1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Programming the mspx4xx sound processor family
4  *
5  * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
6  */
7 
8 
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/i2c.h>
12 #include <linux/freezer.h>
13 #include <linux/videodev2.h>
14 #include <media/v4l2-common.h>
15 #include <media/drv-intf/msp3400.h>
16 #include <linux/kthread.h>
17 #include <linux/suspend.h>
18 #include "msp3400-driver.h"
19 
20 /* this one uses the automatic sound standard detection of newer msp34xx
21    chip versions */
22 static struct {
23 	int retval;
24 	int main, second;
25 	char *name;
26 	v4l2_std_id std;
27 } msp_stdlist[] = {
28 	{ 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL },
29 	{ 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL },
30 	{ 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72),
31 	  "4.5/4.72  M Dual FM-Stereo", V4L2_STD_MN },
32 	{ 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875),
33 	  "5.5/5.74  B/G Dual FM-Stereo", V4L2_STD_BG },
34 	{ 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125),
35 	  "6.5/6.25  D/K1 Dual FM-Stereo", V4L2_STD_DK },
36 	{ 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875),
37 	  "6.5/6.74  D/K2 Dual FM-Stereo", V4L2_STD_DK },
38 	{ 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
39 	  "6.5  D/K FM-Mono (HDEV3)", V4L2_STD_DK },
40 	{ 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875),
41 	  "6.5/5.74  D/K3 Dual FM-Stereo", V4L2_STD_DK },
42 	{ 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85),
43 	  "5.5/5.85  B/G NICAM FM", V4L2_STD_BG },
44 	{ 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
45 	  "6.5/5.85  L NICAM AM", V4L2_STD_L },
46 	{ 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55),
47 	  "6.0/6.55  I NICAM FM", V4L2_STD_PAL_I },
48 	{ 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
49 	  "6.5/5.85  D/K NICAM FM", V4L2_STD_DK },
50 	{ 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
51 	  "6.5/5.85  D/K NICAM FM (HDEV2)", V4L2_STD_DK },
52 	{ 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
53 	  "6.5/5.85  D/K NICAM FM (HDEV3)", V4L2_STD_DK },
54 	{ 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
55 	  "4.5  M BTSC-Stereo", V4L2_STD_MTS },
56 	{ 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
57 	  "4.5  M BTSC-Mono + SAP", V4L2_STD_MTS },
58 	{ 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
59 	  "4.5  M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP },
60 	{ 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7),
61 	  "10.7  FM-Stereo Radio", V4L2_STD_ALL },
62 	{ 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
63 	  "6.5  SAT-Mono", V4L2_STD_ALL },
64 	{ 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20),
65 	  "7.02/7.20  SAT-Stereo", V4L2_STD_ALL },
66 	{ 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2),
67 	  "7.2  SAT ADR", V4L2_STD_ALL },
68 	{     -1, 0, 0, NULL, 0 }, /* EOF */
69 };
70 
71 static struct msp3400c_init_data_dem {
72 	int fir1[6];
73 	int fir2[6];
74 	int cdo1;
75 	int cdo2;
76 	int ad_cv;
77 	int mode_reg;
78 	int dsp_src;
79 	int dsp_matrix;
80 } msp3400c_init_data[] = {
81 	{	/* AM (for carrier detect / msp3400) */
82 		{75, 19, 36, 35, 39, 40},
83 		{75, 19, 36, 35, 39, 40},
84 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
85 		0x00d0, 0x0500, 0x0020, 0x3000
86 	}, {	/* AM (for carrier detect / msp3410) */
87 		{-1, -1, -8, 2, 59, 126},
88 		{-1, -1, -8, 2, 59, 126},
89 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
90 		0x00d0, 0x0100, 0x0020, 0x3000
91 	}, {	/* FM Radio */
92 		{-8, -8, 4, 6, 78, 107},
93 		{-8, -8, 4, 6, 78, 107},
94 		MSP_CARRIER(10.7), MSP_CARRIER(10.7),
95 		0x00d0, 0x0480, 0x0020, 0x3000
96 	}, {	/* Terrestrial FM-mono + FM-stereo */
97 		{3, 18, 27, 48, 66, 72},
98 		{3, 18, 27, 48, 66, 72},
99 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
100 		0x00d0, 0x0480, 0x0030, 0x3000
101 	}, {	/* Sat FM-mono */
102 		{ 1, 9, 14, 24, 33, 37},
103 		{ 3, 18, 27, 48, 66, 72},
104 		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
105 		0x00c6, 0x0480, 0x0000, 0x3000
106 	}, {	/* NICAM/FM --  B/G (5.5/5.85), D/K (6.5/5.85) */
107 		{-2, -8, -10, 10, 50, 86},
108 		{3, 18, 27, 48, 66, 72},
109 		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
110 		0x00d0, 0x0040, 0x0120, 0x3000
111 	}, {	/* NICAM/FM -- I (6.0/6.552) */
112 		{2, 4, -6, -4, 40, 94},
113 		{3, 18, 27, 48, 66, 72},
114 		MSP_CARRIER(6.0), MSP_CARRIER(6.0),
115 		0x00d0, 0x0040, 0x0120, 0x3000
116 	}, {	/* NICAM/AM -- L (6.5/5.85) */
117 		{-2, -8, -10, 10, 50, 86},
118 		{-4, -12, -9, 23, 79, 126},
119 		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
