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7#include <linux/delay.h>
8#include <linux/i2c.h>
9#include <linux/videodev.h>
10#include <media/tuner.h>
11#include <media/v4l2-common.h>
12#include <media/tuner-types.h>
13#include "tuner-i2c.h"
14#include "tuner-simple.h"
15
16static int debug = 0;
17module_param(debug, int, 0644);
18MODULE_PARM_DESC(debug, "enable verbose debug messages");
19
20#define PREFIX "tuner-simple "
21
22static int offset = 0;
23module_param(offset, int, 0664);
24MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
25
26
27
28
29
30
31
32
33
34
35
36
37#define TEMIC_SET_PAL_I 0x05
38#define TEMIC_SET_PAL_DK 0x09
39#define TEMIC_SET_PAL_L 0x0a
40#define TEMIC_SET_PAL_L2 0x0b
41#define TEMIC_SET_PAL_BG 0x0c
42
43
44
45
46
47
48
49
50
51
52
53#define PHILIPS_SET_PAL_I 0x01
54#define PHILIPS_SET_PAL_BGDK 0x09
55#define PHILIPS_SET_PAL_L2 0x0a
56#define PHILIPS_SET_PAL_L 0x0b
57
58
59
60
61
62
63
64
65
66
67#define PHILIPS_MF_SET_STD_BG 0x01
68#define PHILIPS_MF_SET_STD_L 0x03
69#define PHILIPS_MF_SET_STD_LC 0x02
70
71
72
73#define TUNER_RATIO_MASK 0x06
74#define TUNER_RATIO_SELECT_50 0x00
75#define TUNER_RATIO_SELECT_32 0x02
76#define TUNER_RATIO_SELECT_166 0x04
77#define TUNER_RATIO_SELECT_62 0x06
78
79#define TUNER_CHARGE_PUMP 0x40
80
81
82
83#define TUNER_POR 0x80
84#define TUNER_FL 0x40
85#define TUNER_MODE 0x38
86#define TUNER_AFC 0x07
87#define TUNER_SIGNAL 0x07
88#define TUNER_STEREO 0x10
89
90#define TUNER_PLL_LOCKED 0x40
91#define TUNER_STEREO_MK3 0x04
92
93struct tuner_simple_priv {
94 u16 last_div;
95 struct tuner_i2c_props i2c_props;
96
97 unsigned int type;
98 struct tunertype *tun;
99
100 u32 frequency;
101};
102
103
104
105static int tuner_read_status(struct dvb_frontend *fe)
106{
107 struct tuner_simple_priv *priv = fe->tuner_priv;
108 unsigned char byte;
109
110 if (1 != tuner_i2c_xfer_recv(&priv->i2c_props,&byte,1))
111 return 0;
112
113 return byte;
114}
115
116static inline int tuner_signal(const int status)
117{
118 return (status & TUNER_SIGNAL) << 13;
119}
120
121static inline int tuner_stereo(const int type, const int status)
122{
123 switch (type) {
124 case TUNER_PHILIPS_FM1216ME_MK3:
125 case TUNER_PHILIPS_FM1236_MK3:
126 case TUNER_PHILIPS_FM1256_IH3:
127 case TUNER_LG_NTSC_TAPE:
128 return ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
129 default:
130 return status & TUNER_STEREO;
131 }
132}
133
134static inline int tuner_islocked(const int status)
135{
136 return (status & TUNER_FL);
137}
138
139static inline int tuner_afcstatus(const int status)
140{
141 return (status & TUNER_AFC) - 2;
142}
143
144
145static int simple_get_status(struct dvb_frontend *fe, u32 *status)
146{
147 struct tuner_simple_priv *priv = fe->tuner_priv;
148 int tuner_status = tuner_read_status(fe);
149
150 *status = 0;
151
152 if (tuner_islocked(tuner_status))
153 *status = TUNER_STATUS_LOCKED;
154 if (tuner_stereo(priv->type, tuner_status))
155 *status |= TUNER_STATUS_STEREO;
156
157 tuner_dbg("AFC Status: %d\n", tuner_afcstatus(tuner_status));
158
159 return 0;
160}
161
162static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
163{
164 struct tuner_simple_priv *priv = fe->tuner_priv;
165 int signal = tuner_signal(tuner_read_status(fe));
166
167 *strength = signal;
168
169 tuner_dbg("Signal strength: %d\n", signal);
170
171 return 0;
172}
173
174
175
176static int simple_set_tv_freq(struct dvb_frontend *fe,
177 struct analog_parameters *params)
178{
179 struct tuner_simple_priv *priv = fe->tuner_priv;
180 u8 config, cb, tuneraddr;
181 u16 div;
182 struct tunertype *tun;
183 u8 buffer[4];
184 int rc, IFPCoff, i, j;
185 enum param_type desired_type;
186 struct tuner_params *t_params;
187
188 tun = priv->tun;
189
190
191
192
193
194
195
196
197
198
199
200
201
202 if (params->std == V4L2_STD_NTSC_M_JP) {
203 IFPCoff = 940;
204 desired_type = TUNER_PARAM_TYPE_NTSC;
205 } else if ((params->std & V4L2_STD_MN) &&
206 !(params->std & ~V4L2_STD_MN)) {
207 IFPCoff = 732;
208 desired_type = TUNER_PARAM_TYPE_NTSC;
209 } else if (params->std == V4L2_STD_SECAM_LC) {
210 IFPCoff = 543;
211 desired_type = TUNER_PARAM_TYPE_SECAM;
212 } else {
213 IFPCoff = 623;
214 desired_type = TUNER_PARAM_TYPE_PAL;
215 }
216
217 for (j = 0; j < tun->count-1; j++) {
218 if (desired_type != tun->params[j].type)
219 continue;
220 break;
221 }
222
223 if (desired_type != tun->params[j].type) {
224 tuner_dbg("IFPCoff = %d: tuner_t_params undefined for tuner %d\n",
225 IFPCoff, priv->type);
226 j = 0;
227 }
228 t_params = &tun->params[j];
229
230 for (i = 0; i < t_params->count; i++) {
231 if (params->frequency > t_params->ranges[i].limit)
232 continue;
233 break;
234 }
235 if (i == t_params->count) {
236 tuner_dbg("TV frequency out of range (%d > %d)",
237 params->frequency, t_params->ranges[i - 1].limit);
238 params->frequency = t_params->ranges[--i].limit;
239 }
240 config = t_params->ranges[i].config;
241 cb = t_params->ranges[i].cb;
242
243
244
245 tuner_dbg("tv: param %d, range %d\n",j,i);
246
247 div=params->frequency + IFPCoff + offset;
248
249 tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
250 params->frequency / 16, params->frequency % 16 * 100 / 16,
251 IFPCoff / 16, IFPCoff % 16 * 100 / 16,
252 offset / 16, offset % 16 * 100 / 16,
253 div);
254
255
256 switch (priv->type) {
257 case TUNER_PHILIPS_SECAM:
258
259
260
261 cb &= ~0x03;
262 if (params->std & V4L2_STD_SECAM_L)
263 cb |= PHILIPS_MF_SET_STD_L;
264 else if (params->std & V4L2_STD_SECAM_LC)
265 cb |= PHILIPS_MF_SET_STD_LC;
266 else
267 cb |= PHILIPS_MF_SET_STD_BG;
268 break;
269
270 case TUNER_TEMIC_4046FM5:
271 cb &= ~0x0f;
272
273 if (params->std & V4L2_STD_PAL_BG) {
274 cb |= TEMIC_SET_PAL_BG;
275
276 } else if (params->std & V4L2_STD_PAL_I) {
277 cb |= TEMIC_SET_PAL_I;
278
279 } else if (params->std & V4L2_STD_PAL_DK) {
280 cb |= TEMIC_SET_PAL_DK;
281
282 } else if (params->std & V4L2_STD_SECAM_L) {
283 cb |= TEMIC_SET_PAL_L;
284
285 }
286 break;
287
288 case TUNER_PHILIPS_FQ1216ME:
289 cb &= ~0x0f;
290
291 if (params->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
292 cb |= PHILIPS_SET_PAL_BGDK;
293
294 } else if (params->std & V4L2_STD_PAL_I) {
295 cb |= PHILIPS_SET_PAL_I;
296
297 } else if (params->std & V4L2_STD_SECAM_L) {
298 cb |= PHILIPS_SET_PAL_L;
299
300 }
301 break;
302
303 case TUNER_PHILIPS_ATSC:
304
305
306
307
308 cb &= ~0x03;
309 if (!(params->std & V4L2_STD_ATSC))
310 cb |= 2;
311
312 break;
313
314 case TUNER_MICROTUNE_4042FI5:
315
316 config |= TUNER_CHARGE_PUMP;
317 break;
318
319 case TUNER_PHILIPS_TUV1236D:
320
321
322
323
324 buffer[0] = 0x14;
325 buffer[1] = 0x00;
326 buffer[2] = 0x17;
327 buffer[3] = 0x00;
328 cb &= ~0x40;
329 if (params->std & V4L2_STD_ATSC) {
330 cb |= 0x40;
331 buffer[1] = 0x04;
332 }
333
334 tuneraddr = priv->i2c_props.addr;
335 priv->i2c_props.addr = 0x0a;
336 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[0],2)))
337 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
338 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[2],2)))
339 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
340 priv->i2c_props.addr = tuneraddr;
341
342 break;
343 }
344
345 if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
346 buffer[0] = config;
347 buffer[1] = cb;
348 buffer[2] = (div>>8) & 0x7f;
349 buffer[3] = div & 0xff;
350 } else {
351 buffer[0] = (div>>8) & 0x7f;
352 buffer[1] = div & 0xff;
353 buffer[2] = config;
354 buffer[3] = cb;
355 }
356 priv->last_div = div;
357 if (t_params->has_tda9887) {
358 int config = 0;
359 int is_secam_l = (params->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
360 !(params->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
361
362 if (params->std == V4L2_STD_SECAM_LC) {
363 if (t_params->port1_active ^ t_params->port1_invert_for_secam_lc)
364 config |= TDA9887_PORT1_ACTIVE;
365 if (t_params->port2_active ^ t_params->port2_invert_for_secam_lc)
366 config |= TDA9887_PORT2_ACTIVE;
367 }
368 else {
369 if (t_params->port1_active)
370 config |= TDA9887_PORT1_ACTIVE;
371 if (t_params->port2_active)
372 config |= TDA9887_PORT2_ACTIVE;
373 }
374 if (t_params->intercarrier_mode)
375 config |= TDA9887_INTERCARRIER;
376 if (is_secam_l) {
377 if (i == 0 && t_params->default_top_secam_low)
378 config |= TDA9887_TOP(t_params->default_top_secam_low);
379 else if (i == 1 && t_params->default_top_secam_mid)
380 config |= TDA9887_TOP(t_params->default_top_secam_mid);
381 else if (t_params->default_top_secam_high)
382 config |= TDA9887_TOP(t_params->default_top_secam_high);
383 }
384 else {
385 if (i == 0 && t_params->default_top_low)
386 config |= TDA9887_TOP(t_params->default_top_low);
387 else if (i == 1 && t_params->default_top_mid)
388 config |= TDA9887_TOP(t_params->default_top_mid);
389 else if (t_params->default_top_high)
390 config |= TDA9887_TOP(t_params->default_top_high);
391 }
392 if (t_params->default_pll_gating_18)
393 config |= TDA9887_GATING_18;
394 i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
395 }
396 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
397 buffer[0],buffer[1],buffer[2],buffer[3]);
398
399 if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
400 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
401
402 switch (priv->type) {
403 case TUNER_LG_TDVS_H06XF:
404
405 buffer[0] = buffer[2];
406 buffer[0] &= ~0x20;
407 buffer[0] |= 0x18;
408 buffer[1] = 0x20;
409 tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
410
411 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,2)))
412 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
413 break;
414 case TUNER_MICROTUNE_4042FI5:
415 {
416
417 unsigned long timeout = jiffies + msecs_to_jiffies(1);
418 u8 status_byte = 0;
419
420
421 for (;;) {
422 if (time_after(jiffies,timeout))
423 return 0;
424 if (1 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props,&status_byte,1))) {
425 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
426 break;
427 }
428 if (status_byte & TUNER_PLL_LOCKED)
429 break;
430 udelay(10);
431 }
432
433
434 config &= ~TUNER_CHARGE_PUMP;
435 buffer[0] = (div>>8) & 0x7f;
436 buffer[1] = div & 0xff;
437 buffer[2] = config;
438 buffer[3] = cb;
439 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
440 buffer[0],buffer[1],buffer[2],buffer[3]);
441
442 if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
443 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
444 break;
445 }
446 }
447 return 0;
448}
449
450static int simple_set_radio_freq(struct dvb_frontend *fe,
451 struct analog_parameters *params)
452{
453 struct tunertype *tun;
454 struct tuner_simple_priv *priv = fe->tuner_priv;
455 u8 buffer[4];
456 u16 div;
457 int rc, j;
458 struct tuner_params *t_params;
459 unsigned int freq = params->frequency;
460
461 tun = priv->tun;
462
463 for (j = tun->count-1; j > 0; j--)
464 if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
465 break;
466
467 t_params = &tun->params[j];
468
469
470 switch (t_params->radio_if) {
471 case 0:
472 freq += (unsigned int)(10.7*16000);
473 break;
474 case 1:
475 freq += (unsigned int)(33.3*16000);
476 break;
477 case 2:
478 freq += (unsigned int)(41.3*16000);
479 break;
480 default:
481 tuner_warn("Unsupported radio_if value %d\n", t_params->radio_if);
482 return 0;
483 }
484
485
486 switch (priv->type) {
487 case TUNER_TENA_9533_DI:
488 case TUNER_YMEC_TVF_5533MF:
489 tuner_dbg("This tuner doesn't have FM. Most cards have a TEA5767 for FM\n");
490 return 0;
491 case TUNER_PHILIPS_FM1216ME_MK3:
492 case TUNER_PHILIPS_FM1236_MK3:
493 case TUNER_PHILIPS_FMD1216ME_MK3:
494 case TUNER_LG_NTSC_TAPE:
495 case TUNER_PHILIPS_FM1256_IH3:
496 buffer[3] = 0x19;
497 break;
498 case TUNER_TNF_5335MF:
499 buffer[3] = 0x11;
500 break;
501 case TUNER_LG_PAL_FM:
502 buffer[3] = 0xa5;
503 break;
504 case TUNER_THOMSON_DTT761X:
505 buffer[3] = 0x39;
506 break;
507 case TUNER_MICROTUNE_4049FM5:
508 default:
509 buffer[3] = 0xa4;
510 break;
511 }
512
513 buffer[2] = (t_params->ranges[0].config & ~TUNER_RATIO_MASK) |
514 TUNER_RATIO_SELECT_50;
515
516
517
518
519 div = (freq + 400) / 800;
520
521 if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
522 buffer[0] = buffer[2];
523 buffer[1] = buffer[3];
524 buffer[2] = (div>>8) & 0x7f;
525 buffer[3] = div & 0xff;
526 } else {
527 buffer[0] = (div>>8) & 0x7f;
528 buffer[1] = div & 0xff;
529 }
530
531 tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
532 buffer[0],buffer[1],buffer[2],buffer[3]);
533 priv->last_div = div;
534
535 if (t_params->has_tda9887) {
536 int config = 0;
537 if (t_params->port1_active && !t_params->port1_fm_high_sensitivity)
538 config |= TDA9887_PORT1_ACTIVE;
539 if (t_params->port2_active && !t_params->port2_fm_high_sensitivity)
540 config |= TDA9887_PORT2_ACTIVE;
541 if (t_params->intercarrier_mode)
542 config |= TDA9887_INTERCARRIER;
543
544
545 if (t_params->fm_gain_normal)
546 config |= TDA9887_GAIN_NORMAL;
547 if (t_params->radio_if == 2)
548 config |= TDA9887_RIF_41_3;
549 i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
550 }
551 if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
552 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
553
554 return 0;
555}
556
557static int simple_set_params(struct dvb_frontend *fe,
558 struct analog_parameters *params)
559{
560 struct tuner_simple_priv *priv = fe->tuner_priv;
561 int ret = -EINVAL;
562
563 switch (params->mode) {
564 case V4L2_TUNER_RADIO:
565 ret = simple_set_radio_freq(fe, params);
566 priv->frequency = params->frequency * 125 / 2;
567 break;
568 case V4L2_TUNER_ANALOG_TV:
569 case V4L2_TUNER_DIGITAL_TV:
570 ret = simple_set_tv_freq(fe, params);
571 priv->frequency = params->frequency * 62500;
572 break;
573 }
574
575 return ret;
576}
577
578
579static int simple_release(struct dvb_frontend *fe)
580{
581 kfree(fe->tuner_priv);
582 fe->tuner_priv = NULL;
583
584 return 0;
585}
586
587static int simple_get_frequency(struct dvb_frontend *fe, u32 *frequency)
588{
589 struct tuner_simple_priv *priv = fe->tuner_priv;
590 *frequency = priv->frequency;
591 return 0;
592}
593
594static struct dvb_tuner_ops simple_tuner_ops = {
595 .set_analog_params = simple_set_params,
596 .release = simple_release,
597 .get_frequency = simple_get_frequency,
598 .get_status = simple_get_status,
599 .get_rf_strength = simple_get_rf_strength,
600};
601
602struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
603 struct i2c_adapter *i2c_adap,
604 u8 i2c_addr,
605 struct simple_tuner_config *cfg)
606{
607 struct tuner_simple_priv *priv = NULL;
608
609 priv = kzalloc(sizeof(struct tuner_simple_priv), GFP_KERNEL);
610 if (priv == NULL)
611 return NULL;
612 fe->tuner_priv = priv;
613
614 priv->i2c_props.addr = i2c_addr;
615 priv->i2c_props.adap = i2c_adap;
616 priv->type = cfg->type;
617 priv->tun = cfg->tun;
618
619 memcpy(&fe->ops.tuner_ops, &simple_tuner_ops, sizeof(struct dvb_tuner_ops));
620
621 tuner_info("type set to %d (%s)\n", cfg->type, cfg->tun->name);
622
623 strlcpy(fe->ops.tuner_ops.info.name, cfg->tun->name, sizeof(fe->ops.tuner_ops.info.name));
624
625 return fe;
626}
627
628
629EXPORT_SYMBOL_GPL(simple_tuner_attach);
630
631MODULE_DESCRIPTION("Simple 4-control-bytes style tuner driver");
632MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
633MODULE_LICENSE("GPL");
634
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