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added 2.6.29.6 aldebaran kernel
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / drivers / media / video / msp3400-kthreads.c
bloba655e9c30146a986e7f95e1e4ba0d4fe25328c57
1 /*
2 * Programming the mspx4xx sound processor family
3 *
4 * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 * 02110-1301, USA.
20 */
21
22
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/slab.h>
26 #include <linux/i2c.h>
27 #include <linux/freezer.h>
28 #include <linux/videodev2.h>
29 #include <media/v4l2-common.h>
30 #include <media/msp3400.h>
31 #include <linux/kthread.h>
32 #include <linux/suspend.h>
33 #include "msp3400-driver.h"
34
35 /* this one uses the automatic sound standard detection of newer msp34xx
36 chip versions */
37 static struct {
38 int retval;
39 int main, second;
40 char *name;
41 } msp_stdlist[] = {
42 { 0x0000, 0, 0, "could not detect sound standard" },
43 { 0x0001, 0, 0, "autodetect start" },
44 { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72), "4.5/4.72 M Dual FM-Stereo" },
45 { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875), "5.5/5.74 B/G Dual FM-Stereo" },
46 { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125), "6.5/6.25 D/K1 Dual FM-Stereo" },
47 { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875), "6.5/6.74 D/K2 Dual FM-Stereo" },
48 { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 D/K FM-Mono (HDEV3)" },
49 { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875), "6.5/5.74 D/K3 Dual FM-Stereo" },
50 { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85), "5.5/5.85 B/G NICAM FM" },
51 { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 L NICAM AM" },
52 { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55), "6.0/6.55 I NICAM FM" },
53 { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM" },
54 { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV2)" },
55 { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV3)" },
56 { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Stereo" },
57 { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Mono + SAP" },
58 { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M EIA-J Japan Stereo" },
59 { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7), "10.7 FM-Stereo Radio" },
60 { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 SAT-Mono" },
61 { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20), "7.02/7.20 SAT-Stereo" },
62 { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2), "7.2 SAT ADR" },
63 { -1, 0, 0, NULL }, /* EOF */
64 };
65
66 static struct msp3400c_init_data_dem {
67 int fir1[6];
68 int fir2[6];
69 int cdo1;
70 int cdo2;
71 int ad_cv;
72 int mode_reg;
73 int dsp_src;
74 int dsp_matrix;
75 } msp3400c_init_data[] = {
76 { /* AM (for carrier detect / msp3400) */
77 {75, 19, 36, 35, 39, 40},
78 {75, 19, 36, 35, 39, 40},
79 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
80 0x00d0, 0x0500, 0x0020, 0x3000
81 }, { /* AM (for carrier detect / msp3410) */
82 {-1, -1, -8, 2, 59, 126},
83 {-1, -1, -8, 2, 59, 126},
84 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
85 0x00d0, 0x0100, 0x0020, 0x3000
86 }, { /* FM Radio */
87 {-8, -8, 4, 6, 78, 107},
88 {-8, -8, 4, 6, 78, 107},
89 MSP_CARRIER(10.7), MSP_CARRIER(10.7),
90 0x00d0, 0x0480, 0x0020, 0x3000
91 }, { /* Terrestial FM-mono + FM-stereo */
92 {3, 18, 27, 48, 66, 72},
93 {3, 18, 27, 48, 66, 72},
94 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
95 0x00d0, 0x0480, 0x0030, 0x3000
96 }, { /* Sat FM-mono */
97 { 1, 9, 14, 24, 33, 37},
98 { 3, 18, 27, 48, 66, 72},
99 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
100 0x00c6, 0x0480, 0x0000, 0x3000
101 }, { /* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */
102 {-2, -8, -10, 10, 50, 86},
103 {3, 18, 27, 48, 66, 72},
104 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
105 0x00d0, 0x0040, 0x0120, 0x3000
106 }, { /* NICAM/FM -- I (6.0/6.552) */
107 {2, 4, -6, -4, 40, 94},
108 {3, 18, 27, 48, 66, 72},
109 MSP_CARRIER(6.0), MSP_CARRIER(6.0),
110 0x00d0, 0x0040, 0x0120, 0x3000
111 }, { /* NICAM/AM -- L (6.5/5.85) */
112 {-2, -8, -10, 10, 50, 86},
113 {-4, -12, -9, 23, 79, 126},
114 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
