Version:  2.0.40 2.2.26 2.4.37 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10

Linux/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 (default: 0 - LED control is active).");
 54 
 55 /* device private data */
 56 struct technisat_usb2_state {
 57         struct dvb_usb_device *dev;
 58         struct delayed_work green_led_work;
 59         u8 power_state;
 60 
 61         u16 last_scan_code;
 62 
 63         u8 buf[64];
 64 };
 65 
 66 /* debug print helpers */
 67 #define deb_info(args...)    dprintk(debug, 0x01, args)
 68 #define deb_eeprom(args...)  dprintk(debug, 0x02, args)
 69 #define deb_i2c(args...)     dprintk(debug, 0x04, args)
 70 #define deb_rc(args...)      dprintk(debug, 0x08, args)
 71 
 72 /* vendor requests */
 73 #define SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST 0xB3
 74 #define SET_FRONT_END_RESET_VENDOR_REQUEST         0xB4
 75 #define GET_VERSION_INFO_VENDOR_REQUEST            0xB5
 76 #define SET_GREEN_LED_VENDOR_REQUEST               0xB6
 77 #define SET_RED_LED_VENDOR_REQUEST                 0xB7
 78 #define GET_IR_DATA_VENDOR_REQUEST                 0xB8
 79 #define SET_LED_TIMER_DIVIDER_VENDOR_REQUEST       0xB9
 80 #define SET_USB_REENUMERATION                      0xBA
 81 
 82 /* i2c-access methods */
 83 #define I2C_SPEED_100KHZ_BIT 0x40
 84 
 85 #define I2C_STATUS_NAK 7
 86 #define I2C_STATUS_OK 8
 87 
 88 static int technisat_usb2_i2c_access(struct usb_device *udev,
 89                 u8 device_addr, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
 90 {
 91         u8 *b;
 92         int ret, actual_length;
 93 
 94         b = kmalloc(64, GFP_KERNEL);
 95         if (!b)
 96                 return -ENOMEM;
 97 
 98         deb_i2c("i2c-access: %02x, tx: ", device_addr);
 99         debug_dump(tx, txlen, deb_i2c);
100         deb_i2c(" ");
101 
102         if (txlen > 62) {
103                 err("i2c TX buffer can't exceed 62 bytes (dev 0x%02x)",
104                                 device_addr);
105                 txlen = 62;
106         }
107         if (rxlen > 62) {
108                 err("i2c RX buffer can't exceed 62 bytes (dev 0x%02x)",
109                                 device_addr);
110                 rxlen = 62;
111         }
112 
113         b[0] = I2C_SPEED_100KHZ_BIT;
114         b[1] = device_addr << 1;
115 
116         if (rx != NULL) {
117                 b[0] |= rxlen;
118                 b[1] |= 1;
119         }
120 
121         memcpy(&b[2], tx, txlen);
122         ret = usb_bulk_msg(udev,
123                         usb_sndbulkpipe(udev, 0x01),
124                         b, 2 + txlen,
125                         NULL, 1000);
126 
127         if (ret < 0) {
128                 err("i2c-error: out failed %02x = %d", device_addr, ret);
129                 goto err;
130         }
131 
132         ret = usb_bulk_msg(udev,
133                         usb_rcvbulkpipe(udev, 0x01),
134                         b, 64, &actual_length, 1000);
135         if (ret < 0) {
136                 err("i2c-error: in failed %02x = %d", device_addr, ret);
137                 goto err;
138         }
139 
140         if (b[0] != I2C_STATUS_OK) {
141                 err("i2c-error: %02x = %d", device_addr, b[0]);
142                 /* handle tuner-i2c-nak */
143                 if (!(b[0] == I2C_STATUS_NAK &&
144                                 device_addr == 0x60
145                                 /* && device_is_technisat_usb2 */))
146                         goto err;
147         }
148 
149         deb_i2c("status: %d, ", b[0]);
150 
151         if (rx != NULL) {
152                 memcpy(rx, &b[2], rxlen);
153 
154                 deb_i2c("rx (%d): ", rxlen);
155                 debug_dump(rx, rxlen, deb_i2c);
156         }
157 
158         deb_i2c("\n");
159 
160 err:
161         kfree(b);
162         return ret;
163 }
164 
165 static int technisat_usb2_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
166                                 int num)
167 {
168         int ret = 0, i;
169         struct dvb_usb_device *d = i2c_get_adapdata(adap);
170 
171         /* Ensure nobody else hits the i2c bus while we're sending our
172            sequence of messages, (such as the remote control thread) */
173         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
174                 return -EAGAIN;
175 
176         for (i = 0; i < num; i++) {
177                 if (i+1 < num && msg[i+1].flags & I2C_M_RD) {
