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;
554 				max1 = i;
555 			}
556 			dev_dbg_lvl(&client->dev, 1, msp_debug,
557 				"carrier1 val: %5d / %s\n", val, cd[i].name);
558 		}
559 
560 		/* carrier detect pass #2 -- second (stereo) carrier */
561 		switch (max1) {
562 		case 1: /* 5.5 */
563 			cd = msp3400c_carrier_detect_55;
564 			count = ARRAY_SIZE(msp3400c_carrier_detect_55);
565 			break;
566 		case 3: /* 6.5 */
567 			cd = msp3400c_carrier_detect_65;
568 			count = ARRAY_SIZE(msp3400c_carrier_detect_65);
569 			break;
570 		case 0: /* 4.5 */
571 		case 2: /* 6.0 */
572 		default:
573 			cd = NULL;
574 			count = 0;
575 			break;
576 		}
577 
578 		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
579 			/* autodetect doesn't work well with AM ... */
580 			cd = NULL;
581 			count = 0;
582 			max2 = 0;
583 		}
584 		for (i = 0; i < count; i++) {
585 			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
586 			if (msp_sleep(state, 100))
587 				goto restart;
588 			val = msp_read_dsp(client, 0x1b);
589 			if (val > 32767)
590 				val -= 65536;
591 			if (val2 < val) {
592 				val2 = val;
593 				max2 = i;
594 			}
595 			dev_dbg_lvl(&client->dev, 1, msp_debug,
596 				"carrier2 val: %5d / %s\n", val, cd[i].name);
597 		}
598 
599 		/* program the msp3400 according to the results */
600 		state->main = msp3400c_carrier_detect_main[max1].cdo;
601 		switch (max1) {
602 		case 1: /* 5.5 */
603 			state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
604 			if (max2 == 0) {
605 				/* B/G FM-stereo */
606 				state->second = msp3400c_carrier_detect_55[max2].cdo;
607 				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
608 				state->watch_stereo = 1;
609 			} else if (max2 == 1 && state->has_nicam) {
610 				/* B/G NICAM */
611 				state->second = msp3400c_carrier_detect_55[max2].cdo;
612 				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
613 				state->nicam_on = 1;
614 				state->watch_stereo = 1;
615 			} else {
616 				goto no_second;
617 			}
618 			break;
619 		case 2: /* 6.0 */
620 			/* PAL I NICAM */
621 			state->detected_std = V4L2_STD_PAL_I;
622 			state->second = MSP_CARRIER(6.552);
623 			msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
624 			state->nicam_on = 1;
625 			state->watch_stereo = 1;
626 			break;
627 		case 3: /* 6.5 */
628 			if (max2 == 1 || max2 == 2) {
629 				/* D/K FM-stereo */
630 				state->second = msp3400c_carrier_detect_65[max2].cdo;
631 				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
632 				state->watch_stereo = 1;
633 				state->detected_std = V4L2_STD_DK;
634 			} else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
635 				/* L NICAM or AM-mono */
636 				state->second = msp3400c_carrier_detect_65[max2].cdo;
637 				msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
638 				state->watch_stereo = 1;
639 				state->detected_std = V4L2_STD_L;
640 			} else if (max2 == 0 && state->has_nicam) {
641 				/* D/K NICAM */
642 				state->second = msp3400c_carrier_detect_65[max2].cdo;
643 				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
644 				state->nicam_on = 1;
645 				state->watch_stereo = 1;
646 				state->detected_std = V4L2_STD_DK;
647 			} else {
648 				goto no_second;
649 			}
650 			break;
651 		case 0: /* 4.5 */
652 			state->detected_std = V4L2_STD_MN;
653 			fallthrough;
654 		default:
655 no_second:
656 			state->second = msp3400c_carrier_detect_main[max1].cdo;
657 			msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
658 			break;
659 		}
660 		msp3400c_set_carrier(client, state->second, state->main);
661 
662 		/* unmute */
663 		state->scan_in_progress = 0;
664 		msp3400c_set_audmode(client);
665 		msp_update_volume(state);
666 
667 		if (msp_debug)
668 			msp3400c_print_mode(client);
669 
670 		/* monitor tv audio mode, the first time don't wait
671 		   so long to get a quick stereo/bilingual result */
672 		count = 3;
673 		while (state->watch_stereo) {
674 			if (msp_sleep(state, count ? 1000 : 5000))
675 				goto restart;
676 			if (count)
677 				count--;
678 			watch_stereo(client);
679 		}
680 	}
681 	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
682 	return 0;
683 }
684 
685 
686 int msp3410d_thread(void *data)
687 {
688 	struct i2c_client *client = data;
689 	struct msp_state *state = to_state(i2c_get_clientdata(client));
690 	int val, i, std, count;
691 
692 	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3410 daemon started\n");
693 	state->detected_std = V4L2_STD_ALL;
694 	set_freezable();
695 	for (;;) {
696 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: sleep\n");
697 		msp_sleep(state, -1);
698 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: wakeup\n");
699 
700 restart:
701 		dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
702 		state->restart = 0;
703 		if (kthread_should_stop())
704 			break;
705 
706 		if (state->mode == MSP_MODE_EXTERN) {
707 			/* no carrier scan needed, just unmute */
708 			dev_dbg_lvl(&client->dev, 1, msp_debug,
709 				"thread: no carrier scan\n");
710 			state->scan_in_progress = 0;
711 			msp_update_volume(state);
712 			continue;
713 		}
714 
715 		/* mute audio */
716 		state->scan_in_progress = 1;
717 		msp_update_volume(state);
718 
719 		/* start autodetect. Note: autodetect is not supported for
720 		   NTSC-M and radio, hence we force the standard in those
721 		   cases. */
722 		if (state->radio)
723 			std = 0x40;
724 		else
725 			std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
726 		state->watch_stereo = 0;
727 		state->nicam_on = 0;
728 
729 		/* wait for tuner to settle down after a channel change */
730 		if (msp_sleep(state, 200))
731 			goto restart;
732 
733 		if (msp_debug)
734 			dev_dbg_lvl(&client->dev, 2, msp_debug,
735 				"setting standard: %s (0x%04x)\n",
736 				msp_standard_std_name(std), std);
737 
738 		if (std != 1) {
739 			/* programmed some specific mode */
740 			val = std;
741 		} else {
742 			/* triggered autodetect */
743 			msp_write_dem(client, 0x20, std);
744 			for (;;) {
745 				if (msp_sleep(state, 100))
746 					goto restart;
747 
748 				/* check results */
749 				val = msp_read_dem(client, 0x7e);
750 				if (val < 0x07ff)
751 					break;
752 				dev_dbg_lvl(&client->dev, 2, msp_debug,
753 					"detection still in progress\n");
754 			}
755 		}
756 		for (i = 0; msp_stdlist[i].name != NULL; i++)
757 			if (msp_stdlist[i].retval == val)
758 				break;
759 		dev_dbg_lvl(&client->dev, 1, msp_debug, "current standard: %s (0x%04x)\n",
760 			msp_standard_std_name(val), val);
761 		state->main   = msp_stdlist[i].main;
762 		state->second = msp_stdlist[i].second;
763 		state->std = val;
764 		state->rxsubchans = V4L2_TUNER_SUB_MONO;
765 
766 		if (msp_amsound && !state->radio &&
767 		    (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
768 			/* autodetection has failed, let backup */
769 			dev_dbg_lvl(&client->dev, 1, msp_debug, "autodetection failed, switching to backup standard: %s (0x%04x)\n",
770 				msp_stdlist[8].name ?
771 					msp_stdlist[8].name : "unknown", val);
772 			state->std = val = 0x0009;
773 			msp_write_dem(client, 0x20, val);
774 		} else {
775 			state->detected_std = msp_standard_std(state->std);
776 		}
777 
778 		/* set stereo */
779 		switch (val) {
780 		case 0x0008: /* B/G NICAM */
781 		case 0x000a: /* I NICAM */
782 		case 0x000b: /* D/K NICAM */
783 			if (val == 0x000a)
784 				state->mode = MSP_MODE_FM_NICAM2;
785 			else
786 				state->mode = MSP_MODE_FM_NICAM1;
787 			/* just turn on stereo */
788 			state->nicam_on = 1;
789 			state->watch_stereo = 1;
790 			break;
791 		case 0x0009:
792 			state->mode = MSP_MODE_AM_NICAM;
793 			state->nicam_on = 1;
794 			state->watch_stereo = 1;
795 			break;
796 		case 0x0020: /* BTSC */
797 			/* The pre-'G' models only have BTSC-mono */
798 			state->mode = MSP_MODE_BTSC;
799 			break;
800 		case 0x0040: /* FM radio */
801 			state->mode = MSP_MODE_FM_RADIO;
802 			state->rxsubchans = V4L2_TUNER_SUB_STEREO;
803 			/* not needed in theory if we have radio, but
804 			   short programming enables carrier mute */
805 			msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
806 			msp3400c_set_carrier(client, MSP_CARRIER(10.7),
807 					    MSP_CARRIER(10.7));
808 			break;
809 		case 0x0002:
810 		case 0x0003:
811 		case 0x0004:
812 		case 0x0005:
813 			state->mode = MSP_MODE_FM_TERRA;
814 			state->watch_stereo = 1;
815 			break;
816 		}
817 
818 		/* set various prescales */
819 		msp_write_dsp(client, 0x0d, 0x1900); /* scart */
820 		msp_write_dsp(client, 0x0e, 0x3000); /* FM */
821 		if (state->has_nicam)
822 			msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
823 
824 		if (state->has_i2s_conf)
825 			msp_write_dem(client, 0x40, state->i2s_mode);
826 
827 		/* unmute */
828 		msp3400c_set_audmode(client);
829 		state->scan_in_progress = 0;
830 		msp_update_volume(state);
831 
832 		/* monitor tv audio mode, the first time don't wait
833 		   so long to get a quick stereo/bilingual result */
834 		count = 3;
835 		while (state->watch_stereo) {
836 			if (msp_sleep(state, count ? 1000 : 5000))
837 				goto restart;
838 			if (count)
839 				count--;
840 			watch_stereo(client);
841 		}
842 	}
843 	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
844 	return 0;
845 }
846 
847 /* ----------------------------------------------------------------------- */
848 
849 /* msp34xxG + (autoselect no-thread)
850  * this one uses both automatic standard detection and automatic sound
851  * select which are available in the newer G versions
852  * struct msp: only norm, acb and source are really used in this mode
853  */
854 
855 static int msp34xxg_modus(struct i2c_client *client)
856 {
857 	struct msp_state *state = to_state(i2c_get_clientdata(client));
858 
859 	if (state->radio) {
860 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected radio modus\n");
861 		return 0x0001;
862 	}
863 	if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
864 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (EIA-J) modus\n");
865 		return 0x4001;
866 	}
867 	if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
868 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (A2) modus\n");
869 		return 0x0001;
870 	}
871 	if (state->v4l2_std == V4L2_STD_SECAM_L) {
872 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected SECAM-L modus\n");
873 		return 0x6001;
874 	}
875 	if (state->v4l2_std & V4L2_STD_MN) {
876 		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (BTSC) modus\n");
877 		return 0x2001;
878 	}
879 	return 0x7001;
880 }
881 
882 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
883 {
884 	struct msp_state *state = to_state(i2c_get_clientdata(client));
885 	int source, matrix;
886 
887 	switch (state->audmode) {
888 	case V4L2_TUNER_MODE_MONO:
889 		source = 0; /* mono only */
890 		matrix = 0x30;
891 		break;
892 	case V4L2_TUNER_MODE_LANG2:
893 		source = 4; /* stereo or B */
894 		matrix = 0x10;
895 		break;
896 	case V4L2_TUNER_MODE_LANG1_LANG2:
897 		source = 1; /* stereo or A|B */
898 		matrix = 0x20;
899 		break;
900 	case V4L2_TUNER_MODE_LANG1:
901 		source = 3; /* stereo or A */
902 		matrix = 0x00;
903 		break;
904 	case V4L2_TUNER_MODE_STEREO:
905 	default:
906 		source = 3; /* stereo or A */
907 		matrix = 0x20;
908 		break;
909 	}
910 
911 	if (in == MSP_DSP_IN_TUNER)
912 		source = (source << 8) | 0x20;
913 	/* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
914 	   instead of 11, 12, 13. So we add one for that msp version. */
915 	else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
916 		source = ((in + 1) << 8) | matrix;
917 	else
918 		source = (in << 8) | matrix;
919 
920 	dev_dbg_lvl(&client->dev, 1, msp_debug,
921 		"set source to %d (0x%x) for output %02x\n", in, source, reg);
922 	msp_write_dsp(client, reg, source);
923 }
924 
925 static void msp34xxg_set_sources(struct i2c_client *client)
926 {
927 	struct msp_state *state = to_state(i2c_get_clientdata(client));
928 	u32 in = state->route_in;
929 
930 	msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
931 	/* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
932 	msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
933 	msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
934 	msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
935 	if (state->has_scart2_out)
936 		msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
937 	msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
938 }
939 
940 /* (re-)initialize the msp34xxg */
941 static void msp34xxg_reset(struct i2c_client *client)
942 {
943 	struct msp_state *state = to_state(i2c_get_clientdata(client));
944 	int tuner = (state->route_in >> 3) & 1;
945 	int modus;
946 
947 	/* initialize std to 1 (autodetect) to signal that no standard is
948 	   selected yet. */
949 	state->std = 1;
950 
951 	msp_reset(client);
952 
953 	if (state->has_i2s_conf)
954 		msp_write_dem(client, 0x40, state->i2s_mode);
955 
956 	/* step-by-step initialisation, as described in the manual */
957 	modus = msp34xxg_modus(client);
958 	modus |= tuner ? 0x100 : 0;
959 	msp_write_dem(client, 0x30, modus);
960 
961 	/* write the dsps that may have an influence on
962 	   standard/audio autodetection right now */
963 	msp34xxg_set_sources(client);
964 
965 	msp_write_dsp(client, 0x0d, 0x1900); /* scart */
966 	msp_write_dsp(client, 0x0e, 0x3000); /* FM */
967 	if (state->has_nicam)
968 		msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
969 
970 	/* set identification threshold. Personally, I
971 	 * I set it to a higher value than the default
972 	 * of 0x190 to ignore noisy stereo signals.
973 	 * this needs tuning. (recommended range 0x00a0-0x03c0)
974 	 * 0x7f0 = forced mono mode
975 	 *
976 	 * a2 threshold for stereo/bilingual.
977 	 * Note: this register is part of the Manual/Compatibility mode.
978 	 * It is supported by all 'G'-family chips.
979 	 */
980 	msp_write_dem(client, 0x22, msp_stereo_thresh);
981 }
982 
983 int msp34xxg_thread(void *data)
984 {
985 	struct i2c_client *client = data;
986 	struct msp_state *state = to_state(i2c_get_clientdata(client));
987 	int val, i;
988 
989 	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp34xxg daemon started\n");
990 	state->detected_std = V4L2_STD_ALL;
991 	set_freezable();
992 	for (;;) {
993 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: sleep\n");
994 		msp_sleep(state, -1);
995 		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: wakeup\n");
996 
997 restart:
998 		dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: restart scan\n");
999 		state->restart = 0;
1000 		if (kthread_should_stop())
1001 			break;
1002 
1003 		if (state->mode == MSP_MODE_EXTERN) {
1004 			/* no carrier scan needed, just unmute */
1005 			dev_dbg_lvl(&client->dev, 1, msp_debug,
1006 				"thread: no carrier scan\n");
1007 			state->scan_in_progress = 0;
1008 			msp_update_volume(state);
1009 			continue;
1010 		}
1011 
1012 		/* setup the chip*/
1013 		msp34xxg_reset(client);
1014 		state->std = state->radio ? 0x40 :
1015 			(state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
1016 		msp_write_dem(client, 0x20, state->std);
1017 		/* start autodetect */
1018 		if (state->std != 1)
