aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/tuner-core.c
blob: ae76113886fdd828726424d6431617f52bd2b473 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
/*
 *
 * i2c tv tuner chip device driver
 * core core, i.e. kernel interfaces, registering and so on
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/i2c.h>
#include <linux/types.h>
#include <linux/videodev.h>
#include <linux/init.h>

#include <media/tuner.h>
#include <media/audiochip.h>

#include "msp3400.h"

#define UNSET (-1U)

/* standard i2c insmod options */
static unsigned short normal_i2c[] = {
	0x42, 0x43, 0x4a, 0x4b,			/* tda8290 */
	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
	I2C_CLIENT_END
};

I2C_CLIENT_INSMOD;

/* insmod options used at init time => read/only */
static unsigned int addr = 0;
module_param(addr, int, 0444);

static unsigned int no_autodetect = 0;
module_param(no_autodetect, int, 0444);

static unsigned int show_i2c = 0;
module_param(show_i2c, int, 0444);

/* insmod options used at runtime => read/write */
unsigned int tuner_debug = 0;
module_param(tuner_debug, int, 0644);

static unsigned int tv_range[2] = { 44, 958 };
static unsigned int radio_range[2] = { 65, 108 };

module_param_array(tv_range, int, NULL, 0644);
module_param_array(radio_range, int, NULL, 0644);

MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
MODULE_LICENSE("GPL");

static struct i2c_driver driver;
static struct i2c_client client_template;

/* ---------------------------------------------------------------------- */

/* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
static void set_tv_freq(struct i2c_client *c, unsigned int freq)
{
	struct tuner *t = i2c_get_clientdata(c);

	if (t->type == UNSET) {
		tuner_warn ("tuner type not set\n");
		return;
	}
	if (NULL == t->tv_freq) {
		tuner_warn ("Tuner has no way to set tv freq\n");
		return;
	}
	if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
		tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
			   freq / 16, freq % 16 * 100 / 16, tv_range[0],
			   tv_range[1]);
	}
	t->tv_freq(c, freq);
}

static void set_radio_freq(struct i2c_client *c, unsigned int freq)
{
	struct tuner *t = i2c_get_clientdata(c);

	if (t->type == UNSET) {
		tuner_warn ("tuner type not set\n");
		return;
	}
	if (NULL == t->radio_freq) {
		tuner_warn ("tuner has no way to set radio frequency\n");
		return;
	}
	if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) {
		tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
			   freq / 16000, freq % 16000 * 100 / 16000,
			   radio_range[0], radio_range[1]);
	}

	t->radio_freq(c, freq);
	return;
}

static void set_freq(struct i2c_client *c, unsigned long freq)
{
	struct tuner *t = i2c_get_clientdata(c);

	switch (t->mode) {
	case V4L2_TUNER_RADIO:
		tuner_dbg("radio freq set to %lu.%02lu\n",
			  freq / 16000, freq % 16000 * 100 / 16000);
		set_radio_freq(c, freq);
		break;
	case V4L2_TUNER_ANALOG_TV:
	case V4L2_TUNER_DIGITAL_TV:
		tuner_dbg("tv freq set to %lu.%02lu\n",
			  freq / 16, freq % 16 * 100 / 16);
		set_tv_freq(c, freq);
		break;
	}
	t->freq = freq;
}

static void set_type(struct i2c_client *c, unsigned int type,
		     unsigned int new_mode_mask)
{
	struct tuner *t = i2c_get_clientdata(c);
	unsigned char buffer[4];

	if (type == UNSET || type == TUNER_ABSENT) {
		tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
		return;
	}

	if (type >= tuner_count) {
		tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
		return;
	}

