drivers/media/video/cx231xx/cx231xx-core.c

   1 /*
   2    cx231xx-core.c - driver for Conexant Cx23100/101/102 USB video capture devices
   3
   4    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   5         Based on em28xx driver
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/list.h>
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/vmalloc.h>
  27 #include <media/v4l2-common.h>
  28
  29 #include "cx231xx.h"
  30 #include "cx231xx-reg.h"
  31
  32 /* #define ENABLE_DEBUG_ISOC_FRAMES */
  33
  34 static unsigned int core_debug;
  35 module_param(core_debug,int,0644);
  36 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
  37
  38 #define cx231xx_coredbg(fmt, arg...) do {\
  39         if (core_debug) \
  40                 printk(KERN_INFO "%s %s :"fmt, \
  41                          dev->name, __func__ , ##arg); } while (0)
  42
  43 static unsigned int reg_debug;
  44 module_param(reg_debug,int,0644);
  45 MODULE_PARM_DESC(reg_debug,"enable debug messages [URB reg]");
  46
  47 #define cx231xx_regdbg(fmt, arg...) do {\
  48         if (reg_debug) \
  49                 printk(KERN_INFO "%s %s :"fmt, \
  50                          dev->name, __func__ , ##arg); } while (0)
  51
  52 static int alt = CX231XX_PINOUT;
  53 module_param(alt, int, 0644);
  54 MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
  55
  56 /* FIXME */
  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
  64 /************************************************************************************
  65 *                              Device control list functions                        *
  66 *************************************************************************************/
  67
  68 static LIST_HEAD(cx231xx_devlist);
  69 static DEFINE_MUTEX(cx231xx_devlist_mutex);
  70
  71 struct cx231xx *cx231xx_get_device(int minor,
  72                                  enum v4l2_buf_type *fh_type,
  73                                  int *has_radio)
  74 {
  75         struct cx231xx *h, *dev = NULL;
  76
  77         *fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
  78         *has_radio = 0;
  79
  80         mutex_lock(&cx231xx_devlist_mutex);
  81         list_for_each_entry(h, &cx231xx_devlist, devlist) {
  82                 if (h->vdev->minor == minor)
  83                         dev = h;
  84                 if (h->vbi_dev->minor == minor) {
  85                         dev = h;
  86                         *fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
  87                 }
  88                 if (h->radio_dev &&
  89                     h->radio_dev->minor == minor) {
  90                         dev = h;
  91                         *has_radio = 1;
  92                 }
  93         }
  94         mutex_unlock(&cx231xx_devlist_mutex);
  95
  96         return dev;
  97 }
  98
  99 /*
 100  * cx231xx_realease_resources()
 101  * unregisters the v4l2,i2c and usb devices
 102  * called when the device gets disconected or at module unload
 103 */
 104 void cx231xx_remove_from_devlist(struct cx231xx *dev)
 105 {
 106         mutex_lock(&cx231xx_devlist_mutex);
 107         list_del(&dev->devlist);
 108         mutex_unlock(&cx231xx_devlist_mutex);
 109 };
 110
 111 void cx231xx_add_into_devlist(struct cx231xx *dev)
 112 {
 113         mutex_lock(&cx231xx_devlist_mutex);
 114         list_add_tail(&dev->devlist, &cx231xx_devlist);
 115         mutex_unlock(&cx231xx_devlist_mutex);
 116 };
 117
 118
 119
 120
 121 static LIST_HEAD(cx231xx_extension_devlist);
 122 static DEFINE_MUTEX(cx231xx_extension_devlist_lock);
 123
 124 int cx231xx_register_extension(struct cx231xx_ops *ops)
 125 {
 126         struct cx231xx *dev = NULL;
 127
 128         mutex_lock(&cx231xx_devlist_mutex);
 129         mutex_lock(&cx231xx_extension_devlist_lock);
 130         list_add_tail(&ops->next, &cx231xx_extension_devlist);
 131         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 132                 if (dev)
 133                         ops->init(dev);
 134         }
 135         cx231xx_info("Cx231xx: Initialized (%s) extension\n", ops->name);
 136         mutex_unlock(&cx231xx_extension_devlist_lock);
 137         mutex_unlock(&cx231xx_devlist_mutex);
 138         return 0;
 139 }
 140 EXPORT_SYMBOL(cx231xx_register_extension);
 141
 142 void cx231xx_unregister_extension(struct cx231xx_ops *ops)
 143 {
 144         struct cx231xx *dev = NULL;
 145
 146         mutex_lock(&cx231xx_devlist_mutex);
 147         list_for_each_entry(dev, &cx231xx_devlist, devlist) {
 148                 if (dev)
 149                         ops->fini(dev);
 150         }
 151
 152         mutex_lock(&cx231xx_extension_devlist_lock);
 153         cx231xx_info("Cx231xx: Removed (%s) extension\n", ops->name);
 154         list_del(&ops->next);
 155         mutex_unlock(&cx231xx_extension_devlist_lock);
 156         mutex_unlock(&cx231xx_devlist_mutex);
 157 }
 158 EXPORT_SYMBOL(cx231xx_unregister_extension);
 159
 160
 161 void cx231xx_init_extension(struct cx231xx *dev)
 162 {
 163         struct cx231xx_ops *ops = NULL;
 164
 165         mutex_lock(&cx231xx_extension_devlist_lock);
 166         if (!list_empty(&cx231xx_extension_devlist)) {
