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