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Freezer: make kernel threads nonfreezable by default
[mirror_ubuntu-artful-kernel.git] / drivers / media / video / msp3400-kthreads.c
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 02110-1301, USA.
19 */
20
21
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/slab.h>
25 #include <linux/i2c.h>
26 #include <linux/freezer.h>
27 #include <linux/videodev.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 = 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 = 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[] = { "mono", "stereo", "lang2", "lang1", "lang1+lang2" };
228 struct msp_state *state = i2c_get_clientdata(client);
229 char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
230 strmode[state->audmode] : "unknown";
231 int src = 0; /* channel source: FM/AM, nicam or SCART */
232 int audmode = state->audmode;
233
234 if (state->opmode == OPMODE_AUTOSELECT) {
235 /* this method would break everything, let's make sure
236 * it's never called
237 */
238 v4l_dbg(1, msp_debug, client,
239 "set_audmode called with mode=%d instead of set_source (ignored)\n",
240 state->audmode);
241 return;
242 }
243
244 /* Note: for the C and D revs no NTSC stereo + SAP is possible as
245 the hardware does not support SAP. So the rxsubchans combination
246 of STEREO | LANG2 does not occur. */
247
248 if (state->mode != MSP_MODE_EXTERN) {
249 /* switch to mono if only mono is available */
250 if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
251 audmode = V4L2_TUNER_MODE_MONO;
252 /* if bilingual */
253 else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
254 /* and mono or stereo, then fallback to lang1 */
255 if (audmode == V4L2_TUNER_MODE_MONO ||
256 audmode == V4L2_TUNER_MODE_STEREO)
257 audmode = V4L2_TUNER_MODE_LANG1;
258 }
259 /* if stereo, and audmode is not mono, then switch to stereo */
260 else if (audmode != V4L2_TUNER_MODE_MONO)
261 audmode = V4L2_TUNER_MODE_STEREO;
262 }
263
264 /* switch demodulator */
265 switch (state->mode) {
266 case MSP_MODE_FM_TERRA:
267 v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr);
268 switch (audmode) {
269 case V4L2_TUNER_MODE_STEREO:
270 msp_write_dsp(client, 0x000e, 0x3001);
271 break;
272 case V4L2_TUNER_MODE_MONO:
273 case V4L2_TUNER_MODE_LANG1:
274 case V4L2_TUNER_MODE_LANG2:
275 case V4L2_TUNER_MODE_LANG1_LANG2:
276 msp_write_dsp(client, 0x000e, 0x3000);
277 break;
278 }
279 break;
280 case MSP_MODE_FM_SAT:
281 v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr);
282 switch (audmode) {
283 case V4L2_TUNER_MODE_MONO:
284 msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
285 break;
286 case V4L2_TUNER_MODE_STEREO:
287 case V4L2_TUNER_MODE_LANG1_LANG2:
288 msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
289 break;
290 case V4L2_TUNER_MODE_LANG1:
291 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
292 break;
293 case V4L2_TUNER_MODE_LANG2:
294 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
295 break;
296 }
297 break;
298 case MSP_MODE_FM_NICAM1:
299 case MSP_MODE_FM_NICAM2:
300 case MSP_MODE_AM_NICAM:
301 v4l_dbg(1, msp_debug, client, "NICAM set_audmode: %s\n",modestr);
302 if (state->nicam_on)
303 src = 0x0100; /* NICAM */
304 break;
305 case MSP_MODE_BTSC:
306 v4l_dbg(1, msp_debug, client, "BTSC set_audmode: %s\n",modestr);
307 break;
308 case MSP_MODE_EXTERN:
309 v4l_dbg(1, msp_debug, client, "extern set_audmode: %s\n",modestr);
310 src = 0x0200; /* SCART */
311 break;
312 case MSP_MODE_FM_RADIO:
313 v4l_dbg(1, msp_debug, client, "FM-Radio set_audmode: %s\n",modestr);
314 break;
315 default:
316 v4l_dbg(1, msp_debug, client, "mono set_audmode\n");
317 return;
318 }
319