115 0x00c6, 0x0140, 0x0120, 0x7c00
116 },
117 };
118
119 struct msp3400c_carrier_detect {
120 int cdo;
121 char *name;
122 };
123
124 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
125 /* main carrier */
126 { MSP_CARRIER(4.5), "4.5 NTSC" },
127 { MSP_CARRIER(5.5), "5.5 PAL B/G" },
128 { MSP_CARRIER(6.0), "6.0 PAL I" },
129 { MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" }
130 };
131
132 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
133 /* PAL B/G */
134 { MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
135 { MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
136 };
137
138 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
139 /* PAL SAT / SECAM */
140 { MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" },
141 { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
142 { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
143 { MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
144 { MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
145 { MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
146 };
147
148 /* ------------------------------------------------------------------------ */
149
150 const char *msp_standard_std_name(int std)
151 {
152 int i;
153
154 for (i = 0; msp_stdlist[i].name != NULL; i++)
155 if (msp_stdlist[i].retval == std)
156 return msp_stdlist[i].name;
157 return "unknown";
158 }
159
160 static void msp_set_source(struct i2c_client *client, u16 src)
161 {
162 struct msp_state *state = to_state(i2c_get_clientdata(client));
163
164 if (msp_dolby) {
165 msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
166 msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
167 } else {
168 msp_write_dsp(client, 0x0008, src);
169 msp_write_dsp(client, 0x0009, src);
170 }
171 msp_write_dsp(client, 0x000a, src);
172 msp_write_dsp(client, 0x000b, src);
173 msp_write_dsp(client, 0x000c, src);
174 if (state->has_scart2_out)
175 msp_write_dsp(client, 0x0041, src);
176 }
177
178 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
179 {
180 msp_write_dem(client, 0x0093, cdo1 & 0xfff);
181 msp_write_dem(client, 0x009b, cdo1 >> 12);
182 msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
183 msp_write_dem(client, 0x00ab, cdo2 >> 12);
184 msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
185 }
186
187 void msp3400c_set_mode(struct i2c_client *client, int mode)
188 {
189 struct msp_state *state = to_state(i2c_get_clientdata(client));
190 struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
191 int tuner = (state->routing.input >> 3) & 1;
192 int i;
193
194 v4l_dbg(1, msp_debug, client, "set_mode: %d\n", mode);
195 state->mode = mode;
196 state->rxsubchans = V4L2_TUNER_SUB_MONO;
197
198 msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
199
200 for (i = 5; i >= 0; i--) /* fir 1 */
201 msp_write_dem(client, 0x0001, data->fir1[i]);
202
203 msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
204 msp_write_dem(client, 0x0005, 0x0040);
205 msp_write_dem(client, 0x0005, 0x0000);
206 for (i = 5; i >= 0; i--)
207 msp_write_dem(client, 0x0005, data->fir2[i]);
208
209 msp_write_dem(client, 0x0083, data->mode_reg);
210
211 msp3400c_set_carrier(client, data->cdo1, data->cdo2);
212
213 msp_set_source(client, data->dsp_src);
214 /* set prescales */
215
216 /* volume prescale for SCART (AM mono input) */
217 msp_write_dsp(client, 0x000d, 0x1900);
218 msp_write_dsp(client, 0x000e, data->dsp_matrix);
219 if (state->has_nicam) /* nicam prescale */
220 msp_write_dsp(client, 0x0010, 0x5a00);
221 }
222
223 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
224 nor do they support stereo BTSC. */
225 static void msp3400c_set_audmode(struct i2c_client *client)
226 {
227 static char *strmode[] = {
228 "mono", "stereo", "lang2", "lang1", "lang1+lang2"
229 };
230 struct msp_state *state = to_state(i2c_get_clientdata(client));
231 char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
232 strmode[state->audmode] : "unknown";
233 int src = 0; /* channel source: FM/AM, nicam or SCART */
234 int audmode = state->audmode;
235
236 if (state->opmode == OPMODE_AUTOSELECT) {
237 /* this method would break everything, let's make sure
238 * it's never called
239 */
240 v4l_dbg(1, msp_debug, client,
