drivers/media/usb/dvb-usb/technisat-usb2.c

   1 /*
   2  * Linux driver for Technisat DVB-S/S2 USB 2.0 device
   3  *
   4  * Copyright (C) 2010 Patrick Boettcher,
   5  *                    Kernel Labs Inc. PO Box 745, St James, NY 11780
   6  *
   7  * Development was sponsored by Technisat Digital UK Limited, whose
   8  * registered office is Witan Gate House 500 - 600 Witan Gate West,
   9  * Milton Keynes, MK9 1SH
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of the
  14  * License, or (at your option) any later version.
  15  *
  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  * THIS PROGRAM IS PROVIDED "AS IS" AND BOTH THE COPYRIGHT HOLDER AND
  22  * TECHNISAT DIGITAL UK LTD DISCLAIM ALL WARRANTIES WITH REGARD TO
  23  * THIS PROGRAM INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR
  24  * FITNESS FOR A PARTICULAR PURPOSE.  NEITHER THE COPYRIGHT HOLDER
  25  * NOR TECHNISAT DIGITAL UK LIMITED SHALL BE LIABLE FOR ANY SPECIAL,
  26  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  27  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  28  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  29  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS PROGRAM. See the
  30  * GNU General Public License for more details.
  31  */
  32
  33 #define DVB_USB_LOG_PREFIX "technisat-usb2"
  34 #include "dvb-usb.h"
  35
  36 #include "stv6110x.h"
  37 #include "stv090x.h"
  38
  39 /* module parameters */
  40 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  41
  42 static int debug;
  43 module_param(debug, int, 0644);
  44 MODULE_PARM_DESC(debug,
  45                 "set debugging level (bit-mask: 1=info,2=eeprom,4=i2c,8=rc)." \
  46                 DVB_USB_DEBUG_STATUS);
  47
  48 /* disables all LED control command and
  49  * also does not start the signal polling thread */
  50 static int disable_led_control;
  51 module_param(disable_led_control, int, 0444);
  52 MODULE_PARM_DESC(disable_led_control,
  53                 "disable LED control of the device "
  54                 "(default: 0 - LED control is active).");
  55
  56 /* device private data */
  57 struct technisat_usb2_state {
  58         struct dvb_usb_device *dev;
  59         struct delayed_work green_led_work;
  60         u8 power_state;
  61
  62         u16 last_scan_code;
  63
  64         u8 buf[64];
  65 };
  66
  67 /* debug print helpers */
  68 #define deb_info(args...)    dprintk(debug, 0x01, args)
  69 #define deb_eeprom(args...)  dprintk(debug, 0x02, args)
  70 #define deb_i2c(args...)     dprintk(debug, 0x04, args)
  71 #define deb_rc(args...)      dprintk(debug, 0x08, args)
  72
  73 /* vendor requests */
  74 #define SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST 0xB3
  75 #define SET_FRONT_END_RESET_VENDOR_REQUEST         0xB4
  76 #define GET_VERSION_INFO_VENDOR_REQUEST            0xB5
  77 #define SET_GREEN_LED_VENDOR_REQUEST               0xB6
  78 #define SET_RED_LED_VENDOR_REQUEST                 0xB7
  79 #define GET_IR_DATA_VENDOR_REQUEST                 0xB8
  80 #define SET_LED_TIMER_DIVIDER_VENDOR_REQUEST       0xB9
  81 #define SET_USB_REENUMERATION                      0xBA
  82
  83 /* i2c-access methods */
  84 #define I2C_SPEED_100KHZ_BIT 0x40
  85
  86 #define I2C_STATUS_NAK 7
  87 #define I2C_STATUS_OK 8
  88
  89 static int technisat_usb2_i2c_access(struct usb_device *udev,
  90                 u8 device_addr, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
  91 {
  92         u8 b[64];
  93         int ret, actual_length;
  94
  95         deb_i2c("i2c-access: %02x, tx: ", device_addr);
  96         debug_dump(tx, txlen, deb_i2c);
  97         deb_i2c(" ");
  98
  99         if (txlen > 62) {
 100                 err("i2c TX buffer can't exceed 62 bytes (dev 0x%02x)",
 101                                 device_addr);
 102                 txlen = 62;
 103         }
 104         if (rxlen > 62) {
 105                 err("i2c RX buffer can't exceed 62 bytes (dev 0x%02x)",
 106                                 device_addr);
 107                 rxlen = 62;
 108         }
 109
 110         b[0] = I2C_SPEED_100KHZ_BIT;
 111         b[1] = device_addr << 1;
 112
 113         if (rx != NULL) {
 114                 b[0] |= rxlen;
 115                 b[1] |= 1;
 116         }