320 /* switch audio */
321 v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode);
322 switch (audmode) {
323 case V4L2_TUNER_MODE_STEREO:
324 case V4L2_TUNER_MODE_LANG1_LANG2:
325 src |= 0x0020;
326 break;
327 case V4L2_TUNER_MODE_MONO:
328 if (state->mode == MSP_MODE_AM_NICAM) {
329 v4l_dbg(1, msp_debug, client, "switching to AM mono\n");
330 /* AM mono decoding is handled by tuner, not MSP chip */
331 /* SCART switching control register */
332 msp_set_scart(client, SCART_MONO, 0);
333 src = 0x0200;
334 break;
335 }
336 if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
337 src = 0x0030;
338 break;
339 case V4L2_TUNER_MODE_LANG1:
340 break;
341 case V4L2_TUNER_MODE_LANG2:
342 src |= 0x0010;
343 break;
344 }
345 v4l_dbg(1, msp_debug, client, "set_audmode final source/matrix = 0x%x\n", src);
346
347 msp_set_source(client, src);
348 }
349
350 static void msp3400c_print_mode(struct i2c_client *client)
351 {
352 struct msp_state *state = i2c_get_clientdata(client);
353
354 if (state->main == state->second) {
355 v4l_dbg(1, msp_debug, client, "mono sound carrier: %d.%03d MHz\n",
356 state->main / 910000, (state->main / 910) % 1000);
357 } else {
358 v4l_dbg(1, msp_debug, client, "main sound carrier: %d.%03d MHz\n",
359 state->main / 910000, (state->main / 910) % 1000);
360 }
361 if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
362 v4l_dbg(1, msp_debug, client, "NICAM/FM carrier : %d.%03d MHz\n",
363 state->second / 910000, (state->second/910) % 1000);
364 if (state->mode == MSP_MODE_AM_NICAM)
365 v4l_dbg(1, msp_debug, client, "NICAM/AM carrier : %d.%03d MHz\n",
366 state->second / 910000, (state->second / 910) % 1000);
367 if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
368 v4l_dbg(1, msp_debug, client, "FM-stereo carrier : %d.%03d MHz\n",
369 state->second / 910000, (state->second / 910) % 1000);
370 }
371 }
372
373 /* ----------------------------------------------------------------------- */
374
375 static int msp3400c_detect_stereo(struct i2c_client *client)
376 {
377 struct msp_state *state = i2c_get_clientdata(client);
378 int val;
379 int rxsubchans = state->rxsubchans;
380 int newnicam = state->nicam_on;
381 int update = 0;
382
383 switch (state->mode) {
384 case MSP_MODE_FM_TERRA:
385 val = msp_read_dsp(client, 0x18);
386 if (val > 32767)
387 val -= 65536;
388 v4l_dbg(2, msp_debug, client, "stereo detect register: %d\n", val);
389 if (val > 8192) {
390 rxsubchans = V4L2_TUNER_SUB_STEREO;
391 } else if (val < -4096) {
392 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
393 } else {
394 rxsubchans = V4L2_TUNER_SUB_MONO;
395 }
396 newnicam = 0;
397 break;
398 case MSP_MODE_FM_NICAM1:
399 case MSP_MODE_FM_NICAM2:
400 case MSP_MODE_AM_NICAM:
401 val = msp_read_dem(client, 0x23);
402 v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
403 val & 1, (val & 0x1e) >> 1);
404
405 if (val & 1) {
406 /* nicam synced */
407 switch ((val & 0x1e) >> 1) {
408 case 0:
409 case 8:
410 rxsubchans = V4L2_TUNER_SUB_STEREO;
411 break;
412 case 1:
413 case 9:
414 rxsubchans = V4L2_TUNER_SUB_MONO;
415 break;
416 case 2:
417 case 10:
418 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
419 break;
420 default:
421 rxsubchans = V4L2_TUNER_SUB_MONO;
422 break;
423 }
424 newnicam = 1;
425 } else {
426 newnicam = 0;
427 rxsubchans = V4L2_TUNER_SUB_MONO;
428 }
429 break;
430 }
431 if (rxsubchans != state->rxsubchans) {
432 update = 1;
433 v4l_dbg(1, msp_debug, client, "watch: rxsubchans %02x => %02x\n",
434 state->rxsubchans, rxsubchans);
435 state->rxsubchans = rxsubchans;
436 }
437 if (newnicam != state->nicam_on) {
438 update = 1;
439 v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n",
440 state->nicam_on, newnicam);
441 state->nicam_on = newnicam;
442 }
443 return update;
444 }
445
446 /*
447 * A kernel thread for msp3400 control -- we don't want to block the
448 * in the ioctl while doing the sound carrier & stereo detect
449 */
450 /* stereo/multilang monitoring */
451 static void watch_stereo(struct i2c_client *client)
452 {
453 struct msp_state *state = i2c_get_clientdata(client);
454
455 if (msp_detect_stereo(client)) {
456 msp_set_audmode(client);
457 }
458
459 if (msp_once)
460 state->watch_stereo = 0;
461 }
462
463 int msp3400c_thread(void *data)
464 {
465 struct i2c_client *client = data;
466 struct msp_state *state = i2c_get_clientdata(client);
467 struct msp3400c_carrier_detect *cd;
468 int count, max1, max2, val1, val2, val, this;
469
470
471 v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n");
472 set_freezable();
473 for (;;) {
474 v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n");
475 msp_sleep(state, -1);
476 v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n");
477
478 restart:
479 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
480 state->restart = 0;
481 if (kthread_should_stop())
482 break;
483
484 if (state->radio || MSP_MODE_EXTERN == state->mode) {
485 /* no carrier scan, just unmute */
486 v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
487 state->scan_in_progress = 0;
488 msp_set_audio(client);
489 continue;
490 }
491
492 /* mute audio */
493 state->scan_in_progress = 1;
494 msp_set_audio(client);
495
496 msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
497 val1 = val2 = 0;
498 max1 = max2 = -1;
499 state->watch_stereo = 0;
500 state->nicam_on = 0;
501
502 /* wait for tuner to settle down after a channel change */
503 if (msp_sleep(state, 200))
504 goto restart;
505
506 /* carrier detect pass #1 -- main carrier */
507 cd = msp3400c_carrier_detect_main;
508 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
509
510 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
511 /* autodetect doesn't work well with AM ... */
512 max1 = 3;
513 count = 0;
514 v4l_dbg(1, msp_debug, client, "AM sound override\n");
515 }
516
517 for (this = 0; this < count; this++) {
518 msp3400c_set_carrier(client, cd[this].cdo, cd[this].cdo);
519 if (msp_sleep(state,100))
520 goto restart;
521 val = msp_read_dsp(client, 0x1b);
522 if (val > 32767)
523 val -= 65536;
524 if (val1 < val)
525 val1 = val, max1 = this;
526 v4l_dbg(1, msp_debug, client, "carrier1 val: %5d / %s\n", val,cd[this].name);
527 }
528
529 /* carrier detect pass #2 -- second (stereo) carrier */
530 switch (max1) {
531 case 1: /* 5.5 */
532 cd = msp3400c_carrier_detect_55;
533 count = ARRAY_SIZE(msp3400c_carrier_detect_55);
534 break;
535 case 3: /* 6.5 */
536 cd = msp3400c_carrier_detect_65;
537 count = ARRAY_SIZE(msp3400c_carrier_detect_65);
538 break;
539 case 0: /* 4.5 */
540 case 2: /* 6.0 */
541 default:
542 cd = NULL;
543 count = 0;
544 break;
545 }
546
547 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
548 /* autodetect doesn't work well with AM ... */
549 cd = NULL;
550 count = 0;
551 max2 = 0;
552 }
553 for (this = 0; this < count; this++) {
554 msp3400c_set_carrier(client, cd[this].cdo, cd[this].cdo);
555 if (msp_sleep(state,100))
556 goto restart;
557 val = msp_read_dsp(client, 0x1b);
558 if (val > 32767)
559 val -= 65536;
560 if (val2 < val)
561 val2 = val, max2 = this;
562 v4l_dbg(1, msp_debug, client, "carrier2 val: %5d / %s\n", val,cd[this].name);
563 }
564
565 /* program the msp3400 according to the results */
566 state->main = msp3400c_carrier_detect_main[max1].cdo;
567 switch (max1) {
568 case 1: /* 5.5 */
569 if (max2 == 0) {
570 /* B/G FM-stereo */
571 state->second = msp3400c_carrier_detect_55[max2].cdo;
572 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
573 state->watch_stereo = 1;
574 } else if (max2 == 1 && state->has_nicam) {
575 /* B/G NICAM */
576 state->second = msp3400c_carrier_detect_55[max2].cdo;
577 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
578 state->nicam_on = 1;
579 state->watch_stereo = 1;
580 } else {
581 goto no_second;
582 }
583 break;
584 case 2: /* 6.0 */
585 /* PAL I NICAM */
586 state->second = MSP_CARRIER(6.552);
587 msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
588 state->nicam_on = 1;
589 state->watch_stereo = 1;
590 break;
591 case 3: /* 6.5 */
592 if (max2 == 1 || max2 == 2) {
593 /* D/K FM-stereo */
594 state->second = msp3400c_carrier_detect_65[max2].cdo;
595 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
596 state->watch_stereo = 1;
597 } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
598 /* L NICAM or AM-mono */
599 state->second = msp3400c_carrier_detect_65[max2].cdo;
600 msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
601 state->watch_stereo = 1;
602 } else if (max2 == 0 && state->has_nicam) {
603 /* D/K NICAM */
604 state->second = msp3400c_carrier_detect_65[max2].cdo;
605 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
606 state->nicam_on = 1;
607 state->watch_stereo = 1;
608 } else {
609 goto no_second;
610 }
611 break;
612 case 0: /* 4.5 */
613 default:
614 no_second:
615 state->second = msp3400c_carrier_detect_main[max1].cdo;
616 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
617 break;
618 }
619 msp3400c_set_carrier(client, state->second, state->main);
620
621 /* unmute */
622 state->scan_in_progress = 0;
623 msp3400c_set_audmode(client);
624 msp_set_audio(client);
625
626 if (msp_debug)
627 msp3400c_print_mode(client);
628
629 /* monitor tv audio mode, the first time don't wait
630 so long to get a quick stereo/bilingual result */
631 count = 3;
632 while (state->watch_stereo) {
633 if (msp_sleep(state, count ? 1000 : 5000))
634 goto restart;
635 if (count) count--;
636 watch_stereo(client);
637 }
638 }
639 v4l_dbg(1, msp_debug, client, "thread: exit\n");
640 return 0;
641 }
642
643
644 int msp3410d_thread(void *data)
645 {
646 struct i2c_client *client = data;
647 struct msp_state *state = i2c_get_clientdata(client);
648 int val, i, std, count;
649
650 v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n");
651 set_freezable();
652 for (;;) {
653 v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n");
654 msp_sleep(state,-1);
655 v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n");
656
657 restart:
658 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
659 state->restart = 0;
660 if (kthread_should_stop())
661 break;
662
663 if (state->mode == MSP_MODE_EXTERN) {
664 /* no carrier scan needed, just unmute */
665 v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
666 state->scan_in_progress = 0;
667 msp_set_audio(client);
668 continue;
669 }
670
671 /* mute audio */
672 state->scan_in_progress = 1;
673 msp_set_audio(client);
674
675 /* start autodetect. Note: autodetect is not supported for
676 NTSC-M and radio, hence we force the standard in those cases. */
677 if (state->radio)
678 std = 0x40;
679 else
680 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
681 state->watch_stereo = 0;
682 state->nicam_on = 0;
683
684 /* wait for tuner to settle down after a channel change */
685 if (msp_sleep(state, 200))
686 goto restart;
687
688 if (msp_debug)
689 v4l_dbg(2, msp_debug, client, "setting standard: %s (0x%04x)\n",
690 msp_standard_std_name(std), std);
691
692 if (std != 1) {
693 /* programmed some specific mode */
694 val = std;
695 } else {
696 /* triggered autodetect */
697 msp_write_dem(client, 0x20, std);
