| 1 | /* |
| 2 | * Zoran 364xx based USB webcam module version 0.73 |
| 3 | * |
| 4 | * Allows you to use your USB webcam with V4L2 applications |
| 5 | * This is still in heavy developpement ! |
| 6 | * |
| 7 | * Copyright (C) 2004 Antoine Jacquet <royale@zerezo.com> |
| 8 | * http://royale.zerezo.com/zr364xx/ |
| 9 | * |
| 10 | * Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers |
| 11 | * V4L2 version inspired by meye.c driver |
| 12 | * |
| 13 | * Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers. |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify |
| 16 | * it under the terms of the GNU General Public License as published by |
| 17 | * the Free Software Foundation; either version 2 of the License, or |
| 18 | * (at your option) any later version. |
| 19 | * |
| 20 | * This program is distributed in the hope that it will be useful, |
| 21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | * GNU General Public License for more details. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License |
| 26 | * along with this program; if not, write to the Free Software |
| 27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/usb.h> |
| 34 | #include <linux/vmalloc.h> |
| 35 | #include <linux/slab.h> |
| 36 | #include <linux/proc_fs.h> |
| 37 | #include <linux/highmem.h> |
| 38 | #include <media/v4l2-common.h> |
| 39 | #include <media/v4l2-ioctl.h> |
| 40 | #include <media/videobuf-vmalloc.h> |
| 41 | |
| 42 | |
| 43 | /* Version Information */ |
| 44 | #define DRIVER_VERSION "0.7.4" |
| 45 | #define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/" |
| 46 | #define DRIVER_DESC "Zoran 364xx" |
| 47 | |
| 48 | |
| 49 | /* Camera */ |
| 50 | #define FRAMES 1 |
| 51 | #define MAX_FRAME_SIZE 200000 |
| 52 | #define BUFFER_SIZE 0x1000 |
| 53 | #define CTRL_TIMEOUT 500 |
| 54 | |
| 55 | #define ZR364XX_DEF_BUFS 4 |
| 56 | #define ZR364XX_READ_IDLE 0 |
| 57 | #define ZR364XX_READ_FRAME 1 |
| 58 | |
| 59 | /* Debug macro */ |
| 60 | #define DBG(fmt, args...) \ |
| 61 | do { \ |
| 62 | if (debug) { \ |
| 63 | printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \ |
| 64 | } \ |
| 65 | } while (0) |
| 66 | |
| 67 | /*#define FULL_DEBUG 1*/ |
| 68 | #ifdef FULL_DEBUG |
| 69 | #define _DBG DBG |
| 70 | #else |
| 71 | #define _DBG(fmt, args...) |
| 72 | #endif |
| 73 | |
| 74 | /* Init methods, need to find nicer names for these |
| 75 | * the exact names of the chipsets would be the best if someone finds it */ |
| 76 | #define METHOD0 0 |
| 77 | #define METHOD1 1 |
| 78 | #define METHOD2 2 |
| 79 | #define METHOD3 3 |
| 80 | |
| 81 | |
| 82 | /* Module parameters */ |
| 83 | static int debug; |
| 84 | static int mode; |
| 85 | |
| 86 | |
| 87 | /* Module parameters interface */ |
| 88 | module_param(debug, int, 0644); |
| 89 | MODULE_PARM_DESC(debug, "Debug level"); |
| 90 | module_param(mode, int, 0644); |
| 91 | MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480"); |
| 92 | |
| 93 | |
| 94 | /* Devices supported by this driver |
| 95 | * .driver_info contains the init method used by the camera */ |
| 96 | static struct usb_device_id device_table[] = { |
| 97 | {USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 }, |
| 98 | {USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 }, |
| 99 | {USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 }, |
| 100 | {USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 }, |
| 101 | {USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 }, |
| 102 | {USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 }, |
| 103 | {USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 }, |
| 104 | {USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 }, |
| 105 | {USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 }, |
| 106 | {USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 }, |
| 107 | {USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 }, |
| 108 | {USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 }, |
| 109 | {USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 }, |
| 110 | {USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 }, |
| 111 | {USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 }, |
| 112 | {USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 }, |
| 113 | {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 }, |
| 114 | {USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 }, |
| 115 | {USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 }, |
| 116 | {USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 }, |
| 117 | {USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 }, |
| 118 | {} /* Terminating entry */ |
| 119 | }; |
| 120 | |
| 121 | MODULE_DEVICE_TABLE(usb, device_table); |
| 122 | |
| 123 | struct zr364xx_mode { |
| 124 | u32 color; /* output video color format */ |
| 125 | u32 brightness; /* brightness */ |
| 126 | }; |
| 127 | |
| 128 | /* frame structure */ |
| 129 | struct zr364xx_framei { |
| 130 | unsigned long ulState; /* ulState:ZR364XX_READ_IDLE, |
| 131 | ZR364XX_READ_FRAME */ |
| 132 | void *lpvbits; /* image data */ |
| 133 | unsigned long cur_size; /* current data copied to it */ |
| 134 | }; |
| 135 | |
| 136 | /* image buffer structure */ |
| 137 | struct zr364xx_bufferi { |
| 138 | unsigned long dwFrames; /* number of frames in buffer */ |
| 139 | struct zr364xx_framei frame[FRAMES]; /* array of FRAME structures */ |
| 140 | }; |
| 141 | |
| 142 | struct zr364xx_dmaqueue { |
| 143 | struct list_head active; |
| 144 | struct zr364xx_camera *cam; |
| 145 | }; |
| 146 | |
| 147 | struct zr364xx_pipeinfo { |
| 148 | u32 transfer_size; |
| 149 | u8 *transfer_buffer; |
| 150 | u32 state; |
| 151 | void *stream_urb; |
| 152 | void *cam; /* back pointer to zr364xx_camera struct */ |
| 153 | u32 err_count; |
| 154 | u32 idx; |
| 155 | }; |
| 156 | |
| 157 | struct zr364xx_fmt { |
| 158 | char *name; |
| 159 | u32 fourcc; |
| 160 | int depth; |
| 161 | }; |
| 162 | |
| 163 | /* image formats. */ |
| 164 | static const struct zr364xx_fmt formats[] = { |
| 165 | { |
| 166 | .name = "JPG", |
| 167 | .fourcc = V4L2_PIX_FMT_JPEG, |
| 168 | .depth = 24 |
| 169 | } |
| 170 | }; |
| 171 | |
| 172 | /* Camera stuff */ |
| 173 | struct zr364xx_camera { |
| 174 | struct usb_device *udev; /* save off the usb device pointer */ |
| 175 | struct usb_interface *interface;/* the interface for this device */ |
| 176 | struct video_device *vdev; /* v4l video device */ |
| 177 | int nb; |
| 178 | struct zr364xx_bufferi buffer; |
| 179 | int skip; |
| 180 | int width; |
| 181 | int height; |
| 182 | int method; |
| 183 | struct mutex lock; |
| 184 | struct mutex open_lock; |
| 185 | int users; |
| 186 | |
| 187 | spinlock_t slock; |
| 188 | struct zr364xx_dmaqueue vidq; |
| 189 | int resources; |
| 190 | int last_frame; |
| 191 | int cur_frame; |
| 192 | unsigned long frame_count; |
| 193 | int b_acquire; |
| 194 | struct zr364xx_pipeinfo pipe[1]; |
| 195 | |
| 196 | u8 read_endpoint; |
| 197 | |
| 198 | const struct zr364xx_fmt *fmt; |
| 199 | struct videobuf_queue vb_vidq; |
| 200 | enum v4l2_buf_type type; |
| 201 | struct zr364xx_mode mode; |
| 202 | }; |
| 203 | |
| 204 | /* buffer for one video frame */ |
