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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / media / i2c / msp3400-kthreads.c
blobf8b51714f2f9ba7838a8cba3d039bf26a77b037e
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/i2c.h>
26 #include <linux/freezer.h>
27 #include <linux/videodev2.h>
28 #include <media/v4l2-common.h>
29 #include <media/msp3400.h>
30 #include <linux/kthread.h>
31 #include <linux/suspend.h>
32 #include "msp3400-driver.h"
33
34 /* this one uses the automatic sound standard detection of newer msp34xx
35 chip versions */
36 static struct {
37 int retval;
38 int main, second;
39 char *name;
40 v4l2_std_id std;
41 } msp_stdlist[] = {
42 { 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL },
43 { 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL },
44 { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72),
45 "4.5/4.72 M Dual FM-Stereo", V4L2_STD_MN },
46 { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875),
47 "5.5/5.74 B/G Dual FM-Stereo", V4L2_STD_BG },
48 { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125),
49 "6.5/6.25 D/K1 Dual FM-Stereo", V4L2_STD_DK },
50 { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875),
51 "6.5/6.74 D/K2 Dual FM-Stereo", V4L2_STD_DK },
52 { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
53 "6.5 D/K FM-Mono (HDEV3)", V4L2_STD_DK },
54 { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875),
55 "6.5/5.74 D/K3 Dual FM-Stereo", V4L2_STD_DK },
56 { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85),
57 "5.5/5.85 B/G NICAM FM", V4L2_STD_BG },
58 { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
59 "6.5/5.85 L NICAM AM", V4L2_STD_L },
60 { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55),
61 "6.0/6.55 I NICAM FM", V4L2_STD_PAL_I },
62 { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
63 "6.5/5.85 D/K NICAM FM", V4L2_STD_DK },
64 { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
65 "6.5/5.85 D/K NICAM FM (HDEV2)", V4L2_STD_DK },
66 { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
67 "6.5/5.85 D/K NICAM FM (HDEV3)", V4L2_STD_DK },
68 { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
69 "4.5 M BTSC-Stereo", V4L2_STD_MTS },
70 { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
71 "4.5 M BTSC-Mono + SAP", V4L2_STD_MTS },
72 { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
73 "4.5 M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP },
74 { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7),
75 "10.7 FM-Stereo Radio", V4L2_STD_ALL },
76 { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
77 "6.5 SAT-Mono", V4L2_STD_ALL },
78 { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20),
79 "7.02/7.20 SAT-Stereo", V4L2_STD_ALL },
80 { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2),
81 "7.2 SAT ADR", V4L2_STD_ALL },
82 { -1, 0, 0, NULL, 0 }, /* EOF */
83 };
84
85 static struct msp3400c_init_data_dem {
86 int fir1[6];
87 int fir2[6];
88 int cdo1;
89 int cdo2;
90 int ad_cv;
91 int mode_reg;
92 int dsp_src;
93 int dsp_matrix;
94 } msp3400c_init_data[] = {
95 { /* AM (for carrier detect / msp3400) */
96 {75, 19, 36, 35, 39, 40},
97 {75, 19, 36, 35, 39, 40},
98 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
99 0x00d0, 0x0500, 0x0020, 0x3000
100 }, { /* AM (for carrier detect / msp3410) */
101 {-1, -1, -8, 2, 59, 126},
102 {-1, -1, -8, 2, 59, 126},
103 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
104 0x00d0, 0x0100, 0x0020, 0x3000
105 }, { /* FM Radio */
106 {-8, -8, 4, 6, 78, 107},
107 {-8, -8, 4, 6, 78, 107},
108 MSP_CARRIER(10.7), MSP_CARRIER(10.7),
109 0x00d0, 0x0480, 0x0020, 0x3000
110 }, { /* Terrestrial FM-mono + FM-stereo */
111 {3, 18, 27, 48, 66, 72},
112 {3, 18, 27, 48, 66, 72},
113 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
114 0x00d0, 0x0480, 0x0030, 0x3000
115 }, { /* Sat FM-mono */
116 { 1, 9, 14, 24, 33, 37},
117 { 3, 18, 27, 48, 66, 72},
118 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
119 0x00c6, 0x0480, 0x0000, 0x3000
120 }, { /* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */
121 {-2, -8, -10, 10, 50, 86},
122 {3, 18, 27, 48, 66, 72},
123 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
124 0x00d0, 0x0040, 0x0120, 0x3000
125 }, { /* NICAM/FM -- I (6.0/6.552) */
126 {2, 4, -6, -4, 40, 94},
127 {3, 18, 27, 48, 66, 72},
128 MSP_CARRIER(6.0), MSP_CARRIER(6.0),
129 0x00d0, 0x0040, 0x0120, 0x3000
130 }, { /* NICAM/AM -- L (6.5/5.85) */
131 {-2, -8, -10, 10, 50, 86},
132 {-4, -12, -9, 23, 79, 126},
133 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
134 0x00c6, 0x0140, 0x0120, 0x7c00
135 },
136 };
137
138 struct msp3400c_carrier_detect {
139 int cdo;
140 char *name;
141 };
142
143 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
144 /* main carrier */
145 { MSP_CARRIER(4.5), "4.5 NTSC" },
146 { MSP_CARRIER(5.5), "5.5 PAL B/G" },
147 { MSP_CARRIER(6.0), "6.0 PAL I" },
148 { MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" }
149 };
150
151 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
152 /* PAL B/G */
153 { MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
154 { MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
155 };
156
157 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
158 /* PAL SAT / SECAM */
159 { MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" },
160 { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
161 { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
162 { MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
163 { MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
164 { MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
165 };
166
167 /* ------------------------------------------------------------------------ */
168
169 const char *msp_standard_std_name(int std)
170 {
171 int i;
172
173 for (i = 0; msp_stdlist[i].name != NULL; i++)
174 if (msp_stdlist[i].retval == std)
175 return msp_stdlist[i].name;
176 return "unknown";
177 }
178
179 static v4l2_std_id msp_standard_std(int std)
180 {
181 int i;
182
183 for (i = 0; msp_stdlist[i].name != NULL; i++)
184 if (msp_stdlist[i].retval == std)
185 return msp_stdlist[i].std;
186 return V4L2_STD_ALL;
187 }
188
189 static void msp_set_source(struct i2c_client *client, u16 src)
190 {
191 struct msp_state *state = to_state(i2c_get_clientdata(client));
192
193 if (msp_dolby) {
194 msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
195 msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
196 } else {
197 msp_write_dsp(client, 0x0008, src);
198 msp_write_dsp(client, 0x0009, src);
199 }
200 msp_write_dsp(client, 0x000a, src);
201 msp_write_dsp(client, 0x000b, src);
202 msp_write_dsp(client, 0x000c, src);
203 if (state->has_scart2_out)
204 msp_write_dsp(client, 0x0041, src);
205 }
206
207 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
208 {
209 msp_write_dem(client, 0x0093, cdo1 & 0xfff);
210 msp_write_dem(client, 0x009b, cdo1 >> 12);
211 msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
212 msp_write_dem(client, 0x00ab, cdo2 >> 12);
213 msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
214 }
215
216 void msp3400c_set_mode(struct i2c_client *client, int mode)
217 {
218 struct msp_state *state = to_state(i2c_get_clientdata(client));
219 struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
220 int tuner = (state->route_in >> 3) & 1;
221 int i;
222
223 v4l_dbg(1, msp_debug, client, "set_mode: %d\n", mode);
224 state->mode = mode;
225 state->rxsubchans = V4L2_TUNER_SUB_MONO;
226
227 msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
228
229 for (i = 5; i >= 0; i--) /* fir 1 */
230 msp_write_dem(client, 0x0001, data->fir1[i]);
231
232 msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
233 msp_write_dem(client, 0x0005, 0x0040);
234 msp_write_dem(client, 0x0005, 0x0000);
235 for (i = 5; i >= 0; i--)
236 msp_write_dem(client, 0x0005, data->fir2[i]);
237
238 msp_write_dem(client, 0x0083, data->mode_reg);
239
240 msp3400c_set_carrier(client, data->cdo1, data->cdo2);
241
242 msp_set_source(client, data->dsp_src);
243 /* set prescales */
244
245 /* volume prescale for SCART (AM mono input) */
246 msp_write_dsp(client, 0x000d, 0x1900);
247 msp_write_dsp(client, 0x000e, data->dsp_matrix);
248 if (state->has_nicam) /* nicam prescale */
249 msp_write_dsp(client, 0x0010, 0x5a00);
250 }
251
252 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
253 nor do they support stereo BTSC. */
254 static void msp3400c_set_audmode(struct i2c_client *client)
255 {
256 static char *strmode[] = {
257 "mono", "stereo", "lang2", "lang1", "lang1+lang2"
258 };
259 struct msp_state *state = to_state(i2c_get_clientdata(client));
260 char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
261 strmode[state->audmode] : "unknown";