698 for (;;) {
699 if (msp_sleep(state, 100))
700 goto restart;
701
702 /* check results */
703 val = msp_read_dem(client, 0x7e);
704 if (val < 0x07ff)
705 break;
706 v4l_dbg(2, msp_debug, client, "detection still in progress\n");
707 }
708 }
709 for (i = 0; msp_stdlist[i].name != NULL; i++)
710 if (msp_stdlist[i].retval == val)
711 break;
712 v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n",
713 msp_standard_std_name(val), val);
714 state->main = msp_stdlist[i].main;
715 state->second = msp_stdlist[i].second;
716 state->std = val;
717 state->rxsubchans = V4L2_TUNER_SUB_MONO;
718
719 if (msp_amsound && !state->radio && (state->v4l2_std & V4L2_STD_SECAM) &&
720 (val != 0x0009)) {
721 /* autodetection has failed, let backup */
722 v4l_dbg(1, msp_debug, client, "autodetection failed,"
723 " switching to backup standard: %s (0x%04x)\n",
724 msp_stdlist[8].name ? msp_stdlist[8].name : "unknown",val);
725 state->std = val = 0x0009;
726 msp_write_dem(client, 0x20, val);
727 }
728
729 /* set stereo */
730 switch (val) {
731 case 0x0008: /* B/G NICAM */
732 case 0x000a: /* I NICAM */
733 case 0x000b: /* D/K NICAM */
734 if (val == 0x000a)
735 state->mode = MSP_MODE_FM_NICAM2;
736 else
737 state->mode = MSP_MODE_FM_NICAM1;
738 /* just turn on stereo */
739 state->nicam_on = 1;
740 state->watch_stereo = 1;
741 break;
742 case 0x0009:
743 state->mode = MSP_MODE_AM_NICAM;
744 state->nicam_on = 1;
745 state->watch_stereo = 1;
746 break;
747 case 0x0020: /* BTSC */
748 /* The pre-'G' models only have BTSC-mono */
749 state->mode = MSP_MODE_BTSC;
750 break;
751 case 0x0040: /* FM radio */
752 state->mode = MSP_MODE_FM_RADIO;
753 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
754 /* not needed in theory if we have radio, but
755 short programming enables carrier mute */
756 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
757 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
758 MSP_CARRIER(10.7));
759 break;
760 case 0x0002:
761 case 0x0003:
762 case 0x0004:
763 case 0x0005:
764 state->mode = MSP_MODE_FM_TERRA;
765 state->watch_stereo = 1;
766 break;
767 }
768
769 /* set various prescales */
770 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
771 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
772 if (state->has_nicam)
773 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
774
775 if (state->has_i2s_conf)
776 msp_write_dem(client, 0x40, state->i2s_mode);
777
778 /* unmute */
779 msp3400c_set_audmode(client);
780 state->scan_in_progress = 0;
781 msp_set_audio(client);
782
783 /* monitor tv audio mode, the first time don't wait
784 so long to get a quick stereo/bilingual result */
785 count = 3;
786 while (state->watch_stereo) {
787 if (msp_sleep(state, count ? 1000 : 5000))
788 goto restart;
789 if (count) count--;
790 watch_stereo(client);
791 }
792 }
793 v4l_dbg(1, msp_debug, client, "thread: exit\n");
794 return 0;
795 }
796
797 /* ----------------------------------------------------------------------- */
798
799 /* msp34xxG + (autoselect no-thread)
800 * this one uses both automatic standard detection and automatic sound
801 * select which are available in the newer G versions
802 * struct msp: only norm, acb and source are really used in this mode
803 */
804
805 static int msp34xxg_modus(struct i2c_client *client)
806 {
807 struct msp_state *state = i2c_get_clientdata(client);
808
809 if (state->radio) {
810 v4l_dbg(1, msp_debug, client, "selected radio modus\n");
811 return 0x0001;
812 }
813
814 if (state->v4l2_std & V4L2_STD_PAL) {
815 v4l_dbg(1, msp_debug, client, "selected PAL modus\n");
816 return 0x7001;
817 }
818 if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