 117
 118         memcpy(&b[2], tx, txlen);
 119         ret = usb_bulk_msg(udev,
 120                         usb_sndbulkpipe(udev, 0x01),
 121                         b, 2 + txlen,
 122                         NULL, 1000);
 123
 124         if (ret < 0) {
 125                 err("i2c-error: out failed %02x = %d", device_addr, ret);
 126                 return -ENODEV;
 127         }
 128
 129         ret = usb_bulk_msg(udev,
 130                         usb_rcvbulkpipe(udev, 0x01),
 131                         b, 64, &actual_length, 1000);
 132         if (ret < 0) {
 133                 err("i2c-error: in failed %02x = %d", device_addr, ret);
 134                 return -ENODEV;
 135         }
 136
 137         if (b[0] != I2C_STATUS_OK) {
 138                 err("i2c-error: %02x = %d", device_addr, b[0]);
 139                 /* handle tuner-i2c-nak */
 140                 if (!(b[0] == I2C_STATUS_NAK &&
 141                                 device_addr == 0x60
 142                                 /* && device_is_technisat_usb2 */))
 143                         return -ENODEV;
 144         }
 145
 146         deb_i2c("status: %d, ", b[0]);
 147
 148         if (rx != NULL) {
 149                 memcpy(rx, &b[2], rxlen);
 150
 151                 deb_i2c("rx (%d): ", rxlen);
 152                 debug_dump(rx, rxlen, deb_i2c);
 153         }
 154
 155         deb_i2c("\n");
 156
 157         return 0;
 158 }
 159
 160 static int technisat_usb2_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
 161                                 int num)
 162 {
 163         int ret = 0, i;
 164         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 165
 166         /* Ensure nobody else hits the i2c bus while we're sending our
 167            sequence of messages, (such as the remote control thread) */
 168         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 169                 return -EAGAIN;
 170
 171         for (i = 0; i < num; i++) {
 172                 if (i+1 < num && msg[i+1].flags & I2C_M_RD) {
 173                         ret = technisat_usb2_i2c_access(d->udev, msg[i+1].addr,
 174                                                 msg[i].buf, msg[i].len,
 175                                                 msg[i+1].buf, msg[i+1].len);
 176                         if (ret != 0)
 177                                 break;
 178                         i++;
 179                 } else {
 180                         ret = technisat_usb2_i2c_access(d->udev, msg[i].addr,
 181                                                 msg[i].buf, msg[i].len,
 182                                                 NULL, 0);
 183                         if (ret != 0)
 184                                 break;
 185                 }
 186         }
 187
 188         if (ret == 0)
 189                 ret = i;
 190
 191         mutex_unlock(&d->i2c_mutex);
 192
 193         return ret;
 194 }
 195
 196 static u32 technisat_usb2_i2c_func(struct i2c_adapter *adapter)
 197 {
 198         return I2C_FUNC_I2C;
 199 }
 200
 201 static struct i2c_algorithm technisat_usb2_i2c_algo = {
 202         .master_xfer   = technisat_usb2_i2c_xfer,
 203         .functionality = technisat_usb2_i2c_func,
 204 };
 205
 206 #if 0
 207 static void technisat_usb2_frontend_reset(struct usb_device *udev)
 208 {
 209         usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 210                         SET_FRONT_END_RESET_VENDOR_REQUEST,
 211                         USB_TYPE_VENDOR | USB_DIR_OUT,
 212                         10, 0,
 213                         NULL, 0, 500);
 214 }
 215 #endif
 216
 217 /* LED control */
 218 enum technisat_usb2_led_state {
 219         TECH_LED_OFF,
 220         TECH_LED_BLINK,
 221         TECH_LED_ON,
 222         TECH_LED_UNDEFINED
 223 };
 224
 225 static int technisat_usb2_set_led(struct dvb_usb_device *d, int red,
 226                                   enum technisat_usb2_led_state st)
 227 {
 228         struct technisat_usb2_state *state = d->priv;
 229         u8 *led = state->buf;
 230         int ret;
 231
 232         led[0] = red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST;
 233
 234         if (disable_led_control && st != TECH_LED_OFF)
 235                 return 0;
 236
 237         switch (st) {
 238         case TECH_LED_ON:
 239                 led[1] = 0x82;
 240                 break;
 241         case TECH_LED_BLINK:
 242                 led[1] = 0x82;
 243                 if (red) {
 244                         led[2] = 0x02;
 245                         led[3] = 10;
 246                         led[4] = 10;
 247                 } else {
 248                         led[2] = 0xff;
 249                         led[3] = 50;
 250                         led[4] = 50;
 251                 }
 252                 led[5] = 1;
 253                 break;
 254
 255         default:
 256         case TECH_LED_OFF:
 257                 led[1] = 0x80;
 258                 break;
 259         }
 260
 261         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 262                 return -EAGAIN;
 263
 264         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 265                 red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
 266                 USB_TYPE_VENDOR | USB_DIR_OUT,
 267                 0, 0,
 268                 led, 8, 500);
 269
 270         mutex_unlock(&d->i2c_mutex);
 271         return ret;
 272 }
 273
 274 static int technisat_usb2_set_led_timer(struct dvb_usb_device *d, u8 red, u8 green)
 275 {
 276         struct technisat_usb2_state *state = d->priv;
 277         u8 *b = state->buf;
 278         int ret;
 279
 280         b[0] = 0;
 281
 282         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 283                 return -EAGAIN;
 284
 285         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 286                 SET_LED_TIMER_DIVIDER_VENDOR_REQUEST,
 287                 USB_TYPE_VENDOR | USB_DIR_OUT,
 288                 (red << 8) | green, 0,
 289                 b, 1, 500);
 290
 291         mutex_unlock(&d->i2c_mutex);
 292
 293         return ret;
 294 }
 295
 296 static void technisat_usb2_green_led_control(struct work_struct *work)
 297 {
 298         struct technisat_usb2_state *state =
 299                 container_of(work, struct technisat_usb2_state, green_led_work.work);
 300         struct dvb_frontend *fe = state->dev->adapter[0].fe_adap[0].fe;
 301
 302         if (state->power_state == 0)
 303                 goto schedule;
 304
 305         if (fe != NULL) {
 306                 enum fe_status status;
 307
 308                 if (fe->ops.read_status(fe, &status) != 0)
 309                         goto schedule;
 310
 311                 if (status & FE_HAS_LOCK) {
 312                         u32 ber;
 313
 314                         if (fe->ops.read_ber(fe, &ber) != 0)
 315                                 goto schedule;
 316
 317                         if (ber > 1000)
 318                                 technisat_usb2_set_led(state->dev, 0, TECH_LED_BLINK);
 319                         else
 320                                 technisat_usb2_set_led(state->dev, 0, TECH_LED_ON);
 321                 } else
 322                         technisat_usb2_set_led(state->dev, 0, TECH_LED_OFF);
 323         }
 324
 325 schedule:
 326         schedule_delayed_work(&state->green_led_work,
 327                         msecs_to_jiffies(500));
 328 }
 329
 330 /* method to find out whether the firmware has to be downloaded or not */
 331 static int technisat_usb2_identify_state(struct usb_device *udev,
 332                 struct dvb_usb_device_properties *props,
 333                 struct dvb_usb_device_description **desc, int *cold)
 334 {
 335         int ret;
 336         u8 *version;
 337
 338         version = kmalloc(3, GFP_KERNEL);
 339         if (!version)
 340                 return -ENOMEM;
 341
 342         /* first select the interface */
 343         if (usb_set_interface(udev, 0, 1) != 0)
 344                 err("could not set alternate setting to 0");
 345         else
 346                 info("set alternate setting");
 347
 348         *cold = 0; /* by default do not download a firmware - just in case something is wrong */
 349
 350         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 351                 GET_VERSION_INFO_VENDOR_REQUEST,
 352                 USB_TYPE_VENDOR | USB_DIR_IN,
 353                 0, 0,
 354                 version, 3, 500);
 355
 356         if (ret < 0)
 357                 *cold = 1;
