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get_signal_to_deliver: use the cached ->signal/sighand values
[linux-2.6/mini2440.git] / drivers / media / video / msp3400-kthreads.c
blob7f5568592793c836f8a71d78181f83c6dcf2c648
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/videodev.h>
29 #include <linux/videodev2.h>
30 #include <media/v4l2-common.h>
31 #include <media/msp3400.h>
32 #include <linux/kthread.h>
33 #include <linux/suspend.h>
34 #include "msp3400-driver.h"
35
36 /* this one uses the automatic sound standard detection of newer msp34xx
37 chip versions */
38 static struct {
39 int retval;
40 int main, second;
41 char *name;
42 } msp_stdlist[] = {
43 { 0x0000, 0, 0, "could not detect sound standard" },
44 { 0x0001, 0, 0, "autodetect start" },
45 { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72), "4.5/4.72 M Dual FM-Stereo" },
46 { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875), "5.5/5.74 B/G Dual FM-Stereo" },
47 { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125), "6.5/6.25 D/K1 Dual FM-Stereo" },
48 { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875), "6.5/6.74 D/K2 Dual FM-Stereo" },
49 { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 D/K FM-Mono (HDEV3)" },
50 { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875), "6.5/5.74 D/K3 Dual FM-Stereo" },
51 { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85), "5.5/5.85 B/G NICAM FM" },
52 { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 L NICAM AM" },
53 { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55), "6.0/6.55 I NICAM FM" },
54 { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM" },
55 { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV2)" },
56 { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV3)" },
57 { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Stereo" },
58 { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Mono + SAP" },
59 { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M EIA-J Japan Stereo" },
60 { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7), "10.7 FM-Stereo Radio" },
61 { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 SAT-Mono" },
62 { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20), "7.02/7.20 SAT-Stereo" },
63 { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2), "7.2 SAT ADR" },
64 { -1, 0, 0, NULL }, /* EOF */
65 };
66
67 static struct msp3400c_init_data_dem {
68 int fir1[6];
69 int fir2[6];
70 int cdo1;
71 int cdo2;
72 int ad_cv;
73 int mode_reg;
74 int dsp_src;
75 int dsp_matrix;
76 } msp3400c_init_data[] = {
77 { /* AM (for carrier detect / msp3400) */
78 {75, 19, 36, 35, 39, 40},
79 {75, 19, 36, 35, 39, 40},
80 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
81 0x00d0, 0x0500, 0x0020, 0x3000
82 }, { /* AM (for carrier detect / msp3410) */
83 {-1, -1, -8, 2, 59, 126},
84 {-1, -1, -8, 2, 59, 126},
85 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
86 0x00d0, 0x0100, 0x0020, 0x3000
87 }, { /* FM Radio */
88 {-8, -8, 4, 6, 78, 107},
89 {-8, -8, 4, 6, 78, 107},
90 MSP_CARRIER(10.7), MSP_CARRIER(10.7),
91 0x00d0, 0x0480, 0x0020, 0x3000
92 }, { /* Terrestial FM-mono + FM-stereo */
93 {3, 18, 27, 48, 66, 72},
94 {3, 18, 27, 48, 66, 72},
95 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
96 0x00d0, 0x0480, 0x0030, 0x3000
97 }, { /* Sat FM-mono */
98 { 1, 9, 14, 24, 33, 37},
99 { 3, 18, 27, 48, 66, 72},
100 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
101 0x00c6, 0x0480, 0x0000, 0x3000
102 }, { /* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */
103 {-2, -8, -10, 10, 50, 86},
104 {3, 18, 27, 48, 66, 72},
105 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
106 0x00d0, 0x0040, 0x0120, 0x3000
107 }, { /* NICAM/FM -- I (6.0/6.552) */
108 {2, 4, -6, -4, 40, 94},
109 {3, 18, 27, 48, 66, 72},
110 MSP_CARRIER(6.0), MSP_CARRIER(6.0),
111 0x00d0, 0x0040, 0x0120, 0x3000
112 }, { /* NICAM/AM -- L (6.5/5.85) */
113 {-2, -8, -10, 10, 50, 86},
114 {-4, -12, -9, 23, 79, 126},
115 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
116 0x00c6, 0x0140, 0x0120, 0x7c00
117 },
118 };
119
120 struct msp3400c_carrier_detect {
121 int cdo;
122 char *name;
123 };
124
