Pileus Git - ~andy/linux/blob - 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 *                              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         cx231xx_info("Cx231xx: Initialized (%s) extension\n", ops->name);
 129         mutex_unlock(&cx231xx_extension_devlist_lock);
 130         mutex_unlock(&cx231xx_devlist_mutex);
 131         return 0;
 132 }
 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
 153 EXPORT_SYMBOL(cx231xx_unregister_extension);
 154
 155 void cx231xx_init_extension(struct cx231xx *dev)
 156 {
 157         struct cx231xx_ops *ops = NULL;
 158
 159         mutex_lock(&cx231xx_extension_devlist_lock);
 160         if (!list_empty(&cx231xx_extension_devlist)) {
 161                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 162                         if (ops->init)
 163                                 ops->init(dev);
 164                 }
 165         }
 166         mutex_unlock(&cx231xx_extension_devlist_lock);
 167 }
 168
 169 void cx231xx_close_extension(struct cx231xx *dev)
 170 {
 171         struct cx231xx_ops *ops = NULL;
 172
 173         mutex_lock(&cx231xx_extension_devlist_lock);
 174         if (!list_empty(&cx231xx_extension_devlist)) {
 175                 list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
 176                         if (ops->fini)
 177                                 ops->fini(dev);
 178                 }
 179         }
 180         mutex_unlock(&cx231xx_extension_devlist_lock);
 181 }
 182
 183 /************************************************************************************
 184 *                              U S B related functions                              *
 185 *************************************************************************************/
 186 int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
 187                              struct cx231xx_i2c_xfer_data *req_data)
 188 {
 189         int status = 0;
 190         struct cx231xx *dev = i2c_bus->dev;
 191         VENDOR_REQUEST_IN ven_req;
 192
 193         u8 saddr_len = 0;
 194         u8 _i2c_period = 0;
 195         u8 _i2c_nostop = 0;
 196         u8 _i2c_reserve = 0;
 197
 198         /* Get the I2C period, nostop and reserve parameters */
 199         _i2c_period = i2c_bus->i2c_period;
 200         _i2c_nostop = i2c_bus->i2c_nostop;
 201         _i2c_reserve = i2c_bus->i2c_reserve;
 202
 203         saddr_len = req_data->saddr_len;
 204
 205         /* Set wValue */
 206         if (saddr_len == 1)     /* need check saddr_len == 0  */
 207                 ven_req.wValue =
 208                     req_data->
 209                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 210                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 211         else
 212                 ven_req.wValue =
 213                     req_data->
 214                     dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 |
 215                     _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6;
 216
 217         /* set channel number */
 218         if (req_data->direction & I2C_M_RD)
 219                 ven_req.bRequest = i2c_bus->nr + 4;     /* channel number, for read,
 220                                                            spec required channel_num +4 */
 221         else
 222                 ven_req.bRequest = i2c_bus->nr; /* channel number,  */
 223
 224         /* set index value */
 225         switch (saddr_len) {
 226         case 0:
 227                 ven_req.wIndex = 0;     /* need check */
 228                 break;
 229         case 1:
 230                 ven_req.wIndex = (req_data->saddr_dat & 0xff);
 231                 break;
 232         case 2:
 233                 ven_req.wIndex = req_data->saddr_dat;
 234                 break;
 235         }
 236
 237         /* set wLength value */
 238         ven_req.wLength = req_data->buf_size;
 239
 240         /* set bData value */
 241         ven_req.bData = 0;
 242
 243         /* set the direction */
 244         if (req_data->direction) {
 245                 ven_req.direction = USB_DIR_IN;
