1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * i2c tv tuner chip device driver
4  * controls all those simple 4-control-bytes style tuners.
5  *
6  * This "tuner-simple" module was split apart from the original "tuner" module.
7  */
8 #include <linux/delay.h>
9 #include <linux/i2c.h>
10 #include <linux/videodev2.h>
11 #include <media/tuner.h>
12 #include <media/v4l2-common.h>
13 #include <media/tuner-types.h>
14 #include "tuner-i2c.h"
15 #include "tuner-simple.h"
16 
17 static int debug;
18 module_param(debug, int, 0644);
19 MODULE_PARM_DESC(debug, "enable verbose debug messages");
20 
21 #define TUNER_SIMPLE_MAX 64
22 static unsigned int simple_devcount;
23 
24 static int offset;
25 module_param(offset, int, 0664);
26 MODULE_PARM_DESC(offset, "Allows to specify an offset for tuner");
27 
28 static unsigned int atv_input[TUNER_SIMPLE_MAX] = \
29 			{ [0 ... (TUNER_SIMPLE_MAX-1)] = 0 };
30 static unsigned int dtv_input[TUNER_SIMPLE_MAX] = \
31 			{ [0 ... (TUNER_SIMPLE_MAX-1)] = 0 };
32 module_param_array(atv_input, int, NULL, 0644);
33 module_param_array(dtv_input, int, NULL, 0644);
34 MODULE_PARM_DESC(atv_input, "specify atv rf input, 0 for autoselect");
35 MODULE_PARM_DESC(dtv_input, "specify dtv rf input, 0 for autoselect");
36 
37 /* ---------------------------------------------------------------------- */
38 
39 /* tv standard selection for Temic 4046 FM5
40    this value takes the low bits of control byte 2
41    from datasheet Rev.01, Feb.00
42      standard     BG      I       L       L2      D
43      picture IF   38.9    38.9    38.9    33.95   38.9
44      sound 1      33.4    32.9    32.4    40.45   32.4
45      sound 2      33.16
46      NICAM        33.05   32.348  33.05           33.05
47  */
48 #define TEMIC_SET_PAL_I         0x05
49 #define TEMIC_SET_PAL_DK        0x09
50 #define TEMIC_SET_PAL_L         0x0a /* SECAM ? */
51 #define TEMIC_SET_PAL_L2        0x0b /* change IF ! */
52 #define TEMIC_SET_PAL_BG        0x0c
53 
54 /* tv tuner system standard selection for Philips FQ1216ME
55    this value takes the low bits of control byte 2
56    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
57      standard		BG	DK	I	L	L`
58      picture carrier	38.90	38.90	38.90	38.90	33.95
59      colour		34.47	34.47	34.47	34.47	38.38
60      sound 1		33.40	32.40	32.90	32.40	40.45
61      sound 2		33.16	-	-	-	-
62      NICAM		33.05	33.05	32.35	33.05	39.80
63  */
64 #define PHILIPS_SET_PAL_I	0x01 /* Bit 2 always zero !*/
65 #define PHILIPS_SET_PAL_BGDK	0x09
66 #define PHILIPS_SET_PAL_L2	0x0a
67 #define PHILIPS_SET_PAL_L	0x0b
68 
69 /* system switching for Philips FI1216MF MK2
70    from datasheet "1996 Jul 09",
71     standard         BG     L      L'
72     picture carrier  38.90  38.90  33.95
73     colour	     34.47  34.37  38.38
74     sound 1          33.40  32.40  40.45
75     sound 2          33.16  -      -
76     NICAM            33.05  33.05  39.80
77  */
78 #define PHILIPS_MF_SET_STD_BG	0x01 /* Bit 2 must be zero, Bit 3 is system output */
79 #define PHILIPS_MF_SET_STD_L	0x03 /* Used on Secam France */
80 #define PHILIPS_MF_SET_STD_LC	0x02 /* Used on SECAM L' */
81 
82 /* Control byte */
83 
84 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
85 #define TUNER_RATIO_SELECT_50   0x00
86 #define TUNER_RATIO_SELECT_32   0x02
87 #define TUNER_RATIO_SELECT_166  0x04
88 #define TUNER_RATIO_SELECT_62   0x06
89 
90 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
91 
92 /* Status byte */
93 
94 #define TUNER_POR	  0x80
95 #define TUNER_FL          0x40
96 #define TUNER_MODE        0x38
97 #define TUNER_AFC         0x07
98 #define TUNER_SIGNAL      0x07
99 #define TUNER_STEREO      0x10
100 
101 #define TUNER_PLL_LOCKED   0x40
102 #define TUNER_STEREO_MK3   0x04
103 
104 static DEFINE_MUTEX(tuner_simple_list_mutex);
105 static LIST_HEAD(hybrid_tuner_instance_list);
106 
107 struct tuner_simple_priv {
108 	unsigned int nr;
109 	u16 last_div;
110 
111 	struct tuner_i2c_props i2c_props;
112 	struct list_head hybrid_tuner_instance_list;
