git.oblomov.eu Git - 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 #define cx231xx_isocdbg(fmt, arg...) do {\
  58         if (core_debug) \
  59                 printk(KERN_INFO "%s %s :"fmt, \
  60                          dev->name, __func__ , ##arg); } while (0)
  61
  62 /*****************************************************************
  63 *             Device control list functions                                      *
  64 ******************************************************************/
  65
  66 static LIST_HEAD(cx231xx_devlist);
  67 static DEFINE_MUTEX(cx231xx_devlist_mutex);
  68
  69 struct cx231xx *cx231xx_get_device(int minor,
  70                                    enum v4l2_buf_type *fh_type, int *has_radio)
  71 {
  72         struct cx231xx *h, *dev = NULL;
  73
  74         *fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
  75         *has_radio = 0;
  76
  77         mutex_lock(&cx231xx_devlist_mutex);
  78         list_for_each_entry(h, &cx231xx_devlist, devlist) {
  79                 if (h->vdev->minor == minor)
  80                         dev = h;
  81                 if (h->vbi_dev->minor == minor) {
  82                         dev = h;
  83                         *fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
  84                 }
  85                 if (h->radio_dev && h->radio_dev->minor == minor) {
  86                         dev = h;
  87                         *has_radio = 1;
  88                 }
  89         }
  90         mutex_unlock(&cx231xx_devlist_mutex);
  91
  92         return dev;
  93 }
  94
  95 /*
  96  * cx231xx_realease_resources()
  97  * unregisters the v4l2,i2c and usb devices
  98  * called when the device gets disconected or at module unload
  99 */
 100 void cx231xx_remove_from_devlist(struct cx231xx *dev)
 101 {
 102         mutex_lock(&cx231xx_devlist_mutex);
 103         list_del(&dev->devlist);
 104         mutex_unlock(&cx231xx_devlist_mutex);
 105 };
 106
 107 void cx231xx_add_into_devlist(struct cx231xx *dev)
 108 {
 109         mutex_lock(&cx231xx_devlist_mutex);
 110         list_add_tail(&dev->devlist, &cx231xx_devlist);
 111         mutex_unlock(&cx231xx_devlist_mutex);
 112 };
 113
 114 static LIST_HEAD(cx231xx_extension_devlist);
 115 static DEFINE_MUTEX(cx231xx_extension_devlist_lock);
 116
 117 int cx231xx_register_extension(struct cx231xx_ops *ops)
 118 {
 119         struct cx231xx *dev = NULL;
 120
 121         mutex_lock(&cx231xx_devlist_mutex);
 122         mutex_lock(&cx231xx_extension_devlist_lock);
 123         list_add_tail(&ops->next, &cx231xx_extension_devlist);
 124         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 125                 if (dev)
 126                         ops->init(dev);
 127         }
 128         printk(KERN_INFO DRIVER_NAME ": %s initialized\n", ops->name);
 129         mutex_unlock(&cx231xx_extension_devlist_lock);
 130         mutex_unlock(&cx231xx_devlist_mutex);
 131         return 0;
 132 }
 133 EXPORT_SYMBOL(cx231xx_register_extension);
 134
 135 void cx231xx_unregister_extension(struct cx231xx_ops *ops)
 136 {
 137         struct cx231xx *dev = NULL;
 138
 139         mutex_lock(&cx231xx_devlist_mutex);
 140         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 141                 if (dev)
 142                         ops->fini(dev);
 143         }
 144
 145         mutex_lock(&cx231xx_extension_devlist_lock);
 146         printk(KERN_INFO DRIVER_NAME ": %s removed\n", ops->name);
 147         list_del(&ops->next);
 148         mutex_unlock(&cx231xx_extension_devlist_lock);
 149         mutex_unlock(&cx231xx_devlist_mutex);
 150 }
 151 EXPORT_SYMBOL(cx231xx_unregister_extension);
 152
 153 void cx231xx_init_extension(struct cx231xx *dev)
 154 {
 155         struct cx231xx_ops *ops = NULL;
 156
 157         mutex_lock(&cx231xx_extension_devlist_lock);
 158         if (!list_empty(&cx231xx_extension_devlist)) {
 159                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 160                         if (ops->init)
 161                                 ops->init(dev);
 162                 }
 163         }
 164         mutex_unlock(&cx231xx_extension_devlist_lock);
 165 }
 166
 167 void cx231xx_close_extension(struct cx231xx *dev)
 168 {
 169         struct cx231xx_ops *ops = NULL;
 170
 171         mutex_lock(&cx231xx_extension_devlist_lock);
 172         if (!list_empty(&cx231xx_extension_devlist)) {
 173                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 174                         if (ops->fini)
 175                                 ops->fini(dev);
 176                 }
 177         }
 178         mutex_unlock(&cx231xx_extension_devlist_lock);
 179 }
 180
 181 /****************************************************************
 182 *               U S B related functions                         *
 183 *****************************************************************/
 184 int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
 185                              struct cx231xx_i2c_xfer_data *req_data)
 186 {
 187         int status = 0;
 188         struct cx231xx *dev = i2c_bus->dev;
 189         struct VENDOR_REQUEST_IN ven_req;
 190
 191         u8 saddr_len = 0;
 192         u8 _i2c_period = 0;