 246                 memset(req_data->p_buffer, 0x00, ven_req.wLength);
 247         } else
 248                 ven_req.direction = USB_DIR_OUT;
 249
 250         /* set the buffer for read / write */
 251         ven_req.pBuff = req_data->p_buffer;
 252
 253
 254         /* call common vendor command request */
 255         status = cx231xx_send_vendor_cmd(dev, &ven_req);
 256         if (status < 0) {
 257                 cx231xx_info
 258                     ("UsbInterface::sendCommand, output buffer failed with status -%d\n",
 259                      status);
 260         }
 261
 262         return status;
 263 }
 264
 265 EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
 266 /*
 267  * cx231xx_read_ctrl_reg()
 268  * reads data from the usb device specifying bRequest and wValue
 269  */
 270 int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
 271                           char *buf, int len)
 272 {
 273         u8 val = 0;
 274         int ret;
 275         int pipe = usb_rcvctrlpipe(dev->udev, 0);
 276
 277         if (dev->state & DEV_DISCONNECTED)
 278                 return -ENODEV;
 279
 280         if (len > URB_MAX_CTRL_SIZE)
 281                 return -EINVAL;
 282
 283         switch (len) {
 284         case 1:
 285                 val = ENABLE_ONE_BYTE;
 286                 break;
 287         case 2:
 288                 val = ENABLE_TWE_BYTE;
 289                 break;
 290         case 3:
 291                 val = ENABLE_THREE_BYTE;
 292                 break;
 293         case 4:
 294                 val = ENABLE_FOUR_BYTE;
 295                 break;
 296         default:
 297                 val = 0xFF;     /* invalid option */
 298         }
 299
 300         if (val == 0xFF)
 301                 return -EINVAL;
 302
 303         if (reg_debug) {
 304                 cx231xx_isocdbg("(pipe 0x%08x): "
 305                                 "IN:  %02x %02x %02x %02x %02x %02x %02x %02x ",
 306                                 pipe,
 307                                 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 308                                 req, 0, val,
 309                                 reg & 0xff, reg >> 8, len & 0xff, len >> 8);
 310         }
 311
 312         /* mutex_lock(&dev->ctrl_urb_lock);  */
 313         ret = usb_control_msg(dev->udev, pipe, req,
 314                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 315                               val, reg, dev->urb_buf, len, HZ);
 316         if (ret < 0) {
 317                 cx231xx_isocdbg(" failed!\n");
 318                 /* mutex_unlock(&dev->ctrl_urb_lock); */
 319                 return ret;
 320         }
 321
 322         if (len)
 323                 memcpy(buf, dev->urb_buf, len);
 324
 325         /* mutex_unlock(&dev->ctrl_urb_lock); */
 326
 327         if (reg_debug) {
 328                 int byte;
 329
 330                 cx231xx_isocdbg("<<<");
 331                 for (byte = 0; byte < len; byte++)
 332                         cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
 333                 cx231xx_isocdbg("\n");
 334         }
 335
 336         return ret;
 337 }
 338
 339 int cx231xx_send_vendor_cmd(struct cx231xx *dev, 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 |
 427                                 USB_RECIP_DEVICE, 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 alternate %d with wMaxPacketSize=%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 alternate 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                     ("cannot change interface %d alternate number to %d : Max. Pkt size is ZERO\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                             ("cannot change interface %d alternate number to %d (error=%i)\n",
 586                              usb_interface_index, alt, status);
 587                         return status;
 588                 }
 589         }
 590
 591         return status;
 592 }
 593
 594 EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
 595
 596 int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
 597 {