113 
114 	unsigned int type;
115 	struct tunertype *tun;
116 
117 	u32 frequency;
118 	u32 bandwidth;
119 	bool radio_mode;
120 };
121 
122 /* ---------------------------------------------------------------------- */
123 
124 static int tuner_read_status(struct dvb_frontend *fe)
125 {
126 	struct tuner_simple_priv *priv = fe->tuner_priv;
127 	unsigned char byte;
128 
129 	if (1 != tuner_i2c_xfer_recv(&priv->i2c_props, &byte, 1))
130 		return 0;
131 
132 	return byte;
133 }
134 
135 static inline int tuner_signal(const int status)
136 {
137 	return (status & TUNER_SIGNAL) << 13;
138 }
139 
140 static inline int tuner_stereo(const int type, const int status)
141 {
142 	switch (type) {
143 	case TUNER_PHILIPS_FM1216ME_MK3:
144 	case TUNER_PHILIPS_FM1236_MK3:
145 	case TUNER_PHILIPS_FM1256_IH3:
146 	case TUNER_LG_NTSC_TAPE:
147 	case TUNER_TCL_MF02GIP_5N:
148 		return ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
149 	case TUNER_PHILIPS_FM1216MK5:
150 		return status | TUNER_STEREO;
151 	default:
152 		return status & TUNER_STEREO;
153 	}
154 }
155 
156 static inline int tuner_islocked(const int status)
157 {
158 	return (status & TUNER_FL);
159 }
160 
161 static inline int tuner_afcstatus(const int status)
162 {
163 	return (status & TUNER_AFC) - 2;
164 }
165 
166 
167 static int simple_get_status(struct dvb_frontend *fe, u32 *status)
168 {
169 	struct tuner_simple_priv *priv = fe->tuner_priv;
170 	int tuner_status;
171 
172 	if (priv->i2c_props.adap == NULL)
173 		return -EINVAL;
174 
175 	tuner_status = tuner_read_status(fe);
176 
177 	*status = 0;
178 
179 	if (tuner_islocked(tuner_status))
180 		*status = TUNER_STATUS_LOCKED;
181 	if (tuner_stereo(priv->type, tuner_status))
182 		*status |= TUNER_STATUS_STEREO;
183 
184 	tuner_dbg("AFC Status: %d\n", tuner_afcstatus(tuner_status));
185 
186 	return 0;
187 }
188 
189 static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
190 {
191 	struct tuner_simple_priv *priv = fe->tuner_priv;
192 	int signal;
193 
194 	if (priv->i2c_props.adap == NULL || !priv->radio_mode)
195 		return -EINVAL;
196 
197 	signal = tuner_signal(tuner_read_status(fe));
198 
199 	*strength = signal;
200 
201 	tuner_dbg("Signal strength: %d\n", signal);
202 
203 	return 0;
204 }
205 
206 /* ---------------------------------------------------------------------- */
207 
208 static inline char *tuner_param_name(enum param_type type)
209 {
210 	char *name;
211 
212 	switch (type) {
213 	case TUNER_PARAM_TYPE_RADIO:
214 		name = "radio";
215 		break;
216 	case TUNER_PARAM_TYPE_PAL:
217 		name = "pal";
218 		break;
219 	case TUNER_PARAM_TYPE_SECAM:
220 		name = "secam";
221 		break;
222 	case TUNER_PARAM_TYPE_NTSC:
223 		name = "ntsc";
224 		break;
225 	case TUNER_PARAM_TYPE_DIGITAL:
226 		name = "digital";
227 		break;
228 	default:
229 		name = "unknown";
230 		break;
231 	}
232 	return name;
233 }
234 
235 static struct tuner_params *simple_tuner_params(struct dvb_frontend *fe,
236 						enum param_type desired_type)
237 {
238 	struct tuner_simple_priv *priv = fe->tuner_priv;
239 	struct tunertype *tun = priv->tun;
240 	int i;
241 
242 	for (i = 0; i < tun->count; i++)
243 		if (desired_type == tun->params[i].type)
244 			break;
245 
246 	/* use default tuner params if desired_type not available */
247 	if (i == tun->count) {
248 		tuner_dbg("desired params (%s) undefined for tuner %d\n",
249 			  tuner_param_name(desired_type), priv->type);
250 		i = 0;
251 	}
252 
253 	tuner_dbg("using tuner params #%d (%s)\n", i,
254 		  tuner_param_name(tun->params[i].type));
255 
256 	return &tun->params[i];
257 }
258 
259 static int simple_config_lookup(struct dvb_frontend *fe,
260 				struct tuner_params *t_params,
261 				unsigned *frequency, u8 *config, u8 *cb)
262 {
263 	struct tuner_simple_priv *priv = fe->tuner_priv;
264 	int i;
265 
266 	for (i = 0; i < t_params->count; i++) {
267 		if (*frequency > t_params->ranges[i].limit)
268 			continue;
269 		break;
270 	}
271 	if (i == t_params->count) {