 193         u8 _i2c_nostop = 0;
 194         u8 _i2c_reserve = 0;
 195
 196         /* Get the I2C period, nostop and reserve parameters */
 197         _i2c_period = i2c_bus->i2c_period;
 198         _i2c_nostop = i2c_bus->i2c_nostop;
 199         _i2c_reserve = i2c_bus->i2c_reserve;
 200
 201         saddr_len = req_data->saddr_len;
 202
 203         /* Set wValue */
 204         if (saddr_len == 1)     /* need check saddr_len == 0  */
 205                 ven_req.wValue =
 206                     req_data->
 207                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 208                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 209         else
 210                 ven_req.wValue =
 211                     req_data->
 212                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 213                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 214
 215         /* set channel number */
 216         if (req_data->direction & I2C_M_RD) {
 217                 /* channel number, for read,spec required channel_num +4 */
 218                 ven_req.bRequest = i2c_bus->nr + 4;
 219         } else
 220                 ven_req.bRequest = i2c_bus->nr; /* channel number,  */
 221
 222         /* set index value */
 223         switch (saddr_len) {
 224         case 0:
 225                 ven_req.wIndex = 0;     /* need check */
 226                 break;
 227         case 1:
 228                 ven_req.wIndex = (req_data->saddr_dat & 0xff);
 229                 break;
 230         case 2:
 231                 ven_req.wIndex = req_data->saddr_dat;
 232                 break;
 233         }
 234
 235         /* set wLength value */
 236         ven_req.wLength = req_data->buf_size;
 237
 238         /* set bData value */
 239         ven_req.bData = 0;
 240
 241         /* set the direction */
 242         if (req_data->direction) {
 243                 ven_req.direction = USB_DIR_IN;
 244                 memset(req_data->p_buffer, 0x00, ven_req.wLength);
 245         } else
 246                 ven_req.direction = USB_DIR_OUT;
 247
 248         /* set the buffer for read / write */
 249         ven_req.pBuff = req_data->p_buffer;
 250
 251
 252         /* call common vendor command request */
 253         status = cx231xx_send_vendor_cmd(dev, &ven_req);
 254         if (status < 0) {
 255                 cx231xx_info
 256                     ("UsbInterface::sendCommand, failed with status -%d\n",
 257                      status);
 258         }
 259
 260         return status;
 261 }
 262 EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
 263
 264 /*
 265  * cx231xx_read_ctrl_reg()
 266  * reads data from the usb device specifying bRequest and wValue
 267  */
 268 int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
 269                           char *buf, int len)
 270 {
 271         u8 val = 0;
 272         int ret;
 273         int pipe = usb_rcvctrlpipe(dev->udev, 0);
 274
 275         if (dev->state & DEV_DISCONNECTED)
 276                 return -ENODEV;
 277
 278         if (len > URB_MAX_CTRL_SIZE)
 279                 return -EINVAL;
 280
 281         switch (len) {
 282         case 1:
 283                 val = ENABLE_ONE_BYTE;
 284                 break;
 285         case 2:
 286                 val = ENABLE_TWE_BYTE;
 287                 break;
 288         case 3:
 289                 val = ENABLE_THREE_BYTE;
 290                 break;
 291         case 4:
 292                 val = ENABLE_FOUR_BYTE;
 293                 break;
 294         default:
 295                 val = 0xFF;     /* invalid option */
 296         }
 297
 298         if (val == 0xFF)
 299                 return -EINVAL;
 300
 301         if (reg_debug) {
 302                 cx231xx_isocdbg("(pipe 0x%08x): "
 303                                 "IN:  %02x %02x %02x %02x %02x %02x %02x %02x ",
 304                                 pipe,
 305                                 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 306                                 req, 0, val,
 307                                 reg & 0xff, reg >> 8, len & 0xff, len >> 8);
 308         }
 309
 310         mutex_lock(&dev->ctrl_urb_lock);
 311         ret = usb_control_msg(dev->udev, pipe, req,
 312                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 313                               val, reg, dev->urb_buf, len, HZ);
 314         if (ret < 0) {
 315                 cx231xx_isocdbg(" failed!\n");
 316                 /* mutex_unlock(&dev->ctrl_urb_lock); */
 317                 return ret;
 318         }
 319
 320         if (len)
 321                 memcpy(buf, dev->urb_buf, len);
 322
 323         mutex_unlock(&dev->ctrl_urb_lock);
 324
 325         if (reg_debug) {
 326                 int byte;
 327
 328                 cx231xx_isocdbg("<<<");
 329                 for (byte = 0; byte < len; byte++)
 330                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 331                 cx231xx_isocdbg("\n");
 332         }
 333
 334         return ret;
 335 }
 336
 337 int cx231xx_send_vendor_cmd(struct cx231xx *dev,
 338                                 struct VENDOR_REQUEST_IN *ven_req)
 339 {
 340         int ret;
 341         int pipe = 0;
 342