125 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
126 /* main carrier */
127 { MSP_CARRIER(4.5), "4.5 NTSC" },
128 { MSP_CARRIER(5.5), "5.5 PAL B/G" },
129 { MSP_CARRIER(6.0), "6.0 PAL I" },
130 { MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" }
131 };
132
133 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
134 /* PAL B/G */
135 { MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
136 { MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
137 };
138
139 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
140 /* PAL SAT / SECAM */
141 { MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" },
142 { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
143 { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
144 { MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
145 { MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
146 { MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
147 };
148
149 /* ------------------------------------------------------------------------ */
150
151 const char *msp_standard_std_name(int std)
152 {
153 int i;
154
155 for (i = 0; msp_stdlist[i].name != NULL; i++)
156 if (msp_stdlist[i].retval == std)
157 return msp_stdlist[i].name;
158 return "unknown";
159 }
160
161 static void msp_set_source(struct i2c_client *client, u16 src)
162 {
163 struct msp_state *state = i2c_get_clientdata(client);
164
165 if (msp_dolby) {
166 msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
167 msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
168 } else {
169 msp_write_dsp(client, 0x0008, src);
170 msp_write_dsp(client, 0x0009, src);
171 }
172 msp_write_dsp(client, 0x000a, src);
173 msp_write_dsp(client, 0x000b, src);
174 msp_write_dsp(client, 0x000c, src);
175 if (state->has_scart2_out)
176 msp_write_dsp(client, 0x0041, src);
177 }
178
179 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
180 {
181 msp_write_dem(client, 0x0093, cdo1 & 0xfff);
182 msp_write_dem(client, 0x009b, cdo1 >> 12);
183 msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
184 msp_write_dem(client, 0x00ab, cdo2 >> 12);
185 msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
186 }
187
188 void msp3400c_set_mode(struct i2c_client *client, int mode)
189 {
190 struct msp_state *state = i2c_get_clientdata(client);
191 struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
192 int tuner = (state->routing.input >> 3) & 1;
193 int i;
194
195 v4l_dbg(1, msp_debug, client, "set_mode: %d\n", mode);
196 state->mode = mode;
197 state->rxsubchans = V4L2_TUNER_SUB_MONO;
198
199 msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
200
201 for (i = 5; i >= 0; i--) /* fir 1 */
202 msp_write_dem(client, 0x0001, data->fir1[i]);
203
204 msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
205 msp_write_dem(client, 0x0005, 0x0040);
206 msp_write_dem(client, 0x0005, 0x0000);
207 for (i = 5; i >= 0; i--)
208 msp_write_dem(client, 0x0005, data->fir2[i]);
209
210 msp_write_dem(client, 0x0083, data->mode_reg);
211
212 msp3400c_set_carrier(client, data->cdo1, data->cdo2);
213
214 msp_set_source(client, data->dsp_src);
215 /* set prescales */
216
217 /* volume prescale for SCART (AM mono input) */
218 msp_write_dsp(client, 0x000d, 0x1900);
219 msp_write_dsp(client, 0x000e, data->dsp_matrix);
220 if (state->has_nicam) /* nicam prescale */
221 msp_write_dsp(client, 0x0010, 0x5a00);
222 }
223
224 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
225 nor do they support stereo BTSC. */
226 static void msp3400c_set_audmode(struct i2c_client *client)
227 {
228 static char *strmode[] = {
229 "mono", "stereo", "lang2", "lang1", "lang1+lang2"
230 };
231 struct msp_state *state = i2c_get_clientdata(client);
232 char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
233 strmode[state->audmode] : "unknown";
234 int src = 0; /* channel source: FM/AM, nicam or SCART */
235 int audmode = state->audmode;
236
237 if (state->opmode == OPMODE_AUTOSELECT) {
238 /* this method would break everything, let's make sure
239 * it's never called
240 */
241 v4l_dbg(1, msp_debug, client,
242 "set_audmode called with mode=%d instead of set_source (ignored)\n",
243 state->audmode);
244 return;
245 }
246