 598         int rc = 0;
 599
 600         if (!gpio)
 601                 return rc;
 602
 603         /* Send GPIO reset sequences specified at board entry */
 604         while (gpio->sleep >= 0) {
 605                 rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val);
 606                 if (rc < 0)
 607                         return rc;
 608
 609                 if (gpio->sleep > 0)
 610                         msleep(gpio->sleep);
 611
 612                 gpio++;
 613         }
 614         return rc;
 615 }
 616
 617 int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
 618 {
 619         if (dev->mode == set_mode)
 620                 return 0;
 621
 622         if (set_mode == CX231XX_SUSPEND) {
 623                 /* Set the chip in power saving mode */
 624                 dev->mode = set_mode;
 625         }
 626
 627         /* Resource is locked */
 628         if (dev->mode != CX231XX_SUSPEND)
 629                 return -EINVAL;
 630
 631         dev->mode = set_mode;
 632
 633         if (dev->mode == CX231XX_DIGITAL_MODE) {
 634                 /* Set Digital power mode */
 635         } else {
 636                 /* Set Analog Power mode */
 637         }
 638         return 0;
 639 }
 640
 641 EXPORT_SYMBOL_GPL(cx231xx_set_mode);
 642
 643 /************************************************************************************
 644 *                               URB Streaming functions                             *
 645 *************************************************************************************/
 646
 647 /*
 648  * IRQ callback, called by URB callback
 649  */
 650 static void cx231xx_irq_callback(struct urb *urb)
 651 {
 652         struct cx231xx_dmaqueue *dma_q = urb->context;
 653         struct cx231xx_video_mode *vmode =
 654             container_of(dma_q, struct cx231xx_video_mode, vidq);
 655         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 656         int rc, i;
 657
 658         switch (urb->status) {
 659         case 0:         /* success */
 660         case -ETIMEDOUT:        /* NAK */
 661                 break;
 662         case -ECONNRESET:       /* kill */
 663         case -ENOENT:
 664         case -ESHUTDOWN:
 665                 return;
 666         default:                /* error */
 667                 cx231xx_isocdbg("urb completition error %d.\n", urb->status);
 668                 break;
 669         }
 670
 671         /* Copy data from URB */
 672         spin_lock(&dev->video_mode.slock);
 673         rc = dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
 674         spin_unlock(&dev->video_mode.slock);
 675
 676         /* Reset urb buffers */
 677         for (i = 0; i < urb->number_of_packets; i++) {
 678                 urb->iso_frame_desc[i].status = 0;
 679                 urb->iso_frame_desc[i].actual_length = 0;
 680         }
 681         urb->status = 0;
 682
 683         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 684         if (urb->status) {
 685                 cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
 686                                 urb->status);
 687         }
 688 }
 689
 690 /*
 691  * Stop and Deallocate URBs
 692  */
 693 void cx231xx_uninit_isoc(struct cx231xx *dev)
 694 {
 695         struct urb *urb;
 696         int i;
 697
 698         cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
 699
 700         dev->video_mode.isoc_ctl.nfields = -1;
 701         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 702                 urb = dev->video_mode.isoc_ctl.urb[i];
 703                 if (urb) {
 704                         if (!irqs_disabled())
 705                                 usb_kill_urb(urb);
 706                         else
 707                                 usb_unlink_urb(urb);
 708
 709                         if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 710                                 usb_buffer_free(dev->udev,
 711                                                 urb->transfer_buffer_length,
 712                                                 dev->video_mode.isoc_ctl.
