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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / i2c / msp3400-kthreads.c
blobd3b0d1c18efdb4dac8d1142c63284c7d0aeb59eb
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
Linux with added FPC-III support