241 "set_audmode called with mode=%d instead of set_source (ignored)\n",
242 state->audmode);
243 return;
244 }
245
246 /* Note: for the C and D revs no NTSC stereo + SAP is possible as
247 the hardware does not support SAP. So the rxsubchans combination
248 of STEREO | LANG2 does not occur. */
249
250 if (state->mode != MSP_MODE_EXTERN) {
251 /* switch to mono if only mono is available */
252 if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
253 audmode = V4L2_TUNER_MODE_MONO;
254 /* if bilingual */
255 else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
256 /* and mono or stereo, then fallback to lang1 */
257 if (audmode == V4L2_TUNER_MODE_MONO ||
258 audmode == V4L2_TUNER_MODE_STEREO)
259 audmode = V4L2_TUNER_MODE_LANG1;
260 }
261 /* if stereo, and audmode is not mono, then switch to stereo */
262 else if (audmode != V4L2_TUNER_MODE_MONO)
263 audmode = V4L2_TUNER_MODE_STEREO;
264 }
265
266 /* switch demodulator */
267 switch (state->mode) {
268 case MSP_MODE_FM_TERRA:
269 v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr);
270 switch (audmode) {
271 case V4L2_TUNER_MODE_STEREO:
272 msp_write_dsp(client, 0x000e, 0x3001);
273 break;
274 case V4L2_TUNER_MODE_MONO:
275 case V4L2_TUNER_MODE_LANG1:
276 case V4L2_TUNER_MODE_LANG2:
277 case V4L2_TUNER_MODE_LANG1_LANG2:
278 msp_write_dsp(client, 0x000e, 0x3000);
279 break;
280 }
281 break;
282 case MSP_MODE_FM_SAT:
283 v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr);
284 switch (audmode) {
285 case V4L2_TUNER_MODE_MONO:
286 msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
287 break;
288 case V4L2_TUNER_MODE_STEREO:
289 case V4L2_TUNER_MODE_LANG1_LANG2:
290 msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
291 break;
292 case V4L2_TUNER_MODE_LANG1:
293 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
294 break;
295 case V4L2_TUNER_MODE_LANG2:
296 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
297 break;
298 }
299 break;
300 case MSP_MODE_FM_NICAM1:
301 case MSP_MODE_FM_NICAM2:
302 case MSP_MODE_AM_NICAM:
303 v4l_dbg(1, msp_debug, client,
304 "NICAM set_audmode: %s\n", modestr);
305 if (state->nicam_on)
306 src = 0x0100; /* NICAM */
307 break;
308 case MSP_MODE_BTSC:
309 v4l_dbg(1, msp_debug, client,
310 "BTSC set_audmode: %s\n", modestr);
311 break;
312 case MSP_MODE_EXTERN:
313 v4l_dbg(1, msp_debug, client,
314 "extern set_audmode: %s\n", modestr);
315 src = 0x0200; /* SCART */
316 break;
317 case MSP_MODE_FM_RADIO:
318 v4l_dbg(1, msp_debug, client,
319 "FM-Radio set_audmode: %s\n", modestr);
320 break;
321 default:
322 v4l_dbg(1, msp_debug, client, "mono set_audmode\n");
323 return;
324 }
325
326 /* switch audio */
327 v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode);
328 switch (audmode) {
329 case V4L2_TUNER_MODE_STEREO:
330 case V4L2_TUNER_MODE_LANG1_LANG2:
331 src |= 0x0020;
332 break;
333 case V4L2_TUNER_MODE_MONO:
334 if (state->mode == MSP_MODE_AM_NICAM) {
335 v4l_dbg(1, msp_debug, client, "switching to AM mono\n");
336 /* AM mono decoding is handled by tuner, not MSP chip */
337 /* SCART switching control register */
338 msp_set_scart(client, SCART_MONO, 0);
339 src = 0x0200;
340 break;
341 }
342 if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
343 src = 0x0030;
344 break;
345 case V4L2_TUNER_MODE_LANG1:
346 break;
347 case V4L2_TUNER_MODE_LANG2:
348 src |= 0x0010;
349 break;
350 }
351 v4l_dbg(1, msp_debug, client,
352 "set_audmode final source/matrix = 0x%x\n", src);
353
354 msp_set_source(client, src);
355 }
356
357 static void msp3400c_print_mode(struct i2c_client *client)
358 {
359 struct msp_state *state = to_state(i2c_get_clientdata(client));
360
361 if (state->main == state->second)
362 v4l_dbg(1, msp_debug, client,
363 "mono sound carrier: %d.%03d MHz\n",
364 state->main / 910000, (state->main / 910) % 1000);
365 else
366 v4l_dbg(1, msp_debug, client,
367 "main sound carrier: %d.%03d MHz\n",
368 state->main / 910000, (state->main / 910) % 1000);
369 if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
370 v4l_dbg(1, msp_debug, client,
371 "NICAM/FM carrier : %d.%03d MHz\n",
372 state->second / 910000, (state->second/910) % 1000);
373 if (state->mode == MSP_MODE_AM_NICAM)
374 v4l_dbg(1, msp_debug, client,