| 205 | struct zr364xx_buffer { |
| 206 | /* common v4l buffer stuff -- must be first */ |
| 207 | struct videobuf_buffer vb; |
| 208 | const struct zr364xx_fmt *fmt; |
| 209 | }; |
| 210 | |
| 211 | /* function used to send initialisation commands to the camera */ |
| 212 | static int send_control_msg(struct usb_device *udev, u8 request, u16 value, |
| 213 | u16 index, unsigned char *cp, u16 size) |
| 214 | { |
| 215 | int status; |
| 216 | |
| 217 | unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL); |
| 218 | if (!transfer_buffer) { |
| 219 | dev_err(&udev->dev, "kmalloc(%d) failed\n", size); |
| 220 | return -ENOMEM; |
| 221 | } |
| 222 | |
| 223 | memcpy(transfer_buffer, cp, size); |
| 224 | |
| 225 | status = usb_control_msg(udev, |
| 226 | usb_sndctrlpipe(udev, 0), |
| 227 | request, |
| 228 | USB_DIR_OUT | USB_TYPE_VENDOR | |
| 229 | USB_RECIP_DEVICE, value, index, |
| 230 | transfer_buffer, size, CTRL_TIMEOUT); |
| 231 | |
| 232 | kfree(transfer_buffer); |
| 233 | |
| 234 | if (status < 0) |
| 235 | dev_err(&udev->dev, |
| 236 | "Failed sending control message, error %d.\n", status); |
| 237 | |
| 238 | return status; |
| 239 | } |
| 240 | |
| 241 | |
| 242 | /* Control messages sent to the camera to initialize it |
| 243 | * and launch the capture */ |
| 244 | typedef struct { |
| 245 | unsigned int value; |
| 246 | unsigned int size; |
| 247 | unsigned char *bytes; |
| 248 | } message; |
| 249 | |
| 250 | /* method 0 */ |
| 251 | static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| 252 | static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 }; |
| 253 | static unsigned char m0d3[] = { 0, 0 }; |
| 254 | static message m0[] = { |
| 255 | {0x1f30, 0, NULL}, |
| 256 | {0xd000, 0, NULL}, |
| 257 | {0x3370, sizeof(m0d1), m0d1}, |
| 258 | {0x2000, 0, NULL}, |
| 259 | {0x2f0f, 0, NULL}, |
| 260 | {0x2610, sizeof(m0d2), m0d2}, |
| 261 | {0xe107, 0, NULL}, |
| 262 | {0x2502, 0, NULL}, |
| 263 | {0x1f70, 0, NULL}, |
| 264 | {0xd000, 0, NULL}, |
| 265 | {0x9a01, sizeof(m0d3), m0d3}, |
| 266 | {-1, -1, NULL} |
| 267 | }; |
| 268 | |
| 269 | /* method 1 */ |
| 270 | static unsigned char m1d1[] = { 0xff, 0xff }; |
| 271 | static unsigned char m1d2[] = { 0x00, 0x00 }; |
| 272 | static message m1[] = { |
| 273 | {0x1f30, 0, NULL}, |
| 274 | {0xd000, 0, NULL}, |
| 275 | {0xf000, 0, NULL}, |
| 276 | {0x2000, 0, NULL}, |
| 277 | {0x2f0f, 0, NULL}, |
| 278 | {0x2650, 0, NULL}, |
| 279 | {0xe107, 0, NULL}, |
| 280 | {0x2502, sizeof(m1d1), m1d1}, |
| 281 | {0x1f70, 0, NULL}, |
| 282 | {0xd000, 0, NULL}, |
| 283 | {0xd000, 0, NULL}, |
| 284 | {0xd000, 0, NULL}, |
| 285 | {0x9a01, sizeof(m1d2), m1d2}, |
| 286 | {-1, -1, NULL} |
| 287 | }; |
| 288 | |
| 289 | /* method 2 */ |
| 290 | static unsigned char m2d1[] = { 0xff, 0xff }; |
| 291 | static message m2[] = { |
| 292 | {0x1f30, 0, NULL}, |
| 293 | {0xf000, 0, NULL}, |
| 294 | {0x2000, 0, NULL}, |
| 295 | {0x2f0f, 0, NULL}, |
| 296 | {0x2650, 0, NULL}, |
| 297 | {0xe107, 0, NULL}, |
| 298 | {0x2502, sizeof(m2d1), m2d1}, |
| 299 | {0x1f70, 0, NULL}, |
| 300 | {-1, -1, NULL} |
| 301 | }; |
| 302 | |
| 303 | /* init table */ |
| 304 | static message *init[4] = { m0, m1, m2, m2 }; |
| 305 | |
| 306 | |
| 307 | /* JPEG static data in header (Huffman table, etc) */ |
| 308 | static unsigned char header1[] = { |
| 309 | 0xFF, 0xD8, |
| 310 | /* |
| 311 | 0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F', |
| 312 | 0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88, |
| 313 | */ |
| 314 | 0xFF, 0xDB, 0x00, 0x84 |
| 315 | }; |
| 316 | static unsigned char header2[] = { |
| 317 | 0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, |
| 318 | 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 319 | 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, |
| 320 | 0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, |
| 321 | 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01, |
| 322 | 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, |
| 323 | 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, |
| 324 | 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33, |
| 325 | 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25, |
| 326 | 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, |
| 327 | 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, |
| 328 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 329 | 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, |
| 330 | 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, |
| 331 | 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, |
| 332 | 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, |
| 333 | 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, |
| 334 | 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2, |
| 335 | 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, |
| 336 | 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F, |
| 337 | 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
| 338 | 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, |
| 339 | 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5, |
| 340 | 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, |
| 341 | 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, |
| 342 | 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, |
| 343 | 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, |
| 344 | 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, |
| 345 | 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, |
| 346 | 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, |
| 347 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, |
| 348 | 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, |
| 349 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, |
| 350 | 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, |
| 351 | 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, |
| 352 | 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, |
| 353 | 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, |
| 354 | 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, |
| 355 | 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, |
| 356 | 0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01, |
| 357 | 0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, |
| 358 | 0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, |
| 359 | 0x00, 0x3F, 0x00 |
| 360 | }; |
| 361 | static unsigned char header3; |
| 362 | |
| 363 | /* ------------------------------------------------------------------ |
| 364 | Videobuf operations |
| 365 | ------------------------------------------------------------------*/ |
| 366 | |
| 367 | static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, |
| 368 | unsigned int *size) |
| 369 | { |
| 370 | struct zr364xx_camera *cam = vq->priv_data; |
| 371 | |
| 372 | *size = cam->width * cam->height * (cam->fmt->depth >> 3); |
| 373 | |
| 374 | if (*count == 0) |
| 375 | *count = ZR364XX_DEF_BUFS; |
| 376 | |
| 377 | if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024) |
| 378 | *count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size; |
| 379 | |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf) |
| 384 | { |
| 385 | _DBG("%s\n", __func__); |