 343         if (dev->state & DEV_DISCONNECTED)
 344                 return -ENODEV;
 345
 346         if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
 347                 return -EINVAL;
 348
 349         if (ven_req->direction)
 350                 pipe = usb_rcvctrlpipe(dev->udev, 0);
 351         else
 352                 pipe = usb_sndctrlpipe(dev->udev, 0);
 353
 354         if (reg_debug) {
 355                 int byte;
 356
 357                 cx231xx_isocdbg("(pipe 0x%08x): "
 358                                 "OUT: %02x %02x %02x %04x %04x %04x >>>",
 359                                 pipe,
 360                                 ven_req->
 361                                 direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 362                                 ven_req->bRequest, 0, ven_req->wValue,
 363                                 ven_req->wIndex, ven_req->wLength);
 364
 365                 for (byte = 0; byte < ven_req->wLength; byte++)
 366                         cx231xx_isocdbg(" %02x",
 367                                         (unsigned char)ven_req->pBuff[byte]);
 368                 cx231xx_isocdbg("\n");
 369         }
 370
 371         mutex_lock(&dev->ctrl_urb_lock);
 372         ret = usb_control_msg(dev->udev, pipe, ven_req->bRequest,
 373                               ven_req->
 374                               direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 375                               ven_req->wValue, ven_req->wIndex, ven_req->pBuff,
 376                               ven_req->wLength, HZ);
 377         mutex_unlock(&dev->ctrl_urb_lock);
 378
 379         return ret;
 380 }
 381
 382 /*
 383  * cx231xx_write_ctrl_reg()
 384  * sends data to the usb device, specifying bRequest
 385  */
 386 int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
 387                            int len)
 388 {
 389         u8 val = 0;
 390         int ret;
 391         int pipe = usb_sndctrlpipe(dev->udev, 0);
 392
 393         if (dev->state & DEV_DISCONNECTED)
 394                 return -ENODEV;
 395
 396         if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
 397                 return -EINVAL;
 398
 399         switch (len) {
 400         case 1:
 401                 val = ENABLE_ONE_BYTE;
 402                 break;
 403         case 2:
 404                 val = ENABLE_TWE_BYTE;
 405                 break;
 406         case 3:
 407                 val = ENABLE_THREE_BYTE;
 408                 break;
 409         case 4:
 410                 val = ENABLE_FOUR_BYTE;
 411                 break;
 412         default:
 413                 val = 0xFF;     /* invalid option */
 414         }
 415
 416         if (val == 0xFF)
 417                 return -EINVAL;
 418
 419         if (reg_debug) {
 420                 int byte;
 421
 422                 cx231xx_isocdbg("(pipe 0x%08x): "
 423                         "OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
 424                         pipe,
 425                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 426                         req, 0, val, reg & 0xff,
 427                         reg >> 8, len & 0xff, len >> 8);
 428
 429                 for (byte = 0; byte < len; byte++)
 430                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 431                 cx231xx_isocdbg("\n");
 432         }
 433
 434         mutex_lock(&dev->ctrl_urb_lock);
 435         memcpy(dev->urb_buf, buf, len);
 436         ret = usb_control_msg(dev->udev, pipe, req,
 437                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 438                               val, reg, dev->urb_buf, len, HZ);
 439         mutex_unlock(&dev->ctrl_urb_lock);
 440
 441         return ret;
 442 }
 443
 444 /****************************************************************
 445 *           USB Alternate Setting functions                     *
 446 *****************************************************************/
 447
 448 int cx231xx_set_video_alternate(struct cx231xx *dev)
 449 {
 450         int errCode, prev_alt = dev->video_mode.alt;
 451         unsigned int min_pkt_size = dev->width * 2 + 4;
 452         u32 usb_interface_index = 0;
 453
 454         /* When image size is bigger than a certain value,
 455            the frame size should be increased, otherwise, only
 456            green screen will be received.
 457          */
 458         if (dev->width * 2 * dev->height > 720 * 240 * 2)
 459                 min_pkt_size *= 2;
 460
 461         if (dev->width > 360) {
 462                 /* resolutions: 720,704,640 */
 463                 dev->video_mode.alt = 3;
 464         } else if (dev->width > 180) {
 465                 /* resolutions: 360,352,320,240 */
 466                 dev->video_mode.alt = 2;
 467         } else if (dev->width > 0) {
 468                 /* resolutions: 180,176,160,128,88 */
 469                 dev->video_mode.alt = 1;
 470         } else {
 471                 /* Change to alt0 BULK to release USB bandwidth */
 472                 dev->video_mode.alt = 0;
 473         }
 474
 475         /* Get the correct video interface Index */
 476         usb_interface_index =
 477             dev->current_pcb_config.hs_config_info[0].interface_info.
