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[ARM] Support register switch in nommu mode
[linux-2.6/verdex.git] / drivers / media / dvb / frontends / dib3000mc.c
blob3b303dbb61565db54ed15b4bbab810be2c622860
1 /*
2 * Frontend driver for mobile DVB-T demodulator DiBcom 3000P/M-C
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 #include <linux/config.h>
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
29 #include <linux/string.h>
30 #include <linux/slab.h>
31
32 #include "dib3000-common.h"
33 #include "dib3000mc_priv.h"
34 #include "dib3000.h"
35
36 /* Version information */
37 #define DRIVER_VERSION "0.1"
38 #define DRIVER_DESC "DiBcom 3000M-C 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,16=stat (|-able)).");
45 #endif
46 #define deb_info(args...) dprintk(0x01,args)
47 #define deb_xfer(args...) dprintk(0x02,args)
48 #define deb_setf(args...) dprintk(0x04,args)
49 #define deb_getf(args...) dprintk(0x08,args)
50 #define deb_stat(args...) dprintk(0x10,args)
51
52 static int dib3000mc_set_impulse_noise(struct dib3000_state * state, int mode,
53 fe_transmit_mode_t transmission_mode, fe_bandwidth_t bandwidth)
54 {
55 switch (transmission_mode) {
56 case TRANSMISSION_MODE_2K:
57 wr_foreach(dib3000mc_reg_fft,dib3000mc_fft_modes[0]);
58 break;
59 case TRANSMISSION_MODE_8K:
60 wr_foreach(dib3000mc_reg_fft,dib3000mc_fft_modes[1]);
61 break;
62 default:
63 break;
64 }
65
66 switch (bandwidth) {
67 /* case BANDWIDTH_5_MHZ:
68 wr_foreach(dib3000mc_reg_impulse_noise,dib3000mc_impluse_noise[0]);
69 break; */
70 case BANDWIDTH_6_MHZ:
71 wr_foreach(dib3000mc_reg_impulse_noise,dib3000mc_impluse_noise[1]);
72 break;
73 case BANDWIDTH_7_MHZ:
74 wr_foreach(dib3000mc_reg_impulse_noise,dib3000mc_impluse_noise[2]);
75 break;
76 case BANDWIDTH_8_MHZ:
77 wr_foreach(dib3000mc_reg_impulse_noise,dib3000mc_impluse_noise[3]);
78 break;
79 default:
80 break;
81 }
82
83 switch (mode) {
84 case 0: /* no impulse */ /* fall through */
85 wr_foreach(dib3000mc_reg_imp_noise_ctl,dib3000mc_imp_noise_ctl[0]);
86 break;
87 case 1: /* new algo */
88 wr_foreach(dib3000mc_reg_imp_noise_ctl,dib3000mc_imp_noise_ctl[1]);
89 set_or(DIB3000MC_REG_IMP_NOISE_55,DIB3000MC_IMP_NEW_ALGO(0)); /* gives 1<<10 */
90 break;
91 default: /* old algo */
92 wr_foreach(dib3000mc_reg_imp_noise_ctl,dib3000mc_imp_noise_ctl[3]);
93 break;
94 }
95 return 0;
96 }
97
98 static int dib3000mc_set_timing(struct dib3000_state *state, int upd_offset,
99 fe_transmit_mode_t fft, fe_bandwidth_t bw)
100 {
101 u16 timf_msb,timf_lsb;
102 s32 tim_offset,tim_sgn;
103 u64 comp1,comp2,comp=0;
104
105 switch (bw) {
106 case BANDWIDTH_8_MHZ: comp = DIB3000MC_CLOCK_REF*8; break;
107 case BANDWIDTH_7_MHZ: comp = DIB3000MC_CLOCK_REF*7; break;
108 case BANDWIDTH_6_MHZ: comp = DIB3000MC_CLOCK_REF*6; break;
109 default: err("unknown bandwidth (%d)",bw); break;
110 }
111 timf_msb = (comp >> 16) & 0xff;
112 timf_lsb = (comp & 0xffff);
113
114 // Update the timing offset ;
115 if (upd_offset > 0) {
116 if (!state->timing_offset_comp_done) {
117 msleep(200);
118 state->timing_offset_comp_done = 1;
119 }
120 tim_offset = rd(DIB3000MC_REG_TIMING_OFFS_MSB);
121 if ((tim_offset & 0x2000) == 0x2000)
122 tim_offset |= 0xC000;
123 if (fft == TRANSMISSION_MODE_2K)
124 tim_offset <<= 2;
125 state->timing_offset += tim_offset;
126 }
127
128 tim_offset = state->timing_offset;
129 if (tim_offset < 0) {
130 tim_sgn = 1;
131 tim_offset = -tim_offset;
132 } else
133 tim_sgn = 0;
134
135 comp1 = (u32)tim_offset * (u32)timf_lsb ;
136 comp2 = (u32)tim_offset * (u32)timf_msb ;
137 comp = ((comp1 >> 16) + comp2) >> 7;
138
139 if (tim_sgn == 0)
140 comp = (u32)(timf_msb << 16) + (u32) timf_lsb + comp;
141 else
142 comp = (u32)(timf_msb << 16) + (u32) timf_lsb - comp ;
143
144 timf_msb = (comp >> 16) & 0xff;
145 timf_lsb = comp & 0xffff;
146
147 wr(DIB3000MC_REG_TIMING_FREQ_MSB,timf_msb);
148 wr(DIB3000MC_REG_TIMING_FREQ_LSB,timf_lsb);
149 return 0;
150 }
151
152 static int dib3000mc_init_auto_scan(struct dib3000_state *state, fe_bandwidth_t bw, int boost)
153 {
154 if (boost) {
155 wr(DIB3000MC_REG_SCAN_BOOST,DIB3000MC_SCAN_BOOST_ON);
156 } else {
157 wr(DIB3000MC_REG_SCAN_BOOST,DIB3000MC_SCAN_BOOST_OFF);
158 }
159 switch (bw) {
160 case BANDWIDTH_8_MHZ:
161 wr_foreach(dib3000mc_reg_bandwidth,dib3000mc_bandwidth_8mhz);
162 break;
163 case BANDWIDTH_7_MHZ:
164 wr_foreach(dib3000mc_reg_bandwidth,dib3000mc_bandwidth_7mhz);
165 break;
166 case BANDWIDTH_6_MHZ:
167 wr_foreach(dib3000mc_reg_bandwidth,dib3000mc_bandwidth_6mhz);
168 break;
169 /* case BANDWIDTH_5_MHZ:
170 wr_foreach(dib3000mc_reg_bandwidth,dib3000mc_bandwidth_5mhz);
171 break;*/
172 case BANDWIDTH_AUTO:
173 return -EOPNOTSUPP;
174 default:
175 err("unknown bandwidth value (%d).",bw);
176 return -EINVAL;
177 }
178 if (boost) {
179 u32 timeout = (rd(DIB3000MC_REG_BW_TIMOUT_MSB) << 16) +
180 rd(DIB3000MC_REG_BW_TIMOUT_LSB);
181 timeout *= 85; timeout >>= 7;
182 wr(DIB3000MC_REG_BW_TIMOUT_MSB,(timeout >> 16) & 0xffff);
183 wr(DIB3000MC_REG_BW_TIMOUT_LSB,timeout & 0xffff);
184 }
185 return 0;
186 }
187
188 static int dib3000mc_set_adp_cfg(struct dib3000_state *state, fe_modulation_t con)
189 {
190 switch (con) {
191 case QAM_64:
192 wr_foreach(dib3000mc_reg_adp_cfg,dib3000mc_adp_cfg[2]);
193 break;
194 case QAM_16:
195 wr_foreach(dib3000mc_reg_adp_cfg,dib3000mc_adp_cfg[1]);
196 break;
197 case QPSK:
198 wr_foreach(dib3000mc_reg_adp_cfg,dib3000mc_adp_cfg[0]);
199 break;
200 case QAM_AUTO:
201 break;
202 default:
203 warn("unkown constellation.");
204 break;
205 }
206 return 0;
207 }
208
209 static int dib3000mc_set_general_cfg(struct dib3000_state *state, struct dvb_frontend_parameters *fep, int *auto_val)
210 {
211 struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
212 fe_code_rate_t fe_cr = FEC_NONE;
213 u8 fft=0, guard=0, qam=0, alpha=0, sel_hp=0, cr=0, hrch=0;
214 int seq;
215
216 switch (ofdm->transmission_mode) {
217 case TRANSMISSION_MODE_2K: fft = DIB3000_TRANSMISSION_MODE_2K; break;
218 case TRANSMISSION_MODE_8K: fft = DIB3000_TRANSMISSION_MODE_8K; break;
219 case TRANSMISSION_MODE_AUTO: break;
220 default: return -EINVAL;
221 }
222 switch (ofdm->guard_interval) {
223 case GUARD_INTERVAL_1_32: guard = DIB3000_GUARD_TIME_1_32; break;
224 case GUARD_INTERVAL_1_16: guard = DIB3000_GUARD_TIME_1_16; break;
225 case GUARD_INTERVAL_1_8: guard = DIB3000_GUARD_TIME_1_8; break;
226 case GUARD_INTERVAL_1_4: guard = DIB3000_GUARD_TIME_1_4; break;
227 case GUARD_INTERVAL_AUTO: break;
228 default: return -EINVAL;
229 }
230 switch (ofdm->constellation) {
231 case QPSK: qam = DIB3000_CONSTELLATION_QPSK; break;
232 case QAM_16: qam = DIB3000_CONSTELLATION_16QAM; break;
233 case QAM_64: qam = DIB3000_CONSTELLATION_64QAM; break;
234 case QAM_AUTO: break;
235 default: return -EINVAL;
236 }
237 switch (ofdm->hierarchy_information) {
238 case HIERARCHY_NONE: /* fall through */
239 case HIERARCHY_1: alpha = DIB3000_ALPHA_1; break;
240 case HIERARCHY_2: alpha = DIB3000_ALPHA_2; break;
241 case HIERARCHY_4: alpha = DIB3000_ALPHA_4; break;
242 case HIERARCHY_AUTO: break;
243 default: return -EINVAL;
244 }
245 if (ofdm->hierarchy_information == HIERARCHY_NONE) {
246 hrch = DIB3000_HRCH_OFF;
247 sel_hp = DIB3000_SELECT_HP;
248 fe_cr = ofdm->code_rate_HP;
249 } else if (ofdm->hierarchy_information != HIERARCHY_AUTO) {
250 hrch = DIB3000_HRCH_ON;
251 sel_hp = DIB3000_SELECT_LP;
252 fe_cr = ofdm->code_rate_LP;
253 }
254 switch (fe_cr) {
255 case FEC_1_2: cr = DIB3000_FEC_1_2; break;
256 case FEC_2_3: cr = DIB3000_FEC_2_3; break;
257 case FEC_3_4: cr = DIB3000_FEC_3_4; break;
258 case FEC_5_6: cr = DIB3000_FEC_5_6; break;
259 case FEC_7_8: cr = DIB3000_FEC_7_8; break;
260 case FEC_NONE: break;
261 case FEC_AUTO: break;
262 default: return -EINVAL;
263 }
264
265 wr(DIB3000MC_REG_DEMOD_PARM,DIB3000MC_DEMOD_PARM(alpha,qam,guard,fft));
266 wr(DIB3000MC_REG_HRCH_PARM,DIB3000MC_HRCH_PARM(sel_hp,cr,hrch));
267
268 switch (fep->inversion) {
269 case INVERSION_OFF:
270 wr(DIB3000MC_REG_SET_DDS_FREQ_MSB,DIB3000MC_DDS_FREQ_MSB_INV_OFF);
271 break;
272 case INVERSION_AUTO: /* fall through */
273 case INVERSION_ON:
274 wr(DIB3000MC_REG_SET_DDS_FREQ_MSB,DIB3000MC_DDS_FREQ_MSB_INV_ON);
275 break;
276 default:
277 return -EINVAL;
278 }
279
280 seq = dib3000_seq
281 [ofdm->transmission_mode == TRANSMISSION_MODE_AUTO]
282 [ofdm->guard_interval == GUARD_INTERVAL_AUTO]
283 [fep->inversion == INVERSION_AUTO];
284
285 deb_setf("seq? %d\n", seq);
286 wr(DIB3000MC_REG_SEQ_TPS,DIB3000MC_SEQ_TPS(seq,1));
287 *auto_val = ofdm->constellation == QAM_AUTO ||
288 ofdm->hierarchy_information == HIERARCHY_AUTO ||
289 ofdm->guard_interval == GUARD_INTERVAL_AUTO ||
290 ofdm->transmission_mode == TRANSMISSION_MODE_AUTO ||
291 fe_cr == FEC_AUTO ||
292 fep->inversion == INVERSION_AUTO;
293 return 0;
294 }
295
296 static int dib3000mc_get_frontend(struct dvb_frontend* fe,
297 struct dvb_frontend_parameters *fep)
298 {
299 struct dib3000_state* state = fe->demodulator_priv;
300 struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
301 fe_code_rate_t *cr;
302 u16 tps_val,cr_val;
303 int inv_test1,inv_test2;
304 u32 dds_val, threshold = 0x1000000;
305
306 if (!(rd(DIB3000MC_REG_LOCK_507) & DIB3000MC_LOCK_507))
307 return 0;
308
309 dds_val = (rd(DIB3000MC_REG_DDS_FREQ_MSB) << 16) + rd(DIB3000MC_REG_DDS_FREQ_LSB);
310 deb_getf("DDS_FREQ: %6x\n",dds_val);
311 if (dds_val < threshold)
312 inv_test1 = 0;
313 else if (dds_val == threshold)
314 inv_test1 = 1;
315 else
316 inv_test1 = 2;
317
318 dds_val = (rd(DIB3000MC_REG_SET_DDS_FREQ_MSB) << 16) + rd(DIB3000MC_REG_SET_DDS_FREQ_LSB);
319 deb_getf("DDS_SET_FREQ: %6x\n",dds_val);
320 if (dds_val < threshold)
321 inv_test2 = 0;
322 else if (dds_val == threshold)
323 inv_test2 = 1;
324 else
325 inv_test2 = 2;
326
327 fep->inversion =
328 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
329 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
330 INVERSION_ON : INVERSION_OFF;
331
332 deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, fep->inversion);
333
334 fep->frequency = state->last_tuned_freq;
335 fep->u.ofdm.bandwidth= state->last_tuned_bw;
336
337 tps_val = rd(DIB3000MC_REG_TUNING_PARM);
338
339 switch (DIB3000MC_TP_QAM(tps_val)) {
340 case DIB3000_CONSTELLATION_QPSK:
341 deb_getf("QPSK ");
342 ofdm->constellation = QPSK;
343 break;
344 case DIB3000_CONSTELLATION_16QAM:
345 deb_getf("QAM16 ");
346 ofdm->constellation = QAM_16;
347 break;
348 case DIB3000_CONSTELLATION_64QAM:
349 deb_getf("QAM64 ");
350 ofdm->constellation = QAM_64;
351 break;
352 default:
353 err("Unexpected constellation returned by TPS (%d)", tps_val);
354 break;
355 }
356
357 if (DIB3000MC_TP_HRCH(tps_val)) {
358 deb_getf("HRCH ON ");
359 cr = &ofdm->code_rate_LP;
360 ofdm->code_rate_HP = FEC_NONE;
361 switch (DIB3000MC_TP_ALPHA(tps_val)) {
362 case DIB3000_ALPHA_0:
363 deb_getf("HIERARCHY_NONE ");
364 ofdm->hierarchy_information = HIERARCHY_NONE;
365 break;
366 case DIB3000_ALPHA_1:
367 deb_getf("HIERARCHY_1 ");
368 ofdm->hierarchy_information = HIERARCHY_1;
369 break;
370 case DIB3000_ALPHA_2:
371 deb_getf("HIERARCHY_2 ");
372 ofdm->hierarchy_information = HIERARCHY_2;
373 break;
374 case DIB3000_ALPHA_4:
375 deb_getf("HIERARCHY_4 ");
376 ofdm->hierarchy_information = HIERARCHY_4;
377 break;
378 default:
379 err("Unexpected ALPHA value returned by TPS (%d)", tps_val);
380 break;
381 }
382 cr_val = DIB3000MC_TP_FEC_CR_LP(tps_val);
383 } else {
384 deb_getf("HRCH OFF ");
385 cr = &ofdm->code_rate_HP;
386 ofdm->code_rate_LP = FEC_NONE;
387 ofdm->hierarchy_information = HIERARCHY_NONE;
388 cr_val = DIB3000MC_TP_FEC_CR_HP(tps_val);
389 }
390
391 switch (cr_val) {
392 case DIB3000_FEC_1_2:
393 deb_getf("FEC_1_2 ");
394 *cr = FEC_1_2;
395 break;
396 case DIB3000_FEC_2_3:
397 deb_getf("FEC_2_3 ");
398 *cr = FEC_2_3;
399 break;
400 case DIB3000_FEC_3_4:
401 deb_getf("FEC_3_4 ");
402 *cr = FEC_3_4;
403 break;
404 case DIB3000_FEC_5_6:
405 deb_getf("FEC_5_6 ");
406 *cr = FEC_4_5;
407 break;
408 case DIB3000_FEC_7_8:
409 deb_getf("FEC_7_8 ");
410 *cr = FEC_7_8;
411 break;
412 default:
413 err("Unexpected FEC returned by TPS (%d)", tps_val);
414 break;
415 }
416
417 switch (DIB3000MC_TP_GUARD(tps_val)) {
418 case DIB3000_GUARD_TIME_1_32:
419 deb_getf("GUARD_INTERVAL_1_32 ");
420 ofdm->guard_interval = GUARD_INTERVAL_1_32;
421 break;
422 case DIB3000_GUARD_TIME_1_16:
423 deb_getf("GUARD_INTERVAL_1_16 ");
424 ofdm->guard_interval = GUARD_INTERVAL_1_16;
425 break;
426 case DIB3000_GUARD_TIME_1_8:
427 deb_getf("GUARD_INTERVAL_1_8 ");
428 ofdm->guard_interval = GUARD_INTERVAL_1_8;
429 break;
430 case DIB3000_GUARD_TIME_1_4:
431 deb_getf("GUARD_INTERVAL_1_4 ");
432 ofdm->guard_interval = GUARD_INTERVAL_1_4;
433 break;
434 default:
435 err("Unexpected Guard Time returned by TPS (%d)", tps_val);
436 break;
437 }
438
439 switch (DIB3000MC_TP_FFT(tps_val)) {
440 case DIB3000_TRANSMISSION_MODE_2K:
441 deb_getf("TRANSMISSION_MODE_2K ");
442 ofdm->transmission_mode = TRANSMISSION_MODE_2K;
443 break;
444 case DIB3000_TRANSMISSION_MODE_8K:
445 deb_getf("TRANSMISSION_MODE_8K ");
446 ofdm->transmission_mode = TRANSMISSION_MODE_8K;
447 break;
448 default:
449 err("unexpected transmission mode return by TPS (%d)", tps_val);
450 break;
451 }
452 deb_getf("\n");
453
454 return 0;
455 }
456
457 static int dib3000mc_set_frontend(struct dvb_frontend* fe,
458 struct dvb_frontend_parameters *fep, int tuner)
459 {
460 struct dib3000_state* state = fe->demodulator_priv;
461 struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
462 int search_state,auto_val;
463 u16 val;
464
465 if (tuner && state->config.pll_set) { /* initial call from dvb */
466 state->config.pll_set(fe,fep);
467
468 state->last_tuned_freq = fep->frequency;
469 // if (!scanboost) {
470 dib3000mc_set_timing(state,0,ofdm->transmission_mode,ofdm->bandwidth);
471 dib3000mc_init_auto_scan(state, ofdm->bandwidth, 0);
472 state->last_tuned_bw = ofdm->bandwidth;
473
474 wr_foreach(dib3000mc_reg_agc_bandwidth,dib3000mc_agc_bandwidth);
475 wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_AGC);
476 wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_OFF);
477
478 /* Default cfg isi offset adp */
479 wr_foreach(dib3000mc_reg_offset,dib3000mc_offset[0]);
480
481 wr(DIB3000MC_REG_ISI,DIB3000MC_ISI_DEFAULT | DIB3000MC_ISI_INHIBIT);
482 dib3000mc_set_adp_cfg(state,ofdm->constellation);
483 wr(DIB3000MC_REG_UNK_133,DIB3000MC_UNK_133);
484
485 wr_foreach(dib3000mc_reg_bandwidth_general,dib3000mc_bandwidth_general);
486 /* power smoothing */
487 if (ofdm->bandwidth != BANDWIDTH_8_MHZ) {
488 wr_foreach(dib3000mc_reg_bw,dib3000mc_bw[0]);
489 } else {
490 wr_foreach(dib3000mc_reg_bw,dib3000mc_bw[3]);
491 }
492 auto_val = 0;
493 dib3000mc_set_general_cfg(state,fep,&auto_val);
494 dib3000mc_set_impulse_noise(state,0,ofdm->constellation,ofdm->bandwidth);
495
496 val = rd(DIB3000MC_REG_DEMOD_PARM);
497 wr(DIB3000MC_REG_DEMOD_PARM,val|DIB3000MC_DEMOD_RST_DEMOD_ON);
498 wr(DIB3000MC_REG_DEMOD_PARM,val);
499 // }
500 msleep(70);
501
502 /* something has to be auto searched */
503 if (auto_val) {
504 int as_count=0;
505
506 deb_setf("autosearch enabled.\n");
507
508 val = rd(DIB3000MC_REG_DEMOD_PARM);
509 wr(DIB3000MC_REG_DEMOD_PARM,val | DIB3000MC_DEMOD_RST_AUTO_SRCH_ON);
510 wr(DIB3000MC_REG_DEMOD_PARM,val);
511
512 while ((search_state = dib3000_search_status(
513 rd(DIB3000MC_REG_AS_IRQ),1)) < 0 && as_count++ < 100)
514 msleep(10);
515
516 deb_info("search_state after autosearch %d after %d checks\n",search_state,as_count);
517
518 if (search_state == 1) {
519 struct dvb_frontend_parameters feps;
520 if (dib3000mc_get_frontend(fe, &feps) == 0) {
521 deb_setf("reading tuning data from frontend succeeded.\n");
522 return dib3000mc_set_frontend(fe, &feps, 0);
523 }
524 }
525 } else {
526 dib3000mc_set_impulse_noise(state,0,ofdm->transmission_mode,ofdm->bandwidth);
527 wr(DIB3000MC_REG_ISI,DIB3000MC_ISI_DEFAULT|DIB3000MC_ISI_ACTIVATE);
528 dib3000mc_set_adp_cfg(state,ofdm->constellation);
529
530 /* set_offset_cfg */
531 wr_foreach(dib3000mc_reg_offset,
532 dib3000mc_offset[(ofdm->transmission_mode == TRANSMISSION_MODE_8K)+1]);
533 }
534 } else { /* second call, after autosearch (fka: set_WithKnownParams) */
535 // dib3000mc_set_timing(state,1,ofdm->transmission_mode,ofdm->bandwidth);
536
537 auto_val = 0;
538 dib3000mc_set_general_cfg(state,fep,&auto_val);
539 if (auto_val)
540 deb_info("auto_val is true, even though an auto search was already performed.\n");
541
542 dib3000mc_set_impulse_noise(state,0,ofdm->constellation,ofdm->bandwidth);
543
544 val = rd(DIB3000MC_REG_DEMOD_PARM);
545 wr(DIB3000MC_REG_DEMOD_PARM,val | DIB3000MC_DEMOD_RST_AUTO_SRCH_ON);
546 wr(DIB3000MC_REG_DEMOD_PARM,val);
547
548 msleep(30);
549
550 wr(DIB3000MC_REG_ISI,DIB3000MC_ISI_DEFAULT|DIB3000MC_ISI_ACTIVATE);
551 dib3000mc_set_adp_cfg(state,ofdm->constellation);
552 wr_foreach(dib3000mc_reg_offset,
553 dib3000mc_offset[(ofdm->transmission_mode == TRANSMISSION_MODE_8K)+1]);
554 }
555 return 0;
556 }
557
558 static int dib3000mc_fe_init(struct dvb_frontend* fe, int mobile_mode)
559 {
560 struct dib3000_state *state = fe->demodulator_priv;
561 deb_info("init start\n");
562
563 state->timing_offset = 0;
564 state->timing_offset_comp_done = 0;
565
566 wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_CONFIG);
567 wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_OFF);
568 wr(DIB3000MC_REG_CLK_CFG_1,DIB3000MC_CLK_CFG_1_POWER_UP);
569 wr(DIB3000MC_REG_CLK_CFG_2,DIB3000MC_CLK_CFG_2_PUP_MOBILE);
570 wr(DIB3000MC_REG_CLK_CFG_3,DIB3000MC_CLK_CFG_3_POWER_UP);
571 wr(DIB3000MC_REG_CLK_CFG_7,DIB3000MC_CLK_CFG_7_INIT);
572
573 wr(DIB3000MC_REG_RST_UNC,DIB3000MC_RST_UNC_OFF);
574 wr(DIB3000MC_REG_UNK_19,DIB3000MC_UNK_19);
575
576 wr(33,5);
577 wr(36,81);
578 wr(DIB3000MC_REG_UNK_88,DIB3000MC_UNK_88);
579
580 wr(DIB3000MC_REG_UNK_99,DIB3000MC_UNK_99);
581 wr(DIB3000MC_REG_UNK_111,DIB3000MC_UNK_111_PH_N_MODE_0); /* phase noise algo off */
582
583 /* mobile mode - portable reception */
584 wr_foreach(dib3000mc_reg_mobile_mode,dib3000mc_mobile_mode[1]);
585
586 /* TUNER_PANASONIC_ENV57H12D5: */
587 wr_foreach(dib3000mc_reg_agc_bandwidth,dib3000mc_agc_bandwidth);
588 wr_foreach(dib3000mc_reg_agc_bandwidth_general,dib3000mc_agc_bandwidth_general);
589 wr_foreach(dib3000mc_reg_agc,dib3000mc_agc_tuner[1]);
590
591 wr(DIB3000MC_REG_UNK_110,DIB3000MC_UNK_110);
592 wr(26,0x6680);
593 wr(DIB3000MC_REG_UNK_1,DIB3000MC_UNK_1);
594 wr(DIB3000MC_REG_UNK_2,DIB3000MC_UNK_2);
595 wr(DIB3000MC_REG_UNK_3,DIB3000MC_UNK_3);
596 wr(DIB3000MC_REG_SEQ_TPS,DIB3000MC_SEQ_TPS_DEFAULT);
597
598 wr_foreach(dib3000mc_reg_bandwidth,dib3000mc_bandwidth_8mhz);
599 wr_foreach(dib3000mc_reg_bandwidth_general,dib3000mc_bandwidth_general);
600
601 wr(DIB3000MC_REG_UNK_4,DIB3000MC_UNK_4);
602
603 wr(DIB3000MC_REG_SET_DDS_FREQ_MSB,DIB3000MC_DDS_FREQ_MSB_INV_OFF);
604 wr(DIB3000MC_REG_SET_DDS_FREQ_LSB,DIB3000MC_DDS_FREQ_LSB);
605
606 dib3000mc_set_timing(state,0,TRANSMISSION_MODE_8K,BANDWIDTH_8_MHZ);
607 // wr_foreach(dib3000mc_reg_timing_freq,dib3000mc_timing_freq[3]);
608
609 wr(DIB3000MC_REG_UNK_120,DIB3000MC_UNK_120);
610 wr(DIB3000MC_REG_UNK_134,DIB3000MC_UNK_134);
611 wr(DIB3000MC_REG_FEC_CFG,DIB3000MC_FEC_CFG);
612
613 wr(DIB3000MC_REG_DIVERSITY3,DIB3000MC_DIVERSITY3_IN_OFF);
614
615 dib3000mc_set_impulse_noise(state,0,TRANSMISSION_MODE_8K,BANDWIDTH_8_MHZ);
616
617 /* output mode control, just the MPEG2_SLAVE */
618 // set_or(DIB3000MC_REG_OUTMODE,DIB3000MC_OM_SLAVE);
619 wr(DIB3000MC_REG_OUTMODE,DIB3000MC_OM_SLAVE);
620 wr(DIB3000MC_REG_SMO_MODE,DIB3000MC_SMO_MODE_SLAVE);
621 wr(DIB3000MC_REG_FIFO_THRESHOLD,DIB3000MC_FIFO_THRESHOLD_SLAVE);
622 wr(DIB3000MC_REG_ELEC_OUT,DIB3000MC_ELEC_OUT_SLAVE);
623
624 /* MPEG2_PARALLEL_CONTINUOUS_CLOCK
625 wr(DIB3000MC_REG_OUTMODE,
626 DIB3000MC_SET_OUTMODE(DIB3000MC_OM_PAR_CONT_CLK,
627 rd(DIB3000MC_REG_OUTMODE)));
628
629 wr(DIB3000MC_REG_SMO_MODE,
630 DIB3000MC_SMO_MODE_DEFAULT |
631 DIB3000MC_SMO_MODE_188);
632
633 wr(DIB3000MC_REG_FIFO_THRESHOLD,DIB3000MC_FIFO_THRESHOLD_DEFAULT);
634 wr(DIB3000MC_REG_ELEC_OUT,DIB3000MC_ELEC_OUT_DIV_OUT_ON);
635 */
636
637 /* diversity */
638 wr(DIB3000MC_REG_DIVERSITY1,DIB3000MC_DIVERSITY1_DEFAULT);
639 wr(DIB3000MC_REG_DIVERSITY2,DIB3000MC_DIVERSITY2_DEFAULT);
640
641 set_and(DIB3000MC_REG_DIVERSITY3,DIB3000MC_DIVERSITY3_IN_OFF);
642
643 set_or(DIB3000MC_REG_CLK_CFG_7,DIB3000MC_CLK_CFG_7_DIV_IN_OFF);
644
645 if (state->config.pll_init)
646 state->config.pll_init(fe);
647
648 deb_info("init end\n");
649 return 0;
650 }
651 static int dib3000mc_read_status(struct dvb_frontend* fe, fe_status_t *stat)
652 {
653 struct dib3000_state* state = fe->demodulator_priv;
654 u16 lock = rd(DIB3000MC_REG_LOCKING);
655
656 *stat = 0;
657 if (DIB3000MC_AGC_LOCK(lock))
658 *stat |= FE_HAS_SIGNAL;
659 if (DIB3000MC_CARRIER_LOCK(lock))
660 *stat |= FE_HAS_CARRIER;
661 if (DIB3000MC_TPS_LOCK(lock))
662 *stat |= FE_HAS_VITERBI;
663 if (DIB3000MC_MPEG_SYNC_LOCK(lock))
664 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
665
666 deb_stat("actual status is %2x fifo_level: %x,244: %x, 206: %x, 207: %x, 1040: %x\n",*stat,rd(510),rd(244),rd(206),rd(207),rd(1040));
667
668 return 0;
669 }
670
671 static int dib3000mc_read_ber(struct dvb_frontend* fe, u32 *ber)
672 {
673 struct dib3000_state* state = fe->demodulator_priv;
674 *ber = ((rd(DIB3000MC_REG_BER_MSB) << 16) | rd(DIB3000MC_REG_BER_LSB));
675 return 0;
676 }
677
678 static int dib3000mc_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
679 {
680 struct dib3000_state* state = fe->demodulator_priv;
681
682 *unc = rd(DIB3000MC_REG_PACKET_ERRORS);
683 return 0;
684 }
685
686 /* see dib3000mb.c for calculation comments */
687 static int dib3000mc_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
688 {
689 struct dib3000_state* state = fe->demodulator_priv;
690 u16 val = rd(DIB3000MC_REG_SIGNAL_NOISE_LSB);
691 *strength = (((val >> 6) & 0xff) << 8) + (val & 0x3f);
692
693 deb_stat("signal: mantisse = %d, exponent = %d\n",(*strength >> 8) & 0xff, *strength & 0xff);
694 return 0;
695 }
696
697 /* see dib3000mb.c for calculation comments */
698 static int dib3000mc_read_snr(struct dvb_frontend* fe, u16 *snr)
699 {
700 struct dib3000_state* state = fe->demodulator_priv;
701 u16 val = rd(DIB3000MC_REG_SIGNAL_NOISE_LSB),
702 val2 = rd(DIB3000MC_REG_SIGNAL_NOISE_MSB);
703 u16 sig,noise;
704
705 sig = (((val >> 6) & 0xff) << 8) + (val & 0x3f);
706 noise = (((val >> 4) & 0xff) << 8) + ((val & 0xf) << 2) + ((val2 >> 14) & 0x3);
707 if (noise == 0)
708 *snr = 0xffff;
709 else
710 *snr = (u16) sig/noise;
711
712 deb_stat("signal: mantisse = %d, exponent = %d\n",(sig >> 8) & 0xff, sig & 0xff);
713 deb_stat("noise: mantisse = %d, exponent = %d\n",(noise >> 8) & 0xff, noise & 0xff);
714 deb_stat("snr: %d\n",*snr);
715 return 0;
716 }
717
718 static int dib3000mc_sleep(struct dvb_frontend* fe)
719 {
720 struct dib3000_state* state = fe->demodulator_priv;
721
722 set_or(DIB3000MC_REG_CLK_CFG_7,DIB3000MC_CLK_CFG_7_PWR_DOWN);
723 wr(DIB3000MC_REG_CLK_CFG_1,DIB3000MC_CLK_CFG_1_POWER_DOWN);
724 wr(DIB3000MC_REG_CLK_CFG_2,DIB3000MC_CLK_CFG_2_POWER_DOWN);
725 wr(DIB3000MC_REG_CLK_CFG_3,DIB3000MC_CLK_CFG_3_POWER_DOWN);
726 return 0;
727 }
728
729 static int dib3000mc_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
730 {
731 tune->min_delay_ms = 1000;
732 return 0;
733 }
734
735 static int dib3000mc_fe_init_nonmobile(struct dvb_frontend* fe)
736 {
737 return dib3000mc_fe_init(fe, 0);
738 }
739
740 static int dib3000mc_set_frontend_and_tuner(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep)
741 {
742 return dib3000mc_set_frontend(fe, fep, 1);
743 }
744
745 static void dib3000mc_release(struct dvb_frontend* fe)
746 {
747 struct dib3000_state *state = fe->demodulator_priv;
748 kfree(state);
749 }
750
751 /* pid filter and transfer stuff */
752 static int dib3000mc_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
753 {
754 struct dib3000_state *state = fe->demodulator_priv;
755 pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
756 wr(index+DIB3000MC_REG_FIRST_PID,pid);
757 return 0;
758 }
759
760 static int dib3000mc_fifo_control(struct dvb_frontend *fe, int onoff)
761 {
762 struct dib3000_state *state = fe->demodulator_priv;
763 u16 tmp = rd(DIB3000MC_REG_SMO_MODE);
764
765 deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
766
767 if (onoff) {
768 deb_xfer("%d %x\n",tmp & DIB3000MC_SMO_MODE_FIFO_UNFLUSH,tmp & DIB3000MC_SMO_MODE_FIFO_UNFLUSH);
769 wr(DIB3000MC_REG_SMO_MODE,tmp & DIB3000MC_SMO_MODE_FIFO_UNFLUSH);
770 } else {
771 deb_xfer("%d %x\n",tmp | DIB3000MC_SMO_MODE_FIFO_FLUSH,tmp | DIB3000MC_SMO_MODE_FIFO_FLUSH);
772 wr(DIB3000MC_REG_SMO_MODE,tmp | DIB3000MC_SMO_MODE_FIFO_FLUSH);
773 }
774 return 0;
775 }
776
777 static int dib3000mc_pid_parse(struct dvb_frontend *fe, int onoff)
778 {
779 struct dib3000_state *state = fe->demodulator_priv;
780 u16 tmp = rd(DIB3000MC_REG_SMO_MODE);
781
782 deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
783
784 if (onoff) {
785 wr(DIB3000MC_REG_SMO_MODE,tmp | DIB3000MC_SMO_MODE_PID_PARSE);
786 } else {
787 wr(DIB3000MC_REG_SMO_MODE,tmp & DIB3000MC_SMO_MODE_NO_PID_PARSE);
788 }
789 return 0;
790 }
791
792 static int dib3000mc_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
793 {
794 struct dib3000_state *state = fe->demodulator_priv;
795 if (onoff) {
796 wr(DIB3000MC_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
797 } else {
798 wr(DIB3000MC_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
799 }
800 return 0;
801 }
802
803 static int dib3000mc_demod_init(struct dib3000_state *state)
804 {
805 u16 default_addr = 0x0a;
806 /* first init */
807 if (state->config.demod_address != default_addr) {
808 deb_info("initializing the demod the first time. Setting demod addr to 0x%x\n",default_addr);
809 wr(DIB3000MC_REG_ELEC_OUT,DIB3000MC_ELEC_OUT_DIV_OUT_ON);
810 wr(DIB3000MC_REG_OUTMODE,DIB3000MC_OM_PAR_CONT_CLK);
811
812 wr(DIB3000MC_REG_RST_I2C_ADDR,
813 DIB3000MC_DEMOD_ADDR(default_addr) |
814 DIB3000MC_DEMOD_ADDR_ON);
815
816 state->config.demod_address = default_addr;
817
818 wr(DIB3000MC_REG_RST_I2C_ADDR,
819 DIB3000MC_DEMOD_ADDR(default_addr));
820 } else
821 deb_info("demod is already initialized. Demod addr: 0x%x\n",state->config.demod_address);
822 return 0;
823 }
824
825
826 static struct dvb_frontend_ops dib3000mc_ops;
827
828 struct dvb_frontend* dib3000mc_attach(const struct dib3000_config* config,
829 struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
830 {
831 struct dib3000_state* state = NULL;
832 u16 devid;
833
834 /* allocate memory for the internal state */
835 state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL);
836 if (state == NULL)
837 goto error;
838
839 /* setup the state */
840 state->i2c = i2c;
841 memcpy(&state->config,config,sizeof(struct dib3000_config));
842 memcpy(&state->ops, &dib3000mc_ops, sizeof(struct dvb_frontend_ops));
843
844 /* check for the correct demod */
845 if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
846 goto error;
847
848 devid = rd(DIB3000_REG_DEVICE_ID);
849 if (devid != DIB3000MC_DEVICE_ID && devid != DIB3000P_DEVICE_ID)
850 goto error;
851
852 switch (devid) {
853 case DIB3000MC_DEVICE_ID:
854 info("Found a DiBcom 3000M-C, interesting...");
855 break;
856 case DIB3000P_DEVICE_ID:
857 info("Found a DiBcom 3000P.");
858 break;
859 }
860
861 /* create dvb_frontend */
862 state->frontend.ops = &state->ops;
863 state->frontend.demodulator_priv = state;
864
865 /* set the xfer operations */
866 xfer_ops->pid_parse = dib3000mc_pid_parse;
867 xfer_ops->fifo_ctrl = dib3000mc_fifo_control;
868 xfer_ops->pid_ctrl = dib3000mc_pid_control;
869 xfer_ops->tuner_pass_ctrl = dib3000mc_tuner_pass_ctrl;
870
871 dib3000mc_demod_init(state);
872
873 return &state->frontend;
874
875 error:
876 kfree(state);
877 return NULL;
878 }
879
880 static struct dvb_frontend_ops dib3000mc_ops = {
881
882 .info = {
883 .name = "DiBcom 3000P/M-C DVB-T",
884 .type = FE_OFDM,
885 .frequency_min = 44250000,
886 .frequency_max = 867250000,
887 .frequency_stepsize = 62500,
888 .caps = FE_CAN_INVERSION_AUTO |
889 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
890 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
891 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
892 FE_CAN_TRANSMISSION_MODE_AUTO |
893 FE_CAN_GUARD_INTERVAL_AUTO |
894 FE_CAN_RECOVER |
895 FE_CAN_HIERARCHY_AUTO,
896 },
897
898 .release = dib3000mc_release,
899
900 .init = dib3000mc_fe_init_nonmobile,
901 .sleep = dib3000mc_sleep,
902
903 .set_frontend = dib3000mc_set_frontend_and_tuner,
904 .get_frontend = dib3000mc_get_frontend,
905 .get_tune_settings = dib3000mc_fe_get_tune_settings,
906
907 .read_status = dib3000mc_read_status,
908 .read_ber = dib3000mc_read_ber,
909 .read_signal_strength = dib3000mc_read_signal_strength,
910 .read_snr = dib3000mc_read_snr,
911 .read_ucblocks = dib3000mc_read_unc_blocks,
912 };
913
914 MODULE_AUTHOR(DRIVER_AUTHOR);
915 MODULE_DESCRIPTION(DRIVER_DESC);
916 MODULE_LICENSE("GPL");
917
918 EXPORT_SYMBOL(dib3000mc_attach);
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