| 386 | |
| 387 | if (in_interrupt()) |
| 388 | BUG(); |
| 389 | |
| 390 | videobuf_vmalloc_free(&buf->vb); |
| 391 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
| 392 | } |
| 393 | |
| 394 | static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, |
| 395 | enum v4l2_field field) |
| 396 | { |
| 397 | struct zr364xx_camera *cam = vq->priv_data; |
| 398 | struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, |
| 399 | vb); |
| 400 | int rc; |
| 401 | |
| 402 | DBG("%s, field=%d, fmt name = %s\n", __func__, field, cam->fmt != NULL ? |
| 403 | cam->fmt->name : ""); |
| 404 | if (cam->fmt == NULL) |
| 405 | return -EINVAL; |
| 406 | |
| 407 | buf->vb.size = cam->width * cam->height * (cam->fmt->depth >> 3); |
| 408 | |
| 409 | if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) { |
| 410 | DBG("invalid buffer prepare\n"); |
| 411 | return -EINVAL; |
| 412 | } |
| 413 | |
| 414 | buf->fmt = cam->fmt; |
| 415 | buf->vb.width = cam->width; |
| 416 | buf->vb.height = cam->height; |
| 417 | buf->vb.field = field; |
| 418 | |
| 419 | if (buf->vb.state == VIDEOBUF_NEEDS_INIT) { |
| 420 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
| 421 | if (rc < 0) |
| 422 | goto fail; |
| 423 | } |
| 424 | |
| 425 | buf->vb.state = VIDEOBUF_PREPARED; |
| 426 | return 0; |
| 427 | fail: |
| 428 | free_buffer(vq, buf); |
| 429 | return rc; |
| 430 | } |
| 431 | |
| 432 | static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) |
| 433 | { |
| 434 | struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, |
| 435 | vb); |
| 436 | struct zr364xx_camera *cam = vq->priv_data; |
| 437 | |
| 438 | _DBG("%s\n", __func__); |
| 439 | |
| 440 | buf->vb.state = VIDEOBUF_QUEUED; |
| 441 | list_add_tail(&buf->vb.queue, &cam->vidq.active); |
| 442 | } |
| 443 | |
| 444 | static void buffer_release(struct videobuf_queue *vq, |
| 445 | struct videobuf_buffer *vb) |
| 446 | { |
| 447 | struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, |
| 448 | vb); |
| 449 | |
| 450 | _DBG("%s\n", __func__); |
| 451 | free_buffer(vq, buf); |
| 452 | } |
| 453 | |
| 454 | static struct videobuf_queue_ops zr364xx_video_qops = { |
| 455 | .buf_setup = buffer_setup, |
| 456 | .buf_prepare = buffer_prepare, |
| 457 | .buf_queue = buffer_queue, |
| 458 | .buf_release = buffer_release, |
| 459 | }; |
| 460 | |
| 461 | /********************/ |
| 462 | /* V4L2 integration */ |
| 463 | /********************/ |
| 464 | static int zr364xx_vidioc_streamon(struct file *file, void *priv, |
| 465 | enum v4l2_buf_type type); |
| 466 | |
| 467 | static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count, |
| 468 | loff_t * ppos) |
| 469 | { |
| 470 | struct zr364xx_camera *cam = video_drvdata(file); |
| 471 | |
| 472 | _DBG("%s\n", __func__); |
| 473 | |
| 474 | if (!buf) |
| 475 | return -EINVAL; |
| 476 | |
| 477 | if (!count) |
| 478 | return -EINVAL; |
| 479 | |
| 480 | if (cam->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 481 | zr364xx_vidioc_streamon(file, cam, cam->type) == 0) { |
| 482 | DBG("%s: reading %d bytes at pos %d.\n", __func__, (int) count, |
| 483 | (int) *ppos); |
| 484 | |
| 485 | /* NoMan Sux ! */ |
| 486 | return videobuf_read_one(&cam->vb_vidq, buf, count, ppos, |
| 487 | file->f_flags & O_NONBLOCK); |
| 488 | } |
| 489 | |
| 490 | return 0; |
| 491 | } |
| 492 | |
| 493 | /* video buffer vmalloc implementation based partly on VIVI driver which is |
| 494 | * Copyright (c) 2006 by |
| 495 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> |
| 496 | * Ted Walther <ted--a.t--enumera.com> |
| 497 | * John Sokol <sokol--a.t--videotechnology.com> |
| 498 | * http://v4l.videotechnology.com/ |
| 499 | * |
| 500 | */ |
| 501 | static void zr364xx_fillbuff(struct zr364xx_camera *cam, |
| 502 | struct zr364xx_buffer *buf, |
| 503 | int jpgsize) |
| 504 | { |
| 505 | int pos = 0; |
| 506 | struct timeval ts; |
| 507 | const char *tmpbuf; |
| 508 | char *vbuf = videobuf_to_vmalloc(&buf->vb); |
| 509 | unsigned long last_frame; |
| 510 | |
| 511 | if (!vbuf) |
| 512 | return; |
| 513 | |
| 514 | last_frame = cam->last_frame; |
| 515 | if (last_frame != -1) { |
| 516 | tmpbuf = (const char *)cam->buffer.frame[last_frame].lpvbits; |
| 517 | switch (buf->fmt->fourcc) { |
| 518 | case V4L2_PIX_FMT_JPEG: |
| 519 | buf->vb.size = jpgsize; |
| 520 | memcpy(vbuf, tmpbuf, buf->vb.size); |
| 521 | break; |
| 522 | default: |
| 523 | printk(KERN_DEBUG KBUILD_MODNAME ": unknown format?\n"); |
| 524 | } |
| 525 | cam->last_frame = -1; |
| 526 | } else { |
| 527 | printk(KERN_ERR KBUILD_MODNAME ": =======no frame\n"); |
| 528 | return; |
| 529 | } |
| 530 | DBG("%s: Buffer 0x%08lx size= %d\n", __func__, |
| 531 | (unsigned long)vbuf, pos); |
| 532 | /* tell v4l buffer was filled */ |
| 533 | |
| 534 | buf->vb.field_count = cam->frame_count * 2; |
| 535 | do_gettimeofday(&ts); |
| 536 | buf->vb.ts = ts; |
| 537 | buf->vb.state = VIDEOBUF_DONE; |
| 538 | } |
| 539 | |
| 540 | static int zr364xx_got_frame(struct zr364xx_camera *cam, int jpgsize) |
| 541 | { |
| 542 | struct zr364xx_dmaqueue *dma_q = &cam->vidq; |
| 543 | struct zr364xx_buffer *buf; |
| 544 | unsigned long flags = 0; |
| 545 | int rc = 0; |
| 546 | |
| 547 | DBG("wakeup: %p\n", &dma_q); |
| 548 | spin_lock_irqsave(&cam->slock, flags); |
| 549 | |
| 550 | if (list_empty(&dma_q->active)) { |
| 551 | DBG("No active queue to serve\n"); |
| 552 | rc = -1; |
| 553 | goto unlock; |
| 554 | } |
| 555 | buf = list_entry(dma_q->active.next, |
| 556 | struct zr364xx_buffer, vb.queue); |
| 557 | |
| 558 | if (!waitqueue_active(&buf->vb.done)) { |
| 559 | /* no one active */ |
| 560 | rc = -1; |
| 561 | goto unlock; |
| 562 | } |
| 563 | list_del(&buf->vb.queue); |
| 564 | do_gettimeofday(&buf->vb.ts); |
| 565 | DBG("[%p/%d] wakeup\n", buf, buf->vb.i); |
| 566 | zr364xx_fillbuff(cam, buf, jpgsize); |
| 567 | wake_up(&buf->vb.done); |
| 568 | DBG("wakeup [buf/i] [%p/%d]\n", buf, buf->vb.i); |
| 569 | unlock: |
| 570 | spin_unlock_irqrestore(&cam->slock, flags); |
| 571 | return rc; |
| 572 | } |
| 573 | |
| 574 | /* this function moves the usb stream read pipe data |
| 575 | * into the system buffers. |
| 576 | * returns 0 on success, EAGAIN if more data to process (call this |
| 577 | * function again). |
| 578 | */ |
| 579 | static int zr364xx_read_video_callback(struct zr364xx_camera *cam, |
| 580 | struct zr364xx_pipeinfo *pipe_info, |
| 581 | struct urb *purb) |
| 582 | { |
| 583 | unsigned char *pdest; |
| 584 | unsigned char *psrc; |
| 585 | s32 idx = -1; |
| 586 | struct zr364xx_framei *frm; |
| 587 | int i = 0; |
| 588 | unsigned char *ptr = NULL; |
| 589 | |
| 590 | _DBG("buffer to user\n"); |
| 591 | idx = cam->cur_frame; |
| 592 | frm = &cam->buffer.frame[idx]; |
| 593 | |
| 594 | /* swap bytes if camera needs it */ |
| 595 | if (cam->method == METHOD0) { |
| 596 | u16 *buf = (u16 *)pipe_info->transfer_buffer; |
| 597 | for (i = 0; i < purb->actual_length/2; i++) |
| 598 | swab16s(buf + i); |
| 599 | } |
| 600 | |
| 601 | /* search done. now find out if should be acquiring */ |
| 602 | if (!cam->b_acquire) { |
| 603 | /* we found a frame, but this channel is turned off */ |
| 604 | frm->ulState = ZR364XX_READ_IDLE; |
