drivers/media/dvb/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
  65 /* debug print helpers */
  66 #define deb_info(args...)    dprintk(debug, 0x01, args)
  67 #define deb_eeprom(args...)  dprintk(debug, 0x02, args)
  68 #define deb_i2c(args...)     dprintk(debug, 0x04, args)
  69 #define deb_rc(args...)      dprintk(debug, 0x08, args)
  70
  71 /* vendor requests */
  72 #define SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST 0xB3
  73 #define SET_FRONT_END_RESET_VENDOR_REQUEST         0xB4
  74 #define GET_VERSION_INFO_VENDOR_REQUEST            0xB5
  75 #define SET_GREEN_LED_VENDOR_REQUEST               0xB6
  76 #define SET_RED_LED_VENDOR_REQUEST                 0xB7
  77 #define GET_IR_DATA_VENDOR_REQUEST                 0xB8
  78 #define SET_LED_TIMER_DIVIDER_VENDOR_REQUEST       0xB9
  79 #define SET_USB_REENUMERATION                      0xBA
  80
  81 /* i2c-access methods */
  82 #define I2C_SPEED_100KHZ_BIT 0x40
  83
  84 #define I2C_STATUS_NAK 7
  85 #define I2C_STATUS_OK 8
  86
  87 static int technisat_usb2_i2c_access(struct usb_device *udev,
  88                 u8 device_addr, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
  89 {
  90         u8 b[64];
  91         int ret, actual_length;
  92
  93         deb_i2c("i2c-access: %02x, tx: ", device_addr);
  94         debug_dump(tx, txlen, deb_i2c);
  95         deb_i2c(" ");
  96
  97         if (txlen > 62) {
  98                 err("i2c TX buffer can't exceed 62 bytes (dev 0x%02x)",
  99                                 device_addr);
 100                 txlen = 62;
 101         }
 102         if (rxlen > 62) {
 103                 err("i2c RX buffer can't exceed 62 bytes (dev 0x%02x)",
 104                                 device_addr);
 105                 txlen = 62;
 106         }
 107
 108         b[0] = I2C_SPEED_100KHZ_BIT;
 109         b[1] = device_addr << 1;
 110
 111         if (rx != NULL) {
 112                 b[0] |= rxlen;
 113                 b[1] |= 1;
 114         }
 115
 116         memcpy(&b[2], tx, txlen);
 117         ret = usb_bulk_msg(udev,
 118                         usb_sndbulkpipe(udev, 0x01),
 119                         b, 2 + txlen,
 120                         NULL, 1000);
 121
 122         if (ret < 0) {
 123                 err("i2c-error: out failed %02x = %d", device_addr, ret);
 124                 return -ENODEV;
 125         }
 126
 127         ret = usb_bulk_msg(udev,
 128                         usb_rcvbulkpipe(udev, 0x01),
 129                         b, 64, &actual_length, 1000);
 130         if (ret < 0) {
 131                 err("i2c-error: in failed %02x = %d", device_addr, ret);
 132                 return -ENODEV;
 133         }
 134
 135         if (b[0] != I2C_STATUS_OK) {
 136                 err("i2c-error: %02x = %d", device_addr, b[0]);
 137                 /* handle tuner-i2c-nak */
 138                 if (!(b[0] == I2C_STATUS_NAK &&
 139                                 device_addr == 0x60
 140                                 /* && device_is_technisat_usb2 */))
 141                         return -ENODEV;
 142         }
 143
 144         deb_i2c("status: %d, ", b[0]);
 145
 146         if (rx != NULL) {
 147                 memcpy(rx, &b[2], rxlen);
 148
 149                 deb_i2c("rx (%d): ", rxlen);
 150                 debug_dump(rx, rxlen, deb_i2c);
 151         }
 152
 153         deb_i2c("\n");
 154
 155         return 0;
 156 }
 157
 158 static int technisat_usb2_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
 159                                 int num)
 160 {
 161         int ret = 0, i;
 162         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 163
 164         /* Ensure nobody else hits the i2c bus while we're sending our
 165            sequence of messages, (such as the remote control thread) */
 166         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 167                 return -EAGAIN;
 168
 169         for (i = 0; i < num; i++) {
 170                 if (i+1 < num && msg[i+1].flags & I2C_M_RD) {
 171                         ret = technisat_usb2_i2c_access(d->udev, msg[i+1].addr,
 172                                                 msg[i].buf, msg[i].len,
 173                                                 msg[i+1].buf, msg[i+1].len);
 174                         if (ret != 0)
 175                                 break;
 176                         i++;
 177                 } else {
 178                         ret = technisat_usb2_i2c_access(d->udev, msg[i].addr,
 179                                                 msg[i].buf, msg[i].len,
 180                                                 NULL, 0);
 181                         if (ret != 0)
 182                                 break;
 183                 }
 184         }
 185
 186         if (ret == 0)
 187                 ret = i;
 188
 189         mutex_unlock(&d->i2c_mutex);
 190
 191         return ret;
 192 }
 193
 194 static u32 technisat_usb2_i2c_func(struct i2c_adapter *adapter)
 195 {
 196         return I2C_FUNC_I2C;
 197 }
 198
 199 static struct i2c_algorithm technisat_usb2_i2c_algo = {
 200         .master_xfer   = technisat_usb2_i2c_xfer,
 201         .functionality = technisat_usb2_i2c_func,
 202 };
 203
 204 #if 0
 205 static void technisat_usb2_frontend_reset(struct usb_device *udev)
 206 {
 207         usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 208                         SET_FRONT_END_RESET_VENDOR_REQUEST,
 209                         USB_TYPE_VENDOR | USB_DIR_OUT,
 210                         10, 0,
 211                         NULL, 0, 500);
 212 }
 213 #endif
 214
 215 /* LED control */
 216 enum technisat_usb2_led_state {
 217         LED_OFF,
 218         LED_BLINK,
 219         LED_ON,
 220         LED_UNDEFINED
 221 };
 222
 223 static int technisat_usb2_set_led(struct dvb_usb_device *d, int red, enum technisat_usb2_led_state state)
 224 {
 225         int ret;
 226
 227         u8 led[8] = {
 228                 red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
 229                 0
 230         };
 231
 232         if (disable_led_control && state != LED_OFF)
 233                 return 0;
 234
 235         switch (state) {
 236         case LED_ON:
 237                 led[1] = 0x82;
 238                 break;
 239         case LED_BLINK:
 240                 led[1] = 0x82;
 241                 if (red) {
 242                         led[2] = 0x02;
 243                         led[3] = 10;
 244                         led[4] = 10;
 245                 } else {
 246                         led[2] = 0xff;
 247                         led[3] = 50;
 248                         led[4] = 50;
 249                 }
 250                 led[5] = 1;
 251                 break;
 252
 253         default:
 254         case LED_OFF:
 255                 led[1] = 0x80;
 256                 break;
 257         }
 258
 259         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 260                 return -EAGAIN;
 261
 262         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 263                 red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
 264                 USB_TYPE_VENDOR | USB_DIR_OUT,
 265                 0, 0,
 266                 led, sizeof(led), 500);
 267
 268         mutex_unlock(&d->i2c_mutex);
 269         return ret;
 270 }
 271
 272 static int technisat_usb2_set_led_timer(struct dvb_usb_device *d, u8 red, u8 green)
 273 {
 274         int ret;
 275         u8 b = 0;
 276
 277         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 278                 return -EAGAIN;
 279
 280         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 281                 SET_LED_TIMER_DIVIDER_VENDOR_REQUEST,
 282                 USB_TYPE_VENDOR | USB_DIR_OUT,
 283                 (red << 8) | green, 0,
 284                 &b, 1, 500);
 285
 286         mutex_unlock(&d->i2c_mutex);
 287
 288         return ret;
 289 }
 290
 291 static void technisat_usb2_green_led_control(struct work_struct *work)
 292 {
 293         struct technisat_usb2_state *state =
 294                 container_of(work, struct technisat_usb2_state, green_led_work.work);
 295         struct dvb_frontend *fe = state->dev->adapter[0].fe_adap[0].fe;
 296
 297         if (state->power_state == 0)
 298                 goto schedule;
 299
 300         if (fe != NULL) {
 301                 enum fe_status status;
 302
 303                 if (fe->ops.read_status(fe, &status) != 0)
 304                         goto schedule;
 305
 306                 if (status & FE_HAS_LOCK) {
 307                         u32 ber;
 308
 309                         if (fe->ops.read_ber(fe, &ber) != 0)
 310                                 goto schedule;
 311
 312                         if (ber > 1000)
 313                                 technisat_usb2_set_led(state->dev, 0, LED_BLINK);
 314                         else
 315                                 technisat_usb2_set_led(state->dev, 0, LED_ON);
 316                 } else
 317                         technisat_usb2_set_led(state->dev, 0, LED_OFF);
 318         }
 319
 320 schedule:
 321         schedule_delayed_work(&state->green_led_work,
 322                         msecs_to_jiffies(500));
 323 }
 324
 325 /* method to find out whether the firmware has to be downloaded or not */
 326 static int technisat_usb2_identify_state(struct usb_device *udev,
 327                 struct dvb_usb_device_properties *props,
 328                 struct dvb_usb_device_description **desc, int *cold)
 329 {
 330         int ret;
 331         u8 version[3];
 332
 333         /* first select the interface */
 334         if (usb_set_interface(udev, 0, 1) != 0)
 335                 err("could not set alternate setting to 0");
 336         else
 337                 info("set alternate setting");
 338
 339         *cold = 0; /* by default do not download a firmware - just in case something is wrong */
 340
 341         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 342                 GET_VERSION_INFO_VENDOR_REQUEST,
 343                 USB_TYPE_VENDOR | USB_DIR_IN,
 344                 0, 0,
 345                 version, sizeof(version), 500);
 346
 347         if (ret < 0)
 348                 *cold = 1;
 349         else {
 350                 info("firmware version: %d.%d", version[1], version[2]);
 351                 *cold = 0;
 352         }
 353
 354         return 0;
 355 }
 356
 357 /* power control */
 358 static int technisat_usb2_power_ctrl(struct dvb_usb_device *d, int level)
 359 {
 360         struct technisat_usb2_state *state = d->priv;
 361
 362         state->power_state = level;
 363
 364         if (disable_led_control)
 365                 return 0;
 366
 367         /* green led is turned off in any case - will be turned on when tuning */
 368         technisat_usb2_set_led(d, 0, LED_OFF);
 369         /* red led is turned on all the time */
 370         technisat_usb2_set_led(d, 1, LED_ON);
 371         return 0;
 372 }
 373
 374 /* mac address reading - from the eeprom */
 375 #if 0
 376 static void technisat_usb2_eeprom_dump(struct dvb_usb_device *d)
 377 {
 378         u8 reg;
 379         u8 b[16];
 380         int i, j;
 381
 382         /* full EEPROM dump */
 383         for (j = 0; j < 256 * 4; j += 16) {
 384                 reg = j;
 385                 if (technisat_usb2_i2c_access(d->udev, 0x50 + j / 256, &reg, 1, b, 16) != 0)
 386                         break;
 387
 388                 deb_eeprom("EEPROM: %01x%02x: ", j / 256, reg);
 389                 for (i = 0; i < 16; i++)
 390                         deb_eeprom("%02x ", b[i]);
 391                 deb_eeprom("\n");
 392         }
 393 }
 394 #endif
 395
 396 static u8 technisat_usb2_calc_lrc(const u8 *b, u16 length)
 397 {
 398         u8 lrc = 0;
 399         while (--length)
 400                 lrc ^= *b++;
 401         return lrc;
 402 }
 403
 404 static int technisat_usb2_eeprom_lrc_read(struct dvb_usb_device *d,
 405         u16 offset, u8 *b, u16 length, u8 tries)
 406 {
 407         u8 bo = offset & 0xff;
 408         struct i2c_msg msg[] = {
 409                 {
 410                         .addr = 0x50 | ((offset >> 8) & 0x3),
 411                         .buf = &bo,
 412                         .len = 1
 413                 }, {
 414                         .addr = 0x50 | ((offset >> 8) & 0x3),
 415                         .flags  = I2C_M_RD,
 416                         .buf = b,
 417                         .len = length
 418                 }
 419         };
 420
 421         while (tries--) {
 422                 int status;
 423
 424                 if (i2c_transfer(&d->i2c_adap, msg, 2) != 2)
 425                         break;
 426
 427                 status =
 428                         technisat_usb2_calc_lrc(b, length - 1) == b[length - 1];
 429
 430                 if (status)
 431                         return 0;
 432         }
 433
 434         return -EREMOTEIO;
 435 }
 436
 437 #define EEPROM_MAC_START 0x3f8
 438 #define EEPROM_MAC_TOTAL 8
 439 static int technisat_usb2_read_mac_address(struct dvb_usb_device *d,
 440                 u8 mac[])
 441 {
 442         u8 buf[EEPROM_MAC_TOTAL];
 443
 444         if (technisat_usb2_eeprom_lrc_read(d, EEPROM_MAC_START,
 445                                 buf, EEPROM_MAC_TOTAL, 4) != 0)
 446                 return -ENODEV;
 447
 448         memcpy(mac, buf, 6);
 449         return 0;
 450 }
 451
 452 /* frontend attach */
 453 static int technisat_usb2_set_voltage(struct dvb_frontend *fe,
 454                 fe_sec_voltage_t voltage)
 455 {
 456         int i;
 457         u8 gpio[3] = { 0 }; /* 0 = 2, 1 = 3, 2 = 4 */
 458
 459         gpio[2] = 1; /* high - voltage ? */
 460
 461         switch (voltage) {
 462         case SEC_VOLTAGE_13:
 463                 gpio[0] = 1;
 464                 break;
 465         case SEC_VOLTAGE_18:
 466                 gpio[0] = 1;
 467                 gpio[1] = 1;
 468                 break;
 469         default:
 470         case SEC_VOLTAGE_OFF:
 471                 break;
 472         }
 473
 474         for (i = 0; i < 3; i++)
 475                 if (stv090x_set_gpio(fe, i+2, 0, gpio[i], 0) != 0)
 476                         return -EREMOTEIO;
 477         return 0;
 478 }
 479
 480 static struct stv090x_config technisat_usb2_stv090x_config = {
 481         .device         = STV0903,
 482         .demod_mode     = STV090x_SINGLE,
 483         .clk_mode       = STV090x_CLK_EXT,
 484
 485         .xtal           = 8000000,
 486         .address        = 0x68,
 487
 488         .ts1_mode       = STV090x_TSMODE_DVBCI,
 489         .ts1_clk        = 13400000,
 490         .ts1_tei        = 1,
 491
 492         .repeater_level = STV090x_RPTLEVEL_64,
 493
 494         .tuner_bbgain   = 6,
 495 };
 496
 497 static struct stv6110x_config technisat_usb2_stv6110x_config = {
 498         .addr           = 0x60,
 499         .refclk         = 16000000,
 500         .clk_div        = 2,
 501 };
 502
 503 static int technisat_usb2_frontend_attach(struct dvb_usb_adapter *a)
 504 {
 505         struct usb_device *udev = a->dev->udev;
 506         int ret;
 507
 508         a->fe_adap[0].fe = dvb_attach(stv090x_attach, &technisat_usb2_stv090x_config,
 509                         &a->dev->i2c_adap, STV090x_DEMODULATOR_0);
 510
 511         if (a->fe_adap[0].fe) {
 512                 struct stv6110x_devctl *ctl;
 513
 514                 ctl = dvb_attach(stv6110x_attach,
 515                                 a->fe_adap[0].fe,
 516                                 &technisat_usb2_stv6110x_config,
 517                                 &a->dev->i2c_adap);
 518
 519                 if (ctl) {
 520                         technisat_usb2_stv090x_config.tuner_init          = ctl->tuner_init;
 521                         technisat_usb2_stv090x_config.tuner_sleep         = ctl->tuner_sleep;
 522                         technisat_usb2_stv090x_config.tuner_set_mode      = ctl->tuner_set_mode;
 523                         technisat_usb2_stv090x_config.tuner_set_frequency = ctl->tuner_set_frequency;
 524                         technisat_usb2_stv090x_config.tuner_get_frequency = ctl->tuner_get_frequency;
 525                         technisat_usb2_stv090x_config.tuner_set_bandwidth = ctl->tuner_set_bandwidth;
 526                         technisat_usb2_stv090x_config.tuner_get_bandwidth = ctl->tuner_get_bandwidth;
 527                         technisat_usb2_stv090x_config.tuner_set_bbgain    = ctl->tuner_set_bbgain;
 528                         technisat_usb2_stv090x_config.tuner_get_bbgain    = ctl->tuner_get_bbgain;
 529                         technisat_usb2_stv090x_config.tuner_set_refclk    = ctl->tuner_set_refclk;
 530                         technisat_usb2_stv090x_config.tuner_get_status    = ctl->tuner_get_status;
 531
 532                         /* call the init function once to initialize
 533                            tuner's clock output divider and demod's
 534                            master clock */
 535                         if (a->fe_adap[0].fe->ops.init)
 536                                 a->fe_adap[0].fe->ops.init(a->fe_adap[0].fe);
 537
 538                         if (mutex_lock_interruptible(&a->dev->i2c_mutex) < 0)
 539                                 return -EAGAIN;
 540
 541                         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 542                                         SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST,
 543                                         USB_TYPE_VENDOR | USB_DIR_OUT,
 544                                         0, 0,
 545                                         NULL, 0, 500);
 546                         mutex_unlock(&a->dev->i2c_mutex);
 547
 548                         if (ret != 0)
 549                                 err("could not set IF_CLK to external");
 550
 551                         a->fe_adap[0].fe->ops.set_voltage = technisat_usb2_set_voltage;
 552
 553                         /* if everything was successful assign a nice name to the frontend */
 554                         strlcpy(a->fe_adap[0].fe->ops.info.name, a->dev->desc->name,
 555                                         sizeof(a->fe_adap[0].fe->ops.info.name));
 556                 } else {
 557                         dvb_frontend_detach(a->fe_adap[0].fe);
 558                         a->fe_adap[0].fe = NULL;
 559                 }
 560         }
 561
 562         technisat_usb2_set_led_timer(a->dev, 1, 1);
 563
 564         return a->fe_adap[0].fe == NULL ? -ENODEV : 0;
 565 }
 566
 567 /* Remote control */
 568
 569 /* the device is giving providing raw IR-signals to the host mapping
 570  * it only to one remote control is just the default implementation
 571  */
 572 #define NOMINAL_IR_BIT_TRANSITION_TIME_US 889
 573 #define NOMINAL_IR_BIT_TIME_US (2 * NOMINAL_IR_BIT_TRANSITION_TIME_US)
 574
 575 #define FIRMWARE_CLOCK_TICK 83333
 576 #define FIRMWARE_CLOCK_DIVISOR 256
 577
 578 #define IR_PERCENT_TOLERANCE 15
 579
 580 #define NOMINAL_IR_BIT_TRANSITION_TICKS ((NOMINAL_IR_BIT_TRANSITION_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
 581 #define NOMINAL_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICKS / FIRMWARE_CLOCK_DIVISOR)
 582
 583 #define NOMINAL_IR_BIT_TIME_TICKS ((NOMINAL_IR_BIT_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
 584 #define NOMINAL_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICKS / FIRMWARE_CLOCK_DIVISOR)
 585
 586 #define MINIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT - ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 587 #define MAXIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT + ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 588
 589 #define MINIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT - ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 590 #define MAXIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT + ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
 591
 592 static int technisat_usb2_get_ir(struct dvb_usb_device *d)
 593 {
 594         u8 buf[62], *b;
 595         int ret;
 596         struct ir_raw_event ev;
 597
 598         buf[0] = GET_IR_DATA_VENDOR_REQUEST;
 599         buf[1] = 0x08;
 600         buf[2] = 0x8f;
 601         buf[3] = MINIMUM_IR_BIT_TRANSITION_TICK_COUNT;
 602         buf[4] = MAXIMUM_IR_BIT_TIME_TICK_COUNT;
 603
 604         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 605                 return -EAGAIN;
 606         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 607                         GET_IR_DATA_VENDOR_REQUEST,
 608                         USB_TYPE_VENDOR | USB_DIR_OUT,
 609                         0, 0,
 610                         buf, 5, 500);
 611         if (ret < 0)
 612                 goto unlock;
 613
 614         buf[1] = 0;
 615         buf[2] = 0;
 616         ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
 617                         GET_IR_DATA_VENDOR_REQUEST,
 618                         USB_TYPE_VENDOR | USB_DIR_IN,
 619                         0x8080, 0,
 620                         buf, sizeof(buf), 500);
 621
 622 unlock:
 623         mutex_unlock(&d->i2c_mutex);
 624
 625         if (ret < 0)
 626                 return ret;
 627
 628         if (ret == 1)
 629                 return 0; /* no key pressed */
 630
 631         /* decoding */
 632         b = buf+1;
 633
 634 #if 0
 635         deb_rc("RC: %d ", ret);
 636         debug_dump(b, ret, deb_rc);
 637 #endif
 638
 639         ev.pulse = 0;
 640         while (1) {
 641                 ev.pulse = !ev.pulse;
 642                 ev.duration = (*b * FIRMWARE_CLOCK_DIVISOR * FIRMWARE_CLOCK_TICK) / 1000;
 643                 ir_raw_event_store(d->rc_dev, &ev);
 644
 645                 b++;
 646                 if (*b == 0xff) {
 647                         ev.pulse = 0;
 648                         ev.duration = 888888*2;
 649                         ir_raw_event_store(d->rc_dev, &ev);
 650                         break;
 651                 }
 652         }
 653
 654         ir_raw_event_handle(d->rc_dev);
 655
 656         return 1;
 657 }
 658
 659 static int technisat_usb2_rc_query(struct dvb_usb_device *d)
 660 {
 661         int ret = technisat_usb2_get_ir(d);
 662
 663         if (ret < 0)
 664                 return ret;
 665
 666         if (ret == 0)
 667                 return 0;
 668
 669         if (!disable_led_control)
 670                 technisat_usb2_set_led(d, 1, LED_BLINK);
 671
 672         return 0;
 673 }
 674
 675 /* DVB-USB and USB stuff follows */
 676 static struct usb_device_id technisat_usb2_id_table[] = {
 677         { USB_DEVICE(USB_VID_TECHNISAT, USB_PID_TECHNISAT_USB2_DVB_S2) },
 678         { 0 }           /* Terminating entry */
 679 };
 680
 681 /* device description */
 682 static struct dvb_usb_device_properties technisat_usb2_devices = {
 683         .caps              = DVB_USB_IS_AN_I2C_ADAPTER,
 684
 685         .usb_ctrl          = CYPRESS_FX2,
 686
 687         .identify_state    = technisat_usb2_identify_state,
 688         .firmware          = "dvb-usb-SkyStar_USB_HD_FW_v17_63.HEX.fw",
 689
