10-08 16:26:13 -0300 | [diff] [blame] | 1009 | static ssize_t show_pan_tilt(struct device *class_dev, |
| 1010 | struct device_attribute *attr, char *buf) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1011 | { |
| 1012 | struct pwc_device *pdev = cd_to_pwc(class_dev); |
| 1013 | return sprintf(buf, "%d %d\n", pdev->pan_angle, pdev->tilt_angle); |
| 1014 | } |
| 1015 | |
Kay Sievers | 54bd5b6 | 2007-10-08 16:26:13 -0300 | [diff] [blame] | 1016 | static ssize_t store_pan_tilt(struct device *class_dev, |
| 1017 | struct device_attribute *attr, |
| 1018 | const char *buf, size_t count) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1019 | { |
| 1020 | struct pwc_device *pdev = cd_to_pwc(class_dev); |
| 1021 | int pan, tilt; |
| 1022 | int ret = -EINVAL; |
| 1023 | |
| 1024 | if (strncmp(buf, "reset", 5) == 0) |
| 1025 | ret = pwc_mpt_reset(pdev, 0x3); |
| 1026 | |
| 1027 | else if (sscanf(buf, "%d %d", &pan, &tilt) > 0) |
| 1028 | ret = pwc_mpt_set_angle(pdev, pan, tilt); |
| 1029 | |
| 1030 | if (ret < 0) |
| 1031 | return ret; |
| 1032 | return strlen(buf); |
| 1033 | } |
Kay Sievers | 54bd5b6 | 2007-10-08 16:26:13 -0300 | [diff] [blame] | 1034 | static DEVICE_ATTR(pan_tilt, S_IRUGO | S_IWUSR, show_pan_tilt, |
| 1035 | store_pan_tilt); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1036 | |
Kay Sievers | 54bd5b6 | 2007-10-08 16:26:13 -0300 | [diff] [blame] | 1037 | static ssize_t show_snapshot_button_status(struct device *class_dev, |
| 1038 | struct device_attribute *attr, char *buf) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1039 | { |
| 1040 | struct pwc_device *pdev = cd_to_pwc(class_dev); |
| 1041 | int status = pdev->snapshot_button_status; |
| 1042 | pdev->snapshot_button_status = 0; |
| 1043 | return sprintf(buf, "%d\n", status); |
| 1044 | } |
| 1045 | |
Kay Sievers | 54bd5b6 | 2007-10-08 16:26:13 -0300 | [diff] [blame] | 1046 | static DEVICE_ATTR(button, S_IRUGO | S_IWUSR, show_snapshot_button_status, |
| 1047 | NULL); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1048 | |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1049 | static int pwc_create_sysfs_files(struct video_device *vdev) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1050 | { |
| 1051 | struct pwc_device *pdev = video_get_drvdata(vdev); |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1052 | int rc; |
| 1053 | |
Hans Verkuil | f894dfd | 2008-07-25 07:39:54 -0300 | [diff] [blame] | 1054 | rc = device_create_file(&vdev->dev, &dev_attr_button); |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1055 | if (rc) |
| 1056 | goto err; |
| 1057 | if (pdev->features & FEATURE_MOTOR_PANTILT) { |
Hans Verkuil | f894dfd | 2008-07-25 07:39:54 -0300 | [diff] [blame] | 1058 | rc = device_create_file(&vdev->dev, &dev_attr_pan_tilt); |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1059 | if (rc) goto err_button; |
| 1060 | } |
| 1061 | |
| 1062 | return 0; |
| 1063 | |
| 1064 | err_button: |
Hans Verkuil | f894dfd | 2008-07-25 07:39:54 -0300 | [diff] [blame] | 1065 | device_remove_file(&vdev->dev, &dev_attr_button); |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1066 | err: |
Hans Verkuil | f894dfd | 2008-07-25 07:39:54 -0300 | [diff] [blame] | 1067 | PWC_ERROR("Could not create sysfs files.\n"); |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1068 | return rc; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1069 | } |
| 1070 | |
| 1071 | static void pwc_remove_sysfs_files(struct video_device *vdev) |
| 1072 | { |
| 1073 | struct pwc_device *pdev = video_get_drvdata(vdev); |
| 1074 | if (pdev->features & FEATURE_MOTOR_PANTILT) |
Hans Verkuil | f894dfd | 2008-07-25 07:39:54 -0300 | [diff] [blame] | 1075 | device_remove_file(&vdev->dev, &dev_attr_pan_tilt); |
| 1076 | device_remove_file(&vdev->dev, &dev_attr_button); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1077 | } |
| 1078 | |
Trent Piepho | 05ad390 | 2007-01-30 23:26:01 -0300 | [diff] [blame] | 1079 | #ifdef CONFIG_USB_PWC_DEBUG |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1080 | static const char *pwc_sensor_type_to_string(unsigned int sensor_type) |
| 1081 | { |
| 1082 | switch(sensor_type) { |
| 1083 | case 0x00: |
| 1084 | return "Hyundai CMOS sensor"; |
| 1085 | case 0x20: |
| 1086 | return "Sony CCD sensor + TDA8787"; |
| 1087 | case 0x2E: |
| 1088 | return "Sony CCD sensor + Exas 98L59"; |
| 1089 | case 0x2F: |
| 1090 | return "Sony CCD sensor + ADI 9804"; |
| 1091 | case 0x30: |
| 1092 | return "Sharp CCD sensor + TDA8787"; |
| 1093 | case 0x3E: |
| 1094 | return "Sharp CCD sensor + Exas 98L59"; |
| 1095 | case 0x3F: |
| 1096 | return "Sharp CCD sensor + ADI 9804"; |
| 1097 | case 0x40: |
| 1098 | return "UPA 1021 sensor"; |
| 1099 | case 0x100: |
| 1100 | return "VGA sensor"; |
| 1101 | case 0x101: |
| 1102 | return "PAL MR sensor"; |
| 1103 | default: |
Trent Piepho | 657de3c | 2006-06-20 00:30:57 -0300 | [diff] [blame] | 1104 | return "unknown type of sensor"; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1105 | } |
| 1106 | } |
| 1107 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | |
| 1109 | /***************************************************************************/ |
| 1110 | /* Video4Linux functions */ |
| 1111 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 1112 | static int pwc_video_open(struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1114 | int i, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | struct video_device *vdev = video_devdata(file); |
| 1116 | struct pwc_device *pdev; |
| 1117 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1118 | PWC_DEBUG_OPEN(">> video_open called(vdev = 0x%p).\n", vdev); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1119 | |
Hans Verkuil | 601e944 | 2008-08-23 07:24:07 -0300 | [diff] [blame] | 1120 | pdev = video_get_drvdata(vdev); |
Eric Sesterhenn | 5d9a276 | 2006-11-30 05:26:46 +0100 | [diff] [blame] | 1121 | BUG_ON(!pdev); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1122 | if (pdev->vopen) { |
| 1123 | PWC_DEBUG_OPEN("I'm busy, someone is using the device.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | return -EBUSY; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1125 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1126 | |
Matthias Kaehlcke | b9378fd | 2007-07-02 10:04:52 -0300 | [diff] [blame] | 1127 | mutex_lock(&pdev->modlock); |
Martin Fuzzey | 5c8e240 | 2009-03-09 20:16:00 -0300 | [diff] [blame] | 1128 | pwc_construct(pdev); /* set min/max sizes correct */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | if (!pdev->usb_init) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1130 | PWC_DEBUG_OPEN("Doing first time initialization.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | pdev->usb_init = 1; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1132 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1133 | /* Query sensor type */ |
| 1134 | ret = pwc_get_cmos_sensor(pdev, &i); |
| 1135 | if (ret >= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1137 | PWC_DEBUG_OPEN("This %s camera is equipped with a %s (%d).\n", |
| 1138 | pdev->vdev->name, |
| 1139 | pwc_sensor_type_to_string(i), i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | /* Turn on camera */ |
| 1144 | if (power_save) { |