819 v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n");
820 return 0x4001;
821 }
822 if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
823 v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n");
824 return 0x0001;
825 }
826 if (state->v4l2_std & V4L2_STD_MN) {
827 v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n");
828 return 0x2001;
829 }
830 if (state->v4l2_std & V4L2_STD_SECAM) {
831 v4l_dbg(1, msp_debug, client, "selected SECAM modus\n");
832 return 0x6001;
833 }
834 return 0x0001;
835 }
836
837 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
838 {
839 struct msp_state *state = i2c_get_clientdata(client);
840 int source, matrix;
841
842 switch (state->audmode) {
843 case V4L2_TUNER_MODE_MONO:
844 source = 0; /* mono only */
845 matrix = 0x30;
846 break;
847 case V4L2_TUNER_MODE_LANG2:
848 source = 4; /* stereo or B */
849 matrix = 0x10;
850 break;
851 case V4L2_TUNER_MODE_LANG1_LANG2:
852 source = 1; /* stereo or A|B */
853 matrix = 0x20;
854 break;
855 case V4L2_TUNER_MODE_LANG1:
856 source = 3; /* stereo or A */
857 matrix = 0x00;
858 break;
859 case V4L2_TUNER_MODE_STEREO:
860 default:
861 source = 3; /* stereo or A */
862 matrix = 0x20;
863 break;
864 }
865
866 if (in == MSP_DSP_IN_TUNER)
867 source = (source << 8) | 0x20;
868 /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
869 instead of 11, 12, 13. So we add one for that msp version. */
870 else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
871 source = ((in + 1) << 8) | matrix;
872 else
873 source = (in << 8) | matrix;
874
875 v4l_dbg(1, msp_debug, client, "set source to %d (0x%x) for output %02x\n",
876 in, source, reg);
877 msp_write_dsp(client, reg, source);
878 }
879
880 static void msp34xxg_set_sources(struct i2c_client *client)
881 {
882 struct msp_state *state = i2c_get_clientdata(client);
883 u32 in = state->routing.input;
884
885 msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
886 /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
887 msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
888 msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
889 msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
890 if (state->has_scart2_out)
891 msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
892 msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
893 }
894
895 /* (re-)initialize the msp34xxg */
896 static void msp34xxg_reset(struct i2c_client *client)
897 {
898 struct msp_state *state = i2c_get_clientdata(client);
899 int tuner = (state->routing.input >> 3) & 1;
900 int modus;
901
902 /* initialize std to 1 (autodetect) to signal that no standard is
903 selected yet. */
904 state->std = 1;
905
906 msp_reset(client);
907
908 if (state->has_i2s_conf)
909 msp_write_dem(client, 0x40, state->i2s_mode);
910
911 /* step-by-step initialisation, as described in the manual */
912 modus = msp34xxg_modus(client);
913 modus |= tuner ? 0x100 : 0;
914 msp_write_dem(client, 0x30, modus);
915
916 /* write the dsps that may have an influence on
917 standard/audio autodetection right now */
918 msp34xxg_set_sources(client);
919
920 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
921 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
922 if (state->has_nicam)
923 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
924
925 /* set identification threshold. Personally, I
926 * I set it to a higher value than the default
927 * of 0x190 to ignore noisy stereo signals.
928 * this needs tuning. (recommended range 0x00a0-0x03c0)
929 * 0x7f0 = forced mono mode
930 *
931 * a2 threshold for stereo/bilingual.
932 * Note: this register is part of the Manual/Compatibility mode.
933 * It is supported by all 'G'-family chips.