 478             video_index + 1;
 479
 480         if (dev->video_mode.alt != prev_alt) {
 481                 cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
 482                                 min_pkt_size, dev->video_mode.alt);
 483                 dev->video_mode.max_pkt_size =
 484                     dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
 485                 cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
 486                                 dev->video_mode.alt,
 487                                 dev->video_mode.max_pkt_size);
 488                 cx231xx_info
 489                     (" setting alt %d with wMaxPktSize=%u , Interface = %d\n",
 490                      dev->video_mode.alt, dev->video_mode.max_pkt_size,
 491                      usb_interface_index);
 492                 errCode =
 493                     usb_set_interface(dev->udev, usb_interface_index,
 494                                       dev->video_mode.alt);
 495                 if (errCode < 0) {
 496                         cx231xx_errdev
 497                             ("cannot change alt number to %d (error=%i)\n",
 498                              dev->video_mode.alt, errCode);
 499                         return errCode;
 500                 }
 501         }
 502         return 0;
 503 }
 504
 505 int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
 506 {
 507         int status = 0;
 508         u32 usb_interface_index = 0;
 509         u32 max_pkt_size = 0;
 510
 511         switch (index) {
 512         case INDEX_TS1:
 513                 usb_interface_index =
 514                     dev->current_pcb_config.hs_config_info[0].interface_info.
 515                     ts1_index + 1;
 516                 dev->video_mode.alt = alt;
 517                 if (dev->ts1_mode.alt_max_pkt_size != NULL)
 518                         max_pkt_size = dev->ts1_mode.max_pkt_size =
 519                             dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
 520                 break;
 521         case INDEX_TS2:
 522                 usb_interface_index =
 523                     dev->current_pcb_config.hs_config_info[0].interface_info.
 524                     ts2_index + 1;
 525                 break;
 526         case INDEX_AUDIO:
 527                 usb_interface_index =
 528                     dev->current_pcb_config.hs_config_info[0].interface_info.
 529                     audio_index + 1;
 530                 dev->adev.alt = alt;
 531                 if (dev->adev.alt_max_pkt_size != NULL)
 532                         max_pkt_size = dev->adev.max_pkt_size =
 533                             dev->adev.alt_max_pkt_size[dev->adev.alt];
 534                 break;
 535         case INDEX_VIDEO:
 536                 usb_interface_index =
 537                     dev->current_pcb_config.hs_config_info[0].interface_info.
 538                     video_index + 1;
 539                 dev->video_mode.alt = alt;
 540                 if (dev->video_mode.alt_max_pkt_size != NULL)
 541                         max_pkt_size = dev->video_mode.max_pkt_size =
 542                             dev->video_mode.alt_max_pkt_size[dev->video_mode.
 543                                                              alt];
 544                 break;
 545         case INDEX_VANC:
 546                 usb_interface_index =
 547                     dev->current_pcb_config.hs_config_info[0].interface_info.
 548                     vanc_index + 1;
 549                 dev->vbi_mode.alt = alt;
 550                 if (dev->vbi_mode.alt_max_pkt_size != NULL)
 551                         max_pkt_size = dev->vbi_mode.max_pkt_size =
 552                             dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
 553                 break;
 554         case INDEX_HANC:
 555                 usb_interface_index =
 556                     dev->current_pcb_config.hs_config_info[0].interface_info.
 557                     hanc_index + 1;
 558                 dev->sliced_cc_mode.alt = alt;
 559                 if (dev->sliced_cc_mode.alt_max_pkt_size != NULL)
 560                         max_pkt_size = dev->sliced_cc_mode.max_pkt_size =
 561                             dev->sliced_cc_mode.alt_max_pkt_size[dev->
 562                                                                  sliced_cc_mode.