| 605 | return -EINVAL; |
| 606 | } |
| 607 | |
| 608 | psrc = (u8 *)pipe_info->transfer_buffer; |
| 609 | ptr = pdest = frm->lpvbits; |
| 610 | |
| 611 | if (frm->ulState == ZR364XX_READ_IDLE) { |
| 612 | frm->ulState = ZR364XX_READ_FRAME; |
| 613 | frm->cur_size = 0; |
| 614 | |
| 615 | _DBG("jpeg header, "); |
| 616 | memcpy(ptr, header1, sizeof(header1)); |
| 617 | ptr += sizeof(header1); |
| 618 | header3 = 0; |
| 619 | memcpy(ptr, &header3, 1); |
| 620 | ptr++; |
| 621 | memcpy(ptr, psrc, 64); |
| 622 | ptr += 64; |
| 623 | header3 = 1; |
| 624 | memcpy(ptr, &header3, 1); |
| 625 | ptr++; |
| 626 | memcpy(ptr, psrc + 64, 64); |
| 627 | ptr += 64; |
| 628 | memcpy(ptr, header2, sizeof(header2)); |
| 629 | ptr += sizeof(header2); |
| 630 | memcpy(ptr, psrc + 128, |
| 631 | purb->actual_length - 128); |
| 632 | ptr += purb->actual_length - 128; |
| 633 | _DBG("header : %d %d %d %d %d %d %d %d %d\n", |
| 634 | psrc[0], psrc[1], psrc[2], |
| 635 | psrc[3], psrc[4], psrc[5], |
| 636 | psrc[6], psrc[7], psrc[8]); |
| 637 | frm->cur_size = ptr - pdest; |
| 638 | } else { |
| 639 | if (frm->cur_size + purb->actual_length > MAX_FRAME_SIZE) { |
| 640 | dev_info(&cam->udev->dev, |
| 641 | "%s: buffer (%d bytes) too small to hold " |
| 642 | "frame data. Discarding frame data.\n", |
| 643 | __func__, MAX_FRAME_SIZE); |
| 644 | } else { |
| 645 | pdest += frm->cur_size; |
| 646 | memcpy(pdest, psrc, purb->actual_length); |
| 647 | frm->cur_size += purb->actual_length; |
| 648 | } |
| 649 | } |
| 650 | /*_DBG("cur_size %lu urb size %d\n", frm->cur_size, |
| 651 | purb->actual_length);*/ |
| 652 | |
| 653 | if (purb->actual_length < pipe_info->transfer_size) { |
| 654 | _DBG("****************Buffer[%d]full*************\n", idx); |
| 655 | cam->last_frame = cam->cur_frame; |
| 656 | cam->cur_frame++; |
| 657 | /* end of system frame ring buffer, start at zero */ |
| 658 | if (cam->cur_frame == cam->buffer.dwFrames) |
| 659 | cam->cur_frame = 0; |
| 660 | |
| 661 | /* frame ready */ |
| 662 | /* go back to find the JPEG EOI marker */ |
| 663 | ptr = pdest = frm->lpvbits; |
| 664 | ptr += frm->cur_size - 2; |
| 665 | while (ptr > pdest) { |
| 666 | if (*ptr == 0xFF && *(ptr + 1) == 0xD9 |
| 667 | && *(ptr + 2) == 0xFF) |
| 668 | break; |
| 669 | ptr--; |
| 670 | } |
| 671 | if (ptr == pdest) |
| 672 | DBG("No EOI marker\n"); |
| 673 | |
| 674 | /* Sometimes there is junk data in the middle of the picture, |
| 675 | * we want to skip this bogus frames */ |
| 676 | while (ptr > pdest) { |
| 677 | if (*ptr == 0xFF && *(ptr + 1) == 0xFF |
| 678 | && *(ptr + 2) == 0xFF) |
| 679 | break; |
| 680 | ptr--; |
| 681 | } |
| 682 | if (ptr != pdest) { |
| 683 | DBG("Bogus frame ? %d\n", ++(cam->nb)); |
| 684 | } else if (cam->b_acquire) { |
| 685 | /* we skip the 2 first frames which are usually buggy */ |
| 686 | if (cam->skip) |
| 687 | cam->skip--; |
| 688 | else { |
| 689 | _DBG("jpeg(%lu): %d %d %d %d %d %d %d %d\n", |
| 690 | frm->cur_size, |
| 691 | pdest[0], pdest[1], pdest[2], pdest[3], |
| 692 | pdest[4], pdest[5], pdest[6], pdest[7]); |
| 693 | |
| 694 | zr364xx_got_frame(cam, frm->cur_size); |
| 695 | } |
| 696 | } |
| 697 | cam->frame_count++; |
| 698 | frm->ulState = ZR364XX_READ_IDLE; |
| 699 | frm->cur_size = 0; |
| 700 | } |
| 701 | /* done successfully */ |
| 702 | return 0; |
| 703 | } |
| 704 | |
| 705 | static int res_get(struct zr364xx_camera *cam) |
| 706 | { |
| 707 | /* is it free? */ |
| 708 | mutex_lock(&cam->lock); |
| 709 | if (cam->resources) { |
| 710 | /* no, someone else uses it */ |
| 711 | mutex_unlock(&cam->lock); |
| 712 | return 0; |
| 713 | } |
| 714 | /* it's free, grab it */ |
| 715 | cam->resources = 1; |
| 716 | _DBG("res: get\n"); |
| 717 | mutex_unlock(&cam->lock); |
| 718 | return 1; |
| 719 | } |
| 720 | |
| 721 | static inline int res_check(struct zr364xx_camera *cam) |
| 722 | { |
| 723 | return cam->resources; |
| 724 | } |
| 725 | |
| 726 | static void res_free(struct zr364xx_camera *cam) |
| 727 | { |
| 728 | mutex_lock(&cam->lock); |
| 729 | cam->resources = 0; |
| 730 | mutex_unlock(&cam->lock); |
| 731 | _DBG("res: put\n"); |
| 732 | } |
| 733 | |
| 734 | static int zr364xx_vidioc_querycap(struct file *file, void *priv, |
| 735 | struct v4l2_capability *cap) |
| 736 | { |
| 737 | struct zr364xx_camera *cam = video_drvdata(file); |
| 738 | |
| 739 | strlcpy(cap->driver, DRIVER_DESC, sizeof(cap->driver)); |
| 740 | strlcpy(cap->card, cam->udev->product, sizeof(cap->card)); |
| 741 | strlcpy(cap->bus_info, dev_name(&cam->udev->dev), |
| 742 | sizeof(cap->bus_info)); |
| 743 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
| 744 | V4L2_CAP_READWRITE | |
| 745 | V4L2_CAP_STREAMING; |
| 746 | |
| 747 | return 0; |
| 748 | } |
| 749 | |
| 750 | static int zr364xx_vidioc_enum_input(struct file *file, void *priv, |
| 751 | struct v4l2_input *i) |
| 752 | { |
| 753 | if (i->index != 0) |
| 754 | return -EINVAL; |
| 755 | strcpy(i->name, DRIVER_DESC " Camera"); |
| 756 | i->type = V4L2_INPUT_TYPE_CAMERA; |
| 757 | return 0; |
| 758 | } |
| 759 | |
| 760 | static int zr364xx_vidioc_g_input(struct file *file, void *priv, |
| 761 | unsigned int *i) |
| 762 | { |
| 763 | *i = 0; |
| 764 | return 0; |
| 765 | } |
| 766 | |
| 767 | static int zr364xx_vidioc_s_input(struct file *file, void *priv, |
| 768 | unsigned int i) |
| 769 | { |
| 770 | if (i != 0) |
| 771 | return -EINVAL; |
| 772 | return 0; |
| 773 | } |
| 774 | |
| 775 | static int zr364xx_vidioc_queryctrl(struct file *file, void *priv, |
| 776 | struct v4l2_queryctrl *c) |
| 777 | { |
| 778 | struct zr364xx_camera *cam; |
| 779 | |
| 780 | if (file == NULL) |
| 781 | return -ENODEV; |
| 782 | cam = video_drvdata(file); |
| 783 | |
| 784 | switch (c->id) { |
| 785 | case V4L2_CID_BRIGHTNESS: |
| 786 | c->type = V4L2_CTRL_TYPE_INTEGER; |
| 787 | strcpy(c->name, "Brightness"); |
| 788 | c->minimum = 0; |
| 789 | c->maximum = 127; |
| 790 | c->step = 1; |
| 791 | c->default_value = cam->mode.brightness; |
| 792 | c->flags = 0; |
| 793 | break; |
| 794 | default: |
| 795 | return -EINVAL; |
| 796 | } |
| 797 | return 0; |
| 798 | } |
| 799 | |
| 800 | static int zr364xx_vidioc_s_ctrl(struct file *file, void *priv, |
| 801 | struct v4l2_control *c) |
| 802 | { |
| 803 | struct zr364xx_camera *cam; |
| 804 | int temp; |
| 805 | |
| 806 | if (file == NULL) |
| 807 | return -ENODEV; |
| 808 | cam = video_drvdata(file); |
| 809 | |
| 810 | switch (c->id) { |
| 811 | case V4L2_CID_BRIGHTNESS: |
| 812 | cam->mode.brightness = c->value; |
| 813 | /* hardware brightness */ |
| 814 | mutex_lock(&cam->lock); |
| 815 | send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0); |
| 816 | temp = (0x60 << 8) + 127 - cam->mode.brightness; |
| 817 | send_control_msg(cam->udev, 1, temp, 0, NULL, 0); |
| 818 | mutex_unlock(&cam->lock); |
| 819 | break; |
| 820 | default: |
| 821 | return -EINVAL; |
| 822 | } |
| 823 | |
| 824 | return 0; |
| 825 | } |
| 826 | |
| 827 | static int zr364xx_vidioc_g_ctrl(struct file *file, void *priv, |
| 828 | struct v4l2_control *c) |
| 829 | { |
| 830 | struct zr364xx_camera *cam; |
| 831 | |
| 832 | if (file == NULL) |
| 833 | return -ENODEV; |