262 int src = 0; /* channel source: FM/AM, nicam or SCART */
263 int audmode = state->audmode;
264
265 if (state->opmode == OPMODE_AUTOSELECT) {
266 /* this method would break everything, let's make sure
267 * it's never called
268 */
269 v4l_dbg(1, msp_debug, client,
270 "set_audmode called with mode=%d instead of set_source (ignored)\n",
271 state->audmode);
272 return;
273 }
274
275 /* Note: for the C and D revs no NTSC stereo + SAP is possible as
276 the hardware does not support SAP. So the rxsubchans combination
277 of STEREO | LANG2 does not occur. */
278
279 if (state->mode != MSP_MODE_EXTERN) {
280 /* switch to mono if only mono is available */
281 if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
282 audmode = V4L2_TUNER_MODE_MONO;
283 /* if bilingual */
284 else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
285 /* and mono or stereo, then fallback to lang1 */
286 if (audmode == V4L2_TUNER_MODE_MONO ||
287 audmode == V4L2_TUNER_MODE_STEREO)
288 audmode = V4L2_TUNER_MODE_LANG1;
289 }
290 /* if stereo, and audmode is not mono, then switch to stereo */
291 else if (audmode != V4L2_TUNER_MODE_MONO)
292 audmode = V4L2_TUNER_MODE_STEREO;
293 }
294
295 /* switch demodulator */
296 switch (state->mode) {
297 case MSP_MODE_FM_TERRA:
298 v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr);
299 switch (audmode) {
300 case V4L2_TUNER_MODE_STEREO:
301 msp_write_dsp(client, 0x000e, 0x3001);
302 break;
303 case V4L2_TUNER_MODE_MONO:
304 case V4L2_TUNER_MODE_LANG1:
305 case V4L2_TUNER_MODE_LANG2:
306 case V4L2_TUNER_MODE_LANG1_LANG2:
307 msp_write_dsp(client, 0x000e, 0x3000);
308 break;
309 }
310 break;
311 case MSP_MODE_FM_SAT:
312 v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr);
313 switch (audmode) {
314 case V4L2_TUNER_MODE_MONO:
315 msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
316 break;
317 case V4L2_TUNER_MODE_STEREO:
318 case V4L2_TUNER_MODE_LANG1_LANG2:
319 msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
320 break;
321 case V4L2_TUNER_MODE_LANG1:
322 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
323 break;
324 case V4L2_TUNER_MODE_LANG2:
325 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
326 break;
327 }
328 break;
329 case MSP_MODE_FM_NICAM1:
330 case MSP_MODE_FM_NICAM2:
331 case MSP_MODE_AM_NICAM:
332 v4l_dbg(1, msp_debug, client,
333 "NICAM set_audmode: %s\n", modestr);
334 if (state->nicam_on)
335 src = 0x0100; /* NICAM */
336 break;
337 case MSP_MODE_BTSC:
338 v4l_dbg(1, msp_debug, client,
339 "BTSC set_audmode: %s\n", modestr);
340 break;
341 case MSP_MODE_EXTERN:
342 v4l_dbg(1, msp_debug, client,
343 "extern set_audmode: %s\n", modestr);
344 src = 0x0200; /* SCART */
345 break;
346 case MSP_MODE_FM_RADIO:
347 v4l_dbg(1, msp_debug, client,
348 "FM-Radio set_audmode: %s\n", modestr);
349 break;
350 default:
351 v4l_dbg(1, msp_debug, client, "mono set_audmode\n");
352 return;
353 }
354
355 /* switch audio */
356 v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode);
357 switch (audmode) {
358 case V4L2_TUNER_MODE_STEREO:
359 case V4L2_TUNER_MODE_LANG1_LANG2:
360 src |= 0x0020;
361 break;
362 case V4L2_TUNER_MODE_MONO:
363 if (state->mode == MSP_MODE_AM_NICAM) {
364 v4l_dbg(1, msp_debug, client, "switching to AM mono\n");
365 /* AM mono decoding is handled by tuner, not MSP chip */
366 /* SCART switching control register */
367 msp_set_scart(client, SCART_MONO, 0);
368 src = 0x0200;
369 break;
370 }
371 if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
372 src = 0x0030;
373 break;
374 case V4L2_TUNER_MODE_LANG1:
375 break;
376 case V4L2_TUNER_MODE_LANG2:
377 src |= 0x0010;
378 break;
379 }
380 v4l_dbg(1, msp_debug, client,
381 "set_audmode final source/matrix = 0x%x\n", src);
382
383 msp_set_source(client, src);
384 }
385
386 static void msp3400c_print_mode(struct i2c_client *client)
387 {
388 struct msp_state *state = to_state(i2c_get_clientdata(client));
389
390 if (state->main == state->second)
391 v4l_dbg(1, msp_debug, client,
392 "mono sound carrier: %d.%03d MHz\n",
393 state->main / 910000, (state->main / 910) % 1000);
394 else
395 v4l_dbg(1, msp_debug, client,
396 "main sound carrier: %d.%03d MHz\n",
397 state->main / 910000, (state->main / 910) % 1000);
398 if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
399 v4l_dbg(1, msp_debug, client,
400 "NICAM/FM carrier : %d.%03d MHz\n",
401 state->second / 910000, (state->second/910) % 1000);
402 if (state->mode == MSP_MODE_AM_NICAM)
403 v4l_dbg(1, msp_debug, client,
404 "NICAM/AM carrier : %d.%03d MHz\n",
405 state->second / 910000, (state->second / 910) % 1000);
406 if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
407 v4l_dbg(1, msp_debug, client,
408 "FM-stereo carrier : %d.%03d MHz\n",
409 state->second / 910000, (state->second / 910) % 1000);
410 }
411 }
412
413 /* ----------------------------------------------------------------------- */
414
415 static int msp3400c_detect_stereo(struct i2c_client *client)
416 {
417 struct msp_state *state = to_state(i2c_get_clientdata(client));
418 int val;
419 int rxsubchans = state->rxsubchans;
420 int newnicam = state->nicam_on;
421 int update = 0;
422
423 switch (state->mode) {
424 case MSP_MODE_FM_TERRA:
425 val = msp_read_dsp(client, 0x18);
426 if (val > 32767)
427 val -= 65536;
428 v4l_dbg(2, msp_debug, client,
429 "stereo detect register: %d\n", val);
430 if (val > 8192) {
431 rxsubchans = V4L2_TUNER_SUB_STEREO;
432 } else if (val < -4096) {
433 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
434 } else {
435 rxsubchans = V4L2_TUNER_SUB_MONO;
436 }
437 newnicam = 0;
438 break;
439 case MSP_MODE_FM_NICAM1:
440 case MSP_MODE_FM_NICAM2:
441 case MSP_MODE_AM_NICAM:
442 val = msp_read_dem(client, 0x23);
443 v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
444 val & 1, (val & 0x1e) >> 1);
445
446 if (val & 1) {
447 /* nicam synced */
448 switch ((val & 0x1e) >> 1) {
449 case 0:
450 case 8:
451 rxsubchans = V4L2_TUNER_SUB_STEREO;
452 break;
453 case 1:
454 case 9:
455 rxsubchans = V4L2_TUNER_SUB_MONO;
456 break;
457 case 2:
458 case 10:
459 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
460 break;
461 default:
462 rxsubchans = V4L2_TUNER_SUB_MONO;
463 break;
464 }
465 newnicam = 1;
466 } else {
467 newnicam = 0;
468 rxsubchans = V4L2_TUNER_SUB_MONO;
469 }
470 break;
471 }
472 if (rxsubchans != state->rxsubchans) {
473 update = 1;
474 v4l_dbg(1, msp_debug, client,
475 "watch: rxsubchans %02x => %02x\n",
476 state->rxsubchans, rxsubchans);
477 state->rxsubchans = rxsubchans;
478 }
479 if (newnicam != state->nicam_on) {
480 update = 1;
481 v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n",
482 state->nicam_on, newnicam);
483 state->nicam_on = newnicam;
484 }
485 return update;
486 }
487
488 /*
489 * A kernel thread for msp3400 control -- we don't want to block the
490 * in the ioctl while doing the sound carrier & stereo detect
491 */
492 /* stereo/multilang monitoring */
493 static void watch_stereo(struct i2c_client *client)
494 {
495 struct msp_state *state = to_state(i2c_get_clientdata(client));
496
497 if (msp_detect_stereo(client))
498 msp_set_audmode(client);
499
500 if (msp_once)
501 state->watch_stereo = 0;
502 }
503
504 int msp3400c_thread(void *data)
505 {
506 struct i2c_client *client = data;
507 struct msp_state *state = to_state(i2c_get_clientdata(client));
508 struct msp3400c_carrier_detect *cd;
509 int count, max1, max2, val1, val2, val, i;
510
511 v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n");
512 state->detected_std = V4L2_STD_ALL;
513 set_freezable();
514 for (;;) {
515 v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n");
516 msp_sleep(state, -1);
517 v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n");
518
519 restart:
520 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
521 state->restart = 0;
522 if (kthread_should_stop())
523 break;
524
525 if (state->radio || MSP_MODE_EXTERN == state->mode) {
526 /* no carrier scan, just unmute */
527 v4l_dbg(1, msp_debug, client,
528 "thread: no carrier scan\n");
529 state->scan_in_progress = 0;
530 msp_update_volume(state);
531 continue;
532 }
533
534 /* mute audio */
535 state->scan_in_progress = 1;
536 msp_update_volume(state);
537
538 msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
539 val1 = val2 = 0;
540 max1 = max2 = -1;
541 state->watch_stereo = 0;
542 state->nicam_on = 0;
543
544 /* wait for tuner to settle down after a channel change */
545 if (msp_sleep(state, 200))
546 goto restart;
547
548 /* carrier detect pass #1 -- main carrier */
549 cd = msp3400c_carrier_detect_main;
550 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
551
552 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
553 /* autodetect doesn't work well with AM ... */
