1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * mxl111sf-demod.c - driver for the MaxLinear MXL111SF DVB-T demodulator |
4 | * |
5 | * Copyright (C) 2010-2014 Michael Krufky <mkrufky@linuxtv.org> |
6 | */ |
7 | |
8 | #include "mxl111sf-demod.h" |
9 | #include "mxl111sf-reg.h" |
10 | |
11 | /* debug */ |
12 | static int mxl111sf_demod_debug; |
13 | module_param_named(debug, mxl111sf_demod_debug, int, 0644); |
14 | MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))." ); |
15 | |
16 | #define mxl_dbg(fmt, arg...) \ |
17 | if (mxl111sf_demod_debug) \ |
18 | mxl_printk(KERN_DEBUG, fmt, ##arg) |
19 | |
20 | /* ------------------------------------------------------------------------ */ |
21 | |
22 | struct mxl111sf_demod_state { |
23 | struct mxl111sf_state *mxl_state; |
24 | |
25 | const struct mxl111sf_demod_config *cfg; |
26 | |
27 | struct dvb_frontend fe; |
28 | }; |
29 | |
30 | /* ------------------------------------------------------------------------ */ |
31 | |
32 | static int mxl111sf_demod_read_reg(struct mxl111sf_demod_state *state, |
33 | u8 addr, u8 *data) |
34 | { |
35 | return (state->cfg->read_reg) ? |
36 | state->cfg->read_reg(state->mxl_state, addr, data) : |
37 | -EINVAL; |
38 | } |
39 | |
40 | static int mxl111sf_demod_write_reg(struct mxl111sf_demod_state *state, |
41 | u8 addr, u8 data) |
42 | { |
43 | return (state->cfg->write_reg) ? |
44 | state->cfg->write_reg(state->mxl_state, addr, data) : |
45 | -EINVAL; |
46 | } |
47 | |
48 | static |
49 | int mxl111sf_demod_program_regs(struct mxl111sf_demod_state *state, |
50 | struct mxl111sf_reg_ctrl_info *ctrl_reg_info) |
51 | { |
52 | return (state->cfg->program_regs) ? |
53 | state->cfg->program_regs(state->mxl_state, ctrl_reg_info) : |
54 | -EINVAL; |
55 | } |
56 | |
57 | /* ------------------------------------------------------------------------ */ |
58 | /* TPS */ |
59 | |
60 | static |
61 | int mxl1x1sf_demod_get_tps_code_rate(struct mxl111sf_demod_state *state, |
62 | enum fe_code_rate *code_rate) |
63 | { |
64 | u8 val; |
65 | int ret = mxl111sf_demod_read_reg(state, V6_CODE_RATE_TPS_REG, data: &val); |
66 | /* bit<2:0> - 000:1/2, 001:2/3, 010:3/4, 011:5/6, 100:7/8 */ |
67 | if (mxl_fail(ret)) |
68 | goto fail; |
69 | |
70 | switch (val & V6_CODE_RATE_TPS_MASK) { |
71 | case 0: |
72 | *code_rate = FEC_1_2; |
73 | break; |
74 | case 1: |
75 | *code_rate = FEC_2_3; |
76 | break; |
77 | case 2: |
78 | *code_rate = FEC_3_4; |
79 | break; |
80 | case 3: |
81 | *code_rate = FEC_5_6; |
82 | break; |
83 | case 4: |
84 | *code_rate = FEC_7_8; |
85 | break; |
86 | } |
87 | fail: |
88 | return ret; |
89 | } |
90 | |
91 | static |
92 | int mxl1x1sf_demod_get_tps_modulation(struct mxl111sf_demod_state *state, |
93 | enum fe_modulation *modulation) |
94 | { |
95 | u8 val; |
96 | int ret = mxl111sf_demod_read_reg(state, V6_MODORDER_TPS_REG, data: &val); |
97 | /* Constellation, 00 : QPSK, 01 : 16QAM, 10:64QAM */ |
98 | if (mxl_fail(ret)) |
99 | goto fail; |
100 | |
101 | switch ((val & V6_PARAM_CONSTELLATION_MASK) >> 4) { |
102 | case 0: |