375 "NICAM/AM carrier : %d.%03d MHz\n",
376 state->second / 910000, (state->second / 910) % 1000);
377 if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
378 v4l_dbg(1, msp_debug, client,
379 "FM-stereo carrier : %d.%03d MHz\n",
380 state->second / 910000, (state->second / 910) % 1000);
381 }
382 }
383
384 /* ----------------------------------------------------------------------- */
385
386 static int msp3400c_detect_stereo(struct i2c_client *client)
387 {
388 struct msp_state *state = to_state(i2c_get_clientdata(client));
389 int val;
390 int rxsubchans = state->rxsubchans;
391 int newnicam = state->nicam_on;
392 int update = 0;
393
394 switch (state->mode) {
395 case MSP_MODE_FM_TERRA:
396 val = msp_read_dsp(client, 0x18);
397 if (val > 32767)
398 val -= 65536;
399 v4l_dbg(2, msp_debug, client,
400 "stereo detect register: %d\n", val);
401 if (val > 8192) {
402 rxsubchans = V4L2_TUNER_SUB_STEREO;
403 } else if (val < -4096) {
404 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
405 } else {
406 rxsubchans = V4L2_TUNER_SUB_MONO;
407 }
408 newnicam = 0;
409 break;
410 case MSP_MODE_FM_NICAM1:
411 case MSP_MODE_FM_NICAM2:
412 case MSP_MODE_AM_NICAM:
413 val = msp_read_dem(client, 0x23);
414 v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
415 val & 1, (val & 0x1e) >> 1);
416
417 if (val & 1) {
418 /* nicam synced */
419 switch ((val & 0x1e) >> 1) {
420 case 0:
421 case 8:
422 rxsubchans = V4L2_TUNER_SUB_STEREO;
423 break;
424 case 1:
425 case 9:
426 rxsubchans = V4L2_TUNER_SUB_MONO;
427 break;
428 case 2:
429 case 10:
430 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
431 break;
432 default:
433 rxsubchans = V4L2_TUNER_SUB_MONO;
434 break;
435 }
436 newnicam = 1;
437 } else {
438 newnicam = 0;
439 rxsubchans = V4L2_TUNER_SUB_MONO;
440 }
441 break;
442 }
443 if (rxsubchans != state->rxsubchans) {
444 update = 1;
445 v4l_dbg(1, msp_debug, client,
446 "watch: rxsubchans %02x => %02x\n",
447 state->rxsubchans, rxsubchans);
448 state->rxsubchans = rxsubchans;
449 }
450 if (newnicam != state->nicam_on) {
451 update = 1;
452 v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n",
453 state->nicam_on, newnicam);
454 state->nicam_on = newnicam;
455 }
456 return update;
457 }
458
459 /*
460 * A kernel thread for msp3400 control -- we don't want to block the
461 * in the ioctl while doing the sound carrier & stereo detect
462 */
463 /* stereo/multilang monitoring */
464 static void watch_stereo(struct i2c_client *client)
465 {
466 struct msp_state *state = to_state(i2c_get_clientdata(client));
467
468 if (msp_detect_stereo(client))
469 msp_set_audmode(client);
470
471 if (msp_once)
472 state->watch_stereo = 0;
473 }
474
475 int msp3400c_thread(void *data)
476 {
477 struct i2c_client *client = data;
478 struct msp_state *state = to_state(i2c_get_clientdata(client));
479 struct msp3400c_carrier_detect *cd;
480 int count, max1, max2, val1, val2, val, i;
481
482 v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n");
483 set_freezable();
484 for (;;) {
485 v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n");
486 msp_sleep(state, -1);
487 v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n");
488
489 restart:
490 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
491 state->restart = 0;
492 if (kthread_should_stop())
493 break;
494
495 if (state->radio || MSP_MODE_EXTERN == state->mode) {
496 /* no carrier scan, just unmute */
497 v4l_dbg(1, msp_debug, client,
498 "thread: no carrier scan\n");
499 state->scan_in_progress = 0;
500 msp_set_audio(client);
501 continue;
502 }
503
504 /* mute audio */
505 state->scan_in_progress = 1;
506 msp_set_audio(client);
507
508 msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
509 val1 = val2 = 0;
510 max1 = max2 = -1;
511 state->watch_stereo = 0;
512 state->nicam_on = 0;
513
514 /* wait for tuner to settle down after a channel change */
515 if (msp_sleep(state, 200))
516 goto restart;
517
518 /* carrier detect pass #1 -- main carrier */
519 cd = msp3400c_carrier_detect_main;
520 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
521
522 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
523 /* autodetect doesn't work well with AM ... */
524 max1 = 3;
525 count = 0;