178                         ret = technisat_usb2_i2c_access(d->udev, msg[i+1].addr,
179                                                 msg[i].buf, msg[i].len,
180                                                 msg[i+1].buf, msg[i+1].len);
181                         if (ret != 0)
182                                 break;
183                         i++;
184                 } else {
185                         ret = technisat_usb2_i2c_access(d->udev, msg[i].addr,
186                                                 msg[i].buf, msg[i].len,
187                                                 NULL, 0);
188                         if (ret != 0)
189                                 break;
190                 }
191         }
192 
193         if (ret == 0)
194                 ret = i;
195 
196         mutex_unlock(&d->i2c_mutex);
197 
198         return ret;
199 }
200 
201 static u32 technisat_usb2_i2c_func(struct i2c_adapter *adapter)
202 {
203         return I2C_FUNC_I2C;
204 }
205 
206 static struct i2c_algorithm technisat_usb2_i2c_algo = {
207         .master_xfer   = technisat_usb2_i2c_xfer,
208         .functionality = technisat_usb2_i2c_func,
209 };
210 
211 #if 0
212 static void technisat_usb2_frontend_reset(struct usb_device *udev)
213 {
214         usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
215                         SET_FRONT_END_RESET_VENDOR_REQUEST,
216                         USB_TYPE_VENDOR | USB_DIR_OUT,
217                         10, 0,
218                         NULL, 0, 500);
219 }
220 #endif
221 
222 /* LED control */
223 enum technisat_usb2_led_state {
224         TECH_LED_OFF,
225         TECH_LED_BLINK,
226         TECH_LED_ON,
227         TECH_LED_UNDEFINED
228 };
229 
230 static int technisat_usb2_set_led(struct dvb_usb_device *d, int red,
231                                   enum technisat_usb2_led_state st)
232 {
233         struct technisat_usb2_state *state = d->priv;
234         u8 *led = state->buf;
235         int ret;
236 
237         led[0] = red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST;
238 
239         if (disable_led_control && st != TECH_LED_OFF)
240                 return 0;
241 
242         switch (st) {
243         case TECH_LED_ON:
244                 led[1] = 0x82;
245                 break;
246         case TECH_LED_BLINK:
247                 led[1] = 0x82;
248                 if (red) {
249                         led[2] = 0x02;
250                         led[3] = 10;
251                         led[4] = 10;
252                 } else {
253                         led[2] = 0xff;
254                         led[3] = 50;
255                         led[4] = 50;
256                 }
257                 led[5] = 1;
258                 break;
259 
260         default:
261         case TECH_LED_OFF:
262                 led[1] = 0x80;
263                 break;
264         }
265 
266         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
267                 return -EAGAIN;
268 
269         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
270                 red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
271                 USB_TYPE_VENDOR | USB_DIR_OUT,
272                 0, 0,
273                 led, 8, 500);
274 
275         mutex_unlock(&d->i2c_mutex);
276         return ret;
277 }
278 
279 static int technisat_usb2_set_led_timer(struct dvb_usb_device *d, u8 red, u8 green)
280 {
281         struct technisat_usb2_state *state = d->priv;
282         u8 *b = state->buf;
283         int ret;
284 
285         b[0] = 0;
286 
287         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
288                 return -EAGAIN;
289 
290         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
291                 SET_LED_TIMER_DIVIDER_VENDOR_REQUEST,
292                 USB_TYPE_VENDOR | USB_DIR_OUT,
293                 (red << 8) | green, 0,
294                 b, 1, 500);
295 
296         mutex_unlock(&d->i2c_mutex);
297 
298         return ret;
299 }
300 
301 static void technisat_usb2_green_led_control(struct work_struct *work)
302 {
303         struct technisat_usb2_state *state =
304                 container_of(work, struct technisat_usb2_state, green_led_work.work);
305         struct dvb_frontend *fe = state->dev->adapter[0].fe_adap[0].fe;
306 
307         if (state->power_state == 0)
308                 goto schedule;
309 
310         if (fe != NULL) {
311                 enum fe_status status;
312 
313                 if (fe->ops.read_status(fe, &status) != 0)
314                         goto schedule;
315 
316                 if (status & FE_HAS_LOCK) {
317                         u32 ber;
318 
319                         if (fe->ops.read_ber(fe, &ber) != 0)
320                                 goto schedule;
321 
322                         if (ber > 1000)
323                                 technisat_usb2_set_led(state->dev, 0, TECH_LED_BLINK);
324                         else
325                                 technisat_usb2_set_led(state->dev, 0, TECH_LED_ON);
326                 } else
327                         technisat_usb2_set_led(state->dev, 0, TECH_LED_OFF);
328         }
329 
330 schedule:
331         schedule_delayed_work(&state->green_led_work,
332                         msecs_to_jiffies(500));
333 }
334 
335 /* method to find out whether the firmware has to be downloaded or not */
336 static int technisat_usb2_identify_state(struct usb_device *udev,
337                 struct dvb_usb_device_properties *props,
338                 struct dvb_usb_device_description **desc, int *cold)
339 {
340         int ret;
341         u8 *version;
342 
343         version = kmalloc(3, GFP_KERNEL);
344         if (!version)
345                 return -ENOMEM;
346 
347         /* first select the interface */
348         if (usb_set_interface(udev, 0, 1) != 0)
349                 err("could not set alternate setting to 0");
350         else
351                 info("set alternate setting");
352 
353         *cold = 0; /* by default do not download a firmware - just in case something is wrong */
354 
355         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
356                 GET_VERSION_INFO_VENDOR_REQUEST,
357                 USB_TYPE_VENDOR | USB_DIR_IN,
358                 0, 0,
359                 version, 3, 500);
360 
361         if (ret < 0)
362                 *cold = 1;
363         else {
364                 info("firmware version: %d.%d", version[1], version[2]);
365                 *cold = 0;
366         }
367 
368         kfree(version);
369 
370         return 0;
371 }
372 
373 /* power control */
374 static int technisat_usb2_power_ctrl(struct dvb_usb_device *d, int level)
375 {
376         struct technisat_usb2_state *state = d->priv;
377 
378         state->power_state = level;
379 
380         if (disable_led_control)
381                 return 0;
382 
383         /* green led is turned off in any case - will be turned on when tuning */
384         technisat_usb2_set_led(d, 0, TECH_LED_OFF);
385         /* red led is turned on all the time */
386         technisat_usb2_set_led(d, 1, TECH_LED_ON);
387         return 0;
388 }
389 
390 /* mac address reading - from the eeprom */
391 #if 0
392 static void technisat_usb2_eeprom_dump(struct dvb_usb_device *d)
393 {
394         u8 reg;
395         u8 b[16];
396         int i, j;
397 
398         /* full EEPROM dump */
399         for (j = 0; j < 256 * 4; j += 16) {
400                 reg = j;
401                 if (technisat_usb2_i2c_access(d->udev, 0x50 + j / 256, &reg, 1, b, 16) != 0)
402                         break;
403 
404                 deb_eeprom("EEPROM: %01x%02x: ", j / 256, reg);
405                 for (i = 0; i < 16; i++)
406                         deb_eeprom("%02x ", b[i]);
407                 deb_eeprom("\n");
408         }
409 }
410 #endif
411 
412 static u8 technisat_usb2_calc_lrc(const u8 *b, u16 length)
413 {
414         u8 lrc = 0;
415         while (--length)
416                 lrc ^= *b++;
417         return lrc;
418 }
419 
420 static int technisat_usb2_eeprom_lrc_read(struct dvb_usb_device *d,
421         u16 offset, u8 *b, u16 length, u8 tries)
422 {
423         u8 bo = offset & 0xff;
424         struct i2c_msg msg[] = {
425                 {
426                         .addr = 0x50 | ((offset >> 8) & 0x3),
427                         .buf = &bo,
428                         .len = 1
429                 }, {
430                         .addr = 0x50 | ((offset >> 8) & 0x3),
431                         .flags  = I2C_M_RD,
432                         .buf = b,
433                         .len = length
434                 }
435         };
436 
437         while (tries--) {
438                 int status;
439 
440                 if (i2c_transfer(&d->i2c_adap, msg, 2) != 2)
441                         break;
442 
443                 status =
444                         technisat_usb2_calc_lrc(b, length - 1) == b[length - 1];
445 
446                 if (status)
447                         return 0;
448         }
449 
450         return -EREMOTEIO;
451 }
452 
453 #define EEPROM_MAC_START 0x3f8
454 #define EEPROM_MAC_TOTAL 8
455 static int technisat_usb2_read_mac_address(struct dvb_usb_device *d,
456                 u8 mac[])
457 {
458         u8 buf[EEPROM_MAC_TOTAL];
459 
460         if (technisat_usb2_eeprom_lrc_read(d, EEPROM_MAC_START,
461                                 buf, EEPROM_MAC_TOTAL, 4) != 0)
462                 return -ENODEV;
463 
464         memcpy(mac, buf, 6);
465         return 0;
466 }
467 
468 static struct stv090x_config technisat_usb2_stv090x_config;
469 
470 /* frontend attach */
471 static int technisat_usb2_set_voltage(struct dvb_frontend *fe,
472                                       enum fe_sec_voltage voltage)
473 {
474         int i;
475         u8 gpio[3] = { 0 }; /* 0 = 2, 1 = 3, 2 = 4 */
476 
477         gpio[2] = 1; /* high - voltage ? */
478 
479         switch (voltage) {
480         case SEC_VOLTAGE_13:
481                 gpio[0] = 1;
482                 break;
483         case SEC_VOLTAGE_18:
484                 gpio[0] = 1;
485                 gpio[1] = 1;
486                 break;
487         default:
488         case SEC_VOLTAGE_OFF:
489                 break;
490         }
491 
492         for (i = 0; i < 3; i++)
493                 if (technisat_usb2_stv090x_config.set_gpio(fe, i+2, 0,
494                                                            gpio[i], 0) != 0)
495                         return -EREMOTEIO;
496         return 0;
497 }
498 
499 static struct stv090x_config technisat_usb2_stv090x_config = {
500         .device         = STV0903,
501         .demod_mode     = STV090x_SINGLE,
502         .clk_mode       = STV090x_CLK_EXT,
503 
504         .xtal           = 8000000,
505         .address        = 0x68,
506 
507         .ts1_mode       = STV090x_TSMODE_DVBCI,
508         .ts1_clk        = 13400000,
509         .ts1_tei        = 1,
510 
511         .repeater_level = STV090x_RPTLEVEL_64,
512 
513         .tuner_bbgain   = 6,
514 };
515 
516 static struct stv6110x_config technisat_usb2_stv6110x_config = {
517         .addr           = 0x60,
518         .refclk         = 16000000,
519         .clk_div        = 2,
520 };
521 
522 static int technisat_usb2_frontend_attach(struct dvb_usb_adapter *a)
523 {
524         struct usb_device *udev = a->dev->udev;
525         int ret;
526 
527         a->fe_adap[0].fe = dvb_attach(stv090x_attach, &technisat_usb2_stv090x_config,
528                         &a->dev->i2c_adap, STV090x_DEMODULATOR_0);
529 
530         if (a->fe_adap[0].fe) {
531                 const struct stv6110x_devctl *ctl;
532 
533                 ctl = dvb_attach(stv6110x_attach,
534                                 a->fe_adap[0].fe,
535                                 &technisat_usb2_stv6110x_config,
536                                 &a->dev->i2c_adap);
537 
538                 if (ctl) {
539                         technisat_usb2_stv090x_config.tuner_init          = ctl->tuner_init;
540                         technisat_usb2_stv090x_config.tuner_sleep         = ctl->tuner_sleep;
541                         technisat_usb2_stv090x_config.tuner_set_mode      = ctl->tuner_set_mode;
542                         technisat_usb2_stv090x_config.tuner_set_frequency = ctl->tuner_set_frequency;
543                         technisat_usb2_stv090x_config.tuner_get_frequency = ctl->tuner_get_frequency;
544                         technisat_usb2_stv090x_config.tuner_set_bandwidth = ctl->tuner_set_bandwidth;
545                         technisat_usb2_stv090x_config.tuner_get_bandwidth = ctl->tuner_get_bandwidth;
546                         technisat_usb2_stv090x_config.tuner_set_bbgain    = ctl->tuner_set_bbgain;
547                         technisat_usb2_stv090x_config.tuner_get_bbgain    = ctl->tuner_get_bbgain;
548                         technisat_usb2_stv090x_config.tuner_set_refclk    = ctl->tuner_set_refclk;
549                         technisat_usb2_stv090x_config.tuner_get_status    = ctl->tuner_get_status;
550 
551                         /* call the init function once to initialize
552                            tuner's clock output divider and demod's
553                            master clock */
554                         if (a->fe_adap[0].fe->ops.init)
555                                 a->fe_adap[0].fe->ops.init(a->fe_adap[0].fe);
556 
557                         if (mutex_lock_interruptible(&a->dev->i2c_mutex) < 0)
558                                 return -EAGAIN;
559 
560                         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
561                                         SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST,
562                                         USB_TYPE_VENDOR | USB_DIR_OUT,
563                                         0, 0,
564                                         NULL, 0, 500);
565                         mutex_unlock(&a->dev->i2c_mutex);
566 
567                         if (ret != 0)
568                                 err("could not set IF_CLK to external");
569 
570                         a->fe_adap[0].fe->ops.set_voltage = technisat_usb2_set_voltage;
571 
572                         /* if everything was successful assign a nice name to the frontend */
573                         strlcpy(a->fe_adap[0].fe->ops.info.name, a->dev->desc->name,
574                                         sizeof(a->fe_adap[0].fe->ops.info.name));
575                 } else {
576                         dvb_frontend_detach(a->fe_adap[0].fe);
577                         a->fe_adap[0].fe = NULL;
578                 }
579         }
580 
581         technisat_usb2_set_led_timer(a->dev, 1, 1);
582 
583         return a->fe_adap[0].fe == NULL ? -ENODEV : 0;
584 }
585 
586 /* Remote control */
587 
588 /* the device is giving providing raw IR-signals to the host mapping
589  * it only to one remote control is just the default implementation
590  */
591 #define NOMINAL_IR_BIT_TRANSITION_TIME_US 889
592 #define NOMINAL_IR_BIT_TIME_US (2 * NOMINAL_IR_BIT_TRANSITION_TIME_US)
593 
594 #define FIRMWARE_CLOCK_TICK 83333
595 #define FIRMWARE_CLOCK_DIVISOR 256
596 
597 #define IR_PERCENT_TOLERANCE 15
598 
599 #define NOMINAL_IR_BIT_TRANSITION_TICKS ((NOMINAL_IR_BIT_TRANSITION_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
600 #define NOMINAL_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICKS / FIRMWARE_CLOCK_DIVISOR)
601 
602 #define NOMINAL_IR_BIT_TIME_TICKS ((NOMINAL_IR_BIT_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
603 #define NOMINAL_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICKS / FIRMWARE_CLOCK_DIVISOR)
604 
605 #define MINIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT - ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
606 #define MAXIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT + ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
607 
608 #define MINIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT - ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
609 #define MAXIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT + ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
610 
611 static int technisat_usb2_get_ir(struct dvb_usb_device *d)
612 {
613         struct technisat_usb2_state *state = d->priv;
614         u8 *buf = state->buf;
615         u8 *b;
616         int ret;
617         struct ir_raw_event ev;
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         b = buf+1;
654 
655 #if 0
656         deb_rc("RC: %d ", ret);
657         debug_dump(b, ret, deb_rc);
658 #endif
659 
660         ev.pulse = 0;
661         while (1) {
662                 ev.pulse = !ev.pulse;
663                 ev.duration = (*b * FIRMWARE_CLOCK_DIVISOR * FIRMWARE_CLOCK_TICK) / 1000;
664                 ir_raw_event_store(d->rc_dev, &ev);
665 
666                 b++;
667                 if (*b == 0xff) {
668                         ev.pulse = 0;
669                         ev.duration = 888888*2;
670                         ir_raw_event_store(d->rc_dev, &ev);
671                         break;
672                 }
673         }
674 
675         ir_raw_event_handle(d->rc_dev);
676 
677         return 1;
678 }
679 
680 static int technisat_usb2_rc_query(struct dvb_usb_device *d)
681 {
682         int ret = technisat_usb2_get_ir(d);
683 
684         if (ret < 0)
685                 return ret;
686 
687         if (ret == 0)
688                 return 0;
689 
690         if (!disable_led_control)
691                 technisat_usb2_set_led(d, 1, TECH_LED_BLINK);
692 
693         return 0;
694 }
695 
696 /* DVB-USB and USB stuff follows */
697 static struct usb_device_id technisat_usb2_id_table[] = {