554 max1 = 3;
555 count = 0;
556 v4l_dbg(1, msp_debug, client, "AM sound override\n");
557 }
558
559 for (i = 0; i < count; i++) {
560 msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
561 if (msp_sleep(state, 100))
562 goto restart;
563 val = msp_read_dsp(client, 0x1b);
564 if (val > 32767)
565 val -= 65536;
566 if (val1 < val)
567 val1 = val, max1 = i;
568 v4l_dbg(1, msp_debug, client,
569 "carrier1 val: %5d / %s\n", val, cd[i].name);
570 }
571
572 /* carrier detect pass #2 -- second (stereo) carrier */
573 switch (max1) {
574 case 1: /* 5.5 */
575 cd = msp3400c_carrier_detect_55;
576 count = ARRAY_SIZE(msp3400c_carrier_detect_55);
577 break;
578 case 3: /* 6.5 */
579 cd = msp3400c_carrier_detect_65;
580 count = ARRAY_SIZE(msp3400c_carrier_detect_65);
581 break;
582 case 0: /* 4.5 */
583 case 2: /* 6.0 */
584 default:
585 cd = NULL;
586 count = 0;
587 break;
588 }
589
590 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
591 /* autodetect doesn't work well with AM ... */
592 cd = NULL;
593 count = 0;
594 max2 = 0;
595 }
596 for (i = 0; i < count; i++) {
597 msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
598 if (msp_sleep(state, 100))
599 goto restart;
600 val = msp_read_dsp(client, 0x1b);
601 if (val > 32767)
602 val -= 65536;
603 if (val2 < val)
604 val2 = val, max2 = i;
605 v4l_dbg(1, msp_debug, client,
606 "carrier2 val: %5d / %s\n", val, cd[i].name);
607 }
608
609 /* program the msp3400 according to the results */
610 state->main = msp3400c_carrier_detect_main[max1].cdo;
611 switch (max1) {
612 case 1: /* 5.5 */
613 state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
614 if (max2 == 0) {
615 /* B/G FM-stereo */
616 state->second = msp3400c_carrier_detect_55[max2].cdo;
617 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
618 state->watch_stereo = 1;
619 } else if (max2 == 1 && state->has_nicam) {
620 /* B/G NICAM */
621 state->second = msp3400c_carrier_detect_55[max2].cdo;
622 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
623 state->nicam_on = 1;
624 state->watch_stereo = 1;
625 } else {
626 goto no_second;
627 }
628 break;
629 case 2: /* 6.0 */
630 /* PAL I NICAM */
631 state->detected_std = V4L2_STD_PAL_I;
632 state->second = MSP_CARRIER(6.552);
633 msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
634 state->nicam_on = 1;
635 state->watch_stereo = 1;
636 break;
637 case 3: /* 6.5 */
638 if (max2 == 1 || max2 == 2) {
639 /* D/K FM-stereo */
640 state->second = msp3400c_carrier_detect_65[max2].cdo;
641 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
642 state->watch_stereo = 1;
643 state->detected_std = V4L2_STD_DK;
644 } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
645 /* L NICAM or AM-mono */
646 state->second = msp3400c_carrier_detect_65[max2].cdo;
647 msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
648 state->watch_stereo = 1;
649 state->detected_std = V4L2_STD_L;
650 } else if (max2 == 0 && state->has_nicam) {
651 /* D/K NICAM */
652 state->second = msp3400c_carrier_detect_65[max2].cdo;
653 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
654 state->nicam_on = 1;
655 state->watch_stereo = 1;
656 state->detected_std = V4L2_STD_DK;
657 } else {
658 goto no_second;
659 }
660 break;
661 case 0: /* 4.5 */
662 state->detected_std = V4L2_STD_MN;
663 default:
664 no_second:
665 state->second = msp3400c_carrier_detect_main[max1].cdo;
666 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
667 break;
668 }
669 msp3400c_set_carrier(client, state->second, state->main);
670
671 /* unmute */
672 state->scan_in_progress = 0;
673 msp3400c_set_audmode(client);
674 msp_update_volume(state);
675
676 if (msp_debug)
677 msp3400c_print_mode(client);
678
679 /* monitor tv audio mode, the first time don't wait
680 so long to get a quick stereo/bilingual result */
681 count = 3;
682 while (state->watch_stereo) {
683 if (msp_sleep(state, count ? 1000 : 5000))
684 goto restart;
685 if (count)
686 count--;
687 watch_stereo(client);
688 }
689 }
690 v4l_dbg(1, msp_debug, client, "thread: exit\n");
691 return 0;
692 }
693
694
695 int msp3410d_thread(void *data)
696 {
697 struct i2c_client *client = data;
698 struct msp_state *state = to_state(i2c_get_clientdata(client));
699 int val, i, std, count;
700
701 v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n");
702 state->detected_std = V4L2_STD_ALL;
703 set_freezable();
704 for (;;) {
705 v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n");
706 msp_sleep(state, -1);
707 v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n");
708
709 restart:
710 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
711 state->restart = 0;
712 if (kthread_should_stop())
713 break;
714
715 if (state->mode == MSP_MODE_EXTERN) {
716 /* no carrier scan needed, just unmute */
717 v4l_dbg(1, msp_debug, client,
718 "thread: no carrier scan\n");
719 state->scan_in_progress = 0;
720 msp_update_volume(state);
721 continue;
722 }
723
724 /* mute audio */
725 state->scan_in_progress = 1;
726 msp_update_volume(state);
727
728 /* start autodetect. Note: autodetect is not supported for
729 NTSC-M and radio, hence we force the standard in those
730 cases. */
731 if (state->radio)
732 std = 0x40;
733 else
734 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
735 state->watch_stereo = 0;
736 state->nicam_on = 0;
737
738 /* wait for tuner to settle down after a channel change */
739 if (msp_sleep(state, 200))
740 goto restart;
741
742 if (msp_debug)
743 v4l_dbg(2, msp_debug, client,
744 "setting standard: %s (0x%04x)\n",
745 msp_standard_std_name(std), std);
746
747 if (std != 1) {
748 /* programmed some specific mode */
749 val = std;
750 } else {
751 /* triggered autodetect */
752 msp_write_dem(client, 0x20, std);
753 for (;;) {
754 if (msp_sleep(state, 100))
755 goto restart;
756
757 /* check results */
758 val = msp_read_dem(client, 0x7e);
759 if (val < 0x07ff)
760 break;
761 v4l_dbg(2, msp_debug, client,
762 "detection still in progress\n");
763 }
764 }
765 for (i = 0; msp_stdlist[i].name != NULL; i++)
766 if (msp_stdlist[i].retval == val)
767 break;
768 v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n",
769 msp_standard_std_name(val), val);
770 state->main = msp_stdlist[i].main;
771 state->second = msp_stdlist[i].second;
772 state->std = val;
773 state->rxsubchans = V4L2_TUNER_SUB_MONO;
774
775 if (msp_amsound && !state->radio &&
776 (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
777 /* autodetection has failed, let backup */
778 v4l_dbg(1, msp_debug, client, "autodetection failed,"
779 " switching to backup standard: %s (0x%04x)\n",
780 msp_stdlist[8].name ?
781 msp_stdlist[8].name : "unknown", val);
782 state->std = val = 0x0009;
783 msp_write_dem(client, 0x20, val);
784 } else {
785 state->detected_std = msp_standard_std(state->std);
786 }
787
788 /* set stereo */
789 switch (val) {
790 case 0x0008: /* B/G NICAM */
791 case 0x000a: /* I NICAM */
792 case 0x000b: /* D/K NICAM */
793 if (val == 0x000a)
794 state->mode = MSP_MODE_FM_NICAM2;
795 else
796 state->mode = MSP_MODE_FM_NICAM1;
797 /* just turn on stereo */
798 state->nicam_on = 1;
799 state->watch_stereo = 1;
800 break;
801 case 0x0009:
802 state->mode = MSP_MODE_AM_NICAM;
803 state->nicam_on = 1;
804 state->watch_stereo = 1;
805 break;
806 case 0x0020: /* BTSC */
807 /* The pre-'G' models only have BTSC-mono */
808 state->mode = MSP_MODE_BTSC;
809 break;
810 case 0x0040: /* FM radio */
811 state->mode = MSP_MODE_FM_RADIO;
812 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
813 /* not needed in theory if we have radio, but
814 short programming enables carrier mute */
815 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
816 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
817 MSP_CARRIER(10.7));
818 break;
819 case 0x0002:
820 case 0x0003:
821 case 0x0004:
822 case 0x0005:
823 state->mode = MSP_MODE_FM_TERRA;
824 state->watch_stereo = 1;
825 break;
826 }
827
828 /* set various prescales */
829 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
830 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
831 if (state->has_nicam)
832 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
833
834 if (state->has_i2s_conf)
835 msp_write_dem(client, 0x40, state->i2s_mode);
836
837 /* unmute */
838 msp3400c_set_audmode(client);
839 state->scan_in_progress = 0;
840 msp_update_volume(state);
841
842 /* monitor tv audio mode, the first time don't wait
843 so long to get a quick stereo/bilingual result */
844 count = 3;
845 while (state->watch_stereo) {
846 if (msp_sleep(state, count ? 1000 : 5000))
847 goto restart;
848 if (count)
849 count--;
850 watch_stereo(client);
851 }
852 }
853 v4l_dbg(1, msp_debug, client, "thread: exit\n");
854 return 0;
855 }
856
