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-rw-r--r--drivers/media/common/tuners/tda9887.c717
1 files changed, 717 insertions, 0 deletions
diff --git a/drivers/media/common/tuners/tda9887.c b/drivers/media/common/tuners/tda9887.c
new file mode 100644
index 000000000000..a0545ba957b0
--- /dev/null
+++ b/drivers/media/common/tuners/tda9887.c
@@ -0,0 +1,717 @@
1#include <linux/module.h>
2#include <linux/kernel.h>
3#include <linux/i2c.h>
4#include <linux/types.h>
5#include <linux/init.h>
6#include <linux/errno.h>
7#include <linux/slab.h>
8#include <linux/delay.h>
9#include <linux/videodev.h>
10#include <media/v4l2-common.h>
11#include <media/tuner.h>
12#include "tuner-i2c.h"
13#include "tda9887.h"
14
15
16/* Chips:
17 TDA9885 (PAL, NTSC)
18 TDA9886 (PAL, SECAM, NTSC)
19 TDA9887 (PAL, SECAM, NTSC, FM Radio)
20
21 Used as part of several tuners
22*/
23
24static int debug;
25module_param(debug, int, 0644);
26MODULE_PARM_DESC(debug, "enable verbose debug messages");
27
28static DEFINE_MUTEX(tda9887_list_mutex);
29static LIST_HEAD(hybrid_tuner_instance_list);
30
31struct tda9887_priv {
32 struct tuner_i2c_props i2c_props;
33 struct list_head hybrid_tuner_instance_list;
34
35 unsigned char data[4];
36 unsigned int config;
37 unsigned int mode;
38 unsigned int audmode;
39 v4l2_std_id std;
40};
41
42/* ---------------------------------------------------------------------- */
43
44#define UNSET (-1U)
45
46struct tvnorm {
47 v4l2_std_id std;
48 char *name;
49 unsigned char b;
50 unsigned char c;
51 unsigned char e;
52};
53
54/* ---------------------------------------------------------------------- */
55
56//
57// TDA defines
58//
59
60//// first reg (b)
61#define cVideoTrapBypassOFF 0x00 // bit b0
62#define cVideoTrapBypassON 0x01 // bit b0
63
64#define cAutoMuteFmInactive 0x00 // bit b1
65#define cAutoMuteFmActive 0x02 // bit b1
66
67#define cIntercarrier 0x00 // bit b2
68#define cQSS 0x04 // bit b2
69
70#define cPositiveAmTV 0x00 // bit b3:4
71#define cFmRadio 0x08 // bit b3:4
72#define cNegativeFmTV 0x10 // bit b3:4
73
74
75#define cForcedMuteAudioON 0x20 // bit b5
76#define cForcedMuteAudioOFF 0x00 // bit b5
77
78#define cOutputPort1Active 0x00 // bit b6
79#define cOutputPort1Inactive 0x40 // bit b6
80
81#define cOutputPort2Active 0x00 // bit b7
82#define cOutputPort2Inactive 0x80 // bit b7
83
84
85//// second reg (c)
86#define cDeemphasisOFF 0x00 // bit c5
87#define cDeemphasisON 0x20 // bit c5
88
89#define cDeemphasis75 0x00 // bit c6
90#define cDeemphasis50 0x40 // bit c6
91
92#define cAudioGain0 0x00 // bit c7
93#define cAudioGain6 0x80 // bit c7
94
95#define cTopMask 0x1f // bit c0:4
96#define cTopDefault 0x10 // bit c0:4
97
98//// third reg (e)
99#define cAudioIF_4_5 0x00 // bit e0:1
100#define cAudioIF_5_5 0x01 // bit e0:1
101#define cAudioIF_6_0 0x02 // bit e0:1
102#define cAudioIF_6_5 0x03 // bit e0:1
103
104
105#define cVideoIFMask 0x1c // bit e2:4
106/* Video IF selection in TV Mode (bit B3=0) */
107#define cVideoIF_58_75 0x00 // bit e2:4
108#define cVideoIF_45_75 0x04 // bit e2:4
109#define cVideoIF_38_90 0x08 // bit e2:4
110#define cVideoIF_38_00 0x0C // bit e2:4
111#define cVideoIF_33_90 0x10 // bit e2:4
112#define cVideoIF_33_40 0x14 // bit e2:4
113#define cRadioIF_45_75 0x18 // bit e2:4
114#define cRadioIF_38_90 0x1C // bit e2:4
115
116/* IF1 selection in Radio Mode (bit B3=1) */
117#define cRadioIF_33_30 0x00 // bit e2,4 (also 0x10,0x14)
118#define cRadioIF_41_30 0x04 // bit e2,4
119
120/* Output of AFC pin in radio mode when bit E7=1 */
121#define cRadioAGC_SIF 0x00 // bit e3
122#define cRadioAGC_FM 0x08 // bit e3
123
124#define cTunerGainNormal 0x00 // bit e5
125#define cTunerGainLow 0x20 // bit e5
126
127#define cGating_18 0x00 // bit e6
128#define cGating_36 0x40 // bit e6
129
130#define cAgcOutON 0x80 // bit e7
131#define cAgcOutOFF 0x00 // bit e7
132
133/* ---------------------------------------------------------------------- */
134
135static struct tvnorm tvnorms[] = {
136 {
137 .std = V4L2_STD_PAL_BG | V4L2_STD_PAL_H | V4L2_STD_PAL_N,
138 .name = "PAL-BGHN",
139 .b = ( cNegativeFmTV |
140 cQSS ),
141 .c = ( cDeemphasisON |
142 cDeemphasis50 |
143 cTopDefault),
144 .e = ( cGating_36 |
145 cAudioIF_5_5 |
146 cVideoIF_38_90 ),
147 },{
148 .std = V4L2_STD_PAL_I,
149 .name = "PAL-I",
150 .b = ( cNegativeFmTV |
151 cQSS ),
152 .c = ( cDeemphasisON |
153 cDeemphasis50 |
154 cTopDefault),
155 .e = ( cGating_36 |
156 cAudioIF_6_0 |
157 cVideoIF_38_90 ),
158 },{
159 .std = V4L2_STD_PAL_DK,
160 .name = "PAL-DK",
161 .b = ( cNegativeFmTV |
162 cQSS ),
163 .c = ( cDeemphasisON |
164 cDeemphasis50 |
165 cTopDefault),
166 .e = ( cGating_36 |
167 cAudioIF_6_5 |
168 cVideoIF_38_90 ),
169 },{
170 .std = V4L2_STD_PAL_M | V4L2_STD_PAL_Nc,
171 .name = "PAL-M/Nc",
172 .b = ( cNegativeFmTV |
173 cQSS ),
174 .c = ( cDeemphasisON |
175 cDeemphasis75 |
176 cTopDefault),
177 .e = ( cGating_36 |
178 cAudioIF_4_5 |
179 cVideoIF_45_75 ),
180 },{
181 .std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
182 .name = "SECAM-BGH",
183 .b = ( cPositiveAmTV |
184 cQSS ),
185 .c = ( cTopDefault),
186 .e = ( cGating_36 |
187 cAudioIF_5_5 |
188 cVideoIF_38_90 ),
189 },{
190 .std = V4L2_STD_SECAM_L,
191 .name = "SECAM-L",
192 .b = ( cPositiveAmTV |
193 cQSS ),
194 .c = ( cTopDefault),
195 .e = ( cGating_36 |
196 cAudioIF_6_5 |
197 cVideoIF_38_90 ),
198 },{
199 .std = V4L2_STD_SECAM_LC,
200 .name = "SECAM-L'",
201 .b = ( cOutputPort2Inactive |
202 cPositiveAmTV |
203 cQSS ),
204 .c = ( cTopDefault),
205 .e = ( cGating_36 |
206 cAudioIF_6_5 |
207 cVideoIF_33_90 ),
208 },{
209 .std = V4L2_STD_SECAM_DK,
210 .name = "SECAM-DK",
211 .b = ( cNegativeFmTV |
212 cQSS ),
213 .c = ( cDeemphasisON |
214 cDeemphasis50 |
215 cTopDefault),
216 .e = ( cGating_36 |
217 cAudioIF_6_5 |
218 cVideoIF_38_90 ),
219 },{
220 .std = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR,
221 .name = "NTSC-M",
222 .b = ( cNegativeFmTV |
223 cQSS ),
224 .c = ( cDeemphasisON |
225 cDeemphasis75 |
226 cTopDefault),
227 .e = ( cGating_36 |
228 cAudioIF_4_5 |
229 cVideoIF_45_75 ),
230 },{
231 .std = V4L2_STD_NTSC_M_JP,
232 .name = "NTSC-M-JP",
233 .b = ( cNegativeFmTV |
234 cQSS ),
235 .c = ( cDeemphasisON |
236 cDeemphasis50 |
237 cTopDefault),
238 .e = ( cGating_36 |
239 cAudioIF_4_5 |
240 cVideoIF_58_75 ),
241 }
242};
243
244static struct tvnorm radio_stereo = {
245 .name = "Radio Stereo",
246 .b = ( cFmRadio |
247 cQSS ),
248 .c = ( cDeemphasisOFF |
249 cAudioGain6 |
250 cTopDefault),
251 .e = ( cTunerGainLow |
252 cAudioIF_5_5 |
253 cRadioIF_38_90 ),
254};
255
256static struct tvnorm radio_mono = {
257 .name = "Radio Mono",
258 .b = ( cFmRadio |
259 cQSS ),
260 .c = ( cDeemphasisON |
261 cDeemphasis75 |
262 cTopDefault),
263 .e = ( cTunerGainLow |
264 cAudioIF_5_5 |
265 cRadioIF_38_90 ),
266};
267
268/* ---------------------------------------------------------------------- */
269
270static void dump_read_message(struct dvb_frontend *fe, unsigned char *buf)
271{
272 struct tda9887_priv *priv = fe->analog_demod_priv;
273
274 static char *afc[16] = {
275 "- 12.5 kHz",
276 "- 37.5 kHz",
277 "- 62.5 kHz",
278 "- 87.5 kHz",
279 "-112.5 kHz",
280 "-137.5 kHz",
281 "-162.5 kHz",
282 "-187.5 kHz [min]",
283 "+187.5 kHz [max]",
284 "+162.5 kHz",
285 "+137.5 kHz",
286 "+112.5 kHz",
287 "+ 87.5 kHz",
288 "+ 62.5 kHz",
289 "+ 37.5 kHz",
290 "+ 12.5 kHz",
291 };
292 tuner_info("read: 0x%2x\n", buf[0]);
293 tuner_info(" after power on : %s\n", (buf[0] & 0x01) ? "yes" : "no");
294 tuner_info(" afc : %s\n", afc[(buf[0] >> 1) & 0x0f]);
295 tuner_info(" fmif level : %s\n", (buf[0] & 0x20) ? "high" : "low");
296 tuner_info(" afc window : %s\n", (buf[0] & 0x40) ? "in" : "out");
297 tuner_info(" vfi level : %s\n", (buf[0] & 0x80) ? "high" : "low");
298}
299
300static void dump_write_message(struct dvb_frontend *fe, unsigned char *buf)
301{
302 struct tda9887_priv *priv = fe->analog_demod_priv;
303
304 static char *sound[4] = {
305 "AM/TV",
306 "FM/radio",
307 "FM/TV",
308 "FM/radio"
309 };
310 static char *adjust[32] = {
311 "-16", "-15", "-14", "-13", "-12", "-11", "-10", "-9",
312 "-8", "-7", "-6", "-5", "-4", "-3", "-2", "-1",
313 "0", "+1", "+2", "+3", "+4", "+5", "+6", "+7",
314 "+8", "+9", "+10", "+11", "+12", "+13", "+14", "+15"
315 };
316 static char *deemph[4] = {
317 "no", "no", "75", "50"
318 };
319 static char *carrier[4] = {
320 "4.5 MHz",
321 "5.5 MHz",
322 "6.0 MHz",
323 "6.5 MHz / AM"
324 };
325 static char *vif[8] = {
326 "58.75 MHz",
327 "45.75 MHz",
328 "38.9 MHz",
329 "38.0 MHz",
330 "33.9 MHz",
331 "33.4 MHz",
332 "45.75 MHz + pin13",
333 "38.9 MHz + pin13",
334 };
335 static char *rif[4] = {
336 "44 MHz",
337 "52 MHz",
338 "52 MHz",
339 "44 MHz",
340 };
341
342 tuner_info("write: byte B 0x%02x\n", buf[1]);
343 tuner_info(" B0 video mode : %s\n",
344 (buf[1] & 0x01) ? "video trap" : "sound trap");
345 tuner_info(" B1 auto mute fm : %s\n",
346 (buf[1] & 0x02) ? "yes" : "no");
347 tuner_info(" B2 carrier mode : %s\n",
348 (buf[1] & 0x04) ? "QSS" : "Intercarrier");
349 tuner_info(" B3-4 tv sound/radio : %s\n",
350 sound[(buf[1] & 0x18) >> 3]);
351 tuner_info(" B5 force mute audio: %s\n",
352 (buf[1] & 0x20) ? "yes" : "no");
353 tuner_info(" B6 output port 1 : %s\n",
354 (buf[1] & 0x40) ? "high (inactive)" : "low (active)");
355 tuner_info(" B7 output port 2 : %s\n",
356 (buf[1] & 0x80) ? "high (inactive)" : "low (active)");
357
358 tuner_info("write: byte C 0x%02x\n", buf[2]);
359 tuner_info(" C0-4 top adjustment : %s dB\n",
360 adjust[buf[2] & 0x1f]);
361 tuner_info(" C5-6 de-emphasis : %s\n",
362 deemph[(buf[2] & 0x60) >> 5]);
363 tuner_info(" C7 audio gain : %s\n",
364 (buf[2] & 0x80) ? "-6" : "0");
365
366 tuner_info("write: byte E 0x%02x\n", buf[3]);
367 tuner_info(" E0-1 sound carrier : %s\n",
368 carrier[(buf[3] & 0x03)]);
369 tuner_info(" E6 l pll gating : %s\n",
370 (buf[3] & 0x40) ? "36" : "13");
371
372 if (buf[1] & 0x08) {
373 /* radio */
374 tuner_info(" E2-4 video if : %s\n",
375 rif[(buf[3] & 0x0c) >> 2]);
376 tuner_info(" E7 vif agc output : %s\n",
377 (buf[3] & 0x80)
378 ? ((buf[3] & 0x10) ? "fm-agc radio" :
379 "sif-agc radio")
380 : "fm radio carrier afc");
381 } else {
382 /* video */
383 tuner_info(" E2-4 video if : %s\n",
384 vif[(buf[3] & 0x1c) >> 2]);
385 tuner_info(" E5 tuner gain : %s\n",
386 (buf[3] & 0x80)
387 ? ((buf[3] & 0x20) ? "external" : "normal")
388 : ((buf[3] & 0x20) ? "minimum" : "normal"));
389 tuner_info(" E7 vif agc output : %s\n",
390 (buf[3] & 0x80) ? ((buf[3] & 0x20)
391 ? "pin3 port, pin22 vif agc out"
392 : "pin22 port, pin3 vif acg ext in")
393 : "pin3+pin22 port");
394 }
395 tuner_info("--\n");
396}
397
398/* ---------------------------------------------------------------------- */
399
400static int tda9887_set_tvnorm(struct dvb_frontend *fe)
401{
402 struct tda9887_priv *priv = fe->analog_demod_priv;
403 struct tvnorm *norm = NULL;
404 char *buf = priv->data;
405 int i;
406
407 if (priv->mode == V4L2_TUNER_RADIO) {
408 if (priv->audmode == V4L2_TUNER_MODE_MONO)
409 norm = &radio_mono;
410 else
411 norm = &radio_stereo;
412 } else {
413 for (i = 0; i < ARRAY_SIZE(tvnorms); i++) {
414 if (tvnorms[i].std & priv->std) {
415 norm = tvnorms+i;
416 break;
417 }
418 }
419 }
420 if (NULL == norm) {
421 tuner_dbg("Unsupported tvnorm entry - audio muted\n");
422 return -1;
423 }
424
425 tuner_dbg("configure for: %s\n", norm->name);
426 buf[1] = norm->b;
427 buf[2] = norm->c;
428 buf[3] = norm->e;
429 return 0;
430}
431
432static unsigned int port1 = UNSET;
433static unsigned int port2 = UNSET;
434static unsigned int qss = UNSET;
435static unsigned int adjust = UNSET;
436
437module_param(port1, int, 0644);
438module_param(port2, int, 0644);
439module_param(qss, int, 0644);
440module_param(adjust, int, 0644);
441
442static int tda9887_set_insmod(struct dvb_frontend *fe)
443{
444 struct tda9887_priv *priv = fe->analog_demod_priv;
445 char *buf = priv->data;
446
447 if (UNSET != port1) {
448 if (port1)
449 buf[1] |= cOutputPort1Inactive;
450 else
451 buf[1] &= ~cOutputPort1Inactive;
452 }
453 if (UNSET != port2) {
454 if (port2)
455 buf[1] |= cOutputPort2Inactive;
456 else
457 buf[1] &= ~cOutputPort2Inactive;
458 }
459
460 if (UNSET != qss) {
461 if (qss)
462 buf[1] |= cQSS;
463 else
464 buf[1] &= ~cQSS;
465 }
466
467 if (adjust >= 0x00 && adjust < 0x20) {
468 buf[2] &= ~cTopMask;
469 buf[2] |= adjust;
470 }
471 return 0;
472}
473
474static int tda9887_do_config(struct dvb_frontend *fe)
475{
476 struct tda9887_priv *priv = fe->analog_demod_priv;
477 char *buf = priv->data;
478
479 if (priv->config & TDA9887_PORT1_ACTIVE)
480 buf[1] &= ~cOutputPort1Inactive;
481 if (priv->config & TDA9887_PORT1_INACTIVE)
482 buf[1] |= cOutputPort1Inactive;
483 if (priv->config & TDA9887_PORT2_ACTIVE)
484 buf[1] &= ~cOutputPort2Inactive;
485 if (priv->config & TDA9887_PORT2_INACTIVE)
486 buf[1] |= cOutputPort2Inactive;
487
488 if (priv->config & TDA9887_QSS)
489 buf[1] |= cQSS;
490 if (priv->config & TDA9887_INTERCARRIER)
491 buf[1] &= ~cQSS;
492
493 if (priv->config & TDA9887_AUTOMUTE)
494 buf[1] |= cAutoMuteFmActive;
495 if (priv->config & TDA9887_DEEMPHASIS_MASK) {
496 buf[2] &= ~0x60;
497 switch (priv->config & TDA9887_DEEMPHASIS_MASK) {
498 case TDA9887_DEEMPHASIS_NONE:
499 buf[2] |= cDeemphasisOFF;
500 break;
501 case TDA9887_DEEMPHASIS_50:
502 buf[2] |= cDeemphasisON | cDeemphasis50;
503 break;
504 case TDA9887_DEEMPHASIS_75:
505 buf[2] |= cDeemphasisON | cDeemphasis75;
506 break;
507 }
508 }
509 if (priv->config & TDA9887_TOP_SET) {
510 buf[2] &= ~cTopMask;
511 buf[2] |= (priv->config >> 8) & cTopMask;
512 }
513 if ((priv->config & TDA9887_INTERCARRIER_NTSC) &&
514 (priv->std & V4L2_STD_NTSC))
515 buf[1] &= ~cQSS;
516 if (priv->config & TDA9887_GATING_18)
517 buf[3] &= ~cGating_36;
518
519 if (priv->mode == V4L2_TUNER_RADIO) {
520 if (priv->config & TDA9887_RIF_41_3) {
521 buf[3] &= ~cVideoIFMask;
522 buf[3] |= cRadioIF_41_30;
523 }
524 if (priv->config & TDA9887_GAIN_NORMAL)
525 buf[3] &= ~cTunerGainLow;
526 }
527
528 return 0;
529}
530
531/* ---------------------------------------------------------------------- */
532
533static int tda9887_status(struct dvb_frontend *fe)
534{
535 struct tda9887_priv *priv = fe->analog_demod_priv;
536 unsigned char buf[1];
537 int rc;
538
539 memset(buf,0,sizeof(buf));
540 if (1 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props,buf,1)))
541 tuner_info("i2c i/o error: rc == %d (should be 1)\n", rc);
542 dump_read_message(fe, buf);
543 return 0;
544}
545
546static void tda9887_configure(struct dvb_frontend *fe)
547{
548 struct tda9887_priv *priv = fe->analog_demod_priv;
549 int rc;
550
551 memset(priv->data,0,sizeof(priv->data));
552 tda9887_set_tvnorm(fe);
553
554 /* A note on the port settings:
555 These settings tend to depend on the specifics of the board.
556 By default they are set to inactive (bit value 1) by this driver,
557 overwriting any changes made by the tvnorm. This means that it
558 is the responsibility of the module using the tda9887 to set
559 these values in case of changes in the tvnorm.
560 In many cases port 2 should be made active (0) when selecting
561 SECAM-L, and port 2 should remain inactive (1) for SECAM-L'.
562
563 For the other standards the tda9887 application note says that
564 the ports should be set to active (0), but, again, that may
565 differ depending on the precise hardware configuration.
566 */
567 priv->data[1] |= cOutputPort1Inactive;
568 priv->data[1] |= cOutputPort2Inactive;
569
570 tda9887_do_config(fe);
571 tda9887_set_insmod(fe);
572
573 if (priv->mode == T_STANDBY)
574 priv->data[1] |= cForcedMuteAudioON;
575
576 tuner_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n",
577 priv->data[1], priv->data[2], priv->data[3]);
578 if (debug > 1)
579 dump_write_message(fe, priv->data);
580
581 if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,priv->data,4)))
582 tuner_info("i2c i/o error: rc == %d (should be 4)\n", rc);
583
584 if (debug > 2) {
585 msleep_interruptible(1000);
586 tda9887_status(fe);
587 }
588}
589
590/* ---------------------------------------------------------------------- */
591
592static void tda9887_tuner_status(struct dvb_frontend *fe)
593{
594 struct tda9887_priv *priv = fe->analog_demod_priv;
595 tuner_info("Data bytes: b=0x%02x c=0x%02x e=0x%02x\n",
596 priv->data[1], priv->data[2], priv->data[3]);
597}
598
599static int tda9887_get_afc(struct dvb_frontend *fe)
600{
601 struct tda9887_priv *priv = fe->analog_demod_priv;
602 static int AFC_BITS_2_kHz[] = {
603 -12500, -37500, -62500, -97500,
604 -112500, -137500, -162500, -187500,
605 187500, 162500, 137500, 112500,
606 97500 , 62500, 37500 , 12500
607 };
608 int afc=0;
609 __u8 reg = 0;
610
611 if (1 == tuner_i2c_xfer_recv(&priv->i2c_props,&reg,1))
612 afc = AFC_BITS_2_kHz[(reg>>1)&0x0f];
613
614 return afc;
615}
616
617static void tda9887_standby(struct dvb_frontend *fe)
618{
619 struct tda9887_priv *priv = fe->analog_demod_priv;
620
621 priv->mode = T_STANDBY;
622
623 tda9887_configure(fe);
624}
625
626static void tda9887_set_params(struct dvb_frontend *fe,
627 struct analog_parameters *params)
628{
629 struct tda9887_priv *priv = fe->analog_demod_priv;
630
631 priv->mode = params->mode;
632 priv->audmode = params->audmode;
633 priv->std = params->std;
634 tda9887_configure(fe);
635}
636
637static int tda9887_set_config(struct dvb_frontend *fe, void *priv_cfg)
638{
639 struct tda9887_priv *priv = fe->analog_demod_priv;
640
641 priv->config = *(unsigned int *)priv_cfg;
642 tda9887_configure(fe);
643
644 return 0;
645}
646
647static void tda9887_release(struct dvb_frontend *fe)
648{
649 struct tda9887_priv *priv = fe->analog_demod_priv;
650
651 mutex_lock(&tda9887_list_mutex);
652
653 if (priv)
654 hybrid_tuner_release_state(priv);
655
656 mutex_unlock(&tda9887_list_mutex);
657
658 fe->analog_demod_priv = NULL;
659}
660
661static struct analog_demod_ops tda9887_ops = {
662 .info = {
663 .name = "tda9887",
664 },
665 .set_params = tda9887_set_params,
666 .standby = tda9887_standby,
667 .tuner_status = tda9887_tuner_status,
668 .get_afc = tda9887_get_afc,
669 .release = tda9887_release,
670 .set_config = tda9887_set_config,
671};
672
673struct dvb_frontend *tda9887_attach(struct dvb_frontend *fe,
674 struct i2c_adapter *i2c_adap,
675 u8 i2c_addr)
676{
677 struct tda9887_priv *priv = NULL;
678 int instance;
679
680 mutex_lock(&tda9887_list_mutex);
681
682 instance = hybrid_tuner_request_state(struct tda9887_priv, priv,
683 hybrid_tuner_instance_list,
684 i2c_adap, i2c_addr, "tda9887");
685 switch (instance) {
686 case 0:
687 mutex_unlock(&tda9887_list_mutex);
688 return NULL;
689 break;
690 case 1:
691 fe->analog_demod_priv = priv;
692 priv->mode = T_STANDBY;
693 tuner_info("tda988[5/6/7] found\n");
694 break;
695 default:
696 fe->analog_demod_priv = priv;
697 break;
698 }
699
700 mutex_unlock(&tda9887_list_mutex);
701
702 memcpy(&fe->ops.analog_ops, &tda9887_ops,
703 sizeof(struct analog_demod_ops));
704
705 return fe;
706}
707EXPORT_SYMBOL_GPL(tda9887_attach);
708
709MODULE_LICENSE("GPL");
710
711/*
712 * Overrides for Emacs so that we follow Linus's tabbing style.
713 * ---------------------------------------------------------------------------
714 * Local variables:
715 * c-basic-offset: 8
716 * End:
717 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 05:23:56 -0500