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