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/usb.h>
  27 #include <linux/vmalloc.h>
  28 #include <media/v4l2-common.h>
  29
  30 #include "cx231xx.h"
  31 #include "cx231xx-reg.h"
  32
  33 /* #define ENABLE_DEBUG_ISOC_FRAMES */
  34
  35 static unsigned int core_debug;
  36 module_param(core_debug, int, 0644);
  37 MODULE_PARM_DESC(core_debug, "enable debug messages [core]");
  38
  39 #define cx231xx_coredbg(fmt, arg...) do {\
  40         if (core_debug) \
  41                 printk(KERN_INFO "%s %s :"fmt, \
  42                          dev->name, __func__ , ##arg); } while (0)
  43
  44 static unsigned int reg_debug;
  45 module_param(reg_debug, int, 0644);
  46 MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]");
  47
  48 #define cx231xx_regdbg(fmt, arg...) do {\
  49         if (reg_debug) \
  50                 printk(KERN_INFO "%s %s :"fmt, \
  51                          dev->name, __func__ , ##arg); } while (0)
  52
  53 static int alt = CX231XX_PINOUT;
  54 module_param(alt, int, 0644);
  55 MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
  56
  57 /* FIXME */
  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 struct cx231xx *cx231xx_get_device(int minor,
  71                                    enum v4l2_buf_type *fh_type, int *has_radio)
  72 {
  73         struct cx231xx *h, *dev = NULL;
  74
  75         *fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
  76         *has_radio = 0;
  77
  78         mutex_lock(&cx231xx_devlist_mutex);
  79         list_for_each_entry(h, &cx231xx_devlist, devlist) {
  80                 if (h->vdev->minor == minor)
  81                         dev = h;
  82                 if (h->vbi_dev->minor == minor) {
  83                         dev = h;
  84                         *fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
  85                 }
  86                 if (h->radio_dev && h->radio_dev->minor == minor) {
  87                         dev = h;
  88                         *has_radio = 1;
  89                 }
  90         }
  91         mutex_unlock(&cx231xx_devlist_mutex);
  92
  93         return dev;
  94 }
  95
  96 /*
  97  * cx231xx_realease_resources()
  98  * unregisters the v4l2,i2c and usb devices
  99  * called when the device gets disconected or at module unload
 100 */
 101 void cx231xx_remove_from_devlist(struct cx231xx *dev)
 102 {
 103         mutex_lock(&cx231xx_devlist_mutex);
 104         list_del(&dev->devlist);
 105         mutex_unlock(&cx231xx_devlist_mutex);
 106 };
 107
 108 void cx231xx_add_into_devlist(struct cx231xx *dev)
 109 {
 110         mutex_lock(&cx231xx_devlist_mutex);
 111         list_add_tail(&dev->devlist, &cx231xx_devlist);
 112         mutex_unlock(&cx231xx_devlist_mutex);
 113 };
 114
 115 static LIST_HEAD(cx231xx_extension_devlist);
 116 static DEFINE_MUTEX(cx231xx_extension_devlist_lock);
 117
 118 int cx231xx_register_extension(struct cx231xx_ops *ops)
 119 {
 120         struct cx231xx *dev = NULL;
 121
 122         mutex_lock(&cx231xx_devlist_mutex);
 123         mutex_lock(&cx231xx_extension_devlist_lock);
 124         list_add_tail(&ops->next, &cx231xx_extension_devlist);
 125         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 126                 if (dev)
 127                         ops->init(dev);
 128         }
 129         cx231xx_info("Cx231xx: Initialized (%s) extension\n", ops->name);
 130         mutex_unlock(&cx231xx_extension_devlist_lock);
 131         mutex_unlock(&cx231xx_devlist_mutex);
 132         return 0;
 133 }
 134 EXPORT_SYMBOL(cx231xx_register_extension);
 135
 136 void cx231xx_unregister_extension(struct cx231xx_ops *ops)
 137 {
 138         struct cx231xx *dev = NULL;
 139
 140         mutex_lock(&cx231xx_devlist_mutex);
 141         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 142                 if (dev)
 143                         ops->fini(dev);
 144         }
 145
 146         mutex_lock(&cx231xx_extension_devlist_lock);
 147         cx231xx_info("Cx231xx: Removed (%s) extension\n", ops->name);
 148         list_del(&ops->next);
 149         mutex_unlock(&cx231xx_extension_devlist_lock);
 150         mutex_unlock(&cx231xx_devlist_mutex);
 151 }
 152 EXPORT_SYMBOL(cx231xx_unregister_extension);
 153
 154 void cx231xx_init_extension(struct cx231xx *dev)
 155 {
 156         struct cx231xx_ops *ops = NULL;
 157
 158         mutex_lock(&cx231xx_extension_devlist_lock);
 159         if (!list_empty(&cx231xx_extension_devlist)) {
 160                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 161                         if (ops->init)
 162                                 ops->init(dev);
 163                 }
 164         }
 165         mutex_unlock(&cx231xx_extension_devlist_lock);
 166 }
 167
 168 void cx231xx_close_extension(struct cx231xx *dev)
 169 {
 170         struct cx231xx_ops *ops = NULL;
 171
 172         mutex_lock(&cx231xx_extension_devlist_lock);
 173         if (!list_empty(&cx231xx_extension_devlist)) {
 174                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 175                         if (ops->fini)
 176                                 ops->fini(dev);
