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