| 834 | cam = video_drvdata(file); |
| 835 | |
| 836 | switch (c->id) { |
| 837 | case V4L2_CID_BRIGHTNESS: |
| 838 | c->value = cam->mode.brightness; |
| 839 | break; |
| 840 | default: |
| 841 | return -EINVAL; |
| 842 | } |
| 843 | return 0; |
| 844 | } |
| 845 | |
| 846 | static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file, |
| 847 | void *priv, struct v4l2_fmtdesc *f) |
| 848 | { |
| 849 | if (f->index > 0) |
| 850 | return -EINVAL; |
| 851 | f->flags = V4L2_FMT_FLAG_COMPRESSED; |
| 852 | strcpy(f->description, formats[0].name); |
| 853 | f->pixelformat = formats[0].fourcc; |
| 854 | return 0; |
| 855 | } |
| 856 | |
| 857 | static char *decode_fourcc(__u32 pixelformat, char *buf) |
| 858 | { |
| 859 | buf[0] = pixelformat & 0xff; |
| 860 | buf[1] = (pixelformat >> 8) & 0xff; |
| 861 | buf[2] = (pixelformat >> 16) & 0xff; |
| 862 | buf[3] = (pixelformat >> 24) & 0xff; |
| 863 | buf[4] = '\0'; |
| 864 | return buf; |
| 865 | } |
| 866 | |
| 867 | static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
| 868 | struct v4l2_format *f) |
| 869 | { |
| 870 | struct zr364xx_camera *cam = video_drvdata(file); |
| 871 | char pixelformat_name[5]; |
| 872 | |
| 873 | if (cam == NULL) |
| 874 | return -ENODEV; |
| 875 | |
| 876 | if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) { |
| 877 | DBG("%s: unsupported pixelformat V4L2_PIX_FMT_%s\n", __func__, |
| 878 | decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name)); |
| 879 | return -EINVAL; |
| 880 | } |
| 881 | |
| 882 | if (!(f->fmt.pix.width == 160 && f->fmt.pix.height == 120) && |
| 883 | !(f->fmt.pix.width == 640 && f->fmt.pix.height == 480)) { |
| 884 | f->fmt.pix.width = 320; |
| 885 | f->fmt.pix.height = 240; |
| 886 | } |
| 887 | |
| 888 | f->fmt.pix.field = V4L2_FIELD_NONE; |
| 889 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
| 890 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
| 891 | f->fmt.pix.colorspace = 0; |
| 892 | f->fmt.pix.priv = 0; |
| 893 | DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, |
| 894 | decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), |
| 895 | f->fmt.pix.field); |
| 896 | return 0; |
| 897 | } |
| 898 | |
| 899 | static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
| 900 | struct v4l2_format *f) |
| 901 | { |
| 902 | struct zr364xx_camera *cam; |
| 903 | |
| 904 | if (file == NULL) |
| 905 | return -ENODEV; |
| 906 | cam = video_drvdata(file); |
| 907 | |
| 908 | f->fmt.pix.pixelformat = formats[0].fourcc; |
| 909 | f->fmt.pix.field = V4L2_FIELD_NONE; |
| 910 | f->fmt.pix.width = cam->width; |
| 911 | f->fmt.pix.height = cam->height; |
| 912 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
| 913 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
| 914 | f->fmt.pix.colorspace = 0; |
| 915 | f->fmt.pix.priv = 0; |
| 916 | return 0; |
| 917 | } |
| 918 | |
| 919 | static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
| 920 | struct v4l2_format *f) |
| 921 | { |
| 922 | struct zr364xx_camera *cam = video_drvdata(file); |
| 923 | struct videobuf_queue *q = &cam->vb_vidq; |
| 924 | char pixelformat_name[5]; |
| 925 | int ret = zr364xx_vidioc_try_fmt_vid_cap(file, cam, f); |
| 926 | int i; |
| 927 | |
| 928 | if (ret < 0) |
| 929 | return ret; |
| 930 | |
| 931 | mutex_lock(&q->vb_lock); |
| 932 | |
| 933 | if (videobuf_queue_is_busy(&cam->vb_vidq)) { |
| 934 | DBG("%s queue busy\n", __func__); |
| 935 | ret = -EBUSY; |
| 936 | goto out; |
| 937 | } |
| 938 | |
| 939 | if (res_check(cam)) { |
| 940 | DBG("%s can't change format after started\n", __func__); |
| 941 | ret = -EBUSY; |
| 942 | goto out; |
| 943 | } |
| 944 | |
| 945 | cam->width = f->fmt.pix.width; |
| 946 | cam->height = f->fmt.pix.height; |
| 947 | dev_info(&cam->udev->dev, "%s: %dx%d mode selected\n", __func__, |
| 948 | cam->width, cam->height); |
| 949 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
| 950 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
| 951 | f->fmt.pix.colorspace = 0; |
| 952 | f->fmt.pix.priv = 0; |
| 953 | cam->vb_vidq.field = f->fmt.pix.field; |
| 954 | cam->mode.color = V4L2_PIX_FMT_JPEG; |
| 955 | |
| 956 | if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120) |
| 957 | mode = 1; |
| 958 | else if (f->fmt.pix.width == 640 && f->fmt.pix.height == 480) |
| 959 | mode = 2; |
| 960 | else |
| 961 | mode = 0; |
| 962 | |
| 963 | m0d1[0] = mode; |
| 964 | m1[2].value = 0xf000 + mode; |
| 965 | m2[1].value = 0xf000 + mode; |
| 966 | |
| 967 | /* special case for METHOD3, the modes are different */ |
| 968 | if (cam->method == METHOD3) { |
| 969 | switch (mode) { |
| 970 | case 1: |
| 971 | m2[1].value = 0xf000 + 4; |
| 972 | break; |
| 973 | case 2: |
| 974 | m2[1].value = 0xf000 + 0; |
| 975 | break; |
| 976 | default: |
| 977 | m2[1].value = 0xf000 + 1; |
| 978 | break; |
| 979 | } |
| 980 | } |
| 981 | |
| 982 | header2[437] = cam->height / 256; |
| 983 | header2[438] = cam->height % 256; |
| 984 | header2[439] = cam->width / 256; |
| 985 | header2[440] = cam->width % 256; |
| 986 | |
| 987 | for (i = 0; init[cam->method][i].size != -1; i++) { |
| 988 | ret = |
| 989 | send_control_msg(cam->udev, 1, init[cam->method][i].value, |
| 990 | 0, init[cam->method][i].bytes, |
| 991 | init[cam->method][i].size); |
| 992 | if (ret < 0) { |
| 993 | dev_err(&cam->udev->dev, |
| 994 | "error during resolution change sequence: %d\n", i); |
| 995 | goto out; |
| 996 | } |
| 997 | } |
| 998 | |
| 999 | /* Added some delay here, since opening/closing the camera quickly, |
| 1000 | * like Ekiga does during its startup, can crash the webcam |
| 1001 | */ |
| 1002 | mdelay(100); |
| 1003 | cam->skip = 2; |
| 1004 | ret = 0; |
| 1005 | |
| 1006 | out: |
| 1007 | mutex_unlock(&q->vb_lock); |
| 1008 | |
| 1009 | DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, |
| 1010 | decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), |
| 1011 | f->fmt.pix.field); |
| 1012 | return ret; |
| 1013 | } |
| 1014 | |
| 1015 | static int zr364xx_vidioc_reqbufs(struct file *file, void *priv, |
| 1016 | struct v4l2_requestbuffers *p) |
| 1017 | { |
| 1018 | int rc; |
| 1019 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1020 | rc = videobuf_reqbufs(&cam->vb_vidq, p); |
| 1021 | return rc; |
| 1022 | } |
| 1023 | |
| 1024 | static int zr364xx_vidioc_querybuf(struct file *file, |
| 1025 | void *priv, |
| 1026 | struct v4l2_buffer *p) |
| 1027 | { |
| 1028 | int rc; |
| 1029 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1030 | rc = videobuf_querybuf(&cam->vb_vidq, p); |
| 1031 | return rc; |
| 1032 | } |
| 1033 | |
| 1034 | static int zr364xx_vidioc_qbuf(struct file *file, |
| 1035 | void *priv, |
| 1036 | struct v4l2_buffer *p) |
| 1037 | { |
| 1038 | int rc; |
| 1039 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1040 | _DBG("%s\n", __func__); |
| 1041 | rc = videobuf_qbuf(&cam->vb_vidq, p); |
| 1042 | return rc; |
| 1043 | } |
| 1044 | |
| 1045 | static int zr364xx_vidioc_dqbuf(struct file *file, |
| 1046 | void *priv, |
| 1047 | struct v4l2_buffer *p) |
| 1048 | { |
| 1049 | int rc; |
| 1050 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1051 | _DBG("%s\n", __func__); |