272 		tuner_dbg("frequency out of range (%d > %d)\n",
273 			  *frequency, t_params->ranges[i - 1].limit);
274 		*frequency = t_params->ranges[--i].limit;
275 	}
276 	*config = t_params->ranges[i].config;
277 	*cb     = t_params->ranges[i].cb;
278 
279 	tuner_dbg("freq = %d.%02d (%d), range = %d, config = 0x%02x, cb = 0x%02x\n",
280 		  *frequency / 16, *frequency % 16 * 100 / 16, *frequency,
281 		  i, *config, *cb);
282 
283 	return i;
284 }
285 
286 /* ---------------------------------------------------------------------- */
287 
288 static void simple_set_rf_input(struct dvb_frontend *fe,
289 				u8 *config, u8 *cb, unsigned int rf)
290 {
291 	struct tuner_simple_priv *priv = fe->tuner_priv;
292 
293 	switch (priv->type) {
294 	case TUNER_PHILIPS_TUV1236D:
295 		switch (rf) {
296 		case 1:
297 			*cb |= 0x08;
298 			break;
299 		default:
300 			*cb &= ~0x08;
301 			break;
302 		}
303 		break;
304 	case TUNER_PHILIPS_FCV1236D:
305 		switch (rf) {
306 		case 1:
307 			*cb |= 0x01;
308 			break;
309 		default:
310 			*cb &= ~0x01;
311 			break;
312 		}
313 		break;
314 	default:
315 		break;
316 	}
317 }
318 
319 static int simple_std_setup(struct dvb_frontend *fe,
320 			    struct analog_parameters *params,
321 			    u8 *config, u8 *cb)
322 {
323 	struct tuner_simple_priv *priv = fe->tuner_priv;
324 	int rc;
325 
326 	/* tv norm specific stuff for multi-norm tuners */
327 	switch (priv->type) {
328 	case TUNER_PHILIPS_SECAM: /* FI1216MF */
329 		/* 0x01 -> ??? no change ??? */
330 		/* 0x02 -> PAL BDGHI / SECAM L */
331 		/* 0x04 -> ??? PAL others / SECAM others ??? */
332 		*cb &= ~0x03;
333 		if (params->std & V4L2_STD_SECAM_L)
334 			/* also valid for V4L2_STD_SECAM */
335 			*cb |= PHILIPS_MF_SET_STD_L;
336 		else if (params->std & V4L2_STD_SECAM_LC)
337 			*cb |= PHILIPS_MF_SET_STD_LC;
338 		else /* V4L2_STD_B|V4L2_STD_GH */
339 			*cb |= PHILIPS_MF_SET_STD_BG;
340 		break;
341 
342 	case TUNER_TEMIC_4046FM5:
343 		*cb &= ~0x0f;
344 
345 		if (params->std & V4L2_STD_PAL_BG) {
346 			*cb |= TEMIC_SET_PAL_BG;
347 
348 		} else if (params->std & V4L2_STD_PAL_I) {
349 			*cb |= TEMIC_SET_PAL_I;
350 
351 		} else if (params->std & V4L2_STD_PAL_DK) {
352 			*cb |= TEMIC_SET_PAL_DK;
353 
354 		} else if (params->std & V4L2_STD_SECAM_L) {
355 			*cb |= TEMIC_SET_PAL_L;
356 
357 		}
358 		break;
359 
360 	case TUNER_PHILIPS_FQ1216ME:
361 		*cb &= ~0x0f;
362 
363 		if (params->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
364 			*cb |= PHILIPS_SET_PAL_BGDK;
365 
366 		} else if (params->std & V4L2_STD_PAL_I) {
367 			*cb |= PHILIPS_SET_PAL_I;
368 
369 		} else if (params->std & V4L2_STD_SECAM_L) {
370 			*cb |= PHILIPS_SET_PAL_L;
371 
372 		}
373 		break;
374 
375 	case TUNER_PHILIPS_FCV1236D:
376 		/* 0x00 -> ATSC antenna input 1 */
377 		/* 0x01 -> ATSC antenna input 2 */
378 		/* 0x02 -> NTSC antenna input 1 */
379 		/* 0x03 -> NTSC antenna input 2 */
380 		*cb &= ~0x03;
381 		if (!(params->std & V4L2_STD_ATSC))
382 			*cb |= 2;
383 		break;
384 
385 	case TUNER_MICROTUNE_4042FI5:
386 		/* Set the charge pump for fast tuning */
387 		*config |= TUNER_CHARGE_PUMP;
388 		break;
389 
390 	case TUNER_PHILIPS_TUV1236D:
391 	{
392 		struct tuner_i2c_props i2c = priv->i2c_props;
393 		/* 0x40 -> ATSC antenna input 1 */
394 		/* 0x48 -> ATSC antenna input 2 */
395 		/* 0x00 -> NTSC antenna input 1 */
396 		/* 0x08 -> NTSC antenna input 2 */
397 		u8 buffer[4] = { 0x14, 0x00, 0x17, 0x00};
398 		*cb &= ~0x40;
399 		if (params->std & V4L2_STD_ATSC) {
400 			*cb |= 0x40;
401 			buffer[1] = 0x04;
402 		}
403 		/* set to the correct mode (analog or digital) */
404 		i2c.addr = 0x0a;
405 		rc = tuner_i2c_xfer_send(&i2c, &buffer[0], 2);
406 		if (2 != rc)
407 			tuner_warn("i2c i/o error: rc == %d (should be 2)\n",
408 				   rc);
409 		rc = tuner_i2c_xfer_send(&i2c, &buffer[2], 2);
410 		if (2 != rc)
411 			tuner_warn("i2c i/o error: rc == %d (should be 2)\n",
412 				   rc);
413 		break;
414 	}
415 	}
416 	if (atv_input[priv->nr])