247 /* Note: for the C and D revs no NTSC stereo + SAP is possible as
248 the hardware does not support SAP. So the rxsubchans combination
249 of STEREO | LANG2 does not occur. */
250
251 if (state->mode != MSP_MODE_EXTERN) {
252 /* switch to mono if only mono is available */
253 if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
254 audmode = V4L2_TUNER_MODE_MONO;
255 /* if bilingual */
256 else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
257 /* and mono or stereo, then fallback to lang1 */
258 if (audmode == V4L2_TUNER_MODE_MONO ||
259 audmode == V4L2_TUNER_MODE_STEREO)
260 audmode = V4L2_TUNER_MODE_LANG1;
261 }
262 /* if stereo, and audmode is not mono, then switch to stereo */
263 else if (audmode != V4L2_TUNER_MODE_MONO)
264 audmode = V4L2_TUNER_MODE_STEREO;
265 }
266
267 /* switch demodulator */
268 switch (state->mode) {
269 case MSP_MODE_FM_TERRA:
270 v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr);
271 switch (audmode) {
272 case V4L2_TUNER_MODE_STEREO:
273 msp_write_dsp(client, 0x000e, 0x3001);
274 break;
275 case V4L2_TUNER_MODE_MONO:
276 case V4L2_TUNER_MODE_LANG1:
277 case V4L2_TUNER_MODE_LANG2:
278 case V4L2_TUNER_MODE_LANG1_LANG2:
279 msp_write_dsp(client, 0x000e, 0x3000);
280 break;
281 }
282 break;
283 case MSP_MODE_FM_SAT:
284 v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr);
285 switch (audmode) {
286 case V4L2_TUNER_MODE_MONO:
287 msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
288 break;
289 case V4L2_TUNER_MODE_STEREO:
290 case V4L2_TUNER_MODE_LANG1_LANG2:
291 msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
292 break;
293 case V4L2_TUNER_MODE_LANG1:
294 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
295 break;
296 case V4L2_TUNER_MODE_LANG2:
297 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
298 break;
299 }
300 break;
301 case MSP_MODE_FM_NICAM1:
302 case MSP_MODE_FM_NICAM2:
303 case MSP_MODE_AM_NICAM:
304 v4l_dbg(1, msp_debug, client,
305 "NICAM set_audmode: %s\n", modestr);
306 if (state->nicam_on)
307 src = 0x0100; /* NICAM */
308 break;
309 case MSP_MODE_BTSC:
310 v4l_dbg(1, msp_debug, client,
311 "BTSC set_audmode: %s\n", modestr);
312 break;
313 case MSP_MODE_EXTERN:
314 v4l_dbg(1, msp_debug, client,
315 "extern set_audmode: %s\n", modestr);
316 src = 0x0200; /* SCART */
317 break;
318 case MSP_MODE_FM_RADIO:
319 v4l_dbg(1, msp_debug, client,
320 "FM-Radio set_audmode: %s\n", modestr);
321 break;
322 default:
323 v4l_dbg(1, msp_debug, client, "mono set_audmode\n");
324 return;
325 }
326
327 /* switch audio */
328 v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode);
329 switch (audmode) {
330 case V4L2_TUNER_MODE_STEREO:
331 case V4L2_TUNER_MODE_LANG1_LANG2:
332 src |= 0x0020;
333 break;
334 case V4L2_TUNER_MODE_MONO:
335 if (state->mode == MSP_MODE_AM_NICAM) {
336 v4l_dbg(1, msp_debug, client, "switching to AM mono\n");
337 /* AM mono decoding is handled by tuner, not MSP chip */
338 /* SCART switching control register */
339 msp_set_scart(client, SCART_MONO, 0);
340 src = 0x0200;
341 break;
342 }
343 if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
344 src = 0x0030;
345 break;
346 case V4L2_TUNER_MODE_LANG1:
347 break;
348 case V4L2_TUNER_MODE_LANG2:
349 src |= 0x0010;
350 break;
351 }
352 v4l_dbg(1, msp_debug, client,
353 "set_audmode final source/matrix = 0x%x\n", src);
354
355 msp_set_source(client, src);
356 }
357
358 static void msp3400c_print_mode(struct i2c_client *client)
359 {
360 struct msp_state *state = i2c_get_clientdata(client);
361
362 if (state->main == state->second)
363 v4l_dbg(1, msp_debug, client,
364 "mono sound carrier: %d.%03d MHz\n",
365 state->main / 910000, (state->main / 910) % 1000);
366 else
367 v4l_dbg(1, msp_debug, client,
368 "main sound carrier: %d.%03d MHz\n",
369 state->main / 910000, (state->main / 910) % 1000);
370 if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
371 v4l_dbg(1, msp_debug, client,
372 "NICAM/FM carrier : %d.%03d MHz\n",
373 state->second / 910000, (state->second/910) % 1000);
374 if (state->mode == MSP_MODE_AM_NICAM)
375 v4l_dbg(1, msp_debug, client,
376 "NICAM/AM carrier : %d.%03d MHz\n",
377 state->second / 910000, (state->second / 910) % 1000);