857 /* ----------------------------------------------------------------------- */
858
859 /* msp34xxG + (autoselect no-thread)
860 * this one uses both automatic standard detection and automatic sound
861 * select which are available in the newer G versions
862 * struct msp: only norm, acb and source are really used in this mode
863 */
864
865 static int msp34xxg_modus(struct i2c_client *client)
866 {
867 struct msp_state *state = to_state(i2c_get_clientdata(client));
868
869 if (state->radio) {
870 v4l_dbg(1, msp_debug, client, "selected radio modus\n");
871 return 0x0001;
872 }
873 if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
874 v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n");
875 return 0x4001;
876 }
877 if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
878 v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n");
879 return 0x0001;
880 }
881 if (state->v4l2_std == V4L2_STD_SECAM_L) {
882 v4l_dbg(1, msp_debug, client, "selected SECAM-L modus\n");
883 return 0x6001;
884 }
885 if (state->v4l2_std & V4L2_STD_MN) {
886 v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n");
887 return 0x2001;
888 }
889 return 0x7001;
890 }
891
892 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
893 {
894 struct msp_state *state = to_state(i2c_get_clientdata(client));
895 int source, matrix;
896
897 switch (state->audmode) {
898 case V4L2_TUNER_MODE_MONO:
899 source = 0; /* mono only */
900 matrix = 0x30;
901 break;
902 case V4L2_TUNER_MODE_LANG2:
903 source = 4; /* stereo or B */
904 matrix = 0x10;
905 break;
906 case V4L2_TUNER_MODE_LANG1_LANG2:
907 source = 1; /* stereo or A|B */
908 matrix = 0x20;
909 break;
910 case V4L2_TUNER_MODE_LANG1:
911 source = 3; /* stereo or A */
912 matrix = 0x00;
913 break;
914 case V4L2_TUNER_MODE_STEREO:
915 default:
916 source = 3; /* stereo or A */
917 matrix = 0x20;
918 break;
919 }
920
921 if (in == MSP_DSP_IN_TUNER)
922 source = (source << 8) | 0x20;
923 /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
924 instead of 11, 12, 13. So we add one for that msp version. */
925 else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
926 source = ((in + 1) << 8) | matrix;
927 else
928 source = (in << 8) | matrix;
929
930 v4l_dbg(1, msp_debug, client,
931 "set source to %d (0x%x) for output %02x\n", in, source, reg);
932 msp_write_dsp(client, reg, source);
933 }
934
935 static void msp34xxg_set_sources(struct i2c_client *client)
936 {
937 struct msp_state *state = to_state(i2c_get_clientdata(client));
938 u32 in = state->route_in;
939
940 msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
941 /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
942 msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
943 msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
944 msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
945 if (state->has_scart2_out)
946 msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
947 msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
948 }
949
950 /* (re-)initialize the msp34xxg */
951 static void msp34xxg_reset(struct i2c_client *client)
952 {
953 struct msp_state *state = to_state(i2c_get_clientdata(client));
954 int tuner = (state->route_in >> 3) & 1;
955 int modus;
956
957 /* initialize std to 1 (autodetect) to signal that no standard is
958 selected yet. */
959 state->std = 1;
960
961 msp_reset(client);
962
963 if (state->has_i2s_conf)
964 msp_write_dem(client, 0x40, state->i2s_mode);
965
966 /* step-by-step initialisation, as described in the manual */
967 modus = msp34xxg_modus(client);
968 modus |= tuner ? 0x100 : 0;
969 msp_write_dem(client, 0x30, modus);
970
971 /* write the dsps that may have an influence on
972 standard/audio autodetection right now */
973 msp34xxg_set_sources(client);
974
975 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
976 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
977 if (state->has_nicam)
978 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
979
980 /* set identification threshold. Personally, I
981 * I set it to a higher value than the default
982 * of 0x190 to ignore noisy stereo signals.
983 * this needs tuning. (recommended range 0x00a0-0x03c0)
984 * 0x7f0 = forced mono mode
985 *
986 * a2 threshold for stereo/bilingual.
987 * Note: this register is part of the Manual/Compatibility mode.
988 * It is supported by all 'G'-family chips.