	/* This code detects calls by card attach_inform */
	if (NULL == t->i2c.dev.driver) {
		tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);

		t->type=type;
		return;
	}

	t->type = type;

	switch (t->type) {
	case TUNER_MT2032:
		microtune_init(c);
		break;
	case TUNER_PHILIPS_TDA8290:
		tda8290_init(c);
		break;
	case TUNER_TEA5767:
		if (tea5767_tuner_init(c) == EINVAL) {
			t->type = TUNER_ABSENT;
			t->mode_mask = T_UNINITIALIZED;
			return;
		}
		t->mode_mask = T_RADIO;
		break;
	case TUNER_PHILIPS_FMD1216ME_MK3:
		buffer[0] = 0x0b;
		buffer[1] = 0xdc;
		buffer[2] = 0x9c;
		buffer[3] = 0x60;
		i2c_master_send(c, buffer, 4);
		mdelay(1);
		buffer[2] = 0x86;
		buffer[3] = 0x54;
		i2c_master_send(c, buffer, 4);
		default_tuner_init(c);
		break;
	case TUNER_LG_TDVS_H062F:
		/* Set the Auxiliary Byte. */
		buffer[2] &= ~0x20;
		buffer[2] |= 0x18;
		buffer[3] = 0x20;
		i2c_master_send(c, buffer, 4);
		default_tuner_init(c);
		break;
	case TUNER_PHILIPS_TD1316:
		buffer[0] = 0x0b;
		buffer[1] = 0xdc;
		buffer[2] = 0x86;
		buffer[3] = 0xa4;
		i2c_master_send(c,buffer,4);
		default_tuner_init(c);
	default:
		default_tuner_init(c);
		break;
	}

	if (t->mode_mask == T_UNINITIALIZED)
		t->mode_mask = new_mode_mask;

	set_freq(c, t->freq);
	tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
		  c->adapter->name, c->driver->driver.name, c->addr << 1, type,
		  t->mode_mask);
}

/*
 * This function apply tuner config to tuner specified
 * by tun_setup structure. I addr is unset, then admin status
 * and tun addr status is more precise then current status,
 * it's applied. Otherwise status and type are applied only to
 * tuner with exactly the same addr.
*/

static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
{
	struct tuner *t = i2c_get_clientdata(c);

	if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
		(t->mode_mask & tun_setup->mode_mask)) ||
		tun_setup->addr == c->addr)) {
			set_type(c, tun_setup->type, tun_setup->mode_mask);
	}
}

static inline int check_mode(struct tuner *t, char *cmd)
{
	if ((1 << t->mode & t->mode_mask) == 0) {
		return EINVAL;
	}

	switch (t->mode) {
	case V4L2_TUNER_RADIO:
		tuner_dbg("Cmd %s accepted for radio\n", cmd);
		break;
	case V4L2_TUNER_ANALOG_TV:
		tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
		break;
	case V4L2_TUNER_DIGITAL_TV:
		tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
		break;
	}
	return 0;
}

static char pal[] = "-";
module_param_string(pal, pal, sizeof(pal), 0644);
static char secam[] = "--";
module_param_string(secam, secam, sizeof(secam), 0644);

/* get more precise norm info from insmod option */
static int tuner_fixup_std(struct tuner *t)
{
	if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
		switch (pal[0]) {
		case 'b':
		case 'B':
		case 'g':
		case 'G':
			tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
			t->std = V4L2_STD_PAL_BG;
			break;
		case 'i':
		case 'I':
			tuner_dbg ("insmod fixup: PAL => PAL-I\n");
			t->std = V4L2_STD_PAL_I;
			break;
		case 'd':
		case 'D':
		case 'k':
		case 'K':
			tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
			t->std = V4L2_STD_PAL_DK;
			break;
		case 'M':
		case 'm':
			tuner_dbg ("insmod fixup: PAL => PAL-M\n");
			t->std = V4L2_STD_PAL_M;
			break;
		case 'N':
		case 'n':
			tuner_dbg ("insmod fixup: PAL => PAL-N\n");
			t->std = V4L2_STD_PAL_N;
			break;
		case '-':
			/* default parameter, do nothing */
			break;
		default:
			tuner_warn ("pal= argument not recognised\n");
			break;
		}
	}
	if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
		switch (secam[0]) {
		case 'd':
		case 'D':
		case 'k':
		case 'K':
			tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
			t->std = V4L2_STD_SECAM_DK;
			break;
		case 'l':
		case 'L':
			if ((secam[1]=='C')||(secam[1]=='c')) {
				tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
				t->std = V4L2_STD_SECAM_LC;
			} else {
				tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
				t->std = V4L2_STD_SECAM_L;
			}
			break;
		case '-':
			/* default parameter, do nothing */
			break;
		default:
			tuner_warn ("secam= argument not recognised\n");
			break;
		}
	}

	return 0;
}

/* ---------------------------------------------------------------------- */

/* static var Used only in tuner_attach and tuner_probe */
static unsigned default_mode_mask;