417 		simple_set_rf_input(fe, config, cb, atv_input[priv->nr]);
418 
419 	return 0;
420 }
421 
422 static int simple_set_aux_byte(struct dvb_frontend *fe, u8 config, u8 aux)
423 {
424 	struct tuner_simple_priv *priv = fe->tuner_priv;
425 	int rc;
426 	u8 buffer[2];
427 
428 	buffer[0] = (config & ~0x38) | 0x18;
429 	buffer[1] = aux;
430 
431 	tuner_dbg("setting aux byte: 0x%02x 0x%02x\n", buffer[0], buffer[1]);
432 
433 	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 2);
434 	if (2 != rc)
435 		tuner_warn("i2c i/o error: rc == %d (should be 2)\n", rc);
436 
437 	return rc == 2 ? 0 : rc;
438 }
439 
440 static int simple_post_tune(struct dvb_frontend *fe, u8 *buffer,
441 			    u16 div, u8 config, u8 cb)
442 {
443 	struct tuner_simple_priv *priv = fe->tuner_priv;
444 	int rc;
445 
446 	switch (priv->type) {
447 	case TUNER_LG_TDVS_H06XF:
448 		simple_set_aux_byte(fe, config, 0x20);
449 		break;
450 	case TUNER_PHILIPS_FQ1216LME_MK3:
451 		simple_set_aux_byte(fe, config, 0x60); /* External AGC */
452 		break;
453 	case TUNER_MICROTUNE_4042FI5:
454 	{
455 		/* FIXME - this may also work for other tuners */
456 		unsigned long timeout = jiffies + msecs_to_jiffies(1);
457 		u8 status_byte = 0;
458 
459 		/* Wait until the PLL locks */
460 		for (;;) {
461 			if (time_after(jiffies, timeout))
462 				return 0;
463 			rc = tuner_i2c_xfer_recv(&priv->i2c_props,
464 						 &status_byte, 1);
465 			if (1 != rc) {
466 				tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",
467 					   rc);
468 				break;
469 			}
470 			if (status_byte & TUNER_PLL_LOCKED)
471 				break;
472 			udelay(10);
473 		}
474 
475 		/* Set the charge pump for optimized phase noise figure */
476 		config &= ~TUNER_CHARGE_PUMP;
477 		buffer[0] = (div>>8) & 0x7f;
478 		buffer[1] = div      & 0xff;
479 		buffer[2] = config;
480 		buffer[3] = cb;
481 		tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
482 			  buffer[0], buffer[1], buffer[2], buffer[3]);
483 
484 		rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
485 		if (4 != rc)
486 			tuner_warn("i2c i/o error: rc == %d (should be 4)\n",
487 				   rc);
488 		break;
489 	}
490 	}
491 
492 	return 0;
493 }
494 
495 static int simple_radio_bandswitch(struct dvb_frontend *fe, u8 *buffer)
496 {
497 	struct tuner_simple_priv *priv = fe->tuner_priv;
498 
499 	switch (priv->type) {
500 	case TUNER_TENA_9533_DI:
501 	case TUNER_YMEC_TVF_5533MF:
502 		tuner_dbg("This tuner doesn't have FM. Most cards have a TEA5767 for FM\n");
503 		return 0;
504 	case TUNER_PHILIPS_FM1216ME_MK3:
505 	case TUNER_PHILIPS_FM1236_MK3:
506 	case TUNER_PHILIPS_FMD1216ME_MK3:
507 	case TUNER_PHILIPS_FMD1216MEX_MK3:
508 	case TUNER_LG_NTSC_TAPE:
509 	case TUNER_PHILIPS_FM1256_IH3:
510 	case TUNER_TCL_MF02GIP_5N:
511 		buffer[3] = 0x19;
512 		break;
513 	case TUNER_PHILIPS_FM1216MK5:
514 		buffer[2] = 0x88;
515 		buffer[3] = 0x09;
516 		break;
517 	case TUNER_TNF_5335MF:
518 		buffer[3] = 0x11;
519 		break;
520 	case TUNER_LG_PAL_FM:
521 		buffer[3] = 0xa5;
522 		break;
523 	case TUNER_THOMSON_DTT761X:
524 		buffer[3] = 0x39;
525 		break;
526 	case TUNER_PHILIPS_FQ1216LME_MK3:
527 	case TUNER_PHILIPS_FQ1236_MK5:
528 		tuner_err("This tuner doesn't have FM\n");
529 		/* Set the low band for sanity, since it covers 88-108 MHz */
530 		buffer[3] = 0x01;
531 		break;
532 	case TUNER_MICROTUNE_4049FM5:
533 	default:
534 		buffer[3] = 0xa4;
535 		break;
536 	}
537 
538 	return 0;
539 }
540 
541 /* ---------------------------------------------------------------------- */
542 
543 static int simple_set_tv_freq(struct dvb_frontend *fe,
544 			      struct analog_parameters *params)
545 {
546 	struct tuner_simple_priv *priv = fe->tuner_priv;
547 	u8 config, cb;
548 	u16 div;
549 	u8 buffer[4];
550 	int rc, IFPCoff, i;
551 	enum param_type desired_type;
552 	struct tuner_params *t_params;
553 
554 	/* IFPCoff = Video Intermediate Frequency - Vif:
555 		940  =16*58.75  NTSC/J (Japan)
556 		732  =16*45.75  M/N STD
557 		704  =16*44     ATSC (at DVB code)
558 		632  =16*39.50  I U.K.