103 | *modulation = QPSK; |
104 | break; |
105 | case 1: |
106 | *modulation = QAM_16; |
107 | break; |
108 | case 2: |
109 | *modulation = QAM_64; |
110 | break; |
111 | } |
112 | fail: |
113 | return ret; |
114 | } |
115 | |
116 | static |
117 | int mxl1x1sf_demod_get_tps_guard_fft_mode(struct mxl111sf_demod_state *state, |
118 | enum fe_transmit_mode *fft_mode) |
119 | { |
120 | u8 val; |
121 | int ret = mxl111sf_demod_read_reg(state, V6_MODE_TPS_REG, data: &val); |
122 | /* FFT Mode, 00:2K, 01:8K, 10:4K */ |
123 | if (mxl_fail(ret)) |
124 | goto fail; |
125 | |
126 | switch ((val & V6_PARAM_FFT_MODE_MASK) >> 2) { |
127 | case 0: |
128 | *fft_mode = TRANSMISSION_MODE_2K; |
129 | break; |
130 | case 1: |
131 | *fft_mode = TRANSMISSION_MODE_8K; |
132 | break; |
133 | case 2: |
134 | *fft_mode = TRANSMISSION_MODE_4K; |
135 | break; |
136 | } |
137 | fail: |
138 | return ret; |
139 | } |
140 | |
141 | static |
142 | int mxl1x1sf_demod_get_tps_guard_interval(struct mxl111sf_demod_state *state, |
143 | enum fe_guard_interval *guard) |
144 | { |
145 | u8 val; |
146 | int ret = mxl111sf_demod_read_reg(state, V6_CP_TPS_REG, data: &val); |
147 | /* 00:1/32, 01:1/16, 10:1/8, 11:1/4 */ |
148 | if (mxl_fail(ret)) |
149 | goto fail; |
150 | |
151 | switch ((val & V6_PARAM_GI_MASK) >> 4) { |
152 | case 0: |
153 | *guard = GUARD_INTERVAL_1_32; |
154 | break; |
155 | case 1: |
156 | *guard = GUARD_INTERVAL_1_16; |
157 | break; |
158 | case 2: |
159 | *guard = GUARD_INTERVAL_1_8; |
160 | break; |
161 | case 3: |
162 | *guard = GUARD_INTERVAL_1_4; |
163 | break; |
164 | } |
165 | fail: |
166 | return ret; |
167 | } |
168 | |
169 | static |
170 | int mxl1x1sf_demod_get_tps_hierarchy(struct mxl111sf_demod_state *state, |
171 | enum fe_hierarchy *hierarchy) |
172 | { |
173 | u8 val; |
174 | int ret = mxl111sf_demod_read_reg(state, V6_TPS_HIERACHY_REG, data: &val); |
175 | /* bit<6:4> - 000:Non hierarchy, 001:1, 010:2, 011:4 */ |
176 | if (mxl_fail(ret)) |
177 | goto fail; |
178 | |
179 | switch ((val & V6_TPS_HIERARCHY_INFO_MASK) >> 6) { |
180 | case 0: |
181 | *hierarchy = HIERARCHY_NONE; |
182 | break; |
183 | case 1: |
184 | *hierarchy = HIERARCHY_1; |
185 | break; |
186 | case 2: |
187 | *hierarchy = HIERARCHY_2; |
188 | break; |
189 | case 3: |
190 | *hierarchy = HIERARCHY_4; |
191 | break; |
192 | } |
193 | fail: |
194 | return ret; |
195 | } |
196 | |
197 | /* ------------------------------------------------------------------------ */ |
198 | /* LOCKS */ |
199 | |
200 | static |
201 | int mxl1x1sf_demod_get_sync_lock_status(struct mxl111sf_demod_state *state, |
202 | int *sync_lock) |
203 | { |
204 | u8 val = 0; |
205 | int ret = mxl111sf_demod_read_reg(state, V6_SYNC_LOCK_REG, data: &val); |
206 | if (mxl_fail(ret)) |
207 | goto fail; |
208 | *sync_lock = (val & SYNC_LOCK_MASK) >> 4; |
209 | fail: |
210 | return ret; |
211 | } |
212 | |
213 | static |
214 | int mxl1x1sf_demod_get_rs_lock_status(struct mxl111sf_demod_state *state, |
215 | int *rs_lock) |
216 | { |
217 | u8 val = 0; |
218 | int ret = mxl111sf_demod_read_reg(state, V6_RS_LOCK_DET_REG, data: &val); |
219 | if (mxl_fail(ret)) |
220 | goto fail; |
221 | *rs_lock = (val & RS_LOCK_DET_MASK) >> 3; |
222 | fail: |
223 | return ret; |
224 | } |
225 | |
226 | static |
227 | int mxl1x1sf_demod_get_tps_lock_status(struct mxl111sf_demod_state *state, |
228 | int *tps_lock) |
229 | { |
230 | u8 val = 0; |
231 | int ret = mxl111sf_demod_read_reg(state, V6_TPS_LOCK_REG, data: &val); |
232 | if (mxl_fail(ret)) |
233 | goto fail; |
234 | *tps_lock = (val & V6_PARAM_TPS_LOCK_MASK) >> 6; |
235 | fail: |
236 | return ret; |
237 | } |
238 | |
239 | static |
240 | int mxl1x1sf_demod_get_fec_lock_status(struct mxl111sf_demod_state *state, |
241 | int *fec_lock) |
242 | { |
243 | u8 val = 0; |
244 | int ret = mxl111sf_demod_read_reg(state, V6_IRQ_STATUS_REG, data: &val); |
245 | if (mxl_fail(ret)) |
246 | goto fail; |
247 | *fec_lock = (val & IRQ_MASK_FEC_LOCK) >> 4; |
248 | fail: |
249 | return ret; |
250 | } |
251 | |
252 | #if 0 |
253 | static |
254 | int mxl1x1sf_demod_get_cp_lock_status(struct mxl111sf_demod_state *state, |
255 | int *cp_lock) |
256 | { |
257 | u8 val = 0; |
258 | int ret = mxl111sf_demod_read_reg(state, V6_CP_LOCK_DET_REG, &val); |
259 | if (mxl_fail(ret)) |
260 | goto fail; |
261 | *cp_lock = (val & V6_CP_LOCK_DET_MASK) >> 2; |
262 | fail: |
263 | return ret; |
264 | } |
265 | #endif |
266 | |
267 | static int mxl1x1sf_demod_reset_irq_status(struct mxl111sf_demod_state *state) |
268 | { |
269 | return mxl111sf_demod_write_reg(state, addr: 0x0e, data: 0xff); |
270 | } |
271 | |
272 | /* ------------------------------------------------------------------------ */ |
273 | |
274 | static int mxl111sf_demod_set_frontend(struct dvb_frontend *fe) |
275 | { |
276 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
277 | int ret = 0; |
278 | |
279 | struct mxl111sf_reg_ctrl_info phy_pll_patch[] = { |
280 | {0x00, 0xff, 0x01}, /* change page to 1 */ |
281 | {0x40, 0xff, 0x05}, |
282 | {0x40, 0xff, 0x01}, |
283 | {0x41, 0xff, 0xca}, |
284 | {0x41, 0xff, 0xc0}, |
285 | {0x00, 0xff, 0x00}, /* change page to 0 */ |
286 | {0, 0, 0} |
287 | }; |
288 | |
289 | mxl_dbg("()" ); |
290 | |
291 | if (fe->ops.tuner_ops.set_params) { |
292 | ret = fe->ops.tuner_ops.set_params(fe); |
293 | if (mxl_fail(ret)) |
294 | goto fail; |
295 | msleep(msecs: 50); |
296 | } |
297 | ret = mxl111sf_demod_program_regs(state, ctrl_reg_info: phy_pll_patch); |
298 | mxl_fail(ret); |
299 | msleep(msecs: 50); |
300 | ret = mxl1x1sf_demod_reset_irq_status(state); |
301 | mxl_fail(ret); |
302 | msleep(msecs: 100); |
303 | fail: |
304 | return ret; |
305 | } |
306 | |
307 | /* ------------------------------------------------------------------------ */ |
308 | |
309 | #if 0 |
310 | /* resets TS Packet error count */ |
311 | /* After setting 7th bit of V5_PER_COUNT_RESET_REG, it should be reset to 0. */ |
312 | static |
313 | int mxl1x1sf_demod_reset_packet_error_count(struct mxl111sf_demod_state *state) |
314 | { |
315 | struct mxl111sf_reg_ctrl_info reset_per_count[] = { |
316 | {0x20, 0x01, 0x01}, |
317 | {0x20, 0x01, 0x00}, |
318 | {0, 0, 0} |
319 | }; |
320 | return mxl111sf_demod_program_regs(state, reset_per_count); |
321 | } |
322 | #endif |
323 | |
324 | /* returns TS Packet error count */ |
325 | /* PER Count = FEC_PER_COUNT * (2 ** (FEC_PER_SCALE * 4)) */ |
326 | static int mxl111sf_demod_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
327 | { |
328 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
329 | u32 fec_per_count, fec_per_scale; |
330 | u8 val; |
331 | int ret; |
332 | |
333 | *ucblocks = 0; |
334 | |
335 | /* FEC_PER_COUNT Register */ |
336 | ret = mxl111sf_demod_read_reg(state, V6_FEC_PER_COUNT_REG, data: &val); |
337 | if (mxl_fail(ret)) |
338 | goto fail; |
339 | |
340 | fec_per_count = val; |
341 | |
342 | /* FEC_PER_SCALE Register */ |
343 | ret = mxl111sf_demod_read_reg(state, V6_FEC_PER_SCALE_REG, data: &val); |
344 | if (mxl_fail(ret)) |
345 | goto fail; |
346 | |
347 | val &= V6_FEC_PER_SCALE_MASK; |
348 | val *= 4; |
349 | |
350 | fec_per_scale = 1 << val; |
351 | |
352 | fec_per_count *= fec_per_scale; |
353 | |
354 | *ucblocks = fec_per_count; |
355 | fail: |
356 | return ret; |
357 | } |
358 | |
359 | #ifdef MXL111SF_DEMOD_ENABLE_CALCULATIONS |
360 | /* FIXME: leaving this enabled breaks the build on some architectures, |
361 | * and we shouldn't have any floating point math in the kernel, anyway. |
362 | * |
363 | * These macros need to be re-written, but it's harmless to simply |
364 | * return zero for now. */ |
365 | #define CALCULATE_BER(avg_errors, count) \ |
366 | ((u32)(avg_errors * 4)/(count*64*188*8)) |
367 | #define CALCULATE_SNR(data) \ |
368 | ((u32)((10 * (u32)data / 64) - 2.5)) |
369 | #else |
370 | #define CALCULATE_BER(avg_errors, count) 0 |
371 | #define CALCULATE_SNR(data) 0 |
372 | #endif |
373 | |
374 | static int mxl111sf_demod_read_ber(struct dvb_frontend *fe, u32 *ber) |
375 | { |
376 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
377 | u8 val1, val2, val3; |
378 | int ret; |
379 | |
380 | *ber = 0; |
381 | |
382 | ret = mxl111sf_demod_read_reg(state, V6_RS_AVG_ERRORS_LSB_REG, data: &val1); |
383 | if (mxl_fail(ret)) |
384 | goto fail; |
385 | ret = mxl111sf_demod_read_reg(state, V6_RS_AVG_ERRORS_MSB_REG, data: &val2); |
386 | if (mxl_fail(ret)) |
387 | goto fail; |
388 | ret = mxl111sf_demod_read_reg(state, V6_N_ACCUMULATE_REG, data: &val3); |
389 | if (mxl_fail(ret)) |
390 | goto fail; |
391 | |
392 | *ber = CALCULATE_BER((val1 | (val2 << 8)), val3); |
393 | fail: |
394 | return ret; |
395 | } |
396 | |
397 | static int mxl111sf_demod_calc_snr(struct mxl111sf_demod_state *state, |
398 | u16 *snr) |
399 | { |
400 | u8 val1, val2; |
401 | int ret; |
402 | |
403 | *snr = 0; |
404 | |
405 | ret = mxl111sf_demod_read_reg(state, V6_SNR_RB_LSB_REG, data: &val1); |
406 | if (mxl_fail(ret)) |
407 | goto fail; |
408 | ret = mxl111sf_demod_read_reg(state, V6_SNR_RB_MSB_REG, data: &val2); |
409 | if (mxl_fail(ret)) |
410 | goto fail; |
411 | |
412 | *snr = CALCULATE_SNR(val1 | ((val2 & 0x03) << 8)); |
413 | fail: |
414 | return ret; |
415 | } |
416 | |
417 | static int mxl111sf_demod_read_snr(struct dvb_frontend *fe, u16 *snr) |
418 | { |
419 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
420 | |
421 | int ret = mxl111sf_demod_calc_snr(state, snr); |
422 | if (mxl_fail(ret)) |
423 | goto fail; |
424 | |
425 | *snr /= 10; /* 0.1 dB */ |
426 | fail: |
427 | return ret; |
428 | } |
429 | |
430 | static int mxl111sf_demod_read_status(struct dvb_frontend *fe, |
431 | enum fe_status *status) |
432 | { |
433 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
434 | int ret, locked, cr_lock, sync_lock, fec_lock; |
435 | |
436 | *status = 0; |
437 | |
438 | ret = mxl1x1sf_demod_get_rs_lock_status(state, rs_lock: &locked); |
439 | if (mxl_fail(ret)) |
440 | goto fail; |
441 | ret = mxl1x1sf_demod_get_tps_lock_status(state, tps_lock: &cr_lock); |
442 | if (mxl_fail(ret)) |
443 | goto fail; |
444 | ret = mxl1x1sf_demod_get_sync_lock_status(state, sync_lock: &sync_lock); |
445 | if (mxl_fail(ret)) |
446 | goto fail; |
447 | ret = mxl1x1sf_demod_get_fec_lock_status(state, fec_lock: &fec_lock); |
448 | if (mxl_fail(ret)) |
449 | goto fail; |
450 | |
451 | if (locked) |
452 | *status |= FE_HAS_SIGNAL; |
453 | if (cr_lock) |
454 | *status |= FE_HAS_CARRIER; |
455 | if (sync_lock) |
456 | *status |= FE_HAS_SYNC; |
457 | if (fec_lock) /* false positives? */ |
458 | *status |= FE_HAS_VITERBI; |
459 | |
460 | if ((locked) && (cr_lock) && (sync_lock)) |
461 | *status |= FE_HAS_LOCK; |
462 | fail: |
463 | return ret; |
464 | } |
465 | |
466 | static int mxl111sf_demod_read_signal_strength(struct dvb_frontend *fe, |
467 | u16 *signal_strength) |
468 | { |
469 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
470 | enum fe_modulation modulation; |
471 | int ret; |
472 | u16 snr; |
473 | |
474 | ret = mxl111sf_demod_calc_snr(state, snr: &snr); |
475 | if (ret < 0) |
476 | return ret; |
477 | ret = mxl1x1sf_demod_get_tps_modulation(state, modulation: &modulation); |
478 | if (ret < 0) |
479 | return ret; |
480 | |
481 | switch (modulation) { |
482 | case QPSK: |
483 | *signal_strength = (snr >= 1300) ? |
484 | min(65535, snr * 44) : snr * 38; |
485 | break; |
486 | case QAM_16: |
487 | *signal_strength = (snr >= 1500) ? |
488 | min(65535, snr * 38) : snr * 33; |
489 | break; |
490 | case QAM_64: |
491 | *signal_strength = (snr >= 2000) ? |
492 | min(65535, snr * 29) : snr * 25; |
493 | break; |
494 | default: |
495 | *signal_strength = 0; |
496 | return -EINVAL; |
497 | } |
498 | |
499 | return 0; |
500 | } |
501 | |
502 | static int mxl111sf_demod_get_frontend(struct dvb_frontend *fe, |
503 | struct dtv_frontend_properties *p) |
504 | { |
505 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
506 | |
507 | mxl_dbg("()" ); |
508 | #if 0 |
509 | p->inversion = /* FIXME */ ? INVERSION_ON : INVERSION_OFF; |
510 | #endif |
511 | if (fe->ops.tuner_ops.get_bandwidth) |
512 | fe->ops.tuner_ops.get_bandwidth(fe, &p->bandwidth_hz); |
513 | if (fe->ops.tuner_ops.get_frequency) |
514 | fe->ops.tuner_ops.get_frequency(fe, &p->frequency); |
515 | mxl1x1sf_demod_get_tps_code_rate(state, code_rate: &p->code_rate_HP); |
516 | mxl1x1sf_demod_get_tps_code_rate(state, code_rate: &p->code_rate_LP); |
517 | mxl1x1sf_demod_get_tps_modulation(state, modulation: &p->modulation); |
518 | mxl1x1sf_demod_get_tps_guard_fft_mode(state, |
519 | fft_mode: &p->transmission_mode); |
520 | mxl1x1sf_demod_get_tps_guard_interval(state, |
521 | guard: &p->guard_interval); |
522 | mxl1x1sf_demod_get_tps_hierarchy(state, |
523 | hierarchy: &p->hierarchy); |
524 | |
525 | return 0; |
526 | } |
527 | |
528 | static |
529 | int mxl111sf_demod_get_tune_settings(struct dvb_frontend *fe, |
530 | struct dvb_frontend_tune_settings *tune) |
531 | { |
532 | tune->min_delay_ms = 1000; |
533 | return 0; |
534 | } |
535 | |
536 | static void mxl111sf_demod_release(struct dvb_frontend *fe) |
537 | { |
538 | struct mxl111sf_demod_state *state = fe->demodulator_priv; |
539 | mxl_dbg("()" ); |
540 | kfree(objp: state); |
541 | fe->demodulator_priv = NULL; |
542 | } |
543 | |
544 | static const struct dvb_frontend_ops mxl111sf_demod_ops = { |
545 | .delsys = { SYS_DVBT }, |
546 | .info = { |
547 | .name = "MaxLinear MxL111SF DVB-T demodulator" , |
548 | .frequency_min_hz = 177 * MHz, |
549 | .frequency_max_hz = 858 * MHz, |
550 | .frequency_stepsize_hz = 166666, |
551 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
552 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
553 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | |
554 | FE_CAN_QAM_AUTO | |
555 | FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | |
556 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER |
557 | }, |
558 | .release = mxl111sf_demod_release, |
559 | #if 0 |
560 | .init = mxl111sf_init, |
561 | .i2c_gate_ctrl = mxl111sf_i2c_gate_ctrl, |
562 | #endif |
563 | .set_frontend = mxl111sf_demod_set_frontend, |
564 | .get_frontend = mxl111sf_demod_get_frontend, |
565 | .get_tune_settings = mxl111sf_demod_get_tune_settings, |
566 | .read_status = mxl111sf_demod_read_status, |
567 | .read_signal_strength = mxl111sf_demod_read_signal_strength, |
568 | .read_ber = mxl111sf_demod_read_ber, |
569 | .read_snr = mxl111sf_demod_read_snr, |
570 | .read_ucblocks = mxl111sf_demod_read_ucblocks, |
571 | }; |
572 | |
573 | struct dvb_frontend *mxl111sf_demod_attach(struct mxl111sf_state *mxl_state, |
574 | const struct mxl111sf_demod_config *cfg) |
575 | { |
576 | struct mxl111sf_demod_state *state = NULL; |
577 | |
578 | mxl_dbg("()" ); |
579 | |
580 | state = kzalloc(size: sizeof(struct mxl111sf_demod_state), GFP_KERNEL); |
581 | if (state == NULL) |
582 | return NULL; |
583 | |
584 | state->mxl_state = mxl_state; |
585 | state->cfg = cfg; |
586 | |
587 | memcpy(&state->fe.ops, &mxl111sf_demod_ops, |
588 | sizeof(struct dvb_frontend_ops)); |
589 | |
590 | state->fe.demodulator_priv = state; |
591 | return &state->fe; |
592 | } |
593 | EXPORT_SYMBOL_GPL(mxl111sf_demod_attach); |
594 | |
595 | MODULE_DESCRIPTION("MaxLinear MxL111SF DVB-T demodulator driver" ); |
596 | MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>" ); |
597 | MODULE_LICENSE("GPL" ); |
598 | MODULE_VERSION("0.1" ); |
599 | |