378 if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
379 v4l_dbg(1, msp_debug, client,
380 "FM-stereo carrier : %d.%03d MHz\n",
381 state->second / 910000, (state->second / 910) % 1000);
382 }
383 }
384
385 /* ----------------------------------------------------------------------- */
386
387 static int msp3400c_detect_stereo(struct i2c_client *client)
388 {
389 struct msp_state *state = i2c_get_clientdata(client);
390 int val;
391 int rxsubchans = state->rxsubchans;
392 int newnicam = state->nicam_on;
393 int update = 0;
394
395 switch (state->mode) {
396 case MSP_MODE_FM_TERRA:
397 val = msp_read_dsp(client, 0x18);
398 if (val > 32767)
399 val -= 65536;
400 v4l_dbg(2, msp_debug, client,
401 "stereo detect register: %d\n", val);
402 if (val > 8192) {
403 rxsubchans = V4L2_TUNER_SUB_STEREO;
404 } else if (val < -4096) {
405 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
406 } else {
407 rxsubchans = V4L2_TUNER_SUB_MONO;
408 }
409 newnicam = 0;
410 break;
411 case MSP_MODE_FM_NICAM1:
412 case MSP_MODE_FM_NICAM2:
413 case MSP_MODE_AM_NICAM:
414 val = msp_read_dem(client, 0x23);
415 v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
416 val & 1, (val & 0x1e) >> 1);
417
418 if (val & 1) {
419 /* nicam synced */
420 switch ((val & 0x1e) >> 1) {
421 case 0:
422 case 8:
423 rxsubchans = V4L2_TUNER_SUB_STEREO;
424 break;
425 case 1:
426 case 9:
427 rxsubchans = V4L2_TUNER_SUB_MONO;
428 break;
429 case 2:
430 case 10:
431 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
432 break;
433 default:
434 rxsubchans = V4L2_TUNER_SUB_MONO;
435 break;
436 }
437 newnicam = 1;
438 } else {
439 newnicam = 0;
440 rxsubchans = V4L2_TUNER_SUB_MONO;
441 }
442 break;
443 }
444 if (rxsubchans != state->rxsubchans) {
445 update = 1;
446 v4l_dbg(1, msp_debug, client,
447 "watch: rxsubchans %02x => %02x\n",
448 state->rxsubchans, rxsubchans);
449 state->rxsubchans = rxsubchans;
450 }
451 if (newnicam != state->nicam_on) {
452 update = 1;
453 v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n",
454 state->nicam_on, newnicam);
455 state->nicam_on = newnicam;
456 }
457 return update;
458 }
459
460 /*
461 * A kernel thread for msp3400 control -- we don't want to block the
462 * in the ioctl while doing the sound carrier & stereo detect
463 */
464 /* stereo/multilang monitoring */
465 static void watch_stereo(struct i2c_client *client)
466 {
467 struct msp_state *state = i2c_get_clientdata(client);
468
469 if (msp_detect_stereo(client))
470 msp_set_audmode(client);
471
472 if (msp_once)
473 state->watch_stereo = 0;
474 }
475
476 int msp3400c_thread(void *data)
477 {
478 struct i2c_client *client = data;
479 struct msp_state *state = i2c_get_clientdata(client);
480 struct msp3400c_carrier_detect *cd;
481 int count, max1, max2, val1, val2, val, i;
482
483
484 v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n");
485 set_freezable();
486 for (;;) {
487 v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n");
488 msp_sleep(state, -1);
489 v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n");
490
491 restart:
492 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
493 state->restart = 0;
494 if (kthread_should_stop())
495 break;
496
497 if (state->radio || MSP_MODE_EXTERN == state->mode) {
498 /* no carrier scan, just unmute */
499 v4l_dbg(1, msp_debug, client,
500 "thread: no carrier scan\n");
501 state->scan_in_progress = 0;
502 msp_set_audio(client);
503 continue;
504 }
505
506 /* mute audio */
507 state->scan_in_progress = 1;
508 msp_set_audio(client);
509
510 msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
511 val1 = val2 = 0;
512 max1 = max2 = -1;
513 state->watch_stereo = 0;
514 state->nicam_on = 0;
515
516 /* wait for tuner to settle down after a channel change */
517 if (msp_sleep(state, 200))
518 goto restart;
519
520 /* carrier detect pass #1 -- main carrier */
521 cd = msp3400c_carrier_detect_main;
522 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
523
524 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
525 /* autodetect doesn't work well with AM ... */
526 max1 = 3;
527 count = 0;
528 v4l_dbg(1, msp_debug, client, "AM sound override\n");
529 }
530
531 for (i = 0; i < count; i++) {