559 		622.4=16*38.90  B/G D/K I, L STD
560 		592  =16*37.00  D China
561 		590  =16.36.875 B Australia
562 		543.2=16*33.95  L' STD
563 		171.2=16*10.70  FM Radio (at set_radio_freq)
564 	*/
565 
566 	if (params->std == V4L2_STD_NTSC_M_JP) {
567 		IFPCoff      = 940;
568 		desired_type = TUNER_PARAM_TYPE_NTSC;
569 	} else if ((params->std & V4L2_STD_MN) &&
570 		  !(params->std & ~V4L2_STD_MN)) {
571 		IFPCoff      = 732;
572 		desired_type = TUNER_PARAM_TYPE_NTSC;
573 	} else if (params->std == V4L2_STD_SECAM_LC) {
574 		IFPCoff      = 543;
575 		desired_type = TUNER_PARAM_TYPE_SECAM;
576 	} else {
577 		IFPCoff      = 623;
578 		desired_type = TUNER_PARAM_TYPE_PAL;
579 	}
580 
581 	t_params = simple_tuner_params(fe, desired_type);
582 
583 	i = simple_config_lookup(fe, t_params, &params->frequency,
584 				 &config, &cb);
585 
586 	div = params->frequency + IFPCoff + offset;
587 
588 	tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
589 		  params->frequency / 16, params->frequency % 16 * 100 / 16,
590 		  IFPCoff / 16, IFPCoff % 16 * 100 / 16,
591 		  offset / 16, offset % 16 * 100 / 16, div);
592 
593 	/* tv norm specific stuff for multi-norm tuners */
594 	simple_std_setup(fe, params, &config, &cb);
595 
596 	if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
597 		buffer[0] = config;
598 		buffer[1] = cb;
599 		buffer[2] = (div>>8) & 0x7f;
600 		buffer[3] = div      & 0xff;
601 	} else {
602 		buffer[0] = (div>>8) & 0x7f;
603 		buffer[1] = div      & 0xff;
604 		buffer[2] = config;
605 		buffer[3] = cb;
606 	}
607 	priv->last_div = div;
608 	if (t_params->has_tda9887) {
609 		struct v4l2_priv_tun_config tda9887_cfg;
610 		int tda_config = 0;
611 		int is_secam_l = (params->std & (V4L2_STD_SECAM_L |
612 						 V4L2_STD_SECAM_LC)) &&
613 			!(params->std & ~(V4L2_STD_SECAM_L |
614 					  V4L2_STD_SECAM_LC));
615 
616 		tda9887_cfg.tuner = TUNER_TDA9887;
617 		tda9887_cfg.priv  = &tda_config;
618 
619 		if (params->std == V4L2_STD_SECAM_LC) {
620 			if (t_params->port1_active ^ t_params->port1_invert_for_secam_lc)
621 				tda_config |= TDA9887_PORT1_ACTIVE;
622 			if (t_params->port2_active ^ t_params->port2_invert_for_secam_lc)
623 				tda_config |= TDA9887_PORT2_ACTIVE;
624 		} else {
625 			if (t_params->port1_active)
626 				tda_config |= TDA9887_PORT1_ACTIVE;
627 			if (t_params->port2_active)
628 				tda_config |= TDA9887_PORT2_ACTIVE;
629 		}
630 		if (t_params->intercarrier_mode)
631 			tda_config |= TDA9887_INTERCARRIER;
632 		if (is_secam_l) {
633 			if (i == 0 && t_params->default_top_secam_low)
634 				tda_config |= TDA9887_TOP(t_params->default_top_secam_low);
635 			else if (i == 1 && t_params->default_top_secam_mid)
636 				tda_config |= TDA9887_TOP(t_params->default_top_secam_mid);
637 			else if (t_params->default_top_secam_high)
638 				tda_config |= TDA9887_TOP(t_params->default_top_secam_high);
639 		} else {
640 			if (i == 0 && t_params->default_top_low)
641 				tda_config |= TDA9887_TOP(t_params->default_top_low);
642 			else if (i == 1 && t_params->default_top_mid)
643 				tda_config |= TDA9887_TOP(t_params->default_top_mid);
644 			else if (t_params->default_top_high)
645 				tda_config |= TDA9887_TOP(t_params->default_top_high);
646 		}
647 		if (t_params->default_pll_gating_18)
648 			tda_config |= TDA9887_GATING_18;
649 		i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
650 				    &tda9887_cfg);
651 	}
652 	tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
653 		  buffer[0], buffer[1], buffer[2], buffer[3]);
654 
655 	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
656 	if (4 != rc)
657 		tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
658 
659 	simple_post_tune(fe, &buffer[0], div, config, cb);
660 
661 	return 0;
662 }
663 
664 static int simple_set_radio_freq(struct dvb_frontend *fe,
665 				 struct analog_parameters *params)
666 {
667 	struct tunertype *tun;
668 	struct tuner_simple_priv *priv = fe->tuner_priv;
669 	u8 buffer[4];
670 	u16 div;
671 	int rc, j;
672 	struct tuner_params *t_params;
673 	unsigned int freq = params->frequency;
674 	bool mono = params->audmode == V4L2_TUNER_MODE_MONO;
675 
676 	tun = priv->tun;
677 
678 	for (j = tun->count-1; j > 0; j--)
679 		if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
680 			break;
681 	/* default t_params (j=0) will be used if desired type wasn't found */
682 	t_params = &tun->params[j];
683 
684 	/* Select Radio 1st IF used */
685 	switch (t_params->radio_if) {
686 	case 0: /* 10.7 MHz */
687 		freq += (unsigned int)(10.7*16000);
688 		break;
689 	case 1: /* 33.3 MHz */
690 		freq += (unsigned int)(33.3*16000);
691 		break;
692 	case 2: /* 41.3 MHz */
693 		freq += (unsigned int)(41.3*16000);
694 		break;
695 	default:
696 		tuner_warn("Unsupported radio_if value %d\n",
697 			   t_params->radio_if);
698 		return 0;
699 	}
700 
701 	buffer[2] = (t_params->ranges[0].config & ~TUNER_RATIO_MASK) |
702 		    TUNER_RATIO_SELECT_50; /* 50 kHz step */
703 
704 	/* Bandswitch byte */
705 	simple_radio_bandswitch(fe, &buffer[0]);
706 
707 	/* Convert from 1/16 kHz V4L steps to 1/20 MHz (=50 kHz) PLL steps
708 	   freq * (1 Mhz / 16000 V4L steps) * (20 PLL steps / 1 MHz) =
709 	   freq * (1/800) */
710 	div = (freq + 400) / 800;
711 
712 	if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
713 		buffer[0] = buffer[2];
714 		buffer[1] = buffer[3];
715 		buffer[2] = (div>>8) & 0x7f;
716 		buffer[3] = div      & 0xff;
717 	} else {
718 		buffer[0] = (div>>8) & 0x7f;
719 		buffer[1] = div      & 0xff;
720 	}
721 
722 	tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
723 	       buffer[0], buffer[1], buffer[2], buffer[3]);
724 	priv->last_div = div;
725 
726 	if (t_params->has_tda9887) {
727 		int config = 0;
728 		struct v4l2_priv_tun_config tda9887_cfg;
729 
730 		tda9887_cfg.tuner = TUNER_TDA9887;
731 		tda9887_cfg.priv = &config;
732 
733 		if (t_params->port1_active &&
734 		    !t_params->port1_fm_high_sensitivity)
735 			config |= TDA9887_PORT1_ACTIVE;
736 		if (t_params->port2_active &&
737 		    !t_params->port2_fm_high_sensitivity)
738 			config |= TDA9887_PORT2_ACTIVE;
739 		if (t_params->intercarrier_mode)
740 			config |= TDA9887_INTERCARRIER;
741 		if (t_params->port1_set_for_fm_mono && mono)
742 			config &= ~TDA9887_PORT1_ACTIVE;
743 		if (t_params->fm_gain_normal)
744 			config |= TDA9887_GAIN_NORMAL;
745 		if (t_params->radio_if == 2)
746 			config |= TDA9887_RIF_41_3;
747 		i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
748 				    &tda9887_cfg);
749 	}
750 	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
751 	if (4 != rc)
752 		tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
753 
754 	/* Write AUX byte */
755 	switch (priv->type) {
756 	case TUNER_PHILIPS_FM1216ME_MK3:
757 		buffer[2] = 0x98;
758 		buffer[3] = 0x20; /* set TOP AGC */
759 		rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
760 		if (4 != rc)
761 			tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
762 		break;
763 	}
764 
765 	return 0;
766 }
767 
768 static int simple_set_params(struct dvb_frontend *fe,
769 			     struct analog_parameters *params)
770 {
771 	struct tuner_simple_priv *priv = fe->tuner_priv;
772 	int ret = -EINVAL;
773 
774 	if (priv->i2c_props.adap == NULL)
775 		return -EINVAL;
776 
777 	switch (params->mode) {
778 	case V4L2_TUNER_RADIO:
779 		priv->radio_mode = true;
780 		ret = simple_set_radio_freq(fe, params);
781 		priv->frequency = params->frequency * 125 / 2;
782 		break;
783 	case V4L2_TUNER_ANALOG_TV:
784 	case V4L2_TUNER_DIGITAL_TV:
785 		priv->radio_mode = false;
786 		ret = simple_set_tv_freq(fe, params);
787 		priv->frequency = params->frequency * 62500;
788 		break;
789 	}
790 	priv->bandwidth = 0;
791 
792 	return ret;
793 }
794 
795 static void simple_set_dvb(struct dvb_frontend *fe, u8 *buf,
796 			   const u32 delsys,
797 			   const u32 frequency,
798 			   const u32 bandwidth)
799 {
800 	struct tuner_simple_priv *priv = fe->tuner_priv;
801 
802 	switch (priv->type) {
803 	case TUNER_PHILIPS_FMD1216ME_MK3:
804 	case TUNER_PHILIPS_FMD1216MEX_MK3:
805 		if (bandwidth == 8000000 &&
806 		    frequency >= 158870000)
807 			buf[3] |= 0x08;
808 		break;
809 	case TUNER_PHILIPS_TD1316:
810 		/* determine band */
811 		buf[3] |= (frequency < 161000000) ? 1 :
812 			  (frequency < 444000000) ? 2 : 4;
813 
814 		/* setup PLL filter */
815 		if (bandwidth == 8000000)
816 			buf[3] |= 1 << 3;
817 		break;
818 	case TUNER_PHILIPS_TUV1236D:
819 	case TUNER_PHILIPS_FCV1236D:
820 	{
821 		unsigned int new_rf;
822 
823 		if (dtv_input[priv->nr])
824 			new_rf = dtv_input[priv->nr];
825 		else
826 			switch (delsys) {
827 			case SYS_DVBC_ANNEX_B:
828 				new_rf = 1;
829 				break;
830 			case SYS_ATSC:
831 			default:
832 				new_rf = 0;
833 				break;
834 			}
835 		simple_set_rf_input(fe, &buf[2], &buf[3], new_rf);
836 		break;
837 	}
838 	default:
839 		break;
840 	}
841 }
842 
843 static u32 simple_dvb_configure(struct dvb_frontend *fe, u8 *buf,
844 				const u32 delsys,
845 				const u32 freq,
846 				const u32 bw)
847 {
848 	/* This function returns the tuned frequency on success, 0 on error */
849 	struct tuner_simple_priv *priv = fe->tuner_priv;
850 	struct tunertype *tun = priv->tun;
851 	struct tuner_params *t_params;
852 	u8 config, cb;
853 	u32 div;
854 	int ret;
855 	u32 frequency = freq / 62500;
856 
857 	if (!tun->stepsize) {
858 		/* tuner-core was loaded before the digital tuner was
859 		 * configured and somehow picked the wrong tuner type */
860 		tuner_err("attempt to treat tuner %d (%s) as digital tuner without stepsize defined.\n",
861 			  priv->type, priv->tun->name);
862 		return 0; /* failure */
863 	}
864 
865 	t_params = simple_tuner_params(fe, TUNER_PARAM_TYPE_DIGITAL);
866 	ret = simple_config_lookup(fe, t_params, &frequency, &config, &cb);
867 	if (ret < 0)
868 		return 0; /* failure */
869 
870 	div = ((frequency + t_params->iffreq) * 62500 + offset +
871 	       tun->stepsize/2) / tun->stepsize;
872 
873 	buf[0] = div >> 8;
874 	buf[1] = div & 0xff;
875 	buf[2] = config;
876 	buf[3] = cb;
877 
878 	simple_set_dvb(fe, buf, delsys, freq, bw);
879 
880 	tuner_dbg("%s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
881 		  tun->name, div, buf[0], buf[1], buf[2], buf[3]);
882 
883 	/* calculate the frequency we set it to */
884 	return (div * tun->stepsize) - t_params->iffreq;
885 }
886 
887 static int simple_dvb_calc_regs(struct dvb_frontend *fe,
888 				u8 *buf, int buf_len)
889 {
890 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
891 	u32 delsys = c->delivery_system;
892 	u32 bw = c->bandwidth_hz;
893 	struct tuner_simple_priv *priv = fe->tuner_priv;
894 	u32 frequency;
895 
896 	if (buf_len < 5)
897 		return -EINVAL;
898 
899 	frequency = simple_dvb_configure(fe, buf+1, delsys, c->frequency, bw);
900 	if (frequency == 0)
901 		return -EINVAL;
902 
903 	buf[0] = priv->i2c_props.addr;
904 
905 	priv->frequency = frequency;
906 	priv->bandwidth = c->bandwidth_hz;
907 
908 	return 5;
909 }
910 
911 static int simple_dvb_set_params(struct dvb_frontend *fe)
912 {
913 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
914 	u32 delsys = c->delivery_system;
915 	u32 bw = c->bandwidth_hz;
916 	u32 freq = c->frequency;
917 	struct tuner_simple_priv *priv = fe->tuner_priv;
918 	u32 frequency;
919 	u32 prev_freq, prev_bw;
920 	int ret;
921 	u8 buf[5];
922 
923 	if (priv->i2c_props.adap == NULL)
924 		return -EINVAL;
925 
926 	prev_freq = priv->frequency;
927 	prev_bw   = priv->bandwidth;
928 
929 	frequency = simple_dvb_configure(fe, buf+1, delsys, freq, bw);
930 	if (frequency == 0)
931 		return -EINVAL;
932 
933 	buf[0] = priv->i2c_props.addr;
934 
935 	priv->frequency = frequency;
936 	priv->bandwidth = bw;
937 
938 	/* put analog demod in standby when tuning digital */
939 	if (fe->ops.analog_ops.standby)
940 		fe->ops.analog_ops.standby(fe);
941 
942 	if (fe->ops.i2c_gate_ctrl)
943 		fe->ops.i2c_gate_ctrl(fe, 1);
944 
945 	/* buf[0] contains the i2c address, but *
946 	 * we already have it in i2c_props.addr */
947 	ret = tuner_i2c_xfer_send(&priv->i2c_props, buf+1, 4);
948 	if (ret != 4)
949 		goto fail;
950 
951 	return 0;
952 fail:
953 	/* calc_regs sets frequency and bandwidth. if we failed, unset them */
954 	priv->frequency = prev_freq;
955 	priv->bandwidth = prev_bw;
956 
957 	return ret;
958 }
959 
960 static int simple_init(struct dvb_frontend *fe)
961 {
962 	struct tuner_simple_priv *priv = fe->tuner_priv;
963 
964 	if (priv->i2c_props.adap == NULL)
965 		return -EINVAL;
966 
967 	if (priv->tun->initdata) {
968 		int ret;
969 
970 		if (fe->ops.i2c_gate_ctrl)
971 			fe->ops.i2c_gate_ctrl(fe, 1);
972 
973 		ret = tuner_i2c_xfer_send(&priv->i2c_props,
974 					  priv->tun->initdata + 1,
975 					  priv->tun->initdata[0]);
976 		if (ret != priv->tun->initdata[0])
977 			return ret;
978 	}
979 
980 	return 0;
981 }
982 
983 static int simple_sleep(struct dvb_frontend *fe)
984 {
985 	struct tuner_simple_priv *priv = fe->tuner_priv;
986 
987 	if (priv->i2c_props.adap == NULL)
988 		return -EINVAL;
989 
990 	if (priv->tun->sleepdata) {
991 		int ret;
992 
993 		if (fe->ops.i2c_gate_ctrl)
994 			fe->ops.i2c_gate_ctrl(fe, 1);
995 
996 		ret = tuner_i2c_xfer_send(&priv->i2c_props,
997 					  priv->tun->sleepdata + 1,
998 					  priv->tun->sleepdata[0]);
999 		if (ret != priv->tun->sleepdata[0])
1000 			return ret;
1001 	}
1002 
1003 	return 0;
1004 }
1005 
1006 static void simple_release(struct dvb_frontend *fe)
1007 {
1008 	struct tuner_simple_priv *priv = fe->tuner_priv;
1009 
1010 	mutex_lock(&tuner_simple_list_mutex);
1011 
1012 	if (priv)
1013 		hybrid_tuner_release_state(priv);
1014 
1015 	mutex_unlock(&tuner_simple_list_mutex);
1016 
1017 	fe->tuner_priv = NULL;
1018 }
1019 
1020 static int simple_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1021 {
1022 	struct tuner_simple_priv *priv = fe->tuner_priv;
1023 	*frequency = priv->frequency;
1024 	return 0;
1025 }
1026 
1027 static int simple_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1028 {
1029 	struct tuner_simple_priv *priv = fe->tuner_priv;
1030 	*bandwidth = priv->bandwidth;
1031 	return 0;
1032 }
1033 
1034 static const struct dvb_tuner_ops simple_tuner_ops = {
1035 	.init              = simple_init,
1036 	.sleep             = simple_sleep,
1037 	.set_analog_params = simple_set_params,
1038 	.set_params        = simple_dvb_set_params,
1039 	.calc_regs         = simple_dvb_calc_regs,
1040 	.release           = simple_release,
1041 	.get_frequency     = simple_get_frequency,
1042 	.get_bandwidth     = simple_get_bandwidth,
1043 	.get_status        = simple_get_status,
1044 	.get_rf_strength   = simple_get_rf_strength,
1045 };
1046 
1047 struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
1048 					 struct i2c_adapter *i2c_adap,
1049 					 u8 i2c_addr,
1050 					 unsigned int type)
1051 {
1052 	struct tuner_simple_priv *priv = NULL;
1053 	int instance;
1054 
1055 	if (type >= tuner_count) {
1056 		printk(KERN_WARNING "%s: invalid tuner type: %d (max: %d)\n",
1057 		       __func__, type, tuner_count-1);
1058 		return NULL;
1059 	}
1060 
1061 	/* If i2c_adap is set, check that the tuner is at the correct address.
1062 	 * Otherwise, if i2c_adap is NULL, the tuner will be programmed directly
1063 	 * by the digital demod via calc_regs.
1064 	 */
1065 	if (i2c_adap != NULL) {
1066 		u8 b[1];
1067 		struct i2c_msg msg = {
1068 			.addr = i2c_addr, .flags = I2C_M_RD,
1069 			.buf = b, .len = 1,
1070 		};
1071 
1072 		if (fe->ops.i2c_gate_ctrl)
1073 			fe->ops.i2c_gate_ctrl(fe, 1);
1074 
1075 		if (1 != i2c_transfer(i2c_adap, &msg, 1))
1076 			printk(KERN_WARNING "tuner-simple %d-%04x: unable to probe %s, proceeding anyway.",
1077 			       i2c_adapter_id(i2c_adap), i2c_addr,
1078 			       tuners[type].name);
1079 
1080 		if (fe->ops.i2c_gate_ctrl)
1081 			fe->ops.i2c_gate_ctrl(fe, 0);
1082 	}
1083 
1084 	mutex_lock(&tuner_simple_list_mutex);
1085 
1086 	instance = hybrid_tuner_request_state(struct tuner_simple_priv, priv,
1087 					      hybrid_tuner_instance_list,
1088 					      i2c_adap, i2c_addr,
1089 					      "tuner-simple");
1090 	switch (instance) {
1091 	case 0:
1092 		mutex_unlock(&tuner_simple_list_mutex);
1093 		return NULL;
1094 	case 1:
1095 		fe->tuner_priv = priv;
1096 
1097 		priv->type = type;
1098 		priv->tun  = &tuners[type];
1099 		priv->nr   = simple_devcount++;
1100 		break;
1101 	default:
1102 		fe->tuner_priv = priv;
1103 		break;
1104 	}
1105 
1106 	mutex_unlock(&tuner_simple_list_mutex);
1107 
1108 	memcpy(&fe->ops.tuner_ops, &simple_tuner_ops,
1109 	       sizeof(struct dvb_tuner_ops));
1110 
1111 	if (type != priv->type)
1112 		tuner_warn("couldn't set type to %d. Using %d (%s) instead\n",
1113 			    type, priv->type, priv->tun->name);
1114 	else
1115 		tuner_info("type set to %d (%s)\n",
1116 			   priv->type, priv->tun->name);
1117 
1118 	if ((debug) || ((atv_input[priv->nr] > 0) ||
1119 			(dtv_input[priv->nr] > 0))) {
1120 		if (0 == atv_input[priv->nr])
1121 			tuner_info("tuner %d atv rf input will be autoselected\n",
1122 				   priv->nr);
1123 		else
1124 			tuner_info("tuner %d atv rf input will be set to input %d (insmod option)\n",
1125 				   priv->nr, atv_input[priv->nr]);
1126 		if (0 == dtv_input[priv->nr])
1127 			tuner_info("tuner %d dtv rf input will be autoselected\n",
1128 				   priv->nr);
1129 		else
1130 			tuner_info("tuner %d dtv rf input will be set to input %d (insmod option)\n",
1131 				   priv->nr, dtv_input[priv->nr]);
1132 	}
1133 
1134 	strscpy(fe->ops.tuner_ops.info.name, priv->tun->name,
1135 		sizeof(fe->ops.tuner_ops.info.name));
1136 
1137 	return fe;
1138 }
1139 EXPORT_SYMBOL_GPL(simple_tuner_attach);
1140 
1141 MODULE_DESCRIPTION("Simple 4-control-bytes style tuner driver");
1142 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
1143 MODULE_LICENSE("GPL");
1144