120 		0x00c6, 0x0140, 0x0120, 0x7c00
121 	},
122 };
123 
124 struct msp3400c_carrier_detect {
125 	int   cdo;
126 	char *name;
127 };
128 
129 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
130 	/* main carrier */
131 	{ MSP_CARRIER(4.5),        "4.5   NTSC"                   },
132 	{ MSP_CARRIER(5.5),        "5.5   PAL B/G"                },
133 	{ MSP_CARRIER(6.0),        "6.0   PAL I"                  },
134 	{ MSP_CARRIER(6.5),        "6.5   PAL D/K + SAT + SECAM"  }
135 };
136 
137 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
138 	/* PAL B/G */
139 	{ MSP_CARRIER(5.7421875),  "5.742 PAL B/G FM-stereo"     },
140 	{ MSP_CARRIER(5.85),       "5.85  PAL B/G NICAM"         }
141 };
142 
143 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
144 	/* PAL SAT / SECAM */
145 	{ MSP_CARRIER(5.85),       "5.85  PAL D/K + SECAM NICAM" },
146 	{ MSP_CARRIER(6.2578125),  "6.25  PAL D/K1 FM-stereo" },
147 	{ MSP_CARRIER(6.7421875),  "6.74  PAL D/K2 FM-stereo" },
148 	{ MSP_CARRIER(7.02),       "7.02  PAL SAT FM-stereo s/b" },
149 	{ MSP_CARRIER(7.20),       "7.20  PAL SAT FM-stereo s"   },
150 	{ MSP_CARRIER(7.38),       "7.38  PAL SAT FM-stereo b"   },
151 };
152 
153 /* ------------------------------------------------------------------------ */
154 
155 const char *msp_standard_std_name(int std)
156 {
157 	int i;
158 
159 	for (i = 0; msp_stdlist[i].name != NULL; i++)
160 		if (msp_stdlist[i].retval == std)
161 			return msp_stdlist[i].name;
162 	return "unknown";
163 }
164 
165 static v4l2_std_id msp_standard_std(int std)
166 {
167 	int i;
168 
169 	for (i = 0; msp_stdlist[i].name != NULL; i++)
170 		if (msp_stdlist[i].retval == std)
171 			return msp_stdlist[i].std;
172 	return V4L2_STD_ALL;
173 }
174 
175 static void msp_set_source(struct i2c_client *client, u16 src)
176 {
177 	struct msp_state *state = to_state(i2c_get_clientdata(client));
178 
179 	if (msp_dolby) {
180 		msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
181 		msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
182 	} else {
183 		msp_write_dsp(client, 0x0008, src);
184 		msp_write_dsp(client, 0x0009, src);
185 	}
186 	msp_write_dsp(client, 0x000a, src);
187 	msp_write_dsp(client, 0x000b, src);
188 	msp_write_dsp(client, 0x000c, src);
189 	if (state->has_scart2_out)
190 		msp_write_dsp(client, 0x0041, src);
191 }
192 
193 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
194 {
195 	msp_write_dem(client, 0x0093, cdo1 & 0xfff);
196 	msp_write_dem(client, 0x009b, cdo1 >> 12);
197 	msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
198 	msp_write_dem(client, 0x00ab, cdo2 >> 12);
199 	msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
200 }
201 
202 void msp3400c_set_mode(struct i2c_client *client, int mode)
203 {
204 	struct msp_state *state = to_state(i2c_get_clientdata(client));
205 	struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
206 	int tuner = (state->route_in >> 3) & 1;
207 	int i;
208 
209 	dev_dbg_lvl(&client->dev, 1, msp_debug, "set_mode: %d\n", mode);
210 	state->mode = mode;
211 	state->rxsubchans = V4L2_TUNER_SUB_MONO;
212 
213 	msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
214 
215 	for (i = 5; i >= 0; i--)               /* fir 1 */
216 		msp_write_dem(client, 0x0001, data->fir1[i]);
217 
218 	msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
219 	msp_write_dem(client, 0x0005, 0x0040);
220 	msp_write_dem(client, 0x0005, 0x0000);
221 	for (i = 5; i >= 0; i--)
222 		msp_write_dem(client, 0x0005, data->fir2[i]);
223 
224 	msp_write_dem(client, 0x0083, data->mode_reg);
225 
226 	msp3400c_set_carrier(client, data->cdo1, data->cdo2);
227 
228 	msp_set_source(client, data->dsp_src);
229 	/* set prescales */
230 
231 	/* volume prescale for SCART (AM mono input) */
232 	msp_write_dsp(client, 0x000d, 0x1900);
233 	msp_write_dsp(client, 0x000e, data->dsp_matrix);
234 	if (state->has_nicam) /* nicam prescale */
235 		msp_write_dsp(client, 0x0010, 0x5a00);
236 }
237 
238 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
239    nor do they support stereo BTSC. */
240 static void msp3400c_set_audmode(struct i2c_client *client)
241 {
242 	static char *strmode[] = {
243 		"mono", "stereo", "lang2", "lang1", "lang1+lang2"
244 	};
245 	struct msp_state *state = to_state(i2c_get_clientdata(client));
246 	char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
247 		strmode[state->audmode] : "unknown";
248 	int src = 0;	/* channel source: FM/AM, nicam or SCART */
249 	int audmode = state->audmode;
250 
251 	if (state->opmode == OPMODE_AUTOSELECT) {
252 		/* this method would break everything, let's make sure
253 		 * it's never called
254 		 */