 563                                                                  alt];
 564                 break;
 565         default:
 566                 break;
 567         }
 568
 569         if (alt > 0 && max_pkt_size == 0) {
 570                 cx231xx_errdev
 571                 ("can't change interface %d alt no. to %d: Max. Pkt size = 0\n",
 572                 usb_interface_index, alt);
 573                 return -1;
 574         }
 575
 576         cx231xx_info
 577             (" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n",
 578              alt, max_pkt_size, usb_interface_index);
 579
 580         if (usb_interface_index > 0) {
 581                 status = usb_set_interface(dev->udev, usb_interface_index, alt);
 582                 if (status < 0) {
 583                         cx231xx_errdev
 584                         ("can't change interface %d alt no. to %d (err=%i)\n",
 585                         usb_interface_index, alt, status);
 586                         return status;
 587                 }
 588         }
 589
 590         return status;
 591 }
 592 EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
 593
 594 int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
 595 {
 596         int rc = 0;
 597
 598         if (!gpio)
 599                 return rc;
 600
 601         /* Send GPIO reset sequences specified at board entry */
 602         while (gpio->sleep >= 0) {
 603                 rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val);
 604                 if (rc < 0)
 605                         return rc;
 606
 607                 if (gpio->sleep > 0)
 608                         msleep(gpio->sleep);
 609
 610                 gpio++;
 611         }
 612         return rc;
 613 }
 614
 615 int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
 616 {
 617         if (dev->mode == set_mode)
 618                 return 0;
 619
 620         if (set_mode == CX231XX_SUSPEND) {
 621                 /* Set the chip in power saving mode */
 622                 dev->mode = set_mode;
 623         }
 624
 625         /* Resource is locked */
 626         if (dev->mode != CX231XX_SUSPEND)
 627                 return -EINVAL;
 628
 629         dev->mode = set_mode;
 630
 631         if (dev->mode == CX231XX_DIGITAL_MODE)
 632                 ;/* Set Digital power mode */
 633         else
 634                 ;/* Set Analog Power mode */
 635
 636         return 0;
 637 }
 638 EXPORT_SYMBOL_GPL(cx231xx_set_mode);
 639
 640 /*****************************************************************
 641 *                URB Streaming functions                         *
 642 ******************************************************************/
 643
 644 /*
 645  * IRQ callback, called by URB callback
 646  */
 647 static void cx231xx_irq_callback(struct urb *urb)
 648 {
 649         struct cx231xx_dmaqueue *dma_q = urb->context;
 650         struct cx231xx_video_mode *vmode =
 651             container_of(dma_q, struct cx231xx_video_mode, vidq);
 652         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 653         int rc, i;
 654
 655         switch (urb->status) {
 656         case 0:         /* success */
 657         case -ETIMEDOUT:        /* NAK */
 658                 break;
 659         case -ECONNRESET:       /* kill */
 660         case -ENOENT:
 661         case -ESHUTDOWN:
 662                 return;
 663         default:                /* error */
 664                 cx231xx_isocdbg("urb completition error %d.\n", urb->status);
 665                 break;
 666         }
 667
 668         /* Copy data from URB */
 669         spin_lock(&dev->video_mode.slock);
 670         rc = dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
 671         spin_unlock(&dev->video_mode.slock);
 672
 673         /* Reset urb buffers */
 674         for (i = 0; i < urb->number_of_packets; i++) {
 675                 urb->iso_frame_desc[i].status = 0;
 676                 urb->iso_frame_desc[i].actual_length = 0;
 677         }
 678         urb->status = 0;
 679
 680         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 681         if (urb->status) {
 682                 cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
 683                                 urb->status);
 684         }
 685 }
 686
 687 /*
 688  * Stop and Deallocate URBs
 689  */
 690 void cx231xx_uninit_isoc(struct cx231xx *dev)
 691 {
 692         struct urb *urb;
 693         int i;
 694
 695         cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
 696
 697         dev->video_mode.isoc_ctl.nfields = -1;
 698         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 699                 urb = dev->video_mode.isoc_ctl.urb[i];
 700                 if (urb) {
 701                         if (!irqs_disabled())
 702                                 usb_kill_urb(urb);
 703                         else
 704                                 usb_unlink_urb(urb);
 705
 706                         if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 707                                 usb_buffer_free(dev->udev,
 708                                                 urb->transfer_buffer_length,
 709                                                 dev->video_mode.isoc_ctl.
 710                                                 transfer_buffer[i],
 711                                                 urb->transfer_dma);
 712                         }
 713                         usb_free_urb(urb);
 714                         dev->video_mode.isoc_ctl.urb[i] = NULL;
 715                 }
 716                 dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
 717         }
 718
 719         kfree(dev->video_mode.isoc_ctl.urb);
 720         kfree(dev->video_mode.isoc_ctl.transfer_buffer);
 721
 722         dev->video_mode.isoc_ctl.urb = NULL;
 723         dev->video_mode.isoc_ctl.transfer_buffer = NULL;
 724         dev->video_mode.isoc_ctl.num_bufs = 0;
 725
 726         cx231xx_capture_start(dev, 0, Raw_Video);
 727 }
 728 EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
 729
 730 /*
 731  * Allocate URBs and start IRQ
 732  */
 733 int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
 734                       int num_bufs, int max_pkt_size,
 735                       int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
 736 {
 737         struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
 738         int i;
 739         int sb_size, pipe;
 740         struct urb *urb;
 741         int j, k;
 742         int rc;
 743
 744         cx231xx_isocdbg("cx231xx: called cx231xx_prepare_isoc\n");
 745
 746         dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
 747
 748         cx231xx_info("Setting Video mux to %d\n", dev->video_input);
 749         video_mux(dev, dev->video_input);
 750
 751         /* De-allocates all pending stuff */
 752         cx231xx_uninit_isoc(dev);
 753
 754         dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
 755         dev->video_mode.isoc_ctl.num_bufs = num_bufs;
 756         dma_q->pos = 0;
 757         dma_q->is_partial_line = 0;
 758         dma_q->last_sav = 0;
 759         dma_q->current_field = -1;
 760         dma_q->field1_done = 0;
 761         dma_q->lines_per_field = dev->height / 2;
 762         dma_q->bytes_left_in_line = dev->width << 1;
 763         dma_q->lines_completed = 0;
 764         for (i = 0; i < 8; i++)
 765                 dma_q->partial_buf[i] = 0;
 766
 767         dev->video_mode.isoc_ctl.urb =
 768             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 769         if (!dev->video_mode.isoc_ctl.urb) {
 770                 cx231xx_errdev("cannot alloc memory for usb buffers\n");
 771                 return -ENOMEM;
 772         }
 773
 774         dev->video_mode.isoc_ctl.transfer_buffer =
 775             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 776         if (!dev->video_mode.isoc_ctl.transfer_buffer) {
 777                 cx231xx_errdev("cannot allocate memory for usbtransfer\n");
 778                 kfree(dev->video_mode.isoc_ctl.urb);
 779                 return -ENOMEM;
 780         }
 781
 782         dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
 783         dev->video_mode.isoc_ctl.buf = NULL;
 784
 785         sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
 786
 787         /* allocate urbs and transfer buffers */
 788         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 789                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 790                 if (!urb) {
 791                         cx231xx_err("cannot alloc isoc_ctl.urb %i\n", i);
 792                         cx231xx_uninit_isoc(dev);
 793                         return -ENOMEM;
 794                 }
 795                 dev->video_mode.isoc_ctl.urb[i] = urb;
 796
 797                 dev->video_mode.isoc_ctl.transfer_buffer[i] =
 798                     usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL,
 799                                      &urb->transfer_dma);
 800                 if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 801                         cx231xx_err("unable to allocate %i bytes for transfer"
 802                                     " buffer %i%s\n",
 803                                     sb_size, i,
 804                                     in_interrupt() ? " while in int" : "");
 805                         cx231xx_uninit_isoc(dev);
 806                         return -ENOMEM;
 807                 }
 808                 memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
 809
 810                 pipe =
 811                     usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
 812
 813                 usb_fill_int_urb(urb, dev->udev, pipe,
 814                                  dev->video_mode.isoc_ctl.transfer_buffer[i],
 815                                  sb_size, cx231xx_irq_callback, dma_q, 1);
 816
 817                 urb->number_of_packets = max_packets;
 818                 urb->transfer_flags = URB_ISO_ASAP;
 819
 820                 k = 0;
 821                 for (j = 0; j < max_packets; j++) {
 822                         urb->iso_frame_desc[j].offset = k;
 823                         urb->iso_frame_desc[j].length =
 824                             dev->video_mode.isoc_ctl.max_pkt_size;
 825                         k += dev->video_mode.isoc_ctl.max_pkt_size;
 826                 }
 827         }
 828
 829         init_waitqueue_head(&dma_q->wq);
 830
 831         /* submit urbs and enables IRQ */
 832         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 833                 rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i],
 834                                     GFP_ATOMIC);
 835                 if (rc) {
 836                         cx231xx_err("submit of urb %i failed (error=%i)\n", i,
 837                                     rc);
 838                         cx231xx_uninit_isoc(dev);
 839                         return rc;
 840                 }
 841         }
 842
 843         cx231xx_capture_start(dev, 1, Raw_Video);
 844
 845         return 0;
 846 }
 847 EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
 848
 849 /*****************************************************************
 850 *             Device Init/UnInit functions                       *
 851 ******************************************************************/
 852 int cx231xx_dev_init(struct cx231xx *dev)
 853 {
 854         int errCode = 0;
 855
 856         /* Initialize I2C bus */
 857
 858         /* External Master 1 Bus */
 859         dev->i2c_bus[0].nr = 0;
 860         dev->i2c_bus[0].dev = dev;
 861         dev->i2c_bus[0].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 862         dev->i2c_bus[0].i2c_nostop = 0;
 863         dev->i2c_bus[0].i2c_reserve = 0;
 864
 865         /* External Master 2 Bus */
 866         dev->i2c_bus[1].nr = 1;
 867         dev->i2c_bus[1].dev = dev;
 868         dev->i2c_bus[1].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 869         dev->i2c_bus[1].i2c_nostop = 0;
 870         dev->i2c_bus[1].i2c_reserve = 0;
 871
 872         /* Internal Master 3 Bus */
 873         dev->i2c_bus[2].nr = 2;
 874         dev->i2c_bus[2].dev = dev;
 875         dev->i2c_bus[2].i2c_period = I2C_SPEED_400K;    /* 400kHz */
 876         dev->i2c_bus[2].i2c_nostop = 0;
 877         dev->i2c_bus[2].i2c_reserve = 0;
 878
 879         /* register I2C buses */
 880         cx231xx_i2c_register(&dev->i2c_bus[0]);
 881         cx231xx_i2c_register(&dev->i2c_bus[1]);
 882         cx231xx_i2c_register(&dev->i2c_bus[2]);
 883
 884         /* init hardware */
 885         /* Note : with out calling set power mode function,
 886         afe can not be set up correctly */
 887         errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
 888         if (errCode < 0) {
 889                 cx231xx_errdev
 890                     ("%s: Failed to set Power - errCode [%d]!\n",
 891                      __func__, errCode);
 892                 return errCode;
 893         }
 894
 895         /* initialize Colibri block */
 896         errCode = cx231xx_afe_init_super_block(dev, 0x23c);
 897         if (errCode < 0) {
 898                 cx231xx_errdev
 899                     ("%s: cx231xx_afe init super block - errCode [%d]!\n",
 900                      __func__, errCode);
 901                 return errCode;
 902         }
 903         errCode = cx231xx_afe_init_channels(dev);
 904         if (errCode < 0) {
 905                 cx231xx_errdev
 906                     ("%s: cx231xx_afe init channels - errCode [%d]!\n",
 907                      __func__, errCode);
 908                 return errCode;
 909         }
 910
 911         /* Set DIF in By pass mode */
 912         errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
 913         if (errCode < 0) {
 914                 cx231xx_errdev
 915                     ("%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
 916                      __func__, errCode);
 917                 return errCode;
 918         }
 919
 920         /* I2S block related functions */
 921         errCode = cx231xx_i2s_blk_initialize(dev);
 922         if (errCode < 0) {
 923                 cx231xx_errdev
 924                     ("%s: cx231xx_i2s block initialize - errCode [%d]!\n",
 925                      __func__, errCode);
 926                 return errCode;
 927         }
 928
 929         /* init control pins */
 930         errCode = cx231xx_init_ctrl_pin_status(dev);
 931         if (errCode < 0) {
 932                 cx231xx_errdev("%s: cx231xx_init ctrl pins - errCode [%d]!\n",
 933                                __func__, errCode);
 934                 return errCode;
 935         }
 936
 937         /* set AGC mode to Analog */
 938         errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
 939         if (errCode < 0) {
 940                 cx231xx_errdev
 941                     ("%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
 942                      __func__, errCode);
 943                 return errCode;
 944         }
 945
 946         /* set all alternate settings to zero initially */
 947         cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
 948         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
 949         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
 950         if (dev->board.has_dvb)
 951                 cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
 952
 953         /* set the I2C master port to 3 on channel 1 */
 954         errCode = cx231xx_enable_i2c_for_tuner(dev, I2C_3);
 955
 956         return errCode;
 957 }
 958 EXPORT_SYMBOL_GPL(cx231xx_dev_init);
 959
 960 void cx231xx_dev_uninit(struct cx231xx *dev)
 961 {
 962         /* Un Initialize I2C bus */
 963         cx231xx_i2c_unregister(&dev->i2c_bus[2]);
 964         cx231xx_i2c_unregister(&dev->i2c_bus[1]);
 965         cx231xx_i2c_unregister(&dev->i2c_bus[0]);
 966 }
 967 EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
 968
 969 /*****************************************************************
 970 *              G P I O related functions                         *
 971 ******************************************************************/
 972 int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 * gpio_val,
 973                           u8 len, u8 request, u8 direction)
 974 {
 975         int status = 0;
 976         struct VENDOR_REQUEST_IN ven_req;
 977
 978         /* Set wValue */
 979         ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff);
 980
 981         /* set request */
 982         if (!request) {
 983                 if (direction)
 984                         ven_req.bRequest = VRT_GET_GPIO;        /* 0x8 gpio */
 985                 else
 986                         ven_req.bRequest = VRT_SET_GPIO;        /* 0x9 gpio */
 987         } else {
 988                 if (direction)
 989                         ven_req.bRequest = VRT_GET_GPIE;        /* 0xa gpie */
 990                 else
 991                         ven_req.bRequest = VRT_SET_GPIE;        /* 0xb gpie */
 992         }
 993
 994         /* set index value */
 995         ven_req.wIndex = (u16) (gpio_bit & 0xffff);
 996
 997         /* set wLength value */
 998         ven_req.wLength = len;
 999
1000         /* set bData value */
1001         ven_req.bData = 0;
1002
1003         /* set the buffer for read / write */
1004         ven_req.pBuff = gpio_val;
1005
1006         /* set the direction */
1007         if (direction) {
1008                 ven_req.direction = USB_DIR_IN;
1009                 memset(ven_req.pBuff, 0x00, ven_req.wLength);
1010         } else
1011                 ven_req.direction = USB_DIR_OUT;
1012
1013
1014         /* call common vendor command request */
1015         status = cx231xx_send_vendor_cmd(dev, &ven_req);
1016         if (status < 0) {
1017                 cx231xx_info
1018                     ("UsbInterface::sendCommand, failed with status -%d\n",
1019                      status);
1020         }
1021
1022         return status;
1023 }
1024 EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
1025
1026 /*****************************************************************
1027  *    C O N T R O L - Register R E A D / W R I T E functions     *
1028  *****************************************************************/
1029 int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
1030 {
1031         u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
1032         u32 tmp = 0;
1033         int status = 0;
1034
1035         status =
1036             cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4);
1037         if (status < 0)
1038                 return status;
1039
1040         tmp = *((u32 *) value);
1041         tmp |= mode;
1042
1043         value[0] = (u8) tmp;
1044         value[1] = (u8) (tmp >> 8);
1045         value[2] = (u8) (tmp >> 16);
1046         value[3] = (u8) (tmp >> 24);
1047
1048         status =
1049             cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4);
1050
1051         return status;
1052 }
1053
1054 /*****************************************************************
1055  *            I 2 C Internal C O N T R O L   functions           *
1056  *****************************************************************/
1057 int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1058                           u8 saddr_len, u32 *data, u8 data_len)
1059 {
1060         int status = 0;
1061         struct cx231xx_i2c_xfer_data req_data;
1062         u8 value[4] = { 0, 0, 0, 0 };
1063
1064         if (saddr_len == 0)
1065                 saddr = 0;
1066         else if (saddr_len == 0)
1067                 saddr &= 0xff;
1068
1069         /* prepare xfer_data struct */
1070         req_data.dev_addr = dev_addr >> 1;
1071         req_data.direction = I2C_M_RD;
1072         req_data.saddr_len = saddr_len;
1073         req_data.saddr_dat = saddr;
1074         req_data.buf_size = data_len;
1075         req_data.p_buffer = (u8 *) value;
1076
1077         /* usb send command */
1078         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1079
1080         if (status >= 0) {
1081                 /* Copy the data read back to main buffer */
1082                 if (data_len == 1)
1083                         *data = value[0];
1084                 else
1085                         *data =
1086                             value[0] | value[1] << 8 | value[2] << 16 | value[3]
1087                             << 24;
1088         }
1089
1090         return status;
1091 }
1092
1093 int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1094                            u8 saddr_len, u32 data, u8 data_len)
1095 {
1096         int status = 0;
1097         u8 value[4] = { 0, 0, 0, 0 };
1098         struct cx231xx_i2c_xfer_data req_data;
1099
1100         value[0] = (u8) data;
1101         value[1] = (u8) (data >> 8);
1102         value[2] = (u8) (data >> 16);
1103         value[3] = (u8) (data >> 24);
1104
1105         if (saddr_len == 0)
1106                 saddr = 0;
1107         else if (saddr_len == 0)
1108                 saddr &= 0xff;
1109
1110         /* prepare xfer_data struct */
1111         req_data.dev_addr = dev_addr >> 1;
1112         req_data.direction = 0;
1113         req_data.saddr_len = saddr_len;
1114         req_data.saddr_dat = saddr;
1115         req_data.buf_size = data_len;
1116         req_data.p_buffer = value;
1117
1118         /* usb send command */
1119         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1120
1121         return status;
1122 }
1123
1124 int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
1125                            u16 register_address, u8 bit_start, u8 bit_end,
1126                            u32 value)
1127 {
1128         int status = 0;
1129         u32 tmp;
1130         u32 mask = 0;
1131         int i;
1132
1133         if (bit_start > (size - 1) || bit_end > (size - 1))
1134                 return -1;
1135
1136         if (size == 8) {
1137                 status =
1138                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1139                                           &tmp, 1);
1140         } else {
1141                 status =
1142                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1143                                           &tmp, 4);
1144         }
1145
1146         if (status < 0)
1147                 return status;
1148
1149         mask = 1 << bit_end;
1150         for (i = bit_end; i > bit_start && i > 0; i--)
1151                 mask = mask + (1 << (i - 1));
1152
1153         value <<= bit_start;
1154
1155         if (size == 8) {
1156                 tmp &= ~mask;
1157                 tmp |= value;
1158                 tmp &= 0xff;
1159                 status =
1160                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1161                                            tmp, 1);
1162         } else {
1163                 tmp &= ~mask;
1164                 tmp |= value;
1165                 status =
1166                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1167                                            tmp, 4);
1168         }
1169
1170         return status;
1171 }
1172
1173 int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
1174                                         u16 saddr, u32 mask, u32 value)
1175 {
1176         u32 temp;
1177         int status = 0;
1178
1179         status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
1180
1181         if (status < 0)
1182                 return status;
1183
1184         temp &= ~mask;
1185         temp |= value;
1186
1187         status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
1188
1189         return status;
1190 }
1191
1192 u32 cx231xx_set_field(u32 field_mask, u32 data)
1193 {
1194         u32 temp;
1195
1196         for (temp = field_mask; (temp & 1) == 0; temp >>= 1)
1197                 data <<= 1;
1198
1199         return data;
1200 }