989 */
990 msp_write_dem(client, 0x22, msp_stereo_thresh);
991 }
992
993 int msp34xxg_thread(void *data)
994 {
995 struct i2c_client *client = data;
996 struct msp_state *state = to_state(i2c_get_clientdata(client));
997 int val, i;
998
999 v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n");
1000 state->detected_std = V4L2_STD_ALL;
1001 set_freezable();
1002 for (;;) {
1003 v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n");
1004 msp_sleep(state, -1);
1005 v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n");
1006
1007 restart:
1008 v4l_dbg(1, msp_debug, client, "thread: restart scan\n");
1009 state->restart = 0;
1010 if (kthread_should_stop())
1011 break;
1012
1013 if (state->mode == MSP_MODE_EXTERN) {
1014 /* no carrier scan needed, just unmute */
1015 v4l_dbg(1, msp_debug, client,
1016 "thread: no carrier scan\n");
1017 state->scan_in_progress = 0;
1018 msp_update_volume(state);
1019 continue;
1020 }
1021
1022 /* setup the chip*/
1023 msp34xxg_reset(client);
1024 state->std = state->radio ? 0x40 :
1025 (state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
1026 msp_write_dem(client, 0x20, state->std);
1027 /* start autodetect */
1028 if (state->std != 1)
1029 goto unmute;
1030
1031 /* watch autodetect */
1032 v4l_dbg(1, msp_debug, client,
1033 "started autodetect, waiting for result\n");
1034 for (i = 0; i < 10; i++) {
1035 if (msp_sleep(state, 100))
1036 goto restart;
1037
1038 /* check results */
1039 val = msp_read_dem(client, 0x7e);
1040 if (val < 0x07ff) {
1041 state->std = val;
1042 break;
1043 }
1044 v4l_dbg(2, msp_debug, client,
1045 "detection still in progress\n");
1046 }
1047 if (state->std == 1) {
1048 v4l_dbg(1, msp_debug, client,
1049 "detection still in progress after 10 tries. giving up.\n");
1050 continue;
1051 }
1052
1053 unmute:
1054 v4l_dbg(1, msp_debug, client,
1055 "detected standard: %s (0x%04x)\n",
1056 msp_standard_std_name(state->std), state->std);
1057 state->detected_std = msp_standard_std(state->std);
1058
1059 if (state->std == 9) {
1060 /* AM NICAM mode */
1061 msp_write_dsp(client, 0x0e, 0x7c00);
1062 }
1063
1064 /* unmute: dispatch sound to scart output, set scart volume */
1065 msp_update_volume(state);
1066
1067 /* restore ACB */
1068 if (msp_write_dsp(client, 0x13, state->acb))
1069 return -1;
1070
1071 /* the periodic stereo/SAP check is only relevant for
1072 the 0x20 standard (BTSC) */
1073 if (state->std != 0x20)
1074 continue;
1075
1076 state->watch_stereo = 1;
1077
1078 /* monitor tv audio mode, the first time don't wait
1079 in order to get a quick stereo/SAP update */
1080 watch_stereo(client);
1081 while (state->watch_stereo) {
1082 watch_stereo(client);
1083 if (msp_sleep(state, 5000))
1084 goto restart;
1085 }
1086 }
1087 v4l_dbg(1, msp_debug, client, "thread: exit\n");
1088 return 0;
1089 }
1090
1091 static int msp34xxg_detect_stereo(struct i2c_client *client)
1092 {
1093 struct msp_state *state = to_state(i2c_get_clientdata(client));
1094 int status = msp_read_dem(client, 0x0200);
1095 int is_bilingual = status & 0x100;
1096 int is_stereo = status & 0x40;
1097 int oldrx = state->rxsubchans;
1098
1099 if (state->mode == MSP_MODE_EXTERN)
1100 return 0;
1101
1102 state->rxsubchans = 0;
1103 if (is_stereo)
1104 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1105 else
1106 state->rxsubchans = V4L2_TUNER_SUB_MONO;
1107 if (is_bilingual) {
1108 if (state->std == 0x20)
1109 state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1110 else
1111 state->rxsubchans =
1112 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1113 }
1114 v4l_dbg(1, msp_debug, client,
1115 "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1116 status, is_stereo, is_bilingual, state->rxsubchans);
1117 return (oldrx != state->rxsubchans);
1118 }
1119
1120 static void msp34xxg_set_audmode(struct i2c_client *client)
1121 {
1122 struct msp_state *state = to_state(i2c_get_clientdata(client));
1123
1124 if (state->std == 0x20) {
1125 if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1126 (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1127 state->audmode == V4L2_TUNER_MODE_LANG2)) {
1128 msp_write_dem(client, 0x20, 0x21);
1129 } else {
1130 msp_write_dem(client, 0x20, 0x20);
1131 }
1132 }
1133
1134 msp34xxg_set_sources(client);
1135 }
1136
1137 void msp_set_audmode(struct i2c_client *client)
1138 {
1139 struct msp_state *state = to_state(i2c_get_clientdata(client));
1140
1141 switch (state->opmode) {
1142 case OPMODE_MANUAL:
1143 case OPMODE_AUTODETECT:
1144 msp3400c_set_audmode(client);
1145 break;
1146 case OPMODE_AUTOSELECT:
1147 msp34xxg_set_audmode(client);
1148 break;
1149 }
1150 }
1151
1152 int msp_detect_stereo(struct i2c_client *client)
1153 {
1154 struct msp_state *state = to_state(i2c_get_clientdata(client));
1155
1156 switch (state->opmode) {
1157 case OPMODE_MANUAL:
1158 case OPMODE_AUTODETECT:
1159 return msp3400c_detect_stereo(client);
1160 case OPMODE_AUTOSELECT:
1161 return msp34xxg_detect_stereo(client);
1162 }
1163 return 0;
1164 }
1165
Linux with added FPC-III support