 177                 }
 178         }
 179         mutex_unlock(&cx231xx_extension_devlist_lock);
 180 }
 181
 182 /****************************************************************
 183 *               U S B related functions                         *
 184 *****************************************************************/
 185 int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
 186                              struct cx231xx_i2c_xfer_data *req_data)
 187 {
 188         int status = 0;
 189         struct cx231xx *dev = i2c_bus->dev;
 190         struct VENDOR_REQUEST_IN ven_req;
 191
 192         u8 saddr_len = 0;
 193         u8 _i2c_period = 0;
 194         u8 _i2c_nostop = 0;
 195         u8 _i2c_reserve = 0;
 196
 197         /* Get the I2C period, nostop and reserve parameters */
 198         _i2c_period = i2c_bus->i2c_period;
 199         _i2c_nostop = i2c_bus->i2c_nostop;
 200         _i2c_reserve = i2c_bus->i2c_reserve;
 201
 202         saddr_len = req_data->saddr_len;
 203
 204         /* Set wValue */
 205         if (saddr_len == 1)     /* need check saddr_len == 0  */
 206                 ven_req.wValue =
 207                     req_data->
 208                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 209                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 210         else
 211                 ven_req.wValue =
 212                     req_data->
 213                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 214                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 215
 216         /* set channel number */
 217         if (req_data->direction & I2C_M_RD) {
 218                 /* channel number, for read,spec required channel_num +4 */
 219                 ven_req.bRequest = i2c_bus->nr + 4;
 220         } else
 221                 ven_req.bRequest = i2c_bus->nr; /* channel number,  */
 222
 223         /* set index value */
 224         switch (saddr_len) {
 225         case 0:
 226                 ven_req.wIndex = 0;     /* need check */
 227                 break;
 228         case 1:
 229                 ven_req.wIndex = (req_data->saddr_dat & 0xff);
 230                 break;
 231         case 2:
 232                 ven_req.wIndex = req_data->saddr_dat;
 233                 break;
 234         }
 235
 236         /* set wLength value */
 237         ven_req.wLength = req_data->buf_size;
 238
 239         /* set bData value */
 240         ven_req.bData = 0;
 241
 242         /* set the direction */
 243         if (req_data->direction) {
 244                 ven_req.direction = USB_DIR_IN;
 245                 memset(req_data->p_buffer, 0x00, ven_req.wLength);
 246         } else
 247                 ven_req.direction = USB_DIR_OUT;
 248
 249         /* set the buffer for read / write */
 250         ven_req.pBuff = req_data->p_buffer;
 251
 252
 253         /* call common vendor command request */
 254         status = cx231xx_send_vendor_cmd(dev, &ven_req);
 255         if (status < 0) {
 256                 cx231xx_info
 257                     ("UsbInterface::sendCommand, failed with status -%d\n",
 258                      status);
 259         }
 260
 261         return status;
 262 }
 263 EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
 264
 265 /*
 266  * cx231xx_read_ctrl_reg()
 267  * reads data from the usb device specifying bRequest and wValue
 268  */
 269 int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
 270                           char *buf, int len)
 271 {
 272         u8 val = 0;
 273         int ret;
 274         int pipe = usb_rcvctrlpipe(dev->udev, 0);
 275
 276         if (dev->state & DEV_DISCONNECTED)
 277                 return -ENODEV;
 278
 279         if (len > URB_MAX_CTRL_SIZE)
 280                 return -EINVAL;
 281
 282         switch (len) {
 283         case 1:
 284                 val = ENABLE_ONE_BYTE;
 285                 break;
 286         case 2:
 287                 val = ENABLE_TWE_BYTE;
 288                 break;
 289         case 3:
 290                 val = ENABLE_THREE_BYTE;
 291                 break;
 292         case 4:
 293                 val = ENABLE_FOUR_BYTE;
 294                 break;
 295         default:
 296                 val = 0xFF;     /* invalid option */
 297         }
 298
 299         if (val == 0xFF)
 300                 return -EINVAL;
 301
 302         if (reg_debug) {
 303                 cx231xx_isocdbg("(pipe 0x%08x): "
 304                                 "IN:  %02x %02x %02x %02x %02x %02x %02x %02x ",
 305                                 pipe,
 306                                 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 307                                 req, 0, val,
 308                                 reg & 0xff, reg >> 8, len & 0xff, len >> 8);
 309         }
 310
 311         /* mutex_lock(&dev->ctrl_urb_lock);  */
 312         ret = usb_control_msg(dev->udev, pipe, req,
 313                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 314                               val, reg, dev->urb_buf, len, HZ);
 315         if (ret < 0) {
 316                 cx231xx_isocdbg(" failed!\n");
