summaryrefslogtreecommitdiffstats
path: root/drivers/media/i2c/msp3400-driver.c
blob: 503b7c4f0a9bbd0929bdf59dcfa690851e0d0396 (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
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
/*
 * Programming the mspx4xx sound processor family
 *
 * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
 *
 * what works and what doesn't:
 *
 *  AM-Mono
 *      Support for Hauppauge cards added (decoding handled by tuner) added by
 *      Frederic Crozat <fcrozat@mail.dotcom.fr>
 *
 *  FM-Mono
 *      should work. The stereo modes are backward compatible to FM-mono,
 *      therefore FM-Mono should be allways available.
 *
 *  FM-Stereo (B/G, used in germany)
 *      should work, with autodetect
 *
 *  FM-Stereo (satellite)
 *      should work, no autodetect (i.e. default is mono, but you can
 *      switch to stereo -- untested)
 *
 *  NICAM (B/G, L , used in UK, Scandinavia, Spain and France)
 *      should work, with autodetect. Support for NICAM was added by
 *      Pekka Pietikainen <pp@netppl.fi>
 *
 * TODO:
 *   - better SAT support
 *
 * 980623  Thomas Sailer (sailer@ife.ee.ethz.ch)
 *         using soundcore instead of OSS
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */


#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/drv-intf/msp3400.h>
#include <media/i2c/tvaudio.h>
#include "msp3400-driver.h"

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

MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
MODULE_AUTHOR("Gerd Knorr");
MODULE_LICENSE("GPL");

/* module parameters */
static int opmode   = OPMODE_AUTO;
int msp_debug;		 /* msp_debug output */
bool msp_once;		 /* no continuous stereo monitoring */
bool msp_amsound;	 /* hard-wire AM sound at 6.5 Hz (france),
			    the autoscan seems work well only with FM... */
int msp_standard = 1;    /* Override auto detect of audio msp_standard,
			    if needed. */
bool msp_dolby;

int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
					(msp34xxg only) 0x00a0-0x03c0 */

/* read-only */
module_param(opmode,           int, 0444);

/* read-write */
module_param_named(once, msp_once,                      bool, 0644);
module_param_named(debug, msp_debug,                    int,  0644);
module_param_named(stereo_threshold, msp_stereo_thresh, int,  0644);
module_param_named(standard, msp_standard,              int,  0644);
module_param_named(amsound, msp_amsound,                bool, 0644);
module_param_named(dolby, msp_dolby,                    bool, 0644);

MODULE_PARM_DESC(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
MODULE_PARM_DESC(once, "No continuous stereo monitoring");
MODULE_PARM_DESC(debug, "Enable debug messages [0-3]");
MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
MODULE_PARM_DESC(dolby, "Activates Dolby processing");

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

/* control subaddress */
#define I2C_MSP_CONTROL 0x00
/* demodulator unit subaddress */
#define I2C_MSP_DEM     0x10
/* DSP unit subaddress */
#define I2C_MSP_DSP     0x12


/* ----------------------------------------------------------------------- */
/* functions for talking to the MSP3400C Sound processor                   */

int msp_reset(struct i2c_client *client)
{
	/* reset and read revision code */
	static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
	static u8 reset_on[3]  = { I2C_MSP_CONTROL, 0x00, 0x00 };
	static u8 write[3]     = { I2C_MSP_DSP + 1, 0x00, 0x1e };
	u8 read[2];
	struct i2c_msg reset[2] = {
		{
			.addr = client->addr,
			.flags = I2C_M_IGNORE_NAK,
			.len = 3,
			.buf = reset_off
		},
		{
			.addr = client->addr,
			.flags = I2C_M_IGNORE_NAK,
			.len = 3,
			.buf = reset_on
		},
	};
	struct i2c_msg test[2] = {
		{
			.addr = client->addr,
			.len = 3,
			.buf = write
		},
		{
			.addr = client->addr,
			.flags = I2C_M_RD,
			.len = 2,
			.buf = read
		},
	};

	v4l_dbg(3, msp_debug, client, "msp_reset\n");
	if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
	    i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
	    i2c_transfer(client->adapter, test, 2) != 2) {
		v4l_err(client, "chip reset failed\n");
		return -1;
	}
	return 0;
}

static int msp_read(struct i2c_client *client, int dev, int addr)
{
	int err, retval;
	u8 write[3];
	u8 read[2];
	struct i2c_msg msgs[2] = {
		{
			.addr = client->addr,
			.len = 3,
			.buf = write
		},
		{
			.addr = client->addr,
			.flags = I2C_M_RD,
			.len = 2,
			.buf = read
		}
	};

	write[0] = dev + 1;
	write[1] = addr >> 8;
	write[2] = addr & 0xff;

	for (err = 0; err < 3; err++) {
		if (i2c_transfer(client->adapter, msgs, 2) == 2)
			break;
		v4l_warn(client, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
		       dev, addr);
		schedule_timeout_interruptible(msecs_to_jiffies(10));
	}
	if (err == 3) {
		v4l_warn(client, "resetting chip, sound will go off.\n");
		msp_reset(client);
		return -1;
	}
	retval = read[0] << 8 | read[1];
	v4l_dbg(3, msp_debug, client, "msp_read(0x%x, 0x%x): 0x%x\n",
			dev, addr, retval);
	return retval;
}

int msp_read_dem(struct i2c_client *client, int addr)
{
	return msp_read(client, I2C_MSP_DEM, addr);
}

int msp_read_dsp(struct i2c_client *client, int addr)
{
	return msp_read(client, I2C_MSP_DSP, addr);
}

static int msp_write(struct i2c_client *client, int dev, int addr, int val)
{
	int err;
	u8 buffer[5];

	buffer[0] = dev;
	buffer[1] = addr >> 8;
	buffer[2] = addr &  0xff;
	buffer[3] = val  >> 8;
	buffer[4] = val  &  0xff;

	v4l_dbg(3, msp_debug, client, "msp_write(0x%x, 0x%x, 0x%x)\n",
			dev, addr, val);
	for (err = 0; err < 3; err++) {
		if (i2c_master_send(client, buffer, 5) == 5)
			break;
		v4l_warn(client, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
		       dev, addr);
		schedule_timeout_interruptible(msecs_to_jiffies(10));
	}
	if (err == 3) {
		v4l_warn(client, "resetting chip, sound will go off.\n");
		msp_reset(client);
		return -1;
	}
	return 0;
}

int msp_write_dem(struct i2c_client *client, int addr, int val)
{
	return msp_write(client, I2C_MSP_DEM, addr, val);
}

int msp_write_dsp(struct i2c_client *client, int addr, int val)
{
	return msp_write(client, I2C_MSP_DSP, addr, val);
}

/* ----------------------------------------------------------------------- *
 * bits  9  8  5 - SCART DSP input Select:
 *       0  0  0 - SCART 1 to DSP input (reset position)
 *       0  1  0 - MONO to DSP input
 *       1  0  0 - SCART 2 to DSP input
 *       1  1  1 - Mute DSP input
 *
 * bits 11 10  6 - SCART 1 Output Select:
 *       0  0  0 - undefined (reset position)
 *       0  1  0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
 *       1  0  0 - MONO input to SCART 1 Output
 *       1  1  0 - SCART 1 DA to SCART 1 Output
 *       0  0  1 - SCART 2 DA to SCART 1 Output
 *       0  1  1 - SCART 1 Input to SCART 1 Output
 *       1  1  1 - Mute SCART 1 Output
 *
 * bits 13 12  7 - SCART 2 Output Select (for devices with 2 Output SCART):
 *       0  0  0 - SCART 1 DA to SCART 2 Output (reset position)
 *       0  1  0 - SCART 1 Input to SCART 2 Output
 *       1  0  0 - MONO input to SCART 2 Output
 *       0  0  1 - SCART 2 DA to SCART 2 Output
 *       0  1  1 - SCART 2 Input to SCART 2 Output
 *       1  1  0 - Mute SCART 2 Output
 *
 * Bits 4 to 0 should be zero.
 * ----------------------------------------------------------------------- */

static int scarts[3][9] = {
	/* MASK   IN1     IN2     IN3     IN4     IN1_DA  IN2_DA  MONO    MUTE   */
	/* SCART DSP Input select */
	{ 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1,     -1,     0x0100, 0x0320 },
	/* SCART1 Output select */
	{ 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
	/* SCART2 Output select */
	{ 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
};

static char *scart_names[] = {
	"in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
};

void msp_set_scart(struct i2c_client *client, int in, int out)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	state->in_scart = in;

	if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
		if (-1 == scarts[out][in + 1])
			return;

		state->acb &= ~scarts[out][0];
		state->acb |=  scarts[out][in + 1];
	} else
		state->acb = 0xf60; /* Mute Input and SCART 1 Output */

	v4l_dbg(1, msp_debug, client, "scart switch: %s => %d (ACB=0x%04x)\n",
					scart_names[in], out, state->acb);
	msp_write_dsp(client, 0x13, state->acb);

	/* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
	if (state->has_i2s_conf)
		msp_write_dem(client, 0x40, state->i2s_mode);
}

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

static void msp_wake_thread(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	if (NULL == state->kthread)
		return;
	state->watch_stereo = 0;
	state->restart = 1;
	wake_up_interruptible(&state->wq);
}

int msp_sleep(struct msp_state *state, int timeout)
{
	DECLARE_WAITQUEUE(wait, current);

	add_wait_queue(&state->wq, &wait);
	if (!kthread_should_stop()) {
		if (timeout < 0) {
			set_current_state(TASK_INTERRUPTIBLE);
			schedule();
		} else {
			schedule_timeout_interruptible
						(msecs_to_jiffies(timeout));
		}
	}

	remove_wait_queue(&state->wq, &wait);
	try_to_freeze();
	return state->restart;
}

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

static int msp_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct msp_state *state = ctrl_to_state(ctrl);
	struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
	int val = ctrl->val;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_VOLUME: {
		/* audio volume cluster */
		int reallymuted = state->muted->val | state->scan_in_progress;

		if (!reallymuted)
			val = (val * 0x7f / 65535) << 8;

		v4l_dbg(1, msp_debug, client, "mute=%s scanning=%s volume=%d\n",
				state->muted->val ? "on" : "off",
				state->scan_in_progress ? "yes" : "no",
				state->volume->val);

		msp_write_dsp(client, 0x0000, val);
		msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
		if (state->has_scart2_out_volume)
			msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
		if (state->has_headphones)
			msp_write_dsp(client, 0x0006, val);
		break;
	}

	case V4L2_CID_AUDIO_BASS:
		val = ((val - 32768) * 0x60 / 65535) << 8;
		msp_write_dsp(client, 0x0002, val);
		if (state->has_headphones)
			msp_write_dsp(client, 0x0031, val);
		break;

	case V4L2_CID_AUDIO_TREBLE:
		val = ((val - 32768) * 0x60 / 65535) << 8;
		msp_write_dsp(client, 0x0003, val);
		if (state->has_headphones)
			msp_write_dsp(client, 0x0032, val);
		break;

	case V4L2_CID_AUDIO_LOUDNESS:
		val = val ? ((5 * 4) << 8) : 0;
		msp_write_dsp(client, 0x0004, val);
		if (state->has_headphones)
			msp_write_dsp(client, 0x0033, val);
		break;

	case V4L2_CID_AUDIO_BALANCE:
		val = (u8)((val / 256) - 128);
		msp_write_dsp(client, 0x0001, val << 8);
		if (state->has_headphones)
			msp_write_dsp(client, 0x0030, val << 8);
		break;

	default:
		return -EINVAL;
	}
	return 0;
}

void msp_update_volume(struct msp_state *state)
{
	/* Force an update of the volume/mute cluster */
	v4l2_ctrl_lock(state->volume);
	state->volume->val = state->volume->cur.val;
	state->muted->val = state->muted->cur.val;
	msp_s_ctrl(state->volume);
	v4l2_ctrl_unlock(state->volume);
}

/* --- v4l2 ioctls --- */
static int msp_s_radio(struct v4l2_subdev *sd)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	if (state->radio)
		return 0;
	state->radio = 1;
	v4l_dbg(1, msp_debug, client, "switching to radio mode\n");
	state->watch_stereo = 0;
	switch (state->opmode) {
	case OPMODE_MANUAL:
		/* set msp3400 to FM radio mode */
		msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
		msp3400c_set_carrier(client, MSP_CARRIER(10.7),
				MSP_CARRIER(10.7));
		msp_update_volume(state);
		break;
	case OPMODE_AUTODETECT:
	case OPMODE_AUTOSELECT:
		/* the thread will do for us */
		msp_wake_thread(client);
		break;
	}
	return 0;
}

static int msp_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	/* new channel -- kick audio carrier scan */
	msp_wake_thread(client);
	return 0;
}

static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	*id &= state->detected_std;

	v4l_dbg(2, msp_debug, client,
		"detected standard: %s(0x%08Lx)\n",
		msp_standard_std_name(state->std), state->detected_std);

	return 0;
}

static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int update = state->radio || state->v4l2_std != id;

	state->v4l2_std = id;
	state->radio = 0;
	if (update)
		msp_wake_thread(client);
	return 0;
}

static int msp_s_routing(struct v4l2_subdev *sd,
			 u32 input, u32 output, u32 config)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int tuner = (input >> 3) & 1;
	int sc_in = input & 0x7;
	int sc1_out = output & 0xf;
	int sc2_out = (output >> 4) & 0xf;
	u16 val, reg;
	int i;
	int extern_input = 1;

	if (state->route_in == input && state->route_out == output)
		return 0;
	state->route_in = input;
	state->route_out = output;
	/* check if the tuner input is used */
	for (i = 0; i < 5; i++) {
		if (((input >> (4 + i * 4)) & 0xf) == 0)
			extern_input = 0;
	}
	state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
	state->rxsubchans = V4L2_TUNER_SUB_STEREO;
	msp_set_scart(client, sc_in, 0);
	msp_set_scart(client, sc1_out, 1);
	msp_set_scart(client, sc2_out, 2);
	msp_set_audmode(client);
	reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
	val = msp_read_dem(client, reg);
	msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
	/* wake thread when a new input is chosen */
	msp_wake_thread(client);
	return 0;
}

static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	if (vt->type != V4L2_TUNER_ANALOG_TV)
		return 0;
	if (!state->radio) {
		if (state->opmode == OPMODE_AUTOSELECT)
			msp_detect_stereo(client);
		vt->rxsubchans = state->rxsubchans;
	}
	vt->audmode = state->audmode;
	vt->capability |= V4L2_TUNER_CAP_STEREO |
		V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
	return 0;
}

static int msp_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	if (state->radio)  /* TODO: add mono/stereo support for radio */
		return 0;
	if (state->audmode == vt->audmode)
		return 0;
	state->audmode = vt->audmode;
	/* only set audmode */
	msp_set_audmode(client);
	return 0;
}

static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	v4l_dbg(1, msp_debug, client, "Setting I2S speed to %d\n", freq);

	switch (freq) {
		case 1024000:
			state->i2s_mode = 0;
			break;
		case 2048000:
			state->i2s_mode = 1;
			break;
		default:
			return -EINVAL;
	}
	return 0;
}

static int msp_log_status(struct v4l2_subdev *sd)
{
	struct msp_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	const char *p;
	char prefix[V4L2_SUBDEV_NAME_SIZE + 20];

	if (state->opmode == OPMODE_AUTOSELECT)
		msp_detect_stereo(client);
	v4l_info(client, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
			client->name, state->rev1, state->rev2);
	snprintf(prefix, sizeof(prefix), "%s: Audio:    ", sd->name);
	v4l2_ctrl_handler_log_status(&state->hdl, prefix);
	switch (state->mode) {
		case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
		case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
		case MSP_MODE_FM_TERRA: p = "Terrestrial FM-mono/stereo"; break;
		case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
		case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
		case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
		case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
		case MSP_MODE_BTSC: p = "BTSC"; break;
		case MSP_MODE_EXTERN: p = "External input"; break;
		default: p = "unknown"; break;
	}
	if (state->mode == MSP_MODE_EXTERN) {
		v4l_info(client, "Mode:     %s\n", p);
	} else if (state->opmode == OPMODE_MANUAL) {
		v4l_info(client, "Mode:     %s (%s%s)\n", p,
				(state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
				(state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
	} else {
		if (state->opmode == OPMODE_AUTODETECT)
			v4l_info(client, "Mode:     %s\n", p);
		v4l_info(client, "Standard: %s (%s%s)\n",
				msp_standard_std_name(state->std),
				(state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
				(state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
	}
	v4l_info(client, "Audmode:  0x%04x\n", state->audmode);
	v4l_info(client, "Routing:  0x%08x (input) 0x%08x (output)\n",
			state->route_in, state->route_out);
	v4l_info(client, "ACB:      0x%04x\n", state->acb);
	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int msp_suspend(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	v4l_dbg(1, msp_debug, client, "suspend\n");
	msp_reset(client);
	return 0;
}

static int msp_resume(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	v4l_dbg(1, msp_debug, client, "resume\n");
	msp_wake_thread(client);
	return 0;
}
#endif

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

static const struct v4l2_ctrl_ops msp_ctrl_ops = {
	.s_ctrl = msp_s_ctrl,
};

static const struct v4l2_subdev_core_ops msp_core_ops = {
	.log_status = msp_log_status,
};

static const struct v4l2_subdev_video_ops msp_video_ops = {
	.s_std = msp_s_std,
	.querystd = msp_querystd,
};

static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
	.s_frequency = msp_s_frequency,
	.g_tuner = msp_g_tuner,
	.s_tuner = msp_s_tuner,
	.s_radio = msp_s_radio,
};

static const struct v4l2_subdev_audio_ops msp_audio_ops = {
	.s_routing = msp_s_routing,
	.s_i2s_clock_freq = msp_s_i2s_clock_freq,
};

static const struct v4l2_subdev_ops msp_ops = {
	.core = &msp_core_ops,
	.video = &msp_video_ops,
	.tuner = &msp_tuner_ops,
	.audio = &msp_audio_ops,
};

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

static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
	struct msp_state *state;
	struct v4l2_subdev *sd;
	struct v4l2_ctrl_handler *hdl;
	int (*thread_func)(void *data) = NULL;
	int msp_hard;
	int msp_family;
	int msp_revision;
	int msp_product, msp_prod_hi, msp_prod_lo;
	int msp_rom;
#if defined(CONFIG_MEDIA_CONTROLLER)
	int ret;
#endif

	if (!id)
		strlcpy(client->name, "msp3400", sizeof(client->name));

	if (msp_reset(client) == -1) {
		v4l_dbg(1, msp_debug, client, "msp3400 not found\n");
		return -ENODEV;
	}

	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
	if (!state)
		return -ENOMEM;

	sd = &state->sd;
	v4l2_i2c_subdev_init(sd, client, &msp_ops);

#if defined(CONFIG_MEDIA_CONTROLLER)
	state->pads[IF_AUD_DEC_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
	state->pads[IF_AUD_DEC_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;

	sd->entity.function = MEDIA_ENT_F_IF_AUD_DECODER;

	ret = media_entity_pads_init(&sd->entity, 2, state->pads);
	if (ret < 0)
		return ret;
#endif

	state->v4l2_std = V4L2_STD_NTSC;
	state->detected_std = V4L2_STD_ALL;
	state->audmode = V4L2_TUNER_MODE_STEREO;
	state->input = -1;
	state->i2s_mode = 0;
	init_waitqueue_head(&state->wq);
	/* These are the reset input/output positions */
	state->route_in = MSP_INPUT_DEFAULT;
	state->route_out = MSP_OUTPUT_DEFAULT;

	state->rev1 = msp_read_dsp(client, 0x1e);
	if (state->rev1 != -1)
		state->rev2 = msp_read_dsp(client, 0x1f);
	v4l_dbg(1, msp_debug, client, "rev1=0x%04x, rev2=0x%04x\n",
			state->rev1, state->rev2);
	if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
		v4l_dbg(1, msp_debug, client,
				"not an msp3400 (cannot read chip version)\n");
		return -ENODEV;
	}

	msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
	msp_product = (state->rev2 >> 8) & 0xff;
	msp_prod_hi = msp_product / 10;
	msp_prod_lo = msp_product % 10;
	msp_revision = (state->rev1 & 0x0f) + '@';
	msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
	msp_rom = state->rev2 & 0x1f;
	/* Rev B=2, C=3, D=4, G=7 */
	state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
			msp_revision - '@';

	/* Has NICAM support: all mspx41x and mspx45x products have NICAM */
	state->has_nicam =
		msp_prod_hi == 1 || msp_prod_hi == 5;
	/* Has radio support: was added with revision G */
	state->has_radio =
		msp_revision >= 'G';
	/* Has headphones output: not for stripped down products */
	state->has_headphones =
		msp_prod_lo < 5;
	/* Has scart2 input: not in stripped down products of the '3' family */
	state->has_scart2 =
		msp_family >= 4 || msp_prod_lo < 7;
	/* Has scart3 input: not in stripped down products of the '3' family */
	state->has_scart3 =
		msp_family >= 4 || msp_prod_lo < 5;
	/* Has scart4 input: not in pre D revisions, not in stripped D revs */
	state->has_scart4 =
		msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
	/* Has scart2 output: not in stripped down products of
	 * the '3' family */
	state->has_scart2_out =
		msp_family >= 4 || msp_prod_lo < 5;
	/* Has scart2 a volume control? Not in pre-D revisions. */
	state->has_scart2_out_volume =
		msp_revision > 'C' && state->has_scart2_out;
	/* Has a configurable i2s out? */
	state->has_i2s_conf =
		msp_revision >= 'G' && msp_prod_lo < 7;
	/* Has subwoofer output: not in pre-D revs and not in stripped down
	 * products */
	state->has_subwoofer =
		msp_revision >= 'D' && msp_prod_lo < 5;
	/* Has soundprocessing (bass/treble/balance/loudness/equalizer):
	 *  not in stripped down products */
	state->has_sound_processing =
		msp_prod_lo < 7;
	/* Has Virtual Dolby Surround: only in msp34x1 */
	state->has_virtual_dolby_surround =
		msp_revision == 'G' && msp_prod_lo == 1;
	/* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
	state->has_dolby_pro_logic =
		msp_revision == 'G' && msp_prod_lo == 2;
	/* The msp343xG supports BTSC only and cannot do Automatic Standard
	 * Detection. */
	state->force_btsc =
		msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;

	state->opmode = opmode;
	if (state->opmode == OPMODE_AUTO) {
		/* MSP revision G and up have both autodetect and autoselect */
		if (msp_revision >= 'G')
			state->opmode = OPMODE_AUTOSELECT;
		/* MSP revision D and up have autodetect */
		else if (msp_revision >= 'D')
			state->opmode = OPMODE_AUTODETECT;
		else
			state->opmode = OPMODE_MANUAL;
	}

	hdl = &state->hdl;
	v4l2_ctrl_handler_init(hdl, 6);
	if (state->has_sound_processing) {
		v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
			V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
		v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
			V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
		v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
			V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
	}
	state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
			V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
	v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
			V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
	state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
			V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
	sd->ctrl_handler = hdl;
	if (hdl->error) {
		int err = hdl->error;

		v4l2_ctrl_handler_free(hdl);
		return err;
	}

	v4l2_ctrl_cluster(2, &state->volume);
	v4l2_ctrl_handler_setup(hdl);

	/* hello world :-) */
	v4l_info(client, "MSP%d4%02d%c-%c%d found @ 0x%x (%s)\n",
			msp_family, msp_product,
			msp_revision, msp_hard, msp_rom,
			client->addr << 1, client->adapter->name);
	v4l_info(client, "%s ", client->name);
	if (state->has_nicam && state->has_radio)
		printk(KERN_CONT "supports nicam and radio, ");
	else if (state->has_nicam)
		printk(KERN_CONT "supports nicam, ");
	else if (state->has_radio)
		printk(KERN_CONT "supports radio, ");
	printk(KERN_CONT "mode is ");

	/* version-specific initialization */
	switch (state->opmode) {
	case OPMODE_MANUAL:
		printk(KERN_CONT "manual");
		thread_func = msp3400c_thread;
		break;
	case OPMODE_AUTODETECT:
		printk(KERN_CONT "autodetect");
		thread_func = msp3410d_thread;
		break;
	case OPMODE_AUTOSELECT:
		printk(KERN_CONT "autodetect and autoselect");
		thread_func = msp34xxg_thread;
		break;
	}
	printk(KERN_CONT "\n");

	/* startup control thread if needed */
	if (thread_func) {
		state->kthread = kthread_run(thread_func, client, "msp34xx");

		if (IS_ERR(state->kthread))
			v4l_warn(client, "kernel_thread() failed\n");
		msp_wake_thread(client);
	}
	return 0;
}

static int msp_remove(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	v4l2_device_unregister_subdev(&state->sd);
	/* shutdown control thread */
	if (state->kthread) {
		state->restart = 1;
		kthread_stop(state->kthread);
	}
	msp_reset(client);

	v4l2_ctrl_handler_free(&state->hdl);
	return 0;
}

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

static const struct dev_pm_ops msp3400_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(msp_suspend, msp_resume)
};

static const struct i2c_device_id msp_id[] = {
	{ "msp3400", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, msp_id);

static struct i2c_driver msp_driver = {
	.driver = {
		.name	= "msp3400",
		.pm	= &msp3400_pm_ops,
	},
	.probe		= msp_probe,
	.remove		= msp_remove,
	.id_table	= msp_id,
};

module_i2c_driver(msp_driver);