255 		dev_dbg_lvl(&client->dev, 1, msp_debug,
256 			"set_audmode called with mode=%d instead of set_source (ignored)\n",
257 			state->audmode);
258 		return;
259 	}
260 
261 	/* Note: for the C and D revs no NTSC stereo + SAP is possible as
262 	   the hardware does not support SAP. So the rxsubchans combination
263 	   of STEREO | LANG2 does not occur. */
264 
265 	if (state->mode != MSP_MODE_EXTERN) {
266 		/* switch to mono if only mono is available */
267 		if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
268 			audmode = V4L2_TUNER_MODE_MONO;
269 		/* if bilingual */
270 		else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
271 			/* and mono or stereo, then fallback to lang1 */
272 			if (audmode == V4L2_TUNER_MODE_MONO ||
273 			    audmode == V4L2_TUNER_MODE_STEREO)
274 				audmode = V4L2_TUNER_MODE_LANG1;
275 		}
276 		/* if stereo, and audmode is not mono, then switch to stereo */
277 		else if (audmode != V4L2_TUNER_MODE_MONO)
278 			audmode = V4L2_TUNER_MODE_STEREO;
279 	}
280 
281 	/* switch demodulator */
282 	switch (state->mode) {
283 	case MSP_MODE_FM_TERRA:
284 		dev_dbg_lvl(&client->dev, 1, msp_debug, "FM set_audmode: %s\n", modestr);
285 		switch (audmode) {
286 		case V4L2_TUNER_MODE_STEREO:
287 			msp_write_dsp(client, 0x000e, 0x3001);
288 			break;
289 		case V4L2_TUNER_MODE_MONO:
290 		case V4L2_TUNER_MODE_LANG1:
291 		case V4L2_TUNER_MODE_LANG2:
292 		case V4L2_TUNER_MODE_LANG1_LANG2:
293 			msp_write_dsp(client, 0x000e, 0x3000);
294 			break;
295 		}
296 		break;
297 	case MSP_MODE_FM_SAT:
298 		dev_dbg_lvl(&client->dev, 1, msp_debug, "SAT set_audmode: %s\n", modestr);
299 		switch (audmode) {
300 		case V4L2_TUNER_MODE_MONO:
301 			msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
302 			break;
303 		case V4L2_TUNER_MODE_STEREO:
304 		case V4L2_TUNER_MODE_LANG1_LANG2:
305 			msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
306 			break;
307 		case V4L2_TUNER_MODE_LANG1:
308 			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
309 			break;
310 		case V4L2_TUNER_MODE_LANG2:
311 			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
312 			break;
313 		}
314 		break;
315 	case MSP_MODE_FM_NICAM1:
316 	case MSP_MODE_FM_NICAM2:
317 	case MSP_MODE_AM_NICAM:
318 		dev_dbg_lvl(&client->dev, 1, msp_debug,
319 			"NICAM set_audmode: %s\n", modestr);
320 		if (state->nicam_on)
321 			src = 0x0100;  /* NICAM */
322 		break;
323 	case MSP_MODE_BTSC:
324 		dev_dbg_lvl(&client->dev, 1, msp_debug,
325 			"BTSC set_audmode: %s\n", modestr);
326 		break;
327 	case MSP_MODE_EXTERN:
328 		dev_dbg_lvl(&client->dev, 1, msp_debug,
329 			"extern set_audmode: %s\n", modestr);
330 		src = 0x0200;  /* SCART */
331 		break;
332 	case MSP_MODE_FM_RADIO:
333 		dev_dbg_lvl(&client->dev, 1, msp_debug,
334 			"FM-Radio set_audmode: %s\n", modestr);
335 		break;
336 	default:
337 		dev_dbg_lvl(&client->dev, 1, msp_debug, "mono set_audmode\n");
338 		return;
339 	}
340 
341 	/* switch audio */
342 	dev_dbg_lvl(&client->dev, 1, msp_debug, "set audmode %d\n", audmode);
343 	switch (audmode) {
344 	case V4L2_TUNER_MODE_STEREO:
345 	case V4L2_TUNER_MODE_LANG1_LANG2:
346 		src |= 0x0020;
347 		break;
348 	case V4L2_TUNER_MODE_MONO:
349 		if (state->mode == MSP_MODE_AM_NICAM) {
350 			dev_dbg_lvl(&client->dev, 1, msp_debug, "switching to AM mono\n");
351 			/* AM mono decoding is handled by tuner, not MSP chip */
352 			/* SCART switching control register */
353 			msp_set_scart(client, SCART_MONO, 0);
354 			src = 0x0200;
355 			break;
356 		}
357 		if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
358 			src = 0x0030;
359 		break;
360 	case V4L2_TUNER_MODE_LANG1:
361 		break;
362 	case V4L2_TUNER_MODE_LANG2:
363 		src |= 0x0010;
364 		break;
365 	}
366 	dev_dbg_lvl(&client->dev, 1, msp_debug,
367 		"set_audmode final source/matrix = 0x%x\n", src);
368 
369 	msp_set_source(client, src);
370 }
371 
372 static void msp3400c_print_mode(struct i2c_client *client)
373 {
374 	struct msp_state *state = to_state(i2c_get_clientdata(client));
375 
376 	if (state->main == state->second)
377 		dev_dbg_lvl(&client->dev, 1, msp_debug,
378 			"mono sound carrier: %d.%03d MHz\n",
379 			state->main / 910000, (state->main / 910) % 1000);
380 	else
381 		dev_dbg_lvl(&client->dev, 1, msp_debug,
382 			"main sound carrier: %d.%03d MHz\n",
383 			state->main / 910000, (state->main / 910) % 1000);
384 	if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
385 		dev_dbg_lvl(&client->dev, 1, msp_debug,
386 			"NICAM/FM carrier  : %d.%03d MHz\n",
387 			state->second / 910000, (state->second/910) % 1000);
388 	if (state->mode == MSP_MODE_AM_NICAM)
389 		dev_dbg_lvl(&client->dev, 1, msp_debug,
390 			"NICAM/AM carrier  : %d.%03d MHz\n",