526 v4l_dbg(1, msp_debug, client, "AM sound override\n");
527 }
528
529 for (i = 0; i < count; i++) {
530 msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
531 if (msp_sleep(state, 100))
532 goto restart;
533 val = msp_read_dsp(client, 0x1b);
534 if (val > 32767)
535 val -= 65536;
536 if (val1 < val)
537 val1 = val, max1 = i;
538 v4l_dbg(1, msp_debug, client,
539 "carrier1 val: %5d / %s\n", val, cd[i].name);
540 }
541
542 /* carrier detect pass #2 -- second (stereo) carrier */
543 switch (max1) {
544 case 1: /* 5.5 */
545 cd = msp3400c_carrier_detect_55;
546 count = ARRAY_SIZE(msp3400c_carrier_detect_55);
547 break;
548 case 3: /* 6.5 */
549 cd = msp3400c_carrier_detect_65;
550 count = ARRAY_SIZE(msp3400c_carrier_detect_65);
551 break;
552 case 0: /* 4.5 */
553 case 2: /* 6.0 */
554 default:
555 cd = NULL;
556 count = 0;
557 break;
558 }
559
560 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
561 /* autodetect doesn't work well with AM ... */
562 cd = NULL;
563 count = 0;
564 max2 = 0;
565 }
566 for (i = 0; i < count; i++) {
567 msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
568 if (msp_sleep(state, 100))
569 goto restart;
570 val = msp_read_dsp(client, 0x1b);
571 if (val > 32767)
572 val -= 65536;
573 if (val2 < val)
574 val2 = val, max2 = i;
575 v4l_dbg(1, msp_debug, client,
576 "carrier2 val: %5d / %s\n", val, cd[i].name);
577 }
578
579 /* program the msp3400 according to the results */
580 state->main = msp3400c_carrier_detect_main[max1].cdo;
581 switch (max1) {
582 case 1: /* 5.5 */
583 if (max2 == 0) {
584 /* B/G FM-stereo */
585 state->second = msp3400c_carrier_detect_55[max2].cdo;
586 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
587 state->watch_stereo = 1;
588 } else if (max2 == 1 && state->has_nicam) {
589 /* B/G NICAM */
590 state->second = msp3400c_carrier_detect_55[max2].cdo;
591 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
592 state->nicam_on = 1;
593 state->watch_stereo = 1;
594 } else {
595 goto no_second;
596 }
597 break;
598 case 2: /* 6.0 */
599 /* PAL I NICAM */
600 state->second = MSP_CARRIER(6.552);
601 msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
602 state->nicam_on = 1;
603 state->watch_stereo = 1;
604 break;
605 case 3: /* 6.5 */
606 if (max2 == 1 || max2 == 2) {
607 /* D/K FM-stereo */
608 state->second = msp3400c_carrier_detect_65[max2].cdo;
609 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
610 state->watch_stereo = 1;
611 } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
612 /* L NICAM or AM-mono */
613 state->second = msp3400c_carrier_detect_65[max2].cdo;
614 msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
615 state->watch_stereo = 1;
616 } else if (max2 == 0 && state->has_nicam) {
617 /* D/K NICAM */
618 state->second = msp3400c_carrier_detect_65[max2].cdo;
619 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
620 state->nicam_on = 1;
621 state->watch_stereo = 1;
622 } else {
623 goto no_second;
624 }
625 break;
626 case 0: /* 4.5 */
627 default:
628 no_second:
629 state->second = msp3400c_carrier_detect_main[max1].cdo;
630 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
631 break;
632 }
633 msp3400c_set_carrier(client, state->second, state->main);
634
635 /* unmute */
636 state->scan_in_progress = 0;
637 msp3400c_set_audmode(client);
638 msp_set_audio(client);
639
640 if (msp_debug)
641 msp3400c_print_mode(client);
642
643 /* monitor tv audio mode, the first time don't wait
644 so long to get a quick stereo/bilingual result */
645 count = 3;
646 while (state->watch_stereo) {
647 if (msp_sleep(state, count ? 1000 : 5000))
648 goto restart;
649 if (count)
650 count--;
651 watch_stereo(client);
652 }
653 }
654 v4l_dbg(1, msp_debug, client, "thread: exit\n");
655 return 0;
656 }
657
658
659 int msp3410d_thread(void *data)
660 {
661 struct i2c_client *client = data;
662 struct msp_state *state = to_state(i2c_get_clientdata(client));
663 int val, i, std, count;
664
665 v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n");
666 set_freezable();
667 for (;;) {
668 v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n");
669 msp_sleep(state, -1);
670 v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n");
671
672 restart:
673 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
674 state->restart = 0;
675 if (kthread_should_stop())
676 break;
677
678 if (state->mode == MSP_MODE_EXTERN) {
679 /* no carrier scan needed, just unmute */
680 v4l_dbg(1, msp_debug, client,
681 "thread: no carrier scan\n");
682 state->scan_in_progress = 0;
683 msp_set_audio(client);
684 continue;
685 }
686
687 /* mute audio */
688 state->scan_in_progress = 1;
689 msp_set_audio(client);
690
691 /* start autodetect. Note: autodetect is not supported for
692 NTSC-M and radio, hence we force the standard in those
693 cases. */
694 if (state->radio)
695 std = 0x40;
696 else
697 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
698 state->watch_stereo = 0;
699 state->nicam_on = 0;
700
701 /* wait for tuner to settle down after a channel change */
702 if (msp_sleep(state, 200))
703 goto restart;
704
705 if (msp_debug)
706 v4l_dbg(2, msp_debug, client,
707 "setting standard: %s (0x%04x)\n",
708 msp_standard_std_name(std), std);
709
710 if (std != 1) {
711 /* programmed some specific mode */
712 val = std;
713 } else {
714 /* triggered autodetect */
715 msp_write_dem(client, 0x20, std);
716 for (;;) {
717 if (msp_sleep(state, 100))
718 goto restart;
719
720 /* check results */
721 val = msp_read_dem(client, 0x7e);
722 if (val < 0x07ff)
723 break;
724 v4l_dbg(2, msp_debug, client,
725 "detection still in progress\n");
726 }
727 }
728 for (i = 0; msp_stdlist[i].name != NULL; i++)
729 if (msp_stdlist[i].retval == val)
730 break;
731 v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n",
732 msp_standard_std_name(val), val);
733 state->main = msp_stdlist[i].main;
734 state->second = msp_stdlist[i].second;
735 state->std = val;
736 state->rxsubchans = V4L2_TUNER_SUB_MONO;
737
738 if (msp_amsound && !state->radio &&
739 (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
740 /* autodetection has failed, let backup */
741 v4l_dbg(1, msp_debug, client, "autodetection failed,"
742 " switching to backup standard: %s (0x%04x)\n",
743 msp_stdlist[8].name ?
744 msp_stdlist[8].name : "unknown", val);
745 state->std = val = 0x0009;
746 msp_write_dem(client, 0x20, val);
747 }
748
749 /* set stereo */
750 switch (val) {
751 case 0x0008: /* B/G NICAM */
752 case 0x000a: /* I NICAM */
753 case 0x000b: /* D/K NICAM */
754 if (val == 0x000a)
755 state->mode = MSP_MODE_FM_NICAM2;
756 else
757 state->mode = MSP_MODE_FM_NICAM1;
758 /* just turn on stereo */
759 state->nicam_on = 1;
760 state->watch_stereo = 1;
761 break;
762 case 0x0009:
763 state->mode = MSP_MODE_AM_NICAM;
764 state->nicam_on = 1;
765 state->watch_stereo = 1;
766 break;
767 case 0x0020: /* BTSC */
768 /* The pre-'G' models only have BTSC-mono */
769 state->mode = MSP_MODE_BTSC;
770 break;
771 case 0x0040: /* FM radio */
772 state->mode = MSP_MODE_FM_RADIO;
773 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
774 /* not needed in theory if we have radio, but
775 short programming enables carrier mute */
776 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
777 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
778 MSP_CARRIER(10.7));
779 break;
780 case 0x0002:
781 case 0x0003:
782 case 0x0004:
783 case 0x0005:
784 state->mode = MSP_MODE_FM_TERRA;
785 state->watch_stereo = 1;
786 break;
787 }
788
789 /* set various prescales */
790 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
791 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
792 if (state->has_nicam)
793 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
794
795 if (state->has_i2s_conf)
796 msp_write_dem(client, 0x40, state->i2s_mode);
797
798 /* unmute */
799 msp3400c_set_audmode(client);
800 state->scan_in_progress = 0;
801 msp_set_audio(client);
802
803 /* monitor tv audio mode, the first time don't wait
804 so long to get a quick stereo/bilingual result */
805 count = 3;
806 while (state->watch_stereo) {
807 if (msp_sleep(state, count ? 1000 : 5000))
808 goto restart;
809 if (count)
810 count--;
811 watch_stereo(client);
812 }
813 }
814 v4l_dbg(1, msp_debug, client, "thread: exit\n");
815 return 0;
816 }
817
818 /* ----------------------------------------------------------------------- */
819
820 /* msp34xxG + (autoselect no-thread)
