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1da177e4 LT |
1 | /* |
2 | * Driver for Zarlink DVB-T MT352 demodulator | |
3 | * | |
4 | * Written by Holger Waechtler <holger@qanu.de> | |
5 | * and Daniel Mack <daniel@qanu.de> | |
6 | * | |
7 | * AVerMedia AVerTV DVB-T 771 support by | |
8 | * Wolfram Joost <dbox2@frokaschwei.de> | |
9 | * | |
10 | * Support for Samsung TDTC9251DH01C(M) tuner | |
11 | * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it> | |
12 | * Amauri Celani <acelani@essegi.net> | |
13 | * | |
14 | * DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by | |
15 | * Christopher Pascoe <c.pascoe@itee.uq.edu.au> | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2 of the License, or | |
20 | * (at your option) any later version. | |
21 | * | |
22 | * This program is distributed in the hope that it will be useful, | |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.= | |
31 | */ | |
32 | ||
33 | #include <linux/kernel.h> | |
34 | #include <linux/module.h> | |
1da177e4 LT |
35 | #include <linux/init.h> |
36 | #include <linux/delay.h> | |
4e57b681 TS |
37 | #include <linux/string.h> |
38 | #include <linux/slab.h> | |
1da177e4 LT |
39 | |
40 | #include "dvb_frontend.h" | |
41 | #include "mt352_priv.h" | |
42 | #include "mt352.h" | |
43 | ||
44 | struct mt352_state { | |
45 | struct i2c_adapter* i2c; | |
46 | struct dvb_frontend frontend; | |
1da177e4 LT |
47 | |
48 | /* configuration settings */ | |
77b3bd0c | 49 | struct mt352_config config; |
1da177e4 LT |
50 | }; |
51 | ||
52 | static int debug; | |
53 | #define dprintk(args...) \ | |
54 | do { \ | |
55 | if (debug) printk(KERN_DEBUG "mt352: " args); \ | |
56 | } while (0) | |
57 | ||
58 | static int mt352_single_write(struct dvb_frontend *fe, u8 reg, u8 val) | |
59 | { | |
60 | struct mt352_state* state = fe->demodulator_priv; | |
61 | u8 buf[2] = { reg, val }; | |
77b3bd0c | 62 | struct i2c_msg msg = { .addr = state->config.demod_address, .flags = 0, |
1da177e4 LT |
63 | .buf = buf, .len = 2 }; |
64 | int err = i2c_transfer(state->i2c, &msg, 1); | |
65 | if (err != 1) { | |
66 | printk("mt352_write() to reg %x failed (err = %d)!\n", reg, err); | |
67 | return err; | |
68 | } | |
69 | return 0; | |
70 | } | |
71 | ||
2e4e98e7 | 72 | static int _mt352_write(struct dvb_frontend* fe, const u8 ibuf[], int ilen) |
1da177e4 LT |
73 | { |
74 | int err,i; | |
75 | for (i=0; i < ilen-1; i++) | |
76 | if ((err = mt352_single_write(fe,ibuf[0]+i,ibuf[i+1]))) | |
77 | return err; | |
78 | ||
79 | return 0; | |
80 | } | |
81 | ||
82 | static int mt352_read_register(struct mt352_state* state, u8 reg) | |
83 | { | |
84 | int ret; | |
85 | u8 b0 [] = { reg }; | |
86 | u8 b1 [] = { 0 }; | |
77b3bd0c | 87 | struct i2c_msg msg [] = { { .addr = state->config.demod_address, |
1da177e4 LT |
88 | .flags = 0, |
89 | .buf = b0, .len = 1 }, | |
77b3bd0c | 90 | { .addr = state->config.demod_address, |
1da177e4 LT |
91 | .flags = I2C_M_RD, |
92 | .buf = b1, .len = 1 } }; | |
93 | ||
94 | ret = i2c_transfer(state->i2c, msg, 2); | |
95 | ||
96 | if (ret != 2) { | |
97 | printk("%s: readreg error (reg=%d, ret==%i)\n", | |
271ddbf7 | 98 | __func__, reg, ret); |
1da177e4 LT |
99 | return ret; |
100 | } | |
101 | ||
102 | return b1[0]; | |
103 | } | |
104 | ||
1da177e4 LT |
105 | static int mt352_sleep(struct dvb_frontend* fe) |