| 1145 | i = pwc_camera_power(pdev, 1); |
| 1146 | if (i < 0) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1147 | PWC_DEBUG_OPEN("Failed to restore power to the camera! (%d)\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | } |
| 1149 | /* Set LED on/off time */ |
| 1150 | if (pwc_set_leds(pdev, led_on, led_off) < 0) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1151 | PWC_DEBUG_OPEN("Failed to set LED on/off time.\n"); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | |
| 1154 | /* So far, so good. Allocate memory. */ |
| 1155 | i = pwc_allocate_buffers(pdev); |
| 1156 | if (i < 0) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1157 | PWC_DEBUG_OPEN("Failed to allocate buffers memory.\n"); |
| 1158 | pwc_free_buffers(pdev); |
Matthias Kaehlcke | b9378fd | 2007-07-02 10:04:52 -0300 | [diff] [blame] | 1159 | mutex_unlock(&pdev->modlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | return i; |
| 1161 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | /* Reset buffers & parameters */ |
| 1164 | pwc_reset_buffers(pdev); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1165 | for (i = 0; i < pwc_mbufs; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | pdev->image_used[i] = 0; |
| 1167 | pdev->vframe_count = 0; |
| 1168 | pdev->vframes_dumped = 0; |
| 1169 | pdev->vframes_error = 0; |
| 1170 | pdev->visoc_errors = 0; |
| 1171 | pdev->error_status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | pwc_construct(pdev); /* set min/max sizes correct */ |
| 1173 | |
| 1174 | /* Set some defaults */ |
| 1175 | pdev->vsnapshot = 0; |
| 1176 | |
| 1177 | /* Start iso pipe for video; first try the last used video size |
| 1178 | (or the default one); if that fails try QCIF/10 or QSIF/10; |
| 1179 | it that fails too, give up. |
| 1180 | */ |
| 1181 | i = pwc_set_video_mode(pdev, pwc_image_sizes[pdev->vsize].x, pwc_image_sizes[pdev->vsize].y, pdev->vframes, pdev->vcompression, 0); |
| 1182 | if (i) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1183 | unsigned int default_resolution; |
| 1184 | PWC_DEBUG_OPEN("First attempt at set_video_mode failed.\n"); |
| 1185 | if (pdev->type>= 730) |
| 1186 | default_resolution = PSZ_QSIF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | else |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1188 | default_resolution = PSZ_QCIF; |
| 1189 | |
| 1190 | i = pwc_set_video_mode(pdev, |
| 1191 | pwc_image_sizes[default_resolution].x, |
| 1192 | pwc_image_sizes[default_resolution].y, |
| 1193 | 10, |
| 1194 | pdev->vcompression, |
| 1195 | 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | } |
| 1197 | if (i) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1198 | PWC_DEBUG_OPEN("Second attempt at set_video_mode failed.\n"); |
| 1199 | pwc_free_buffers(pdev); |
Matthias Kaehlcke | b9378fd | 2007-07-02 10:04:52 -0300 | [diff] [blame] | 1200 | mutex_unlock(&pdev->modlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | return i; |
| 1202 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1203 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | i = pwc_isoc_init(pdev); |
| 1205 | if (i) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1206 | PWC_DEBUG_OPEN("Failed to init ISOC stuff = %d.\n", i); |
| 1207 | pwc_isoc_cleanup(pdev); |
| 1208 | pwc_free_buffers(pdev); |
Matthias Kaehlcke | b9378fd | 2007-07-02 10:04:52 -0300 | [diff] [blame] | 1209 | mutex_unlock(&pdev->modlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | return i; |
| 1211 | } |
| 1212 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1213 | /* Initialize the webcam to sane value */ |
| 1214 | pwc_set_brightness(pdev, 0x7fff); |
| 1215 | pwc_set_agc(pdev, 1, 0); |
| 1216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | pdev->vopen++; |
| 1218 | file->private_data = vdev; |
Matthias Kaehlcke | b9378fd | 2007-07-02 10:04:52 -0300 | [diff] [blame] | 1219 | mutex_unlock(&pdev->modlock); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1220 | PWC_DEBUG_OPEN("<< video_open() returns 0.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | return 0; |
| 1222 | } |
| 1223 | |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1224 | |
| 1225 | static void pwc_cleanup(struct pwc_device *pdev) |
| 1226 | { |
| 1227 | pwc_remove_sysfs_files(pdev->vdev); |
| 1228 | video_unregister_device(pdev->vdev); |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 1229 | |
| 1230 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
| 1231 | if (pdev->button_dev) { |
| 1232 | input_unregister_device(pdev->button_dev); |
| 1233 | input_free_device(pdev->button_dev); |
| 1234 | kfree(pdev->button_dev->phys); |
| 1235 | pdev->button_dev = NULL; |
| 1236 | } |
| 1237 | #endif |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1238 | } |
| 1239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | /* Note that all cleanup is done in the reverse order as in _open */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 1241 | static int pwc_video_close(struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | { |
| 1243 | struct video_device *vdev = file->private_data; |
| 1244 | struct pwc_device *pdev; |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1245 | int i, hint; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1247 | PWC_DEBUG_OPEN(">> video_close called(vdev = 0x%p).\n", vdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1249 | lock_kernel(); |
Hans Verkuil | 601e944 | 2008-08-23 07:24:07 -0300 | [diff] [blame] | 1250 | pdev = video_get_drvdata(vdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | if (pdev->vopen == 0) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1252 | PWC_DEBUG_MODULE("video_close() called on closed device?\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | |
| 1254 | /* Dump statistics, but only if a reasonable amount of frames were |
| 1255 | processed (to prevent endless log-entries in case of snap-shot |
| 1256 | programs) |
| 1257 | */ |
| 1258 | if (pdev->vframe_count > 20) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1259 | PWC_DEBUG_MODULE("Closing video device: %d frames received, dumped %d frames, %d frames with errors.\n", pdev->vframe_count, pdev->vframes_dumped, pdev->vframes_error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1261 | if (DEVICE_USE_CODEC1(pdev->type)) |
| 1262 | pwc_dec1_exit(); |
| 1263 | else |
| 1264 | pwc_dec23_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | |
| 1266 | pwc_isoc_cleanup(pdev); |
| 1267 | pwc_free_buffers(pdev); |
| 1268 | |
| 1269 | /* Turn off LEDS and power down camera, but only when not unplugged */ |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1270 | if (!pdev->unplugged) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | /* Turn LEDs off */ |
| 1272 | if (pwc_set_leds(pdev, 0, 0) < 0) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1273 | PWC_DEBUG_MODULE("Failed to set LED on/off time.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | if (power_save) { |
| 1275 | i = pwc_camera_power(pdev, 0); |
| 1276 | if (i < 0) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1277 | PWC_ERROR("Failed to power down camera (%d)\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | } |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1279 | pdev->vopen--; |
