1 /*
2 * Frontend driver for mobile DVB-T demodulator DiBcom 3000M-B
3 * DiBcom (http://www.dibcom.fr/)
4 *
5 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
6 *
7 * based on GPL code from DibCom, which has
8 *
9 * Copyright (C) 2004 Amaury Demol for DiBcom (ademol@dibcom.fr)
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, version 2.
14 *
15 * Acknowledgements
16 *
17 * Amaury Demol (ademol@dibcom.fr) from DiBcom for providing specs and driver
18 * sources, on which this driver (and the dvb-dibusb) are based.
19 *
20 * see Documentation/dvb/README.dibusb for more information
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/string.h>
29 #include <linux/slab.h>
30
31 #include "dvb_frontend.h"
32
33 #include "dib3000.h"
34 #include "dib3000mb_priv.h"
35
36 /* Version information */
37 #define DRIVER_VERSION "0.1"
38 #define DRIVER_DESC "DiBcom 3000M-B DVB-T demodulator"
39 #define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@desy.de"
40
41 #ifdef CONFIG_DVB_DIBCOM_DEBUG
42 static int debug;
43 module_param(debug, int, 0644);
44 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=xfer,4=setfe,8=getfe (|-able)).");
45 #endif
46 #define deb_info(args...) dprintk(0x01,args)
47 #define deb_i2c(args...) dprintk(0x02,args)
48 #define deb_srch(args...) dprintk(0x04,args)
49 #define deb_info(args...) dprintk(0x01,args)
50 #define deb_xfer(args...) dprintk(0x02,args)
51 #define deb_setf(args...) dprintk(0x04,args)
52 #define deb_getf(args...) dprintk(0x08,args)
53
54 #ifdef CONFIG_DVB_DIBCOM_DEBUG
55 static int debug;
56 module_param(debug, int, 0644);
57 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=i2c,4=srch (|-able)).");
58 #endif
59
dib3000_read_reg(struct dib3000_state * state,u16 reg)60 static int dib3000_read_reg(struct dib3000_state *state, u16 reg)
61 {
62 u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
63 u8 rb[2];
64 struct i2c_msg msg[] = {
65 { .addr = state->config.demod_address, .flags = 0, .buf = wb, .len = 2 },
66 { .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 },
67 };
68
69 if (i2c_transfer(state->i2c, msg, 2) != 2)
70 deb_i2c("i2c read error\n");
71
72 deb_i2c("reading i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,
73 (rb[0] << 8) | rb[1],(rb[0] << 8) | rb[1]);
74
75 return (rb[0] << 8) | rb[1];
76 }
77
dib3000_write_reg(struct dib3000_state * state,u16 reg,u16 val)78 static int dib3000_write_reg(struct dib3000_state *state, u16 reg, u16 val)
79 {
80 u8 b[] = {
81 (reg >> 8) & 0xff, reg & 0xff,
82 (val >> 8) & 0xff, val & 0xff,
83 };
84 struct i2c_msg msg[] = {
85 { .addr = state->config.demod_address, .flags = 0, .buf = b, .len = 4 }
86 };
87 deb_i2c("writing i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,val,val);
88
89 return i2c_transfer(state->i2c,msg, 1) != 1 ? -EREMOTEIO : 0;
90 }
91
dib3000_search_status(u16 irq,u16 lock)92 static int dib3000_search_status(u16 irq,u16 lock)
93 {
94 if (irq & 0x02) {
95 if (lock & 0x01) {
96 deb_srch("auto search succeeded\n");
97 return 1; // auto search succeeded
98 } else {
99 deb_srch("auto search not successful\n");
100 return 0; // auto search failed
101 }
102 } else if (irq & 0x01) {
103 deb_srch("auto search failed\n");
104 return 0; // auto search failed
105 }
106 return -1; // try again
107 }
108
109 /* for auto search */
110 static u16 dib3000_seq[2][2][2] = /* fft,gua, inv */
111 { /* fft */
112 { /* gua */
113 { 0, 1 }, /* 0 0 { 0,1 } */
114 { 3, 9 }, /* 0 1 { 0,1 } */
115 },
116 {
117 { 2, 5 }, /* 1 0 { 0,1 } */
118 { 6, 11 }, /* 1 1 { 0,1 } */
119 }
120 };
121
122 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
123 struct dvb_frontend_parameters *fep);
124
dib3000mb_set_frontend(struct dvb_frontend * fe,struct dvb_frontend_parameters * fep,int tuner)125 static int dib3000mb_set_frontend(struct dvb_frontend* fe,
126 struct dvb_frontend_parameters *fep, int tuner)
127 {
128 struct dib3000_state* state = fe->demodulator_priv;
129 struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
130 fe_code_rate_t fe_cr = FEC_NONE;
131 int search_state, seq;
132
133 if (tuner && fe->ops.tuner_ops.set_params) {
134 fe->ops.tuner_ops.set_params(fe, fep);
135 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
136
137 deb_setf("bandwidth: ");
138 switch (ofdm->bandwidth) {
139 case BANDWIDTH_8_MHZ:
140 deb_setf("8 MHz\n");
141 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