 167                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 168                         if (ops->init)
 169                                 ops->init(dev);
 170                 }
 171         }
 172         mutex_unlock(&cx231xx_extension_devlist_lock);
 173 }
 174
 175 void cx231xx_close_extension(struct cx231xx *dev)
 176 {
 177         struct cx231xx_ops *ops = NULL;
 178
 179         mutex_lock(&cx231xx_extension_devlist_lock);
 180         if (!list_empty(&cx231xx_extension_devlist)) {
 181                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 182                         if (ops->fini)
 183                                 ops->fini(dev);
 184                 }
 185         }
 186         mutex_unlock(&cx231xx_extension_devlist_lock);
 187 }
 188
 189 /************************************************************************************
 190 *                              U S B related functions                              *
 191 *************************************************************************************/
 192 int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
 193                    struct cx231xx_i2c_xfer_data *req_data)
 194 {
 195     int status = 0;
 196     struct cx231xx *dev = i2c_bus->dev;
 197     VENDOR_REQUEST_IN ven_req;
 198
 199     u8 saddr_len    = 0;
 200     u8 _i2c_period  = 0;
 201     u8 _i2c_nostop  = 0;
 202     u8 _i2c_reserve = 0;
 203
 204     /* Get the I2C period, nostop and reserve parameters */
 205     _i2c_period  = i2c_bus->i2c_period;
 206     _i2c_nostop  = i2c_bus->i2c_nostop;
 207     _i2c_reserve = i2c_bus->i2c_reserve;
 208
 209     saddr_len = req_data->saddr_len;
 210
 211     /* Set wValue */
 212     if(saddr_len == 1)                          /* need check saddr_len == 0  */
 213         ven_req.wValue = req_data->dev_addr<<9|_i2c_period<<4|saddr_len<<2|
 214                         _i2c_nostop<<1|I2C_SYNC|_i2c_reserve<<6;
 215     else
 216         ven_req.wValue = req_data->dev_addr<<9|_i2c_period<<4|saddr_len<<2|
 217                         _i2c_nostop<<1|I2C_SYNC|_i2c_reserve<<6;
 218
 219     /* set channel number */
 220     if(req_data->direction & I2C_M_RD)
 221         ven_req.bRequest = i2c_bus->nr + 4;   /* channel number, for read,
 222                                                  spec required channel_num +4 */
 223     else
 224         ven_req.bRequest = i2c_bus->nr;       /* channel number,  */
 225
 226     /* set index value */
 227     switch(saddr_len){
 228         case 0:
 229             ven_req.wIndex = 0;               /* need check */
 230             break;
 231         case 1:
 232             ven_req.wIndex = (req_data->saddr_dat & 0xff);
 233             break;
 234         case 2:
 235             ven_req.wIndex = req_data->saddr_dat;
 236             break;
 237     }
 238
 239     /* set wLength value */
 240     ven_req.wLength = req_data->buf_size;
 241
 242     /* set bData value */
 243     ven_req.bData = 0;
 244
 245     /* set the direction */
 246     if(req_data->direction){
 247         ven_req.direction = USB_DIR_IN;
 248         memset(req_data->p_buffer, 0x00, ven_req.wLength);
 249     }
 250     else
 251         ven_req.direction = USB_DIR_OUT;
 252
 253     /* set the buffer for read / write */
 254     ven_req.pBuff = req_data->p_buffer;
 255
 256
 257
 258     /* call common vendor command request */
 259     status = cx231xx_send_vendor_cmd(dev, &ven_req);
 260     if (status < 0) {
 261         cx231xx_info("UsbInterface::sendCommand, output buffer failed with status -%d\n", status);
 262     }
 263
 264     return status;
 265 }
 266
 267 EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
 268 /*
 269  * cx231xx_read_ctrl_reg()
 270  * reads data from the usb device specifying bRequest and wValue
 271  */
 272 int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
 273                             char *buf, int len)
 274 {
 275      u8 val = 0;
 276         int ret;
 277         int pipe = usb_rcvctrlpipe(dev->udev, 0);
 278
 279         if (dev->state & DEV_DISCONNECTED)
 280                 return -ENODEV;
 281
 282         if (len > URB_MAX_CTRL_SIZE)
 283                 return -EINVAL;
 284
 285     switch(len)
 286     {
 287         case 1:
 288             val = ENABLE_ONE_BYTE;
 289             break;
 290         case 2:
 291             val = ENABLE_TWE_BYTE;
 292             break;
 293         case 3:
 294             val = ENABLE_THREE_BYTE;
 295             break;
 296         case 4:
 297             val = ENABLE_FOUR_BYTE;
 298             break;
 299         default:
 300             val = 0xFF; /* invalid option */
 301     }
 302
 303     if(val == 0xFF)
 304         return -EINVAL;
 305
 306         if (reg_debug) {
 307                 cx231xx_isocdbg("(pipe 0x%08x): "
 308                         "IN:  %02x %02x %02x %02x %02x %02x %02x %02x ",
 309                         pipe,
 310                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 311                         req, 0, val,
 312                         reg & 0xff, reg >> 8,
 313                         len & 0xff, len >> 8);
 314         }
 315
 316         /* mutex_lock(&dev->ctrl_urb_lock);  */
 317         ret = usb_control_msg(dev->udev, pipe, req,
