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Merge ../torvalds-2.6/
[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / drivers / media / dvb / frontends / stv0299.c
1 /*
2 Driver for ST STV0299 demodulator
3
4 Copyright (C) 2001-2002 Convergence Integrated Media GmbH
5 <ralph@convergence.de>,
6 <holger@convergence.de>,
7 <js@convergence.de>
8
9
10 Philips SU1278/SH
11
12 Copyright (C) 2002 by Peter Schildmann <peter.schildmann@web.de>
13
14
15 LG TDQF-S001F
16
17 Copyright (C) 2002 Felix Domke <tmbinc@elitedvb.net>
18 & Andreas Oberritter <obi@linuxtv.org>
19
20
21 Support for Samsung TBMU24112IMB used on Technisat SkyStar2 rev. 2.6B
22
23 Copyright (C) 2003 Vadim Catana <skystar@moldova.cc>:
24
25 Support for Philips SU1278 on Technotrend hardware
26
27 Copyright (C) 2004 Andrew de Quincey <adq_dvb@lidskialf.net>
28
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.
33
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.
38
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.
42
43 */
44
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 <asm/div64.h>
52
53 #include "dvb_frontend.h"
54 #include "stv0299.h"
55
56 struct stv0299_state {
57 struct i2c_adapter* i2c;
58 struct dvb_frontend_ops ops;
59 const struct stv0299_config* config;
60 struct dvb_frontend frontend;
61
62 u8 initialised:1;
63 u32 tuner_frequency;
64 u32 symbol_rate;
65 fe_code_rate_t fec_inner;
66 };
67
68 static int debug;
69 static int debug_legacy_dish_switch;
70 #define dprintk(args...) \
71 do { \
72 if (debug) printk(KERN_DEBUG "stv0299: " args); \
73 } while (0)
74
75
76 static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data)
77 {
78 int ret;
79 u8 buf [] = { reg, data };
80 struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
81
82 ret = i2c_transfer (state->i2c, &msg, 1);
83
84 if (ret != 1)
85 dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
86 "ret == %i)\n", __FUNCTION__, reg, data, ret);
87
88 return (ret != 1) ? -EREMOTEIO : 0;
89 }
90
91 int stv0299_writereg (struct dvb_frontend* fe, u8 reg, u8 data)
92 {
93 struct stv0299_state* state = fe->demodulator_priv;
94
95 return stv0299_writeregI(state, reg, data);
96 }
97
98 static u8 stv0299_readreg (struct stv0299_state* state, u8 reg)
99 {
100 int ret;
101 u8 b0 [] = { reg };
102 u8 b1 [] = { 0 };
103 struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
104 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
105
106 ret = i2c_transfer (state->i2c, msg, 2);
107
108 if (ret != 2)
109 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
110 __FUNCTION__, reg, ret);
111
112 return b1[0];
113 }
114
115 static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len)
116 {
117 int ret;
118 struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = &reg1, .len = 1 },
119 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
120
121 ret = i2c_transfer (state->i2c, msg, 2);
122
123 if (ret != 2)
124 dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
125
126 return ret == 2 ? 0 : ret;
127 }
128
129 static int stv0299_set_FEC (struct stv0299_state* state, fe_code_rate_t fec)
130 {
131 dprintk ("%s\n", __FUNCTION__);
132
133 switch (fec) {
134 case FEC_AUTO:
135 {
136 return stv0299_writeregI (state, 0x31, 0x1f);
137 }
138 case FEC_1_2:
139 {
140 return stv0299_writeregI (state, 0x31, 0x01);
141 }
142 case FEC_2_3:
143 {
144 return stv0299_writeregI (state, 0x31, 0x02);
145 }
146 case FEC_3_4:
147 {
148 return stv0299_writeregI (state, 0x31, 0x04);
149 }
150 case FEC_5_6:
151 {
152 return stv0299_writeregI (state, 0x31, 0x08);
153 }
154 case FEC_7_8:
155 {
156 return stv0299_writeregI (state, 0x31, 0x10);
157 }
158 default:
159 {
160 return -EINVAL;
161 }
162 }
163 }
164
165 static fe_code_rate_t stv0299_get_fec (struct stv0299_state* state)
166 {
167 static fe_code_rate_t fec_tab [] = { FEC_2_3, FEC_3_4, FEC_5_6,
168 FEC_7_8, FEC_1_2 };
169 u8 index;
170
171 dprintk ("%s\n", __FUNCTION__);
172
173 index = stv0299_readreg (state, 0x1b);
174 index &= 0x7;
175
176 if (index > 4)
177 return FEC_AUTO;
178
179 return fec_tab [index];
180 }
181
182 static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout)
183 {
184 unsigned long start = jiffies;
185
186 dprintk ("%s\n", __FUNCTION__);
187
188 while (stv0299_readreg(state, 0x0a) & 1) {
189 if (jiffies - start > timeout) {
190 dprintk ("%s: timeout!!\n", __FUNCTION__);
191 return -ETIMEDOUT;
192 }
193 msleep(10);
194 };
195
196 return 0;
197 }
198
199 static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout)
200 {
201 unsigned long start = jiffies;
202
203 dprintk ("%s\n", __FUNCTION__);
204
205 while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) {
206 if (jiffies - start > timeout) {
207 dprintk ("%s: timeout!!\n", __FUNCTION__);
208 return -ETIMEDOUT;
209 }
210 msleep(10);
211 };
212
213 return 0;
214 }
215
216 static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate)
217 {
218 struct stv0299_state* state = fe->demodulator_priv;
219 u64 big = srate;
220 u32 ratio;
221
222 // check rate is within limits
223 if ((srate < 1000000) || (srate > 45000000)) return -EINVAL;
224
225 // calculate value to program
226 big = big << 20;
227 big += (state->config->mclk-1); // round correctly
228 do_div(big, state->config->mclk);
229 ratio = big << 4;
230
231 return state->config->set_symbol_rate(fe, srate, ratio);
232 }
233
234 static int stv0299_get_symbolrate (struct stv0299_state* state)
235 {
236 u32 Mclk = state->config->mclk / 4096L;
237 u32 srate;
238 s32 offset;
239 u8 sfr[3];
240 s8 rtf;
241
242 dprintk ("%s\n", __FUNCTION__);
243
244 stv0299_readregs (state, 0x1f, sfr, 3);
245 stv0299_readregs (state, 0x1a, &rtf, 1);
246
247 srate = (sfr[0] << 8) | sfr[1];
248 srate *= Mclk;
249 srate /= 16;
250 srate += (sfr[2] >> 4) * Mclk / 256;
251 offset = (s32) rtf * (srate / 4096L);
252 offset /= 128;
253
254 dprintk ("%s : srate = %i\n", __FUNCTION__, srate);
255 dprintk ("%s : ofset = %i\n", __FUNCTION__, offset);
256
257 srate += offset;
258
259 srate += 1000;
260 srate /= 2000;
261 srate *= 2000;
262
263 return srate;
264 }
265
266 static int stv0299_send_diseqc_msg (struct dvb_frontend* fe,
267 struct dvb_diseqc_master_cmd *m)
268 {
269 struct stv0299_state* state = fe->demodulator_priv;
270 u8 val;
271 int i;
272
273 dprintk ("%s\n", __FUNCTION__);
274
275 if (stv0299_wait_diseqc_idle (state, 100) < 0)
276 return -ETIMEDOUT;
277
278 val = stv0299_readreg (state, 0x08);
279
280 if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x6)) /* DiSEqC mode */
281 return -EREMOTEIO;
282
283 for (i=0; i<m->msg_len; i++) {
284 if (stv0299_wait_diseqc_fifo (state, 100) < 0)
285 return -ETIMEDOUT;
286
287 if (stv0299_writeregI (state, 0x09, m->msg[i]))
288 return -EREMOTEIO;
289 }
290
291 if (stv0299_wait_diseqc_idle (state, 100) < 0)
292 return -ETIMEDOUT;
293
294 return 0;
295 }
296
297 static int stv0299_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
298 {
299 struct stv0299_state* state = fe->demodulator_priv;
300 u8 val;
301
302 dprintk ("%s\n", __FUNCTION__);
303
304 if (stv0299_wait_diseqc_idle (state, 100) < 0)
305 return -ETIMEDOUT;
306
307 val = stv0299_readreg (state, 0x08);
308
309 if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x2)) /* burst mode */
310 return -EREMOTEIO;
311
312 if (stv0299_writeregI (state, 0x09, burst == SEC_MINI_A ? 0x00 : 0xff))
313 return -EREMOTEIO;
314
315 if (stv0299_wait_diseqc_idle (state, 100) < 0)
316 return -ETIMEDOUT;
317
318 if (stv0299_writeregI (state, 0x08, val))
319 return -EREMOTEIO;
320
321 return 0;
322 }
323
324 static int stv0299_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
325 {
326 struct stv0299_state* state = fe->demodulator_priv;
327 u8 val;
328
329 if (stv0299_wait_diseqc_idle (state, 100) < 0)
330 return -ETIMEDOUT;
331
332 val = stv0299_readreg (state, 0x08);
333
334 switch (tone) {
335 case SEC_TONE_ON:
336 return stv0299_writeregI (state, 0x08, val | 0x3);
337
338 case SEC_TONE_OFF:
339 return stv0299_writeregI (state, 0x08, (val & ~0x3) | 0x02);
340
341 default:
342 return -EINVAL;
343 }
344 }
345
346 static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
347 {
348 struct stv0299_state* state = fe->demodulator_priv;
349 u8 reg0x08;
350 u8 reg0x0c;
351
352 dprintk("%s: %s\n", __FUNCTION__,
353 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
354 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
355
356 reg0x08 = stv0299_readreg (state, 0x08);
357 reg0x0c = stv0299_readreg (state, 0x0c);
358
359 /**
360 * H/V switching over OP0, OP1 and OP2 are LNB power enable bits
361 */
362 reg0x0c &= 0x0f;
363
364 if (voltage == SEC_VOLTAGE_OFF) {
365 stv0299_writeregI (state, 0x0c, 0x00); /* LNB power off! */
366 return stv0299_writeregI (state, 0x08, 0x00); /* LNB power off! */
367 }
368
369 stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
370
371 switch (voltage) {
372 case SEC_VOLTAGE_13:
373 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) reg0x0c |= 0x10;
374 else reg0x0c |= 0x40;
375
376 return stv0299_writeregI(state, 0x0c, reg0x0c);
377
378 case SEC_VOLTAGE_18:
379 return stv0299_writeregI(state, 0x0c, reg0x0c | 0x50);
380 default:
381 return -EINVAL;
382 };
383 }
384
385 static inline s32 stv0299_calc_usec_delay (struct timeval lasttime, struct timeval curtime)
386 {
387 return ((curtime.tv_usec < lasttime.tv_usec) ?
388 1000000 - lasttime.tv_usec + curtime.tv_usec :
389 curtime.tv_usec - lasttime.tv_usec);
390 }
391
392 static void stv0299_sleep_until (struct timeval *waketime, u32 add_usec)
393 {
394 struct timeval lasttime;
395 s32 delta, newdelta;
396
397 waketime->tv_usec += add_usec;
398 if (waketime->tv_usec >= 1000000) {
399 waketime->tv_usec -= 1000000;
400 waketime->tv_sec++;
401 }
402
403 do_gettimeofday (&lasttime);
404 delta = stv0299_calc_usec_delay (lasttime, *waketime);
405 if (delta > 2500) {
406 msleep ((delta - 1500) / 1000);
407 do_gettimeofday (&lasttime);
408 newdelta = stv0299_calc_usec_delay (lasttime, *waketime);
409 delta = (newdelta > delta) ? 0 : newdelta;
410 }
411 if (delta > 0)
412 udelay (delta);
413 }
414
415 static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, u32 cmd)
416 {
417 struct stv0299_state* state = fe->demodulator_priv;
418 u8 reg0x08;
419 u8 reg0x0c;
420 u8 lv_mask = 0x40;
421 u8 last = 1;
422 int i;
423 struct timeval nexttime;
424 struct timeval tv[10];
425
426 reg0x08 = stv0299_readreg (state, 0x08);
427 reg0x0c = stv0299_readreg (state, 0x0c);
428 reg0x0c &= 0x0f;
429 stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
430 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
431 lv_mask = 0x10;
432
433 cmd = cmd << 1;
434 if (debug_legacy_dish_switch)
435 printk ("%s switch command: 0x%04x\n",__FUNCTION__, cmd);
436
437 do_gettimeofday (&nexttime);
438 if (debug_legacy_dish_switch)
439 memcpy (&tv[0], &nexttime, sizeof (struct timeval));
440 stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */
441
442 stv0299_sleep_until (&nexttime, 32000);
443
444 for (i=0; i<9; i++) {
445 if (debug_legacy_dish_switch)
446 do_gettimeofday (&tv[i+1]);
447 if((cmd & 0x01) != last) {
448 /* set voltage to (last ? 13V : 18V) */
449 stv0299_writeregI (state, 0x0c, reg0x0c | (last ? lv_mask : 0x50));
450 last = (last) ? 0 : 1;
451 }
452
453 cmd = cmd >> 1;
454
455 if (i != 8)
456 stv0299_sleep_until (&nexttime, 8000);
457 }
458 if (debug_legacy_dish_switch) {
459 printk ("%s(%d): switch delay (should be 32k followed by all 8k\n",
460 __FUNCTION__, fe->dvb->num);
461 for (i=1; i < 10; i++)
462 printk ("%d: %d\n", i, stv0299_calc_usec_delay (tv[i-1] , tv[i]));
463 }
464
465 return 0;
466 }
467
468 static int stv0299_init (struct dvb_frontend* fe)
469 {
470 struct stv0299_state* state = fe->demodulator_priv;
471 int i;
472
473 dprintk("stv0299: init chip\n");
474
475 for (i=0; !(state->config->inittab[i] == 0xff && state->config->inittab[i+1] == 0xff); i+=2)
476 stv0299_writeregI(state, state->config->inittab[i], state->config->inittab[i+1]);
477
478 if (state->config->pll_init) {
479 stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */
480 state->config->pll_init(fe, state->i2c);
481 stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */
482 }
483
484 return 0;
485 }
486
487 static int stv0299_read_status(struct dvb_frontend* fe, fe_status_t* status)
488 {
489 struct stv0299_state* state = fe->demodulator_priv;
490
491 u8 signal = 0xff - stv0299_readreg (state, 0x18);
492 u8 sync = stv0299_readreg (state, 0x1b);
493
494 dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __FUNCTION__, sync);
495 *status = 0;
496
497 if (signal > 10)
498 *status |= FE_HAS_SIGNAL;
499
500 if (sync & 0x80)
501 *status |= FE_HAS_CARRIER;
502
503 if (sync & 0x10)
504 *status |= FE_HAS_VITERBI;
505
506 if (sync & 0x08)
507 *status |= FE_HAS_SYNC;
508
509 if ((sync & 0x98) == 0x98)
510 *status |= FE_HAS_LOCK;
511
512 return 0;
513 }
514
515 static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber)
516 {
517 struct stv0299_state* state = fe->demodulator_priv;
518
519 stv0299_writeregI(state, 0x34, (stv0299_readreg(state, 0x34) & 0xcf) | 0x10);
520 msleep(100);
521 *ber = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
522
523 return 0;
524 }
525
526 static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength)
527 {
528 struct stv0299_state* state = fe->demodulator_priv;
529
530 s32 signal = 0xffff - ((stv0299_readreg (state, 0x18) << 8)
531 | stv0299_readreg (state, 0x19));
532
533 dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n", __FUNCTION__,
534 stv0299_readreg (state, 0x18),
535 stv0299_readreg (state, 0x19), (int) signal);
536
537 signal = signal * 5 / 4;
538 *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
539
540 return 0;
541 }
542
543 static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr)
544 {
545 struct stv0299_state* state = fe->demodulator_priv;
546
547 s32 xsnr = 0xffff - ((stv0299_readreg (state, 0x24) << 8)
548 | stv0299_readreg (state, 0x25));
549 xsnr = 3 * (xsnr - 0xa100);
550 *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
551
552 return 0;
553 }
554
555 static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
556 {
557 struct stv0299_state* state = fe->demodulator_priv;
558
559 stv0299_writeregI(state, 0x34, (stv0299_readreg(state, 0x34) & 0xcf) | 0x30);
560 msleep(100);
561 *ucblocks = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
562
563 return 0;
564 }
565
566 static int stv0299_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
567 {
568 struct stv0299_state* state = fe->demodulator_priv;
569 int invval = 0;
570
571 dprintk ("%s : FE_SET_FRONTEND\n", __FUNCTION__);
572
573 // set the inversion
574 if (p->inversion == INVERSION_OFF) invval = 0;
575 else if (p->inversion == INVERSION_ON) invval = 1;
576 else {
577 printk("stv0299 does not support auto-inversion\n");
578 return -EINVAL;
579 }
580 if (state->config->invert) invval = (~invval) & 1;
581 stv0299_writeregI(state, 0x0c, (stv0299_readreg(state, 0x0c) & 0xfe) | invval);
582
583 if (state->config->enhanced_tuning) {
584 /* check if we should do a finetune */
585 int frequency_delta = p->frequency - state->tuner_frequency;
586 int minmax = p->u.qpsk.symbol_rate / 2000;
587 if (minmax < 5000) minmax = 5000;
588
589 if ((frequency_delta > -minmax) && (frequency_delta < minmax) && (frequency_delta != 0) &&
590 (state->fec_inner == p->u.qpsk.fec_inner) &&
591 (state->symbol_rate == p->u.qpsk.symbol_rate)) {
592 int Drot_freq = (frequency_delta << 16) / (state->config->mclk / 1000);
593
594 // zap the derotator registers first
595 stv0299_writeregI(state, 0x22, 0x00);
596 stv0299_writeregI(state, 0x23, 0x00);
597
598 // now set them as we want
599 stv0299_writeregI(state, 0x22, Drot_freq >> 8);
600 stv0299_writeregI(state, 0x23, Drot_freq);
601 } else {
602 /* A "normal" tune is requested */
603 stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */
604 state->config->pll_set(fe, state->i2c, p);
605 stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */
606
607 stv0299_writeregI(state, 0x32, 0x80);
608 stv0299_writeregI(state, 0x22, 0x00);
609 stv0299_writeregI(state, 0x23, 0x00);
610 stv0299_writeregI(state, 0x32, 0x19);
611 stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate);
612 stv0299_set_FEC (state, p->u.qpsk.fec_inner);
613 }
614 } else {
615 stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */
616 state->config->pll_set(fe, state->i2c, p);
617 stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */
618
619 stv0299_set_FEC (state, p->u.qpsk.fec_inner);
620 stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate);
621 stv0299_writeregI(state, 0x22, 0x00);
622 stv0299_writeregI(state, 0x23, 0x00);
623 stv0299_readreg (state, 0x23);
624 stv0299_writeregI(state, 0x12, 0xb9);
625 }
626
627 state->tuner_frequency = p->frequency;
628 state->fec_inner = p->u.qpsk.fec_inner;
629 state->symbol_rate = p->u.qpsk.symbol_rate;
630
631 return 0;
632 }
633
634 static int stv0299_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
635 {
636 struct stv0299_state* state = fe->demodulator_priv;
637 s32 derot_freq;
638 int invval;
639
640 derot_freq = (s32)(s16) ((stv0299_readreg (state, 0x22) << 8)
641 | stv0299_readreg (state, 0x23));
642
643 derot_freq *= (state->config->mclk >> 16);
644 derot_freq += 500;
645 derot_freq /= 1000;
646
647 p->frequency += derot_freq;
648
649 invval = stv0299_readreg (state, 0x0c) & 1;
650 if (state->config->invert) invval = (~invval) & 1;
651 p->inversion = invval ? INVERSION_ON : INVERSION_OFF;
652
653 p->u.qpsk.fec_inner = stv0299_get_fec (state);
654 p->u.qpsk.symbol_rate = stv0299_get_symbolrate (state);
655
656 return 0;
657 }
658
659 static int stv0299_sleep(struct dvb_frontend* fe)
660 {
661 struct stv0299_state* state = fe->demodulator_priv;
662
663 stv0299_writeregI(state, 0x02, 0x80);
664 state->initialised = 0;
665
666 return 0;
667 }
668
669 static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
670 {
671 struct stv0299_state* state = fe->demodulator_priv;
672
673 fesettings->min_delay_ms = state->config->min_delay_ms;
674 if (fesettings->parameters.u.qpsk.symbol_rate < 10000000) {
675 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 32000;
676 fesettings->max_drift = 5000;
677 } else {
678 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 16000;
679 fesettings->max_drift = fesettings->parameters.u.qpsk.symbol_rate / 2000;
680 }
681 return 0;
682 }
683
684 static void stv0299_release(struct dvb_frontend* fe)
685 {
686 struct stv0299_state* state = fe->demodulator_priv;
687 kfree(state);
688 }
689
690 static struct dvb_frontend_ops stv0299_ops;
691
692 struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
693 struct i2c_adapter* i2c)
694 {
695 struct stv0299_state* state = NULL;
696 int id;
697
698 /* allocate memory for the internal state */
699 state = kmalloc(sizeof(struct stv0299_state), GFP_KERNEL);
700 if (state == NULL) goto error;
701
702 /* setup the state */
703 state->config = config;
704 state->i2c = i2c;
705 memcpy(&state->ops, &stv0299_ops, sizeof(struct dvb_frontend_ops));
706 state->initialised = 0;
707 state->tuner_frequency = 0;
708 state->symbol_rate = 0;
709 state->fec_inner = 0;
710
711 /* check if the demod is there */
712 stv0299_writeregI(state, 0x02, 0x34); /* standby off */
713 msleep(200);
714 id = stv0299_readreg(state, 0x00);
715
716 /* register 0x00 contains 0xa1 for STV0299 and STV0299B */
717 /* register 0x00 might contain 0x80 when returning from standby */
718 if (id != 0xa1 && id != 0x80) goto error;
719
720 /* create dvb_frontend */
721 state->frontend.ops = &state->ops;
722 state->frontend.demodulator_priv = state;
723 return &state->frontend;
724
725 error:
726 kfree(state);
727 return NULL;
728 }
729
730 static struct dvb_frontend_ops stv0299_ops = {
731
732 .info = {
733 .name = "ST STV0299 DVB-S",
734 .type = FE_QPSK,
735 .frequency_min = 950000,
736 .frequency_max = 2150000,
737 .frequency_stepsize = 125, /* kHz for QPSK frontends */
738 .frequency_tolerance = 0,
739 .symbol_rate_min = 1000000,
740 .symbol_rate_max = 45000000,
741 .symbol_rate_tolerance = 500, /* ppm */
742 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
743 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
744 FE_CAN_QPSK |
745 FE_CAN_FEC_AUTO
746 },
747
748 .release = stv0299_release,
749
750 .init = stv0299_init,
751 .sleep = stv0299_sleep,
752
753 .set_frontend = stv0299_set_frontend,
754 .get_frontend = stv0299_get_frontend,
755 .get_tune_settings = stv0299_get_tune_settings,
756
757 .read_status = stv0299_read_status,
758 .read_ber = stv0299_read_ber,
759 .read_signal_strength = stv0299_read_signal_strength,
760 .read_snr = stv0299_read_snr,
761 .read_ucblocks = stv0299_read_ucblocks,
762
763 .diseqc_send_master_cmd = stv0299_send_diseqc_msg,
764 .diseqc_send_burst = stv0299_send_diseqc_burst,
765 .set_tone = stv0299_set_tone,
766 .set_voltage = stv0299_set_voltage,
767 .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd,
768 };
769
770 module_param(debug_legacy_dish_switch, int, 0444);
771 MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches");
772
773 module_param(debug, int, 0644);
774 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
775
776 MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver");
777 MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, "
778 "Andreas Oberritter, Andrew de Quincey, Kenneth Aafløy");
779 MODULE_LICENSE("GPL");
780
781 EXPORT_SYMBOL(stv0299_writereg);
782 EXPORT_SYMBOL(stv0299_attach);