 358         else {
 359                 info("firmware version: %d.%d", version[1], version[2]);
 360                 *cold = 0;
 361         }
 362
 363         kfree(version);
 364
 365         return 0;
 366 }
 367
 368 /* power control */
 369 static int technisat_usb2_power_ctrl(struct dvb_usb_device *d, int level)
 370 {
 371         struct technisat_usb2_state *state = d->priv;
 372
 373         state->power_state = level;
 374
 375         if (disable_led_control)
 376                 return 0;
 377
 378         /* green led is turned off in any case - will be turned on when tuning */
 379         technisat_usb2_set_led(d, 0, TECH_LED_OFF);
 380         /* red led is turned on all the time */
 381         technisat_usb2_set_led(d, 1, TECH_LED_ON);
 382         return 0;
 383 }
 384
 385 /* mac address reading - from the eeprom */
 386 #if 0
 387 static void technisat_usb2_eeprom_dump(struct dvb_usb_device *d)
 388 {
 389         u8 reg;
 390         u8 b[16];
 391         int i, j;
 392
 393         /* full EEPROM dump */
 394         for (j = 0; j < 256 * 4; j += 16) {
 395                 reg = j;
 396                 if (technisat_usb2_i2c_access(d->udev, 0x50 + j / 256, &reg, 1, b, 16) != 0)
 397                         break;
 398
 399                 deb_eeprom("EEPROM: %01x%02x: ", j / 256, reg);
 400                 for (i = 0; i < 16; i++)
 401                         deb_eeprom("%02x ", b[i]);
 402                 deb_eeprom("\n");
 403         }
 404 }
 405 #endif
 406
 407 static u8 technisat_usb2_calc_lrc(const u8 *b, u16 length)
 408 {
 409         u8 lrc = 0;
 410         while (--length)
 411                 lrc ^= *b++;
 412         return lrc;
 413 }
 414
 415 static int technisat_usb2_eeprom_lrc_read(struct dvb_usb_device *d,
 416         u16 offset, u8 *b, u16 length, u8 tries)
 417 {
 418         u8 bo = offset & 0xff;
 419         struct i2c_msg msg[] = {
 420                 {
 421                         .addr = 0x50 | ((offset >> 8) & 0x3),
 422                         .buf = &bo,
 423                         .len = 1
 424                 }, {
 425                         .addr = 0x50 | ((offset >> 8) & 0x3),
 426                         .flags  = I2C_M_RD,
 427                         .buf = b,
 428                         .len = length
 429                 }
 430         };
 431
 432         while (tries--) {
 433                 int status;
 434
 435                 if (i2c_transfer(&d->i2c_adap, msg, 2) != 2)
 436                         break;
 437
 438                 status =
 439                         technisat_usb2_calc_lrc(b, length - 1) == b[length - 1];
 440
 441                 if (status)
 442                         return 0;
 443         }
 444
 445         return -EREMOTEIO;
 446 }
 447
 448 #define EEPROM_MAC_START 0x3f8
 449 #define EEPROM_MAC_TOTAL 8
 450 static int technisat_usb2_read_mac_address(struct dvb_usb_device *d,
 451                 u8 mac[])
 452 {
 453         u8 buf[EEPROM_MAC_TOTAL];
 454
 455         if (technisat_usb2_eeprom_lrc_read(d, EEPROM_MAC_START,
 456                                 buf, EEPROM_MAC_TOTAL, 4) != 0)
 457                 return -ENODEV;
 458
 459         memcpy(mac, buf, 6);
 460         return 0;
 461 }
 462
 463 static struct stv090x_config technisat_usb2_stv090x_config;
 464
 465 /* frontend attach */
 466 static int technisat_usb2_set_voltage(struct dvb_frontend *fe,
 467                                       enum fe_sec_voltage voltage)
 468 {
 469         int i;
 470         u8 gpio[3] = { 0 }; /* 0 = 2, 1 = 3, 2 = 4 */
 471
 472         gpio[2] = 1; /* high - voltage ? */
 473
 474         switch (voltage) {
 475         case SEC_VOLTAGE_13:
 476                 gpio[0] = 1;
 477                 break;
 478         case SEC_VOLTAGE_18:
 479                 gpio[0] = 1;
 480                 gpio[1] = 1;
 481                 break;
 482         default:
 483         case SEC_VOLTAGE_OFF:
 484                 break;
 485         }
 486
 487         for (i = 0; i < 3; i++)
 488                 if (technisat_usb2_stv090x_config.set_gpio(fe, i+2, 0,
 489                                                            gpio[i], 0) != 0)
 490                         return -EREMOTEIO;
 491         return 0;
 492 }
 493
 494 static struct stv090x_config technisat_usb2_stv090x_config = {
 495         .device         = STV0903,
 496         .demod_mode     = STV090x_SINGLE,
 497         .clk_mode       = STV090x_CLK_EXT,
 498
 499         .xtal           = 8000000,
 500         .address        = 0x68,
 501
 502         .ts1_mode       = STV090x_TSMODE_DVBCI,
 503         .ts1_clk        = 13400000,
 504         .ts1_tei        = 1,
 505
 506         .repeater_level = STV090x_RPTLEVEL_64,
 507
 508         .tuner_bbgain   = 6,
 509 };
 510
 511 static struct stv6110x_config technisat_usb2_stv6110x_config = {
 512         .addr           = 0x60,
 513         .refclk         = 16000000,
 514         .clk_div        = 2,
 515 };
 516
 517 static int technisat_usb2_frontend_attach(struct dvb_usb_adapter *a)
 518 {
 519         struct usb_device *udev = a->dev->udev;
 520         int ret;
 521
 522         a->fe_adap[0].fe = dvb_attach(stv090x_attach, &technisat_usb2_stv090x_config,
 523                         &a->dev->i2c_adap, STV090x_DEMODULATOR_0);
 524
 525         if (a->fe_adap[0].fe) {
 526                 const struct stv6110x_devctl *ctl;
 527
 528                 ctl = dvb_attach(stv6110x_attach,
 529                                 a->fe_adap[0].fe,
 530                                 &technisat_usb2_stv6110x_config,
 531                                 &a->dev->i2c_adap);
 532
 533                 if (ctl) {
 534                         technisat_usb2_stv090x_config.tuner_init          = ctl->tuner_init;
 535                         technisat_usb2_stv090x_config.tuner_sleep         = ctl->tuner_sleep;
 536                         technisat_usb2_stv090x_config.tuner_set_mode      = ctl->tuner_set_mode;
 537                         technisat_usb2_stv090x_config.tuner_set_frequency = ctl->tuner_set_frequency;
 538                         technisat_usb2_stv090x_config.tuner_get_frequency = ctl->tuner_get_frequency;
 539                         technisat_usb2_stv090x_config.tuner_set_bandwidth = ctl->tuner_set_bandwidth;
 540                         technisat_usb2_stv090x_config.tuner_get_bandwidth = ctl->tuner_get_bandwidth;
 541                         technisat_usb2_stv090x_config.tuner_set_bbgain    = ctl->tuner_set_bbgain;
 542                         technisat_usb2_stv090x_config.tuner_get_bbgain    = ctl->tuner_get_bbgain;
 543                         technisat_usb2_stv090x_config.tuner_set_refclk    = ctl->tuner_set_refclk;
 544                         technisat_usb2_stv090x_config.tuner_get_status    = ctl->tuner_get_status;
 545
 546                         /* call the init function once to initialize
 547                            tuner's clock output divider and demod's
 548                            master clock */
 549                         if (a->fe_adap[0].fe->ops.init)
 550                                 a->fe_adap[0].fe->ops.init(a->fe_adap[0].fe);
 551
 552                         if (mutex_lock_interruptible(&a->dev->i2c_mutex) < 0)
 553                                 return -EAGAIN;
 554
 555                         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 556                                         SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST,
 557                                         USB_TYPE_VENDOR | USB_DIR_OUT,
 558                                         0, 0,
 559                                         NULL, 0, 500);
 560                         mutex_unlock(&a->dev->i2c_mutex);
 561
 562                         if (ret != 0)
 563                                 err("could not set IF_CLK to external");
 564
 565                         a->fe_adap[0].fe->ops.set_voltage = technisat_usb2_set_voltage;
 566
 567                         /* if everything was successful assign a nice name to the frontend */
 568                         strlcpy(a->fe_adap[0].fe->ops.info.name, a->dev->desc->name,
 569                                         sizeof(a->fe_adap[0].fe->ops.info.name));
 570                 } else {
 571                         dvb_frontend_detach(a->fe_adap[0].fe);
 572                         a->fe_adap[0].fe = NULL;
 573                 }
 574         }
 575
 576         technisat_usb2_set_led_timer(a->dev, 1, 1);
 577
 578         return a->fe_adap[0].fe == NULL ? -ENODEV : 0;
 579 }
 580
 581 /* Remote control */
 582
 583 /* the device is giving providing raw IR-signals to the host mapping
 584  * it only to one remote control is just the default implementation
 585  */
 586 #define NOMINAL_IR_BIT_TRANSITION_TIME_US 889
 587 #define NOMINAL_IR_BIT_TIME_US (2 * NOMINAL_IR_BIT_TRANSITION_TIME_US)
 588
 589 #define FIRMWARE_CLOCK_TICK 83333
 590 #define FIRMWARE_CLOCK_DIVISOR 256
 591
 592 #define IR_PERCENT_TOLERANCE 15
 593
 594 #define NOMINAL_IR_BIT_TRANSITION_TICKS ((NOMINAL_IR_BIT_TRANSITION_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
 595 #define NOMINAL_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICKS / FIRMWARE_CLOCK_DIVISOR)
 596
 597 #define NOMINAL_IR_BIT_TIME_TICKS ((NOMINAL_IR_BIT_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
 598 #define NOMINAL_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICKS / FIRMWARE_CLOCK_DIVISOR)
 599
 600 #define MINIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT - ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 601 #define MAXIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT + ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 602
 603 #define MINIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT - ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 604 #define MAXIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT + ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 605
 606 static int technisat_usb2_get_ir(struct dvb_usb_device *d)
 607 {
 608         struct technisat_usb2_state *state = d->priv;
 609         u8 *buf = state->buf;
 610         u8 *b;
 611         int ret;
 612         struct ir_raw_event ev;
 613
 614         buf[0] = GET_IR_DATA_VENDOR_REQUEST;
 615         buf[1] = 0x08;
 616         buf[2] = 0x8f;
 617         buf[3] = MINIMUM_IR_BIT_TRANSITION_TICK_COUNT;
 618         buf[4] = MAXIMUM_IR_BIT_TIME_TICK_COUNT;
 619
 620         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 621                 return -EAGAIN;
 622         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 623                         GET_IR_DATA_VENDOR_REQUEST,
 624                         USB_TYPE_VENDOR | USB_DIR_OUT,
 625                         0, 0,
 626                         buf, 5, 500);
 627         if (ret < 0)
 628                 goto unlock;
 629
 630         buf[1] = 0;
 631         buf[2] = 0;
 632         ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
 633                         GET_IR_DATA_VENDOR_REQUEST,
 634                         USB_TYPE_VENDOR | USB_DIR_IN,
 635                         0x8080, 0,
 636                         buf, 62, 500);
 637
 638 unlock:
 639         mutex_unlock(&d->i2c_mutex);
 640
 641         if (ret < 0)
 642                 return ret;
 643
 644         if (ret == 1)
 645                 return 0; /* no key pressed */
 646
 647         /* decoding */
 648         b = buf+1;
 649
 650 #if 0
 651         deb_rc("RC: %d ", ret);
 652         debug_dump(b, ret, deb_rc);
 653 #endif
 654
 655         ev.pulse = 0;
 656         while (1) {
 657                 ev.pulse = !ev.pulse;
 658                 ev.duration = (*b * FIRMWARE_CLOCK_DIVISOR * FIRMWARE_CLOCK_TICK) / 1000;
 659                 ir_raw_event_store(d->rc_dev, &ev);
 660
 661                 b++;
 662                 if (*b == 0xff) {
 663                         ev.pulse = 0;
 664                         ev.duration = 888888*2;
 665                         ir_raw_event_store(d->rc_dev, &ev);
 666                         break;
 667                 }
 668         }
 669
 670         ir_raw_event_handle(d->rc_dev);
 671
 672         return 1;
 673 }
 674
 675 static int technisat_usb2_rc_query(struct dvb_usb_device *d)
 676 {
 677         int ret = technisat_usb2_get_ir(d);
 678
 679         if (ret < 0)
 680                 return ret;
 681
 682         if (ret == 0)
 683                 return 0;
 684
 685         if (!disable_led_control)
 686                 technisat_usb2_set_led(d, 1, TECH_LED_BLINK);
 687
 688         return 0;
 689 }
 690
 691 /* DVB-USB and USB stuff follows */
 692 static struct usb_device_id technisat_usb2_id_table[] = {
 693         { USB_DEVICE(USB_VID_TECHNISAT, USB_PID_TECHNISAT_USB2_DVB_S2) },
 694         { 0 }           /* Terminating entry */
 695 };