 318                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 319                               val, reg, dev->urb_buf, len, HZ);
 320         if (ret < 0) {
 321                 cx231xx_isocdbg(" failed!\n");
 322                 /* mutex_unlock(&dev->ctrl_urb_lock); */
 323                 return ret;
 324         }
 325
 326         if (len)
 327                 memcpy(buf, dev->urb_buf, len);
 328
 329         /* mutex_unlock(&dev->ctrl_urb_lock); */
 330
 331         if (reg_debug) {
 332                 int byte;
 333
 334                 cx231xx_isocdbg("<<<");
 335                 for (byte = 0; byte < len; byte++)
 336                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 337                 cx231xx_isocdbg("\n");
 338         }
 339
 340         return ret;
 341 }
 342
 343
 344 int cx231xx_send_vendor_cmd(struct cx231xx *dev, VENDOR_REQUEST_IN *ven_req)
 345 {
 346     int ret;
 347         int pipe = 0;
 348
 349         if (dev->state & DEV_DISCONNECTED)
 350                 return -ENODEV;
 351
 352         if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
 353                 return -EINVAL;
 354
 355     if(ven_req->direction)
 356         pipe = usb_rcvctrlpipe(dev->udev, 0);
 357     else
 358         pipe = usb_sndctrlpipe(dev->udev, 0);
 359
 360
 361         if (reg_debug) {
 362                 int byte;
 363
 364                 cx231xx_isocdbg("(pipe 0x%08x): "
 365                         "OUT: %02x %02x %02x %04x %04x %04x >>>",
 366                         pipe,
 367                         ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 368                         ven_req->bRequest, 0, ven_req->wValue,
 369                         ven_req->wIndex,
 370                         ven_req->wLength);
 371
 372                 for (byte = 0; byte < ven_req->wLength; byte++)
 373                         cx231xx_isocdbg(" %02x", (unsigned char)ven_req->pBuff[byte]);
 374                 cx231xx_isocdbg("\n");
 375         }
 376
 377         /* mutex_lock(&dev->ctrl_urb_lock); */
 378         ret = usb_control_msg(dev->udev, pipe, ven_req->bRequest,
 379                               ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 380                               ven_req->wValue, ven_req->wIndex, ven_req->pBuff, ven_req->wLength, HZ);
 381         /* mutex_unlock(&dev->ctrl_urb_lock); */
 382
 383         return ret;
 384 }
 385
 386 /*
 387  * cx231xx_write_ctrl_reg()
 388  * sends data to the usb device, specifying bRequest
 389  */
 390 int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
 391                                  int len)
 392 {
 393     u8 val = 0;
 394         int ret;
 395         int pipe = usb_sndctrlpipe(dev->udev, 0);
 396
 397         if (dev->state & DEV_DISCONNECTED)
 398                 return -ENODEV;
 399
 400         if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
 401                 return -EINVAL;
 402
 403     switch(len)
 404     {
 405         case 1:
 406             val = ENABLE_ONE_BYTE;
 407             break;
 408         case 2:
 409             val = ENABLE_TWE_BYTE;
 410             break;
 411         case 3:
 412             val = ENABLE_THREE_BYTE;
 413             break;
 414         case 4:
 415             val = ENABLE_FOUR_BYTE;
 416             break;
 417         default:
 418             val = 0xFF; /* invalid option */
 419     }
 420
 421     if(val == 0xFF)
 422         return -EINVAL;
 423
 424         if (reg_debug) {
 425                 int byte;
 426
 427                 cx231xx_isocdbg("(pipe 0x%08x): "
 428                         "OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
 429                         pipe,
 430                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 431                         req, 0, val,
 432                         reg & 0xff, reg >> 8,
 433                         len & 0xff, len >> 8);
 434
 435                 for (byte = 0; byte < len; byte++)
 436                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 437                 cx231xx_isocdbg("\n");
 438         }
 439
 440         /* mutex_lock(&dev->ctrl_urb_lock); */
 441         memcpy(dev->urb_buf, buf, len);
 442         ret = usb_control_msg(dev->udev, pipe, req,
 443                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 444                               val, reg, dev->urb_buf, len, HZ);
 445         /* mutex_unlock(&dev->ctrl_urb_lock); */
 446
 447         return ret;
 448 }
 449
 450
 451 /************************************************************************************
 452 *                         USB Alternate Setting functions                           *
 453 *************************************************************************************/
 454
 455 int cx231xx_set_video_alternate(struct cx231xx *dev)
 456 {
 457         int errCode, prev_alt = dev->video_mode.alt;
 458         unsigned int min_pkt_size = dev->width * 2 + 4;
 459     u32 usb_interface_index = 0;
 460
 461         /* When image size is bigger than a certain value,
 462            the frame size should be increased, otherwise, only
 463            green screen will be received.