 713                                                 transfer_buffer[i],
 714                                                 urb->transfer_dma);
 715                         }
 716                         usb_free_urb(urb);
 717                         dev->video_mode.isoc_ctl.urb[i] = NULL;
 718                 }
 719                 dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
 720         }
 721
 722         kfree(dev->video_mode.isoc_ctl.urb);
 723         kfree(dev->video_mode.isoc_ctl.transfer_buffer);
 724
 725         dev->video_mode.isoc_ctl.urb = NULL;
 726         dev->video_mode.isoc_ctl.transfer_buffer = NULL;
 727         dev->video_mode.isoc_ctl.num_bufs = 0;
 728
 729         cx231xx_capture_start(dev, 0, Raw_Video);
 730 }
 731
 732 EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
 733
 734 /*
 735  * Allocate URBs and start IRQ
 736  */
 737 int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
 738                       int num_bufs, int max_pkt_size,
 739                       int (*isoc_copy) (struct cx231xx * dev, struct urb * urb))
 740 {
 741         struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
 742         int i;
 743         int sb_size, pipe;
 744         struct urb *urb;
 745         int j, k;
 746         int rc;
 747
 748         cx231xx_isocdbg("cx231xx: called cx231xx_prepare_isoc\n");
 749
 750         dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
 751
 752         cx231xx_info("Setting Video mux to %d\n", dev->video_input);
 753         video_mux(dev, dev->video_input);
 754
 755         /* De-allocates all pending stuff */
 756         cx231xx_uninit_isoc(dev);
 757
 758         dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
 759         dev->video_mode.isoc_ctl.num_bufs = num_bufs;
 760         dma_q->pos = 0;
 761         dma_q->is_partial_line = 0;
 762         dma_q->last_sav = 0;
 763         dma_q->current_field = -1;
 764         dma_q->field1_done = 0;
 765         dma_q->lines_per_field = dev->height / 2;
 766         dma_q->bytes_left_in_line = dev->width << 1;
 767         dma_q->lines_completed = 0;
 768         for (i = 0; i < 8; i++)
 769                 dma_q->partial_buf[i] = 0;
 770
 771         dev->video_mode.isoc_ctl.urb =
 772             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 773         if (!dev->video_mode.isoc_ctl.urb) {
 774                 cx231xx_errdev("cannot alloc memory for usb buffers\n");
 775                 return -ENOMEM;
 776         }
 777
 778         dev->video_mode.isoc_ctl.transfer_buffer =
 779             kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL);
 780         if (!dev->video_mode.isoc_ctl.transfer_buffer) {
 781                 cx231xx_errdev("cannot allocate memory for usbtransfer\n");
 782                 kfree(dev->video_mode.isoc_ctl.urb);
 783                 return -ENOMEM;
 784         }
 785
 786         dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
 787         dev->video_mode.isoc_ctl.buf = NULL;
 788
 789         sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
 790
 791         /* allocate urbs and transfer buffers */
 792         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 793                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 794                 if (!urb) {
 795                         cx231xx_err("cannot alloc isoc_ctl.urb %i\n", i);
 796                         cx231xx_uninit_isoc(dev);
 797                         return -ENOMEM;
 798                 }
 799                 dev->video_mode.isoc_ctl.urb[i] = urb;
 800
 801                 dev->video_mode.isoc_ctl.transfer_buffer[i] =
 802                     usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL,
 803                                      &urb->transfer_dma);
 804                 if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
 805                         cx231xx_err("unable to allocate %i bytes for transfer"
 806                                     " buffer %i%s\n",
 807                                     sb_size, i,
 808                                     in_interrupt()? " while in int" : "");
 809                         cx231xx_uninit_isoc(dev);
 810                         return -ENOMEM;
 811                 }
 812                 memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
 813
 814                 pipe =
 815                     usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
 816
 817                 usb_fill_int_urb(urb, dev->udev, pipe,
 818                                  dev->video_mode.isoc_ctl.transfer_buffer[i],
 819                                  sb_size, cx231xx_irq_callback, dma_q, 1);
 820
 821                 urb->number_of_packets = max_packets;
 822                 urb->transfer_flags = URB_ISO_ASAP;