 317                 /* mutex_unlock(&dev->ctrl_urb_lock); */
 318                 return ret;
 319         }
 320
 321         if (len)
 322                 memcpy(buf, dev->urb_buf, len);
 323
 324         /* mutex_unlock(&dev->ctrl_urb_lock); */
 325
 326         if (reg_debug) {
 327                 int byte;
 328
 329                 cx231xx_isocdbg("<<<");
 330                 for (byte = 0; byte < len; byte++)
 331                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 332                 cx231xx_isocdbg("\n");
 333         }
 334
 335         return ret;
 336 }
 337
 338 int cx231xx_send_vendor_cmd(struct cx231xx *dev,
 339                                 struct VENDOR_REQUEST_IN *ven_req)
 340 {
 341         int ret;
 342         int pipe = 0;
 343
 344         if (dev->state & DEV_DISCONNECTED)
 345                 return -ENODEV;
 346
 347         if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
 348                 return -EINVAL;
 349
 350         if (ven_req->direction)
 351                 pipe = usb_rcvctrlpipe(dev->udev, 0);
 352         else
 353                 pipe = usb_sndctrlpipe(dev->udev, 0);
 354
 355         if (reg_debug) {
 356                 int byte;
 357
 358                 cx231xx_isocdbg("(pipe 0x%08x): "
 359                                 "OUT: %02x %02x %02x %04x %04x %04x >>>",
 360                                 pipe,
 361                                 ven_req->
 362                                 direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 363                                 ven_req->bRequest, 0, ven_req->wValue,
 364                                 ven_req->wIndex, ven_req->wLength);
 365
 366                 for (byte = 0; byte < ven_req->wLength; byte++)
 367                         cx231xx_isocdbg(" %02x",
 368                                         (unsigned char)ven_req->pBuff[byte]);
 369                 cx231xx_isocdbg("\n");
 370         }
 371
 372         /* mutex_lock(&dev->ctrl_urb_lock); */
 373         ret = usb_control_msg(dev->udev, pipe, ven_req->bRequest,
 374                               ven_req->
 375                               direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 376                               ven_req->wValue, ven_req->wIndex, ven_req->pBuff,
 377                               ven_req->wLength, HZ);
 378         /* mutex_unlock(&dev->ctrl_urb_lock); */
 379
 380         return ret;
 381 }
 382
 383 /*
 384  * cx231xx_write_ctrl_reg()
 385  * sends data to the usb device, specifying bRequest
 386  */
 387 int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
 388                            int len)
 389 {
 390         u8 val = 0;
 391         int ret;
 392         int pipe = usb_sndctrlpipe(dev->udev, 0);
 393
 394         if (dev->state & DEV_DISCONNECTED)
 395                 return -ENODEV;
 396
 397         if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
 398                 return -EINVAL;
 399
 400         switch (len) {
 401         case 1:
 402                 val = ENABLE_ONE_BYTE;
 403                 break;
 404         case 2:
 405                 val = ENABLE_TWE_BYTE;
 406                 break;
 407         case 3:
 408                 val = ENABLE_THREE_BYTE;
 409                 break;
 410         case 4:
 411                 val = ENABLE_FOUR_BYTE;
 412                 break;
 413         default:
 414                 val = 0xFF;     /* invalid option */
 415         }
 416
 417         if (val == 0xFF)
 418                 return -EINVAL;
 419
 420         if (reg_debug) {
 421                 int byte;
 422
 423                 cx231xx_isocdbg("(pipe 0x%08x): "
 424                         "OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
 425                         pipe,
 426                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 427                         req, 0, val, reg & 0xff,
 428                         reg >> 8, len & 0xff, len >> 8);
 429
 430                 for (byte = 0; byte < len; byte++)
 431                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 432                 cx231xx_isocdbg("\n");
 433         }
 434
 435         /* mutex_lock(&dev->ctrl_urb_lock); */
 436         memcpy(dev->urb_buf, buf, len);
 437         ret = usb_control_msg(dev->udev, pipe, req,
 438                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 439                               val, reg, dev->urb_buf, len, HZ);
 440         /* mutex_unlock(&dev->ctrl_urb_lock); */
 441
 442         return ret;
 443 }
 444
 445 /****************************************************************
 446 *           USB Alternate Setting functions                     *
 447 *****************************************************************/
 448
 449 int cx231xx_set_video_alternate(struct cx231xx *dev)
 450 {
 451         int errCode, prev_alt = dev->video_mode.alt;
 452         unsigned int min_pkt_size = dev->width * 2 + 4;
 453         u32 usb_interface_index = 0;
 454
 455         /* When image size is bigger than a certain value,
 456            the frame size should be increased, otherwise, only
 457            green screen will be received.