 464          */
 465         if (dev->width * 2 * dev->height > 720 * 240 * 2)
 466                 min_pkt_size *= 2;
 467
 468     if(dev->width > 360) {
 469         /* resolutions: 720,704,640 */
 470         dev->video_mode.alt = 3;
 471     } else if(dev->width > 180) {
 472         /* resolutions: 360,352,320,240 */
 473         dev->video_mode.alt = 2;
 474     } else if(dev->width > 0) {
 475         /* resolutions: 180,176,160,128,88 */
 476         dev->video_mode.alt = 1;
 477     } else {
 478         /* Change to alt0 BULK to release USB bandwidth */
 479         dev->video_mode.alt = 0;
 480     }
 481
 482     /* Get the correct video interface Index */
 483     usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.video_index+1;
 484
 485         if (dev->video_mode.alt != prev_alt) {
 486                 cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
 487                                 min_pkt_size, dev->video_mode.alt);
 488                 dev->video_mode.max_pkt_size = dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
 489                 cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
 490                                dev->video_mode.alt, dev->video_mode.max_pkt_size);
 491         cx231xx_info(" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n",
 492                                dev->video_mode.alt, dev->video_mode.max_pkt_size, usb_interface_index);
 493                 errCode = usb_set_interface(dev->udev, usb_interface_index, dev->video_mode.alt);
 494                 if (errCode < 0) {
 495                         cx231xx_errdev("cannot change alternate number to %d (error=%i)\n",
 496                                         dev->video_mode.alt, errCode);
 497                         return errCode;
 498                 }
 499         }
 500         return 0;
 501 }
 502
 503 int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
 504 {
 505     int status = 0;
 506     u32 usb_interface_index = 0;
 507     u32 max_pkt_size = 0;
 508
 509     switch(index) {
 510         case INDEX_TS1:
 511             usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.ts1_index+1;
 512             dev->video_mode.alt = alt;
 513             if(dev->ts1_mode.alt_max_pkt_size != NULL)
 514                 max_pkt_size = dev->ts1_mode.max_pkt_size = dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
 515             break;
 516         case INDEX_TS2:
 517             usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.ts2_index+1;
 518             break;
 519         case INDEX_AUDIO:
 520             usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.audio_index+1;
 521             dev->adev.alt = alt;
 522             if( dev->adev.alt_max_pkt_size != NULL)
 523                 max_pkt_size = dev->adev.max_pkt_size = dev->adev.alt_max_pkt_size[dev->adev.alt];
 524             break;
 525         case INDEX_VIDEO:
 526             usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.video_index+1;
 527             dev->video_mode.alt = alt;
 528             if(dev->video_mode.alt_max_pkt_size != NULL)
 529                 max_pkt_size = dev->video_mode.max_pkt_size = dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
 530             break;
 531         case INDEX_VANC:
 532             usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.vanc_index+1;
 533             dev->vbi_mode.alt = alt;
 534             if(dev->vbi_mode.alt_max_pkt_size != NULL)
 535                 max_pkt_size = dev->vbi_mode.max_pkt_size = dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
 536             break;
 537         case INDEX_HANC:
 538             usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.hanc_index+1;
 539             dev->sliced_cc_mode.alt = alt;
 540             if(dev->sliced_cc_mode.alt_max_pkt_size != NULL)
 541                 max_pkt_size = dev->sliced_cc_mode.max_pkt_size = dev->sliced_cc_mode.alt_max_pkt_size[dev->sliced_cc_mode.alt];
 542             break;
 543         default:
 544             break;
 545     }
 546
 547     if(alt > 0 && max_pkt_size == 0 ) {
 548         cx231xx_errdev("cannot change interface %d alternate number to %d : Max. Pkt size is ZERO\n",
 549                                         usb_interface_index, alt);
 550         return -1;
 551     }
 552
 553     cx231xx_info(" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n",
 554                                alt, max_pkt_size, usb_interface_index);
 555
 556     if(usb_interface_index > 0 ) {
 557         status = usb_set_interface(dev->udev, usb_interface_index, alt);
 558                 if (status < 0) {
 559                         cx231xx_errdev("cannot change interface %d alternate number to %d (error=%i)\n",
 560                                         usb_interface_index, alt, status);
 561                         return status;
 562                 }
 563     }
 564
 565     return status;
 566 }
 567 EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
 568
 569 int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
 570 {
 571         int rc = 0;
 572
 573         if (!gpio)
 574                 return rc;
 575
 576         /* Send GPIO reset sequences specified at board entry */
 577         while (gpio->sleep >= 0) {
 578         rc = cx231xx_set_gpio_value(dev, gpio->bit,