142 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
143 break;
144 case BANDWIDTH_7_MHZ:
145 deb_setf("7 MHz\n");
146 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
147 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
148 break;
149 case BANDWIDTH_6_MHZ:
150 deb_setf("6 MHz\n");
151 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
152 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
153 break;
154 case BANDWIDTH_AUTO:
155 return -EOPNOTSUPP;
156 default:
157 err("unkown bandwidth value.");
158 return -EINVAL;
159 }
160 }
161 wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
162
163 deb_setf("transmission mode: ");
164 switch (ofdm->transmission_mode) {
165 case TRANSMISSION_MODE_2K:
166 deb_setf("2k\n");
167 wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
168 break;
169 case TRANSMISSION_MODE_8K:
170 deb_setf("8k\n");
171 wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
172 break;
173 case TRANSMISSION_MODE_AUTO:
174 deb_setf("auto\n");
175 break;
176 default:
177 return -EINVAL;
178 }
179
180 deb_setf("guard: ");
181 switch (ofdm->guard_interval) {
182 case GUARD_INTERVAL_1_32:
183 deb_setf("1_32\n");
184 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
185 break;
186 case GUARD_INTERVAL_1_16:
187 deb_setf("1_16\n");
188 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
189 break;
190 case GUARD_INTERVAL_1_8:
191 deb_setf("1_8\n");
192 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
193 break;
194 case GUARD_INTERVAL_1_4:
195 deb_setf("1_4\n");
196 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
197 break;
198 case GUARD_INTERVAL_AUTO:
199 deb_setf("auto\n");
200 break;
201 default:
202 return -EINVAL;
203 }
204
205 deb_setf("inversion: ");
206 switch (fep->inversion) {
207 case INVERSION_OFF:
208 deb_setf("off\n");
209 wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
210 break;
211 case INVERSION_AUTO:
212 deb_setf("auto ");
213 break;
214 case INVERSION_ON:
215 deb_setf("on\n");
216 wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
217 break;
218 default:
219 return -EINVAL;
220 }
221
222 deb_setf("constellation: ");
223 switch (ofdm->constellation) {
224 case QPSK:
225 deb_setf("qpsk\n");
226 wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
227 break;
228 case QAM_16:
229 deb_setf("qam16\n");
230 wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
231 break;
232 case QAM_64:
233 deb_setf("qam64\n");
234 wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
235 break;
236 case QAM_AUTO:
237 break;
238 default:
239 return -EINVAL;
240 }
241 deb_setf("hierarchy: ");
242 switch (ofdm->hierarchy_information) {
243 case HIERARCHY_NONE:
244 deb_setf("none ");
245 /* fall through */
246 case HIERARCHY_1:
247 deb_setf("alpha=1\n");
248 wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
249 break;
250 case HIERARCHY_2:
251 deb_setf("alpha=2\n");
252 wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
253 break;
254 case HIERARCHY_4:
255 deb_setf("alpha=4\n");
256 wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
257 break;
258 case HIERARCHY_AUTO:
259 deb_setf("alpha=auto\n");
260 break;
261 default:
262 return -EINVAL;
263 }
264
265 deb_setf("hierarchy: ");
266 if (ofdm->hierarchy_information == HIERARCHY_NONE) {
267 deb_setf("none\n");
268 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
269 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
270 fe_cr = ofdm->code_rate_HP;
271 } else if (ofdm->hierarchy_information != HIERARCHY_AUTO) {
272 deb_setf("on\n");
273 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
274 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
275 fe_cr = ofdm->code_rate_LP;
276 }
277 deb_setf("fec: ");
278 switch (fe_cr) {
279 case FEC_1_2:
280 deb_setf("1_2\n");
281 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
282 break;
283 case FEC_2_3:
284 deb_setf("2_3\n");
285 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
286 break;
287 case FEC_3_4:
288 deb_setf("3_4\n");
289 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
290 break;
291 case FEC_5_6:
292 deb_setf("5_6\n");
293 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
294 break;
295 case FEC_7_8:
296 deb_setf("7_8\n");
297 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
298 break;
299 case FEC_NONE:
300 deb_setf("none ");
301 break;
302 case FEC_AUTO:
303 deb_setf("auto\n");
304 break;
305 default:
306 return -EINVAL;
307 }
308
309 seq = dib3000_seq
310 [ofdm->transmission_mode == TRANSMISSION_MODE_AUTO]
311 [ofdm->guard_interval == GUARD_INTERVAL_AUTO]
312 [fep->inversion == INVERSION_AUTO];
313
314 deb_setf("seq? %d\n", seq);
315
316 wr(DIB3000MB_REG_SEQ, seq);
317
318 wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
319
320 if (ofdm->transmission_mode == TRANSMISSION_MODE_2K) {
321 if (ofdm->guard_interval == GUARD_INTERVAL_1_8) {
322 wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
323 } else {
324 wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
325 }
326
327 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
328 } else {
329 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
330 }
331
332 wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
333 wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
334 wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
335
336 wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
337
338 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
339
340 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
341 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
342
343 /* wait for AGC lock */
344 msleep(70);
345
346 wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
347
348 /* something has to be auto searched */
349 if (ofdm->constellation == QAM_AUTO ||
350 ofdm->hierarchy_information == HIERARCHY_AUTO ||
351 fe_cr == FEC_AUTO ||
352 fep->inversion == INVERSION_AUTO) {
353 int as_count=0;
354
355 deb_setf("autosearch enabled.\n");
356
357 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
358
359 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
360 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
361
362 while ((search_state =
363 dib3000_search_status(
364 rd(DIB3000MB_REG_AS_IRQ_PENDING),
365 rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
366 msleep(1);
367
368 deb_setf("search_state after autosearch %d after %d checks\n",search_state,as_count);
369
370 if (search_state == 1) {
371 struct dvb_frontend_parameters feps;
372 if (dib3000mb_get_frontend(fe, &feps) == 0) {
373 deb_setf("reading tuning data from frontend succeeded.\n");
374 return dib3000mb_set_frontend(fe, &feps, 0);
375 }
376 }
377
378 } else {
379 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
380 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
381 }
382
383 return 0;
384 }
385
dib3000mb_fe_init(struct dvb_frontend * fe,int mobile_mode)386 static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
387 {
388 struct dib3000_state* state = fe->demodulator_priv;
389
390 deb_info("dib3000mb is getting up.\n");
391 wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
392
393 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
394
395 wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
396 wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
397
398 wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
399
400 wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
401
402 wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
403 wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
404
405 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
406
407 wr_foreach(dib3000mb_reg_impulse_noise,
408 dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
409
410 wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
411
412 wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
413
414 wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
415
416 wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
417
418 wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
419
420 wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
421 wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
422 wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
423 wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
424
425 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
426
427 wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
428 wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
429 wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
430 wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
431 wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
432 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
433 wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
434 wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
435 wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
436 wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
437 wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
438 wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
439 wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
440 wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
441 wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
442
443 wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
444
445 wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
446 wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
447 wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
448
449 wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
450
451 wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
452 wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
453 wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
454 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
455 wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
456 wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
457
458 wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
459
460 return 0;
461 }
462
dib3000mb_get_frontend(struct dvb_frontend * fe,struct dvb_frontend_parameters * fep)463 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
464 struct dvb_frontend_parameters *fep)
465 {
466 struct dib3000_state* state = fe->demodulator_priv;
467 struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
468 fe_code_rate_t *cr;
469 u16 tps_val;
470 int inv_test1,inv_test2;
471 u32 dds_val, threshold = 0x800000;
472
473 if (!rd(DIB3000MB_REG_TPS_LOCK))
474 return 0;
475
476 dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
477 deb_getf("DDS_VAL: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
478 if (dds_val < threshold)
479 inv_test1 = 0;
480 else if (dds_val == threshold)
481 inv_test1 = 1;
482 else
483 inv_test1 = 2;
484
485 dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
486 deb_getf("DDS_FREQ: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
487 if (dds_val < threshold)
488 inv_test2 = 0;
489 else if (dds_val == threshold)
490 inv_test2 = 1;
491 else
492 inv_test2 = 2;
493
494 fep->inversion =
495 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
496 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
497 INVERSION_ON : INVERSION_OFF;
498
499 deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, fep->inversion);
500
501 switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
502 case DIB3000_CONSTELLATION_QPSK:
503 deb_getf("QPSK ");
504 ofdm->constellation = QPSK;
505 break;
506 case DIB3000_CONSTELLATION_16QAM:
507 deb_getf("QAM16 ");
508 ofdm->constellation = QAM_16;
509 break;
510 case DIB3000_CONSTELLATION_64QAM:
511 deb_getf("QAM64 ");
512 ofdm->constellation = QAM_64;
513 break;
514 default:
515 err("Unexpected constellation returned by TPS (%d)", tps_val);
516 break;
517 }
518 deb_getf("TPS: %d\n", tps_val);
519
520 if (rd(DIB3000MB_REG_TPS_HRCH)) {
521 deb_getf("HRCH ON\n");
522 cr = &ofdm->code_rate_LP;
523 ofdm->code_rate_HP = FEC_NONE;
524 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
525 case DIB3000_ALPHA_0:
526 deb_getf("HIERARCHY_NONE ");
527 ofdm->hierarchy_information = HIERARCHY_NONE;
528 break;
529 case DIB3000_ALPHA_1:
530 deb_getf("HIERARCHY_1 ");
531 ofdm->hierarchy_information = HIERARCHY_1;
532 break;
533 case DIB3000_ALPHA_2:
534 deb_getf("HIERARCHY_2 ");
535 ofdm->hierarchy_information = HIERARCHY_2;
536 break;
537 case DIB3000_ALPHA_4:
538 deb_getf("HIERARCHY_4 ");
539 ofdm->hierarchy_information = HIERARCHY_4;
540 break;
541 default:
542 err("Unexpected ALPHA value returned by TPS (%d)", tps_val);
543 break;
544 }
545 deb_getf("TPS: %d\n", tps_val);
546
547 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
548 } else {
549 deb_getf("HRCH OFF\n");
550 cr = &ofdm->code_rate_HP;
551 ofdm->code_rate_LP = FEC_NONE;
552 ofdm->hierarchy_information = HIERARCHY_NONE;
553
554 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
555 }
556
557 switch (tps_val) {
558 case DIB3000_FEC_1_2:
559 deb_getf("FEC_1_2 ");
560 *cr = FEC_1_2;
561 break;
562 case DIB3000_FEC_2_3:
563 deb_getf("FEC_2_3 ");
564 *cr = FEC_2_3;
565 break;
566 case DIB3000_FEC_3_4:
567 deb_getf("FEC_3_4 ");
568 *cr = FEC_3_4;
569 break;
570 case DIB3000_FEC_5_6:
571 deb_getf("FEC_5_6 ");
572 *cr = FEC_4_5;
573 break;
574 case DIB3000_FEC_7_8:
575 deb_getf("FEC_7_8 ");
576 *cr = FEC_7_8;
577 break;
578 default:
579 err("Unexpected FEC returned by TPS (%d)", tps_val);
580 break;
581 }
582 deb_getf("TPS: %d\n",tps_val);
583
584 switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
585 case DIB3000_GUARD_TIME_1_32:
586 deb_getf("GUARD_INTERVAL_1_32 ");
587 ofdm->guard_interval = GUARD_INTERVAL_1_32;
588 break;
589 case DIB3000_GUARD_TIME_1_16:
590 deb_getf("GUARD_INTERVAL_1_16 ");
591 ofdm->guard_interval = GUARD_INTERVAL_1_16;
592 break;
593 case DIB3000_GUARD_TIME_1_8:
594 deb_getf("GUARD_INTERVAL_1_8 ");
595 ofdm->guard_interval = GUARD_INTERVAL_1_8;
596 break;
597 case DIB3000_GUARD_TIME_1_4:
598 deb_getf("GUARD_INTERVAL_1_4 ");
599 ofdm->guard_interval = GUARD_INTERVAL_1_4;
600 break;
601 default:
602 err("Unexpected Guard Time returned by TPS (%d)", tps_val);
603 break;
604 }
605 deb_getf("TPS: %d\n", tps_val);
606
607 switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
608 case DIB3000_TRANSMISSION_MODE_2K:
609 deb_getf("TRANSMISSION_MODE_2K ");
610 ofdm->transmission_mode = TRANSMISSION_MODE_2K;
611 break;
612 case DIB3000_TRANSMISSION_MODE_8K:
613 deb_getf("TRANSMISSION_MODE_8K ");
614 ofdm->transmission_mode = TRANSMISSION_MODE_8K;
615 break;
616 default:
617 err("unexpected transmission mode return by TPS (%d)", tps_val);
618 break;
619 }
620 deb_getf("TPS: %d\n", tps_val);
621
622 return 0;
623 }
624
dib3000mb_read_status(struct dvb_frontend * fe,fe_status_t * stat)625 static int dib3000mb_read_status(struct dvb_frontend* fe, fe_status_t *stat)
626 {
627 struct dib3000_state* state = fe->demodulator_priv;
628
629 *stat = 0;
630
631 if (rd(DIB3000MB_REG_AGC_LOCK))
632 *stat |= FE_HAS_SIGNAL;
633 if (rd(DIB3000MB_REG_CARRIER_LOCK))
634 *stat |= FE_HAS_CARRIER;
635 if (rd(DIB3000MB_REG_VIT_LCK))
636 *stat |= FE_HAS_VITERBI;
637 if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
638 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
639
640 deb_getf("actual status is %2x\n",*stat);
641
642 deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
643 rd(DIB3000MB_REG_TPS_LOCK),
644 rd(DIB3000MB_REG_TPS_QAM),
645 rd(DIB3000MB_REG_TPS_HRCH),
646 rd(DIB3000MB_REG_TPS_VIT_ALPHA),
647 rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
648 rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
649 rd(DIB3000MB_REG_TPS_GUARD_TIME),
650 rd(DIB3000MB_REG_TPS_FFT),
651 rd(DIB3000MB_REG_TPS_CELL_ID));
652
653 //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
654 return 0;
655 }
656
dib3000mb_read_ber(struct dvb_frontend * fe,u32 * ber)657 static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
658 {
659 struct dib3000_state* state = fe->demodulator_priv;
660
661 *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
662 return 0;
663 }
664
665 /* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
dib3000mb_read_signal_strength(struct dvb_frontend * fe,u16 * strength)666 static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
667 {
668 struct dib3000_state* state = fe->demodulator_priv;
669
670 *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
671 return 0;
672 }
673
dib3000mb_read_snr(struct dvb_frontend * fe,u16 * snr)674 static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
675 {
676 struct dib3000_state* state = fe->demodulator_priv;
677 short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
678 int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
679 rd(DIB3000MB_REG_NOISE_POWER_LSB);
680 *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
681 return 0;
682 }
683
dib3000mb_read_unc_blocks(struct dvb_frontend * fe,u32 * unc)684 static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
685 {
686 struct dib3000_state* state = fe->demodulator_priv;
687
688 *unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE);
689 return 0;
690 }
691
dib3000mb_sleep(struct dvb_frontend * fe)692 static int dib3000mb_sleep(struct dvb_frontend* fe)
693 {
694 struct dib3000_state* state = fe->demodulator_priv;
695 deb_info("dib3000mb is going to bed.\n");
696 wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
697 return 0;
698 }
699
dib3000mb_fe_get_tune_settings(struct dvb_frontend * fe,struct dvb_frontend_tune_settings * tune)700 static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
701 {
702 tune->min_delay_ms = 800;
703 return 0;
704 }
705
dib3000mb_fe_init_nonmobile(struct dvb_frontend * fe)706 static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
707 {
708 return dib3000mb_fe_init(fe, 0);
709 }
710
dib3000mb_set_frontend_and_tuner(struct dvb_frontend * fe,struct dvb_frontend_parameters * fep)711 static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep)
712 {
713 return dib3000mb_set_frontend(fe, fep, 1);
714 }
715
dib3000mb_release(struct dvb_frontend * fe)716 static void dib3000mb_release(struct dvb_frontend* fe)
717 {
718 struct dib3000_state *state = fe->demodulator_priv;
719 kfree(state);
720 }
721
722 /* pid filter and transfer stuff */
dib3000mb_pid_control(struct dvb_frontend * fe,int index,int pid,int onoff)723 static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
724 {
725 struct dib3000_state *state = fe->demodulator_priv;
726 pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
727 wr(index+DIB3000MB_REG_FIRST_PID,pid);
728 return 0;
729 }
730
dib3000mb_fifo_control(struct dvb_frontend * fe,int onoff)731 static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
732 {
733 struct dib3000_state *state = fe->demodulator_priv;
734
735 deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
736 if (onoff) {
737 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
738 } else {
739 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
740 }
741 return 0;
742 }
743
dib3000mb_pid_parse(struct dvb_frontend * fe,int onoff)744 static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
745 {
746 struct dib3000_state *state = fe->demodulator_priv;
747 deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
748 wr(DIB3000MB_REG_PID_PARSE,onoff);
749 return 0;
750 }
751
dib3000mb_tuner_pass_ctrl(struct dvb_frontend * fe,int onoff,u8 pll_addr)752 static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
753 {
754 struct dib3000_state *state = fe->demodulator_priv;
755 if (onoff) {
756 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
757 } else {
758 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
759 }
760 return 0;
761 }
762
763 static struct dvb_frontend_ops dib3000mb_ops;
764
dib3000mb_attach(const struct dib3000_config * config,struct i2c_adapter * i2c,struct dib_fe_xfer_ops * xfer_ops)765 struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
766 struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
767 {
768 struct dib3000_state* state = NULL;
769
770 /* allocate memory for the internal state */
771 state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL);
772 if (state == NULL)
773 goto error;
774
775 /* setup the state */
776 state->i2c = i2c;
777 memcpy(&state->config,config,sizeof(struct dib3000_config));
778
779 /* check for the correct demod */
780 if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
781 goto error;
782
783 if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
784 goto error;
785
786 /* create dvb_frontend */
787 memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
788 state->frontend.demodulator_priv = state;
789
790 /* set the xfer operations */
791 xfer_ops->pid_parse = dib3000mb_pid_parse;
792 xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
793 xfer_ops->pid_ctrl = dib3000mb_pid_control;
794 xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
795
796 return &state->frontend;
797
798 error:
799 kfree(state);
800 return NULL;
801 }
802
803 static struct dvb_frontend_ops dib3000mb_ops = {
804
805 .info = {
806 .name = "DiBcom 3000M-B DVB-T",
807 .type = FE_OFDM,
808 .frequency_min = 44250000,
809 .frequency_max = 867250000,
810 .frequency_stepsize = 62500,
811 .caps = FE_CAN_INVERSION_AUTO |
812 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
813 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
814 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
815 FE_CAN_TRANSMISSION_MODE_AUTO |
816 FE_CAN_GUARD_INTERVAL_AUTO |
817 FE_CAN_RECOVER |
818 FE_CAN_HIERARCHY_AUTO,
819 },
820
821 .release = dib3000mb_release,
822
823 .init = dib3000mb_fe_init_nonmobile,
824 .sleep = dib3000mb_sleep,
825
826 .set_frontend = dib3000mb_set_frontend_and_tuner,
827 .get_frontend = dib3000mb_get_frontend,
828 .get_tune_settings = dib3000mb_fe_get_tune_settings,
829
830 .read_status = dib3000mb_read_status,
831 .read_ber = dib3000mb_read_ber,
832 .read_signal_strength = dib3000mb_read_signal_strength,
833 .read_snr = dib3000mb_read_snr,
834 .read_ucblocks = dib3000mb_read_unc_blocks,
835 };
836
837 MODULE_AUTHOR(DRIVER_AUTHOR);
838 MODULE_DESCRIPTION(DRIVER_DESC);
839 MODULE_LICENSE("GPL");
840
841 EXPORT_SYMBOL(dib3000mb_attach);
842