xref: /openbmc/linux/drivers/media/tuners/tda9887.c (revision 09c434b8)
1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/module.h>
3 #include <linux/kernel.h>
4 #include <linux/i2c.h>
5 #include <linux/types.h>
6 #include <linux/init.h>
7 #include <linux/errno.h>
8 #include <linux/delay.h>
9 #include <linux/videodev2.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 
24 static int debug;
25 module_param(debug, int, 0644);
26 MODULE_PARM_DESC(debug, "enable verbose debug messages");
27 
28 static DEFINE_MUTEX(tda9887_list_mutex);
29 static LIST_HEAD(hybrid_tuner_instance_list);
30 
31 struct 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 	bool               standby;
42 };
43 
44 /* ---------------------------------------------------------------------- */
45 
46 #define UNSET       (-1U)
47 
48 struct tvnorm {
49 	v4l2_std_id       std;
50 	char              *name;
51 	unsigned char     b;
52 	unsigned char     c;
53 	unsigned char     e;
54 };
55 
56 /* ---------------------------------------------------------------------- */
57 
58 //
59 // TDA defines
60 //
61 
62 //// first reg (b)
63 #define cVideoTrapBypassOFF     0x00    // bit b0
64 #define cVideoTrapBypassON      0x01    // bit b0
65 
66 #define cAutoMuteFmInactive     0x00    // bit b1
67 #define cAutoMuteFmActive       0x02    // bit b1
68 
69 #define cIntercarrier           0x00    // bit b2
70 #define cQSS                    0x04    // bit b2
71 
72 #define cPositiveAmTV           0x00    // bit b3:4
73 #define cFmRadio                0x08    // bit b3:4
74 #define cNegativeFmTV           0x10    // bit b3:4
75 
76 
77 #define cForcedMuteAudioON      0x20    // bit b5
78 #define cForcedMuteAudioOFF     0x00    // bit b5
79 
80 #define cOutputPort1Active      0x00    // bit b6
81 #define cOutputPort1Inactive    0x40    // bit b6
82 
83 #define cOutputPort2Active      0x00    // bit b7
84 #define cOutputPort2Inactive    0x80    // bit b7
85 
86 
87 //// second reg (c)
88 #define cDeemphasisOFF          0x00    // bit c5
89 #define cDeemphasisON           0x20    // bit c5
90 
91 #define cDeemphasis75           0x00    // bit c6
92 #define cDeemphasis50           0x40    // bit c6
93 
94 #define cAudioGain0             0x00    // bit c7
95 #define cAudioGain6             0x80    // bit c7
96 
97 #define cTopMask                0x1f    // bit c0:4
98 #define cTopDefault		0x10	// bit c0:4
99 
100 //// third reg (e)
101 #define cAudioIF_4_5             0x00    // bit e0:1
102 #define cAudioIF_5_5             0x01    // bit e0:1
103 #define cAudioIF_6_0             0x02    // bit e0:1
104 #define cAudioIF_6_5             0x03    // bit e0:1
105 
106 
107 #define cVideoIFMask		0x1c	// bit e2:4
108 /* Video IF selection in TV Mode (bit B3=0) */
109 #define cVideoIF_58_75           0x00    // bit e2:4
110 #define cVideoIF_45_75           0x04    // bit e2:4
111 #define cVideoIF_38_90           0x08    // bit e2:4
112 #define cVideoIF_38_00           0x0C    // bit e2:4
113 #define cVideoIF_33_90           0x10    // bit e2:4
114 #define cVideoIF_33_40           0x14    // bit e2:4
115 #define cRadioIF_45_75           0x18    // bit e2:4
116 #define cRadioIF_38_90           0x1C    // bit e2:4
117 
118 /* IF1 selection in Radio Mode (bit B3=1) */
119 #define cRadioIF_33_30		0x00	// bit e2,4 (also 0x10,0x14)
120 #define cRadioIF_41_30		0x04	// bit e2,4
121 
122 /* Output of AFC pin in radio mode when bit E7=1 */
123 #define cRadioAGC_SIF		0x00	// bit e3
124 #define cRadioAGC_FM		0x08	// bit e3
125 
126 #define cTunerGainNormal         0x00    // bit e5
127 #define cTunerGainLow            0x20    // bit e5
128 
129 #define cGating_18               0x00    // bit e6
130 #define cGating_36               0x40    // bit e6
131 
132 #define cAgcOutON                0x80    // bit e7
133 #define cAgcOutOFF               0x00    // bit e7
134 
135 /* ---------------------------------------------------------------------- */
136 
137 static struct tvnorm tvnorms[] = {
138 	{
139 		.std   = V4L2_STD_PAL_BG | V4L2_STD_PAL_H | V4L2_STD_PAL_N,
140 		.name  = "PAL-BGHN",
141 		.b     = ( cNegativeFmTV  |
142 			   cQSS           ),
143 		.c     = ( cDeemphasisON  |
144 			   cDeemphasis50  |
145 			   cTopDefault),
146 		.e     = ( cGating_36     |
147 			   cAudioIF_5_5   |
148 			   cVideoIF_38_90 ),
149 	},{
150 		.std   = V4L2_STD_PAL_I,
151 		.name  = "PAL-I",
152 		.b     = ( cNegativeFmTV  |
153 			   cQSS           ),
154 		.c     = ( cDeemphasisON  |
155 			   cDeemphasis50  |
156 			   cTopDefault),
157 		.e     = ( cGating_36     |
158 			   cAudioIF_6_0   |
159 			   cVideoIF_38_90 ),
160 	},{
161 		.std   = V4L2_STD_PAL_DK,
162 		.name  = "PAL-DK",
163 		.b     = ( cNegativeFmTV  |
164 			   cQSS           ),
165 		.c     = ( cDeemphasisON  |
166 			   cDeemphasis50  |
167 			   cTopDefault),
168 		.e     = ( cGating_36     |
169 			   cAudioIF_6_5   |
170 			   cVideoIF_38_90 ),
171 	},{
172 		.std   = V4L2_STD_PAL_M | V4L2_STD_PAL_Nc,
173 		.name  = "PAL-M/Nc",
174 		.b     = ( cNegativeFmTV  |
175 			   cQSS           ),
176 		.c     = ( cDeemphasisON  |
177 			   cDeemphasis75  |
178 			   cTopDefault),
179 		.e     = ( cGating_36     |
180 			   cAudioIF_4_5   |
181 			   cVideoIF_45_75 ),
182 	},{
183 		.std   = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
184 		.name  = "SECAM-BGH",
185 		.b     = ( cNegativeFmTV  |
186 			   cQSS           ),
187 		.c     = ( cTopDefault),
188 		.e     = ( cAudioIF_5_5   |
189 			   cVideoIF_38_90 ),
190 	},{
191 		.std   = V4L2_STD_SECAM_L,
192 		.name  = "SECAM-L",
193 		.b     = ( cPositiveAmTV  |
194 			   cQSS           ),
195 		.c     = ( cTopDefault),
196 		.e     = ( cGating_36	  |
197 			   cAudioIF_6_5   |
198 			   cVideoIF_38_90 ),
199 	},{
200 		.std   = V4L2_STD_SECAM_LC,
201 		.name  = "SECAM-L'",
202 		.b     = ( cOutputPort2Inactive |
203 			   cPositiveAmTV  |
204 			   cQSS           ),
205 		.c     = ( cTopDefault),
206 		.e     = ( cGating_36	  |
207 			   cAudioIF_6_5   |
208 			   cVideoIF_33_90 ),
209 	},{
210 		.std   = V4L2_STD_SECAM_DK,
211 		.name  = "SECAM-DK",
212 		.b     = ( cNegativeFmTV  |
213 			   cQSS           ),
214 		.c     = ( cDeemphasisON  |
215 			   cDeemphasis50  |
216 			   cTopDefault),
217 		.e     = ( cGating_36     |
218 			   cAudioIF_6_5   |
219 			   cVideoIF_38_90 ),
220 	},{
221 		.std   = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR,
222 		.name  = "NTSC-M",
223 		.b     = ( cNegativeFmTV  |
224 			   cQSS           ),
225 		.c     = ( cDeemphasisON  |
226 			   cDeemphasis75  |
227 			   cTopDefault),
228 		.e     = ( cGating_36     |
229 			   cAudioIF_4_5   |
230 			   cVideoIF_45_75 ),
231 	},{
232 		.std   = V4L2_STD_NTSC_M_JP,
233 		.name  = "NTSC-M-JP",
234 		.b     = ( cNegativeFmTV  |
235 			   cQSS           ),
236 		.c     = ( cDeemphasisON  |
237 			   cDeemphasis50  |
238 			   cTopDefault),
239 		.e     = ( cGating_36     |
240 			   cAudioIF_4_5   |
241 			   cVideoIF_58_75 ),
242 	}
243 };
244 
245 static struct tvnorm radio_stereo = {
246 	.name = "Radio Stereo",
247 	.b    = ( cFmRadio       |
248 		  cQSS           ),
249 	.c    = ( cDeemphasisOFF |
250 		  cAudioGain6    |
251 		  cTopDefault),
252 	.e    = ( cTunerGainLow  |
253 		  cAudioIF_5_5   |
254 		  cRadioIF_38_90 ),
255 };
256 
257 static struct tvnorm radio_mono = {
258 	.name = "Radio Mono",
259 	.b    = ( cFmRadio       |
260 		  cQSS           ),
261 	.c    = ( cDeemphasisON  |
262 		  cDeemphasis75  |
263 		  cTopDefault),
264 	.e    = ( cTunerGainLow  |
265 		  cAudioIF_5_5   |
266 		  cRadioIF_38_90 ),
267 };
268 
269 /* ---------------------------------------------------------------------- */
270 
dump_read_message(struct dvb_frontend * fe,unsigned char * buf)271 static void dump_read_message(struct dvb_frontend *fe, unsigned char *buf)
272 {
273 	struct tda9887_priv *priv = fe->analog_demod_priv;
274 
275 	static char *afc[16] = {
276 		"- 12.5 kHz",
277 		"- 37.5 kHz",
278 		"- 62.5 kHz",
279 		"- 87.5 kHz",
280 		"-112.5 kHz",
281 		"-137.5 kHz",
282 		"-162.5 kHz",
283 		"-187.5 kHz [min]",
284 		"+187.5 kHz [max]",
285 		"+162.5 kHz",
286 		"+137.5 kHz",
287 		"+112.5 kHz",
288 		"+ 87.5 kHz",
289 		"+ 62.5 kHz",
290 		"+ 37.5 kHz",
291 		"+ 12.5 kHz",
292 	};
293 	tuner_info("read: 0x%2x\n", buf[0]);
294 	tuner_info("  after power on : %s\n", (buf[0] & 0x01) ? "yes" : "no");
295 	tuner_info("  afc            : %s\n", afc[(buf[0] >> 1) & 0x0f]);
296 	tuner_info("  fmif level     : %s\n", (buf[0] & 0x20) ? "high" : "low");
297 	tuner_info("  afc window     : %s\n", (buf[0] & 0x40) ? "in" : "out");
298 	tuner_info("  vfi level      : %s\n", (buf[0] & 0x80) ? "high" : "low");
299 }
300 
dump_write_message(struct dvb_frontend * fe,unsigned char * buf)301 static void dump_write_message(struct dvb_frontend *fe, unsigned char *buf)
302 {
303 	struct tda9887_priv *priv = fe->analog_demod_priv;
304 
305 	static char *sound[4] = {
306 		"AM/TV",
307 		"FM/radio",
308 		"FM/TV",
309 		"FM/radio"
310 	};
311 	static char *adjust[32] = {
312 		"-16", "-15", "-14", "-13", "-12", "-11", "-10", "-9",
313 		"-8",  "-7",  "-6",  "-5",  "-4",  "-3",  "-2",  "-1",
314 		"0",   "+1",  "+2",  "+3",  "+4",  "+5",  "+6",  "+7",
315 		"+8",  "+9",  "+10", "+11", "+12", "+13", "+14", "+15"
316 	};
317 	static char *deemph[4] = {
318 		"no", "no", "75", "50"
319 	};
320 	static char *carrier[4] = {
321 		"4.5 MHz",
322 		"5.5 MHz",
323 		"6.0 MHz",
324 		"6.5 MHz / AM"
325 	};
326 	static char *vif[8] = {
327 		"58.75 MHz",
328 		"45.75 MHz",
329 		"38.9 MHz",
330 		"38.0 MHz",
331 		"33.9 MHz",
332 		"33.4 MHz",
333 		"45.75 MHz + pin13",
334 		"38.9 MHz + pin13",
335 	};
336 	static char *rif[4] = {
337 		"44 MHz",
338 		"52 MHz",
339 		"52 MHz",
340 		"44 MHz",
341 	};
342 
343 	tuner_info("write: byte B 0x%02x\n", buf[1]);
344 	tuner_info("  B0   video mode      : %s\n",
345 		   (buf[1] & 0x01) ? "video trap" : "sound trap");
346 	tuner_info("  B1   auto mute fm    : %s\n",
347 		   (buf[1] & 0x02) ? "yes" : "no");
348 	tuner_info("  B2   carrier mode    : %s\n",
349 		   (buf[1] & 0x04) ? "QSS" : "Intercarrier");
350 	tuner_info("  B3-4 tv sound/radio  : %s\n",
351 		   sound[(buf[1] & 0x18) >> 3]);
352 	tuner_info("  B5   force mute audio: %s\n",
353 		   (buf[1] & 0x20) ? "yes" : "no");
354 	tuner_info("  B6   output port 1   : %s\n",
355 		   (buf[1] & 0x40) ? "high (inactive)" : "low (active)");
356 	tuner_info("  B7   output port 2   : %s\n",
357 		   (buf[1] & 0x80) ? "high (inactive)" : "low (active)");
358 
359 	tuner_info("write: byte C 0x%02x\n", buf[2]);
360 	tuner_info("  C0-4 top adjustment  : %s dB\n",
361 		   adjust[buf[2] & 0x1f]);
362 	tuner_info("  C5-6 de-emphasis     : %s\n",
363 		   deemph[(buf[2] & 0x60) >> 5]);
364 	tuner_info("  C7   audio gain      : %s\n",
365 		   (buf[2] & 0x80) ? "-6" : "0");
366 
367 	tuner_info("write: byte E 0x%02x\n", buf[3]);
368 	tuner_info("  E0-1 sound carrier   : %s\n",
369 		   carrier[(buf[3] & 0x03)]);
370 	tuner_info("  E6   l pll gating   : %s\n",
371 		   (buf[3] & 0x40) ? "36" : "13");
372 
373 	if (buf[1] & 0x08) {
374 		/* radio */
375 		tuner_info("  E2-4 video if        : %s\n",
376 			   rif[(buf[3] & 0x0c) >> 2]);
377 		tuner_info("  E7   vif agc output  : %s\n",
378 			   (buf[3] & 0x80)
379 			   ? ((buf[3] & 0x10) ? "fm-agc radio" :
380 						"sif-agc radio")
381 			   : "fm radio carrier afc");
382 	} else {
383 		/* video */
384 		tuner_info("  E2-4 video if        : %s\n",
385 			   vif[(buf[3] & 0x1c) >> 2]);
386 		tuner_info("  E5   tuner gain      : %s\n",
387 			   (buf[3] & 0x80)
388 			   ? ((buf[3] & 0x20) ? "external" : "normal")
389 			   : ((buf[3] & 0x20) ? "minimum"  : "normal"));
390 		tuner_info("  E7   vif agc output  : %s\n",
391 			   (buf[3] & 0x80) ? ((buf[3] & 0x20)
392 				? "pin3 port, pin22 vif agc out"
393 				: "pin22 port, pin3 vif acg ext in")
394 				: "pin3+pin22 port");
395 	}
396 	tuner_info("--\n");
397 }
398 
399 /* ---------------------------------------------------------------------- */
400 
tda9887_set_tvnorm(struct dvb_frontend * fe)401 static int tda9887_set_tvnorm(struct dvb_frontend *fe)
402 {
403 	struct tda9887_priv *priv = fe->analog_demod_priv;
404 	struct tvnorm *norm = NULL;
405 	char *buf = priv->data;
406 	int i;
407 
408 	if (priv->mode == V4L2_TUNER_RADIO) {
409 		if (priv->audmode == V4L2_TUNER_MODE_MONO)
410 			norm = &radio_mono;
411 		else
412 			norm = &radio_stereo;
413 	} else {
414 		for (i = 0; i < ARRAY_SIZE(tvnorms); i++) {
415 			if (tvnorms[i].std & priv->std) {
416 				norm = tvnorms+i;
417 				break;
418 			}
419 		}
420 	}
421 	if (NULL == norm) {
422 		tuner_dbg("Unsupported tvnorm entry - audio muted\n");
423 		return -1;
424 	}
425 
426 	tuner_dbg("configure for: %s\n", norm->name);
427 	buf[1] = norm->b;
428 	buf[2] = norm->c;
429 	buf[3] = norm->e;
430 	return 0;
431 }
432 
433 static unsigned int port1  = UNSET;
434 static unsigned int port2  = UNSET;
435 static unsigned int qss    = UNSET;
436 static unsigned int adjust = UNSET;
437 
438 module_param(port1, int, 0644);
439 module_param(port2, int, 0644);
440 module_param(qss, int, 0644);
441 module_param(adjust, int, 0644);
442 
tda9887_set_insmod(struct dvb_frontend * fe)443 static int tda9887_set_insmod(struct dvb_frontend *fe)
444 {
445 	struct tda9887_priv *priv = fe->analog_demod_priv;
446 	char *buf = priv->data;
447 
448 	if (UNSET != port1) {
449 		if (port1)
450 			buf[1] |= cOutputPort1Inactive;
451 		else
452 			buf[1] &= ~cOutputPort1Inactive;
453 	}
454 	if (UNSET != port2) {
455 		if (port2)
456 			buf[1] |= cOutputPort2Inactive;
457 		else
458 			buf[1] &= ~cOutputPort2Inactive;
459 	}
460 
461 	if (UNSET != qss) {
462 		if (qss)
463 			buf[1] |= cQSS;
464 		else
465 			buf[1] &= ~cQSS;
466 	}
467 
468 	if (adjust < 0x20) {
469 		buf[2] &= ~cTopMask;
470 		buf[2] |= adjust;
471 	}
472 	return 0;
473 }
474 
tda9887_do_config(struct dvb_frontend * fe)475 static int tda9887_do_config(struct dvb_frontend *fe)
476 {
477 	struct tda9887_priv *priv = fe->analog_demod_priv;
478 	char *buf = priv->data;
479 
480 	if (priv->config & TDA9887_PORT1_ACTIVE)
481 		buf[1] &= ~cOutputPort1Inactive;
482 	if (priv->config & TDA9887_PORT1_INACTIVE)
483 		buf[1] |= cOutputPort1Inactive;
484 	if (priv->config & TDA9887_PORT2_ACTIVE)
485 		buf[1] &= ~cOutputPort2Inactive;
486 	if (priv->config & TDA9887_PORT2_INACTIVE)
487 		buf[1] |= cOutputPort2Inactive;
488 
489 	if (priv->config & TDA9887_QSS)
490 		buf[1] |= cQSS;
491 	if (priv->config & TDA9887_INTERCARRIER)
492 		buf[1] &= ~cQSS;
493 
494 	if (priv->config & TDA9887_AUTOMUTE)
495 		buf[1] |= cAutoMuteFmActive;
496 	if (priv->config & TDA9887_DEEMPHASIS_MASK) {
497 		buf[2] &= ~0x60;
498 		switch (priv->config & TDA9887_DEEMPHASIS_MASK) {
499 		case TDA9887_DEEMPHASIS_NONE:
500 			buf[2] |= cDeemphasisOFF;
501 			break;
502 		case TDA9887_DEEMPHASIS_50:
503 			buf[2] |= cDeemphasisON | cDeemphasis50;
504 			break;
505 		case TDA9887_DEEMPHASIS_75:
506 			buf[2] |= cDeemphasisON | cDeemphasis75;
507 			break;
508 		}
509 	}
510 	if (priv->config & TDA9887_TOP_SET) {
511 		buf[2] &= ~cTopMask;
512 		buf[2] |= (priv->config >> 8) & cTopMask;
513 	}
514 	if ((priv->config & TDA9887_INTERCARRIER_NTSC) &&
515 	    (priv->std & V4L2_STD_NTSC))
516 		buf[1] &= ~cQSS;
517 	if (priv->config & TDA9887_GATING_18)
518 		buf[3] &= ~cGating_36;
519 
520 	if (priv->mode == V4L2_TUNER_RADIO) {
521 		if (priv->config & TDA9887_RIF_41_3) {
522 			buf[3] &= ~cVideoIFMask;
523 			buf[3] |= cRadioIF_41_30;
524 		}
525 		if (priv->config & TDA9887_GAIN_NORMAL)
526 			buf[3] &= ~cTunerGainLow;
527 	}
528 
529 	return 0;
530 }
531 
532 /* ---------------------------------------------------------------------- */
533 
tda9887_status(struct dvb_frontend * fe)534 static int tda9887_status(struct dvb_frontend *fe)
535 {
536 	struct tda9887_priv *priv = fe->analog_demod_priv;
537 	unsigned char buf[1];
538 	int rc;
539 
540 	rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, 1);
541 	if (rc != 1)
542 		tuner_info("i2c i/o error: rc == %d (should be 1)\n", rc);
543 	dump_read_message(fe, buf);
544 	return 0;
545 }
546 
tda9887_configure(struct dvb_frontend * fe)547 static void tda9887_configure(struct dvb_frontend *fe)
548 {
549 	struct tda9887_priv *priv = fe->analog_demod_priv;
550 	int rc;
551 
552 	memset(priv->data,0,sizeof(priv->data));
553 	tda9887_set_tvnorm(fe);
554 
555 	/* A note on the port settings:
556 	   These settings tend to depend on the specifics of the board.
557 	   By default they are set to inactive (bit value 1) by this driver,
558 	   overwriting any changes made by the tvnorm. This means that it
559 	   is the responsibility of the module using the tda9887 to set
560 	   these values in case of changes in the tvnorm.
561 	   In many cases port 2 should be made active (0) when selecting
562 	   SECAM-L, and port 2 should remain inactive (1) for SECAM-L'.
563 
564 	   For the other standards the tda9887 application note says that
565 	   the ports should be set to active (0), but, again, that may
566 	   differ depending on the precise hardware configuration.
567 	 */
568 	priv->data[1] |= cOutputPort1Inactive;
569 	priv->data[1] |= cOutputPort2Inactive;
570 
571 	tda9887_do_config(fe);
572 	tda9887_set_insmod(fe);
573 
574 	if (priv->standby)
575 		priv->data[1] |= cForcedMuteAudioON;
576 
577 	tuner_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n",
578 		  priv->data[1], priv->data[2], priv->data[3]);
579 	if (debug > 1)
580 		dump_write_message(fe, priv->data);
581 
582 	if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,priv->data,4)))
583 		tuner_info("i2c i/o error: rc == %d (should be 4)\n", rc);
584 
585 	if (debug > 2) {
586 		msleep_interruptible(1000);
587 		tda9887_status(fe);
588 	}
589 }
590 
591 /* ---------------------------------------------------------------------- */
592 
tda9887_tuner_status(struct dvb_frontend * fe)593 static void tda9887_tuner_status(struct dvb_frontend *fe)
594 {
595 	struct tda9887_priv *priv = fe->analog_demod_priv;
596 	tuner_info("Data bytes: b=0x%02x c=0x%02x e=0x%02x\n",
597 		   priv->data[1], priv->data[2], priv->data[3]);
598 }
599 
tda9887_get_afc(struct dvb_frontend * fe,s32 * afc)600 static int tda9887_get_afc(struct dvb_frontend *fe, s32 *afc)
601 {
602 	struct tda9887_priv *priv = fe->analog_demod_priv;
603 	static const int AFC_BITS_2_kHz[] = {
604 		-12500,  -37500,  -62500,  -97500,
605 		-112500, -137500, -162500, -187500,
606 		187500,  162500,  137500,  112500,
607 		97500 ,  62500,   37500 ,  12500
608 	};
609 	__u8 reg = 0;
610 
611 	if (priv->mode != V4L2_TUNER_RADIO)
612 		return 0;
613 	if (1 == tuner_i2c_xfer_recv(&priv->i2c_props, &reg, 1))
614 		*afc = AFC_BITS_2_kHz[(reg >> 1) & 0x0f];
615 	return 0;
616 }
617 
tda9887_standby(struct dvb_frontend * fe)618 static void tda9887_standby(struct dvb_frontend *fe)
619 {
620 	struct tda9887_priv *priv = fe->analog_demod_priv;
621 
622 	priv->standby = true;
623 
624 	tda9887_configure(fe);
625 }
626 
tda9887_set_params(struct dvb_frontend * fe,struct analog_parameters * params)627 static void tda9887_set_params(struct dvb_frontend *fe,
628 			       struct analog_parameters *params)
629 {
630 	struct tda9887_priv *priv = fe->analog_demod_priv;
631 
632 	priv->standby = false;
633 	priv->mode    = params->mode;
634 	priv->audmode = params->audmode;
635 	priv->std     = params->std;
636 	tda9887_configure(fe);
637 }
638 
tda9887_set_config(struct dvb_frontend * fe,void * priv_cfg)639 static int tda9887_set_config(struct dvb_frontend *fe, void *priv_cfg)
640 {
641 	struct tda9887_priv *priv = fe->analog_demod_priv;
642 
643 	priv->config = *(unsigned int *)priv_cfg;
644 	tda9887_configure(fe);
645 
646 	return 0;
647 }
648 
tda9887_release(struct dvb_frontend * fe)649 static void tda9887_release(struct dvb_frontend *fe)
650 {
651 	struct tda9887_priv *priv = fe->analog_demod_priv;
652 
653 	mutex_lock(&tda9887_list_mutex);
654 
655 	if (priv)
656 		hybrid_tuner_release_state(priv);
657 
658 	mutex_unlock(&tda9887_list_mutex);
659 
660 	fe->analog_demod_priv = NULL;
661 }
662 
663 static const struct analog_demod_ops tda9887_ops = {
664 	.info		= {
665 		.name	= "tda9887",
666 	},
667 	.set_params     = tda9887_set_params,
668 	.standby        = tda9887_standby,
669 	.tuner_status   = tda9887_tuner_status,
670 	.get_afc        = tda9887_get_afc,
671 	.release        = tda9887_release,
672 	.set_config     = tda9887_set_config,
673 };
674 
tda9887_attach(struct dvb_frontend * fe,struct i2c_adapter * i2c_adap,u8 i2c_addr)675 struct dvb_frontend *tda9887_attach(struct dvb_frontend *fe,
676 				    struct i2c_adapter *i2c_adap,
677 				    u8 i2c_addr)
678 {
679 	struct tda9887_priv *priv = NULL;
680 	int instance;
681 
682 	mutex_lock(&tda9887_list_mutex);
683 
684 	instance = hybrid_tuner_request_state(struct tda9887_priv, priv,
685 					      hybrid_tuner_instance_list,
686 					      i2c_adap, i2c_addr, "tda9887");
687 	switch (instance) {
688 	case 0:
689 		mutex_unlock(&tda9887_list_mutex);
690 		return NULL;
691 	case 1:
692 		fe->analog_demod_priv = priv;
693 		priv->standby = true;
694 		tuner_info("tda988[5/6/7] found\n");
695 		break;
696 	default:
697 		fe->analog_demod_priv = priv;
698 		break;
699 	}
700 
701 	mutex_unlock(&tda9887_list_mutex);
702 
703 	memcpy(&fe->ops.analog_ops, &tda9887_ops,
704 	       sizeof(struct analog_demod_ops));
705 
706 	return fe;
707 }
708 EXPORT_SYMBOL_GPL(tda9887_attach);
709 
710 MODULE_LICENSE("GPL");
711