934 */
935 msp_write_dem(client, 0x22, msp_stereo_thresh);
936 }
937
938 int msp34xxg_thread(void *data)
939 {
940 struct i2c_client *client = data;
941 struct msp_state *state = i2c_get_clientdata(client);
942 int val, i;
943
944 v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n");
945 set_freezable();
946 for (;;) {
947 v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n");
948 msp_sleep(state, -1);
949 v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n");
950
951 restart:
952 v4l_dbg(1, msp_debug, client, "thread: restart scan\n");
953 state->restart = 0;
954 if (kthread_should_stop())
955 break;
956
957 if (state->mode == MSP_MODE_EXTERN) {
958 /* no carrier scan needed, just unmute */
959 v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
960 state->scan_in_progress = 0;
961 msp_set_audio(client);
962 continue;
963 }
964
965 /* setup the chip*/
966 msp34xxg_reset(client);
967 state->std = state->radio ? 0x40 :
968 (state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
969 msp_write_dem(client, 0x20, state->std);
970 /* start autodetect */
971 if (state->std != 1)
972 goto unmute;
973
974 /* watch autodetect */
975 v4l_dbg(1, msp_debug, client, "started autodetect, waiting for result\n");
976 for (i = 0; i < 10; i++) {
977 if (msp_sleep(state, 100))
978 goto restart;
979
980 /* check results */
981 val = msp_read_dem(client, 0x7e);
982 if (val < 0x07ff) {
983 state->std = val;
984 break;
985 }
986 v4l_dbg(2, msp_debug, client, "detection still in progress\n");
987 }
988 if (state->std == 1) {
989 v4l_dbg(1, msp_debug, client, "detection still in progress after 10 tries. giving up.\n");
990 continue;
991 }
992
993 unmute:
994 v4l_dbg(1, msp_debug, client, "detected standard: %s (0x%04x)\n",
995 msp_standard_std_name(state->std), state->std);
996
997 if (state->std == 9) {
998 /* AM NICAM mode */
999 msp_write_dsp(client, 0x0e, 0x7c00);
1000 }
1001
1002 /* unmute: dispatch sound to scart output, set scart volume */
1003 msp_set_audio(client);
1004
1005 /* restore ACB */
1006 if (msp_write_dsp(client, 0x13, state->acb))
1007 return -1;
1008
1009 /* the periodic stereo/SAP check is only relevant for
1010 the 0x20 standard (BTSC) */
1011 if (state->std != 0x20)
1012 continue;
1013
1014 state->watch_stereo = 1;
1015
1016 /* monitor tv audio mode, the first time don't wait
1017 in order to get a quick stereo/SAP update */
1018 watch_stereo(client);
1019 while (state->watch_stereo) {
1020 watch_stereo(client);
1021 if (msp_sleep(state, 5000))
1022 goto restart;
1023 }
1024 }
1025 v4l_dbg(1, msp_debug, client, "thread: exit\n");
1026 return 0;
1027 }
1028
1029 static int msp34xxg_detect_stereo(struct i2c_client *client)
1030 {
1031 struct msp_state *state = i2c_get_clientdata(client);
1032 int status = msp_read_dem(client, 0x0200);
1033 int is_bilingual = status & 0x100;
1034 int is_stereo = status & 0x40;
1035 int oldrx = state->rxsubchans;
1036
1037 if (state->mode == MSP_MODE_EXTERN)
1038 return 0;
1039
1040 state->rxsubchans = 0;
1041 if (is_stereo)
1042 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1043 else
1044 state->rxsubchans = V4L2_TUNER_SUB_MONO;
1045 if (is_bilingual) {
1046 if (state->std == 0x20)
1047 state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1048 else
1049 state->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1050 }
1051 v4l_dbg(1, msp_debug, client, "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1052 status, is_stereo, is_bilingual, state->rxsubchans);
1053 return (oldrx != state->rxsubchans);
1054 }
1055
1056 static void msp34xxg_set_audmode(struct i2c_client *client)
1057 {
1058 struct msp_state *state = i2c_get_clientdata(client);
1059
1060 if (state->std == 0x20) {
1061 if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1062 (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1063 state->audmode == V4L2_TUNER_MODE_LANG2)) {
1064 msp_write_dem(client, 0x20, 0x21);
1065 } else {
1066 msp_write_dem(client, 0x20, 0x20);
1067 }
1068 }
1069
1070 msp34xxg_set_sources(client);
1071 }
1072
1073 void msp_set_audmode(struct i2c_client *client)
1074 {
1075 struct msp_state *state = i2c_get_clientdata(client);
1076
1077 switch (state->opmode) {
1078 case OPMODE_MANUAL:
1079 case OPMODE_AUTODETECT:
1080 msp3400c_set_audmode(client);
1081 break;
1082 case OPMODE_AUTOSELECT:
1083 msp34xxg_set_audmode(client);
1084 break;
1085 }
1086 }
1087
1088 int msp_detect_stereo(struct i2c_client *client)
1089 {
1090 struct msp_state *state = i2c_get_clientdata(client);
1091
1092 switch (state->opmode) {
1093 case OPMODE_MANUAL:
1094 case OPMODE_AUTODETECT:
1095 return msp3400c_detect_stereo(client);
1096 case OPMODE_AUTOSELECT:
1097 return msp34xxg_detect_stereo(client);
1098 }
1099 return 0;
1100 }
1101
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