SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/cx231xx/cx231xx-core.c

   1 /*
   2    cx231xx-core.c - driver for Conexant Cx23100/101/102
   3                                 USB video capture devices
   4
   5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   6                                 Based on em28xx driver
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/list.h>
  25 #include <linux/module.h>
  26 #include <linux/slab.h>
  27 #include <linux/usb.h>
  28 #include <linux/vmalloc.h>
  29 #include <media/v4l2-common.h>
  30
  31 #include "cx231xx.h"
  32 #include "cx231xx-reg.h"
  33
  34 /* #define ENABLE_DEBUG_ISOC_FRAMES */
  35
  36 static unsigned int core_debug;
  37 module_param(core_debug, int, 0644);
  38 MODULE_PARM_DESC(core_debug, "enable debug messages [core]");
  39
  40 #define cx231xx_coredbg(fmt, arg...) do {\
  41         if (core_debug) \
  42                 printk(KERN_INFO "%s %s :"fmt, \
  43                          dev->name, __func__ , ##arg); } while (0)
  44
  45 static unsigned int reg_debug;
  46 module_param(reg_debug, int, 0644);
  47 MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]");
  48
  49 #define cx231xx_regdbg(fmt, arg...) do {\
  50         if (reg_debug) \
  51                 printk(KERN_INFO "%s %s :"fmt, \
  52                          dev->name, __func__ , ##arg); } while (0)
  53
  54 static int alt = CX231XX_PINOUT;
  55 module_param(alt, int, 0644);
  56 MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
  57
  58 #define cx231xx_isocdbg(fmt, arg...) do {\
  59         if (core_debug) \
  60                 printk(KERN_INFO "%s %s :"fmt, \
  61                          dev->name, __func__ , ##arg); } while (0)
  62
  63 /*****************************************************************
  64 *             Device control list functions                                      *
  65 ******************************************************************/
  66
  67 static LIST_HEAD(cx231xx_devlist);
  68 static DEFINE_MUTEX(cx231xx_devlist_mutex);
  69
  70 /*
  71  * cx231xx_realease_resources()
  72  * unregisters the v4l2,i2c and usb devices
  73  * called when the device gets disconected or at module unload
  74 */
  75 void cx231xx_remove_from_devlist(struct cx231xx *dev)
  76 {
  77         mutex_lock(&cx231xx_devlist_mutex);
  78         list_del(&dev->devlist);
  79         mutex_unlock(&cx231xx_devlist_mutex);
  80 };
  81
  82 void cx231xx_add_into_devlist(struct cx231xx *dev)
  83 {
  84         mutex_lock(&cx231xx_devlist_mutex);
  85         list_add_tail(&dev->devlist, &cx231xx_devlist);
  86         mutex_unlock(&cx231xx_devlist_mutex);
  87 };
  88
  89 static LIST_HEAD(cx231xx_extension_devlist);
  90 static DEFINE_MUTEX(cx231xx_extension_devlist_lock);
  91
  92 int cx231xx_register_extension(struct cx231xx_ops *ops)
  93 {
  94         struct cx231xx *dev = NULL;
  95
  96         mutex_lock(&cx231xx_devlist_mutex);
  97         mutex_lock(&cx231xx_extension_devlist_lock);
  98         list_add_tail(&ops->next, &cx231xx_extension_devlist);
  99         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 100                 if (dev)
 101                         ops->init(dev);
 102         }
 103         printk(KERN_INFO DRIVER_NAME ": %s initialized\n", ops->name);
 104         mutex_unlock(&cx231xx_extension_devlist_lock);
 105         mutex_unlock(&cx231xx_devlist_mutex);
 106         return 0;
 107 }
 108 EXPORT_SYMBOL(cx231xx_register_extension);
 109
 110 void cx231xx_unregister_extension(struct cx231xx_ops *ops)
 111 {
 112         struct cx231xx *dev = NULL;
 113
 114         mutex_lock(&cx231xx_devlist_mutex);
 115         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 116                 if (dev)
 117                         ops->fini(dev);
 118         }
 119
 120         mutex_lock(&cx231xx_extension_devlist_lock);
 121         printk(KERN_INFO DRIVER_NAME ": %s removed\n", ops->name);
 122         list_del(&ops->next);
 123         mutex_unlock(&cx231xx_extension_devlist_lock);
 124         mutex_unlock(&cx231xx_devlist_mutex);
 125 }
 126 EXPORT_SYMBOL(cx231xx_unregister_extension);
 127
 128 void cx231xx_init_extension(struct cx231xx *dev)
 129 {
 130         struct cx231xx_ops *ops = NULL;
 131
 132         mutex_lock(&cx231xx_extension_devlist_lock);
 133         if (!list_empty(&cx231xx_extension_devlist)) {
 134                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 135                         if (ops->init)
 136                                 ops->init(dev);
 137                 }
 138         }
 139         mutex_unlock(&cx231xx_extension_devlist_lock);
 140 }
 141
 142 void cx231xx_close_extension(struct cx231xx *dev)
 143 {
 144         struct cx231xx_ops *ops = NULL;
 145
 146         mutex_lock(&cx231xx_extension_devlist_lock);
 147         if (!list_empty(&cx231xx_extension_devlist)) {
 148                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 149                         if (ops->fini)
 150                                 ops->fini(dev);
 151                 }
 152         }