 823
 824                 k = 0;
 825                 for (j = 0; j < max_packets; j++) {
 826                         urb->iso_frame_desc[j].offset = k;
 827                         urb->iso_frame_desc[j].length =
 828                             dev->video_mode.isoc_ctl.max_pkt_size;
 829                         k += dev->video_mode.isoc_ctl.max_pkt_size;
 830                 }
 831         }
 832
 833         init_waitqueue_head(&dma_q->wq);
 834
 835         /* submit urbs and enables IRQ */
 836         for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 837                 rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i],
 838                                     GFP_ATOMIC);
 839                 if (rc) {
 840                         cx231xx_err("submit of urb %i failed (error=%i)\n", i,
 841                                     rc);
 842                         cx231xx_uninit_isoc(dev);
 843                         return rc;
 844                 }
 845         }
 846
 847         cx231xx_capture_start(dev, 1, Raw_Video);
 848
 849         return 0;
 850 }
 851
 852 EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
 853
 854 /************************************************************************************
 855 *                          Device Init/UnInit functions                             *
 856 *************************************************************************************/
 857 int cx231xx_dev_init(struct cx231xx *dev)
 858 {
 859         int errCode = 0;
 860
 861         /* Initialize I2C bus */
 862
 863         /* External Master 1 Bus */
 864         dev->i2c_bus[0].nr = 0;
 865         dev->i2c_bus[0].dev = dev;
 866         dev->i2c_bus[0].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 867         dev->i2c_bus[0].i2c_nostop = 0;
 868         dev->i2c_bus[0].i2c_reserve = 0;
 869
 870         /* External Master 2 Bus */
 871         dev->i2c_bus[1].nr = 1;
 872         dev->i2c_bus[1].dev = dev;
 873         dev->i2c_bus[1].i2c_period = I2C_SPEED_1M;      /* 1MHz */
 874         dev->i2c_bus[1].i2c_nostop = 0;
 875         dev->i2c_bus[1].i2c_reserve = 0;
 876
 877         /* Internal Master 3 Bus */
 878         dev->i2c_bus[2].nr = 2;
 879         dev->i2c_bus[2].dev = dev;
 880         dev->i2c_bus[2].i2c_period = I2C_SPEED_400K;    /* 400kHz */
 881         dev->i2c_bus[2].i2c_nostop = 0;
 882         dev->i2c_bus[2].i2c_reserve = 0;
 883
 884         /* register I2C buses */
 885         cx231xx_i2c_register(&dev->i2c_bus[0]);
 886         cx231xx_i2c_register(&dev->i2c_bus[1]);
 887         cx231xx_i2c_register(&dev->i2c_bus[2]);
 888
 889         /* init hardware */
 890         /* Note : with out calling set power mode function, colibri can not be set up correctly */
 891         errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
 892         if (errCode < 0) {
 893                 cx231xx_errdev
 894                     ("%s: cx231xx_set_power_mode : Failed to set Power - errCode [%d]!\n",
 895                      __func__, errCode);
 896                 return errCode;
 897         }
 898
 899         /* initialize Colibri block */
 900         errCode = cx231xx_colibri_init_super_block(dev, 0x23c);
 901         if (errCode < 0) {
 902                 cx231xx_errdev
 903                     ("%s: cx231xx_colibri init super block - errCode [%d]!\n",
 904                      __func__, errCode);
 905                 return errCode;
 906         }
 907         errCode = cx231xx_colibri_init_channels(dev);
 908         if (errCode < 0) {
 909                 cx231xx_errdev
 910                     ("%s: cx231xx_colibri init channels - errCode [%d]!\n",
 911                      __func__, errCode);
 912                 return errCode;
 913         }
 914
 915         /* Set DIF in By pass mode */
 916         errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
 917         if (errCode < 0) {
 918                 cx231xx_errdev
 919                     ("%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
 920                      __func__, errCode);
 921                 return errCode;
 922         }
 923
 924         /* flatiron related functions */
 925         errCode = cx231xx_flatiron_initialize(dev);
 926         if (errCode < 0) {
 927                 cx231xx_errdev
 928                     ("%s: cx231xx_flatiron initialize - errCode [%d]!\n",
 929                      __func__, errCode);
 930                 return errCode;
 931         }
 932
 933         /* init control pins */
 934         errCode = cx231xx_init_ctrl_pin_status(dev);
 935         if (errCode < 0) {
 936                 cx231xx_errdev("%s: cx231xx_init ctrl pins - errCode [%d]!\n",
 937                                __func__, errCode);
 938                 return errCode;