/* During client attach, set_type is called by adapter's attach_inform callback.
   set_type must then be completed by tuner_attach.
 */
static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
{
	struct tuner *t;

	client_template.adapter = adap;
	client_template.addr = addr;

	t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
	if (NULL == t)
		return -ENOMEM;
	memset(t, 0, sizeof(struct tuner));
	memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
	i2c_set_clientdata(&t->i2c, t);
	t->type = UNSET;
	t->radio_if2 = 10700 * 1000;	/* 10.7MHz - FM radio */
	t->audmode = V4L2_TUNER_MODE_STEREO;
	t->mode_mask = T_UNINITIALIZED;

	if (show_i2c) {
		unsigned char buffer[16];
		int i,rc;

		memset(buffer, 0, sizeof(buffer));
		rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
		tuner_info("I2C RECV = ");
		for (i=0;i<rc;i++)
			printk("%02x ",buffer[i]);
		printk("\n");
	}
	/* TEA5767 autodetection code - only for addr = 0xc0 */
	if (!no_autodetect) {
		switch (addr) {
		case 0x42:
		case 0x43:
		case 0x4a:
		case 0x4b:
			/* If chip is not tda8290, don't register.
			   since it can be tda9887*/
			if (tda8290_probe(&t->i2c) != 0) {
				tuner_dbg("chip at addr %x is not a tda8290\n", addr);
				kfree(t);
				return 0;
			}
			break;
		case 0x60:
			if (tea5767_autodetection(&t->i2c) != EINVAL) {
				t->type = TUNER_TEA5767;
				t->mode_mask = T_RADIO;
				t->mode = T_STANDBY;
				t->freq = 87.5 * 16; /* Sets freq to FM range */
				default_mode_mask &= ~T_RADIO;

				goto register_client;
			}
			break;
		}
	}

	/* Initializes only the first adapter found */
	if (default_mode_mask != T_UNINITIALIZED) {
		tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
		t->mode_mask = default_mode_mask;
		t->freq = 400 * 16; /* Sets freq to VHF High */
		default_mode_mask = T_UNINITIALIZED;
	}

	/* Should be just before return */
register_client:
	tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
	i2c_attach_client (&t->i2c);
	set_type (&t->i2c,t->type, t->mode_mask);
	return 0;
}

static int tuner_probe(struct i2c_adapter *adap)
{
	if (0 != addr) {
		normal_i2c[0] = addr;
		normal_i2c[1] = I2C_CLIENT_END;
	}

	default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;

	if (adap->class & I2C_CLASS_TV_ANALOG)
		return i2c_probe(adap, &addr_data, tuner_attach);
	return 0;
}

static int tuner_detach(struct i2c_client *client)
{
	struct tuner *t = i2c_get_clientdata(client);
	int err;

	err = i2c_detach_client(&t->i2c);
	if (err) {
		tuner_warn
		    ("Client deregistration failed, client not detached.\n");
		return err;
	}

	kfree(t);
	return 0;
}

/*
 * Switch tuner to other mode. If tuner support both tv and radio,
 * set another frequency to some value (This is needed for some pal
 * tuners to avoid locking). Otherwise, just put second tuner in
 * standby mode.
 */

static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
{
	if (mode == t->mode)
		return 0;

	t->mode = mode;

	if (check_mode(t, cmd) == EINVAL) {
		t->mode = T_STANDBY;
		if (t->standby)
			t->standby (client);
		return EINVAL;
	}
	return 0;
}