Jean Delvare | 7b9fbc3 | 2007-09-03 11:51:51 -0300 | [diff] [blame] | 1280 | PWC_DEBUG_OPEN("<< video_close() vopen=%d\n", pdev->vopen); |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1281 | } else { |
| 1282 | pwc_cleanup(pdev); |
| 1283 | /* Free memory (don't set pdev to 0 just yet) */ |
| 1284 | kfree(pdev); |
| 1285 | /* search device_hint[] table if we occupy a slot, by any chance */ |
| 1286 | for (hint = 0; hint < MAX_DEV_HINTS; hint++) |
| 1287 | if (device_hint[hint].pdev == pdev) |
| 1288 | device_hint[hint].pdev = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | } |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1290 | unlock_kernel(); |
| 1291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | return 0; |
| 1293 | } |
| 1294 | |
| 1295 | /* |
| 1296 | * FIXME: what about two parallel reads ???? |
| 1297 | * ANSWER: Not supported. You can't open the device more than once, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1298 | despite what the V4L1 interface says. First, I don't see |
| 1299 | the need, second there's no mechanism of alerting the |
| 1300 | 2nd/3rd/... process of events like changing image size. |
| 1301 | And I don't see the point of blocking that for the |
| 1302 | 2nd/3rd/... process. |
| 1303 | In multi-threaded environments reading parallel from any |
| 1304 | device is tricky anyhow. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | */ |
| 1306 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1307 | static ssize_t pwc_video_read(struct file *file, char __user *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | size_t count, loff_t *ppos) |
| 1309 | { |
| 1310 | struct video_device *vdev = file->private_data; |
| 1311 | struct pwc_device *pdev; |
| 1312 | int noblock = file->f_flags & O_NONBLOCK; |
| 1313 | DECLARE_WAITQUEUE(wait, current); |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1314 | int bytes_to_read, rv = 0; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1315 | void *image_buffer_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1317 | PWC_DEBUG_READ("pwc_video_read(vdev=0x%p, buf=%p, count=%zd) called.\n", |
| 1318 | vdev, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | if (vdev == NULL) |
| 1320 | return -EFAULT; |
Hans Verkuil | 601e944 | 2008-08-23 07:24:07 -0300 | [diff] [blame] | 1321 | pdev = video_get_drvdata(vdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | if (pdev == NULL) |
| 1323 | return -EFAULT; |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1324 | |
| 1325 | mutex_lock(&pdev->modlock); |
| 1326 | if (pdev->error_status) { |
| 1327 | rv = -pdev->error_status; /* Something happened, report what. */ |
| 1328 | goto err_out; |
| 1329 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | |
| 1331 | /* In case we're doing partial reads, we don't have to wait for a frame */ |
| 1332 | if (pdev->image_read_pos == 0) { |
| 1333 | /* Do wait queueing according to the (doc)book */ |
| 1334 | add_wait_queue(&pdev->frameq, &wait); |
| 1335 | while (pdev->full_frames == NULL) { |
| 1336 | /* Check for unplugged/etc. here */ |
| 1337 | if (pdev->error_status) { |
| 1338 | remove_wait_queue(&pdev->frameq, &wait); |
| 1339 | set_current_state(TASK_RUNNING); |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1340 | rv = -pdev->error_status ; |
| 1341 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1343 | if (noblock) { |
| 1344 | remove_wait_queue(&pdev->frameq, &wait); |
| 1345 | set_current_state(TASK_RUNNING); |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1346 | rv = -EWOULDBLOCK; |
| 1347 | goto err_out; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1348 | } |
| 1349 | if (signal_pending(current)) { |
| 1350 | remove_wait_queue(&pdev->frameq, &wait); |
| 1351 | set_current_state(TASK_RUNNING); |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1352 | rv = -ERESTARTSYS; |
| 1353 | goto err_out; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1354 | } |
| 1355 | schedule(); |
| 1356 | set_current_state(TASK_INTERRUPTIBLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | } |
| 1358 | remove_wait_queue(&pdev->frameq, &wait); |
| 1359 | set_current_state(TASK_RUNNING); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | /* Decompress and release frame */ |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1362 | if (pwc_handle_frame(pdev)) { |
| 1363 | rv = -EFAULT; |
| 1364 | goto err_out; |
| 1365 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | } |
| 1367 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1368 | PWC_DEBUG_READ("Copying data to user space.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | if (pdev->vpalette == VIDEO_PALETTE_RAW) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1370 | bytes_to_read = pdev->frame_size + sizeof(struct pwc_raw_frame); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | else |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1372 | bytes_to_read = pdev->view.size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | |
| 1374 | /* copy bytes to user space; we allow for partial reads */ |
| 1375 | if (count + pdev->image_read_pos > bytes_to_read) |
| 1376 | count = bytes_to_read - pdev->image_read_pos; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1377 | image_buffer_addr = pdev->image_data; |
| 1378 | image_buffer_addr += pdev->images[pdev->fill_image].offset; |
| 1379 | image_buffer_addr += pdev->image_read_pos; |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1380 | if (copy_to_user(buf, image_buffer_addr, count)) { |
| 1381 | rv = -EFAULT; |
| 1382 | goto err_out; |
| 1383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1384 | pdev->image_read_pos += count; |
| 1385 | if (pdev->image_read_pos >= bytes_to_read) { /* All data has been read */ |
| 1386 | pdev->image_read_pos = 0; |
| 1387 | pwc_next_image(pdev); |
| 1388 | } |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1389 | mutex_unlock(&pdev->modlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | return count; |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1391 | err_out: |
| 1392 | mutex_unlock(&pdev->modlock); |
| 1393 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | } |
| 1395 | |
| 1396 | static unsigned int pwc_video_poll(struct file *file, poll_table *wait) |
| 1397 | { |
| 1398 | struct video_device *vdev = file->private_data; |
| 1399 | struct pwc_device *pdev; |
| 1400 | |
| 1401 | if (vdev == NULL) |
| 1402 | return -EFAULT; |
Hans Verkuil | 601e944 | 2008-08-23 07:24:07 -0300 | [diff] [blame] | 1403 | pdev = video_get_drvdata(vdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | if (pdev == NULL) |
| 1405 | return -EFAULT; |
| 1406 | |
| 1407 | poll_wait(file, &pdev->frameq, wait); |
| 1408 | if (pdev->error_status) |
| 1409 | return POLLERR; |
| 1410 | if (pdev->full_frames != NULL) /* we have frames waiting */ |
| 1411 | return (POLLIN | POLLRDNORM); |
| 1412 | |
| 1413 | return 0; |
| 1414 | } |
| 1415 | |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 1416 | static long pwc_video_ioctl(struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | unsigned int cmd, unsigned long arg) |
| 1418 | { |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1419 | struct video_device *vdev = file->private_data; |
| 1420 | struct pwc_device *pdev; |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 1421 | long r = -ENODEV; |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1422 | |
| 1423 | if (!vdev) |
| 1424 | goto out; |
Hans Verkuil | 601e944 | 2008-08-23 07:24:07 -0300 | [diff] [blame] | 1425 | pdev = video_get_drvdata(vdev); |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1426 | |
| 1427 | mutex_lock(&pdev->modlock); |
| 1428 | if (!pdev->unplugged) |
Hans Verkuil | f473bf7 | 2008-11-01 08:25:11 -0300 | [diff] [blame] | 1429 | r = video_usercopy(file, cmd, arg, pwc_video_do_ioctl); |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1430 | mutex_unlock(&pdev->modlock); |
| 1431 | out: |
| 1432 | return r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | } |
| 1434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | static int pwc_video_mmap(struct file *file, struct vm_area_struct *vma) |
| 1436 | { |
| 1437 | struct video_device *vdev = file->private_data; |
| 1438 | struct pwc_device *pdev; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1439 | unsigned long start; |
| 1440 | unsigned long size; |
| 1441 | unsigned long page, pos = 0; |
| 1442 | int index; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1443 | |
Harvey Harrison | 645635b | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 1444 | PWC_DEBUG_MEMORY(">> %s\n", __func__); |
Hans Verkuil | 601e944 | 2008-08-23 07:24:07 -0300 | [diff] [blame] | 1445 | pdev = video_get_drvdata(vdev); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1446 | size = vma->vm_end - vma->vm_start; |
| 1447 | start = vma->vm_start; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1448 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1449 | /* Find the idx buffer for this mapping */ |
| 1450 | for (index = 0; index < pwc_mbufs; index++) { |
| 1451 | pos = pdev->images[index].offset; |
| 1452 | if ((pos>>PAGE_SHIFT) == vma->vm_pgoff) |
| 1453 | break; |
| 1454 | } |
| 1455 | if (index == MAX_IMAGES) |
| 1456 | return -EINVAL; |
| 1457 | if (index == 0) { |
| 1458 | /* |
| 1459 | * Special case for v4l1. In v4l1, we map only one big buffer, |
| 1460 | * but in v4l2 each buffer is mapped |
| 1461 | */ |
| 1462 | unsigned long total_size; |
| 1463 | total_size = pwc_mbufs * pdev->len_per_image; |
| 1464 | if (size != pdev->len_per_image && size != total_size) { |
| 1465 | PWC_ERROR("Wrong size (%lu) needed to be len_per_image=%d or total_size=%lu\n", |
| 1466 | size, pdev->len_per_image, total_size); |
| 1467 | return -EINVAL; |
| 1468 | } |
| 1469 | } else if (size > pdev->len_per_image) |
| 1470 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1472 | vma->vm_flags |= VM_IO; /* from 2.6.9-acX */ |
| 1473 | |
| 1474 | pos += (unsigned long)pdev->image_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | while (size > 0) { |
| 1476 | page = vmalloc_to_pfn((void *)pos); |
| 1477 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) |
| 1478 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | start += PAGE_SIZE; |
| 1480 | pos += PAGE_SIZE; |
| 1481 | if (size > PAGE_SIZE) |
| 1482 | size -= PAGE_SIZE; |
| 1483 | else |
| 1484 | size = 0; |
| 1485 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | return 0; |
| 1487 | } |
| 1488 | |
| 1489 | /***************************************************************************/ |
| 1490 | /* USB functions */ |
| 1491 | |
| 1492 | /* This function gets called when a new device is plugged in or the usb core |
| 1493 | * is loaded. |
| 1494 | */ |
| 1495 | |
| 1496 | static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id) |
| 1497 | { |
| 1498 | struct usb_device *udev = interface_to_usbdev(intf); |
| 1499 | struct pwc_device *pdev = NULL; |
| 1500 | int vendor_id, product_id, type_id; |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1501 | int i, hint, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | int features = 0; |
| 1503 | int video_nr = -1; /* default: use next available device */ |
| 1504 | char serial_number[30], *name; |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 1505 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
| 1506 | char *phys = NULL; |
| 1507 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1509 | vendor_id = le16_to_cpu(udev->descriptor.idVendor); |
| 1510 | product_id = le16_to_cpu(udev->descriptor.idProduct); |
| 1511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | /* Check if we can handle this device */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1513 | PWC_DEBUG_PROBE("probe() called [%04X %04X], if %d\n", |
| 1514 | vendor_id, product_id, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | intf->altsetting->desc.bInterfaceNumber); |
| 1516 | |
| 1517 | /* the interfaces are probed one by one. We are only interested in the |
| 1518 | video interface (0) now. |
| 1519 | Interface 1 is the Audio Control, and interface 2 Audio itself. |
| 1520 | */ |
| 1521 | if (intf->altsetting->desc.bInterfaceNumber > 0) |
| 1522 | return -ENODEV; |
| 1523 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | if (vendor_id == 0x0471) { |
| 1525 | switch (product_id) { |
| 1526 | case 0x0302: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1527 | PWC_INFO("Philips PCA645VC USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | name = "Philips 645 webcam"; |
| 1529 | type_id = 645; |
| 1530 | break; |
| 1531 | case 0x0303: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1532 | PWC_INFO("Philips PCA646VC USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | name = "Philips 646 webcam"; |
| 1534 | type_id = 646; |
| 1535 | break; |
| 1536 | case 0x0304: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1537 | PWC_INFO("Askey VC010 type 2 USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | name = "Askey VC010 webcam"; |
| 1539 | type_id = 646; |
| 1540 | break; |
| 1541 | case 0x0307: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1542 | PWC_INFO("Philips PCVC675K (Vesta) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | name = "Philips 675 webcam"; |
| 1544 | type_id = 675; |
| 1545 | break; |
| 1546 | case 0x0308: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1547 | PWC_INFO("Philips PCVC680K (Vesta Pro) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | name = "Philips 680 webcam"; |
| 1549 | type_id = 680; |
| 1550 | break; |
| 1551 | case 0x030C: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1552 | PWC_INFO("Philips PCVC690K (Vesta Pro Scan) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | name = "Philips 690 webcam"; |
| 1554 | type_id = 690; |
| 1555 | break; |
| 1556 | case 0x0310: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1557 | PWC_INFO("Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | name = "Philips 730 webcam"; |
| 1559 | type_id = 730; |
| 1560 | break; |
| 1561 | case 0x0311: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1562 | PWC_INFO("Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | name = "Philips 740 webcam"; |
| 1564 | type_id = 740; |
| 1565 | break; |
| 1566 | case 0x0312: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1567 | PWC_INFO("Philips PCVC750K (ToUCam Pro Scan) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | name = "Philips 750 webcam"; |
| 1569 | type_id = 750; |
| 1570 | break; |
| 1571 | case 0x0313: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1572 | PWC_INFO("Philips PCVC720K/40 (ToUCam XS) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | name = "Philips 720K/40 webcam"; |
| 1574 | type_id = 720; |
| 1575 | break; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1576 | case 0x0329: |
| 1577 | PWC_INFO("Philips SPC 900NC USB webcam detected.\n"); |
| 1578 | name = "Philips SPC 900NC webcam"; |
Luc Saillard | 9ee6d78 | 2007-04-22 23:54:36 -0300 | [diff] [blame] | 1579 | type_id = 740; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1580 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | default: |
| 1582 | return -ENODEV; |
| 1583 | break; |
| 1584 | } |
| 1585 | } |
| 1586 | else if (vendor_id == 0x069A) { |
| 1587 | switch(product_id) { |
| 1588 | case 0x0001: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1589 | PWC_INFO("Askey VC010 type 1 USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | name = "Askey VC010 webcam"; |
| 1591 | type_id = 645; |
| 1592 | break; |
| 1593 | default: |
| 1594 | return -ENODEV; |
| 1595 | break; |
| 1596 | } |
| 1597 | } |
| 1598 | else if (vendor_id == 0x046d) { |
| 1599 | switch(product_id) { |
| 1600 | case 0x08b0: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1601 | PWC_INFO("Logitech QuickCam Pro 3000 USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | name = "Logitech QuickCam Pro 3000"; |
| 1603 | type_id = 740; /* CCD sensor */ |
| 1604 | break; |
| 1605 | case 0x08b1: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1606 | PWC_INFO("Logitech QuickCam Notebook Pro USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | name = "Logitech QuickCam Notebook Pro"; |
| 1608 | type_id = 740; /* CCD sensor */ |
| 1609 | break; |
| 1610 | case 0x08b2: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1611 | PWC_INFO("Logitech QuickCam 4000 Pro USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | name = "Logitech QuickCam Pro 4000"; |
| 1613 | type_id = 740; /* CCD sensor */ |
| 1614 | break; |
| 1615 | case 0x08b3: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1616 | PWC_INFO("Logitech QuickCam Zoom USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | name = "Logitech QuickCam Zoom"; |
| 1618 | type_id = 740; /* CCD sensor */ |
| 1619 | break; |
| 1620 | case 0x08B4: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1621 | PWC_INFO("Logitech QuickCam Zoom (new model) USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | name = "Logitech QuickCam Zoom"; |
| 1623 | type_id = 740; /* CCD sensor */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1624 | power_save = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | break; |
| 1626 | case 0x08b5: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1627 | PWC_INFO("Logitech QuickCam Orbit/Sphere USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | name = "Logitech QuickCam Orbit"; |
| 1629 | type_id = 740; /* CCD sensor */ |
| 1630 | features |= FEATURE_MOTOR_PANTILT; |
| 1631 | break; |
| 1632 | case 0x08b6: |
Jean Tourrilhes | a63e157 | 2007-03-21 16:29:16 -0300 | [diff] [blame] | 1633 | PWC_INFO("Logitech/Cisco VT Camera webcam detected.\n"); |
| 1634 | name = "Cisco VT Camera"; |
| 1635 | type_id = 740; /* CCD sensor */ |
| 1636 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | case 0x08b7: |
Mauro Carvalho Chehab | 6b1ce3c | 2007-03-21 16:35:28 -0300 | [diff] [blame] | 1638 | PWC_INFO("Logitech ViewPort AV 100 webcam detected.\n"); |
| 1639 | name = "Logitech ViewPort AV 100"; |
| 1640 | type_id = 740; /* CCD sensor */ |
| 1641 | break; |
| 1642 | case 0x08b8: /* Where this released? */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1643 | PWC_INFO("Logitech QuickCam detected (reserved ID).\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | name = "Logitech QuickCam (res.)"; |
| 1645 | type_id = 730; /* Assuming CMOS */ |
| 1646 | break; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1647 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | return -ENODEV; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1649 | break; |
| 1650 | } |
| 1651 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | else if (vendor_id == 0x055d) { |
| 1653 | /* I don't know the difference between the C10 and the C30; |
| 1654 | I suppose the difference is the sensor, but both cameras |
| 1655 | work equally well with a type_id of 675 |
| 1656 | */ |
| 1657 | switch(product_id) { |
| 1658 | case 0x9000: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1659 | PWC_INFO("Samsung MPC-C10 USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | name = "Samsung MPC-C10"; |
| 1661 | type_id = 675; |
| 1662 | break; |
| 1663 | case 0x9001: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1664 | PWC_INFO("Samsung MPC-C30 USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | name = "Samsung MPC-C30"; |
| 1666 | type_id = 675; |
| 1667 | break; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1668 | case 0x9002: |
| 1669 | PWC_INFO("Samsung SNC-35E (v3.0) USB webcam detected.\n"); |
| 1670 | name = "Samsung MPC-C30"; |
| 1671 | type_id = 740; |
| 1672 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | default: |
| 1674 | return -ENODEV; |
| 1675 | break; |
| 1676 | } |
| 1677 | } |
| 1678 | else if (vendor_id == 0x041e) { |
| 1679 | switch(product_id) { |
| 1680 | case 0x400c: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1681 | PWC_INFO("Creative Labs Webcam 5 detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | name = "Creative Labs Webcam 5"; |
| 1683 | type_id = 730; |
| 1684 | break; |
| 1685 | case 0x4011: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1686 | PWC_INFO("Creative Labs Webcam Pro Ex detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | name = "Creative Labs Webcam Pro Ex"; |
| 1688 | type_id = 740; |
| 1689 | break; |
| 1690 | default: |
| 1691 | return -ENODEV; |
| 1692 | break; |
| 1693 | } |
| 1694 | } |
| 1695 | else if (vendor_id == 0x04cc) { |
| 1696 | switch(product_id) { |
| 1697 | case 0x8116: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1698 | PWC_INFO("Sotec Afina Eye USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | name = "Sotec Afina Eye"; |
| 1700 | type_id = 730; |
| 1701 | break; |
| 1702 | default: |
| 1703 | return -ENODEV; |
| 1704 | break; |
| 1705 | } |
| 1706 | } |
| 1707 | else if (vendor_id == 0x06be) { |
| 1708 | switch(product_id) { |
| 1709 | case 0x8116: |
| 1710 | /* This is essentially the same cam as the Sotec Afina Eye */ |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1711 | PWC_INFO("AME Co. Afina Eye USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | name = "AME Co. Afina Eye"; |
| 1713 | type_id = 750; |
| 1714 | break; |
| 1715 | default: |
| 1716 | return -ENODEV; |
| 1717 | break; |
| 1718 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1719 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | } |
| 1721 | else if (vendor_id == 0x0d81) { |
| 1722 | switch(product_id) { |
| 1723 | case 0x1900: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1724 | PWC_INFO("Visionite VCS-UC300 USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | name = "Visionite VCS-UC300"; |
| 1726 | type_id = 740; /* CCD sensor */ |
| 1727 | break; |
| 1728 | case 0x1910: |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1729 | PWC_INFO("Visionite VCS-UM100 USB webcam detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | name = "Visionite VCS-UM100"; |
| 1731 | type_id = 730; /* CMOS sensor */ |
| 1732 | break; |
| 1733 | default: |
| 1734 | return -ENODEV; |
| 1735 | break; |
| 1736 | } |
| 1737 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1738 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | return -ENODEV; /* Not any of the know types; but the list keeps growing. */ |
| 1740 | |
| 1741 | memset(serial_number, 0, 30); |
| 1742 | usb_string(udev, udev->descriptor.iSerialNumber, serial_number, 29); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1743 | PWC_DEBUG_PROBE("Device serial number is %s\n", serial_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | |
| 1745 | if (udev->descriptor.bNumConfigurations > 1) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1746 | PWC_WARNING("Warning: more than 1 configuration available.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | |
| 1748 | /* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */ |
Eric Sesterhenn | 80b6ca4 | 2006-02-27 21:29:43 +0100 | [diff] [blame] | 1749 | pdev = kzalloc(sizeof(struct pwc_device), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | if (pdev == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1751 | PWC_ERROR("Oops, could not allocate memory for pwc_device.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | return -ENOMEM; |
| 1753 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | pdev->type = type_id; |
| 1755 | pdev->vsize = default_size; |
| 1756 | pdev->vframes = default_fps; |
| 1757 | strcpy(pdev->serial, serial_number); |
| 1758 | pdev->features = features; |
| 1759 | if (vendor_id == 0x046D && product_id == 0x08B5) |
| 1760 | { |
| 1761 | /* Logitech QuickCam Orbit |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1762 | The ranges have been determined experimentally; they may differ from cam to cam. |
| 1763 | Also, the exact ranges left-right and up-down are different for my cam |
| 1764 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1765 | pdev->angle_range.pan_min = -7000; |
| 1766 | pdev->angle_range.pan_max = 7000; |
| 1767 | pdev->angle_range.tilt_min = -3000; |
| 1768 | pdev->angle_range.tilt_max = 2500; |
| 1769 | } |
| 1770 | |
Matthias Kaehlcke | b9378fd | 2007-07-02 10:04:52 -0300 | [diff] [blame] | 1771 | mutex_init(&pdev->modlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | spin_lock_init(&pdev->ptrlock); |
| 1773 | |
| 1774 | pdev->udev = udev; |
| 1775 | init_waitqueue_head(&pdev->frameq); |
| 1776 | pdev->vcompression = pwc_preferred_compression; |
| 1777 | |
| 1778 | /* Allocate video_device structure */ |
| 1779 | pdev->vdev = video_device_alloc(); |
Al Viro | 5fa1247 | 2008-03-29 03:07:38 +0000 | [diff] [blame] | 1780 | if (!pdev->vdev) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1781 | PWC_ERROR("Err, cannot allocate video_device struture. Failing probe."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | kfree(pdev); |
| 1783 | return -ENOMEM; |
| 1784 | } |
| 1785 | memcpy(pdev->vdev, &pwc_template, sizeof(pwc_template)); |
Lennart Poettering | 52a85e1 | 2009-06-04 16:18:13 -0300 | [diff] [blame] | 1786 | pdev->vdev->parent = &intf->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | strcpy(pdev->vdev->name, name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | video_set_drvdata(pdev->vdev, pdev); |
| 1789 | |
| 1790 | pdev->release = le16_to_cpu(udev->descriptor.bcdDevice); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1791 | PWC_DEBUG_PROBE("Release: %04x\n", pdev->release); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | |
| 1793 | /* Now search device_hint[] table for a match, so we can hint a node number. */ |
| 1794 | for (hint = 0; hint < MAX_DEV_HINTS; hint++) { |
| 1795 | if (((device_hint[hint].type == -1) || (device_hint[hint].type == pdev->type)) && |
| 1796 | (device_hint[hint].pdev == NULL)) { |
| 1797 | /* so far, so good... try serial number */ |
| 1798 | if ((device_hint[hint].serial_number[0] == '*') || !strcmp(device_hint[hint].serial_number, serial_number)) { |
Trent Piepho | 657de3c | 2006-06-20 00:30:57 -0300 | [diff] [blame] | 1799 | /* match! */ |
| 1800 | video_nr = device_hint[hint].device_node; |
| 1801 | PWC_DEBUG_PROBE("Found hint, will try to register as /dev/video%d\n", video_nr); |
| 1802 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | } |
| 1804 | } |
| 1805 | } |
| 1806 | |
| 1807 | pdev->vdev->release = video_device_release; |
| 1808 | i = video_register_device(pdev->vdev, VFL_TYPE_GRABBER, video_nr); |
| 1809 | if (i < 0) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1810 | PWC_ERROR("Failed to register as video device (%d).\n", i); |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1811 | rc = i; |
| 1812 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | } |
| 1814 | else { |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 1815 | PWC_INFO("Registered as /dev/video%d.\n", pdev->vdev->num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | } |
| 1817 | |
| 1818 | /* occupy slot */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1819 | if (hint < MAX_DEV_HINTS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | device_hint[hint].pdev = pdev; |
| 1821 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1822 | PWC_DEBUG_PROBE("probe() function returning struct at 0x%p.\n", pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | usb_set_intfdata (intf, pdev); |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1824 | rc = pwc_create_sysfs_files(pdev->vdev); |
| 1825 | if (rc) |
| 1826 | goto err_unreg; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1827 | |
| 1828 | /* Set the leds off */ |
| 1829 | pwc_set_leds(pdev, 0, 0); |
| 1830 | pwc_camera_power(pdev, 0); |
| 1831 | |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 1832 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
| 1833 | /* register webcam snapshot button input device */ |
| 1834 | pdev->button_dev = input_allocate_device(); |
| 1835 | if (!pdev->button_dev) { |
| 1836 | PWC_ERROR("Err, insufficient memory for webcam snapshot button device."); |
| 1837 | return -ENOMEM; |
| 1838 | } |
| 1839 | |
| 1840 | pdev->button_dev->name = "PWC snapshot button"; |
| 1841 | phys = kasprintf(GFP_KERNEL,"usb-%s-%s", pdev->udev->bus->bus_name, pdev->udev->devpath); |
| 1842 | if (!phys) { |
| 1843 | input_free_device(pdev->button_dev); |
| 1844 | return -ENOMEM; |
| 1845 | } |
| 1846 | pdev->button_dev->phys = phys; |
| 1847 | usb_to_input_id(pdev->udev, &pdev->button_dev->id); |
| 1848 | pdev->button_dev->dev.parent = &pdev->udev->dev; |
| 1849 | pdev->button_dev->evbit[0] = BIT_MASK(EV_KEY); |
Lennart Poettering | bcd3e4b | 2009-06-11 11:19:33 -0300 | [diff] [blame] | 1850 | pdev->button_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA); |
Nam Phạm Thành | e32a7ecc | 2009-01-12 02:50:17 -0300 | [diff] [blame] | 1851 | |
| 1852 | rc = input_register_device(pdev->button_dev); |
| 1853 | if (rc) { |
| 1854 | input_free_device(pdev->button_dev); |
| 1855 | kfree(pdev->button_dev->phys); |
| 1856 | pdev->button_dev = NULL; |
| 1857 | return rc; |
| 1858 | } |
| 1859 | #endif |
| 1860 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | return 0; |
Jeff Garzik | c12e3be | 2006-10-13 07:17:32 -0300 | [diff] [blame] | 1862 | |
| 1863 | err_unreg: |
| 1864 | if (hint < MAX_DEV_HINTS) |
| 1865 | device_hint[hint].pdev = NULL; |
| 1866 | video_unregister_device(pdev->vdev); |
| 1867 | err: |
| 1868 | video_device_release(pdev->vdev); /* Drip... drip... drip... */ |
| 1869 | kfree(pdev); /* Oops, no memory leaks please */ |
| 1870 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | } |
| 1872 | |
| 1873 | /* The user janked out the cable... */ |
| 1874 | static void usb_pwc_disconnect(struct usb_interface *intf) |
| 1875 | { |
| 1876 | struct pwc_device *pdev; |
| 1877 | int hint; |
| 1878 | |
| 1879 | lock_kernel(); |
| 1880 | pdev = usb_get_intfdata (intf); |
| 1881 | usb_set_intfdata (intf, NULL); |
| 1882 | if (pdev == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1883 | PWC_ERROR("pwc_disconnect() Called without private pointer.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | goto disconnect_out; |
| 1885 | } |
| 1886 | if (pdev->udev == NULL) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1887 | PWC_ERROR("pwc_disconnect() already called for %p\n", pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | goto disconnect_out; |
| 1889 | } |
| 1890 | if (pdev->udev != interface_to_usbdev(intf)) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1891 | PWC_ERROR("pwc_disconnect() Woops: pointer mismatch udev/pdev.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1892 | goto disconnect_out; |
| 1893 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1894 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | /* We got unplugged; this is signalled by an EPIPE error code */ |
| 1896 | if (pdev->vopen) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1897 | PWC_INFO("Disconnected while webcam is in use!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | pdev->error_status = EPIPE; |
| 1899 | } |
| 1900 | |
| 1901 | /* Alert waiting processes */ |
| 1902 | wake_up_interruptible(&pdev->frameq); |
| 1903 | /* Wait until device is closed */ |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1904 | if(pdev->vopen) { |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1905 | mutex_lock(&pdev->modlock); |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1906 | pdev->unplugged = 1; |
Oliver Neukum | 0b67f5c | 2007-09-26 10:19:01 -0300 | [diff] [blame] | 1907 | mutex_unlock(&pdev->modlock); |
| 1908 | pwc_iso_stop(pdev); |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1909 | } else { |
| 1910 | /* Device is closed, so we can safely unregister it */ |
| 1911 | PWC_DEBUG_PROBE("Unregistering video device in disconnect().\n"); |
| 1912 | pwc_cleanup(pdev); |
| 1913 | /* Free memory (don't set pdev to 0 just yet) */ |
| 1914 | kfree(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | |
| 1916 | disconnect_out: |
Oliver Neukum | 85237f2 | 2007-08-21 07:10:42 +0200 | [diff] [blame] | 1917 | /* search device_hint[] table if we occupy a slot, by any chance */ |
| 1918 | for (hint = 0; hint < MAX_DEV_HINTS; hint++) |
| 1919 | if (device_hint[hint].pdev == pdev) |
| 1920 | device_hint[hint].pdev = NULL; |
| 1921 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | |
| 1923 | unlock_kernel(); |
| 1924 | } |
| 1925 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | /* *grunt* We have to do atoi ourselves :-( */ |
| 1927 | static int pwc_atoi(const char *s) |
| 1928 | { |
| 1929 | int k = 0; |
| 1930 | |
| 1931 | k = 0; |
| 1932 | while (*s != '\0' && *s >= '0' && *s <= '9') { |
| 1933 | k = 10 * k + (*s - '0'); |
| 1934 | s++; |
| 1935 | } |
| 1936 | return k; |
| 1937 | } |
| 1938 | |
| 1939 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1940 | /* |
| 1941 | * Initialization code & module stuff |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | */ |
| 1943 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1944 | static char *size; |
| 1945 | static int fps; |
| 1946 | static int fbufs; |
| 1947 | static int mbufs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | static int compression = -1; |
| 1949 | static int leds[2] = { -1, -1 }; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1950 | static unsigned int leds_nargs; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1951 | static char *dev_hint[MAX_DEV_HINTS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1952 | static unsigned int dev_hint_nargs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1954 | module_param(size, charp, 0444); |
| 1955 | module_param(fps, int, 0444); |
| 1956 | module_param(fbufs, int, 0444); |
| 1957 | module_param(mbufs, int, 0444); |
Trent Piepho | 05ad390 | 2007-01-30 23:26:01 -0300 | [diff] [blame] | 1958 | #ifdef CONFIG_USB_PWC_DEBUG |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1959 | module_param_named(trace, pwc_trace, int, 0644); |
| 1960 | #endif |
| 1961 | module_param(power_save, int, 0444); |
| 1962 | module_param(compression, int, 0444); |
| 1963 | module_param_array(leds, int, &leds_nargs, 0444); |
| 1964 | module_param_array(dev_hint, charp, &dev_hint_nargs, 0444); |
| 1965 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | MODULE_PARM_DESC(size, "Initial image size. One of sqcif, qsif, qcif, sif, cif, vga"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | MODULE_PARM_DESC(fps, "Initial frames per second. Varies with model, useful range 5-30"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | MODULE_PARM_DESC(fbufs, "Number of internal frame buffers to reserve"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | MODULE_PARM_DESC(mbufs, "Number of external (mmap()ed) image buffers"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | MODULE_PARM_DESC(trace, "For debugging purposes"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | MODULE_PARM_DESC(power_save, "Turn power save feature in camera on or off"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | MODULE_PARM_DESC(compression, "Preferred compression quality. Range 0 (uncompressed) to 3 (high compression)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | MODULE_PARM_DESC(leds, "LED on,off time in milliseconds"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | MODULE_PARM_DESC(dev_hint, "Device node hints"); |
| 1975 | |
| 1976 | MODULE_DESCRIPTION("Philips & OEM USB webcam driver"); |
| 1977 | MODULE_AUTHOR("Luc Saillard <luc@saillard.org>"); |
| 1978 | MODULE_LICENSE("GPL"); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1979 | MODULE_ALIAS("pwcx"); |
| 1980 | MODULE_VERSION( PWC_VERSION ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | |
| 1982 | static int __init usb_pwc_init(void) |
| 1983 | { |
| 1984 | int i, sz; |
| 1985 | char *sizenames[PSZ_MAX] = { "sqcif", "qsif", "qcif", "sif", "cif", "vga" }; |
| 1986 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1987 | PWC_INFO("Philips webcam module version " PWC_VERSION " loaded.\n"); |
| 1988 | PWC_INFO("Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.\n"); |
| 1989 | PWC_INFO("Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,\n"); |
| 1990 | PWC_INFO("the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | |
| 1992 | if (fps) { |
| 1993 | if (fps < 4 || fps > 30) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1994 | PWC_ERROR("Framerate out of bounds (4-30).\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | return -EINVAL; |
| 1996 | } |
| 1997 | default_fps = fps; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 1998 | PWC_DEBUG_MODULE("Default framerate set to %d.\n", default_fps); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | } |
| 2000 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2001 | if (size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | /* string; try matching with array */ |
| 2003 | for (sz = 0; sz < PSZ_MAX; sz++) { |
| 2004 | if (!strcmp(sizenames[sz], size)) { /* Found! */ |
| 2005 | default_size = sz; |
| 2006 | break; |
| 2007 | } |
| 2008 | } |
| 2009 | if (sz == PSZ_MAX) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2010 | PWC_ERROR("Size not recognized; try size=[sqcif | qsif | qcif | sif | cif | vga].\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | return -EINVAL; |
| 2012 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2013 | PWC_DEBUG_MODULE("Default image size set to %s [%dx%d].\n", sizenames[default_size], pwc_image_sizes[default_size].x, pwc_image_sizes[default_size].y); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | } |
| 2015 | if (mbufs) { |
| 2016 | if (mbufs < 1 || mbufs > MAX_IMAGES) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2017 | PWC_ERROR("Illegal number of mmap() buffers; use a number between 1 and %d.\n", MAX_IMAGES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | return -EINVAL; |
| 2019 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2020 | pwc_mbufs = mbufs; |
| 2021 | PWC_DEBUG_MODULE("Number of image buffers set to %d.\n", pwc_mbufs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2022 | } |
| 2023 | if (fbufs) { |
| 2024 | if (fbufs < 2 || fbufs > MAX_FRAMES) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2025 | PWC_ERROR("Illegal number of frame buffers; use a number between 2 and %d.\n", MAX_FRAMES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | return -EINVAL; |
| 2027 | } |
| 2028 | default_fbufs = fbufs; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2029 | PWC_DEBUG_MODULE("Number of frame buffers set to %d.\n", default_fbufs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | } |
Trent Piepho | 05ad390 | 2007-01-30 23:26:01 -0300 | [diff] [blame] | 2031 | #ifdef CONFIG_USB_PWC_DEBUG |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2032 | if (pwc_trace >= 0) { |
| 2033 | PWC_DEBUG_MODULE("Trace options: 0x%04x\n", pwc_trace); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2035 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | if (compression >= 0) { |
| 2037 | if (compression > 3) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2038 | PWC_ERROR("Invalid compression setting; use a number between 0 (uncompressed) and 3 (high).\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | return -EINVAL; |
| 2040 | } |
| 2041 | pwc_preferred_compression = compression; |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2042 | PWC_DEBUG_MODULE("Preferred compression set to %d.\n", pwc_preferred_compression); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | } |
| 2044 | if (power_save) |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2045 | PWC_DEBUG_MODULE("Enabling power save on open/close.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | if (leds[0] >= 0) |
| 2047 | led_on = leds[0]; |
| 2048 | if (leds[1] >= 0) |
| 2049 | led_off = leds[1]; |
| 2050 | |
Steven Cole | 093cf72 | 2005-05-03 19:07:24 -0600 | [diff] [blame] | 2051 | /* Big device node whoopla. Basically, it allows you to assign a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | device node (/dev/videoX) to a camera, based on its type |
| 2053 | & serial number. The format is [type[.serialnumber]:]node. |
| 2054 | |
| 2055 | Any camera that isn't matched by these rules gets the next |
| 2056 | available free device node. |
| 2057 | */ |
| 2058 | for (i = 0; i < MAX_DEV_HINTS; i++) { |
| 2059 | char *s, *colon, *dot; |
| 2060 | |
| 2061 | /* This loop also initializes the array */ |
| 2062 | device_hint[i].pdev = NULL; |
| 2063 | s = dev_hint[i]; |
| 2064 | if (s != NULL && *s != '\0') { |
| 2065 | device_hint[i].type = -1; /* wildcard */ |
| 2066 | strcpy(device_hint[i].serial_number, "*"); |
| 2067 | |
| 2068 | /* parse string: chop at ':' & '/' */ |
| 2069 | colon = dot = s; |
| 2070 | while (*colon != '\0' && *colon != ':') |
| 2071 | colon++; |
| 2072 | while (*dot != '\0' && *dot != '.') |
| 2073 | dot++; |
| 2074 | /* Few sanity checks */ |
| 2075 | if (*dot != '\0' && dot > colon) { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2076 | PWC_ERROR("Malformed camera hint: the colon must be after the dot.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | return -EINVAL; |
| 2078 | } |
| 2079 | |
| 2080 | if (*colon == '\0') { |
| 2081 | /* No colon */ |
| 2082 | if (*dot != '\0') { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2083 | PWC_ERROR("Malformed camera hint: no colon + device node given.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | return -EINVAL; |
| 2085 | } |
| 2086 | else { |
| 2087 | /* No type or serial number specified, just a number. */ |
| 2088 | device_hint[i].device_node = pwc_atoi(s); |
| 2089 | } |
| 2090 | } |
| 2091 | else { |
| 2092 | /* There's a colon, so we have at least a type and a device node */ |
| 2093 | device_hint[i].type = pwc_atoi(s); |
| 2094 | device_hint[i].device_node = pwc_atoi(colon + 1); |
| 2095 | if (*dot != '\0') { |
| 2096 | /* There's a serial number as well */ |
| 2097 | int k; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2098 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | dot++; |
| 2100 | k = 0; |
| 2101 | while (*dot != ':' && k < 29) { |
| 2102 | device_hint[i].serial_number[k++] = *dot; |
| 2103 | dot++; |
| 2104 | } |
| 2105 | device_hint[i].serial_number[k] = '\0'; |
| 2106 | } |
| 2107 | } |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2108 | PWC_TRACE("device_hint[%d]:\n", i); |
| 2109 | PWC_TRACE(" type : %d\n", device_hint[i].type); |
| 2110 | PWC_TRACE(" serial# : %s\n", device_hint[i].serial_number); |
| 2111 | PWC_TRACE(" node : %d\n", device_hint[i].device_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | } |
| 2113 | else |
| 2114 | device_hint[i].type = 0; /* not filled */ |
| 2115 | } /* ..for MAX_DEV_HINTS */ |
| 2116 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2117 | PWC_DEBUG_PROBE("Registering driver at address 0x%p.\n", &pwc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | return usb_register(&pwc_driver); |
| 2119 | } |
| 2120 | |
| 2121 | static void __exit usb_pwc_exit(void) |
| 2122 | { |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2123 | PWC_DEBUG_MODULE("Deregistering driver.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | usb_deregister(&pwc_driver); |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2125 | PWC_INFO("Philips webcam module removed.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | } |
| 2127 | |
| 2128 | module_init(usb_pwc_init); |
| 2129 | module_exit(usb_pwc_exit); |
| 2130 | |
Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 2131 | /* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |