RT-AC66 3.0.0.4.374.130 core
[tomato.git] / release / src-rt-6.x / linux / linux-2.6 / drivers / media / dvb / frontends / stv0299.c
blob18768d2f6d40116ea827ad6bd1344a0dea5928a9
1 /*
2 Driver for ST STV0299 demodulator
4 Copyright (C) 2001-2002 Convergence Integrated Media GmbH
5 <ralph@convergence.de>,
6 <holger@convergence.de>,
7 <js@convergence.de>
10 Philips SU1278/SH
12 Copyright (C) 2002 by Peter Schildmann <peter.schildmann@web.de>
15 LG TDQF-S001F
17 Copyright (C) 2002 Felix Domke <tmbinc@elitedvb.net>
18 & Andreas Oberritter <obi@linuxtv.org>
21 Support for Samsung TBMU24112IMB used on Technisat SkyStar2 rev. 2.6B
23 Copyright (C) 2003 Vadim Catana <skystar@moldova.cc>:
25 Support for Philips SU1278 on Technotrend hardware
27 Copyright (C) 2004 Andrew de Quincey <adq_dvb@lidskialf.net>
29 This program is free software; you can redistribute it and/or modify
30 it under the terms of the GNU General Public License as published by
31 the Free Software Foundation; either version 2 of the License, or
32 (at your option) any later version.
34 This program is distributed in the hope that it will be useful,
35 but WITHOUT ANY WARRANTY; without even the implied warranty of
36 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 GNU General Public License for more details.
39 You should have received a copy of the GNU General Public License
40 along with this program; if not, write to the Free Software
41 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
45 #include <linux/init.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/moduleparam.h>
49 #include <linux/string.h>
50 #include <linux/slab.h>
51 #include <linux/jiffies.h>
52 #include <asm/div64.h>
54 #include "dvb_frontend.h"
55 #include "stv0299.h"
57 struct stv0299_state {
58 struct i2c_adapter* i2c;
59 const struct stv0299_config* config;
60 struct dvb_frontend frontend;
62 u8 initialised:1;
63 u32 tuner_frequency;
64 u32 symbol_rate;
65 fe_code_rate_t fec_inner;
66 int errmode;
69 #define STATUS_BER 0
70 #define STATUS_UCBLOCKS 1
72 static int debug;
73 static int debug_legacy_dish_switch;
74 #define dprintk(args...) \
75 do { \
76 if (debug) printk(KERN_DEBUG "stv0299: " args); \
77 } while (0)
80 static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data)
82 int ret;
83 u8 buf [] = { reg, data };
84 struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
86 ret = i2c_transfer (state->i2c, &msg, 1);
88 if (ret != 1)
89 dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
90 "ret == %i)\n", __FUNCTION__, reg, data, ret);
92 return (ret != 1) ? -EREMOTEIO : 0;
95 static int stv0299_write(struct dvb_frontend* fe, u8 *buf, int len)
97 struct stv0299_state* state = fe->demodulator_priv;
99 if (len != 2)
100 return -EINVAL;
102 return stv0299_writeregI(state, buf[0], buf[1]);
105 static u8 stv0299_readreg (struct stv0299_state* state, u8 reg)
107 int ret;
108 u8 b0 [] = { reg };
109 u8 b1 [] = { 0 };
110 struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
111 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
113 ret = i2c_transfer (state->i2c, msg, 2);
115 if (ret != 2)
116 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
117 __FUNCTION__, reg, ret);
119 return b1[0];
122 static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len)
124 int ret;
125 struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = &reg1, .len = 1 },
126 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
128 ret = i2c_transfer (state->i2c, msg, 2);
130 if (ret != 2)
131 dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
133 return ret == 2 ? 0 : ret;
136 static int stv0299_set_FEC (struct stv0299_state* state, fe_code_rate_t fec)
138 dprintk ("%s\n", __FUNCTION__);
140 switch (fec) {
141 case FEC_AUTO:
143 return stv0299_writeregI (state, 0x31, 0x1f);
145 case FEC_1_2:
147 return stv0299_writeregI (state, 0x31, 0x01);
149 case FEC_2_3:
151 return stv0299_writeregI (state, 0x31, 0x02);
153 case FEC_3_4:
155 return stv0299_writeregI (state, 0x31, 0x04);
157 case FEC_5_6:
159 return stv0299_writeregI (state, 0x31, 0x08);
161 case FEC_7_8:
163 return stv0299_writeregI (state, 0x31, 0x10);
165 default:
167 return -EINVAL;
172 static fe_code_rate_t stv0299_get_fec (struct stv0299_state* state)
174 static fe_code_rate_t fec_tab [] = { FEC_2_3, FEC_3_4, FEC_5_6,
175 FEC_7_8, FEC_1_2 };
176 u8 index;
178 dprintk ("%s\n", __FUNCTION__);
180 index = stv0299_readreg (state, 0x1b);
181 index &= 0x7;
183 if (index > 4)
184 return FEC_AUTO;
186 return fec_tab [index];
189 static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout)
191 unsigned long start = jiffies;
193 dprintk ("%s\n", __FUNCTION__);
195 while (stv0299_readreg(state, 0x0a) & 1) {
196 if (jiffies - start > timeout) {
197 dprintk ("%s: timeout!!\n", __FUNCTION__);
198 return -ETIMEDOUT;
200 msleep(10);
203 return 0;
206 static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout)
208 unsigned long start = jiffies;
210 dprintk ("%s\n", __FUNCTION__);
212 while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) {
213 if (jiffies - start > timeout) {
214 dprintk ("%s: timeout!!\n", __FUNCTION__);
215 return -ETIMEDOUT;
217 msleep(10);
220 return 0;
223 static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate)
225 struct stv0299_state* state = fe->demodulator_priv;
226 u64 big = srate;
227 u32 ratio;
229 // check rate is within limits
230 if ((srate < 1000000) || (srate > 45000000)) return -EINVAL;
232 // calculate value to program
233 big = big << 20;
234 big += (state->config->mclk-1); // round correctly
235 do_div(big, state->config->mclk);
236 ratio = big << 4;
238 return state->config->set_symbol_rate(fe, srate, ratio);
241 static int stv0299_get_symbolrate (struct stv0299_state* state)
243 u32 Mclk = state->config->mclk / 4096L;
244 u32 srate;
245 s32 offset;
246 u8 sfr[3];
247 s8 rtf;
249 dprintk ("%s\n", __FUNCTION__);
251 stv0299_readregs (state, 0x1f, sfr, 3);
252 stv0299_readregs (state, 0x1a, &rtf, 1);
254 srate = (sfr[0] << 8) | sfr[1];
255 srate *= Mclk;
256 srate /= 16;
257 srate += (sfr[2] >> 4) * Mclk / 256;
258 offset = (s32) rtf * (srate / 4096L);
259 offset /= 128;
261 dprintk ("%s : srate = %i\n", __FUNCTION__, srate);
262 dprintk ("%s : ofset = %i\n", __FUNCTION__, offset);
264 srate += offset;
266 srate += 1000;
267 srate /= 2000;
268 srate *= 2000;
270 return srate;
273 static int stv0299_send_diseqc_msg (struct dvb_frontend* fe,
274 struct dvb_diseqc_master_cmd *m)
276 struct stv0299_state* state = fe->demodulator_priv;
277 u8 val;
278 int i;
280 dprintk ("%s\n", __FUNCTION__);
282 if (stv0299_wait_diseqc_idle (state, 100) < 0)
283 return -ETIMEDOUT;
285 val = stv0299_readreg (state, 0x08);
287 if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x6)) /* DiSEqC mode */
288 return -EREMOTEIO;
290 for (i=0; i<m->msg_len; i++) {
291 if (stv0299_wait_diseqc_fifo (state, 100) < 0)
292 return -ETIMEDOUT;
294 if (stv0299_writeregI (state, 0x09, m->msg[i]))
295 return -EREMOTEIO;
298 if (stv0299_wait_diseqc_idle (state, 100) < 0)
299 return -ETIMEDOUT;
301 return 0;
304 static int stv0299_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
306 struct stv0299_state* state = fe->demodulator_priv;
307 u8 val;
309 dprintk ("%s\n", __FUNCTION__);
311 if (stv0299_wait_diseqc_idle (state, 100) < 0)
312 return -ETIMEDOUT;
314 val = stv0299_readreg (state, 0x08);
316 if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x2)) /* burst mode */
317 return -EREMOTEIO;
319 if (stv0299_writeregI (state, 0x09, burst == SEC_MINI_A ? 0x00 : 0xff))
320 return -EREMOTEIO;
322 if (stv0299_wait_diseqc_idle (state, 100) < 0)
323 return -ETIMEDOUT;
325 if (stv0299_writeregI (state, 0x08, val))
326 return -EREMOTEIO;
328 return 0;
331 static int stv0299_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
333 struct stv0299_state* state = fe->demodulator_priv;
334 u8 val;
336 if (stv0299_wait_diseqc_idle (state, 100) < 0)
337 return -ETIMEDOUT;
339 val = stv0299_readreg (state, 0x08);
341 switch (tone) {
342 case SEC_TONE_ON:
343 return stv0299_writeregI (state, 0x08, val | 0x3);
345 case SEC_TONE_OFF:
346 return stv0299_writeregI (state, 0x08, (val & ~0x3) | 0x02);
348 default:
349 return -EINVAL;
353 static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
355 struct stv0299_state* state = fe->demodulator_priv;
356 u8 reg0x08;
357 u8 reg0x0c;
359 dprintk("%s: %s\n", __FUNCTION__,
360 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
361 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
363 reg0x08 = stv0299_readreg (state, 0x08);
364 reg0x0c = stv0299_readreg (state, 0x0c);
367 * H/V switching over OP0, OP1 and OP2 are LNB power enable bits
369 reg0x0c &= 0x0f;
371 if (voltage == SEC_VOLTAGE_OFF) {
372 stv0299_writeregI (state, 0x0c, 0x00); /* LNB power off! */
373 return stv0299_writeregI (state, 0x08, 0x00); /* LNB power off! */
376 stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
378 switch (voltage) {
379 case SEC_VOLTAGE_13:
380 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) reg0x0c |= 0x10;
381 else reg0x0c |= 0x40;
383 return stv0299_writeregI(state, 0x0c, reg0x0c);
385 case SEC_VOLTAGE_18:
386 return stv0299_writeregI(state, 0x0c, reg0x0c | 0x50);
387 default:
388 return -EINVAL;
392 static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long cmd)
394 struct stv0299_state* state = fe->demodulator_priv;
395 u8 reg0x08;
396 u8 reg0x0c;
397 u8 lv_mask = 0x40;
398 u8 last = 1;
399 int i;
400 struct timeval nexttime;
401 struct timeval tv[10];
403 reg0x08 = stv0299_readreg (state, 0x08);
404 reg0x0c = stv0299_readreg (state, 0x0c);
405 reg0x0c &= 0x0f;
406 stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
407 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
408 lv_mask = 0x10;
410 cmd = cmd << 1;
411 if (debug_legacy_dish_switch)
412 printk ("%s switch command: 0x%04lx\n",__FUNCTION__, cmd);
414 do_gettimeofday (&nexttime);
415 if (debug_legacy_dish_switch)
416 memcpy (&tv[0], &nexttime, sizeof (struct timeval));
417 stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */
419 dvb_frontend_sleep_until(&nexttime, 32000);
421 for (i=0; i<9; i++) {
422 if (debug_legacy_dish_switch)
423 do_gettimeofday (&tv[i+1]);
424 if((cmd & 0x01) != last) {
425 /* set voltage to (last ? 13V : 18V) */
426 stv0299_writeregI (state, 0x0c, reg0x0c | (last ? lv_mask : 0x50));
427 last = (last) ? 0 : 1;
430 cmd = cmd >> 1;
432 if (i != 8)
433 dvb_frontend_sleep_until(&nexttime, 8000);
435 if (debug_legacy_dish_switch) {
436 printk ("%s(%d): switch delay (should be 32k followed by all 8k\n",
437 __FUNCTION__, fe->dvb->num);
438 for (i = 1; i < 10; i++)
439 printk ("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
442 return 0;
445 static int stv0299_init (struct dvb_frontend* fe)
447 struct stv0299_state* state = fe->demodulator_priv;
448 int i;
450 dprintk("stv0299: init chip\n");
452 for (i=0; !(state->config->inittab[i] == 0xff && state->config->inittab[i+1] == 0xff); i+=2)
453 stv0299_writeregI(state, state->config->inittab[i], state->config->inittab[i+1]);
455 return 0;
458 static int stv0299_read_status(struct dvb_frontend* fe, fe_status_t* status)
460 struct stv0299_state* state = fe->demodulator_priv;
462 u8 signal = 0xff - stv0299_readreg (state, 0x18);
463 u8 sync = stv0299_readreg (state, 0x1b);
465 dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __FUNCTION__, sync);
466 *status = 0;
468 if (signal > 10)
469 *status |= FE_HAS_SIGNAL;
471 if (sync & 0x80)
472 *status |= FE_HAS_CARRIER;
474 if (sync & 0x10)
475 *status |= FE_HAS_VITERBI;
477 if (sync & 0x08)
478 *status |= FE_HAS_SYNC;
480 if ((sync & 0x98) == 0x98)
481 *status |= FE_HAS_LOCK;
483 return 0;
486 static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber)
488 struct stv0299_state* state = fe->demodulator_priv;
490 if (state->errmode != STATUS_BER) return 0;
491 *ber = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
493 return 0;
496 static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength)
498 struct stv0299_state* state = fe->demodulator_priv;
500 s32 signal = 0xffff - ((stv0299_readreg (state, 0x18) << 8)
501 | stv0299_readreg (state, 0x19));
503 dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n", __FUNCTION__,
504 stv0299_readreg (state, 0x18),
505 stv0299_readreg (state, 0x19), (int) signal);
507 signal = signal * 5 / 4;
508 *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
510 return 0;
513 static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr)
515 struct stv0299_state* state = fe->demodulator_priv;
517 s32 xsnr = 0xffff - ((stv0299_readreg (state, 0x24) << 8)
518 | stv0299_readreg (state, 0x25));
519 xsnr = 3 * (xsnr - 0xa100);
520 *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
522 return 0;
525 static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
527 struct stv0299_state* state = fe->demodulator_priv;
529 if (state->errmode != STATUS_UCBLOCKS) *ucblocks = 0;
530 else *ucblocks = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
532 return 0;
535 static int stv0299_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
537 struct stv0299_state* state = fe->demodulator_priv;
538 int invval = 0;
540 dprintk ("%s : FE_SET_FRONTEND\n", __FUNCTION__);
542 // set the inversion
543 if (p->inversion == INVERSION_OFF) invval = 0;
544 else if (p->inversion == INVERSION_ON) invval = 1;
545 else {
546 printk("stv0299 does not support auto-inversion\n");
547 return -EINVAL;
549 if (state->config->invert) invval = (~invval) & 1;
550 stv0299_writeregI(state, 0x0c, (stv0299_readreg(state, 0x0c) & 0xfe) | invval);
552 if (fe->ops.tuner_ops.set_params) {
553 fe->ops.tuner_ops.set_params(fe, p);
554 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
557 stv0299_set_FEC (state, p->u.qpsk.fec_inner);
558 stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate);
559 stv0299_writeregI(state, 0x22, 0x00);
560 stv0299_writeregI(state, 0x23, 0x00);
562 state->tuner_frequency = p->frequency;
563 state->fec_inner = p->u.qpsk.fec_inner;
564 state->symbol_rate = p->u.qpsk.symbol_rate;
566 return 0;
569 static int stv0299_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
571 struct stv0299_state* state = fe->demodulator_priv;
572 s32 derot_freq;
573 int invval;
575 derot_freq = (s32)(s16) ((stv0299_readreg (state, 0x22) << 8)
576 | stv0299_readreg (state, 0x23));
578 derot_freq *= (state->config->mclk >> 16);
579 derot_freq += 500;
580 derot_freq /= 1000;
582 p->frequency += derot_freq;
584 invval = stv0299_readreg (state, 0x0c) & 1;
585 if (state->config->invert) invval = (~invval) & 1;
586 p->inversion = invval ? INVERSION_ON : INVERSION_OFF;
588 p->u.qpsk.fec_inner = stv0299_get_fec (state);
589 p->u.qpsk.symbol_rate = stv0299_get_symbolrate (state);
591 return 0;
594 static int stv0299_sleep(struct dvb_frontend* fe)
596 struct stv0299_state* state = fe->demodulator_priv;
598 stv0299_writeregI(state, 0x02, 0x80);
599 state->initialised = 0;
601 return 0;
604 static int stv0299_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
606 struct stv0299_state* state = fe->demodulator_priv;
608 if (enable) {
609 stv0299_writeregI(state, 0x05, 0xb5);
610 } else {
611 stv0299_writeregI(state, 0x05, 0x35);
613 udelay(1);
614 return 0;
617 static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
619 struct stv0299_state* state = fe->demodulator_priv;
621 fesettings->min_delay_ms = state->config->min_delay_ms;
622 if (fesettings->parameters.u.qpsk.symbol_rate < 10000000) {
623 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 32000;
624 fesettings->max_drift = 5000;
625 } else {
626 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 16000;
627 fesettings->max_drift = fesettings->parameters.u.qpsk.symbol_rate / 2000;
629 return 0;
632 static void stv0299_release(struct dvb_frontend* fe)
634 struct stv0299_state* state = fe->demodulator_priv;
635 kfree(state);
638 static struct dvb_frontend_ops stv0299_ops;
640 struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
641 struct i2c_adapter* i2c)
643 struct stv0299_state* state = NULL;
644 int id;
646 /* allocate memory for the internal state */
647 state = kmalloc(sizeof(struct stv0299_state), GFP_KERNEL);
648 if (state == NULL) goto error;
650 /* setup the state */
651 state->config = config;
652 state->i2c = i2c;
653 state->initialised = 0;
654 state->tuner_frequency = 0;
655 state->symbol_rate = 0;
656 state->fec_inner = 0;
657 state->errmode = STATUS_BER;
659 /* check if the demod is there */
660 stv0299_writeregI(state, 0x02, 0x34); /* standby off */
661 msleep(200);
662 id = stv0299_readreg(state, 0x00);
664 /* register 0x00 contains 0xa1 for STV0299 and STV0299B */
665 /* register 0x00 might contain 0x80 when returning from standby */
666 if (id != 0xa1 && id != 0x80) goto error;
668 /* create dvb_frontend */
669 memcpy(&state->frontend.ops, &stv0299_ops, sizeof(struct dvb_frontend_ops));
670 state->frontend.demodulator_priv = state;
671 return &state->frontend;
673 error:
674 kfree(state);
675 return NULL;
678 static struct dvb_frontend_ops stv0299_ops = {
680 .info = {
681 .name = "ST STV0299 DVB-S",
682 .type = FE_QPSK,
683 .frequency_min = 950000,
684 .frequency_max = 2150000,
685 .frequency_stepsize = 125, /* kHz for QPSK frontends */
686 .frequency_tolerance = 0,
687 .symbol_rate_min = 1000000,
688 .symbol_rate_max = 45000000,
689 .symbol_rate_tolerance = 500, /* ppm */
690 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
691 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
692 FE_CAN_QPSK |
693 FE_CAN_FEC_AUTO
696 .release = stv0299_release,
698 .init = stv0299_init,
699 .sleep = stv0299_sleep,
700 .write = stv0299_write,
701 .i2c_gate_ctrl = stv0299_i2c_gate_ctrl,
703 .set_frontend = stv0299_set_frontend,
704 .get_frontend = stv0299_get_frontend,
705 .get_tune_settings = stv0299_get_tune_settings,
707 .read_status = stv0299_read_status,
708 .read_ber = stv0299_read_ber,
709 .read_signal_strength = stv0299_read_signal_strength,
710 .read_snr = stv0299_read_snr,
711 .read_ucblocks = stv0299_read_ucblocks,
713 .diseqc_send_master_cmd = stv0299_send_diseqc_msg,
714 .diseqc_send_burst = stv0299_send_diseqc_burst,
715 .set_tone = stv0299_set_tone,
716 .set_voltage = stv0299_set_voltage,
717 .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd,
720 module_param(debug_legacy_dish_switch, int, 0444);
721 MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches");
723 module_param(debug, int, 0644);
724 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
726 MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver");
727 MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, "
728 "Andreas Oberritter, Andrew de Quincey, Kenneth Aafly");
729 MODULE_LICENSE("GPL");
731 EXPORT_SYMBOL(stv0299_attach);