#define switch_v4l2()	if (!t->using_v4l2) \
			    tuner_dbg("switching to v4l2\n"); \
			t->using_v4l2 = 1;

static inline int check_v4l2(struct tuner *t)
{
	if (t->using_v4l2) {
		tuner_dbg ("ignore v4l1 call\n");
		return EINVAL;
	}
	return 0;
}

static void tuner_status(struct i2c_client *client)
{
	struct tuner *t = i2c_get_clientdata(client);
	unsigned long freq, freq_fraction;
	const char *p;

	switch (t->mode) {
		case V4L2_TUNER_RADIO: 	    p = "radio"; break;
		case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
		case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
		default: p = "undefined"; break;
	}
	if (t->mode == V4L2_TUNER_RADIO) {
		freq = t->freq / 16000;
		freq_fraction = (t->freq % 16000) * 100 / 16000;
	} else {
		freq = t->freq / 16;
		freq_fraction = (t->freq % 16) * 100 / 16;
	}
	tuner_info("Tuner mode:      %s\n", p);
	tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
	tuner_info("Standard:        0x%08llx\n", t->std);
	if (t->mode == V4L2_TUNER_RADIO) {
		if (t->has_signal) {
			tuner_info("Signal strength: %d\n", t->has_signal(client));
		}
		if (t->is_stereo) {
			tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
		}
	}
}

static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
	struct tuner *t = i2c_get_clientdata(client);
	unsigned int *iarg = (int *)arg;

	switch (cmd) {
	/* --- configuration --- */
	case TUNER_SET_TYPE_ADDR:
		tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
				((struct tuner_setup *)arg)->type,
				((struct tuner_setup *)arg)->addr,
				((struct tuner_setup *)arg)->mode_mask);

		set_addr(client, (struct tuner_setup *)arg);
		break;
	case AUDC_SET_RADIO:
		set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
		break;
	case TUNER_SET_STANDBY:
		{
			if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
				return 0;
			if (t->standby)
				t->standby (client);
			break;
		}
	case AUDC_CONFIG_PINNACLE:
		switch (*iarg) {
		case 2:
			tuner_dbg("pinnacle pal\n");
			t->radio_if2 = 33300 * 1000;
			break;
		case 3:
			tuner_dbg("pinnacle ntsc\n");
			t->radio_if2 = 41300 * 1000;
			break;
		}
		break;
	case VIDIOCSAUDIO:
		if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
			return 0;
		if (check_v4l2(t) == EINVAL)
			return 0;

		/* Should be implemented, since bttv calls it */
		tuner_dbg("VIDIOCSAUDIO not implemented.\n");

		break;
	case MSP_SET_MATRIX:
	case TDA9887_SET_CONFIG:
		break;
	/* --- v4l ioctls --- */
	/* take care: bttv does userspace copying, we'll get a
	   kernel pointer here... */
	case VIDIOCSCHAN:
		{
			static const v4l2_std_id map[] = {
				[VIDEO_MODE_PAL] = V4L2_STD_PAL,
				[VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
				[VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
				[4 /* bttv */ ] = V4L2_STD_PAL_M,
				[5 /* bttv */ ] = V4L2_STD_PAL_N,
				[6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
			};
			struct video_channel *vc = arg;

			if (check_v4l2(t) == EINVAL)
				return 0;

			if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
				return 0;

			if (vc->norm < ARRAY_SIZE(map))
				t->std = map[vc->norm];
			tuner_fixup_std(t);
			if (t->freq)
				set_tv_freq(client, t->freq);
			return 0;
		}
	case VIDIOCSFREQ:
		{
			unsigned long *v = arg;

			if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
				return 0;
			if (check_v4l2(t) == EINVAL)
				return 0;

			set_freq(client, *v);
			return 0;
		}
	case VIDIOCGTUNER:
		{
			struct video_tuner *vt = arg;

			if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
				return 0;
			if (check_v4l2(t) == EINVAL)
				return 0;

			if (V4L2_TUNER_RADIO == t->mode) {
				if (t->has_signal)
					vt->signal = t->has_signal(client);
				if (t->is_stereo) {
					if (t->is_stereo(client))
						vt->flags |=
						    VIDEO_TUNER_STEREO_ON;
					else
						vt->flags &=
						    ~VIDEO_TUNER_STEREO_ON;
				}
				vt->flags |= VIDEO_TUNER_LOW;	/* Allow freqs at 62.5 Hz */

				vt->rangelow = radio_range[0] * 16000;
				vt->rangehigh = radio_range[1] * 16000;