821 * this one uses both automatic standard detection and automatic sound
822 * select which are available in the newer G versions
823 * struct msp: only norm, acb and source are really used in this mode
824 */
825
826 static int msp34xxg_modus(struct i2c_client *client)
827 {
828 struct msp_state *state = to_state(i2c_get_clientdata(client));
829
830 if (state->radio) {
831 v4l_dbg(1, msp_debug, client, "selected radio modus\n");
832 return 0x0001;
833 }
834 if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
835 v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n");
836 return 0x4001;
837 }
838 if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
839 v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n");
840 return 0x0001;
841 }
842 if (state->v4l2_std == V4L2_STD_SECAM_L) {
843 v4l_dbg(1, msp_debug, client, "selected SECAM-L modus\n");
844 return 0x6001;
845 }
846 if (state->v4l2_std & V4L2_STD_MN) {
847 v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n");
848 return 0x2001;
849 }
850 return 0x7001;
851 }
852
853 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
854 {
855 struct msp_state *state = to_state(i2c_get_clientdata(client));
856 int source, matrix;
857
858 switch (state->audmode) {
859 case V4L2_TUNER_MODE_MONO:
860 source = 0; /* mono only */
861 matrix = 0x30;
862 break;
863 case V4L2_TUNER_MODE_LANG2:
864 source = 4; /* stereo or B */
865 matrix = 0x10;
866 break;
867 case V4L2_TUNER_MODE_LANG1_LANG2:
868 source = 1; /* stereo or A|B */
869 matrix = 0x20;
870 break;
871 case V4L2_TUNER_MODE_LANG1:
872 source = 3; /* stereo or A */
873 matrix = 0x00;
874 break;
875 case V4L2_TUNER_MODE_STEREO:
876 default:
877 source = 3; /* stereo or A */
878 matrix = 0x20;
879 break;
880 }
881
882 if (in == MSP_DSP_IN_TUNER)
883 source = (source << 8) | 0x20;
884 /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
885 instead of 11, 12, 13. So we add one for that msp version. */
886 else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
887 source = ((in + 1) << 8) | matrix;
888 else
889 source = (in << 8) | matrix;
890
891 v4l_dbg(1, msp_debug, client,
892 "set source to %d (0x%x) for output %02x\n", in, source, reg);
893 msp_write_dsp(client, reg, source);
894 }
895
896 static void msp34xxg_set_sources(struct i2c_client *client)
897 {
898 struct msp_state *state = to_state(i2c_get_clientdata(client));
899 u32 in = state->routing.input;
900
901 msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
902 /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
903 msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
904 msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
905 msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
906 if (state->has_scart2_out)
907 msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
908 msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
909 }
910
911 /* (re-)initialize the msp34xxg */
912 static void msp34xxg_reset(struct i2c_client *client)
913 {
914 struct msp_state *state = to_state(i2c_get_clientdata(client));
915 int tuner = (state->routing.input >> 3) & 1;
916 int modus;
917
918 /* initialize std to 1 (autodetect) to signal that no standard is
919 selected yet. */
920 state->std = 1;
921
922 msp_reset(client);
923
924 if (state->has_i2s_conf)
925 msp_write_dem(client, 0x40, state->i2s_mode);
926
927 /* step-by-step initialisation, as described in the manual */
928 modus = msp34xxg_modus(client);
929 modus |= tuner ? 0x100 : 0;
930 msp_write_dem(client, 0x30, modus);
931
932 /* write the dsps that may have an influence on
933 standard/audio autodetection right now */
934 msp34xxg_set_sources(client);
935
936 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
937 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
938 if (state->has_nicam)
939 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
940
941 /* set identification threshold. Personally, I
942 * I set it to a higher value than the default
943 * of 0x190 to ignore noisy stereo signals.
944 * this needs tuning. (recommended range 0x00a0-0x03c0)
945 * 0x7f0 = forced mono mode
946 *
947 * a2 threshold for stereo/bilingual.
948 * Note: this register is part of the Manual/Compatibility mode.
949 * It is supported by all 'G'-family chips.
950 */
951 msp_write_dem(client, 0x22, msp_stereo_thresh);
952 }
953
954 int msp34xxg_thread(void *data)
955 {
956 struct i2c_client *client = data;
957 struct msp_state *state = to_state(i2c_get_clientdata(client));
958 int val, i;
959
960 v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n");
961 set_freezable();
962 for (;;) {
963 v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n");
964 msp_sleep(state, -1);
965 v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n");
966
967 restart:
968 v4l_dbg(1, msp_debug, client, "thread: restart scan\n");
969 state->restart = 0;
970 if (kthread_should_stop())
971 break;
972
973 if (state->mode == MSP_MODE_EXTERN) {
974 /* no carrier scan needed, just unmute */
975 v4l_dbg(1, msp_debug, client,
976 "thread: no carrier scan\n");
977 state->scan_in_progress = 0;
978 msp_set_audio(client);
979 continue;
980 }
981
982 /* setup the chip*/
983 msp34xxg_reset(client);
984 state->std = state->radio ? 0x40 :
985 (state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
986 msp_write_dem(client, 0x20, state->std);
987 /* start autodetect */
988 if (state->std != 1)
989 goto unmute;
990
991 /* watch autodetect */
992 v4l_dbg(1, msp_debug, client,
993 "started autodetect, waiting for result\n");
994 for (i = 0; i < 10; i++) {
995 if (msp_sleep(state, 100))
996 goto restart;
997
998 /* check results */
999 val = msp_read_dem(client, 0x7e);
1000 if (val < 0x07ff) {
1001 state->std = val;
1002 break;
1003 }
1004 v4l_dbg(2, msp_debug, client,
1005 "detection still in progress\n");
1006 }
1007 if (state->std == 1) {
1008 v4l_dbg(1, msp_debug, client,
1009 "detection still in progress after 10 tries. giving up.\n");
1010 continue;
1011 }
1012
1013 unmute:
1014 v4l_dbg(1, msp_debug, client,
1015 "detected standard: %s (0x%04x)\n",
1016 msp_standard_std_name(state->std), state->std);
1017
1018 if (state->std == 9) {
1019 /* AM NICAM mode */
1020 msp_write_dsp(client, 0x0e, 0x7c00);
1021 }
1022
1023 /* unmute: dispatch sound to scart output, set scart volume */
1024 msp_set_audio(client);
1025
1026 /* restore ACB */
1027 if (msp_write_dsp(client, 0x13, state->acb))
1028 return -1;
1029
1030 /* the periodic stereo/SAP check is only relevant for
1031 the 0x20 standard (BTSC) */
1032 if (state->std != 0x20)
1033 continue;
1034
1035 state->watch_stereo = 1;
1036
1037 /* monitor tv audio mode, the first time don't wait
1038 in order to get a quick stereo/SAP update */
1039 watch_stereo(client);
1040 while (state->watch_stereo) {
1041 watch_stereo(client);
1042 if (msp_sleep(state, 5000))
1043 goto restart;
1044 }
1045 }
1046 v4l_dbg(1, msp_debug, client, "thread: exit\n");
1047 return 0;
1048 }
1049
1050 static int msp34xxg_detect_stereo(struct i2c_client *client)
1051 {
1052 struct msp_state *state = to_state(i2c_get_clientdata(client));
1053 int status = msp_read_dem(client, 0x0200);
1054 int is_bilingual = status & 0x100;
1055 int is_stereo = status & 0x40;
1056 int oldrx = state->rxsubchans;
1057
1058 if (state->mode == MSP_MODE_EXTERN)
1059 return 0;
1060
1061 state->rxsubchans = 0;
1062 if (is_stereo)
1063 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1064 else
1065 state->rxsubchans = V4L2_TUNER_SUB_MONO;
1066 if (is_bilingual) {
1067 if (state->std == 0x20)
1068 state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1069 else
1070 state->rxsubchans =
1071 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1072 }
1073 v4l_dbg(1, msp_debug, client,
1074 "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1075 status, is_stereo, is_bilingual, state->rxsubchans);
1076 return (oldrx != state->rxsubchans);
1077 }
1078
1079 static void msp34xxg_set_audmode(struct i2c_client *client)
1080 {
1081 struct msp_state *state = to_state(i2c_get_clientdata(client));
1082
1083 if (state->std == 0x20) {
1084 if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1085 (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1086 state->audmode == V4L2_TUNER_MODE_LANG2)) {
1087 msp_write_dem(client, 0x20, 0x21);
1088 } else {
1089 msp_write_dem(client, 0x20, 0x20);
1090 }
1091 }
1092
1093 msp34xxg_set_sources(client);
1094 }
1095
1096 void msp_set_audmode(struct i2c_client *client)
1097 {
1098 struct msp_state *state = to_state(i2c_get_clientdata(client));
1099
1100 switch (state->opmode) {
1101 case OPMODE_MANUAL:
1102 case OPMODE_AUTODETECT:
1103 msp3400c_set_audmode(client);
1104 break;
1105 case OPMODE_AUTOSELECT:
1106 msp34xxg_set_audmode(client);
1107 break;
1108 }
1109 }
1110
1111 int msp_detect_stereo(struct i2c_client *client)
1112 {
1113 struct msp_state *state = to_state(i2c_get_clientdata(client));
1114
1115 switch (state->opmode) {
1116 case OPMODE_MANUAL:
1117 case OPMODE_AUTODETECT:
1118 return msp3400c_detect_stereo(client);
1119 case OPMODE_AUTOSELECT:
1120 return msp34xxg_detect_stereo(client);
1121 }
1122 return 0;
1123 }
1124
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