698         { USB_DEVICE(USB_VID_TECHNISAT, USB_PID_TECHNISAT_USB2_DVB_S2) },
699         { 0 }           /* Terminating entry */
700 };
701 MODULE_DEVICE_TABLE(usb, technisat_usb2_id_table);
702 
703 /* device description */
704 static struct dvb_usb_device_properties technisat_usb2_devices = {
705         .caps              = DVB_USB_IS_AN_I2C_ADAPTER,
706 
707         .usb_ctrl          = CYPRESS_FX2,
708 
709         .identify_state    = technisat_usb2_identify_state,
710         .firmware          = "dvb-usb-SkyStar_USB_HD_FW_v17_63.HEX.fw",
711 
712         .size_of_priv      = sizeof(struct technisat_usb2_state),
713 
714         .i2c_algo          = &technisat_usb2_i2c_algo,
715 
716         .power_ctrl        = technisat_usb2_power_ctrl,
717         .read_mac_address  = technisat_usb2_read_mac_address,
718 
719         .num_adapters = 1,
720         .adapter = {
721                 {
722                 .num_frontends = 1,
723                 .fe = {{
724                         .frontend_attach  = technisat_usb2_frontend_attach,
725 
726                         .stream = {
727                                 .type = USB_ISOC,
728                                 .count = 4,
729                                 .endpoint = 0x2,
730                                 .u = {
731                                         .isoc = {
732                                                 .framesperurb = 32,
733                                                 .framesize = 2048,
734                                                 .interval = 1,
735                                         }
736                                 }
737                         },
738                 }},
739                         .size_of_priv = 0,
740                 },
741         },
742 
743         .num_device_descs = 1,
744         .devices = {
745                 {   "Technisat SkyStar USB HD (DVB-S/S2)",
746                         { &technisat_usb2_id_table[0], NULL },
747                         { NULL },
748                 },
749         },
750 
751         .rc.core = {
752                 .rc_interval = 100,
753                 .rc_codes    = RC_MAP_TECHNISAT_USB2,
754                 .module_name = "technisat-usb2",
755                 .rc_query    = technisat_usb2_rc_query,
756                 .allowed_protos = RC_BIT_ALL,
757                 .driver_type    = RC_DRIVER_IR_RAW,
758         }
759 };
760 
761 static int technisat_usb2_probe(struct usb_interface *intf,
762                 const struct usb_device_id *id)
763 {
764         struct dvb_usb_device *dev;
765 
766         if (dvb_usb_device_init(intf, &technisat_usb2_devices, THIS_MODULE,
767                                 &dev, adapter_nr) != 0)
768                 return -ENODEV;
769 
770         if (dev) {
771                 struct technisat_usb2_state *state = dev->priv;
772                 state->dev = dev;
773 
774                 if (!disable_led_control) {
775                         INIT_DELAYED_WORK(&state->green_led_work,
776                                         technisat_usb2_green_led_control);
777                         schedule_delayed_work(&state->green_led_work,
778                                         msecs_to_jiffies(500));
779                 }
780         }
781 
782         return 0;
783 }
784 
785 static void technisat_usb2_disconnect(struct usb_interface *intf)
786 {
787         struct dvb_usb_device *dev = usb_get_intfdata(intf);
788 
789         /* work and stuff was only created when the device is is hot-state */
790         if (dev != NULL) {
791                 struct technisat_usb2_state *state = dev->priv;
792                 if (state != NULL)
793                         cancel_delayed_work_sync(&state->green_led_work);
794         }
795 
796         dvb_usb_device_exit(intf);
797 }
798 
799 static struct usb_driver technisat_usb2_driver = {
800         .name       = "dvb_usb_technisat_usb2",
801         .probe      = technisat_usb2_probe,
802         .disconnect = technisat_usb2_disconnect,
803         .id_table   = technisat_usb2_id_table,
804 };
805 
806 module_usb_driver(technisat_usb2_driver);
807 
808 MODULE_AUTHOR("Patrick Boettcher <pboettcher@kernellabs.com>");
809 MODULE_DESCRIPTION("Driver for Technisat DVB-S/S2 USB 2.0 device");
810 MODULE_VERSION("1.0");
811 MODULE_LICENSE("GPL");
812 

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