 579                                                    gpio->val);
 580                         if (rc < 0)
 581                                 return rc;
 582
 583                 if (gpio->sleep > 0)
 584                         msleep(gpio->sleep);
 585
 586                 gpio++;
 587         }
 588         return rc;
 589 }
 590
 591 int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
 592 {
 593         if (dev->mode == set_mode)
 594                 return 0;
 595
 596         if (set_mode == CX231XX_SUSPEND) {
 597         /* Set the chip in power saving mode */
 598                 dev->mode = set_mode;
 599         }
 600
 601         /* Resource is locked */
 602         if (dev->mode != CX231XX_SUSPEND)
 603                 return -EINVAL;
 604
 605         dev->mode = set_mode;
 606
 607     if (dev->mode == CX231XX_DIGITAL_MODE) {
 608         /* Set Digital power mode */
 609     } else {
 610         /* Set Analog Power mode*/
 611     }
 612     return 0;
 613 }
 614 EXPORT_SYMBOL_GPL(cx231xx_set_mode);
 615
 616 /************************************************************************************
 617 *                               URB Streaming functions                             *
 618 *************************************************************************************/
 619
 620 /*
 621  * IRQ callback, called by URB callback
 622  */
 623 static void cx231xx_irq_callback(struct urb *urb)
 624 {
 625         struct cx231xx_dmaqueue  *dma_q = urb->context;
 626     struct cx231xx_video_mode *vmode = container_of(dma_q, struct cx231xx_video_mode, vidq);
 627     struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 628         int rc, i;
 629
 630
 631     switch (urb->status) {
 632             case 0:             /* success */
 633             case -ETIMEDOUT:    /* NAK */
 634                     break;
 635             case -ECONNRESET:   /* kill */
 636             case -ENOENT:
 637             case -ESHUTDOWN:
 638                     return;
 639             default:            /* error */
 640                     cx231xx_isocdbg("urb completition error %d.\n", urb->status);
 641                     break;
 642         }
 643
 644         /* Copy data from URB */
 645         spin_lock(&dev->video_mode.slock);
 646         rc = dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
 647         spin_unlock(&dev->video_mode.slock);
 648
 649         /* Reset urb buffers */
 650         for (i = 0; i < urb->number_of_packets; i++) {
 651                 urb->iso_frame_desc[i].status = 0;
 652                 urb->iso_frame_desc[i].actual_length = 0;
 653         }
 654         urb->status = 0;
 655
 656         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 657         if (urb->status) {
 658                 cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
 659                                urb->status);
 660         }
 661 }
 662
 663 /*
 664  * Stop and Deallocate URBs
 665  */
 666 void cx231xx_uninit_isoc(struct cx231xx *dev)
 667 {
 668         struct urb *urb;
 669         int i;
 670
 671         cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
 672
 673         dev->video_mode.isoc_ctl.nfields = -1;
 674         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 675                 urb = dev->video_mode.isoc_ctl.urb[i];
 676                 if (urb) {
 677             if (!irqs_disabled())
 678                             usb_kill_urb(urb);
 679             else
 680                             usb_unlink_urb(urb);
 681
 682                         if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 683                                 usb_buffer_free(dev->udev,
 684                                         urb->transfer_buffer_length,
 685                                         dev->video_mode.isoc_ctl.transfer_buffer[i],
 686                                         urb->transfer_dma);
 687                         }
 688                         usb_free_urb(urb);
 689                         dev->video_mode.isoc_ctl.urb[i] = NULL;
 690                 }
 691                 dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
 692         }
 693
 694         kfree(dev->video_mode.isoc_ctl.urb);
 695         kfree(dev->video_mode.isoc_ctl.transfer_buffer);
 696
 697         dev->video_mode.isoc_ctl.urb = NULL;
 698         dev->video_mode.isoc_ctl.transfer_buffer = NULL;
 699         dev->video_mode.isoc_ctl.num_bufs = 0;
 700
 701         cx231xx_capture_start(dev, 0, Raw_Video);
 702 }
 703 EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
 704
 705 /*
 706  * Allocate URBs and start IRQ
 707  */
 708 int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
 709                      int num_bufs, int max_pkt_size,
 710                      int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
 711 {
 712         struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
 713         int i;
 714         int sb_size, pipe;
 715         struct urb *urb;
 716         int j, k;
 717         int rc;
 718
 719         cx231xx_isocdbg("cx231xx: called cx231xx_prepare_isoc\n");
 720
 721     dev->video_input = dev->video_input > 2?2:dev->video_input;
 722
 723     cx231xx_info("Setting Video mux to %d\n",dev->video_input);
 724     video_mux(dev, dev->video_input);