 939         }
 940
 941         /* set AGC mode to Analog */
 942         errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
 943         if (errCode < 0) {
 944                 cx231xx_errdev
 945                     ("%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
 946                      __func__, errCode);
 947                 return errCode;
 948         }
 949
 950         /* set all alternate settings to zero initially */
 951         cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
 952         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
 953         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
 954         if (dev->board.has_dvb)
 955                 cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
 956
 957         /* set the I2C master port to 3 on channel 1 */
 958         errCode = cx231xx_enable_i2c_for_tuner(dev, I2C_3);
 959
 960         return errCode;
 961 }
 962
 963 EXPORT_SYMBOL_GPL(cx231xx_dev_init);
 964
 965 void cx231xx_dev_uninit(struct cx231xx *dev)
 966 {
 967         /* Un Initialize I2C bus */
 968         cx231xx_i2c_unregister(&dev->i2c_bus[2]);
 969         cx231xx_i2c_unregister(&dev->i2c_bus[1]);
 970         cx231xx_i2c_unregister(&dev->i2c_bus[0]);
 971 }
 972
 973 EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
 974
 975 /************************************************************************************
 976 *                              G P I O related functions                            *
 977 *************************************************************************************/
 978 int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 * gpio_val,
 979                           u8 len, u8 request, u8 direction)
 980 {
 981         int status = 0;
 982         VENDOR_REQUEST_IN ven_req;
 983
 984         /* Set wValue */
 985         ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff);
 986
 987         /* set request */
 988         if (!request) {
 989                 if (direction)
 990                         ven_req.bRequest = VRT_GET_GPIO;        /* 0x8 gpio */
 991                 else
 992                         ven_req.bRequest = VRT_SET_GPIO;        /* 0x9 gpio */
 993         } else {
 994                 if (direction)
 995                         ven_req.bRequest = VRT_GET_GPIE;        /* 0xa gpie */
 996                 else
 997                         ven_req.bRequest = VRT_SET_GPIE;        /* 0xb gpie */
 998         }
 999
1000         /* set index value */
1001         ven_req.wIndex = (u16) (gpio_bit & 0xffff);
1002
1003         /* set wLength value */
1004         ven_req.wLength = len;
1005
1006         /* set bData value */
1007         ven_req.bData = 0;
1008
1009         /* set the buffer for read / write */
1010         ven_req.pBuff = gpio_val;
1011
1012         /* set the direction */
1013         if (direction) {
1014                 ven_req.direction = USB_DIR_IN;
1015                 memset(ven_req.pBuff, 0x00, ven_req.wLength);
1016         } else
1017                 ven_req.direction = USB_DIR_OUT;
1018
1019
1020         /* call common vendor command request */
1021         status = cx231xx_send_vendor_cmd(dev, &ven_req);
1022         if (status < 0) {
1023                 cx231xx_info
1024                     ("UsbInterface::sendCommand, output buffer failed with status -%d\n",
1025                      status);
1026         }
1027
1028         return status;
1029 }
1030
1031 EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
1032
1033 /*************************************************************************************
1034  *               C O N T R O L - Register R E A D / W R I T E functions              *
1035  *************************************************************************************/
1036 int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
1037 {
1038         u8 value[4] = { 0x0, 0x0, 0x0, 0x0 };
1039         u32 tmp = 0;
1040         int status = 0;
1041
1042         status =
1043             cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4);
1044         if (status < 0)
1045                 return status;
1046
1047         tmp = *((u32 *) value);
1048         tmp |= mode;
1049
1050         value[0] = (u8) tmp;
1051         value[1] = (u8) (tmp >> 8);
1052         value[2] = (u8) (tmp >> 16);
1053         value[3] = (u8) (tmp >> 24);
1054
1055         status =
1056             cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4);
1057
1058         return status;
1059 }
1060
1061 /*************************************************************************************
1062  *                      I 2 C Internal C O N T R O L   functions                     *
1063  *************************************************************************************/
1064 int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1065                           u8 saddr_len, u32 * data, u8 data_len)
1066 {
1067         int status = 0;
1068         struct cx231xx_i2c_xfer_data req_data;
1069         u8 value[4] = { 0, 0, 0, 0 };
1070
1071         if (saddr_len == 0)
1072                 saddr = 0;
1073         else if (saddr_len == 0)
1074                 saddr &= 0xff;
1075
1076         /* prepare xfer_data struct */
1077         req_data.dev_addr = dev_addr >> 1;
1078         req_data.direction = I2C_M_RD;
1079         req_data.saddr_len = saddr_len;
1080         req_data.saddr_dat = saddr;
1081         req_data.buf_size = data_len;
1082         req_data.p_buffer = (u8 *) value;
1083
1084         /* usb send command */
1085         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1086
1087         if (status >= 0) {
1088                 /* Copy the data read back to main buffer */
1089                 if (data_len == 1)
1090                         *data = value[0];
1091                 else
1092                         *data =
1093                             value[0] | value[1] << 8 | value[2] << 16 | value[3]
1094                             << 24;
1095         }
1096
1097         return status;
1098 }
1099
1100 int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
1101                            u8 saddr_len, u32 data, u8 data_len)
1102 {
1103         int status = 0;
1104         u8 value[4] = { 0, 0, 0, 0 };
1105         struct cx231xx_i2c_xfer_data req_data;
1106
1107         value[0] = (u8) data;
1108         value[1] = (u8) (data >> 8);
1109         value[2] = (u8) (data >> 16);
1110         value[3] = (u8) (data >> 24);
1111
1112         if (saddr_len == 0)
1113                 saddr = 0;
1114         else if (saddr_len == 0)
1115                 saddr &= 0xff;
1116
1117         /* prepare xfer_data struct */
1118         req_data.dev_addr = dev_addr >> 1;
1119         req_data.direction = 0;
1120         req_data.saddr_len = saddr_len;
1121         req_data.saddr_dat = saddr;
1122         req_data.buf_size = data_len;
1123         req_data.p_buffer = value;
1124
1125         /* usb send command */
1126         status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
1127
1128         return status;
1129 }
1130
1131 int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
1132                            u16 register_address, u8 bit_start, u8 bit_end,
1133                            u32 value)
1134 {
1135         int status = 0;
1136         u32 tmp;
1137         u32 mask = 0;
1138         int i;
1139
1140         if (bit_start > (size - 1) || bit_end > (size - 1)) {
1141                 return -1;
1142         }
1143
1144         if (size == 8) {
1145                 status =
1146                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1147                                           &tmp, 1);
1148         } else {
1149                 status =
1150                     cx231xx_read_i2c_data(dev, dev_addr, register_address, 2,
1151                                           &tmp, 4);
1152         }
1153
1154         if (status < 0) {
1155                 return status;
1156         }
1157
1158         mask = 1 << bit_end;
1159         for (i = bit_end; i > bit_start && i > 0; i--) {
1160                 mask = mask + (1 << (i - 1));
1161         }
1162
1163         value <<= bit_start;
1164
1165         if (size == 8) {
1166                 tmp &= ~mask;
1167                 tmp |= value;
1168                 tmp &= 0xff;
1169                 status =
1170                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1171                                            tmp, 1);
1172         } else {
1173                 tmp &= ~mask;
1174                 tmp |= value;
1175                 status =
1176                     cx231xx_write_i2c_data(dev, dev_addr, register_address, 2,
1177                                            tmp, 4);
1178         }
1179
1180         return status;
1181 }
1182
1183 int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
1184                                         u16 saddr, u32 mask, u32 value)
1185 {
1186         u32 temp;
1187         int status = 0;
1188
1189         status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
1190
1191         if (status < 0)
1192                 return status;
1193
1194         temp &= ~mask;
1195         temp |= value;
1196
1197         status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
1198
1199         return status;
1200 }
1201
1202 u32 cx231xx_set_field(u32 field_mask, u32 data)
1203 {
1204         u32 temp;
1205
1206         for (temp = field_mask; (temp & 1) == 0; temp >>= 1) {
1207                 data <<= 1;
1208         }
1209
1210         return data;
1211 }