| 1052 | rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK); |
| 1053 | return rc; |
| 1054 | } |
| 1055 | |
| 1056 | static void read_pipe_completion(struct urb *purb) |
| 1057 | { |
| 1058 | struct zr364xx_pipeinfo *pipe_info; |
| 1059 | struct zr364xx_camera *cam; |
| 1060 | int pipe; |
| 1061 | |
| 1062 | pipe_info = purb->context; |
| 1063 | _DBG("%s %p, status %d\n", __func__, purb, purb->status); |
| 1064 | if (pipe_info == NULL) { |
| 1065 | printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); |
| 1066 | return; |
| 1067 | } |
| 1068 | |
| 1069 | cam = pipe_info->cam; |
| 1070 | if (cam == NULL) { |
| 1071 | printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); |
| 1072 | return; |
| 1073 | } |
| 1074 | |
| 1075 | /* if shutting down, do not resubmit, exit immediately */ |
| 1076 | if (purb->status == -ESHUTDOWN) { |
| 1077 | DBG("%s, err shutdown\n", __func__); |
| 1078 | pipe_info->err_count++; |
| 1079 | return; |
| 1080 | } |
| 1081 | |
| 1082 | if (pipe_info->state == 0) { |
| 1083 | DBG("exiting USB pipe\n"); |
| 1084 | return; |
| 1085 | } |
| 1086 | |
| 1087 | if (purb->actual_length < 0 || |
| 1088 | purb->actual_length > pipe_info->transfer_size) { |
| 1089 | dev_err(&cam->udev->dev, "wrong number of bytes\n"); |
| 1090 | return; |
| 1091 | } |
| 1092 | |
| 1093 | if (purb->status == 0) |
| 1094 | zr364xx_read_video_callback(cam, pipe_info, purb); |
| 1095 | else { |
| 1096 | pipe_info->err_count++; |
| 1097 | DBG("%s: failed URB %d\n", __func__, purb->status); |
| 1098 | } |
| 1099 | |
| 1100 | pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); |
| 1101 | |
| 1102 | /* reuse urb */ |
| 1103 | usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, |
| 1104 | pipe, |
| 1105 | pipe_info->transfer_buffer, |
| 1106 | pipe_info->transfer_size, |
| 1107 | read_pipe_completion, pipe_info); |
| 1108 | |
| 1109 | if (pipe_info->state != 0) { |
| 1110 | purb->status = usb_submit_urb(pipe_info->stream_urb, |
| 1111 | GFP_ATOMIC); |
| 1112 | |
| 1113 | if (purb->status) |
| 1114 | dev_err(&cam->udev->dev, |
| 1115 | "error submitting urb (error=%i)\n", |
| 1116 | purb->status); |
| 1117 | } else |
| 1118 | DBG("read pipe complete state 0\n"); |
| 1119 | } |
| 1120 | |
| 1121 | static int zr364xx_start_readpipe(struct zr364xx_camera *cam) |
| 1122 | { |
| 1123 | int pipe; |
| 1124 | int retval; |
| 1125 | struct zr364xx_pipeinfo *pipe_info = cam->pipe; |
| 1126 | pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); |
| 1127 | DBG("%s: start pipe IN x%x\n", __func__, cam->read_endpoint); |
| 1128 | |
| 1129 | pipe_info->state = 1; |
| 1130 | pipe_info->err_count = 0; |
| 1131 | pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1132 | if (!pipe_info->stream_urb) { |
| 1133 | dev_err(&cam->udev->dev, "ReadStream: Unable to alloc URB\n"); |
| 1134 | return -ENOMEM; |
| 1135 | } |
| 1136 | /* transfer buffer allocated in board_init */ |
| 1137 | usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, |
| 1138 | pipe, |
| 1139 | pipe_info->transfer_buffer, |
| 1140 | pipe_info->transfer_size, |
| 1141 | read_pipe_completion, pipe_info); |
| 1142 | |
| 1143 | DBG("submitting URB %p\n", pipe_info->stream_urb); |
| 1144 | retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL); |
| 1145 | if (retval) { |
| 1146 | printk(KERN_ERR KBUILD_MODNAME ": start read pipe failed\n"); |
| 1147 | return retval; |
| 1148 | } |
| 1149 | |
| 1150 | return 0; |
| 1151 | } |
| 1152 | |
| 1153 | static void zr364xx_stop_readpipe(struct zr364xx_camera *cam) |
| 1154 | { |
| 1155 | struct zr364xx_pipeinfo *pipe_info; |
| 1156 | |
| 1157 | if (cam == NULL) { |
| 1158 | printk(KERN_ERR KBUILD_MODNAME ": invalid device\n"); |
| 1159 | return; |
| 1160 | } |
| 1161 | DBG("stop read pipe\n"); |
| 1162 | pipe_info = cam->pipe; |
| 1163 | if (pipe_info) { |
| 1164 | if (pipe_info->state != 0) |
| 1165 | pipe_info->state = 0; |
| 1166 | |
| 1167 | if (pipe_info->stream_urb) { |
| 1168 | /* cancel urb */ |
| 1169 | usb_kill_urb(pipe_info->stream_urb); |
| 1170 | usb_free_urb(pipe_info->stream_urb); |
| 1171 | pipe_info->stream_urb = NULL; |
| 1172 | } |
| 1173 | } |
| 1174 | return; |
| 1175 | } |
| 1176 | |
| 1177 | /* starts acquisition process */ |
| 1178 | static int zr364xx_start_acquire(struct zr364xx_camera *cam) |
| 1179 | { |
| 1180 | int j; |
| 1181 | |
| 1182 | DBG("start acquire\n"); |
| 1183 | |
| 1184 | cam->last_frame = -1; |
| 1185 | cam->cur_frame = 0; |
| 1186 | for (j = 0; j < FRAMES; j++) { |
| 1187 | cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; |
| 1188 | cam->buffer.frame[j].cur_size = 0; |
| 1189 | } |
| 1190 | cam->b_acquire = 1; |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
| 1194 | static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam) |
| 1195 | { |
| 1196 | cam->b_acquire = 0; |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | static int zr364xx_vidioc_streamon(struct file *file, void *priv, |
| 1201 | enum v4l2_buf_type type) |
| 1202 | { |
| 1203 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1204 | int j; |
| 1205 | int res; |
| 1206 | |
| 1207 | DBG("%s\n", __func__); |
| 1208 | |
| 1209 | if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 1210 | dev_err(&cam->udev->dev, "invalid fh type0\n"); |
| 1211 | return -EINVAL; |
| 1212 | } |
| 1213 | if (cam->type != type) { |
| 1214 | dev_err(&cam->udev->dev, "invalid fh type1\n"); |
| 1215 | return -EINVAL; |
| 1216 | } |
| 1217 | |
| 1218 | if (!res_get(cam)) { |
| 1219 | dev_err(&cam->udev->dev, "stream busy\n"); |
| 1220 | return -EBUSY; |
| 1221 | } |
| 1222 | |
| 1223 | cam->last_frame = -1; |
| 1224 | cam->cur_frame = 0; |
| 1225 | cam->frame_count = 0; |
| 1226 | for (j = 0; j < FRAMES; j++) { |
| 1227 | cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; |
| 1228 | cam->buffer.frame[j].cur_size = 0; |
| 1229 | } |
| 1230 | res = videobuf_streamon(&cam->vb_vidq); |
| 1231 | if (res == 0) { |
| 1232 | zr364xx_start_acquire(cam); |
| 1233 | } else { |
| 1234 | res_free(cam); |
| 1235 | } |
| 1236 | return res; |
| 1237 | } |
| 1238 | |
| 1239 | static int zr364xx_vidioc_streamoff(struct file *file, void *priv, |
| 1240 | enum v4l2_buf_type type) |
| 1241 | { |
| 1242 | int res; |
| 1243 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1244 | |
| 1245 | DBG("%s\n", __func__); |
| 1246 | if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 1247 | dev_err(&cam->udev->dev, "invalid fh type0\n"); |
| 1248 | return -EINVAL; |
| 1249 | } |
| 1250 | if (cam->type != type) { |
| 1251 | dev_err(&cam->udev->dev, "invalid fh type1\n"); |
| 1252 | return -EINVAL; |
| 1253 | } |
| 1254 | zr364xx_stop_acquire(cam); |
| 1255 | res = videobuf_streamoff(&cam->vb_vidq); |
| 1256 | if (res < 0) |
| 1257 | return res; |
| 1258 | res_free(cam); |
| 1259 | return 0; |
| 1260 | } |
| 1261 | |
| 1262 | |
| 1263 | /* open the camera */ |
| 1264 | static int zr364xx_open(struct file *file) |
| 1265 | { |
| 1266 | struct video_device *vdev = video_devdata(file); |
| 1267 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1268 | struct usb_device *udev = cam->udev; |
| 1269 | int i, err; |
| 1270 | |
| 1271 | DBG("%s\n", __func__); |
| 1272 | |
| 1273 | mutex_lock(&cam->open_lock); |