1019 			goto unmute;
1020 
1021 		/* watch autodetect */
1022 		dev_dbg_lvl(&client->dev, 1, msp_debug,
1023 			"started autodetect, waiting for result\n");
1024 		for (i = 0; i < 10; i++) {
1025 			if (msp_sleep(state, 100))
1026 				goto restart;
1027 
1028 			/* check results */
1029 			val = msp_read_dem(client, 0x7e);
1030 			if (val < 0x07ff) {
1031 				state->std = val;
1032 				break;
1033 			}
1034 			dev_dbg_lvl(&client->dev, 2, msp_debug,
1035 				"detection still in progress\n");
1036 		}
1037 		if (state->std == 1) {
1038 			dev_dbg_lvl(&client->dev, 1, msp_debug,
1039 				"detection still in progress after 10 tries. giving up.\n");
1040 			continue;
1041 		}
1042 
1043 unmute:
1044 		dev_dbg_lvl(&client->dev, 1, msp_debug,
1045 			"detected standard: %s (0x%04x)\n",
1046 			msp_standard_std_name(state->std), state->std);
1047 		state->detected_std = msp_standard_std(state->std);
1048 
1049 		if (state->std == 9) {
1050 			/* AM NICAM mode */
1051 			msp_write_dsp(client, 0x0e, 0x7c00);
1052 		}
1053 
1054 		/* unmute: dispatch sound to scart output, set scart volume */
1055 		msp_update_volume(state);
1056 
1057 		/* restore ACB */
1058 		if (msp_write_dsp(client, 0x13, state->acb))
1059 			return -1;
1060 
1061 		/* the periodic stereo/SAP check is only relevant for
1062 		   the 0x20 standard (BTSC) */
1063 		if (state->std != 0x20)
1064 			continue;
1065 
1066 		state->watch_stereo = 1;
1067 
1068 		/* monitor tv audio mode, the first time don't wait
1069 		   in order to get a quick stereo/SAP update */
1070 		watch_stereo(client);
1071 		while (state->watch_stereo) {
1072 			watch_stereo(client);
1073 			if (msp_sleep(state, 5000))
1074 				goto restart;
1075 		}
1076 	}
1077 	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
1078 	return 0;
1079 }
1080 
1081 static int msp34xxg_detect_stereo(struct i2c_client *client)
1082 {
1083 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1084 	int status = msp_read_dem(client, 0x0200);
1085 	int is_bilingual = status & 0x100;
1086 	int is_stereo = status & 0x40;
1087 	int oldrx = state->rxsubchans;
1088 
1089 	if (state->mode == MSP_MODE_EXTERN)
1090 		return 0;
1091 
1092 	state->rxsubchans = 0;
1093 	if (is_stereo)
1094 		state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1095 	else
1096 		state->rxsubchans = V4L2_TUNER_SUB_MONO;
1097 	if (is_bilingual) {
1098 		if (state->std == 0x20)
1099 			state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1100 		else
1101 			state->rxsubchans =
1102 				V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1103 	}
1104 	dev_dbg_lvl(&client->dev, 1, msp_debug,
1105 		"status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1106 		status, is_stereo, is_bilingual, state->rxsubchans);
1107 	return (oldrx != state->rxsubchans);
1108 }
1109 
1110 static void msp34xxg_set_audmode(struct i2c_client *client)
1111 {
1112 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1113 
1114 	if (state->std == 0x20) {
1115 	       if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1116 		   (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1117 		    state->audmode == V4L2_TUNER_MODE_LANG2)) {
1118 			msp_write_dem(client, 0x20, 0x21);
1119 	       } else {
1120 			msp_write_dem(client, 0x20, 0x20);
1121 	       }
1122 	}
1123 
1124 	msp34xxg_set_sources(client);
1125 }
1126 
1127 void msp_set_audmode(struct i2c_client *client)
1128 {
1129 	struct msp_state *state = to_state(i2c_get_clientdata(client));
1130 
1131 	switch (state->opmode) {
1132 	case OPMODE_MANUAL:
1133 	case OPMODE_AUTODETECT:
1134 		msp3400c_set_audmode(client);
1135 		break;
1136 	case OPMODE_AUTOSELECT:
1137 		msp34xxg_set_audmode(client);
1138 		break;
1139 	}
1140 }
1141 
1142 int msp_detect_stereo(struct i2c_client *client)
1143 {
1144 	struct msp_state *state  = to_state(i2c_get_clientdata(client));
1145 
1146 	switch (state->opmode) {
1147 	case OPMODE_MANUAL:
1148 	case OPMODE_AUTODETECT:
1149 		return msp3400c_detect_stereo(client);
1150 	case OPMODE_AUTOSELECT:
1151 		return msp34xxg_detect_stereo(client);
1152 	}
1153 	return 0;
1154 }
1155 
1156