 725
 726
 727         /* De-allocates all pending stuff */
 728         cx231xx_uninit_isoc(dev);
 729
 730         dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
 731         dev->video_mode.isoc_ctl.num_bufs = num_bufs;
 732     dma_q->pos = 0;
 733     dma_q->is_partial_line = 0;
 734     dma_q->last_sav = 0;
 735     dma_q->current_field = -1;
 736     dma_q->field1_done = 0;
 737     dma_q->lines_per_field = dev->height/2;
 738     dma_q->bytes_left_in_line = dev->width << 1;
 739     dma_q->lines_completed = 0;
 740     for(i = 0; i < 8 ; i++)
 741         dma_q->partial_buf[i] = 0;
 742
 743         dev->video_mode.isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs,  GFP_KERNEL);
 744         if (!dev->video_mode.isoc_ctl.urb) {
 745                 cx231xx_errdev("cannot alloc memory for usb buffers\n");
 746                 return -ENOMEM;
 747         }
 748
 749         dev->video_mode.isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
 750                                               GFP_KERNEL);
 751         if (!dev->video_mode.isoc_ctl.transfer_buffer) {
 752                 cx231xx_errdev("cannot allocate memory for usbtransfer\n");
 753                 kfree(dev->video_mode.isoc_ctl.urb);
 754                 return -ENOMEM;
 755         }
 756
 757         dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
 758         dev->video_mode.isoc_ctl.buf = NULL;
 759
 760         sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
 761
 762         /* allocate urbs and transfer buffers */
 763         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 764                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 765                 if (!urb) {
 766                         cx231xx_err("cannot alloc isoc_ctl.urb %i\n", i);
 767                         cx231xx_uninit_isoc(dev);
 768                         return -ENOMEM;
 769                 }
 770                 dev->video_mode.isoc_ctl.urb[i] = urb;
 771
 772                 dev->video_mode.isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->udev,
 773                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 774                 if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 775                         cx231xx_err("unable to allocate %i bytes for transfer"
 776                                         " buffer %i%s\n",
 777                                         sb_size, i,
 778                                         in_interrupt()?" while in int":"");
 779                         cx231xx_uninit_isoc(dev);
 780                         return -ENOMEM;
 781                 }
 782                 memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
 783
 784                 pipe = usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
 785
 786                 usb_fill_int_urb(urb, dev->udev, pipe,
 787                                  dev->video_mode.isoc_ctl.transfer_buffer[i], sb_size,
 788                                  cx231xx_irq_callback, dma_q, 1);
 789
 790                 urb->number_of_packets = max_packets;
 791                 urb->transfer_flags = URB_ISO_ASAP;
 792
 793                 k = 0;
 794                 for (j = 0; j < max_packets; j++) {
 795                         urb->iso_frame_desc[j].offset = k;
 796                         urb->iso_frame_desc[j].length =
 797                                                 dev->video_mode.isoc_ctl.max_pkt_size;
 798                         k += dev->video_mode.isoc_ctl.max_pkt_size;
 799                 }
 800         }
 801
 802         init_waitqueue_head(&dma_q->wq);
 803
 804
 805         /* submit urbs and enables IRQ */
 806         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 807                 rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i], GFP_ATOMIC);
 808                 if (rc) {
 809                         cx231xx_err("submit of urb %i failed (error=%i)\n", i,
 810                                    rc);
 811                         cx231xx_uninit_isoc(dev);
 812                         return rc;
 813                 }
 814         }
 815
 816     cx231xx_capture_start(dev, 1, Raw_Video);
 817
 818         return 0;
 819 }
 820 EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
 821
 822 /************************************************************************************
 823 *                          Device Init/UnInit functions                             *
 824 *************************************************************************************/
 825 int cx231xx_dev_init(struct cx231xx *dev)
 826 {
 827     int errCode = 0;
 828
 829     /* Initialize I2C bus */
 830
 831         /* External Master 1 Bus */
 832         dev->i2c_bus[0].nr = 0;
 833         dev->i2c_bus[0].dev = dev;
 834         dev->i2c_bus[0].i2c_period = I2C_SPEED_1M;  /* 1MHz */
 835     dev->i2c_bus[0].i2c_nostop = 0;
 836     dev->i2c_bus[0].i2c_reserve = 0;
 837
 838         /* External Master 2 Bus */
 839         dev->i2c_bus[1].nr = 1;
 840         dev->i2c_bus[1].dev = dev;
 841         dev->i2c_bus[1].i2c_period =  I2C_SPEED_1M;  /* 1MHz */
 842     dev->i2c_bus[1].i2c_nostop = 0;
 843     dev->i2c_bus[1].i2c_reserve = 0;
 844
 845         /* Internal Master 3 Bus */
 846         dev->i2c_bus[2].nr = 2;