| 1274 | |
| 1275 | if (cam->users) { |
| 1276 | err = -EBUSY; |
| 1277 | goto out; |
| 1278 | } |
| 1279 | |
| 1280 | for (i = 0; init[cam->method][i].size != -1; i++) { |
| 1281 | err = |
| 1282 | send_control_msg(udev, 1, init[cam->method][i].value, |
| 1283 | 0, init[cam->method][i].bytes, |
| 1284 | init[cam->method][i].size); |
| 1285 | if (err < 0) { |
| 1286 | dev_err(&cam->udev->dev, |
| 1287 | "error during open sequence: %d\n", i); |
| 1288 | goto out; |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | cam->skip = 2; |
| 1293 | cam->users++; |
| 1294 | file->private_data = vdev; |
| 1295 | cam->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1296 | cam->fmt = formats; |
| 1297 | |
| 1298 | videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops, |
| 1299 | NULL, &cam->slock, |
| 1300 | cam->type, |
| 1301 | V4L2_FIELD_NONE, |
| 1302 | sizeof(struct zr364xx_buffer), cam, NULL); |
| 1303 | |
| 1304 | /* Added some delay here, since opening/closing the camera quickly, |
| 1305 | * like Ekiga does during its startup, can crash the webcam |
| 1306 | */ |
| 1307 | mdelay(100); |
| 1308 | err = 0; |
| 1309 | |
| 1310 | out: |
| 1311 | mutex_unlock(&cam->open_lock); |
| 1312 | DBG("%s: %d\n", __func__, err); |
| 1313 | return err; |
| 1314 | } |
| 1315 | |
| 1316 | static void zr364xx_destroy(struct zr364xx_camera *cam) |
| 1317 | { |
| 1318 | unsigned long i; |
| 1319 | |
| 1320 | if (!cam) { |
| 1321 | printk(KERN_ERR KBUILD_MODNAME ", %s: no device\n", __func__); |
| 1322 | return; |
| 1323 | } |
| 1324 | mutex_lock(&cam->open_lock); |
| 1325 | if (cam->vdev) |
| 1326 | video_unregister_device(cam->vdev); |
| 1327 | cam->vdev = NULL; |
| 1328 | |
| 1329 | /* stops the read pipe if it is running */ |
| 1330 | if (cam->b_acquire) |
| 1331 | zr364xx_stop_acquire(cam); |
| 1332 | |
| 1333 | zr364xx_stop_readpipe(cam); |
| 1334 | |
| 1335 | /* release sys buffers */ |
| 1336 | for (i = 0; i < FRAMES; i++) { |
| 1337 | if (cam->buffer.frame[i].lpvbits) { |
| 1338 | DBG("vfree %p\n", cam->buffer.frame[i].lpvbits); |
| 1339 | vfree(cam->buffer.frame[i].lpvbits); |
| 1340 | } |
| 1341 | cam->buffer.frame[i].lpvbits = NULL; |
| 1342 | } |
| 1343 | |
| 1344 | /* release transfer buffer */ |
| 1345 | kfree(cam->pipe->transfer_buffer); |
| 1346 | cam->pipe->transfer_buffer = NULL; |
| 1347 | mutex_unlock(&cam->open_lock); |
| 1348 | kfree(cam); |
| 1349 | cam = NULL; |
| 1350 | } |
| 1351 | |
| 1352 | /* release the camera */ |
| 1353 | static int zr364xx_release(struct file *file) |
| 1354 | { |
| 1355 | struct zr364xx_camera *cam; |
| 1356 | struct usb_device *udev; |
| 1357 | int i, err; |
| 1358 | |
| 1359 | DBG("%s\n", __func__); |
| 1360 | cam = video_drvdata(file); |
| 1361 | |
| 1362 | if (!cam) |
| 1363 | return -ENODEV; |
| 1364 | |
| 1365 | mutex_lock(&cam->open_lock); |
| 1366 | udev = cam->udev; |
| 1367 | |
| 1368 | /* turn off stream */ |
| 1369 | if (res_check(cam)) { |
| 1370 | if (cam->b_acquire) |
| 1371 | zr364xx_stop_acquire(cam); |
| 1372 | videobuf_streamoff(&cam->vb_vidq); |
| 1373 | res_free(cam); |
| 1374 | } |
| 1375 | |
| 1376 | cam->users--; |
| 1377 | file->private_data = NULL; |
| 1378 | |
| 1379 | for (i = 0; i < 2; i++) { |
| 1380 | err = |
| 1381 | send_control_msg(udev, 1, init[cam->method][i].value, |
| 1382 | 0, init[cam->method][i].bytes, |
| 1383 | init[cam->method][i].size); |
| 1384 | if (err < 0) { |
| 1385 | dev_err(&udev->dev, "error during release sequence\n"); |
| 1386 | goto out; |
| 1387 | } |
| 1388 | } |
| 1389 | |
| 1390 | /* Added some delay here, since opening/closing the camera quickly, |
| 1391 | * like Ekiga does during its startup, can crash the webcam |
| 1392 | */ |
| 1393 | mdelay(100); |
| 1394 | err = 0; |
| 1395 | |
| 1396 | out: |
| 1397 | mutex_unlock(&cam->open_lock); |
| 1398 | |
| 1399 | return err; |
| 1400 | } |
| 1401 | |
| 1402 | |
| 1403 | static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma) |
| 1404 | { |
| 1405 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1406 | int ret; |
| 1407 | |
| 1408 | if (cam == NULL) { |
| 1409 | DBG("%s: cam == NULL\n", __func__); |
| 1410 | return -ENODEV; |
| 1411 | } |
| 1412 | DBG("mmap called, vma=0x%08lx\n", (unsigned long)vma); |
| 1413 | |
| 1414 | ret = videobuf_mmap_mapper(&cam->vb_vidq, vma); |
| 1415 | |
| 1416 | DBG("vma start=0x%08lx, size=%ld, ret=%d\n", |
| 1417 | (unsigned long)vma->vm_start, |
| 1418 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret); |
| 1419 | return ret; |
| 1420 | } |
| 1421 | |
| 1422 | static unsigned int zr364xx_poll(struct file *file, |
| 1423 | struct poll_table_struct *wait) |
| 1424 | { |
| 1425 | struct zr364xx_camera *cam = video_drvdata(file); |
| 1426 | struct videobuf_queue *q = &cam->vb_vidq; |
| 1427 | _DBG("%s\n", __func__); |
| 1428 | |
| 1429 | if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1430 | return POLLERR; |
| 1431 | |
| 1432 | return videobuf_poll_stream(file, q, wait); |
| 1433 | } |
| 1434 | |
| 1435 | static const struct v4l2_file_operations zr364xx_fops = { |
| 1436 | .owner = THIS_MODULE, |
| 1437 | .open = zr364xx_open, |
| 1438 | .release = zr364xx_release, |
| 1439 | .read = zr364xx_read, |
| 1440 | .mmap = zr364xx_mmap, |
| 1441 | .ioctl = video_ioctl2, |
| 1442 | .poll = zr364xx_poll, |
| 1443 | }; |
| 1444 | |
| 1445 | static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = { |
| 1446 | .vidioc_querycap = zr364xx_vidioc_querycap, |
| 1447 | .vidioc_enum_fmt_vid_cap = zr364xx_vidioc_enum_fmt_vid_cap, |
| 1448 | .vidioc_try_fmt_vid_cap = zr364xx_vidioc_try_fmt_vid_cap, |
| 1449 | .vidioc_s_fmt_vid_cap = zr364xx_vidioc_s_fmt_vid_cap, |
| 1450 | .vidioc_g_fmt_vid_cap = zr364xx_vidioc_g_fmt_vid_cap, |
| 1451 | .vidioc_enum_input = zr364xx_vidioc_enum_input, |
| 1452 | .vidioc_g_input = zr364xx_vidioc_g_input, |
| 1453 | .vidioc_s_input = zr364xx_vidioc_s_input, |
| 1454 | .vidioc_streamon = zr364xx_vidioc_streamon, |
| 1455 | .vidioc_streamoff = zr364xx_vidioc_streamoff, |
| 1456 | .vidioc_queryctrl = zr364xx_vidioc_queryctrl, |
| 1457 | .vidioc_g_ctrl = zr364xx_vidioc_g_ctrl, |
| 1458 | .vidioc_s_ctrl = zr364xx_vidioc_s_ctrl, |
| 1459 | .vidioc_reqbufs = zr364xx_vidioc_reqbufs, |
| 1460 | .vidioc_querybuf = zr364xx_vidioc_querybuf, |
| 1461 | .vidioc_qbuf = zr364xx_vidioc_qbuf, |
| 1462 | .vidioc_dqbuf = zr364xx_vidioc_dqbuf, |
| 1463 | }; |
| 1464 | |
| 1465 | static struct video_device zr364xx_template = { |
| 1466 | .name = DRIVER_DESC, |
| 1467 | .fops = &zr364xx_fops, |
| 1468 | .ioctl_ops = &zr364xx_ioctl_ops, |
| 1469 | .release = video_device_release, |
| 1470 | }; |
| 1471 | |
| 1472 | |
| 1473 | |
| 1474 | /*******************/ |
| 1475 | /* USB integration */ |
| 1476 | /*******************/ |
| 1477 | static int zr364xx_board_init(struct zr364xx_camera *cam) |
| 1478 | { |
| 1479 | struct zr364xx_pipeinfo *pipe = cam->pipe; |
| 1480 | unsigned long i; |
| 1481 | |
| 1482 | DBG("board init: %p\n", cam); |
| 1483 | memset(pipe, 0, sizeof(*pipe)); |
| 1484 | pipe->cam = cam; |
| 1485 | pipe->transfer_size = BUFFER_SIZE; |
| 1486 | |
| 1487 | pipe->transfer_buffer = kzalloc(pipe->transfer_size, |
| 1488 | GFP_KERNEL); |