 153         mutex_unlock(&cx231xx_extension_devlist_lock);
 154 }
 155
 156 /****************************************************************
 157 *               U S B related functions                         *
 158 *****************************************************************/
 159 int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
 160                              struct cx231xx_i2c_xfer_data *req_data)
 161 {
 162         int status = 0;
 163         struct cx231xx *dev = i2c_bus->dev;
 164         struct VENDOR_REQUEST_IN ven_req;
 165
 166         u8 saddr_len = 0;
 167         u8 _i2c_period = 0;
 168         u8 _i2c_nostop = 0;
 169         u8 _i2c_reserve = 0;
 170
 171         /* Get the I2C period, nostop and reserve parameters */
 172         _i2c_period = i2c_bus->i2c_period;
 173         _i2c_nostop = i2c_bus->i2c_nostop;
 174         _i2c_reserve = i2c_bus->i2c_reserve;
 175
 176         saddr_len = req_data->saddr_len;
 177
 178         /* Set wValue */
 179         if (saddr_len == 1)     /* need check saddr_len == 0  */
 180                 ven_req.wValue =
 181                     req_data->
 182                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 183                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 184         else
 185                 ven_req.wValue =
 186                     req_data->
 187                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 188                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 189
 190         /* set channel number */
 191         if (req_data->direction & I2C_M_RD) {
 192                 /* channel number, for read,spec required channel_num +4 */
 193                 ven_req.bRequest = i2c_bus->nr + 4;
 194         } else
 195                 ven_req.bRequest = i2c_bus->nr; /* channel number,  */
 196
 197         /* set index value */
 198         switch (saddr_len) {
 199         case 0:
 200                 ven_req.wIndex = 0;     /* need check */
 201                 break;
 202         case 1:
 203                 ven_req.wIndex = (req_data->saddr_dat & 0xff);
 204                 break;
 205         case 2:
 206                 ven_req.wIndex = req_data->saddr_dat;
 207                 break;
 208         }
 209
 210         /* set wLength value */
 211         ven_req.wLength = req_data->buf_size;
 212
 213         /* set bData value */
 214         ven_req.bData = 0;
 215
 216         /* set the direction */
 217         if (req_data->direction) {
 218                 ven_req.direction = USB_DIR_IN;
 219                 memset(req_data->p_buffer, 0x00, ven_req.wLength);
 220         } else
 221                 ven_req.direction = USB_DIR_OUT;
 222
 223         /* set the buffer for read / write */
 224         ven_req.pBuff = req_data->p_buffer;
 225
 226
 227         /* call common vendor command request */
 228         status = cx231xx_send_vendor_cmd(dev, &ven_req);
 229         if (status < 0) {
 230                 cx231xx_info
 231                     ("UsbInterface::sendCommand, failed with status -%d\n",
 232                      status);
 233         }
 234
 235         return status;
 236 }
 237 EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
 238
 239 /*
 240  * cx231xx_read_ctrl_reg()
 241  * reads data from the usb device specifying bRequest and wValue
 242  */
 243 int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
 244                           char *buf, int len)
 245 {
 246         u8 val = 0;
 247         int ret;
 248         int pipe = usb_rcvctrlpipe(dev->udev, 0);
 249
 250         if (dev->state & DEV_DISCONNECTED)
 251                 return -ENODEV;
 252
 253         if (len > URB_MAX_CTRL_SIZE)
 254                 return -EINVAL;
 255
 256         switch (len) {
 257         case 1:
 258                 val = ENABLE_ONE_BYTE;
 259                 break;
 260         case 2:
 261                 val = ENABLE_TWE_BYTE;
 262                 break;
 263         case 3:
 264                 val = ENABLE_THREE_BYTE;
 265                 break;
 266         case 4:
 267                 val = ENABLE_FOUR_BYTE;
 268                 break;
 269         default:
 270                 val = 0xFF;     /* invalid option */
 271         }
 272
 273         if (val == 0xFF)
 274                 return -EINVAL;
 275
 276         if (reg_debug) {
 277                 cx231xx_isocdbg("(pipe 0x%08x): "
 278                                 "IN:  %02x %02x %02x %02x %02x %02x %02x %02x ",
 279                                 pipe,
 280                                 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 281                                 req, 0, val,
 282                                 reg & 0xff, reg >> 8, len & 0xff, len >> 8);
 283         }
 284
 285         mutex_lock(&dev->ctrl_urb_lock);
 286         ret = usb_control_msg(dev->udev, pipe, req,
 287                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 288                               val, reg, dev->urb_buf, len, HZ);
 289         if (ret < 0) {
 290                 cx231xx_isocdbg(" failed!\n");
 291                 /* mutex_unlock(&dev->ctrl_urb_lock); */