			} else {
				vt->rangelow = tv_range[0] * 16;
				vt->rangehigh = tv_range[1] * 16;
			}

			return 0;
		}
	case VIDIOCGAUDIO:
		{
			struct video_audio *va = arg;

			if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
				return 0;
			if (check_v4l2(t) == EINVAL)
				return 0;

			if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
				va->mode = t->is_stereo(client)
				    ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
			return 0;
		}

	case VIDIOC_S_STD:
		{
			v4l2_std_id *id = arg;

			if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
					== EINVAL)
				return 0;

			switch_v4l2();

			t->std = *id;
			tuner_fixup_std(t);
			if (t->freq)
				set_freq(client, t->freq);
			break;
		}
	case VIDIOC_S_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			t->freq = f->frequency;
			switch_v4l2();
			if (V4L2_TUNER_RADIO == f->type &&
			    V4L2_TUNER_RADIO != t->mode) {
				if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
					    == EINVAL)
					return 0;
			}
			set_freq(client,t->freq);

			break;
		}
	case VIDIOC_G_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
				return 0;
			switch_v4l2();
			f->type = t->mode;
			f->frequency = t->freq;
			break;
		}
	case VIDIOC_G_TUNER:
		{
			struct v4l2_tuner *tuner = arg;

			if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
				return 0;
			switch_v4l2();

			if (V4L2_TUNER_RADIO == t->mode) {

				if (t->has_signal)
					tuner->signal = t->has_signal(client);

				if (t->is_stereo) {
					if (t->is_stereo(client)) {
						tuner->rxsubchans =
						    V4L2_TUNER_SUB_STEREO |
						    V4L2_TUNER_SUB_MONO;
					} else {
						tuner->rxsubchans =
						    V4L2_TUNER_SUB_MONO;
					}
				}

				tuner->capability |=
				    V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;

				tuner->audmode = t->audmode;

				tuner->rangelow = radio_range[0] * 16000;
				tuner->rangehigh = radio_range[1] * 16000;
			} else {
				tuner->rangelow = tv_range[0] * 16;
				tuner->rangehigh = tv_range[1] * 16;
			}
			break;
		}
	case VIDIOC_S_TUNER:
		{
			struct v4l2_tuner *tuner = arg;

			if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
				return 0;

			switch_v4l2();

			if (V4L2_TUNER_RADIO == t->mode) {
				t->audmode = tuner->audmode;
				set_radio_freq(client, t->freq);
			}
			break;
		}
	case VIDIOC_LOG_STATUS:
		tuner_status(client);
		break;
	default:
		tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp='%c',nr=%d,sz=%d)\n",
					 cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
					_IOC_NR(cmd), _IOC_SIZE(cmd));
		break;
	}

	return 0;
}

static int tuner_suspend(struct device *dev, pm_message_t state)
{
	struct i2c_client *c = container_of (dev, struct i2c_client, dev);
	struct tuner *t = i2c_get_clientdata (c);

	tuner_dbg ("suspend\n");
	/* FIXME: power down ??? */
	return 0;
}

static int tuner_resume(struct device *dev)
{
	struct i2c_client *c = container_of (dev, struct i2c_client, dev);
	struct tuner *t = i2c_get_clientdata (c);

	tuner_dbg ("resume\n");
	if (t->freq)
		set_freq(c, t->freq);
	return 0;
}

/* ----------------------------------------------------------------------- */

static struct i2c_driver driver = {
	.id = I2C_DRIVERID_TUNER,
	.attach_adapter = tuner_probe,
	.detach_client = tuner_detach,
	.command = tuner_command,
	.driver = {
		   .name = "tuner",
		   .suspend = tuner_suspend,
		   .resume = tuner_resume,
		   },
};
static struct i2c_client client_template = {
	.name = "(tuner unset)",
	.driver = &driver,
};

static int __init tuner_init_module(void)
{
	return i2c_add_driver(&driver);
}

static void __exit tuner_cleanup_module(void)
{
	i2c_del_driver(&driver);
}

module_init(tuner_init_module);
module_exit(tuner_cleanup_module);

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */