1 /*
2  * Programming the mspx4xx sound processor family
3  *
4  * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19  * 02110-1301, USA.
20  */
21 
22 
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/i2c.h>
26 #include <linux/freezer.h>
27 #include <linux/videodev2.h>
28 #include <media/v4l2-common.h>
29 #include <media/msp3400.h>
30 #include <linux/kthread.h>
31 #include <linux/suspend.h>
32 #include "msp3400-driver.h"
33 
34 /* this one uses the automatic sound standard detection of newer msp34xx
35    chip versions */
36 static struct {
37 	int retval;
38 	int main, second;
39 	char *name;
40 	v4l2_std_id std;
41 } msp_stdlist[] = {
42 	{ 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL },
43 	{ 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL },
44 	{ 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72),
45 	  "4.5/4.72  M Dual FM-Stereo", V4L2_STD_MN },
46 	{ 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875),
47 	  "5.5/5.74  B/G Dual FM-Stereo", V4L2_STD_BG },
48 	{ 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125),
49 	  "6.5/6.25  D/K1 Dual FM-Stereo", V4L2_STD_DK },
50 	{ 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875),
51 	  "6.5/6.74  D/K2 Dual FM-Stereo", V4L2_STD_DK },
52 	{ 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
53 	  "6.5  D/K FM-Mono (HDEV3)", V4L2_STD_DK },
54 	{ 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875),
55 	  "6.5/5.74  D/K3 Dual FM-Stereo", V4L2_STD_DK },
56 	{ 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85),
57 	  "5.5/5.85  B/G NICAM FM", V4L2_STD_BG },
58 	{ 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
59 	  "6.5/5.85  L NICAM AM", V4L2_STD_L },
60 	{ 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55),
61 	  "6.0/6.55  I NICAM FM", V4L2_STD_PAL_I },
62 	{ 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
63 	  "6.5/5.85  D/K NICAM FM", V4L2_STD_DK },
64 	{ 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
65 	  "6.5/5.85  D/K NICAM FM (HDEV2)", V4L2_STD_DK },
66 	{ 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
67 	  "6.5/5.85  D/K NICAM FM (HDEV3)", V4L2_STD_DK },
68 	{ 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
69 	  "4.5  M BTSC-Stereo", V4L2_STD_MTS },
70 	{ 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
71 	  "4.5  M BTSC-Mono + SAP", V4L2_STD_MTS },
72 	{ 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
73 	  "4.5  M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP },
74 	{ 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7),
75 	  "10.7  FM-Stereo Radio", V4L2_STD_ALL },
76 	{ 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
77 	  "6.5  SAT-Mono", V4L2_STD_ALL },
78 	{ 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20),
79 	  "7.02/7.20  SAT-Stereo", V4L2_STD_ALL },
80 	{ 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2),
81 	  "7.2  SAT ADR", V4L2_STD_ALL },
82 	{     -1, 0, 0, NULL, 0 }, /* EOF */
83 };
84 
85 static struct msp3400c_init_data_dem {
86 	int fir1[6];
87 	int fir2[6];
88 	int cdo1;
89 	int cdo2;
90 	int ad_cv;
91 	int mode_reg;
92 	int dsp_src;
93 	int dsp_matrix;
94 } msp3400c_init_data[] = {
95 	{	/* AM (for carrier detect / msp3400) */
96 		{75, 19, 36, 35, 39, 40},
97 		{75, 19, 36, 35, 39, 40},
98 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
99 		0x00d0, 0x0500, 0x0020, 0x3000
100 	}, {	/* AM (for carrier detect / msp3410) */
101 		{-1, -1, -8, 2, 59, 126},
102 		{-1, -1, -8, 2, 59, 126},
103 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
104 		0x00d0, 0x0100, 0x0020, 0x3000
105 	}, {	/* FM Radio */
106 		{-8, -8, 4, 6, 78, 107},
107 		{-8, -8, 4, 6, 78, 107},
108 		MSP_CARRIER(10.7), MSP_CARRIER(10.7),
109 		0x00d0, 0x0480, 0x0020, 0x3000
110 	}, {	/* Terrestrial FM-mono + FM-stereo */
111 		{3, 18, 27, 48, 66, 72},
112 		{3, 18, 27, 48, 66, 72},
113 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
114 		0x00d0, 0x0480, 0x0030, 0x3000
115 	}, {	/* Sat FM-mono */
116 		{ 1, 9, 14, 24, 33, 37},
117 		{ 3, 18, 27, 48, 66, 72},
118 		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
119 		0x00c6, 0x0480, 0x0000, 0x3000
120 	}, {	/* NICAM/FM --  B/G (5.5/5.85), D/K (6.5/5.85) */
121 		{-2, -8, -10, 10, 50, 86},
122 		{3, 18, 27, 48, 66, 72},
123 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
124 		0x00d0, 0x0040, 0x0120, 0x3000
125 	}, {	/* NICAM/FM -- I (6.0/6.552) */
126 		{2, 4, -6, -4, 40, 94},
127 		{3, 18, 27, 48, 66, 72},
128 		MSP_CARRIER(6.0), MSP_CARRIER(6.0),
129 		0x00d0, 0x0040, 0x0120, 0x3000
130 	}, {	/* NICAM/AM -- L (6.5/5.85) */
131 		{-2, -8, -10, 10, 50, 86},
132 		{-4, -12, -9, 23, 79, 126},
133 		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
134 		0x00c6, 0x0140, 0x0120, 0x7c00
135 	},
136 };
137 
138 struct msp3400c_carrier_detect {
139 	int   cdo;
140 	char *name;
141 };
142 
143 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
144 	/* main carrier */
145 	{ MSP_CARRIER(4.5),        "4.5   NTSC"                   },
146 	{ MSP_CARRIER(5.5),        "5.5   PAL B/G"                },
147 	{ MSP_CARRIER(6.0),        "6.0   PAL I"                  },
148 	{ MSP_CARRIER(6.5),        "6.5   PAL D/K + SAT + SECAM"  }
149 };
150 
151 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
152 	/* PAL B/G */
153 	{ MSP_CARRIER(5.7421875),  "5.742 PAL B/G FM-stereo"     },
154 	{ MSP_CARRIER(5.85),       "5.85  PAL B/G NICAM"         }
155 };
156 
157 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
158 	/* PAL SAT / SECAM */
159 	{ MSP_CARRIER(5.85),       "5.85  PAL D/K + SECAM NICAM" },
160 	{ MSP_CARRIER(6.2578125),  "6.25  PAL D/K1 FM-stereo" },
161 	{ MSP_CARRIER(6.7421875),  "6.74  PAL D/K2 FM-stereo" },
162 	{ MSP_CARRIER(7.02),       "7.02  PAL SAT FM-stereo s/b" },
163 	{ MSP_CARRIER(7.20),       "7.20  PAL SAT FM-stereo s"   },
164 	{ MSP_CARRIER(7.38),       "7.38  PAL SAT FM-stereo b"   },
165 };
166 
167 /* ------------------------------------------------------------------------ */
168 
169 const char *msp_standard_std_name(int std)
170 {
171 	int i;
172 
173 	for (i = 0; msp_stdlist[i].name != NULL; i++)
174 		if (msp_stdlist[i].retval == std)
175 			return msp_stdlist[i].name;
176 	return "unknown";
177 }
178 
179 static v4l2_std_id msp_standard_std(int std)
180 {
181 	int i;
182 
183 	for (i = 0; msp_stdlist[i].name != NULL; i++)
184 		if (msp_stdlist[i].retval == std)
185 			return msp_stdlist[i].std;
186 	return V4L2_STD_ALL;
187 }
188 
189 static void msp_set_source(struct i2c_client *client, u16 src)
190 {
191 	struct msp_state *state = to_state(i2c_get_clientdata(client));
192 
193 	if (msp_dolby) {
194 		msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
195 		msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
196 	} else {
197 		msp_write_dsp(client, 0x0008, src);
198 		msp_write_dsp(client, 0x0009, src);
199 	}
200 	msp_write_dsp(client, 0x000a, src);
201 	msp_write_dsp(client, 0x000b, src);
202 	msp_write_dsp(client, 0x000c, src);
203 	if (state->has_scart2_out)
204 		msp_write_dsp(client, 0x0041, src);
205 }
206 
207 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
208 {
209 	msp_write_dem(client, 0x0093, cdo1 & 0xfff);
210 	msp_write_dem(client, 0x009b, cdo1 >> 12);
211 	msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
212 	msp_write_dem(client, 0x00ab, cdo2 >> 12);
213 	msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
214 }
215 
216 void msp3400c_set_mode(struct i2c_client *client, int mode)
217 {
218 	struct msp_state *state = to_state(i2c_get_clientdata(client));
219 	struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
220 	int tuner = (state->route_in >> 3) & 1;
221 	int i;
222 
223 	v4l_dbg(1, msp_debug, client, "set_mode: %d\n", mode);
224 	state->mode = mode;
225 	state->rxsubchans = V4L2_TUNER_SUB_MONO;
226 
227 	msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
228 
229 	for (i = 5; i >= 0; i--)               /* fir 1 */
230 		msp_write_dem(client, 0x0001, data->fir1[i]);
231 
232 	msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
233 	msp_write_dem(client, 0x0005, 0x0040);
234 	msp_write_dem(client, 0x0005, 0x0000);
235 	for (i = 5; i >= 0; i--)
236 		msp_write_dem(client, 0x0005, data->fir2[i]);
237 
238 	msp_write_dem(client, 0x0083, data->mode_reg);
239 
240 	msp3400c_set_carrier(client, data->cdo1, data->cdo2);
241 
242 	msp_set_source(client, data->dsp_src);
243 	/* set prescales */
244 
245 	/* volume prescale for SCART (AM mono input) */
246 	msp_write_dsp(client, 0x000d, 0x1900);
247 	msp_write_dsp(client, 0x000e, data->dsp_matrix);
248 	if (state->has_nicam) /* nicam prescale */
249 		msp_write_dsp(client, 0x0010, 0x5a00);
250 }
251 
252 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
253    nor do they support stereo BTSC. */
254 static void msp3400c_set_audmode(struct i2c_client *client)
255 {
256 	static char *strmode[] = {
257 		"mono", "stereo", "lang2", "lang1", "lang1+lang2"
258 	};
259 	struct msp_state *state = to_state(i2c_get_clientdata(client));
260 	char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
261 		strmode[state->audmode] : "unknown";
262 	int src = 0;	/* channel source: FM/AM, nicam or SCART */
263 	int audmode = state->audmode;
264 
265 	if (state->opmode == OPMODE_AUTOSELECT) {
266 		/* this method would break everything, let's make sure
267 		 * it's never called
268 		 */
269 		v4l_dbg(1, msp_debug, client,
270 			"set_audmode called with mode=%d instead of set_source (ignored)\n",
271 			state->audmode);
272 		return;
273 	}
274 
275 	/* Note: for the C and D revs no NTSC stereo + SAP is possible as
276 	   the hardware does not support SAP. So the rxsubchans combination
277 	   of STEREO | LANG2 does not occur. */
278 
279 	if (state->mode != MSP_MODE_EXTERN) {
280 		/* switch to mono if only mono is available */
281 		if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
282 			audmode = V4L2_TUNER_MODE_MONO;
283 		/* if bilingual */
284 		else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
285 			/* and mono or stereo, then fallback to lang1 */
286 			if (audmode == V4L2_TUNER_MODE_MONO ||
287 			    audmode == V4L2_TUNER_MODE_STEREO)
288 				audmode = V4L2_TUNER_MODE_LANG1;
289 		}
290 		/* if stereo, and audmode is not mono, then switch to stereo */
291 		else if (audmode != V4L2_TUNER_MODE_MONO)
292 			audmode = V4L2_TUNER_MODE_STEREO;
293 	}
294 
295 	/* switch demodulator */
296 	switch (state->mode) {
297 	case MSP_MODE_FM_TERRA:
298 		v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr);
299 		switch (audmode) {
300 		case V4L2_TUNER_MODE_STEREO:
301 			msp_write_dsp(client, 0x000e, 0x3001);
302 			break;
303 		case V4L2_TUNER_MODE_MONO:
304 		case V4L2_TUNER_MODE_LANG1:
305 		case V4L2_TUNER_MODE_LANG2:
306 		case V4L2_TUNER_MODE_LANG1_LANG2:
307 			msp_write_dsp(client, 0x000e, 0x3000);
308 			break;
309 		}
310 		break;
311 	case MSP_MODE_FM_SAT:
312 		v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr);
313 		switch (audmode) {
314 		case V4L2_TUNER_MODE_MONO:
315 			msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
316 			break;
317 		case V4L2_TUNER_MODE_STEREO:
318 		case V4L2_TUNER_MODE_LANG1_LANG2:
319 			msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
320 			break;
321 		case V4L2_TUNER_MODE_LANG1:
322 			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
323 			break;
324 		case V4L2_TUNER_MODE_LANG2:
325 			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
326 			break;
327 		}
328 		break;
329 	case MSP_MODE_FM_NICAM1:
330 	case MSP_MODE_FM_NICAM2:
331 	case MSP_MODE_AM_NICAM:
332 		v4l_dbg(1, msp_debug, client,
333 			"NICAM set_audmode: %s\n", modestr);
334 		if (state->nicam_on)
335 			src = 0x0100;  /* NICAM */
336 		break;
337 	case MSP_MODE_BTSC:
338 		v4l_dbg(1, msp_debug, client,
339 			"BTSC set_audmode: %s\n", modestr);
340 		break;
341 	case MSP_MODE_EXTERN:
342 		v4l_dbg(1, msp_debug, client,
343 			"extern set_audmode: %s\n", modestr);
344 		src = 0x0200;  /* SCART */
345 		break;
346 	case MSP_MODE_FM_RADIO:
347 		v4l_dbg(1, msp_debug, client,
348 			"FM-Radio set_audmode: %s\n", modestr);
349 		break;
350 	default:
351 		v4l_dbg(1, msp_debug, client, "mono set_audmode\n");
352 		return;
353 	}
354 
355 	/* switch audio */
356 	v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode);
357 	switch (audmode) {
358 	case V4L2_TUNER_MODE_STEREO:
359 	case V4L2_TUNER_MODE_LANG1_LANG2:
360 		src |= 0x0020;
361 		break;
362 	case V4L2_TUNER_MODE_MONO:
363 		if (state->mode == MSP_MODE_AM_NICAM) {
364 			v4l_dbg(1, msp_debug, client, "switching to AM mono\n");
365 			/* AM mono decoding is handled by tuner, not MSP chip */
366 			/* SCART switching control register */
367 			msp_set_scart(client, SCART_MONO, 0);
368 			src = 0x0200;
369 			break;
370 		}
371 		if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
372 			src = 0x0030;
373 		break;
374 	case V4L2_TUNER_MODE_LANG1:
375 		break;
376 	case V4L2_TUNER_MODE_LANG2:
377 		src |= 0x0010;
378 		break;
379 	}
380 	v4l_dbg(1, msp_debug, client,
381 		"set_audmode final source/matrix = 0x%x\n", src);
382 
383 	msp_set_source(client, src);
384 }
385 
386 static void msp3400c_print_mode(struct i2c_client *client)
387 {
388 	struct msp_state *state = to_state(i2c_get_clientdata(client));
389 
390 	if (state->main == state->second)
391 		v4l_dbg(1, msp_debug, client,
392 			"mono sound carrier: %d.%03d MHz\n",
393 			state->main / 910000, (state->main / 910) % 1000);
394 	else
395 		v4l_dbg(1, msp_debug, client,
396 			"main sound carrier: %d.%03d MHz\n",
397 			state->main / 910000, (state->main / 910) % 1000);
398 	if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
399 		v4l_dbg(1, msp_debug, client,
400 			"NICAM/FM carrier  : %d.%03d MHz\n",
401 			state->second / 910000, (state->second/910) % 1000);
402 	if (state->mode == MSP_MODE_AM_NICAM)
403 		v4l_dbg(1, msp_debug, client,
404 			"NICAM/AM carrier  : %d.%03d MHz\n",
405 			state->second / 910000, (state->second / 910) % 1000);
406 	if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
407 		v4l_dbg(1, msp_debug, client,
408 			"FM-stereo carrier : %d.%03d MHz\n",
409 			state->second / 910000, (state->second / 910) % 1000);
410 	}
411 }
412 
413 /* ----------------------------------------------------------------------- */
414 
415 static int msp3400c_detect_stereo(struct i2c_client *client)
416 {
417 	struct msp_state *state = to_state(i2c_get_clientdata(client));
418 	int val;
419 	int rxsubchans = state->rxsubchans;
420 	int newnicam = state->nicam_on;
421 	int update = 0;
422 
423 	switch (state->mode) {
424 	case MSP_MODE_FM_TERRA:
425 		val = msp_read_dsp(client, 0x18);
426 		if (val > 32767)
427 			val -= 65536;
428 		v4l_dbg(2, msp_debug, client,
429 			"stereo detect register: %d\n", val);
430 		if (val > 8192) {
431 			rxsubchans = V4L2_TUNER_SUB_STEREO;
432 		} else if (val < -4096) {
433 			rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
434 		} else {
435 			rxsubchans = V4L2_TUNER_SUB_MONO;
436 		}
437 		newnicam = 0;
438 		break;
439 	case MSP_MODE_FM_NICAM1:
440 	case MSP_MODE_FM_NICAM2:
441 	case MSP_MODE_AM_NICAM:
442 		val = msp_read_dem(client, 0x23);
443 		v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
444 			val & 1, (val & 0x1e) >> 1);
445 
446 		if (val & 1) {
447 			/* nicam synced */
448 			switch ((val & 0x1e) >> 1)  {
449 			case 0:
450 			case 8:
451 				rxsubchans = V4L2_TUNER_SUB_STEREO;
452 				break;
453 			case 1:
454 			case 9:
455 				rxsubchans = V4L2_TUNER_SUB_MONO;
456 				break;
457 			case 2:
458 			case 10:
459 				rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
460 				break;
461 			default:
462 				rxsubchans = V4L2_TUNER_SUB_MONO;
463 				break;
464 			}
465 			newnicam = 1;
466 		} else {
467 			newnicam = 0;
468 			rxsubchans = V4L2_TUNER_SUB_MONO;
469 		}
470 		break;
471 	}
472 	if (rxsubchans != state->rxsubchans) {
473 		update = 1;
474 		v4l_dbg(1, msp_debug, client,
475 			"watch: rxsubchans %02x => %02x\n",
476 			state->rxsubchans, rxsubchans);
477 		state->rxsubchans = rxsubchans;
478 	}
479 	if (newnicam != state->nicam_on) {
480 		update = 1;
481 		v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n",
482 			state->nicam_on, newnicam);
483 		state->nicam_on = newnicam;
484 	}
485 	return update;
486 }
487 
488 /*
489  * A kernel thread for msp3400 control -- we don't want to block the
490  * in the ioctl while doing the sound carrier & stereo detect
491  */
492 /* stereo/multilang monitoring */
493 static void watch_stereo(struct i2c_client *client)
494 {
495 	struct msp_state *state = to_state(i2c_get_clientdata(client));
496 
497 	if (msp_detect_stereo(client))
498 		msp_set_audmode(client);
499 
500 	if (msp_once)
501 		state->watch_stereo = 0;
502 }
503 
504 int msp3400c_thread(void *data)
505 {
506 	struct i2c_client *client = data;
507 	struct msp_state *state = to_state(i2c_get_clientdata(client));
508 	struct msp3400c_carrier_detect *cd;
509 	int count, max1, max2, val1, val2, val, i;
510 
511 	v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n");
512 	state->detected_std = V4L2_STD_ALL;
513 	set_freezable();
514 	for (;;) {
515 		v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n");
516 		msp_sleep(state, -1);
517 		v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n");
518 
519 restart:
520 		v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
521 		state->restart = 0;
522 		if (kthread_should_stop())
523 			break;
524 
525 		if (state->radio || MSP_MODE_EXTERN == state->mode) {
526 			/* no carrier scan, just unmute */
527 			v4l_dbg(1, msp_debug, client,
528 				"thread: no carrier scan\n");
529 			state->scan_in_progress = 0;
530 			msp_update_volume(state);
531 			continue;
532 		}
533 
534 		/* mute audio */
535 		state->scan_in_progress = 1;
536 		msp_update_volume(state);
537 
538 		msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
539 		val1 = val2 = 0;
540 		max1 = max2 = -1;
541 		state->watch_stereo = 0;
542 		state->nicam_on = 0;
543 
544 		/* wait for tuner to settle down after a channel change */
545 		if (msp_sleep(state, 200))
546 			goto restart;
547 
548 		/* carrier detect pass #1 -- main carrier */
549 		cd = msp3400c_carrier_detect_main;
550 		count = ARRAY_SIZE(msp3400c_carrier_detect_main);
551 
552 		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
553 			/* autodetect doesn't work well with AM ... */
554 			max1 = 3;
555 			count = 0;
556 			v4l_dbg(1, msp_debug, client, "AM sound override\n");
557 		}
558 
559 		for (i = 0; i < count; i++) {
560 			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
561 			if (msp_sleep(state, 100))
562 				goto restart;
563 			val = msp_read_dsp(client, 0x1b);
564 			if (val > 32767)
565 				val -= 65536;
566 			if (val1 < val)
567 				val1 = val, max1 = i;
568 			v4l_dbg(1, msp_debug, client,
569 				"carrier1 val: %5d / %s\n", val, cd[i].name);
570 		}
571 
572 		/* carrier detect pass #2 -- second (stereo) carrier */
573 		switch (max1) {
574 		case 1: /* 5.5 */
575 			cd = msp3400c_carrier_detect_55;
576 			count = ARRAY_SIZE(msp3400c_carrier_detect_55);
577 			break;
578 		case 3: /* 6.5 */
579 			cd = msp3400c_carrier_detect_65;
580 			count = ARRAY_SIZE(msp3400c_carrier_detect_65);
581 			break;
582 		case 0: /* 4.5 */
583 		case 2: /* 6.0 */
584 		default:
585 			cd = NULL;
586 			count = 0;
587 			break;
588 		}
589 
590 		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
591 			/* autodetect doesn't work well with AM ... */
592 			cd = NULL;
593 			count = 0;
594 			max2 = 0;
595 		}
596 		for (i = 0; i < count; i++) {
597 			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
598 			if (msp_sleep(state, 100))
599 				goto restart;
600 			val = msp_read_dsp(client, 0x1b);
601 			if (val > 32767)
602 				val -= 65536;
603 			if (val2 < val)
604 				val2 = val, max2 = i;
605 			v4l_dbg(1, msp_debug, client,
606 				"carrier2 val: %5d / %s\n", val, cd[i].name);
607 		}
608 
609 		/* program the msp3400 according to the results */
610 		state->main = msp3400c_carrier_detect_main[max1].cdo;
611 		switch (max1) {
612 		case 1: /* 5.5 */
613 			state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
614 			if (max2 == 0) {
615 				/* B/G FM-stereo */
616 				state->second = msp3400c_carrier_detect_55[max2].cdo;
617 				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
618 				state->watch_stereo = 1;
619 			} else if (max2 == 1 && state->has_nicam) {
620 				/* B/G NICAM */
621 				state->second = msp3400c_carrier_detect_55[max2].cdo;
622 				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
623 				state->nicam_on = 1;
624 				state->watch_stereo = 1;
625 			} else {
626 				goto no_second;
627 			}
628 			break;
629 		case 2: /* 6.0 */
630 			/* PAL I NICAM */
631 			state->detected_std = V4L2_STD_PAL_I;
632 			state->second = MSP_CARRIER(6.552);
633 			msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
634 			state->nicam_on = 1;
635 			state->watch_stereo = 1;
636 			break;
637 		case 3: /* 6.5 */
638 			if (max2 == 1 || max2 == 2) {
639 				/* D/K FM-stereo */
640 				state->second = msp3400c_carrier_detect_65[max2].cdo;
641 				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
642 				state->watch_stereo = 1;
643 				state->detected_std = V4L2_STD_DK;
644 			} else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
645 				/* L NICAM or AM-mono */
646 				state->second = msp3400c_carrier_detect_65[max2].cdo;
647 				msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
648 				state->watch_stereo = 1;
649 				state->detected_std = V4L2_STD_L;
650 			} else if (max2 == 0 && state->has_nicam) {
651 				/* D/K NICAM */
652 				state->second = msp3400c_carrier_detect_65[max2].cdo;
653 				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
654 				state->nicam_on = 1;
655 				state->watch_stereo = 1;
656 				state->detected_std = V4L2_STD_DK;
657 			} else {
658 				goto no_second;
659 			}
660 			break;
661 		case 0: /* 4.5 */
662 			state->detected_std = V4L2_STD_MN;
663 		default:
664 no_second:
665 			state->second = msp3400c_carrier_detect_main[max1].cdo;
666 			msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
667 			break;
668 		}
669 		msp3400c_set_carrier(client, state->second, state->main);
670 
671 		/* unmute */
672 		state->scan_in_progress = 0;
673 		msp3400c_set_audmode(client);
674 		msp_update_volume(state);
675 
676 		if (msp_debug)
677 			msp3400c_print_mode(client);
678 
679 		/* monitor tv audio mode, the first time don't wait
680 		   so long to get a quick stereo/bilingual result */
681 		count = 3;
682 		while (state->watch_stereo) {
683 			if (msp_sleep(state, count ? 1000 : 5000))
684 				goto restart;
685 			if (count)
686 				count--;
687 			watch_stereo(client);
688 		}
689 	}
690 	v4l_dbg(1, msp_debug, client, "thread: exit\n");
691 	return 0;
692 }
693 
694 
695 int msp3410d_thread(void *data)
696 {
697 	struct i2c_client *client = data;
698 	struct msp_state *state = to_state(i2c_get_clientdata(client));
699 	int val, i, std, count;
700 
701 	v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n");
702 	state->detected_std = V4L2_STD_ALL;
703 	set_freezable();
704 	for (;;) {
705 		v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n");
706 		msp_sleep(state, -1);
707 		v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n");
708 
709 restart:
710 		v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
711 		state->restart = 0;
712 		if (kthread_should_stop())
713 			break;
714 
715 		if (state->mode == MSP_MODE_EXTERN) {
716 			/* no carrier scan needed, just unmute */
717 			v4l_dbg(1, msp_debug, client,
718 				"thread: no carrier scan\n");
719 			state->scan_in_progress = 0;
720 			msp_update_volume(state);
721 			continue;
722 		}
723 
724 		/* mute audio */
725 		state->scan_in_progress = 1;
726 		msp_update_volume(state);
727 
728 		/* start autodetect. Note: autodetect is not supported for
729 		   NTSC-M and radio, hence we force the standard in those
730 		   cases. */
731 		if (state->radio)
732 			std = 0x40;
733 		else
734 			std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
735 		state->watch_stereo = 0;
736 		state->nicam_on = 0;
737 
738 		/* wait for tuner to settle down after a channel change */
739 		if (msp_sleep(state, 200))
740 			goto restart;
741 
742 		if (msp_debug)
743 			v4l_dbg(2, msp_debug, client,
744 				"setting standard: %s (0x%04x)\n",
745 				msp_standard_std_name(std), std);
746 
747 		if (std != 1) {
748 			/* programmed some specific mode */
749 			val = std;
750 		} else {
751 			/* triggered autodetect */
752 			msp_write_dem(client, 0x20, std);
753 			for (;;) {
754 				if (msp_sleep(state, 100))
755 					goto restart;
756 
757 				/* check results */
758 				val = msp_read_dem(client, 0x7e);
759 				if (val < 0x07ff)
760 					break;
761 				v4l_dbg(2, msp_debug, client,
762 					"detection still in progress\n");
763 			}
764 		}
765 		for (i = 0; msp_stdlist[i].name != NULL; i++)
766 			if (msp_stdlist[i].retval == val)
767 				break;
768 		v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n",
769 			msp_standard_std_name(val), val);
770 		state->main   = msp_stdlist[i].main;
771 		state->second = msp_stdlist[i].second;
772 		state->std = val;
773 		state->rxsubchans = V4L2_TUNER_SUB_MONO;
774 
775 		if (msp_amsound && !state->radio &&
776 		    (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
777 			/* autodetection has failed, let backup */
778 			v4l_dbg(1, msp_debug, client, "autodetection failed,"
779 				" switching to backup standard: %s (0x%04x)\n",
780 				msp_stdlist[8].name ?
781 					msp_stdlist[8].name : "unknown", val);
782 			state->std = val = 0x0009;
783 			msp_write_dem(client, 0x20, val);
784 		} else {
785 			state->detected_std = msp_standard_std(state->std);
786 		}
787 
788 		/* set stereo */
789 		switch (val) {
790 		case 0x0008: /* B/G NICAM */
791 		case 0x000a: /* I NICAM */
792 		case 0x000b: /* D/K NICAM */
793 			if (val == 0x000a)
794 				state->mode = MSP_MODE_FM_NICAM2;
795 			else
796 				state->mode = MSP_MODE_FM_NICAM1;
797 			/* just turn on stereo */
798 			state->nicam_on = 1;
799 			state->watch_stereo = 1;
800 			break;
801 		case 0x0009:
802 			state->mode = MSP_MODE_AM_NICAM;
803 			state->nicam_on = 1;
804 			state->watch_stereo = 1;
805 			break;
806 		case 0x0020: /* BTSC */
807 			/* The pre-'G' models only have BTSC-mono */
808 			state->mode = MSP_MODE_BTSC;
809 			break;
810 		case 0x0040: /* FM radio */
811 			state->mode = MSP_MODE_FM_RADIO;
812 			state->rxsubchans = V4L2_TUNER_SUB_STEREO;
813 			/* not needed in theory if we have radio, but
814 			   short programming enables carrier mute */
815 			msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
816 			msp3400c_set_carrier(client, MSP_CARRIER(10.7),
817 					    MSP_CARRIER(10.7));
818 			break;
819 		case 0x0002:
820 		case 0x0003:
821 		case 0x0004:
822 		case 0x0005:
823 			state->mode = MSP_MODE_FM_TERRA;
824 			state->watch_stereo = 1;
825 			break;
826 		}
827 
828 		/* set various prescales */
829 		msp_write_dsp(client, 0x0d, 0x1900); /* scart */
830 		msp_write_dsp(client, 0x0e, 0x3000); /* FM */
831 		if (state->has_nicam)
832 			msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
833 
834 		if (state->has_i2s_conf)
835 			msp_write_dem(client, 0x40, state->i2s_mode);
836 
837 		/* unmute */
838 		msp3400c_set_audmode(client);
839 		state->scan_in_progress = 0;
840 		msp_update_volume(state);
841 
842 		/* monitor tv audio mode, the first time don't wait
843 		   so long to get a quick stereo/bilingual result */
844 		count = 3;
845 		while (state->watch_stereo) {
846 			if (msp_sleep(state, count ? 1000 : 5000))
847 				goto restart;
848 			if (count)
849 				count--;
850 			watch_stereo(client);
851 		}
852 	}
853 	v4l_dbg(1, msp_debug, client, "thread: exit\n");
854 	return 0;
855 }
856 
857 /* ----------------------------------------------------------------------- */
858 
859 /* msp34xxG + (autoselect no-thread)
860  * this one uses both automatic standard detection and automatic sound
861  * select which are available in the newer G versions
862  * struct msp: only norm, acb and source are really used in this mode
863  */
864 
865 static int msp34xxg_modus(struct i2c_client *client)
866 {
867 	struct msp_state *state = to_state(i2c_get_clientdata(client));
868 
869 	if (state->radio) {
870 		v4l_dbg(1, msp_debug, client, "selected radio modus\n");
871 		return 0x0001;
872 	}
873 	if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
874 		v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n");
875 		return 0x4001;
876 	}
877 	if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
878 		v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n");
879 		return 0x0001;
880 	}
881 	if (state->v4l2_std == V4L2_STD_SECAM_L) {
882 		v4l_dbg(1, msp_debug, client, "selected SECAM-L modus\n");
883 		return 0x6001;
884 	}
885 	if (state->v4l2_std & V4L2_STD_MN) {
886 		v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n");
887 		return 0x2001;
888 	}
889 	return 0x7001;
890 }
891 
892 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
893  {
894 	struct msp_state *state = to_state(i2c_get_clientdata(client));
895 	int source, matrix;
896 
897 	switch (state->audmode) {
898 	case V4L2_TUNER_MODE_MONO:
899 		source = 0; /* mono only */
900 		matrix = 0x30;
901 		break;
902 	case V4L2_TUNER_MODE_LANG2:
903 		source = 4; /* stereo or B */
904 		matrix = 0x10;
905 		break;
906 	case V4L2_TUNER_MODE_LANG1_LANG2:
907 		source = 1; /* stereo or A|B */
908 		matrix = 0x20;
909 		break;
910 	case V4L2_TUNER_MODE_LANG1:
911 		source = 3; /* stereo or A */
912 		matrix = 0x00;
913 		break;
914 	case V4L2_TUNER_MODE_STEREO:
915 	default:
916 		source = 3; /* stereo or A */
917 		matrix = 0x20;
918 		break;
919 	}
920 
921 	if (in == MSP_DSP_IN_TUNER)
922 		source = (source << 8) | 0x20;
923 	/* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
924 	   instead of 11, 12, 13. So we add one for that msp version. */
925 	else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
926 		source = ((in + 1) << 8) | matrix;
927 	else
928 		source = (in << 8) | matrix;
929 
930 	v4l_dbg(1, msp_debug, client,
931 		"set source to %d (0x%x) for output %02x\n", in, source, reg);
932 	msp_write_dsp(client, reg, source);
933 }
934 
935 static void msp34xxg_set_sources(struct i2c_client *client)
936 {
937 	struct msp_state *state = to_state(i2c_get_clientdata(client));
938 	u32 in = state->route_in;
939 
940 	msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
941 	/* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
942 	msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
943 	msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
944 	msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
945 	if (state->has_scart2_out)
946 		msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
947 	msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
948 }
949 
950 /* (re-)initialize the msp34xxg */
951 static void msp34xxg_reset(struct i2c_client *client)
952 {
953 	struct msp_state *state = to_state(i2c_get_clientdata(client));
954 	int tuner = (state->route_in >> 3) & 1;
955 	int modus;
956 
957 	/* initialize std to 1 (autodetect) to signal that no standard is
958 	   selected yet. */
959 	state->std = 1;
960 
961 	msp_reset(client);
962 
963 	if (state->has_i2s_conf)
964 		msp_write_dem(client, 0x40, state->i2s_mode);
965 
966 	/* step-by-step initialisation, as described in the manual */
967 	modus = msp34xxg_modus(client);
968 	modus |= tuner ? 0x100 : 0;
969 	msp_write_dem(client, 0x30, modus);
970 
971 	/* write the dsps that may have an influence on
972 	   standard/audio autodetection right now */
973 	msp34xxg_set_sources(client);
974 
975 	msp_write_dsp(client, 0x0d, 0x1900); /* scart */
976 	msp_write_dsp(client, 0x0e, 0x3000); /* FM */
977 	if (state->has_nicam)
978 		msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
979 
980 	/* set identification threshold. Personally, I
981 	 * I set it to a higher value than the default
982 	 * of 0x190 to ignore noisy stereo signals.
983 	 * this needs tuning. (recommended range 0x00a0-0x03c0)
984 	 * 0x7f0 = forced mono mode
985 	 *
986 	 * a2 threshold for stereo/bilingual.
987 	 * Note: this register is part of the Manual/Compatibility mode.
988 	 * It is supported by all 'G'-family chips.
989 	 */
990 	msp_write_dem(client, 0x22, msp_stereo_thresh);
991 }
992 
993 int msp34xxg_thread(void *data)
994 {
995 	struct i2c_client *client = data;
996 	struct msp_state *state = to_state(i2c_get_clientdata(client));
997 	int val, i;
998 
999 	v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n");
1000 	state->detected_std = V4L2_STD_ALL;
1001 	set_freezable();
1002 	for (;;) {
1003 		v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n");
1004 		msp_sleep(state, -1);
1005 		v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n");
1006 
1007 restart:
1008 		v4l_dbg(1, msp_debug, client, "thread: restart scan\n");
1009 		state->restart = 0;
1010 		if (kthread_should_stop())
1011 			break;
1012 
1013 		if (state->mode == MSP_MODE_EXTERN) {
1014 			/* no carrier scan needed, just unmute */
1015 			v4l_dbg(1, msp_debug, client,
1016 				"thread: no carrier scan\n");
1017 			state->scan_in_progress = 0;
1018 			msp_update_volume(state);
1019 			continue;
1020 		}
1021 
1022 		/* setup the chip*/
1023 		msp34xxg_reset(client);
1024 		state->std = state->radio ? 0x40 :
1025 			(state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
1026 		msp_write_dem(client, 0x20, state->std);
1027 		/* start autodetect */
1028 		if (state->std != 1)
1029 			goto unmute;
1030 
1031 		/* watch autodetect */
1032 		v4l_dbg(1, msp_debug, client,
1033 			"started autodetect, waiting for result\n");
1034 		for (i = 0; i < 10; i++) {
1035 			if (msp_sleep(state, 100))
1036 				goto restart;
1037 
1038 			/* check results */
1039 			val = msp_read_dem(client, 0x7e);
1040 			if (val < 0x07ff) {
1041 				state->std = val;
1042 				break;
1043 			}
1044 			v4l_dbg(2, msp_debug, client,
1045 				"detection still in progress\n");
1046 		}
1047 		if (state->std == 1) {
1048 			v4l_dbg(1, msp_debug, client,
1049 				"detection still in progress after 10 tries. giving up.\n");
1050 			continue;
1051 		}
1052 
1053 unmute:
1054 		v4l_dbg(1, msp_debug, client,
1055 			"detected standard: %s (0x%04x)\n",
1056 			msp_standard_std_name(state->std), state->std);
1057 		state->detected_std = msp_standard_std(state->std);
1058 
1059 		if (state->std == 9) {
1060 			/* AM NICAM mode */
1061 			msp_write_dsp(client, 0x0e, 0x7c00);
1062 		}
1063 
1064 		/* unmute: dispatch sound to scart output, set scart volume */
1065 		msp_update_volume(state);
1066 
1067 		/* restore ACB */
1068 		if (msp_write_dsp(client, 0x13, state->acb))
1069 			return -1;
1070 
1071 		/* the periodic stereo/SAP check is only relevant for
1072 		   the 0x20 standard (BTSC) */
1073 		if (state->std != 0x20)
1074 			continue;
1075 
1076 		state->watch_stereo = 1;
1077 
1078 		/* monitor tv audio mode, the first time don't wait
1079 		   in order to get a quick stereo/SAP update */
1080 		watch_stereo(client);
1081 		while (state->watch_stereo) {
1082 			watch_stereo(client);
1083 			if (msp_sleep(state, 5000))
1084 				goto restart;
1085 		}
1086 	}
1087 	v4l_dbg(1, msp_debug, client, "thread: exit\n");
1088 	return 0;
1089 }
1090 
1091 static int msp34xxg_detect_stereo(struct i2c_client *client)
1092 {
1093 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1094 	int status = msp_read_dem(client, 0x0200);
1095 	int is_bilingual = status & 0x100;
1096 	int is_stereo = status & 0x40;
1097 	int oldrx = state->rxsubchans;
1098 
1099 	if (state->mode == MSP_MODE_EXTERN)
1100 		return 0;
1101 
1102 	state->rxsubchans = 0;
1103 	if (is_stereo)
1104 		state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1105 	else
1106 		state->rxsubchans = V4L2_TUNER_SUB_MONO;
1107 	if (is_bilingual) {
1108 		if (state->std == 0x20)
1109 			state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1110 		else
1111 			state->rxsubchans =
1112 				V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1113 	}
1114 	v4l_dbg(1, msp_debug, client,
1115 		"status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1116 		status, is_stereo, is_bilingual, state->rxsubchans);
1117 	return (oldrx != state->rxsubchans);
1118 }
1119 
1120 static void msp34xxg_set_audmode(struct i2c_client *client)
1121 {
1122 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1123 
1124 	if (state->std == 0x20) {
1125 	       if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1126 		   (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1127 		    state->audmode == V4L2_TUNER_MODE_LANG2)) {
1128 			msp_write_dem(client, 0x20, 0x21);
1129 	       } else {
1130 			msp_write_dem(client, 0x20, 0x20);
1131 	       }
1132 	}
1133 
1134 	msp34xxg_set_sources(client);
1135 }
1136 
1137 void msp_set_audmode(struct i2c_client *client)
1138 {
1139 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1140 
1141 	switch (state->opmode) {
1142 	case OPMODE_MANUAL:
1143 	case OPMODE_AUTODETECT:
1144 		msp3400c_set_audmode(client);
1145 		break;
1146 	case OPMODE_AUTOSELECT:
1147 		msp34xxg_set_audmode(client);
1148 		break;
1149 	}
1150 }
1151 
1152 int msp_detect_stereo(struct i2c_client *client)
1153 {
1154 	struct msp_state *state  = to_state(i2c_get_clientdata(client));
1155 
1156 	switch (state->opmode) {
1157 	case OPMODE_MANUAL:
1158 	case OPMODE_AUTODETECT:
1159 		return msp3400c_detect_stereo(client);
1160 	case OPMODE_AUTOSELECT:
1161 		return msp34xxg_detect_stereo(client);
1162 	}
1163 	return 0;
1164 }
1165 
1166