 292                 return ret;
 293         }
 294
 295         if (len)
 296                 memcpy(buf, dev->urb_buf, len);
 297
 298         mutex_unlock(&dev->ctrl_urb_lock);
 299
 300         if (reg_debug) {
 301                 int byte;
 302
 303                 cx231xx_isocdbg("<<<");
 304                 for (byte = 0; byte < len; byte++)
 305                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 306                 cx231xx_isocdbg("\n");
 307         }
 308
 309         return ret;
 310 }
 311
 312 int cx231xx_send_vendor_cmd(struct cx231xx *dev,
 313                                 struct VENDOR_REQUEST_IN *ven_req)
 314 {
 315         int ret;
 316         int pipe = 0;
 317
 318         if (dev->state & DEV_DISCONNECTED)
 319                 return -ENODEV;
 320
 321         if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
 322                 return -EINVAL;
 323
 324         if (ven_req->direction)
 325                 pipe = usb_rcvctrlpipe(dev->udev, 0);
 326         else
 327                 pipe = usb_sndctrlpipe(dev->udev, 0);
 328
 329         if (reg_debug) {
 330                 int byte;
 331
 332                 cx231xx_isocdbg("(pipe 0x%08x): "
 333                                 "OUT: %02x %02x %02x %04x %04x %04x >>>",
 334                                 pipe,
 335                                 ven_req->
 336                                 direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 337                                 ven_req->bRequest, 0, ven_req->wValue,
 338                                 ven_req->wIndex, ven_req->wLength);
 339
 340                 for (byte = 0; byte < ven_req->wLength; byte++)
 341                         cx231xx_isocdbg(" %02x",
 342                                         (unsigned char)ven_req->pBuff[byte]);
 343                 cx231xx_isocdbg("\n");
 344         }
 345
 346         mutex_lock(&dev->ctrl_urb_lock);
 347         ret = usb_control_msg(dev->udev, pipe, ven_req->bRequest,
 348                               ven_req->
 349                               direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 350                               ven_req->wValue, ven_req->wIndex, ven_req->pBuff,
 351                               ven_req->wLength, HZ);
 352         mutex_unlock(&dev->ctrl_urb_lock);
 353
 354         return ret;
 355 }
 356
 357 /*
 358  * cx231xx_write_ctrl_reg()
 359  * sends data to the usb device, specifying bRequest
 360  */
 361 int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
 362                            int len)
 363 {
 364         u8 val = 0;
 365         int ret;
 366         int pipe = usb_sndctrlpipe(dev->udev, 0);
 367
 368         if (dev->state & DEV_DISCONNECTED)
 369                 return -ENODEV;
 370
 371         if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
 372                 return -EINVAL;
 373
 374         switch (len) {
 375         case 1:
 376                 val = ENABLE_ONE_BYTE;
 377                 break;
 378         case 2:
 379                 val = ENABLE_TWE_BYTE;
 380                 break;
 381         case 3:
 382                 val = ENABLE_THREE_BYTE;
 383                 break;
 384         case 4:
 385                 val = ENABLE_FOUR_BYTE;
 386                 break;
 387         default:
 388                 val = 0xFF;     /* invalid option */
 389         }
 390
 391         if (val == 0xFF)
 392                 return -EINVAL;
 393
 394         if (reg_debug) {
 395                 int byte;
 396
 397                 cx231xx_isocdbg("(pipe 0x%08x): "
 398                         "OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
 399                         pipe,
 400                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 401                         req, 0, val, reg & 0xff,
 402                         reg >> 8, len & 0xff, len >> 8);
 403
 404                 for (byte = 0; byte < len; byte++)
 405                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 406                 cx231xx_isocdbg("\n");
 407         }
 408
 409         mutex_lock(&dev->ctrl_urb_lock);
 410         memcpy(dev->urb_buf, buf, len);
 411         ret = usb_control_msg(dev->udev, pipe, req,
 412                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 413                               val, reg, dev->urb_buf, len, HZ);
 414         mutex_unlock(&dev->ctrl_urb_lock);
 415
 416         return ret;
 417 }
 418
 419 /****************************************************************
 420 *           USB Alternate Setting functions                     *
 421 *****************************************************************/
 422
 423 int cx231xx_set_video_alternate(struct cx231xx *dev)
 424 {
 425         int errCode, prev_alt = dev->video_mode.alt;
 426         unsigned int min_pkt_size = dev->width * 2 + 4;
 427         u32 usb_interface_index = 0;
 428
 429         /* When image size is bigger than a certain value,
 430            the frame size should be increased, otherwise, only
 431            green screen will be received.