106 | { | |
107 | static u8 mt352_softdown[] = { CLOCK_CTL, 0x20, 0x08 }; | |
108 | ||
c10d14d6 | 109 | _mt352_write(fe, mt352_softdown, sizeof(mt352_softdown)); |
1da177e4 LT |
110 | return 0; |
111 | } | |
112 | ||
113 | static void mt352_calc_nominal_rate(struct mt352_state* state, | |
cf45787c | 114 | u32 bandwidth, |
1da177e4 LT |
115 | unsigned char *buf) |
116 | { | |
117 | u32 adc_clock = 20480; /* 20.340 MHz */ | |
118 | u32 bw,value; | |
119 | ||
120 | switch (bandwidth) { | |
cf45787c | 121 | case 6000000: |
1da177e4 LT |
122 | bw = 6; |
123 | break; | |
cf45787c | 124 | case 7000000: |
1da177e4 LT |
125 | bw = 7; |
126 | break; | |
cf45787c | 127 | case 8000000: |
1da177e4 LT |
128 | default: |
129 | bw = 8; | |
130 | break; | |
131 | } | |
77b3bd0c JS |
132 | if (state->config.adc_clock) |
133 | adc_clock = state->config.adc_clock; | |
1da177e4 LT |
134 | |
135 | value = 64 * bw * (1<<16) / (7 * 8); | |
136 | value = value * 1000 / adc_clock; | |
137 | dprintk("%s: bw %d, adc_clock %d => 0x%x\n", | |
271ddbf7 | 138 | __func__, bw, adc_clock, value); |
1da177e4 LT |
139 | buf[0] = msb(value); |
140 | buf[1] = lsb(value); | |
141 | } | |
142 | ||
143 | static void mt352_calc_input_freq(struct mt352_state* state, | |
144 | unsigned char *buf) | |
145 | { | |
146 | int adc_clock = 20480; /* 20.480000 MHz */ | |
147 | int if2 = 36167; /* 36.166667 MHz */ | |
148 | int ife,value; | |
149 | ||
77b3bd0c JS |
150 | if (state->config.adc_clock) |
151 | adc_clock = state->config.adc_clock; | |
152 | if (state->config.if2) | |
153 | if2 = state->config.if2; | |
1da177e4 | 154 | |
c6e62a3a CP |
155 | if (adc_clock >= if2 * 2) |
156 | ife = if2; | |
157 | else { | |
158 | ife = adc_clock - (if2 % adc_clock); | |
159 | if (ife > adc_clock / 2) | |
160 | ife = adc_clock - ife; | |
161 | } | |
1da177e4 LT |
162 | value = -16374 * ife / adc_clock; |
163 | dprintk("%s: if2 %d, ife %d, adc_clock %d => %d / 0x%x\n", | |
271ddbf7 | 164 | __func__, if2, ife, adc_clock, value, value & 0x3fff); |
1da177e4 LT |
165 | buf[0] = msb(value); |
166 | buf[1] = lsb(value); | |
167 | } | |
168 | ||
cf45787c | 169 | static int mt352_set_parameters(struct dvb_frontend *fe) |
1da177e4 | 170 | { |
cf45787c | 171 | struct dtv_frontend_properties *op = &fe->dtv_property_cache; |
1da177e4 LT |
172 | struct mt352_state* state = fe->demodulator_priv; |
173 | unsigned char buf[13]; | |
174 | static unsigned char tuner_go[] = { 0x5d, 0x01 }; | |
175 | static unsigned char fsm_go[] = { 0x5e, 0x01 }; | |
176 | unsigned int tps = 0; | |
1da177e4 LT |
177 | |
178 | switch (op->code_rate_HP) { | |
179 | case FEC_2_3: | |
180 | tps |= (1 << 7); | |
181 | break; | |
182 | case FEC_3_4: | |
183 | tps |= (2 << 7); | |
184 | break; | |
185 | case FEC_5_6: | |
186 | tps |= (3 << 7); | |
187 | break; | |
188 | case FEC_7_8: | |
189 | tps |= (4 << 7); | |
190 | break; | |
191 | case FEC_1_2: | |
192 | case FEC_AUTO: | |
193 | break; | |
194 | default: | |
195 | return -EINVAL; | |
196 | } | |
197 | ||
198 | switch (op->code_rate_LP) { | |
199 | case FEC_2_3: | |
200 | tps |= (1 << 4); | |
201 | break; | |
202 | case FEC_3_4: | |
203 | tps |= (2 << 4); | |
204 | break; | |
205 | case FEC_5_6: | |
206 | tps |= (3 << 4); | |
207 | break; | |
208 | case FEC_7_8: | |
209 | tps |= (4 << 4); | |
210 | break; | |
211 | case FEC_1_2: | |
212 | case FEC_AUTO: | |
213 | break; | |
214 | case FEC_NONE: | |
cf45787c MCC |
215 | if (op->hierarchy == HIERARCHY_AUTO || |
216 | op->hierarchy == HIERARCHY_NONE) | |
1da177e4 LT |
217 | break; |
218 | default: | |
219 | return -EINVAL; | |
220 | } | |
221 | ||
cf45787c | 222 | switch (op->modulation) { |
1da177e4 LT |
223 | case QPSK: |
224 | break; | |
225 | case QAM_AUTO: | |
226 | case QAM_16: | |
227 | tps |= (1 << 13); | |
228 | break; | |
229 | case QAM_64: | |
230 | tps |= (2 << 13); | |
231 | break; | |
232 | default: | |
233 | return -EINVAL; | |
234 | } | |
235 | ||
236 | switch (op->transmission_mode) { | |
237 | case TRANSMISSION_MODE_2K: | |
238 | case TRANSMISSION_MODE_AUTO: | |
239 | break; | |
240 | case TRANSMISSION_MODE_8K: | |
241 | tps |= (1 << 0); | |
242 | break; | |
243 | default: | |
244 | return -EINVAL; | |
245 | } | |
246 | ||
247 | switch (op->guard_interval) { | |
248 | case GUARD_INTERVAL_1_32: | |
249 | case GUARD_INTERVAL_AUTO: | |
250 | break; | |
251 | case GUARD_INTERVAL_1_16: | |
252 | tps |= (1 << 2); | |
253 | break; | |
254 | case GUARD_INTERVAL_1_8: | |
255 | tps |= (2 << 2); | |
256 | break; | |
257 | case GUARD_INTERVAL_1_4: | |
258 | tps |= (3 << 2); | |
259 | break; | |
260 | default: | |
261 | return -EINVAL; | |
262 | } | |
263 | ||
cf45787c | 264 | switch (op->hierarchy) { |
1da177e4 LT |
265 | case HIERARCHY_AUTO: |
266 | case HIERARCHY_NONE: | |
267 | break; | |
268 | case HIERARCHY_1: | |
269 | tps |= (1 << 10); | |
270 | break; | |
271 | case HIERARCHY_2: | |
272 | tps |= (2 << 10); | |
273 | break; | |
274 | case HIERARCHY_4: | |
275 | tps |= (3 << 10); | |
276 | break; | |
277 | default: | |
278 | return -EINVAL; | |
279 | } | |
280 | ||
281 | ||
282 | buf[0] = TPS_GIVEN_1; /* TPS_GIVEN_1 and following registers */ | |
283 | ||
284 | buf[1] = msb(tps); /* TPS_GIVEN_(1|0) */ | |
285 | buf[2] = lsb(tps); | |
286 | ||
287 | buf[3] = 0x50; // old | |
288 | // buf[3] = 0xf4; // pinnacle | |
289 | ||
cf45787c | 290 | mt352_calc_nominal_rate(state, op->bandwidth_hz, buf+4); |
1da177e4 | 291 | mt352_calc_input_freq(state, buf+6); |
1da177e4 | 292 | |
4e2eccae | 293 | if (state->config.no_tuner) { |
dea74869 | 294 | if (fe->ops.tuner_ops.set_params) { |
14d24d14 | 295 | fe->ops.tuner_ops.set_params(fe); |
dea74869 PB |
296 | if (fe->ops.i2c_gate_ctrl) |
297 | fe->ops.i2c_gate_ctrl(fe, 0); | |
4e2eccae AQ |
298 | } |
299 | ||
c10d14d6 AQ |
300 | _mt352_write(fe, buf, 8); |
301 | _mt352_write(fe, fsm_go, 2); | |
0463f12c | 302 | } else { |
dea74869 | 303 | if (fe->ops.tuner_ops.calc_regs) { |
249fa0b0 | 304 | fe->ops.tuner_ops.calc_regs(fe, buf+8, 5); |
0463f12c | 305 | buf[8] <<= 1; |
c10d14d6 AQ |
306 | _mt352_write(fe, buf, sizeof(buf)); |
307 | _mt352_write(fe, tuner_go, 2); | |
0463f12c | 308 | } |
1da177e4 | 309 | } |
4e2eccae | 310 | |
1da177e4 LT |
311 | return 0; |
312 | } | |
313 | ||
7e3e68bc MCC |
314 | static int mt352_get_parameters(struct dvb_frontend* fe, |
315 | struct dtv_frontend_properties *op) | |
1da177e4 LT |
316 | { |
317 | struct mt352_state* state = fe->demodulator_priv; | |
318 | u16 tps; | |
319 | u16 div; | |
320 | u8 trl; | |
1da177e4 LT |
321 | static const u8 tps_fec_to_api[8] = |
322 | { | |
323 | FEC_1_2, | |
324 | FEC_2_3, | |
325 | FEC_3_4, | |
326 | FEC_5_6, | |
327 | FEC_7_8, | |
328 | FEC_AUTO, | |
329 | FEC_AUTO, | |
330 | FEC_AUTO | |
331 | }; | |
332 | ||
333 | if ( (mt352_read_register(state,0x00) & 0xC0) != 0xC0 ) | |
334 | return -EINVAL; | |
335 | ||
336 | /* Use TPS_RECEIVED-registers, not the TPS_CURRENT-registers because | |
337 | * the mt352 sometimes works with the wrong parameters | |
338 | */ | |
339 | tps = (mt352_read_register(state, TPS_RECEIVED_1) << 8) | mt352_read_register(state, TPS_RECEIVED_0); | |
340 | div = (mt352_read_register(state, CHAN_START_1) << 8) | mt352_read_register(state, CHAN_START_0); | |
341 | trl = mt352_read_register(state, TRL_NOMINAL_RATE_1); | |
342 | ||
343 | op->code_rate_HP = tps_fec_to_api[(tps >> 7) & 7]; | |
344 | op->code_rate_LP = tps_fec_to_api[(tps >> 4) & 7]; | |
345 | ||
346 | switch ( (tps >> 13) & 3) | |
347 | { | |
348 | case 0: | |
cf45787c | 349 | op->modulation = QPSK; |
1da177e4 LT |
350 | break; |
351 | case 1: | |
cf45787c | 352 | op->modulation = QAM_16; |
1da177e4 LT |
353 | break; |
354 | case 2: | |
cf45787c | 355 | op->modulation = QAM_64; |
1da177e4 LT |
356 | break; |
357 | default: | |
cf45787c | 358 | op->modulation = QAM_AUTO; |
1da177e4 LT |
359 | break; |
360 | } | |
361 | ||
362 | op->transmission_mode = (tps & 0x01) ? TRANSMISSION_MODE_8K : TRANSMISSION_MODE_2K; | |
363 | ||
364 | switch ( (tps >> 2) & 3) | |
365 | { | |
366 | case 0: | |
367 | op->guard_interval = GUARD_INTERVAL_1_32; | |
368 | break; | |
369 | case 1: | |
370 | op->guard_interval = GUARD_INTERVAL_1_16; | |
371 | break; | |
372 | case 2: | |
373 | op->guard_interval = GUARD_INTERVAL_1_8; | |
374 | break; | |
375 | case 3: | |
376 | op->guard_interval = GUARD_INTERVAL_1_4; | |
377 | break; | |
378 | default: | |
379 | op->guard_interval = GUARD_INTERVAL_AUTO; | |
380 | break; | |
381 | } | |
382 | ||
383 | switch ( (tps >> 10) & 7) | |
384 | { | |
385 | case 0: | |
cf45787c | 386 | op->hierarchy = HIERARCHY_NONE; |
1da177e4 LT |
387 | break; |
388 | case 1: | |
cf45787c | 389 | op->hierarchy = HIERARCHY_1; |
1da177e4 LT |
390 | break; |
391 | case 2: | |
cf45787c | 392 | op->hierarchy = HIERARCHY_2; |
1da177e4 LT |
393 | break; |
394 | case 3: | |
cf45787c | 395 | op->hierarchy = HIERARCHY_4; |
1da177e4 LT |
396 | break; |
397 | default: | |
cf45787c | 398 | op->hierarchy = HIERARCHY_AUTO; |
1da177e4 LT |
399 | break; |
400 | } | |
401 | ||
cf45787c | 402 | op->frequency = (500 * (div - IF_FREQUENCYx6)) / 3 * 1000; |
1da177e4 LT |
403 | |
404 | if (trl == 0x72) | |
cf45787c | 405 | op->bandwidth_hz = 8000000; |
1da177e4 | 406 | else if (trl == 0x64) |
cf45787c | 407 | op->bandwidth_hz = 7000000; |
1da177e4 | 408 | else |
cf45787c | 409 | op->bandwidth_hz = 6000000; |
1da177e4 LT |
410 | |
411 | ||
412 | if (mt352_read_register(state, STATUS_2) & 0x02) | |
cf45787c | 413 | op->inversion = INVERSION_OFF; |
1da177e4 | 414 | else |
cf45787c | 415 | op->inversion = INVERSION_ON; |
1da177e4 LT |
416 | |
417 | return 0; | |
418 | } | |
419 | ||
0df289a2 | 420 | static int mt352_read_status(struct dvb_frontend *fe, enum fe_status *status) |
1da177e4 LT |
421 | { |
422 | struct mt352_state* state = fe->demodulator_priv; | |
423 | int s0, s1, s3; | |
424 | ||
425 | /* FIXME: | |
426 | * | |
427 | * The MT352 design manual from Zarlink states (page 46-47): | |
428 | * | |
429 | * Notes about the TUNER_GO register: | |
430 | * | |
431 | * If the Read_Tuner_Byte (bit-1) is activated, then the tuner status | |
432 | * byte is copied from the tuner to the STATUS_3 register and | |
433 | * completion of the read operation is indicated by bit-5 of the | |
434 | * INTERRUPT_3 register. | |
435 | */ | |
436 | ||
437 | if ((s0 = mt352_read_register(state, STATUS_0)) < 0) | |
438 | return -EREMOTEIO; | |
439 | if ((s1 = mt352_read_register(state, STATUS_1)) < 0) | |
440 | return -EREMOTEIO; | |
441 | if ((s3 = mt352_read_register(state, STATUS_3)) < 0) | |
442 | return -EREMOTEIO; | |
443 | ||
444 | *status = 0; | |
445 | if (s0 & (1 << 4)) | |
446 | *status |= FE_HAS_CARRIER; | |
447 | if (s0 & (1 << 1)) | |
448 | *status |= FE_HAS_VITERBI; | |
449 | if (s0 & (1 << 5)) | |
450 | *status |= FE_HAS_LOCK; | |
451 | if (s1 & (1 << 1)) | |
452 | *status |= FE_HAS_SYNC; | |
453 | if (s3 & (1 << 6)) | |
454 | *status |= FE_HAS_SIGNAL; | |
455 | ||
456 | if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) != | |
457 | (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) | |
458 | *status &= ~FE_HAS_LOCK; | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | static int mt352_read_ber(struct dvb_frontend* fe, u32* ber) | |
464 | { | |
465 | struct mt352_state* state = fe->demodulator_priv; | |
466 | ||
467 | *ber = (mt352_read_register (state, RS_ERR_CNT_2) << 16) | | |
468 | (mt352_read_register (state, RS_ERR_CNT_1) << 8) | | |
469 | (mt352_read_register (state, RS_ERR_CNT_0)); | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
474 | static int mt352_read_signal_strength(struct dvb_frontend* fe, u16* strength) | |
475 | { | |
476 | struct mt352_state* state = fe->demodulator_priv; | |
477 | ||
4ff4ac1b BS |
478 | /* align the 12 bit AGC gain with the most significant bits */ |
479 | u16 signal = ((mt352_read_register(state, AGC_GAIN_1) & 0x0f) << 12) | | |
480 | (mt352_read_register(state, AGC_GAIN_0) << 4); | |
1da177e4 | 481 | |
4ff4ac1b | 482 | /* inverse of gain is signal strength */ |
1da177e4 LT |
483 | *strength = ~signal; |
484 | return 0; | |
485 | } | |
486 | ||
487 | static int mt352_read_snr(struct dvb_frontend* fe, u16* snr) | |
488 | { | |
489 | struct mt352_state* state = fe->demodulator_priv; | |
490 | ||
491 | u8 _snr = mt352_read_register (state, SNR); | |
492 | *snr = (_snr << 8) | _snr; | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | static int mt352_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) | |
498 | { | |
499 | struct mt352_state* state = fe->demodulator_priv; | |
500 | ||
501 | *ucblocks = (mt352_read_register (state, RS_UBC_1) << 8) | | |
502 | (mt352_read_register (state, RS_UBC_0)); | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | static int mt352_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings) | |
508 | { | |
509 | fe_tune_settings->min_delay_ms = 800; | |
510 | fe_tune_settings->step_size = 0; | |
511 | fe_tune_settings->max_drift = 0; | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
516 | static int mt352_init(struct dvb_frontend* fe) | |
517 | { | |
518 | struct mt352_state* state = fe->demodulator_priv; | |
519 | ||
520 | static u8 mt352_reset_attach [] = { RESET, 0xC0 }; | |
521 | ||
271ddbf7 | 522 | dprintk("%s: hello\n",__func__); |
1da177e4 LT |
523 | |
524 | if ((mt352_read_register(state, CLOCK_CTL) & 0x10) == 0 || | |
525 | (mt352_read_register(state, CONFIG) & 0x20) == 0) { | |
526 | ||
527 | /* Do a "hard" reset */ | |
c10d14d6 | 528 | _mt352_write(fe, mt352_reset_attach, sizeof(mt352_reset_attach)); |
77b3bd0c | 529 | return state->config.demod_init(fe); |
1da177e4 LT |
530 | } |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | static void mt352_release(struct dvb_frontend* fe) | |
536 | { | |
537 | struct mt352_state* state = fe->demodulator_priv; | |
538 | kfree(state); | |
539 | } | |
540 | ||
541 | static struct dvb_frontend_ops mt352_ops; | |
542 | ||
543 | struct dvb_frontend* mt352_attach(const struct mt352_config* config, | |
544 | struct i2c_adapter* i2c) | |
545 | { | |
546 | struct mt352_state* state = NULL; | |
547 | ||
548 | /* allocate memory for the internal state */ | |
7408187d | 549 | state = kzalloc(sizeof(struct mt352_state), GFP_KERNEL); |
1da177e4 | 550 | if (state == NULL) goto error; |
1da177e4 LT |
551 | |
552 | /* setup the state */ | |
1da177e4 | 553 | state->i2c = i2c; |
77b3bd0c | 554 | memcpy(&state->config,config,sizeof(struct mt352_config)); |
1da177e4 LT |
555 | |
556 | /* check if the demod is there */ | |
557 | if (mt352_read_register(state, CHIP_ID) != ID_MT352) goto error; | |
558 | ||
559 | /* create dvb_frontend */ | |
dea74869 | 560 | memcpy(&state->frontend.ops, &mt352_ops, sizeof(struct dvb_frontend_ops)); |
1da177e4 LT |
561 | state->frontend.demodulator_priv = state; |
562 | return &state->frontend; | |
563 | ||
564 | error: | |
565 | kfree(state); | |
566 | return NULL; | |
567 | } | |
568 | ||
569 | static struct dvb_frontend_ops mt352_ops = { | |
cf45787c | 570 | .delsys = { SYS_DVBT }, |
1da177e4 LT |
571 | .info = { |
572 | .name = "Zarlink MT352 DVB-T", | |
1da177e4 LT |
573 | .frequency_min = 174000000, |
574 | .frequency_max = 862000000, | |
575 | .frequency_stepsize = 166667, | |
576 | .frequency_tolerance = 0, | |
577 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | | |
578 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | | |
579 | FE_CAN_FEC_AUTO | | |
580 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | | |
581 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | | |
582 | FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | | |
583 | FE_CAN_MUTE_TS | |
584 | }, | |
585 | ||
586 | .release = mt352_release, | |
587 | ||
588 | .init = mt352_init, | |
589 | .sleep = mt352_sleep, | |
c10d14d6 | 590 | .write = _mt352_write, |
1da177e4 | 591 | |
cf45787c MCC |
592 | .set_frontend = mt352_set_parameters, |
593 | .get_frontend = mt352_get_parameters, | |
1da177e4 LT |
594 | .get_tune_settings = mt352_get_tune_settings, |
595 | ||
596 | .read_status = mt352_read_status, | |
597 | .read_ber = mt352_read_ber, | |
598 | .read_signal_strength = mt352_read_signal_strength, | |
599 | .read_snr = mt352_read_snr, | |
600 | .read_ucblocks = mt352_read_ucblocks, | |
601 | }; | |
602 | ||
603 | module_param(debug, int, 0644); | |
604 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); | |
605 | ||
606 | MODULE_DESCRIPTION("Zarlink MT352 DVB-T Demodulator driver"); | |
607 | MODULE_AUTHOR("Holger Waechtler, Daniel Mack, Antonio Mancuso"); | |
608 | MODULE_LICENSE("GPL"); | |
609 | ||
610 | EXPORT_SYMBOL(mt352_attach); |