 696 MODULE_DEVICE_TABLE(usb, technisat_usb2_id_table);
 697
 698 /* device description */
 699 static struct dvb_usb_device_properties technisat_usb2_devices = {
 700         .caps              = DVB_USB_IS_AN_I2C_ADAPTER,
 701
 702         .usb_ctrl          = CYPRESS_FX2,
 703
 704         .identify_state    = technisat_usb2_identify_state,
 705         .firmware          = "dvb-usb-SkyStar_USB_HD_FW_v17_63.HEX.fw",
 706
 707         .size_of_priv      = sizeof(struct technisat_usb2_state),
 708
 709         .i2c_algo          = &technisat_usb2_i2c_algo,
 710
 711         .power_ctrl        = technisat_usb2_power_ctrl,
 712         .read_mac_address  = technisat_usb2_read_mac_address,
 713
 714         .num_adapters = 1,
 715         .adapter = {
 716                 {
 717                 .num_frontends = 1,
 718                 .fe = {{
 719                         .frontend_attach  = technisat_usb2_frontend_attach,
 720
 721                         .stream = {
 722                                 .type = USB_ISOC,
 723                                 .count = 4,
 724                                 .endpoint = 0x2,
 725                                 .u = {
 726                                         .isoc = {
 727                                                 .framesperurb = 32,
 728                                                 .framesize = 2048,
 729                                                 .interval = 1,
 730                                         }
 731                                 }
 732                         },
 733                 }},
 734                         .size_of_priv = 0,
 735                 },
 736         },
 737
 738         .num_device_descs = 1,
 739         .devices = {
 740                 {   "Technisat SkyStar USB HD (DVB-S/S2)",
 741                         { &technisat_usb2_id_table[0], NULL },
 742                         { NULL },
 743                 },
 744         },
 745
 746         .rc.core = {
 747                 .rc_interval = 100,
 748                 .rc_codes    = RC_MAP_TECHNISAT_USB2,
 749                 .module_name = "technisat-usb2",
 750                 .rc_query    = technisat_usb2_rc_query,
 751                 .allowed_protos = RC_BIT_ALL,
 752                 .driver_type    = RC_DRIVER_IR_RAW,
 753         }
 754 };
 755
 756 static int technisat_usb2_probe(struct usb_interface *intf,
 757                 const struct usb_device_id *id)
 758 {
 759         struct dvb_usb_device *dev;
 760
 761         if (dvb_usb_device_init(intf, &technisat_usb2_devices, THIS_MODULE,
 762                                 &dev, adapter_nr) != 0)
 763                 return -ENODEV;
 764
 765         if (dev) {
 766                 struct technisat_usb2_state *state = dev->priv;
 767                 state->dev = dev;
 768
 769                 if (!disable_led_control) {
 770                         INIT_DELAYED_WORK(&state->green_led_work,
 771                                         technisat_usb2_green_led_control);
 772                         schedule_delayed_work(&state->green_led_work,
 773                                         msecs_to_jiffies(500));
 774                 }
 775         }
 776
 777         return 0;
 778 }
 779
 780 static void technisat_usb2_disconnect(struct usb_interface *intf)
 781 {
 782         struct dvb_usb_device *dev = usb_get_intfdata(intf);
 783
 784         /* work and stuff was only created when the device is is hot-state */
 785         if (dev != NULL) {
 786                 struct technisat_usb2_state *state = dev->priv;
 787                 if (state != NULL)
 788                         cancel_delayed_work_sync(&state->green_led_work);
 789         }
 790
 791         dvb_usb_device_exit(intf);
 792 }
 793
 794 static struct usb_driver technisat_usb2_driver = {
 795         .name       = "dvb_usb_technisat_usb2",
 796         .probe      = technisat_usb2_probe,
 797         .disconnect = technisat_usb2_disconnect,
 798         .id_table   = technisat_usb2_id_table,
 799 };
 800
 801 module_usb_driver(technisat_usb2_driver);
 802
 803 MODULE_AUTHOR("Patrick Boettcher <pboettcher@kernellabs.com>");
 804 MODULE_DESCRIPTION("Driver for Technisat DVB-S/S2 USB 2.0 device");
 805 MODULE_VERSION("1.0");
 806 MODULE_LICENSE("GPL");