 432          */
 433         if (dev->width * 2 * dev->height > 720 * 240 * 2)
 434                 min_pkt_size *= 2;
 435
 436         if (dev->width > 360) {
 437                 /* resolutions: 720,704,640 */
 438                 dev->video_mode.alt = 3;
 439         } else if (dev->width > 180) {
 440                 /* resolutions: 360,352,320,240 */
 441                 dev->video_mode.alt = 2;
 442         } else if (dev->width > 0) {
 443                 /* resolutions: 180,176,160,128,88 */
 444                 dev->video_mode.alt = 1;
 445         } else {
 446                 /* Change to alt0 BULK to release USB bandwidth */
 447                 dev->video_mode.alt = 0;
 448         }
 449
 450         /* Get the correct video interface Index */
 451         usb_interface_index =
 452             dev->current_pcb_config.hs_config_info[0].interface_info.
 453             video_index + 1;
 454
 455         if (dev->video_mode.alt != prev_alt) {
 456                 cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
 457                                 min_pkt_size, dev->video_mode.alt);
 458                 dev->video_mode.max_pkt_size =
 459                     dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
 460                 cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
 461                                 dev->video_mode.alt,
 462                                 dev->video_mode.max_pkt_size);
 463                 cx231xx_info
 464                     (" setting alt %d with wMaxPktSize=%u , Interface = %d\n",
 465                      dev->video_mode.alt, dev->video_mode.max_pkt_size,
 466                      usb_interface_index);
 467                 errCode =
 468                     usb_set_interface(dev->udev, usb_interface_index,
 469                                       dev->video_mode.alt);
 470                 if (errCode < 0) {
 471                         cx231xx_errdev
 472                             ("cannot change alt number to %d (error=%i)\n",
 473                              dev->video_mode.alt, errCode);
 474                         return errCode;
 475                 }
 476         }
 477         return 0;
 478 }
 479
 480 int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
 481 {
 482         int status = 0;
 483         u32 usb_interface_index = 0;
 484         u32 max_pkt_size = 0;
 485
 486         switch (index) {
 487         case INDEX_TS1:
 488                 usb_interface_index =
 489                     dev->current_pcb_config.hs_config_info[0].interface_info.
 490                     ts1_index + 1;
 491                 dev->video_mode.alt = alt;
 492                 if (dev->ts1_mode.alt_max_pkt_size != NULL)
 493                         max_pkt_size = dev->ts1_mode.max_pkt_size =
 494                             dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
 495                 break;
 496         case INDEX_TS2:
 497                 usb_interface_index =
 498                     dev->current_pcb_config.hs_config_info[0].interface_info.
 499                     ts2_index + 1;
 500                 break;
 501         case INDEX_AUDIO:
 502                 usb_interface_index =
 503                     dev->current_pcb_config.hs_config_info[0].interface_info.
 504                     audio_index + 1;
 505                 dev->adev.alt = alt;
 506                 if (dev->adev.alt_max_pkt_size != NULL)
 507                         max_pkt_size = dev->adev.max_pkt_size =
 508                             dev->adev.alt_max_pkt_size[dev->adev.alt];
 509                 break;
 510         case INDEX_VIDEO:
 511                 usb_interface_index =
 512                     dev->current_pcb_config.hs_config_info[0].interface_info.
 513                     video_index + 1;
 514                 dev->video_mode.alt = alt;
 515                 if (dev->video_mode.alt_max_pkt_size != NULL)
 516                         max_pkt_size = dev->video_mode.max_pkt_size =
 517                             dev->video_mode.alt_max_pkt_size[dev->video_mode.
 518                                                              alt];
 519                 break;
 520         case INDEX_VANC:
 521                 usb_interface_index =
 522                     dev->current_pcb_config.hs_config_info[0].interface_info.
 523                     vanc_index + 1;
 524                 dev->vbi_mode.alt = alt;
 525                 if (dev->vbi_mode.alt_max_pkt_size != NULL)
 526                         max_pkt_size = dev->vbi_mode.max_pkt_size =
 527                             dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
 528                 break;
 529         case INDEX_HANC:
 530                 usb_interface_index =
 531                     dev->current_pcb_config.hs_config_info[0].interface_info.
 532                     hanc_index + 1;
 533                 dev->sliced_cc_mode.alt = alt;
 534                 if (dev->sliced_cc_mode.alt_max_pkt_size != NULL)
 535                         max_pkt_size = dev->sliced_cc_mode.max_pkt_size =
 536                             dev->sliced_cc_mode.alt_max_pkt_size[dev->
 537                                                                  sliced_cc_mode.
 538                                                                  alt];
 539                 break;
 540         default:
 541                 break;
 542         }
 543
 544         if (alt > 0 && max_pkt_size == 0) {
 545                 cx231xx_errdev
 546                 ("can't change interface %d alt no. to %d: Max. Pkt size = 0\n",
 547                 usb_interface_index, alt);
 548                 return -1;
 549         }
 550
 551         cx231xx_info
 552             (" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n",
 553              alt, max_pkt_size, usb_interface_index);
 554
 555         if (usb_interface_index > 0) {
 556                 status = usb_set_interface(dev->udev, usb_interface_index, alt);
 557                 if (status < 0) {
 558                         cx231xx_errdev
 559                         ("can't change interface %d alt no. to %d (err=%i)\n",
 560                         usb_interface_index, alt, status);
 561                         return status;
 562                 }
 563         }
 564
 565         return status;
 566 }
 567 EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
 568
 569 int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
 570 {
 571         int rc = 0;
 572
 573         if (!gpio)
 574                 return rc;
 575
 576         /* Send GPIO reset sequences specified at board entry */
 577         while (gpio->sleep >= 0) {
 578                 rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val);
 579                 if (rc < 0)
 580                         return rc;
 581
 582                 if (gpio->sleep > 0)
 583                         msleep(gpio->sleep);
 584
 585                 gpio++;
 586         }
 587         return rc;
 588 }
 589
 590 int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
 591 {
 592         if (dev->mode == set_mode)
 593                 return 0;
 594
 595         if (set_mode == CX231XX_SUSPEND) {
 596                 /* Set the chip in power saving mode */
 597                 dev->mode = set_mode;
 598         }
 599
 600         /* Resource is locked */
 601         if (dev->mode != CX231XX_SUSPEND)
 602                 return -EINVAL;
 603
 604         dev->mode = set_mode;
 605
 606         if (dev->mode == CX231XX_DIGITAL_MODE)
 607                 ;/* Set Digital power mode */
 608         else
 609                 ;/* Set Analog Power mode */
 610
 611         return 0;
 612 }
 613 EXPORT_SYMBOL_GPL(cx231xx_set_mode);
 614
 615 /*****************************************************************
 616 *                URB Streaming functions                         *
 617 ******************************************************************/
 618
 619 /*
 620  * IRQ callback, called by URB callback
 621  */
 622 static void cx231xx_irq_callback(struct urb *urb)
 623 {
 624         struct cx231xx_dmaqueue *dma_q = urb->context;
 625         struct cx231xx_video_mode *vmode =
 626             container_of(dma_q, struct cx231xx_video_mode, vidq);
 627         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 628         int rc, i;
 629
 630         switch (urb->status) {
 631         case 0:         /* success */
 632         case -ETIMEDOUT:        /* NAK */
 633                 break;
 634         case -ECONNRESET:       /* kill */
 635         case -ENOENT:
 636         case -ESHUTDOWN:
 637                 return;
 638         default:                /* error */
 639                 cx231xx_isocdbg("urb completition error %d.\n", urb->status);
 640                 break;
 641         }
 642
 643         /* Copy data from URB */
 644         spin_lock(&dev->video_mode.slock);
 645         rc = dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
 646         spin_unlock(&dev->video_mode.slock);
 647
 648         /* Reset urb buffers */
 649         for (i = 0; i < urb->number_of_packets; i++) {
 650                 urb->iso_frame_desc[i].status = 0;
 651                 urb->iso_frame_desc[i].actual_length = 0;
 652         }
 653         urb->status = 0;
 654
 655         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 656         if (urb->status) {
 657                 cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
 658                                 urb->status);
 659         }
 660 }
 661
 662 /*
 663  * Stop and Deallocate URBs
 664  */
 665 void cx231xx_uninit_isoc(struct cx231xx *dev)
 666 {
 667         struct urb *urb;
 668         int i;
 669
 670         cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
 671
 672         dev->video_mode.isoc_ctl.nfields = -1;
 673         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 674                 urb = dev->video_mode.isoc_ctl.urb[i];
 675                 if (urb) {
 676                         if (!irqs_disabled())
 677                                 usb_kill_urb(urb);
 678                         else
 679                                 usb_unlink_urb(urb);
 680
 681                         if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 682                                 usb_buffer_free(dev->udev,
 683                                                 urb->transfer_buffer_length,
 684                                                 dev->video_mode.isoc_ctl.
 685                                                 transfer_buffer[i],
 686                                                 urb->transfer_dma);
 687                         }
 688                         usb_free_urb(urb);
 689                         dev->video_mode.isoc_ctl.urb[i] = NULL;
 690                 }
 691                 dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
 692         }
 693
 694         kfree(dev->video_mode.isoc_ctl.urb);
 695         kfree(dev->video_mode.isoc_ctl.transfer_buffer);
 696
 697         dev->video_mode.isoc_ctl.urb = NULL;
 698         dev->video_mode.isoc_ctl.transfer_buffer = NULL;
 699         dev->video_mode.isoc_ctl.num_bufs = 0;
 700
 701         cx231xx_capture_start(dev, 0, Raw_Video);
 702 }
 703 EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
 704
 705 /*
 706  * Allocate URBs and start IRQ
 707  */
 708 int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
 709                       int num_bufs, int max_pkt_size,
 710                       int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
 711 {
 712         struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
 713         int i;
 714         int sb_size, pipe;
 715         struct urb *urb;
 716         int j, k;
 717         int rc;
 718
 719         cx231xx_isocdbg("cx231xx: called cx231xx_prepare_isoc\n");
 720
 721         dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
 722
 723         cx231xx_info("Setting Video mux to %d\n", dev->video_input);
 724         video_mux(dev, dev->video_input);
 725
 726         /* De-allocates all pending stuff */
 727         cx231xx_uninit_isoc(dev);
 728
 729         dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
 730         dev->video_mode.isoc_ctl.num_bufs = num_bufs;
 731         dma_q->pos = 0;
 732         dma_q->is_partial_line = 0;
 733         dma_q->last_sav = 0;
 734         dma_q->current_field = -1;
 735         dma_q->field1_done = 0;
 736         dma_q->lines_per_field = dev->height / 2;
 737         dma_q->bytes_left_in_line = dev->width << 1;
 738         dma_q->lines_completed = 0;
 739         for (i = 0; i < 8; i++)
 740                 dma_q->partial_buf[i] = 0;
 741
 742         dev->video_mode.isoc_ctl.urb =
 743             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 744         if (!dev->video_mode.isoc_ctl.urb) {
 745                 cx231xx_errdev("cannot alloc memory for usb buffers\n");
 746                 return -ENOMEM;
 747         }
 748
 749         dev->video_mode.isoc_ctl.transfer_buffer =
 750             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 751         if (!dev->video_mode.isoc_ctl.transfer_buffer) {
 752                 cx231xx_errdev("cannot allocate memory for usbtransfer\n");
 753                 kfree(dev->video_mode.isoc_ctl.urb);
 754                 return -ENOMEM;
 755         }
 756
 757         dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
 758         dev->video_mode.isoc_ctl.buf = NULL;
 759
 760         sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
 761
 762         /* allocate urbs and transfer buffers */
 763         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 764                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 765                 if (!urb) {
 766                         cx231xx_err("cannot alloc isoc_ctl.urb %i\n", i);
 767                         cx231xx_uninit_isoc(dev);
 768                         return -ENOMEM;
 769                 }
 770                 dev->video_mode.isoc_ctl.urb[i] = urb;
 771
 772                 dev->video_mode.isoc_ctl.transfer_buffer[i] =
 773                     usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL,
 774                                      &urb->transfer_dma);
 775                 if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 776                         cx231xx_err("unable to allocate %i bytes for transfer"
 777                                     " buffer %i%s\n",
 778                                     sb_size, i,
 779                                     in_interrupt() ? " while in int" : "");
 780                         cx231xx_uninit_isoc(dev);
 781                         return -ENOMEM;
 782                 }
 783                 memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
 784
 785                 pipe =
 786                     usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
 787
 788                 usb_fill_int_urb(urb, dev->udev, pipe,
 789                                  dev->video_mode.isoc_ctl.transfer_buffer[i],
 790                                  sb_size, cx231xx_irq_callback, dma_q, 1);
 791
 792                 urb->number_of_packets = max_packets;
 793                 urb->transfer_flags = URB_ISO_ASAP;
 794
 795                 k = 0;
 796                 for (j = 0; j < max_packets; j++) {
 797                         urb->iso_frame_desc[j].offset = k;
 798                         urb->iso_frame_desc[j].length =
 799                             dev->video_mode.isoc_ctl.max_pkt_size;
 800                         k += dev->video_mode.isoc_ctl.max_pkt_size;
 801                 }
 802         }
 803
 804         init_waitqueue_head(&dma_q->wq);
 805
 806         /* submit urbs and enables IRQ */
 807         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 808                 rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i],
 809                                     GFP_ATOMIC);
 810                 if (rc) {
 811                         cx231xx_err("submit of urb %i failed (error=%i)\n", i,
 812                                     rc);
 813                         cx231xx_uninit_isoc(dev);
 814                         return rc;
 815                 }
 816         }
 817
 818         cx231xx_capture_start(dev, 1, Raw_Video);
 819
 820         return 0;
 821 }
 822 EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
 823
 824 /*****************************************************************
 825 *             Device Init/UnInit functions                       *
 826 ******************************************************************/
 827 int cx231xx_dev_init(struct cx231xx *dev)
 828 {
 829         int errCode = 0;
 830
 831         /* Initialize I2C bus */
 832
 833         /* External Master 1 Bus */
 834         dev->i2c_bus[0].nr = 0;
 835         dev->i2c_bus[0].dev = dev;
 836         dev->i2c_bus[0].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 837         dev->i2c_bus[0].i2c_nostop = 0;
 838         dev->i2c_bus[0].i2c_reserve = 0;
 839
 840         /* External Master 2 Bus */
 841         dev->i2c_bus[1].nr = 1;
 842         dev->i2c_bus[1].dev = dev;
 843         dev->i2c_bus[1].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 844         dev->i2c_bus[1].i2c_nostop = 0;
 845         dev->i2c_bus[1].i2c_reserve = 0;
 846
 847         /* Internal Master 3 Bus */
 848         dev->i2c_bus[2].nr = 2;
 849         dev->i2c_bus[2].dev = dev;
 850         dev->i2c_bus[2].i2c_period = I2C_SPEED_400K;    /* 400kHz */
 851         dev->i2c_bus[2].i2c_nostop = 0;
 852         dev->i2c_bus[2].i2c_reserve = 0;
 853
 854         /* register I2C buses */
 855         cx231xx_i2c_register(&dev->i2c_bus[0]);
 856         cx231xx_i2c_register(&dev->i2c_bus[1]);
 857         cx231xx_i2c_register(&dev->i2c_bus[2]);
 858
 859         /* init hardware */
 860         /* Note : with out calling set power mode function,
 861         afe can not be set up correctly */
 862         errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
 863         if (errCode < 0) {
 864                 cx231xx_errdev
 865                     ("%s: Failed to set Power - errCode [%d]!\n",
 866                      __func__, errCode);
 867                 return errCode;
 868         }
 869
 870         /* initialize Colibri block */
 871         errCode = cx231xx_afe_init_super_block(dev, 0x23c);
 872         if (errCode < 0) {
 873                 cx231xx_errdev
 874                     ("%s: cx231xx_afe init super block - errCode [%d]!\n",
 875                      __func__, errCode);
 876                 return errCode;
 877         }
 878         errCode = cx231xx_afe_init_channels(dev);
 879         if (errCode < 0) {
 880                 cx231xx_errdev
 881                     ("%s: cx231xx_afe init channels - errCode [%d]!\n",
 882                      __func__, errCode);
 883                 return errCode;
 884         }
 885
 886         /* Set DIF in By pass mode */
 887         errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
 888         if (errCode < 0) {
 889                 cx231xx_errdev
 890                     ("%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
 891                      __func__, errCode);
 892                 return errCode;
 893         }
 894
 895         /* I2S block related functions */
 896         errCode = cx231xx_i2s_blk_initialize(dev);
 897         if (errCode < 0) {
 898                 cx231xx_errdev
 899                     ("%s: cx231xx_i2s block initialize - errCode [%d]!\n",
 900                      __func__, errCode);
 901                 return errCode;
 902         }
 903
 904         /* init control pins */
 905         errCode = cx231xx_init_ctrl_pin_status(dev);
 906         if (errCode < 0) {
 907                 cx231xx_errdev("%s: cx231xx_init ctrl pins - errCode [%d]!\n",
 908                                __func__, errCode);
 909                 return errCode;
 910         }
 911
 912         /* set AGC mode to Analog */
 913         errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
 914         if (errCode < 0) {
 915                 cx231xx_errdev
 916                     ("%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
 917                      __func__, errCode);
 918                 return errCode;
 919         }
 920
 921         /* set all alternate settings to zero initially */
 922         cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
 923         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
 924         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
 925         if (dev->board.has_dvb)
 926                 cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
 927
 928         /* set the I2C master port to 3 on channel 1 */
 929         errCode = cx231xx_enable_i2c_for_tuner(dev, I2C_3);
 930
 931         return errCode;
 932 }
 933 EXPORT_SYMBOL_GPL(cx231xx_dev_init);
 934
 935 void cx231xx_dev_uninit(struct cx231xx *dev)
 936 {
 937         /* Un Initialize I2C bus */
 938         cx231xx_i2c_unregister(&dev->i2c_bus[2]);
 939         cx231xx_i2c_unregister(&dev->i2c_bus[1]);
 940         cx231xx_i2c_unregister(&dev->i2c_bus[0]);
 941 }
 942 EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
 943
 944 /*****************************************************************
 945 *              G P I O related functions                         *
 946 ******************************************************************/
 947 int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 * gpio_val,
 948                           u8 len, u8 request, u8 direction)
 949 {
 950         int status = 0;
 951         struct VENDOR_REQUEST_IN ven_req;
 952
 953         /* Set wValue */
 954         ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff);
 955
 956         /* set request */
 957         if (!request) {
 958                 if (direction)
 959                         ven_req.bRequest = VRT_GET_GPIO;        /* 0x8 gpio */
 960                 else
 961                         ven_req.bRequest = VRT_SET_GPIO;        /* 0x9 gpio */
 962         } else {
 963                 if (direction)
 964                         ven_req.bRequest = VRT_GET_GPIE;        /* 0xa gpie */
 965                 else
 966                         ven_req.bRequest = VRT_SET_GPIE;        /* 0xb gpie */
 967         }
 968
 969         /* set index value */
 970         ven_req.wIndex = (u16) (gpio_bit & 0xffff);
 971
 972         /* set wLength value */
 973         ven_req.wLength = len;
 974
 975         /* set bData value */
 976         ven_req.bData = 0;
 977
 978         /* set the buffer for read / write */
 979         ven_req.pBuff = gpio_val;
 980
 981         /* set the direction */
 982         if (direction) {
 983                 ven_req.direction = USB_DIR_IN;
 984                 memset(ven_req.pBuff, 0x00, ven_req.wLength);
 985         } else
 986                 ven_req.direction = USB_DIR_OUT;
 987
 988
 989         /* call common vendor command request */
 990         status = cx231xx_send_vendor_cmd(dev, &ven_req);
 991         if (status < 0) {
 992                 cx231xx_info
 993                     ("UsbInterface::sendCommand, failed with status -%d\n",
 994                      status);
 995         }
 996
 997         return status;
 998 }
 999 EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
1000
1001 /*****************************************************************
1002  *    C O N T R O L - Register R E A D / W R I T E functions     *
1003  *****************************************************************/
1004 int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
1005 {
1006         u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
1007         u32 tmp = 0;
1008         int status = 0;
1009
1010         status =
1011             cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4);
1012         if (status < 0)
1013                 return status;
1014
1015         tmp = *((u32 *) value);
1016         tmp |= mode;
1017
1018         value[0] = (u8) tmp;
1019         value[1] = (u8) (tmp >> 8);
1020         value[2] = (u8) (tmp >> 16);
1021         value[3] = (u8) (tmp >> 24);
1022
1023         status =
1024             cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4);
1025
1026         return status;
1027 }
1028
1029 /*****************************************************************
1030  *            I 2 C Internal C O N T R O L   functions           *
1031  *****************************************************************/
1032 int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1033                           u8 saddr_len, u32 *data, u8 data_len)
1034 {
1035         int status = 0;
1036         struct cx231xx_i2c_xfer_data req_data;
1037         u8 value[4] = { 0, 0, 0, 0 };
1038
1039         if (saddr_len == 0)
1040                 saddr = 0;
1041         else if (saddr_len == 0)
1042                 saddr &= 0xff;
1043
1044         /* prepare xfer_data struct */
1045         req_data.dev_addr = dev_addr >> 1;
1046         req_data.direction = I2C_M_RD;
1047         req_data.saddr_len = saddr_len;
1048         req_data.saddr_dat = saddr;
1049         req_data.buf_size = data_len;
1050         req_data.p_buffer = (u8 *) value;
1051
1052         /* usb send command */
1053         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1054
1055         if (status >= 0) {
1056                 /* Copy the data read back to main buffer */
1057                 if (data_len == 1)
1058                         *data = value[0];
1059                 else
1060                         *data =
1061                             value[0] | value[1] << 8 | value[2] << 16 | value[3]
1062                             << 24;
1063         }
1064
1065         return status;
1066 }
1067
1068 int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1069                            u8 saddr_len, u32 data, u8 data_len)
1070 {
1071         int status = 0;
1072         u8 value[4] = { 0, 0, 0, 0 };
1073         struct cx231xx_i2c_xfer_data req_data;
1074
1075         value[0] = (u8) data;
1076         value[1] = (u8) (data >> 8);
1077         value[2] = (u8) (data >> 16);
1078         value[3] = (u8) (data >> 24);
1079
1080         if (saddr_len == 0)
1081                 saddr = 0;
1082         else if (saddr_len == 0)
1083                 saddr &= 0xff;
1084
1085         /* prepare xfer_data struct */
1086         req_data.dev_addr = dev_addr >> 1;
1087         req_data.direction = 0;
1088         req_data.saddr_len = saddr_len;
1089         req_data.saddr_dat = saddr;
1090         req_data.buf_size = data_len;
1091         req_data.p_buffer = value;
1092
1093         /* usb send command */
1094         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1095
1096         return status;
1097 }
1098
1099 int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
1100                            u16 register_address, u8 bit_start, u8 bit_end,
1101                            u32 value)
1102 {
1103         int status = 0;
1104         u32 tmp;
1105         u32 mask = 0;
1106         int i;
1107
1108         if (bit_start > (size - 1) || bit_end > (size - 1))
1109                 return -1;
1110
1111         if (size == 8) {
1112                 status =
1113                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1114                                           &tmp, 1);
1115         } else {
1116                 status =
1117                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1118                                           &tmp, 4);
1119         }
1120
1121         if (status < 0)
1122                 return status;
1123
1124         mask = 1 << bit_end;
1125         for (i = bit_end; i > bit_start && i > 0; i--)
1126                 mask = mask + (1 << (i - 1));
1127
1128         value <<= bit_start;
1129
1130         if (size == 8) {
1131                 tmp &= ~mask;
1132                 tmp |= value;
1133                 tmp &= 0xff;
1134                 status =
1135                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1136                                            tmp, 1);
1137         } else {
1138                 tmp &= ~mask;
1139                 tmp |= value;
1140                 status =
1141                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1142                                            tmp, 4);
1143         }
1144
1145         return status;
1146 }
1147
1148 int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
1149                                         u16 saddr, u32 mask, u32 value)
1150 {
1151         u32 temp;
1152         int status = 0;
1153
1154         status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
1155
1156         if (status < 0)
1157                 return status;
1158
1159         temp &= ~mask;
1160         temp |= value;
1161
1162         status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
1163
1164         return status;
1165 }
1166
1167 u32 cx231xx_set_field(u32 field_mask, u32 data)
1168 {
1169         u32 temp;
1170
1171         for (temp = field_mask; (temp & 1) == 0; temp >>= 1)
1172                 data <<= 1;
1173
1174         return data;
1175 }