391 			state->second / 910000, (state->second / 910) % 1000);
392 	if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
393 		dev_dbg_lvl(&client->dev, 1, msp_debug,
394 			"FM-stereo carrier : %d.%03d MHz\n",
395 			state->second / 910000, (state->second / 910) % 1000);
396 	}
397 }
398 
399 /* ----------------------------------------------------------------------- */
400 
401 static int msp3400c_detect_stereo(struct i2c_client *client)
402 {
403 	struct msp_state *state = to_state(i2c_get_clientdata(client));
404 	int val;
405 	int rxsubchans = state->rxsubchans;
406 	int newnicam = state->nicam_on;
407 	int update = 0;
408 
409 	switch (state->mode) {
410 	case MSP_MODE_FM_TERRA:
411 		val = msp_read_dsp(client, 0x18);
412 		if (val > 32767)
413 			val -= 65536;
414 		dev_dbg_lvl(&client->dev, 2, msp_debug,
415 			"stereo detect register: %d\n", val);
416 		if (val > 8192) {
417 			rxsubchans = V4L2_TUNER_SUB_STEREO;
418 		} else if (val < -4096) {
419 			rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
420 		} else {
421 			rxsubchans = V4L2_TUNER_SUB_MONO;
422 		}
423 		newnicam = 0;
424 		break;
425 	case MSP_MODE_FM_NICAM1:
426 	case MSP_MODE_FM_NICAM2:
427 	case MSP_MODE_AM_NICAM:
428 		val = msp_read_dem(client, 0x23);
429 		dev_dbg_lvl(&client->dev, 2, msp_debug, "nicam sync=%d, mode=%d\n",
430 			val & 1, (val & 0x1e) >> 1);
431 
432 		if (val & 1) {
433 			/* nicam synced */
434 			switch ((val & 0x1e) >> 1)  {
435 			case 0:
436 			case 8:
437 				rxsubchans = V4L2_TUNER_SUB_STEREO;
438 				break;
439 			case 1:
440 			case 9:
441 				rxsubchans = V4L2_TUNER_SUB_MONO;
442 				break;
443 			case 2:
444 			case 10:
445 				rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
446 				break;
447 			default:
448 				rxsubchans = V4L2_TUNER_SUB_MONO;
449 				break;
450 			}
451 			newnicam = 1;
452 		} else {
453 			newnicam = 0;
454 			rxsubchans = V4L2_TUNER_SUB_MONO;
455 		}
456 		break;
457 	}
458 	if (rxsubchans != state->rxsubchans) {
459 		update = 1;
460 		dev_dbg_lvl(&client->dev, 1, msp_debug,
461 			"watch: rxsubchans %02x => %02x\n",
462 			state->rxsubchans, rxsubchans);
463 		state->rxsubchans = rxsubchans;
464 	}
465 	if (newnicam != state->nicam_on) {
466 		update = 1;
467 		dev_dbg_lvl(&client->dev, 1, msp_debug, "watch: nicam %d => %d\n",
468 			state->nicam_on, newnicam);
469 		state->nicam_on = newnicam;
470 	}
471 	return update;
472 }
473 
474 /*
475  * A kernel thread for msp3400 control -- we don't want to block the
476  * in the ioctl while doing the sound carrier & stereo detect
477  */
478 /* stereo/multilang monitoring */
479 static void watch_stereo(struct i2c_client *client)
480 {
481 	struct msp_state *state = to_state(i2c_get_clientdata(client));
482 
483 	if (msp_detect_stereo(client))
484 		msp_set_audmode(client);
485 
486 	if (msp_once)
487 		state->watch_stereo = 0;
488 }
489 
490 int msp3400c_thread(void *data)
491 {
492 	struct i2c_client *client = data;
493 	struct msp_state *state = to_state(i2c_get_clientdata(client));
494 	struct msp3400c_carrier_detect *cd;
495 	int count, max1, max2, val1, val2, val, i;
496 
497 	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 daemon started\n");
498 	state->detected_std = V4L2_STD_ALL;
499 	set_freezable();
500 	for (;;) {
501 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: sleep\n");
502 		msp_sleep(state, -1);
503 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: wakeup\n");
504 
505 restart:
506 		dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
507 		state->restart = 0;
508 		if (kthread_should_stop())
509 			break;
510 
511 		if (state->radio || MSP_MODE_EXTERN == state->mode) {
512 			/* no carrier scan, just unmute */
513 			dev_dbg_lvl(&client->dev, 1, msp_debug,
514 				"thread: no carrier scan\n");
515 			state->scan_in_progress = 0;
516 			msp_update_volume(state);
517 			continue;
518 		}
519 
520 		/* mute audio */
521 		state->scan_in_progress = 1;
522 		msp_update_volume(state);
523 
524 		msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
525 		val1 = val2 = 0;
526 		max1 = max2 = -1;
527 		state->watch_stereo = 0;
528 		state->nicam_on = 0;
529 
530 		/* wait for tuner to settle down after a channel change */
531 		if (msp_sleep(state, 200))
532 			goto restart;
533 
534 		/* carrier detect pass #1 -- main carrier */
535 		cd = msp3400c_carrier_detect_main;
536 		count = ARRAY_SIZE(msp3400c_carrier_detect_main);
537 
538 		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
539 			/* autodetect doesn't work well with AM ... */
540 			max1 = 3;
541 			count = 0;
542 			dev_dbg_lvl(&client->dev, 1, msp_debug, "AM sound override\n");
543 		}
544 
545 		for (i = 0; i < count; i++) {
546 			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
547 			if (msp_sleep(state, 100))
548 				goto restart;
549 			val = msp_read_dsp(client, 0x1b);
550 			if (val > 32767)
551 				val -= 65536;
552 			if (val1 < val)
553 				val1 = val, max1 = i;
554 			dev_dbg_lvl(&client->dev, 1, msp_debug,
555 				"carrier1 val: %5d / %s\n", val, cd[i].name);
556 		}
557 
558 		/* carrier detect pass #2 -- second (stereo) carrier */
559 		switch (max1) {
560 		case 1: /* 5.5 */
561 			cd = msp3400c_carrier_detect_55;
562 			count = ARRAY_SIZE(msp3400c_carrier_detect_55);
563 			break;
564 		case 3: /* 6.5 */
565 			cd = msp3400c_carrier_detect_65;
566 			count = ARRAY_SIZE(msp3400c_carrier_detect_65);
567 			break;
568 		case 0: /* 4.5 */
569 		case 2: /* 6.0 */
570 		default:
571 			cd = NULL;
572 			count = 0;
573 			break;
574 		}
575 
576 		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
577 			/* autodetect doesn't work well with AM ... */
578 			cd = NULL;
579 			count = 0;
580 			max2 = 0;
581 		}
582 		for (i = 0; i < count; i++) {
583 			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
584 			if (msp_sleep(state, 100))
585 				goto restart;
586 			val = msp_read_dsp(client, 0x1b);
587 			if (val > 32767)
588 				val -= 65536;
589 			if (val2 < val)
590 				val2 = val, max2 = i;
591 			dev_dbg_lvl(&client->dev, 1, msp_debug,
592 				"carrier2 val: %5d / %s\n", val, cd[i].name);
593 		}
594 
595 		/* program the msp3400 according to the results */
596 		state->main = msp3400c_carrier_detect_main[max1].cdo;
597 		switch (max1) {
598 		case 1: /* 5.5 */
599 			state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
600 			if (max2 == 0) {
601 				/* B/G FM-stereo */
602 				state->second = msp3400c_carrier_detect_55[max2].cdo;
603 				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
604 				state->watch_stereo = 1;
605 			} else if (max2 == 1 && state->has_nicam) {
606 				/* B/G NICAM */
607 				state->second = msp3400c_carrier_detect_55[max2].cdo;
608 				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
609 				state->nicam_on = 1;
610 				state->watch_stereo = 1;
611 			} else {
612 				goto no_second;
613 			}
614 			break;
615 		case 2: /* 6.0 */
616 			/* PAL I NICAM */
617 			state->detected_std = V4L2_STD_PAL_I;
618 			state->second = MSP_CARRIER(6.552);
619 			msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
620 			state->nicam_on = 1;
621 			state->watch_stereo = 1;
622 			break;
623 		case 3: /* 6.5 */
624 			if (max2 == 1 || max2 == 2) {
625 				/* D/K FM-stereo */
626 				state->second = msp3400c_carrier_detect_65[max2].cdo;
627 				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
628 				state->watch_stereo = 1;
629 				state->detected_std = V4L2_STD_DK;
630 			} else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
631 				/* L NICAM or AM-mono */
632 				state->second = msp3400c_carrier_detect_65[max2].cdo;
633 				msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
634 				state->watch_stereo = 1;
635 				state->detected_std = V4L2_STD_L;
636 			} else if (max2 == 0 && state->has_nicam) {
637 				/* D/K NICAM */
638 				state->second = msp3400c_carrier_detect_65[max2].cdo;
639 				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
640 				state->nicam_on = 1;
641 				state->watch_stereo = 1;
642 				state->detected_std = V4L2_STD_DK;
643 			} else {
644 				goto no_second;
645 			}
646 			break;
647 		case 0: /* 4.5 */
648 			state->detected_std = V4L2_STD_MN;
649 			/* fall-through */
650 		default:
651 no_second:
652 			state->second = msp3400c_carrier_detect_main[max1].cdo;
653 			msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
654 			break;
655 		}
656 		msp3400c_set_carrier(client, state->second, state->main);
657 
658 		/* unmute */
659 		state->scan_in_progress = 0;
660 		msp3400c_set_audmode(client);
661 		msp_update_volume(state);
662 
663 		if (msp_debug)
664 			msp3400c_print_mode(client);
665 
666 		/* monitor tv audio mode, the first time don't wait
667 		   so long to get a quick stereo/bilingual result */
668 		count = 3;
669 		while (state->watch_stereo) {
670 			if (msp_sleep(state, count ? 1000 : 5000))
671 				goto restart;
672 			if (count)
673 				count--;
674 			watch_stereo(client);
675 		}
676 	}
677 	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
678 	return 0;
679 }
680 
681 
682 int msp3410d_thread(void *data)
683 {
684 	struct i2c_client *client = data;
685 	struct msp_state *state = to_state(i2c_get_clientdata(client));
686 	int val, i, std, count;
687 
688 	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3410 daemon started\n");
689 	state->detected_std = V4L2_STD_ALL;
690 	set_freezable();
691 	for (;;) {
692 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: sleep\n");
693 		msp_sleep(state, -1);
694 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: wakeup\n");
695 
696 restart:
697 		dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
698 		state->restart = 0;
699 		if (kthread_should_stop())
700 			break;
701 
702 		if (state->mode == MSP_MODE_EXTERN) {
703 			/* no carrier scan needed, just unmute */
704 			dev_dbg_lvl(&client->dev, 1, msp_debug,
705 				"thread: no carrier scan\n");
706 			state->scan_in_progress = 0;
707 			msp_update_volume(state);
708 			continue;
709 		}
710 
711 		/* mute audio */
712 		state->scan_in_progress = 1;
713 		msp_update_volume(state);
714 
715 		/* start autodetect. Note: autodetect is not supported for
716 		   NTSC-M and radio, hence we force the standard in those
717 		   cases. */
718 		if (state->radio)
719 			std = 0x40;
720 		else
721 			std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
722 		state->watch_stereo = 0;
723 		state->nicam_on = 0;
724 
725 		/* wait for tuner to settle down after a channel change */
726 		if (msp_sleep(state, 200))
727 			goto restart;
728 
729 		if (msp_debug)
730 			dev_dbg_lvl(&client->dev, 2, msp_debug,
731 				"setting standard: %s (0x%04x)\n",
732 				msp_standard_std_name(std), std);
733 
734 		if (std != 1) {
735 			/* programmed some specific mode */
736 			val = std;
737 		} else {
738 			/* triggered autodetect */
739 			msp_write_dem(client, 0x20, std);
740 			for (;;) {
741 				if (msp_sleep(state, 100))
742 					goto restart;
743 
744 				/* check results */
745 				val = msp_read_dem(client, 0x7e);
746 				if (val < 0x07ff)
747 					break;
748 				dev_dbg_lvl(&client->dev, 2, msp_debug,
749 					"detection still in progress\n");
750 			}
751 		}
752 		for (i = 0; msp_stdlist[i].name != NULL; i++)
753 			if (msp_stdlist[i].retval == val)
754 				break;
755 		dev_dbg_lvl(&client->dev, 1, msp_debug, "current standard: %s (0x%04x)\n",
756 			msp_standard_std_name(val), val);
757 		state->main   = msp_stdlist[i].main;
758 		state->second = msp_stdlist[i].second;
759 		state->std = val;
760 		state->rxsubchans = V4L2_TUNER_SUB_MONO;
761 
762 		if (msp_amsound && !state->radio &&
763 		    (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
764 			/* autodetection has failed, let backup */
765 			dev_dbg_lvl(&client->dev, 1, msp_debug, "autodetection failed, switching to backup standard: %s (0x%04x)\n",
766 				msp_stdlist[8].name ?
767 					msp_stdlist[8].name : "unknown", val);
768 			state->std = val = 0x0009;
769 			msp_write_dem(client, 0x20, val);
770 		} else {
771 			state->detected_std = msp_standard_std(state->std);
772 		}
773 
774 		/* set stereo */
775 		switch (val) {
776 		case 0x0008: /* B/G NICAM */
777 		case 0x000a: /* I NICAM */
778 		case 0x000b: /* D/K NICAM */
779 			if (val == 0x000a)
780 				state->mode = MSP_MODE_FM_NICAM2;
781 			else
782 				state->mode = MSP_MODE_FM_NICAM1;
783 			/* just turn on stereo */
784 			state->nicam_on = 1;
785 			state->watch_stereo = 1;
786 			break;
787 		case 0x0009:
788 			state->mode = MSP_MODE_AM_NICAM;
789 			state->nicam_on = 1;
790 			state->watch_stereo = 1;
791 			break;
792 		case 0x0020: /* BTSC */
793 			/* The pre-'G' models only have BTSC-mono */
794 			state->mode = MSP_MODE_BTSC;
795 			break;
796 		case 0x0040: /* FM radio */
797 			state->mode = MSP_MODE_FM_RADIO;
798 			state->rxsubchans = V4L2_TUNER_SUB_STEREO;
799 			/* not needed in theory if we have radio, but
800 			   short programming enables carrier mute */
801 			msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
802 			msp3400c_set_carrier(client, MSP_CARRIER(10.7),
803 					    MSP_CARRIER(10.7));
804 			break;
805 		case 0x0002:
806 		case 0x0003:
807 		case 0x0004:
808 		case 0x0005:
809 			state->mode = MSP_MODE_FM_TERRA;
810 			state->watch_stereo = 1;
811 			break;
812 		}
813 
814 		/* set various prescales */
815 		msp_write_dsp(client, 0x0d, 0x1900); /* scart */
816 		msp_write_dsp(client, 0x0e, 0x3000); /* FM */
817 		if (state->has_nicam)
818 			msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
819 
820 		if (state->has_i2s_conf)
821 			msp_write_dem(client, 0x40, state->i2s_mode);
822 
823 		/* unmute */
824 		msp3400c_set_audmode(client);
825 		state->scan_in_progress = 0;
826 		msp_update_volume(state);
827 
828 		/* monitor tv audio mode, the first time don't wait
829 		   so long to get a quick stereo/bilingual result */
830 		count = 3;
831 		while (state->watch_stereo) {
832 			if (msp_sleep(state, count ? 1000 : 5000))
833 				goto restart;
834 			if (count)
835 				count--;
836 			watch_stereo(client);
837 		}
838 	}
839 	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
840 	return 0;
841 }
842 
843 /* ----------------------------------------------------------------------- */
844 
845 /* msp34xxG + (autoselect no-thread)
846  * this one uses both automatic standard detection and automatic sound
847  * select which are available in the newer G versions
848  * struct msp: only norm, acb and source are really used in this mode
849  */
850 
851 static int msp34xxg_modus(struct i2c_client *client)
852 {
853 	struct msp_state *state = to_state(i2c_get_clientdata(client));
854 
855 	if (state->radio) {
856 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected radio modus\n");
857 		return 0x0001;
858 	}
859 	if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
860 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (EIA-J) modus\n");
861 		return 0x4001;
862 	}
863 	if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
864 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (A2) modus\n");
865 		return 0x0001;
866 	}
867 	if (state->v4l2_std == V4L2_STD_SECAM_L) {
868 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected SECAM-L modus\n");
869 		return 0x6001;
870 	}
871 	if (state->v4l2_std & V4L2_STD_MN) {
872 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (BTSC) modus\n");
873 		return 0x2001;
874 	}
875 	return 0x7001;
876 }
877 
878 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
879 {
880 	struct msp_state *state = to_state(i2c_get_clientdata(client));
881 	int source, matrix;
882 
883 	switch (state->audmode) {
884 	case V4L2_TUNER_MODE_MONO:
885 		source = 0; /* mono only */
886 		matrix = 0x30;
887 		break;
888 	case V4L2_TUNER_MODE_LANG2:
889 		source = 4; /* stereo or B */
890 		matrix = 0x10;
891 		break;
892 	case V4L2_TUNER_MODE_LANG1_LANG2:
893 		source = 1; /* stereo or A|B */
894 		matrix = 0x20;
895 		break;
896 	case V4L2_TUNER_MODE_LANG1:
897 		source = 3; /* stereo or A */
898 		matrix = 0x00;
899 		break;
900 	case V4L2_TUNER_MODE_STEREO:
901 	default:
902 		source = 3; /* stereo or A */
903 		matrix = 0x20;
904 		break;
905 	}
906 
907 	if (in == MSP_DSP_IN_TUNER)
908 		source = (source << 8) | 0x20;
909 	/* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
910 	   instead of 11, 12, 13. So we add one for that msp version. */
911 	else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
912 		source = ((in + 1) << 8) | matrix;
913 	else
914 		source = (in << 8) | matrix;
915 
916 	dev_dbg_lvl(&client->dev, 1, msp_debug,
917 		"set source to %d (0x%x) for output %02x\n", in, source, reg);
918 	msp_write_dsp(client, reg, source);
919 }
920 
921 static void msp34xxg_set_sources(struct i2c_client *client)
922 {
923 	struct msp_state *state = to_state(i2c_get_clientdata(client));
924 	u32 in = state->route_in;
925 
926 	msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
927 	/* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
928 	msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
929 	msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
930 	msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
931 	if (state->has_scart2_out)
932 		msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
933 	msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
934 }
935 
936 /* (re-)initialize the msp34xxg */
937 static void msp34xxg_reset(struct i2c_client *client)
938 {
939 	struct msp_state *state = to_state(i2c_get_clientdata(client));
940 	int tuner = (state->route_in >> 3) & 1;
941 	int modus;
942 
943 	/* initialize std to 1 (autodetect) to signal that no standard is
944 	   selected yet. */
945 	state->std = 1;
946 
947 	msp_reset(client);
948 
949 	if (state->has_i2s_conf)
950 		msp_write_dem(client, 0x40, state->i2s_mode);
951 
952 	/* step-by-step initialisation, as described in the manual */
953 	modus = msp34xxg_modus(client);
954 	modus |= tuner ? 0x100 : 0;
955 	msp_write_dem(client, 0x30, modus);
956 
957 	/* write the dsps that may have an influence on
958 	   standard/audio autodetection right now */
959 	msp34xxg_set_sources(client);
960 
961 	msp_write_dsp(client, 0x0d, 0x1900); /* scart */
962 	msp_write_dsp(client, 0x0e, 0x3000); /* FM */
963 	if (state->has_nicam)
964 		msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
965 
966 	/* set identification threshold. Personally, I
967 	 * I set it to a higher value than the default
968 	 * of 0x190 to ignore noisy stereo signals.
969 	 * this needs tuning. (recommended range 0x00a0-0x03c0)
970 	 * 0x7f0 = forced mono mode
971 	 *
972 	 * a2 threshold for stereo/bilingual.
973 	 * Note: this register is part of the Manual/Compatibility mode.
974 	 * It is supported by all 'G'-family chips.
975 	 */
976 	msp_write_dem(client, 0x22, msp_stereo_thresh);
977 }
978 
979 int msp34xxg_thread(void *data)
980 {
981 	struct i2c_client *client = data;
982 	struct msp_state *state = to_state(i2c_get_clientdata(client));
983 	int val, i;
984 
985 	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp34xxg daemon started\n");
986 	state->detected_std = V4L2_STD_ALL;
987 	set_freezable();
988 	for (;;) {
989 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: sleep\n");
990 		msp_sleep(state, -1);
991 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: wakeup\n");
992 
993 restart:
994 		dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: restart scan\n");
995 		state->restart = 0;
996 		if (kthread_should_stop())
997 			break;
998 
999 		if (state->mode == MSP_MODE_EXTERN) {
1000 			/* no carrier scan needed, just unmute */
1001 			dev_dbg_lvl(&client->dev, 1, msp_debug,
1002 				"thread: no carrier scan\n");
1003 			state->scan_in_progress = 0;
1004 			msp_update_volume(state);
1005 			continue;
1006 		}
1007 
1008 		/* setup the chip*/
1009 		msp34xxg_reset(client);
1010 		state->std = state->radio ? 0x40 :
1011 			(state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
1012 		msp_write_dem(client, 0x20, state->std);
1013 		/* start autodetect */
1014 		if (state->std != 1)
1015 			goto unmute;
1016 
1017 		/* watch autodetect */
1018 		dev_dbg_lvl(&client->dev, 1, msp_debug,
1019 			"started autodetect, waiting for result\n");
1020 		for (i = 0; i < 10; i++) {
1021 			if (msp_sleep(state, 100))
1022 				goto restart;
1023 
1024 			/* check results */
1025 			val = msp_read_dem(client, 0x7e);
1026 			if (val < 0x07ff) {
1027 				state->std = val;
1028 				break;
1029 			}
1030 			dev_dbg_lvl(&client->dev, 2, msp_debug,
1031 				"detection still in progress\n");
1032 		}
1033 		if (state->std == 1) {
1034 			dev_dbg_lvl(&client->dev, 1, msp_debug,
1035 				"detection still in progress after 10 tries. giving up.\n");
1036 			continue;
1037 		}
1038 
1039 unmute:
1040 		dev_dbg_lvl(&client->dev, 1, msp_debug,
1041 			"detected standard: %s (0x%04x)\n",
1042 			msp_standard_std_name(state->std), state->std);
1043 		state->detected_std = msp_standard_std(state->std);
1044 
1045 		if (state->std == 9) {
1046 			/* AM NICAM mode */
1047 			msp_write_dsp(client, 0x0e, 0x7c00);
1048 		}
1049 
1050 		/* unmute: dispatch sound to scart output, set scart volume */
1051 		msp_update_volume(state);
1052 
1053 		/* restore ACB */
1054 		if (msp_write_dsp(client, 0x13, state->acb))
1055 			return -1;
1056 
1057 		/* the periodic stereo/SAP check is only relevant for
1058 		   the 0x20 standard (BTSC) */
1059 		if (state->std != 0x20)
1060 			continue;
1061 
1062 		state->watch_stereo = 1;
1063 
1064 		/* monitor tv audio mode, the first time don't wait
1065 		   in order to get a quick stereo/SAP update */
1066 		watch_stereo(client);
1067 		while (state->watch_stereo) {
1068 			watch_stereo(client);
1069 			if (msp_sleep(state, 5000))
1070 				goto restart;
1071 		}
1072 	}
1073 	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
1074 	return 0;
1075 }
1076 
1077 static int msp34xxg_detect_stereo(struct i2c_client *client)
1078 {
1079 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1080 	int status = msp_read_dem(client, 0x0200);
1081 	int is_bilingual = status & 0x100;
1082 	int is_stereo = status & 0x40;
1083 	int oldrx = state->rxsubchans;
1084 
1085 	if (state->mode == MSP_MODE_EXTERN)
1086 		return 0;
1087 
1088 	state->rxsubchans = 0;
1089 	if (is_stereo)
1090 		state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1091 	else
1092 		state->rxsubchans = V4L2_TUNER_SUB_MONO;
1093 	if (is_bilingual) {
1094 		if (state->std == 0x20)
1095 			state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1096 		else
1097 			state->rxsubchans =
1098 				V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1099 	}
1100 	dev_dbg_lvl(&client->dev, 1, msp_debug,
1101 		"status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1102 		status, is_stereo, is_bilingual, state->rxsubchans);
1103 	return (oldrx != state->rxsubchans);
1104 }
1105 
1106 static void msp34xxg_set_audmode(struct i2c_client *client)
1107 {
1108 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1109 
1110 	if (state->std == 0x20) {
1111 	       if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1112 		   (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1113 		    state->audmode == V4L2_TUNER_MODE_LANG2)) {
1114 			msp_write_dem(client, 0x20, 0x21);
1115 	       } else {
1116 			msp_write_dem(client, 0x20, 0x20);
1117 	       }
1118 	}
1119 
1120 	msp34xxg_set_sources(client);
1121 }
1122 
1123 void msp_set_audmode(struct i2c_client *client)
1124 {
1125 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1126 
1127 	switch (state->opmode) {
1128 	case OPMODE_MANUAL:
1129 	case OPMODE_AUTODETECT:
1130 		msp3400c_set_audmode(client);
1131 		break;
1132 	case OPMODE_AUTOSELECT:
1133 		msp34xxg_set_audmode(client);
1134 		break;
1135 	}
1136 }
1137 
1138 int msp_detect_stereo(struct i2c_client *client)
1139 {
1140 	struct msp_state *state  = to_state(i2c_get_clientdata(client));
1141 
1142 	switch (state->opmode) {
1143 	case OPMODE_MANUAL:
1144 	case OPMODE_AUTODETECT:
1145 		return msp3400c_detect_stereo(client);
1146 	case OPMODE_AUTOSELECT:
1147 		return msp34xxg_detect_stereo(client);
1148 	}
1149 	return 0;
1150 }
1151 
1152