 458          */
 459         if (dev->width * 2 * dev->height > 720 * 240 * 2)
 460                 min_pkt_size *= 2;
 461
 462         if (dev->width > 360) {
 463                 /* resolutions: 720,704,640 */
 464                 dev->video_mode.alt = 3;
 465         } else if (dev->width > 180) {
 466                 /* resolutions: 360,352,320,240 */
 467                 dev->video_mode.alt = 2;
 468         } else if (dev->width > 0) {
 469                 /* resolutions: 180,176,160,128,88 */
 470                 dev->video_mode.alt = 1;
 471         } else {
 472                 /* Change to alt0 BULK to release USB bandwidth */
 473                 dev->video_mode.alt = 0;
 474         }
 475
 476         /* Get the correct video interface Index */
 477         usb_interface_index =
 478             dev->current_pcb_config.hs_config_info[0].interface_info.
 479             video_index + 1;
 480
 481         if (dev->video_mode.alt != prev_alt) {
 482                 cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
 483                                 min_pkt_size, dev->video_mode.alt);
 484                 dev->video_mode.max_pkt_size =
 485                     dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
 486                 cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
 487                                 dev->video_mode.alt,
 488                                 dev->video_mode.max_pkt_size);
 489                 cx231xx_info
 490                     (" setting alt %d with wMaxPktSize=%u , Interface = %d\n",
 491                      dev->video_mode.alt, dev->video_mode.max_pkt_size,
 492                      usb_interface_index);
 493                 errCode =
 494                     usb_set_interface(dev->udev, usb_interface_index,
 495                                       dev->video_mode.alt);
 496                 if (errCode < 0) {
 497                         cx231xx_errdev
 498                             ("cannot change alt number to %d (error=%i)\n",
 499                              dev->video_mode.alt, errCode);
 500                         return errCode;
 501                 }
 502         }
 503         return 0;
 504 }
 505
 506 int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
 507 {
 508         int status = 0;
 509         u32 usb_interface_index = 0;
 510         u32 max_pkt_size = 0;
 511
 512         switch (index) {
 513         case INDEX_TS1:
 514                 usb_interface_index =
 515                     dev->current_pcb_config.hs_config_info[0].interface_info.
 516                     ts1_index + 1;
 517                 dev->video_mode.alt = alt;
 518                 if (dev->ts1_mode.alt_max_pkt_size != NULL)
 519                         max_pkt_size = dev->ts1_mode.max_pkt_size =
 520                             dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
 521                 break;
 522         case INDEX_TS2:
 523                 usb_interface_index =
 524                     dev->current_pcb_config.hs_config_info[0].interface_info.
 525                     ts2_index + 1;
 526                 break;
 527         case INDEX_AUDIO:
 528                 usb_interface_index =
 529                     dev->current_pcb_config.hs_config_info[0].interface_info.
 530                     audio_index + 1;
 531                 dev->adev.alt = alt;
 532                 if (dev->adev.alt_max_pkt_size != NULL)
 533                         max_pkt_size = dev->adev.max_pkt_size =
 534                             dev->adev.alt_max_pkt_size[dev->adev.alt];
 535                 break;
 536         case INDEX_VIDEO:
 537                 usb_interface_index =
 538                     dev->current_pcb_config.hs_config_info[0].interface_info.
 539                     video_index + 1;
 540                 dev->video_mode.alt = alt;
 541                 if (dev->video_mode.alt_max_pkt_size != NULL)
 542                         max_pkt_size = dev->video_mode.max_pkt_size =
 543                             dev->video_mode.alt_max_pkt_size[dev->video_mode.
 544                                                              alt];
 545                 break;
 546         case INDEX_VANC:
 547                 usb_interface_index =
 548                     dev->current_pcb_config.hs_config_info[0].interface_info.
 549                     vanc_index + 1;
 550                 dev->vbi_mode.alt = alt;
 551                 if (dev->vbi_mode.alt_max_pkt_size != NULL)
 552                         max_pkt_size = dev->vbi_mode.max_pkt_size =
 553                             dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
 554                 break;
 555         case INDEX_HANC:
 556                 usb_interface_index =
 557                     dev->current_pcb_config.hs_config_info[0].interface_info.
 558                     hanc_index + 1;
 559                 dev->sliced_cc_mode.alt = alt;
 560                 if (dev->sliced_cc_mode.alt_max_pkt_size != NULL)
 561                         max_pkt_size = dev->sliced_cc_mode.max_pkt_size =
 562                             dev->sliced_cc_mode.alt_max_pkt_size[dev->
 563                                                                  sliced_cc_mode.
 564                                                                  alt];
 565                 break;
 566         default:
 567                 break;
 568         }
 569
 570         if (alt > 0 && max_pkt_size == 0) {
 571                 cx231xx_errdev
 572                 ("can't change interface %d alt no. to %d: Max. Pkt size = 0\n",
 573                 usb_interface_index, alt);
 574                 return -1;
 575         }
 576
 577         cx231xx_info
 578             (" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n",
 579              alt, max_pkt_size, usb_interface_index);
 580
 581         if (usb_interface_index > 0) {
 582                 status = usb_set_interface(dev->udev, usb_interface_index, alt);
 583                 if (status < 0) {
 584                         cx231xx_errdev
 585                         ("can't change interface %d alt no. to %d (err=%i)\n",
 586                         usb_interface_index, alt, status);
 587                         return status;
 588                 }
 589         }
 590
 591         return status;
 592 }
 593 EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
 594
 595 int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
 596 {
 597         int rc = 0;
 598
 599         if (!gpio)
 600                 return rc;
 601
 602         /* Send GPIO reset sequences specified at board entry */
 603         while (gpio->sleep >= 0) {
 604                 rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val);
 605                 if (rc < 0)
 606                         return rc;
 607
 608                 if (gpio->sleep > 0)
 609                         msleep(gpio->sleep);
 610
 611                 gpio++;
 612         }
 613         return rc;
 614 }
 615
 616 int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
 617 {
 618         if (dev->mode == set_mode)
 619                 return 0;
 620
 621         if (set_mode == CX231XX_SUSPEND) {
 622                 /* Set the chip in power saving mode */
 623                 dev->mode = set_mode;
 624         }
 625
 626         /* Resource is locked */
 627         if (dev->mode != CX231XX_SUSPEND)
 628                 return -EINVAL;
 629
 630         dev->mode = set_mode;
 631
 632         if (dev->mode == CX231XX_DIGITAL_MODE)
 633                 ;/* Set Digital power mode */
 634         else
 635                 ;/* Set Analog Power mode */
 636
 637         return 0;
 638 }
 639 EXPORT_SYMBOL_GPL(cx231xx_set_mode);
 640
 641 /*****************************************************************
 642 *                URB Streaming functions                         *
 643 ******************************************************************/
 644
 645 /*
 646  * IRQ callback, called by URB callback
 647  */
 648 static void cx231xx_irq_callback(struct urb *urb)
 649 {
 650         struct cx231xx_dmaqueue *dma_q = urb->context;
 651         struct cx231xx_video_mode *vmode =
 652             container_of(dma_q, struct cx231xx_video_mode, vidq);
 653         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 654         int rc, i;
 655
 656         switch (urb->status) {
 657         case 0:         /* success */
 658         case -ETIMEDOUT:        /* NAK */
 659                 break;
 660         case -ECONNRESET:       /* kill */
 661         case -ENOENT:
 662         case -ESHUTDOWN:
 663                 return;
 664         default:                /* error */
 665                 cx231xx_isocdbg("urb completition error %d.\n", urb->status);
 666                 break;
 667         }
 668
 669         /* Copy data from URB */
 670         spin_lock(&dev->video_mode.slock);
 671         rc = dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
 672         spin_unlock(&dev->video_mode.slock);
 673
 674         /* Reset urb buffers */
 675         for (i = 0; i < urb->number_of_packets; i++) {
 676                 urb->iso_frame_desc[i].status = 0;
 677                 urb->iso_frame_desc[i].actual_length = 0;
 678         }
 679         urb->status = 0;
 680
 681         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 682         if (urb->status) {
 683                 cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
 684                                 urb->status);
 685         }
 686 }
 687
 688 /*
 689  * Stop and Deallocate URBs
 690  */
 691 void cx231xx_uninit_isoc(struct cx231xx *dev)
 692 {
 693         struct urb *urb;
 694         int i;
 695
 696         cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
 697
 698         dev->video_mode.isoc_ctl.nfields = -1;
 699         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 700                 urb = dev->video_mode.isoc_ctl.urb[i];
 701                 if (urb) {
 702                         if (!irqs_disabled())
 703                                 usb_kill_urb(urb);
 704                         else
 705                                 usb_unlink_urb(urb);
 706
 707                         if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 708                                 usb_buffer_free(dev->udev,
 709                                                 urb->transfer_buffer_length,
 710                                                 dev->video_mode.isoc_ctl.
 711                                                 transfer_buffer[i],
 712                                                 urb->transfer_dma);
 713                         }
 714                         usb_free_urb(urb);
 715                         dev->video_mode.isoc_ctl.urb[i] = NULL;
 716                 }
 717                 dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
 718         }
 719
 720         kfree(dev->video_mode.isoc_ctl.urb);
 721         kfree(dev->video_mode.isoc_ctl.transfer_buffer);
 722
 723         dev->video_mode.isoc_ctl.urb = NULL;
 724         dev->video_mode.isoc_ctl.transfer_buffer = NULL;
 725         dev->video_mode.isoc_ctl.num_bufs = 0;
 726
 727         cx231xx_capture_start(dev, 0, Raw_Video);
 728 }
 729 EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
 730
 731 /*
 732  * Allocate URBs and start IRQ
 733  */
 734 int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
 735                       int num_bufs, int max_pkt_size,
 736                       int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
 737 {
 738         struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
 739         int i;
 740         int sb_size, pipe;
 741         struct urb *urb;
 742         int j, k;
 743         int rc;
 744
 745         cx231xx_isocdbg("cx231xx: called cx231xx_prepare_isoc\n");
 746
 747         dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
 748
 749         cx231xx_info("Setting Video mux to %d\n", dev->video_input);
 750         video_mux(dev, dev->video_input);
 751
 752         /* De-allocates all pending stuff */
 753         cx231xx_uninit_isoc(dev);
 754
 755         dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
 756         dev->video_mode.isoc_ctl.num_bufs = num_bufs;
 757         dma_q->pos = 0;
 758         dma_q->is_partial_line = 0;
 759         dma_q->last_sav = 0;
 760         dma_q->current_field = -1;
 761         dma_q->field1_done = 0;
 762         dma_q->lines_per_field = dev->height / 2;
 763         dma_q->bytes_left_in_line = dev->width << 1;
 764         dma_q->lines_completed = 0;
 765         for (i = 0; i < 8; i++)
 766                 dma_q->partial_buf[i] = 0;
 767
 768         dev->video_mode.isoc_ctl.urb =
 769             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 770         if (!dev->video_mode.isoc_ctl.urb) {
 771                 cx231xx_errdev("cannot alloc memory for usb buffers\n");
 772                 return -ENOMEM;
 773         }
 774
 775         dev->video_mode.isoc_ctl.transfer_buffer =
 776             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 777         if (!dev->video_mode.isoc_ctl.transfer_buffer) {
 778                 cx231xx_errdev("cannot allocate memory for usbtransfer\n");
 779                 kfree(dev->video_mode.isoc_ctl.urb);
 780                 return -ENOMEM;
 781         }
 782
 783         dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
 784         dev->video_mode.isoc_ctl.buf = NULL;
 785
 786         sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
 787
 788         /* allocate urbs and transfer buffers */
 789         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 790                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 791                 if (!urb) {
 792                         cx231xx_err("cannot alloc isoc_ctl.urb %i\n", i);
 793                         cx231xx_uninit_isoc(dev);
 794                         return -ENOMEM;
 795                 }
 796                 dev->video_mode.isoc_ctl.urb[i] = urb;
 797
 798                 dev->video_mode.isoc_ctl.transfer_buffer[i] =
 799                     usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL,
 800                                      &urb->transfer_dma);
 801                 if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 802                         cx231xx_err("unable to allocate %i bytes for transfer"
 803                                     " buffer %i%s\n",
 804                                     sb_size, i,
 805                                     in_interrupt() ? " while in int" : "");
 806                         cx231xx_uninit_isoc(dev);
 807                         return -ENOMEM;
 808                 }
 809                 memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
 810
 811                 pipe =
 812                     usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
 813
 814                 usb_fill_int_urb(urb, dev->udev, pipe,
 815                                  dev->video_mode.isoc_ctl.transfer_buffer[i],
 816                                  sb_size, cx231xx_irq_callback, dma_q, 1);
 817
 818                 urb->number_of_packets = max_packets;
 819                 urb->transfer_flags = URB_ISO_ASAP;
 820
 821                 k = 0;
 822                 for (j = 0; j < max_packets; j++) {
 823                         urb->iso_frame_desc[j].offset = k;
 824                         urb->iso_frame_desc[j].length =
 825                             dev->video_mode.isoc_ctl.max_pkt_size;
 826                         k += dev->video_mode.isoc_ctl.max_pkt_size;
 827                 }
 828         }
 829
 830         init_waitqueue_head(&dma_q->wq);
 831
 832         /* submit urbs and enables IRQ */
 833         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 834                 rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i],
 835                                     GFP_ATOMIC);
 836                 if (rc) {
 837                         cx231xx_err("submit of urb %i failed (error=%i)\n", i,
 838                                     rc);
 839                         cx231xx_uninit_isoc(dev);
 840                         return rc;
 841                 }
 842         }
 843
 844         cx231xx_capture_start(dev, 1, Raw_Video);
 845
 846         return 0;
 847 }
 848 EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
 849
 850 /*****************************************************************
 851 *             Device Init/UnInit functions                       *
 852 ******************************************************************/
 853 int cx231xx_dev_init(struct cx231xx *dev)
 854 {
 855         int errCode = 0;
 856
 857         /* Initialize I2C bus */
 858
 859         /* External Master 1 Bus */
 860         dev->i2c_bus[0].nr = 0;
 861         dev->i2c_bus[0].dev = dev;
 862         dev->i2c_bus[0].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 863         dev->i2c_bus[0].i2c_nostop = 0;
 864         dev->i2c_bus[0].i2c_reserve = 0;
 865
 866         /* External Master 2 Bus */
 867         dev->i2c_bus[1].nr = 1;
 868         dev->i2c_bus[1].dev = dev;
 869         dev->i2c_bus[1].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 870         dev->i2c_bus[1].i2c_nostop = 0;
 871         dev->i2c_bus[1].i2c_reserve = 0;
 872
 873         /* Internal Master 3 Bus */
 874         dev->i2c_bus[2].nr = 2;
 875         dev->i2c_bus[2].dev = dev;
 876         dev->i2c_bus[2].i2c_period = I2C_SPEED_400K;    /* 400kHz */
 877         dev->i2c_bus[2].i2c_nostop = 0;
 878         dev->i2c_bus[2].i2c_reserve = 0;
 879
 880         /* register I2C buses */
 881         cx231xx_i2c_register(&dev->i2c_bus[0]);
 882         cx231xx_i2c_register(&dev->i2c_bus[1]);
 883         cx231xx_i2c_register(&dev->i2c_bus[2]);
 884
 885         /* init hardware */
 886         /* Note : with out calling set power mode function,
 887         colibri can not be set up correctly */
 888         errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
 889         if (errCode < 0) {
 890                 cx231xx_errdev
 891                     ("%s: Failed to set Power - errCode [%d]!\n",
 892                      __func__, errCode);
 893                 return errCode;
 894         }
 895
 896         /* initialize Colibri block */
 897         errCode = cx231xx_colibri_init_super_block(dev, 0x23c);
 898         if (errCode < 0) {
 899                 cx231xx_errdev
 900                     ("%s: cx231xx_colibri init super block - errCode [%d]!\n",
 901                      __func__, errCode);
 902                 return errCode;
 903         }
 904         errCode = cx231xx_colibri_init_channels(dev);
 905         if (errCode < 0) {
 906                 cx231xx_errdev
 907                     ("%s: cx231xx_colibri init channels - errCode [%d]!\n",
 908                      __func__, errCode);
 909                 return errCode;
 910         }
 911
 912         /* Set DIF in By pass mode */
 913         errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
 914         if (errCode < 0) {
 915                 cx231xx_errdev
 916                     ("%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
 917                      __func__, errCode);
 918                 return errCode;
 919         }
 920
 921         /* flatiron related functions */
 922         errCode = cx231xx_flatiron_initialize(dev);
 923         if (errCode < 0) {
 924                 cx231xx_errdev
 925                     ("%s: cx231xx_flatiron initialize - errCode [%d]!\n",
 926                      __func__, errCode);
 927                 return errCode;
 928         }
 929
 930         /* init control pins */
 931         errCode = cx231xx_init_ctrl_pin_status(dev);
 932         if (errCode < 0) {
 933                 cx231xx_errdev("%s: cx231xx_init ctrl pins - errCode [%d]!\n",
 934                                __func__, errCode);
 935                 return errCode;
 936         }
 937
 938         /* set AGC mode to Analog */
 939         errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
 940         if (errCode < 0) {
 941                 cx231xx_errdev
 942                     ("%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
 943                      __func__, errCode);
 944                 return errCode;
 945         }
 946
 947         /* set all alternate settings to zero initially */
 948         cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
 949         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
 950         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
 951         if (dev->board.has_dvb)
 952                 cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
 953
 954         /* set the I2C master port to 3 on channel 1 */
 955         errCode = cx231xx_enable_i2c_for_tuner(dev, I2C_3);
 956
 957         return errCode;
 958 }
 959 EXPORT_SYMBOL_GPL(cx231xx_dev_init);
 960
 961 void cx231xx_dev_uninit(struct cx231xx *dev)
 962 {
 963         /* Un Initialize I2C bus */
 964         cx231xx_i2c_unregister(&dev->i2c_bus[2]);
 965         cx231xx_i2c_unregister(&dev->i2c_bus[1]);
 966         cx231xx_i2c_unregister(&dev->i2c_bus[0]);
 967 }
 968 EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
 969
 970 /*****************************************************************
 971 *              G P I O related functions                         *
 972 ******************************************************************/
 973 int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 * gpio_val,
 974                           u8 len, u8 request, u8 direction)
 975 {
 976         int status = 0;
 977         struct VENDOR_REQUEST_IN ven_req;
 978
 979         /* Set wValue */
 980         ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff);
 981
 982         /* set request */
 983         if (!request) {
 984                 if (direction)
 985                         ven_req.bRequest = VRT_GET_GPIO;        /* 0x8 gpio */
 986                 else
 987                         ven_req.bRequest = VRT_SET_GPIO;        /* 0x9 gpio */
 988         } else {
 989                 if (direction)
 990                         ven_req.bRequest = VRT_GET_GPIE;        /* 0xa gpie */
 991                 else
 992                         ven_req.bRequest = VRT_SET_GPIE;        /* 0xb gpie */
 993         }
 994
 995         /* set index value */
 996         ven_req.wIndex = (u16) (gpio_bit & 0xffff);
 997
 998         /* set wLength value */
 999         ven_req.wLength = len;
1000
1001         /* set bData value */
1002         ven_req.bData = 0;
1003
1004         /* set the buffer for read / write */
1005         ven_req.pBuff = gpio_val;
1006
1007         /* set the direction */
1008         if (direction) {
1009                 ven_req.direction = USB_DIR_IN;
1010                 memset(ven_req.pBuff, 0x00, ven_req.wLength);
1011         } else
1012                 ven_req.direction = USB_DIR_OUT;
1013
1014
1015         /* call common vendor command request */
1016         status = cx231xx_send_vendor_cmd(dev, &ven_req);
1017         if (status < 0) {
1018                 cx231xx_info
1019                     ("UsbInterface::sendCommand, failed with status -%d\n",
1020                      status);
1021         }
1022
1023         return status;
1024 }
1025 EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
1026
1027 /*****************************************************************
1028  *    C O N T R O L - Register R E A D / W R I T E functions     *
1029  *****************************************************************/
1030 int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
1031 {
1032         u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
1033         u32 tmp = 0;
1034         int status = 0;
1035
1036         status =
1037             cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4);
1038         if (status < 0)
1039                 return status;
1040
1041         tmp = *((u32 *) value);
1042         tmp |= mode;
1043
1044         value[0] = (u8) tmp;
1045         value[1] = (u8) (tmp >> 8);
1046         value[2] = (u8) (tmp >> 16);
1047         value[3] = (u8) (tmp >> 24);
1048
1049         status =
1050             cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4);
1051
1052         return status;
1053 }
1054
1055 /*****************************************************************
1056  *            I 2 C Internal C O N T R O L   functions           *
1057  *****************************************************************/
1058 int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1059                           u8 saddr_len, u32 *data, u8 data_len)
1060 {
1061         int status = 0;
1062         struct cx231xx_i2c_xfer_data req_data;
1063         u8 value[4] = { 0, 0, 0, 0 };
1064
1065         if (saddr_len == 0)
1066                 saddr = 0;
1067         else if (saddr_len == 0)
1068                 saddr &= 0xff;
1069
1070         /* prepare xfer_data struct */
1071         req_data.dev_addr = dev_addr >> 1;
1072         req_data.direction = I2C_M_RD;
1073         req_data.saddr_len = saddr_len;
1074         req_data.saddr_dat = saddr;
1075         req_data.buf_size = data_len;
1076         req_data.p_buffer = (u8 *) value;
1077
1078         /* usb send command */
1079         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1080
1081         if (status >= 0) {
1082                 /* Copy the data read back to main buffer */
1083                 if (data_len == 1)
1084                         *data = value[0];
1085                 else
1086                         *data =
1087                             value[0] | value[1] << 8 | value[2] << 16 | value[3]
1088                             << 24;
1089         }
1090
1091         return status;
1092 }
1093
1094 int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1095                            u8 saddr_len, u32 data, u8 data_len)
1096 {
1097         int status = 0;
1098         u8 value[4] = { 0, 0, 0, 0 };
1099         struct cx231xx_i2c_xfer_data req_data;
1100
1101         value[0] = (u8) data;
1102         value[1] = (u8) (data >> 8);
1103         value[2] = (u8) (data >> 16);
1104         value[3] = (u8) (data >> 24);
1105
1106         if (saddr_len == 0)
1107                 saddr = 0;
1108         else if (saddr_len == 0)
1109                 saddr &= 0xff;
1110
1111         /* prepare xfer_data struct */
1112         req_data.dev_addr = dev_addr >> 1;
1113         req_data.direction = 0;
1114         req_data.saddr_len = saddr_len;
1115         req_data.saddr_dat = saddr;
1116         req_data.buf_size = data_len;
1117         req_data.p_buffer = value;
1118
1119         /* usb send command */
1120         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1121
1122         return status;
1123 }
1124
1125 int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
1126                            u16 register_address, u8 bit_start, u8 bit_end,
1127                            u32 value)
1128 {
1129         int status = 0;
1130         u32 tmp;
1131         u32 mask = 0;
1132         int i;
1133
1134         if (bit_start > (size - 1) || bit_end > (size - 1))
1135                 return -1;
1136
1137         if (size == 8) {
1138                 status =
1139                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1140                                           &tmp, 1);
1141         } else {
1142                 status =
1143                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1144                                           &tmp, 4);
1145         }
1146
1147         if (status < 0)
1148                 return status;
1149
1150         mask = 1 << bit_end;
1151         for (i = bit_end; i > bit_start && i > 0; i--)
1152                 mask = mask + (1 << (i - 1));
1153
1154         value <<= bit_start;
1155
1156         if (size == 8) {
1157                 tmp &= ~mask;
1158                 tmp |= value;
1159                 tmp &= 0xff;
1160                 status =
1161                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1162                                            tmp, 1);
1163         } else {
1164                 tmp &= ~mask;
1165                 tmp |= value;
1166                 status =
1167                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1168                                            tmp, 4);
1169         }
1170
1171         return status;
1172 }
1173
1174 int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
1175                                         u16 saddr, u32 mask, u32 value)
1176 {
1177         u32 temp;
1178         int status = 0;
1179
1180         status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
1181
1182         if (status < 0)
1183                 return status;
1184
1185         temp &= ~mask;
1186         temp |= value;
1187
1188         status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
1189
1190         return status;
1191 }
1192
1193 u32 cx231xx_set_field(u32 field_mask, u32 data)
1194 {
1195         u32 temp;
1196
1197         for (temp = field_mask; (temp & 1) == 0; temp >>= 1)
1198                 data <<= 1;
1199
1200         return data;
1201 }