 690         .size_of_priv      = sizeof(struct technisat_usb2_state),
 691
 692         .i2c_algo          = &technisat_usb2_i2c_algo,
 693
 694         .power_ctrl        = technisat_usb2_power_ctrl,
 695         .read_mac_address  = technisat_usb2_read_mac_address,
 696
 697         .num_adapters = 1,
 698         .adapter = {
 699                 {
 700                 .num_frontends = 1,
 701                 .fe = {{
 702                         .frontend_attach  = technisat_usb2_frontend_attach,
 703
 704                         .stream = {
 705                                 .type = USB_ISOC,
 706                                 .count = 8,
 707                                 .endpoint = 0x2,
 708                                 .u = {
 709                                         .isoc = {
 710                                                 .framesperurb = 32,
 711                                                 .framesize = 2048,
 712                                                 .interval = 3,
 713                                         }
 714                                 }
 715                         },
 716                 }},
 717                         .size_of_priv = 0,
 718                 },
 719         },
 720
 721         .num_device_descs = 1,
 722         .devices = {
 723                 {   "Technisat SkyStar USB HD (DVB-S/S2)",
 724                         { &technisat_usb2_id_table[0], NULL },
 725                         { NULL },
 726                 },
 727         },
 728
 729         .rc.core = {
 730                 .rc_interval = 100,
 731                 .rc_codes    = RC_MAP_TECHNISAT_USB2,
 732                 .module_name = "technisat-usb2",
 733                 .rc_query    = technisat_usb2_rc_query,
 734                 .allowed_protos = RC_TYPE_ALL,
 735                 .driver_type    = RC_DRIVER_IR_RAW,
 736         }
 737 };
 738
 739 static int technisat_usb2_probe(struct usb_interface *intf,
 740                 const struct usb_device_id *id)
 741 {
 742         struct dvb_usb_device *dev;
 743
 744         if (dvb_usb_device_init(intf, &technisat_usb2_devices, THIS_MODULE,
 745                                 &dev, adapter_nr) != 0)
 746                 return -ENODEV;
 747
 748         if (dev) {
 749                 struct technisat_usb2_state *state = dev->priv;
 750                 state->dev = dev;
 751
 752                 if (!disable_led_control) {
 753                         INIT_DELAYED_WORK(&state->green_led_work,
 754                                         technisat_usb2_green_led_control);
 755                         schedule_delayed_work(&state->green_led_work,
 756                                         msecs_to_jiffies(500));
 757                 }
 758         }
 759
 760         return 0;
 761 }
 762
 763 static void technisat_usb2_disconnect(struct usb_interface *intf)
 764 {
 765         struct dvb_usb_device *dev = usb_get_intfdata(intf);
 766
 767         /* work and stuff was only created when the device is is hot-state */
 768         if (dev != NULL) {
 769                 struct technisat_usb2_state *state = dev->priv;
 770                 if (state != NULL)
 771                         cancel_delayed_work_sync(&state->green_led_work);
 772         }
 773
 774         dvb_usb_device_exit(intf);
 775 }
 776
 777 static struct usb_driver technisat_usb2_driver = {
 778         .name       = "dvb_usb_technisat_usb2",
 779         .probe      = technisat_usb2_probe,
 780         .disconnect = technisat_usb2_disconnect,
 781         .id_table   = technisat_usb2_id_table,
 782 };
 783
 784 module_usb_driver(technisat_usb2_driver);
 785
 786 MODULE_AUTHOR("Patrick Boettcher <pboettcher@kernellabs.com>");
 787 MODULE_DESCRIPTION("Driver for Technisat DVB-S/S2 USB 2.0 device");
 788 MODULE_VERSION("1.0");
 789 MODULE_LICENSE("GPL");