532 msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
533 if (msp_sleep(state, 100))
534 goto restart;
535 val = msp_read_dsp(client, 0x1b);
536 if (val > 32767)
537 val -= 65536;
538 if (val1 < val)
539 val1 = val, max1 = i;
540 v4l_dbg(1, msp_debug, client,
541 "carrier1 val: %5d / %s\n", val, cd[i].name);
542 }
543
544 /* carrier detect pass #2 -- second (stereo) carrier */
545 switch (max1) {
546 case 1: /* 5.5 */
547 cd = msp3400c_carrier_detect_55;
548 count = ARRAY_SIZE(msp3400c_carrier_detect_55);
549 break;
550 case 3: /* 6.5 */
551 cd = msp3400c_carrier_detect_65;
552 count = ARRAY_SIZE(msp3400c_carrier_detect_65);
553 break;
554 case 0: /* 4.5 */
555 case 2: /* 6.0 */
556 default:
557 cd = NULL;
558 count = 0;
559 break;
560 }
561
562 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
563 /* autodetect doesn't work well with AM ... */
564 cd = NULL;
565 count = 0;
566 max2 = 0;
567 }
568 for (i = 0; i < count; i++) {
569 msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
570 if (msp_sleep(state, 100))
571 goto restart;
572 val = msp_read_dsp(client, 0x1b);
573 if (val > 32767)
574 val -= 65536;
575 if (val2 < val)
576 val2 = val, max2 = i;
577 v4l_dbg(1, msp_debug, client,
578 "carrier2 val: %5d / %s\n", val, cd[i].name);
579 }
580
581 /* program the msp3400 according to the results */
582 state->main = msp3400c_carrier_detect_main[max1].cdo;
583 switch (max1) {
584 case 1: /* 5.5 */
585 if (max2 == 0) {
586 /* B/G FM-stereo */
587 state->second = msp3400c_carrier_detect_55[max2].cdo;
588 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
589 state->watch_stereo = 1;
590 } else if (max2 == 1 && state->has_nicam) {
591 /* B/G NICAM */
592 state->second = msp3400c_carrier_detect_55[max2].cdo;
593 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
594 state->nicam_on = 1;
595 state->watch_stereo = 1;
596 } else {
597 goto no_second;
598 }
599 break;
600 case 2: /* 6.0 */
601 /* PAL I NICAM */
602 state->second = MSP_CARRIER(6.552);
603 msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
604 state->nicam_on = 1;
605 state->watch_stereo = 1;
606 break;
607 case 3: /* 6.5 */
608 if (max2 == 1 || max2 == 2) {
609 /* D/K FM-stereo */
610 state->second = msp3400c_carrier_detect_65[max2].cdo;
611 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
612 state->watch_stereo = 1;
613 } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
614 /* L NICAM or AM-mono */
615 state->second = msp3400c_carrier_detect_65[max2].cdo;
616 msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
617 state->watch_stereo = 1;
618 } else if (max2 == 0 && state->has_nicam) {
619 /* D/K NICAM */
620 state->second = msp3400c_carrier_detect_65[max2].cdo;
621 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
622 state->nicam_on = 1;
623 state->watch_stereo = 1;
624 } else {
625 goto no_second;
626 }
627 break;
628 case 0: /* 4.5 */
629 default:
630 no_second:
631 state->second = msp3400c_carrier_detect_main[max1].cdo;
632 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
633 break;
634 }
635 msp3400c_set_carrier(client, state->second, state->main);
636
637 /* unmute */
638 state->scan_in_progress = 0;
639 msp3400c_set_audmode(client);
640 msp_set_audio(client);
641
642 if (msp_debug)
643 msp3400c_print_mode(client);
644
645 /* monitor tv audio mode, the first time don't wait
646 so long to get a quick stereo/bilingual result */
647 count = 3;
648 while (state->watch_stereo) {
649 if (msp_sleep(state, count ? 1000 : 5000))
650 goto restart;
651 if (count)
652 count--;
653 watch_stereo(client);
654 }
655 }
656 v4l_dbg(1, msp_debug, client, "thread: exit\n");
657 return 0;
658 }
659
660
661 int msp3410d_thread(void *data)
662 {
663 struct i2c_client *client = data;
664 struct msp_state *state = i2c_get_clientdata(client);
665 int val, i, std, count;
666
667 v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n");
668 set_freezable();
669 for (;;) {
670 v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n");
671 msp_sleep(state, -1);
672 v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n");
673
674 restart:
675 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
676 state->restart = 0;
677 if (kthread_should_stop())
678 break;
679
680 if (state->mode == MSP_MODE_EXTERN) {
681 /* no carrier scan needed, just unmute */
682 v4l_dbg(1, msp_debug, client,
683 "thread: no carrier scan\n");
684 state->scan_in_progress = 0;
685 msp_set_audio(client);
686 continue;
687 }
688
689 /* mute audio */
690 state->scan_in_progress = 1;
691 msp_set_audio(client);
692
693 /* start autodetect. Note: autodetect is not supported for
694 NTSC-M and radio, hence we force the standard in those
695 cases. */
696 if (state->radio)
697 std = 0x40;
698 else
699 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
700 state->watch_stereo = 0;
701 state->nicam_on = 0;
702
703 /* wait for tuner to settle down after a channel change */
704 if (msp_sleep(state, 200))
705 goto restart;
706
707 if (msp_debug)
708 v4l_dbg(2, msp_debug, client,
709 "setting standard: %s (0x%04x)\n",
710 msp_standard_std_name(std), std);
711
712 if (std != 1) {
713 /* programmed some specific mode */
714 val = std;
715 } else {
716 /* triggered autodetect */
717 msp_write_dem(client, 0x20, std);
718 for (;;) {
719 if (msp_sleep(state, 100))
720 goto restart;
721
722 /* check results */
723 val = msp_read_dem(client, 0x7e);
724 if (val < 0x07ff)
725 break;
726 v4l_dbg(2, msp_debug, client,
727 "detection still in progress\n");
728 }
729 }
730 for (i = 0; msp_stdlist[i].name != NULL; i++)
731 if (msp_stdlist[i].retval == val)
732 break;
733 v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n",
734 msp_standard_std_name(val), val);
735 state->main = msp_stdlist[i].main;
736 state->second = msp_stdlist[i].second;
737 state->std = val;
738 state->rxsubchans = V4L2_TUNER_SUB_MONO;
739
740 if (msp_amsound && !state->radio &&
741 (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
742 /* autodetection has failed, let backup */
743 v4l_dbg(1, msp_debug, client, "autodetection failed,"
744 " switching to backup standard: %s (0x%04x)\n",
745 msp_stdlist[8].name ?
746 msp_stdlist[8].name : "unknown", val);
747 state->std = val = 0x0009;
748 msp_write_dem(client, 0x20, val);
749 }
750
751 /* set stereo */
752 switch (val) {
753 case 0x0008: /* B/G NICAM */
754 case 0x000a: /* I NICAM */
755 case 0x000b: /* D/K NICAM */
756 if (val == 0x000a)
757 state->mode = MSP_MODE_FM_NICAM2;
758 else
759 state->mode = MSP_MODE_FM_NICAM1;
760 /* just turn on stereo */
761 state->nicam_on = 1;
762 state->watch_stereo = 1;
763 break;
764 case 0x0009:
765 state->mode = MSP_MODE_AM_NICAM;
766 state->nicam_on = 1;
767 state->watch_stereo = 1;
768 break;
769 case 0x0020: /* BTSC */
770 /* The pre-'G' models only have BTSC-mono */
771 state->mode = MSP_MODE_BTSC;
772 break;
773 case 0x0040: /* FM radio */
774 state->mode = MSP_MODE_FM_RADIO;
775 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
776 /* not needed in theory if we have radio, but
777 short programming enables carrier mute */
778 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
779 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
780 MSP_CARRIER(10.7));
781 break;
782 case 0x0002:
783 case 0x0003:
784 case 0x0004:
785 case 0x0005:
786 state->mode = MSP_MODE_FM_TERRA;
787 state->watch_stereo = 1;
788 break;
789 }
790
791 /* set various prescales */
792 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
793 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
794 if (state->has_nicam)
795 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
796
797 if (state->has_i2s_conf)
798 msp_write_dem(client, 0x40, state->i2s_mode);
799
800 /* unmute */
801 msp3400c_set_audmode(client);
802 state->scan_in_progress = 0;
803 msp_set_audio(client);
804
805 /* monitor tv audio mode, the first time don't wait
806 so long to get a quick stereo/bilingual result */
807 count = 3;
808 while (state->watch_stereo) {
809 if (msp_sleep(state, count ? 1000 : 5000))
810 goto restart;
811 if (count)
812 count--;
813 watch_stereo(client);
814 }
815 }
816 v4l_dbg(1, msp_debug, client, "thread: exit\n");
817 return 0;
818 }
819
820 /* ----------------------------------------------------------------------- */
821
822 /* msp34xxG + (autoselect no-thread)
823 * this one uses both automatic standard detection and automatic sound
824 * select which are available in the newer G versions
825 * struct msp: only norm, acb and source are really used in this mode
826 */
827
828 static int msp34xxg_modus(struct i2c_client *client)
829 {
830 struct msp_state *state = i2c_get_clientdata(client);
831
832 if (state->radio) {
833 v4l_dbg(1, msp_debug, client, "selected radio modus\n");
834 return 0x0001;
835 }
836 if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
837 v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n");
838 return 0x4001;
839 }
840 if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
841 v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n");
842 return 0x0001;
843 }
844 if (state->v4l2_std == V4L2_STD_SECAM_L) {
845 v4l_dbg(1, msp_debug, client, "selected SECAM-L modus\n");
846 return 0x6001;
847 }
848 if (state->v4l2_std & V4L2_STD_MN) {
849 v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n");
850 return 0x2001;
851 }
852 return 0x7001;
853 }
854
855 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
856 {
857 struct msp_state *state = i2c_get_clientdata(client);
858 int source, matrix;
859
860 switch (state->audmode) {
861 case V4L2_TUNER_MODE_MONO:
862 source = 0; /* mono only */
863 matrix = 0x30;
864 break;
865 case V4L2_TUNER_MODE_LANG2:
866 source = 4; /* stereo or B */
867 matrix = 0x10;
868 break;
869 case V4L2_TUNER_MODE_LANG1_LANG2:
870 source = 1; /* stereo or A|B */
871 matrix = 0x20;
872 break;
873 case V4L2_TUNER_MODE_LANG1:
874 source = 3; /* stereo or A */
875 matrix = 0x00;
876 break;
877 case V4L2_TUNER_MODE_STEREO:
878 default:
879 source = 3; /* stereo or A */
880 matrix = 0x20;
881 break;
882 }
883
884 if (in == MSP_DSP_IN_TUNER)
885 source = (source << 8) | 0x20;
886 /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
887 instead of 11, 12, 13. So we add one for that msp version. */
888 else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
889 source = ((in + 1) << 8) | matrix;
890 else
891 source = (in << 8) | matrix;
892
893 v4l_dbg(1, msp_debug, client,
894 "set source to %d (0x%x) for output %02x\n", in, source, reg);
895 msp_write_dsp(client, reg, source);
896 }
897
898 static void msp34xxg_set_sources(struct i2c_client *client)
899 {
900 struct msp_state *state = i2c_get_clientdata(client);
901 u32 in = state->routing.input;
902
903 msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
904 /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
905 msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
906 msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
907 msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
908 if (state->has_scart2_out)
909 msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
910 msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
911 }
912
913 /* (re-)initialize the msp34xxg */
914 static void msp34xxg_reset(struct i2c_client *client)
915 {
916 struct msp_state *state = i2c_get_clientdata(client);
917 int tuner = (state->routing.input >> 3) & 1;
918 int modus;
919
920 /* initialize std to 1 (autodetect) to signal that no standard is
921 selected yet. */
922 state->std = 1;
923
924 msp_reset(client);
925
926 if (state->has_i2s_conf)
927 msp_write_dem(client, 0x40, state->i2s_mode);
928
929 /* step-by-step initialisation, as described in the manual */
930 modus = msp34xxg_modus(client);
931 modus |= tuner ? 0x100 : 0;
932 msp_write_dem(client, 0x30, modus);
933
934 /* write the dsps that may have an influence on
935 standard/audio autodetection right now */
936 msp34xxg_set_sources(client);
937
938 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
939 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
940 if (state->has_nicam)
941 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
942
943 /* set identification threshold. Personally, I
944 * I set it to a higher value than the default
945 * of 0x190 to ignore noisy stereo signals.
946 * this needs tuning. (recommended range 0x00a0-0x03c0)
947 * 0x7f0 = forced mono mode
948 *
949 * a2 threshold for stereo/bilingual.
950 * Note: this register is part of the Manual/Compatibility mode.
951 * It is supported by all 'G'-family chips.