| 1489 | if (pipe->transfer_buffer == NULL) { |
| 1490 | DBG("out of memory!\n"); |
| 1491 | return -ENOMEM; |
| 1492 | } |
| 1493 | |
| 1494 | cam->b_acquire = 0; |
| 1495 | cam->frame_count = 0; |
| 1496 | |
| 1497 | /*** start create system buffers ***/ |
| 1498 | for (i = 0; i < FRAMES; i++) { |
| 1499 | /* always allocate maximum size for system buffers */ |
| 1500 | cam->buffer.frame[i].lpvbits = vmalloc(MAX_FRAME_SIZE); |
| 1501 | |
| 1502 | DBG("valloc %p, idx %lu, pdata %p\n", |
| 1503 | &cam->buffer.frame[i], i, |
| 1504 | cam->buffer.frame[i].lpvbits); |
| 1505 | if (cam->buffer.frame[i].lpvbits == NULL) { |
| 1506 | printk(KERN_INFO KBUILD_MODNAME ": out of memory. " |
| 1507 | "Using less frames\n"); |
| 1508 | break; |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | if (i == 0) { |
| 1513 | printk(KERN_INFO KBUILD_MODNAME ": out of memory. Aborting\n"); |
| 1514 | kfree(cam->pipe->transfer_buffer); |
| 1515 | cam->pipe->transfer_buffer = NULL; |
| 1516 | return -ENOMEM; |
| 1517 | } else |
| 1518 | cam->buffer.dwFrames = i; |
| 1519 | |
| 1520 | /* make sure internal states are set */ |
| 1521 | for (i = 0; i < FRAMES; i++) { |
| 1522 | cam->buffer.frame[i].ulState = ZR364XX_READ_IDLE; |
| 1523 | cam->buffer.frame[i].cur_size = 0; |
| 1524 | } |
| 1525 | |
| 1526 | cam->cur_frame = 0; |
| 1527 | cam->last_frame = -1; |
| 1528 | /*** end create system buffers ***/ |
| 1529 | |
| 1530 | /* start read pipe */ |
| 1531 | zr364xx_start_readpipe(cam); |
| 1532 | DBG(": board initialized\n"); |
| 1533 | return 0; |
| 1534 | } |
| 1535 | |
| 1536 | static int zr364xx_probe(struct usb_interface *intf, |
| 1537 | const struct usb_device_id *id) |
| 1538 | { |
| 1539 | struct usb_device *udev = interface_to_usbdev(intf); |
| 1540 | struct zr364xx_camera *cam = NULL; |
| 1541 | struct usb_host_interface *iface_desc; |
| 1542 | struct usb_endpoint_descriptor *endpoint; |
| 1543 | int err; |
| 1544 | int i; |
| 1545 | |
| 1546 | DBG("probing...\n"); |
| 1547 | |
| 1548 | dev_info(&intf->dev, DRIVER_DESC " compatible webcam plugged\n"); |
| 1549 | dev_info(&intf->dev, "model %04x:%04x detected\n", |
| 1550 | le16_to_cpu(udev->descriptor.idVendor), |
| 1551 | le16_to_cpu(udev->descriptor.idProduct)); |
| 1552 | |
| 1553 | cam = kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL); |
| 1554 | if (cam == NULL) { |
| 1555 | dev_err(&udev->dev, "cam: out of memory !\n"); |
| 1556 | return -ENOMEM; |
| 1557 | } |
| 1558 | /* save the init method used by this camera */ |
| 1559 | cam->method = id->driver_info; |
| 1560 | |
| 1561 | cam->vdev = video_device_alloc(); |
| 1562 | if (cam->vdev == NULL) { |
| 1563 | dev_err(&udev->dev, "cam->vdev: out of memory !\n"); |
| 1564 | kfree(cam); |
| 1565 | cam = NULL; |
| 1566 | return -ENOMEM; |
| 1567 | } |
| 1568 | memcpy(cam->vdev, &zr364xx_template, sizeof(zr364xx_template)); |
| 1569 | cam->vdev->parent = &intf->dev; |
| 1570 | video_set_drvdata(cam->vdev, cam); |
| 1571 | if (debug) |
| 1572 | cam->vdev->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG; |
| 1573 | |
| 1574 | cam->udev = udev; |
| 1575 | |
| 1576 | switch (mode) { |
| 1577 | case 1: |
| 1578 | dev_info(&udev->dev, "160x120 mode selected\n"); |
| 1579 | cam->width = 160; |
| 1580 | cam->height = 120; |
| 1581 | break; |
| 1582 | case 2: |
| 1583 | dev_info(&udev->dev, "640x480 mode selected\n"); |
| 1584 | cam->width = 640; |
| 1585 | cam->height = 480; |
| 1586 | break; |
| 1587 | default: |
| 1588 | dev_info(&udev->dev, "320x240 mode selected\n"); |
| 1589 | cam->width = 320; |
| 1590 | cam->height = 240; |
| 1591 | break; |
| 1592 | } |
| 1593 | |
| 1594 | m0d1[0] = mode; |
| 1595 | m1[2].value = 0xf000 + mode; |
| 1596 | m2[1].value = 0xf000 + mode; |
| 1597 | |
| 1598 | /* special case for METHOD3, the modes are different */ |
| 1599 | if (cam->method == METHOD3) { |
| 1600 | switch (mode) { |
| 1601 | case 1: |
| 1602 | m2[1].value = 0xf000 + 4; |
| 1603 | break; |
| 1604 | case 2: |
| 1605 | m2[1].value = 0xf000 + 0; |
| 1606 | break; |
| 1607 | default: |
| 1608 | m2[1].value = 0xf000 + 1; |
| 1609 | break; |
| 1610 | } |
| 1611 | } |
| 1612 | |
| 1613 | header2[437] = cam->height / 256; |
| 1614 | header2[438] = cam->height % 256; |
| 1615 | header2[439] = cam->width / 256; |
| 1616 | header2[440] = cam->width % 256; |
| 1617 | |
| 1618 | cam->users = 0; |
| 1619 | cam->nb = 0; |
| 1620 | cam->mode.brightness = 64; |
| 1621 | mutex_init(&cam->lock); |
| 1622 | mutex_init(&cam->open_lock); |
| 1623 | |
| 1624 | DBG("dev: %p, udev %p interface %p\n", cam, cam->udev, intf); |
| 1625 | |
| 1626 | /* set up the endpoint information */ |
| 1627 | iface_desc = intf->cur_altsetting; |
| 1628 | DBG("num endpoints %d\n", iface_desc->desc.bNumEndpoints); |
| 1629 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| 1630 | endpoint = &iface_desc->endpoint[i].desc; |
| 1631 | if (!cam->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) { |
| 1632 | /* we found the bulk in endpoint */ |
| 1633 | cam->read_endpoint = endpoint->bEndpointAddress; |
| 1634 | } |
| 1635 | } |
| 1636 | |
| 1637 | if (!cam->read_endpoint) { |
| 1638 | dev_err(&intf->dev, "Could not find bulk-in endpoint\n"); |
| 1639 | video_device_release(cam->vdev); |
| 1640 | kfree(cam); |
| 1641 | cam = NULL; |
| 1642 | return -ENOMEM; |
| 1643 | } |
| 1644 | |
| 1645 | /* v4l */ |
| 1646 | INIT_LIST_HEAD(&cam->vidq.active); |
| 1647 | cam->vidq.cam = cam; |
| 1648 | err = video_register_device(cam->vdev, VFL_TYPE_GRABBER, -1); |
| 1649 | if (err) { |
| 1650 | dev_err(&udev->dev, "video_register_device failed\n"); |
| 1651 | video_device_release(cam->vdev); |
| 1652 | kfree(cam); |
| 1653 | cam = NULL; |
| 1654 | return err; |
| 1655 | } |
| 1656 | |
| 1657 | usb_set_intfdata(intf, cam); |
| 1658 | |
| 1659 | /* load zr364xx board specific */ |
| 1660 | err = zr364xx_board_init(cam); |
| 1661 | if (err) { |
| 1662 | spin_lock_init(&cam->slock); |
| 1663 | return err; |
| 1664 | } |
| 1665 | |
| 1666 | spin_lock_init(&cam->slock); |
| 1667 | |
| 1668 | dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n", |
| 1669 | video_device_node_name(cam->vdev)); |
| 1670 | return 0; |
| 1671 | } |
| 1672 | |
| 1673 | |
| 1674 | static void zr364xx_disconnect(struct usb_interface *intf) |
| 1675 | { |
| 1676 | struct zr364xx_camera *cam = usb_get_intfdata(intf); |
| 1677 | videobuf_mmap_free(&cam->vb_vidq); |
| 1678 | usb_set_intfdata(intf, NULL); |
| 1679 | dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n"); |
| 1680 | zr364xx_destroy(cam); |
| 1681 | } |
| 1682 | |
| 1683 | |
| 1684 | |
| 1685 | /**********************/ |
| 1686 | /* Module integration */ |
| 1687 | /**********************/ |
| 1688 | |
| 1689 | static struct usb_driver zr364xx_driver = { |
| 1690 | .name = "zr364xx", |
| 1691 | .probe = zr364xx_probe, |
| 1692 | .disconnect = zr364xx_disconnect, |
| 1693 | .id_table = device_table |
| 1694 | }; |
| 1695 | |
| 1696 | module_usb_driver(zr364xx_driver); |
| 1697 | |
| 1698 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1699 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 1700 | MODULE_LICENSE("GPL"); |
| 1701 | MODULE_VERSION(DRIVER_VERSION); |