 847         dev->i2c_bus[2].dev = dev;
 848         dev->i2c_bus[2].i2c_period = I2C_SPEED_400K; /* 400kHz */
 849     dev->i2c_bus[2].i2c_nostop = 0;
 850     dev->i2c_bus[2].i2c_reserve = 0;
 851
 852     /* register I2C buses */
 853         cx231xx_i2c_register(&dev->i2c_bus[0]);
 854         cx231xx_i2c_register(&dev->i2c_bus[1]);
 855         cx231xx_i2c_register(&dev->i2c_bus[2]);
 856
 857     /* init hardware */
 858     /* Note : with out calling set power mode function, colibri can not be set up correctly */
 859     errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
 860     if (errCode < 0) {
 861         cx231xx_errdev("%s: cx231xx_set_power_mode : Failed to set Power - errCode [%d]!\n",
 862                         __func__, errCode);
 863                 return errCode;
 864         }
 865
 866     /* initialize Colibri block */
 867     errCode = cx231xx_colibri_init_super_block(dev, 0x23c);
 868         if (errCode < 0) {
 869                 cx231xx_errdev("%s: cx231xx_colibri init super block - errCode [%d]!\n",
 870                         __func__, errCode);
 871                 return errCode;
 872         }
 873     errCode = cx231xx_colibri_init_channels(dev);
 874     if (errCode < 0) {
 875                 cx231xx_errdev("%s: cx231xx_colibri init channels - errCode [%d]!\n",
 876                         __func__, errCode);
 877                 return errCode;
 878         }
 879
 880     /* Set DIF in By pass mode */
 881     errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
 882     if (errCode < 0) {
 883                 cx231xx_errdev("%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
 884                         __func__, errCode);
 885                 return errCode;
 886         }
 887
 888     /* flatiron related functions */
 889     errCode = cx231xx_flatiron_initialize(dev);
 890     if (errCode < 0) {
 891                 cx231xx_errdev("%s: cx231xx_flatiron initialize - errCode [%d]!\n",
 892                         __func__, errCode);
 893                 return errCode;
 894         }
 895
 896     /* init control pins */
 897     errCode = cx231xx_init_ctrl_pin_status(dev);
 898     if (errCode < 0) {
 899                 cx231xx_errdev("%s: cx231xx_init ctrl pins - errCode [%d]!\n",
 900                         __func__, errCode);
 901                 return errCode;
 902         }
 903
 904     /* set AGC mode to Analog */
 905     errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
 906     if (errCode < 0) {
 907                 cx231xx_errdev("%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
 908                         __func__, errCode);
 909                 return errCode;
 910         }
 911
 912     /* set all alternate settings to zero initially */
 913     cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
 914     cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
 915     cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
 916     if(dev->board.has_dvb)
 917         cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
 918
 919     /* set the I2C master port to 3 on channel 1 */
 920     errCode = cx231xx_enable_i2c_for_tuner(dev, I2C_3);
 921
 922         return errCode;
 923 }
 924 EXPORT_SYMBOL_GPL(cx231xx_dev_init);
 925
 926 void cx231xx_dev_uninit(struct cx231xx *dev)
 927 {
 928     /* Un Initialize I2C bus */
 929         cx231xx_i2c_unregister(&dev->i2c_bus[2]);
 930         cx231xx_i2c_unregister(&dev->i2c_bus[1]);
 931         cx231xx_i2c_unregister(&dev->i2c_bus[0]);
 932 }
 933 EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
 934
 935
 936 /************************************************************************************
 937 *                              G P I O related functions                            *
 938 *************************************************************************************/
 939 int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8* gpio_val,
 940                           u8 len, u8 request, u8 direction)
 941 {
 942     int status = 0;
 943     VENDOR_REQUEST_IN ven_req;
 944
 945     /* Set wValue */
 946     ven_req.wValue = (u16)(gpio_bit>>16 & 0xffff);
 947
 948     /* set request */
 949     if(!request){
 950         if(direction)
 951             ven_req.bRequest = VRT_GET_GPIO; /* 0x8 gpio */
 952         else
 953             ven_req.bRequest = VRT_SET_GPIO; /* 0x9 gpio */
 954     }
 955     else {
 956         if(direction)
 957             ven_req.bRequest = VRT_GET_GPIE; /* 0xa gpie */
 958         else
 959             ven_req.bRequest = VRT_SET_GPIE; /* 0xb gpie */
 960     }
 961
 962     /* set index value */
 963     ven_req.wIndex = (u16)(gpio_bit & 0xffff);
 964
 965     /* set wLength value */
 966     ven_req.wLength = len;
 967
 968     /* set bData value */
 969     ven_req.bData = 0;
 970
 971         /* set the buffer for read / write */
 972     ven_req.pBuff = gpio_val;
 973
 974     /* set the direction */
 975     if(direction){
 976         ven_req.direction = USB_DIR_IN;
 977         memset(ven_req.pBuff, 0x00, ven_req.wLength);
 978     }
 979     else
 980         ven_req.direction = USB_DIR_OUT;
 981
 982
 983
 984     /* call common vendor command request */
 985     status = cx231xx_send_vendor_cmd(dev, &ven_req);
 986     if (status < 0)
 987     {
 988         cx231xx_info("UsbInterface::sendCommand, output buffer failed with status -%d\n", status);
 989     }
 990
 991     return status;
 992 }
 993
 994 EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
 995
 996 /*************************************************************************************
 997  *               C O N T R O L - Register R E A D / W R I T E functions              *
 998  *************************************************************************************/
 999 int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
1000 {
1001     u8  value[4] = {0x0, 0x0, 0x0, 0x0};
1002     u32 tmp =0;
1003     int status = 0;
1004
1005     status = cx231xx_read_ctrl_reg(dev,VRT_GET_REGISTER, address,value,4);
1006     if(status < 0)
1007         return status;
1008
1009     tmp = *((u32 *)value);
1010     tmp |= mode;
1011
1012     value[0]=(u8) tmp;
1013     value[1]=(u8)(tmp>>8);
1014     value[2]=(u8)(tmp>>16);
1015     value[3]=(u8)(tmp>>24);
1016
1017     status = cx231xx_write_ctrl_reg(dev,VRT_SET_REGISTER, address,value,4);
1018
1019     return status;
1020 }
1021
1022 /*************************************************************************************
1023  *                      I 2 C Internal C O N T R O L   functions                     *
1024  *************************************************************************************/
1025 int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1026                            u8 saddr_len, u32 *data, u8 data_len)
1027 {
1028     int status = 0;
1029     struct cx231xx_i2c_xfer_data req_data;
1030     u8 value[4] ={0,0,0,0};
1031
1032     if(saddr_len == 0)
1033         saddr = 0;
1034     else if(saddr_len == 0)
1035         saddr &= 0xff;
1036
1037     /* prepare xfer_data struct */
1038     req_data.dev_addr = dev_addr >> 1;
1039     req_data.direction = I2C_M_RD;
1040     req_data.saddr_len = saddr_len;
1041     req_data.saddr_dat = saddr;
1042     req_data.buf_size = data_len;
1043     req_data.p_buffer = (u8*)value;
1044
1045     /* usb send command */
1046     status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1047
1048     if(status >= 0)
1049     {
1050         /* Copy the data read back to main buffer */
1051         if(data_len == 1)
1052             *data = value[0];
1053         else
1054             *data = value[0] | value[1] << 8 | value[2] << 16 | value[3] << 24;
1055     }
1056
1057     return status;
1058 }
1059
1060 int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1061                            u8 saddr_len, u32 data, u8 data_len)
1062 {
1063     int status = 0;
1064     u8 value[4] ={0,0,0,0};
1065     struct cx231xx_i2c_xfer_data req_data;
1066
1067     value[0]=(u8)data;
1068     value[1]=(u8)(data>>8);
1069     value[2]=(u8)(data>>16);
1070     value[3]=(u8)(data>>24);
1071
1072     if(saddr_len == 0)
1073         saddr = 0;
1074     else if(saddr_len == 0)
1075         saddr &= 0xff;
1076
1077     /* prepare xfer_data struct */
1078     req_data.dev_addr = dev_addr >> 1;
1079     req_data.direction = 0;
1080     req_data.saddr_len = saddr_len;
1081     req_data.saddr_dat = saddr;
1082     req_data.buf_size = data_len;
1083     req_data.p_buffer = value;
1084
1085     /* usb send command */
1086     status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1087
1088     return status;
1089 }
1090
1091 int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size, u16 register_address,
1092                            u8 bit_start,u8 bit_end, u32 value)
1093 {
1094     int status = 0;
1095     u32 tmp;
1096     u32 mask = 0;
1097     int i;
1098
1099     if (bit_start>(size-1) || bit_end>(size-1)) {
1100         return -1;
1101     }
1102
1103     if (size==8){
1104         status = cx231xx_read_i2c_data(dev, dev_addr, register_address, 2, &tmp, 1);
1105     } else {
1106         status = cx231xx_read_i2c_data(dev, dev_addr, register_address, 2, &tmp, 4);
1107     }
1108
1109     if (status < 0) {
1110         return status;
1111     }
1112
1113     mask = 1<<bit_end;
1114     for (i=bit_end; i>bit_start&&i>0; i--) {
1115         mask = mask + (1<<(i-1));
1116     }
1117
1118     value <<= bit_start;
1119
1120     if (size==8)
1121     {
1122         tmp &=  ~mask;
1123         tmp |=  value;
1124         tmp &= 0xff;
1125         status = cx231xx_write_i2c_data(dev, dev_addr, register_address, 2, tmp, 1);
1126     }
1127     else
1128     {
1129         tmp &=  ~mask;
1130         tmp |=  value;
1131         status = cx231xx_write_i2c_data(dev, dev_addr, register_address, 2, tmp, 4);
1132     }
1133
1134     return status;
1135 }
1136
1137
1138
1139 int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
1140                                        u16 saddr, u32 mask, u32 value)
1141 {
1142     u32   temp;
1143     int status = 0;
1144
1145     status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
1146
1147     if(status < 0)
1148         return status;
1149
1150     temp &= ~mask;
1151     temp |= value;
1152
1153     status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
1154
1155     return status;
1156 }
1157
1158 u32 cx231xx_set_field(u32 field_mask, u32 data)
1159 {
1160    u32 temp;
1161
1162    for (temp = field_mask; (temp & 1) == 0; temp >>= 1) {
1163       data <<= 1;
1164    }
1165
1166    return data;
1167 }