952 */
953 msp_write_dem(client, 0x22, msp_stereo_thresh);
954 }
955
956 int msp34xxg_thread(void *data)
957 {
958 struct i2c_client *client = data;
959 struct msp_state *state = i2c_get_clientdata(client);
960 int val, i;
961
962 v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n");
963 set_freezable();
964 for (;;) {
965 v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n");
966 msp_sleep(state, -1);
967 v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n");
968
969 restart:
970 v4l_dbg(1, msp_debug, client, "thread: restart scan\n");
971 state->restart = 0;
972 if (kthread_should_stop())
973 break;
974
975 if (state->mode == MSP_MODE_EXTERN) {
976 /* no carrier scan needed, just unmute */
977 v4l_dbg(1, msp_debug, client,
978 "thread: no carrier scan\n");
979 state->scan_in_progress = 0;
980 msp_set_audio(client);
981 continue;
982 }
983
984 /* setup the chip*/
985 msp34xxg_reset(client);
986 state->std = state->radio ? 0x40 :
987 (state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
988 msp_write_dem(client, 0x20, state->std);
989 /* start autodetect */
990 if (state->std != 1)
991 goto unmute;
992
993 /* watch autodetect */
994 v4l_dbg(1, msp_debug, client,
995 "started autodetect, waiting for result\n");
996 for (i = 0; i < 10; i++) {
997 if (msp_sleep(state, 100))
998 goto restart;
999
1000 /* check results */
1001 val = msp_read_dem(client, 0x7e);
1002 if (val < 0x07ff) {
1003 state->std = val;
1004 break;
1005 }
1006 v4l_dbg(2, msp_debug, client,
1007 "detection still in progress\n");
1008 }
1009 if (state->std == 1) {
1010 v4l_dbg(1, msp_debug, client,
1011 "detection still in progress after 10 tries. giving up.\n");
1012 continue;
1013 }
1014
1015 unmute:
1016 v4l_dbg(1, msp_debug, client,
1017 "detected standard: %s (0x%04x)\n",
1018 msp_standard_std_name(state->std), state->std);
1019
1020 if (state->std == 9) {
1021 /* AM NICAM mode */
1022 msp_write_dsp(client, 0x0e, 0x7c00);
1023 }
1024
1025 /* unmute: dispatch sound to scart output, set scart volume */
1026 msp_set_audio(client);
1027
1028 /* restore ACB */
1029 if (msp_write_dsp(client, 0x13, state->acb))
1030 return -1;
1031
1032 /* the periodic stereo/SAP check is only relevant for
1033 the 0x20 standard (BTSC) */
1034 if (state->std != 0x20)
1035 continue;
1036
1037 state->watch_stereo = 1;
1038
1039 /* monitor tv audio mode, the first time don't wait
1040 in order to get a quick stereo/SAP update */
1041 watch_stereo(client);
1042 while (state->watch_stereo) {
1043 watch_stereo(client);
1044 if (msp_sleep(state, 5000))
1045 goto restart;
1046 }
1047 }
1048 v4l_dbg(1, msp_debug, client, "thread: exit\n");
1049 return 0;
1050 }
1051
1052 static int msp34xxg_detect_stereo(struct i2c_client *client)
1053 {
1054 struct msp_state *state = i2c_get_clientdata(client);
1055 int status = msp_read_dem(client, 0x0200);
1056 int is_bilingual = status & 0x100;
1057 int is_stereo = status & 0x40;
1058 int oldrx = state->rxsubchans;
1059
1060 if (state->mode == MSP_MODE_EXTERN)
1061 return 0;
1062
1063 state->rxsubchans = 0;
1064 if (is_stereo)
1065 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1066 else
1067 state->rxsubchans = V4L2_TUNER_SUB_MONO;
1068 if (is_bilingual) {
1069 if (state->std == 0x20)
1070 state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1071 else
1072 state->rxsubchans =
1073 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1074 }
1075 v4l_dbg(1, msp_debug, client,
1076 "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1077 status, is_stereo, is_bilingual, state->rxsubchans);
1078 return (oldrx != state->rxsubchans);
1079 }
1080
1081 static void msp34xxg_set_audmode(struct i2c_client *client)
1082 {
1083 struct msp_state *state = i2c_get_clientdata(client);
1084
1085 if (state->std == 0x20) {
1086 if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1087 (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1088 state->audmode == V4L2_TUNER_MODE_LANG2)) {
1089 msp_write_dem(client, 0x20, 0x21);
1090 } else {
1091 msp_write_dem(client, 0x20, 0x20);
1092 }
1093 }
1094
1095 msp34xxg_set_sources(client);
1096 }
1097
1098 void msp_set_audmode(struct i2c_client *client)
1099 {
1100 struct msp_state *state = i2c_get_clientdata(client);
1101
1102 switch (state->opmode) {
1103 case OPMODE_MANUAL:
1104 case OPMODE_AUTODETECT:
1105 msp3400c_set_audmode(client);
1106 break;
1107 case OPMODE_AUTOSELECT:
1108 msp34xxg_set_audmode(client);
1109 break;
1110 }
1111 }
1112
1113 int msp_detect_stereo(struct i2c_client *client)
1114 {
1115 struct msp_state *state = i2c_get_clientdata(client);
1116
1117 switch (state->opmode) {
1118 case OPMODE_MANUAL:
1119 case OPMODE_AUTODETECT:
1120 return msp3400c_detect_stereo(client);
1121 case OPMODE_AUTOSELECT:
1122 return msp34xxg_detect_stereo(client);
1123 }
1124 return 0;
1125 }
1126
Support for the Chinese Samsung S3C2440 based development boards