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-rw-r--r--drivers/media/video/msp3400-kthreads.c1010
1 files changed, 1010 insertions, 0 deletions
diff --git a/drivers/media/video/msp3400-kthreads.c b/drivers/media/video/msp3400-kthreads.c
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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/videodev.h>
27#include <linux/videodev2.h>
28#include <media/v4l2-common.h>
29#include <media/audiochip.h>
30#include <linux/kthread.h>
31#include <linux/suspend.h>
32#include "msp3400.h"
33
34/* this one uses the automatic sound standard detection of newer msp34xx
35 chip versions */
36static struct {
37 int retval;
38 int main, second;
39 char *name;
40} msp_stdlist[] = {
41 { 0x0000, 0, 0, "could not detect sound standard" },
42 { 0x0001, 0, 0, "autodetect start" },
43 { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72), "4.5/4.72 M Dual FM-Stereo" },
44 { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875), "5.5/5.74 B/G Dual FM-Stereo" },
45 { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125), "6.5/6.25 D/K1 Dual FM-Stereo" },
46 { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875), "6.5/6.74 D/K2 Dual FM-Stereo" },
47 { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 D/K FM-Mono (HDEV3)" },
48 { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85), "5.5/5.85 B/G NICAM FM" },
49 { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 L NICAM AM" },
50 { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55), "6.0/6.55 I NICAM FM" },
51 { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM" },
52 { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV2)" },
53 { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Stereo" },
54 { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Mono + SAP" },
55 { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M EIA-J Japan Stereo" },
56 { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7), "10.7 FM-Stereo Radio" },
57 { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 SAT-Mono" },
58 { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20), "7.02/7.20 SAT-Stereo" },
59 { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2), "7.2 SAT ADR" },
60 { -1, 0, 0, NULL }, /* EOF */
61};
62
63static struct msp3400c_init_data_dem {
64 int fir1[6];
65 int fir2[6];
66 int cdo1;
67 int cdo2;
68 int ad_cv;
69 int mode_reg;
70 int dsp_src;
71 int dsp_matrix;
72} msp3400c_init_data[] = {
73 { /* AM (for carrier detect / msp3400) */
74 {75, 19, 36, 35, 39, 40},
75 {75, 19, 36, 35, 39, 40},
76 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
77 0x00d0, 0x0500, 0x0020, 0x3000
78 },{ /* AM (for carrier detect / msp3410) */
79 {-1, -1, -8, 2, 59, 126},
80 {-1, -1, -8, 2, 59, 126},
81 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
82 0x00d0, 0x0100, 0x0020, 0x3000
83 },{ /* FM Radio */
84 {-8, -8, 4, 6, 78, 107},
85 {-8, -8, 4, 6, 78, 107},
86 MSP_CARRIER(10.7), MSP_CARRIER(10.7),
87 0x00d0, 0x0480, 0x0020, 0x3000
88 },{ /* Terrestial FM-mono + FM-stereo */
89 {3, 18, 27, 48, 66, 72},
90 {3, 18, 27, 48, 66, 72},
91 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
92 0x00d0, 0x0480, 0x0030, 0x3000
93 },{ /* Sat FM-mono */
94 { 1, 9, 14, 24, 33, 37},
95 { 3, 18, 27, 48, 66, 72},
96 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
97 0x00c6, 0x0480, 0x0000, 0x3000
98 },{ /* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */
99 {-2, -8, -10, 10, 50, 86},
100 {3, 18, 27, 48, 66, 72},
101 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
102 0x00d0, 0x0040, 0x0120, 0x3000
103 },{ /* NICAM/FM -- I (6.0/6.552) */
104 {2, 4, -6, -4, 40, 94},
105 {3, 18, 27, 48, 66, 72},
106 MSP_CARRIER(6.0), MSP_CARRIER(6.0),
107 0x00d0, 0x0040, 0x0120, 0x3000
108 },{ /* NICAM/AM -- L (6.5/5.85) */
109 {-2, -8, -10, 10, 50, 86},
110 {-4, -12, -9, 23, 79, 126},
111 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
112 0x00c6, 0x0140, 0x0120, 0x7c03
113 },
114};
115
116struct msp3400c_carrier_detect {
117 int cdo;
118 char *name;
119};
120
121static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
122 /* main carrier */
123 { MSP_CARRIER(4.5), "4.5 NTSC" },
124 { MSP_CARRIER(5.5), "5.5 PAL B/G" },
125 { MSP_CARRIER(6.0), "6.0 PAL I" },
126 { MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" }
127};
128
129static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
130 /* PAL B/G */
131 { MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
132 { MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
133};
134
135static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
136 /* PAL SAT / SECAM */
137 { MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" },
138 { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
139 { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
140 { MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
141 { MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
142 { MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
143};
144
145/* ------------------------------------------------------------------------ */
146
147const char *msp_standard_std_name(int std)
148{
149 int i;
150
151 for (i = 0; msp_stdlist[i].name != NULL; i++)
152 if (msp_stdlist[i].retval == std)
153 return msp_stdlist[i].name;
154 return "unknown";
155}
156
157void msp3400c_setcarrier(struct i2c_client *client, int cdo1, int cdo2)
158{
159 msp_write_dem(client, 0x0093, cdo1 & 0xfff);
160 msp_write_dem(client, 0x009b, cdo1 >> 12);
161 msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
162 msp_write_dem(client, 0x00ab, cdo2 >> 12);
163 msp_write_dem(client, 0x0056, 0); /*LOAD_REG_1/2*/
164}
165
166void msp3400c_setmode(struct i2c_client *client, int type)
167{
168 struct msp_state *state = i2c_get_clientdata(client);
169 int i;
170
171 v4l_dbg(1, client, "setmode: %d\n", type);
172 state->mode = type;
173 state->audmode = V4L2_TUNER_MODE_MONO;
174 state->rxsubchans = V4L2_TUNER_SUB_MONO;
175
176 msp_write_dem(client, 0x00bb, msp3400c_init_data[type].ad_cv);
177
178 for (i = 5; i >= 0; i--) /* fir 1 */
179 msp_write_dem(client, 0x0001, msp3400c_init_data[type].fir1[i]);
180
181 msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
182 msp_write_dem(client, 0x0005, 0x0040);
183 msp_write_dem(client, 0x0005, 0x0000);
184 for (i = 5; i >= 0; i--)
185 msp_write_dem(client, 0x0005, msp3400c_init_data[type].fir2[i]);
186
187 msp_write_dem(client, 0x0083, msp3400c_init_data[type].mode_reg);
188
189 msp3400c_setcarrier(client, msp3400c_init_data[type].cdo1,
190 msp3400c_init_data[type].cdo2);
191
192 msp_write_dem(client, 0x0056, 0); /*LOAD_REG_1/2*/
193
194 if (dolby) {
195 msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
196 msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
197 msp_write_dsp(client, 0x000b, msp3400c_init_data[type].dsp_src);
198 } else {
199 msp_write_dsp(client, 0x0008, msp3400c_init_data[type].dsp_src);
200 msp_write_dsp(client, 0x0009, msp3400c_init_data[type].dsp_src);
201 msp_write_dsp(client, 0x000b, msp3400c_init_data[type].dsp_src);
202 }
203 msp_write_dsp(client, 0x000a, msp3400c_init_data[type].dsp_src);
204 msp_write_dsp(client, 0x000e, msp3400c_init_data[type].dsp_matrix);
205
206 if (state->has_nicam) {
207 /* nicam prescale */
208 msp_write_dsp(client, 0x0010, 0x5a00); /* was: 0x3000 */
209 }
210}
211
212/* turn on/off nicam + stereo */
213void msp3400c_setstereo(struct i2c_client *client, int mode)
214{
215 static char *strmode[] = { "mono", "stereo", "lang2", "lang1" };
216 struct msp_state *state = i2c_get_clientdata(client);
217 int nicam = 0; /* channel source: FM/AM or nicam */
218 int src = 0;
219
220 if (state->opmode == OPMODE_AUTOSELECT) {
221 /* this method would break everything, let's make sure
222 * it's never called
223 */
224 v4l_dbg(1, client, "setstereo called with mode=%d instead of set_source (ignored)\n",
225 mode);
226 return;
227 }
228
229 /* switch demodulator */
230 switch (state->mode) {
231 case MSP_MODE_FM_TERRA:
232 v4l_dbg(1, client, "FM setstereo: %s\n", strmode[mode]);
233 msp3400c_setcarrier(client, state->second, state->main);
234 switch (mode) {
235 case V4L2_TUNER_MODE_STEREO:
236 msp_write_dsp(client, 0x000e, 0x3001);
237 break;
238 case V4L2_TUNER_MODE_MONO:
239 case V4L2_TUNER_MODE_LANG1:
240 case V4L2_TUNER_MODE_LANG2:
241 msp_write_dsp(client, 0x000e, 0x3000);
242 break;
243 }
244 break;
245 case MSP_MODE_FM_SAT:
246 v4l_dbg(1, client, "SAT setstereo: %s\n", strmode[mode]);
247 switch (mode) {
248 case V4L2_TUNER_MODE_MONO:
249 msp3400c_setcarrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
250 break;
251 case V4L2_TUNER_MODE_STEREO:
252 msp3400c_setcarrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
253 break;
254 case V4L2_TUNER_MODE_LANG1:
255 msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
256 break;
257 case V4L2_TUNER_MODE_LANG2:
258 msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
259 break;
260 }
261 break;
262 case MSP_MODE_FM_NICAM1:
263 case MSP_MODE_FM_NICAM2:
264 case MSP_MODE_AM_NICAM:
265 v4l_dbg(1, client, "NICAM setstereo: %s\n",strmode[mode]);
266 msp3400c_setcarrier(client,state->second,state->main);
267 if (state->nicam_on)
268 nicam=0x0100;
269 break;
270 case MSP_MODE_BTSC:
271 v4l_dbg(1, client, "BTSC setstereo: %s\n",strmode[mode]);
272 nicam=0x0300;
273 break;
274 case MSP_MODE_EXTERN:
275 v4l_dbg(1, client, "extern setstereo: %s\n",strmode[mode]);
276 nicam = 0x0200;
277 break;
278 case MSP_MODE_FM_RADIO:
279 v4l_dbg(1, client, "FM-Radio setstereo: %s\n",strmode[mode]);
280 break;
281 default:
282 v4l_dbg(1, client, "mono setstereo\n");
283 return;
284 }
285
286 /* switch audio */
287 switch (mode) {
288 case V4L2_TUNER_MODE_STEREO:
289 src = 0x0020 | nicam;
290 break;
291 case V4L2_TUNER_MODE_MONO:
292 if (state->mode == MSP_MODE_AM_NICAM) {
293 v4l_dbg(1, client, "switching to AM mono\n");
294 /* AM mono decoding is handled by tuner, not MSP chip */
295 /* SCART switching control register */
296 msp_set_scart(client, SCART_MONO, 0);
297 src = 0x0200;
298 break;
299 }
300 case V4L2_TUNER_MODE_LANG1:
301 src = 0x0000 | nicam;
302 break;
303 case V4L2_TUNER_MODE_LANG2:
304 src = 0x0010 | nicam;
305 break;
306 }
307 v4l_dbg(1, client, "setstereo final source/matrix = 0x%x\n", src);
308
309 if (dolby) {
310 msp_write_dsp(client, 0x0008, 0x0520);
311 msp_write_dsp(client, 0x0009, 0x0620);
312 msp_write_dsp(client, 0x000a, src);
313 msp_write_dsp(client, 0x000b, src);
314 } else {
315 msp_write_dsp(client, 0x0008, src);
316 msp_write_dsp(client, 0x0009, src);
317 msp_write_dsp(client, 0x000a, src);
318 msp_write_dsp(client, 0x000b, src);
319 msp_write_dsp(client, 0x000c, src);
320 if (state->has_scart23_in_scart2_out)
321 msp_write_dsp(client, 0x0041, src);
322 }
323}
324
325static void msp3400c_print_mode(struct i2c_client *client)
326{
327 struct msp_state *state = i2c_get_clientdata(client);
328
329 if (state->main == state->second) {
330 v4l_dbg(1, client, "mono sound carrier: %d.%03d MHz\n",
331 state->main / 910000, (state->main / 910) % 1000);
332 } else {
333 v4l_dbg(1, client, "main sound carrier: %d.%03d MHz\n",
334 state->main / 910000, (state->main / 910) % 1000);
335 }
336 if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
337 v4l_dbg(1, client, "NICAM/FM carrier : %d.%03d MHz\n",
338 state->second / 910000, (state->second/910) % 1000);
339 if (state->mode == MSP_MODE_AM_NICAM)
340 v4l_dbg(1, client, "NICAM/AM carrier : %d.%03d MHz\n",
341 state->second / 910000, (state->second / 910) % 1000);
342 if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
343 v4l_dbg(1, client, "FM-stereo carrier : %d.%03d MHz\n",
344 state->second / 910000, (state->second / 910) % 1000);
345 }
346}
347
348/* ----------------------------------------------------------------------- */
349
350int autodetect_stereo(struct i2c_client *client)
351{
352 struct msp_state *state = i2c_get_clientdata(client);
353 int val;
354 int rxsubchans = state->rxsubchans;
355 int newnicam = state->nicam_on;
356 int update = 0;
357
358 switch (state->mode) {
359 case MSP_MODE_FM_TERRA:
360 val = msp_read_dsp(client, 0x18);
361 if (val > 32767)
362 val -= 65536;
363 v4l_dbg(2, client, "stereo detect register: %d\n", val);
364 if (val > 4096) {
365 rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
366 } else if (val < -4096) {
367 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
368 } else {
369 rxsubchans = V4L2_TUNER_SUB_MONO;
370 }
371 newnicam = 0;
372 break;
373 case MSP_MODE_FM_NICAM1:
374 case MSP_MODE_FM_NICAM2:
375 case MSP_MODE_AM_NICAM:
376 val = msp_read_dem(client, 0x23);
377 v4l_dbg(2, client, "nicam sync=%d, mode=%d\n",
378 val & 1, (val & 0x1e) >> 1);
379
380 if (val & 1) {
381 /* nicam synced */
382 switch ((val & 0x1e) >> 1) {
383 case 0:
384 case 8:
385 rxsubchans = V4L2_TUNER_SUB_STEREO;
386 break;
387 case 1:
388 case 9:
389 rxsubchans = V4L2_TUNER_SUB_MONO
390 | V4L2_TUNER_SUB_LANG1;
391 break;
392 case 2:
393 case 10:
394 rxsubchans = V4L2_TUNER_SUB_MONO
395 | V4L2_TUNER_SUB_LANG1
396 | V4L2_TUNER_SUB_LANG2;
397 break;
398 default:
399 rxsubchans = V4L2_TUNER_SUB_MONO;
400 break;
401 }
402 newnicam = 1;
403 } else {
404 newnicam = 0;
405 rxsubchans = V4L2_TUNER_SUB_MONO;
406 }
407 break;
408 case MSP_MODE_BTSC:
409 val = msp_read_dem(client, 0x200);
410 v4l_dbg(2, client, "status=0x%x (pri=%s, sec=%s, %s%s%s)\n",
411 val,
412 (val & 0x0002) ? "no" : "yes",
413 (val & 0x0004) ? "no" : "yes",
414 (val & 0x0040) ? "stereo" : "mono",
415 (val & 0x0080) ? ", nicam 2nd mono" : "",
416 (val & 0x0100) ? ", bilingual/SAP" : "");
417 rxsubchans = V4L2_TUNER_SUB_MONO;
418 if (val & 0x0040) rxsubchans |= V4L2_TUNER_SUB_STEREO;
419 if (val & 0x0100) rxsubchans |= V4L2_TUNER_SUB_LANG1;
420 break;
421 }
422 if (rxsubchans != state->rxsubchans) {
423 update = 1;
424 v4l_dbg(1, client, "watch: rxsubchans %d => %d\n",
425 state->rxsubchans,rxsubchans);
426 state->rxsubchans = rxsubchans;
427 }
428 if (newnicam != state->nicam_on) {
429 update = 1;
430 v4l_dbg(1, client, "watch: nicam %d => %d\n",
431 state->nicam_on,newnicam);
432 state->nicam_on = newnicam;
433 }
434 return update;
435}
436
437/*
438 * A kernel thread for msp3400 control -- we don't want to block the
439 * in the ioctl while doing the sound carrier & stereo detect
440 */
441/* stereo/multilang monitoring */
442static void watch_stereo(struct i2c_client *client)
443{
444 struct msp_state *state = i2c_get_clientdata(client);
445
446 if (autodetect_stereo(client)) {
447 if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
448 msp3400c_setstereo(client, V4L2_TUNER_MODE_STEREO);
449 else if (state->rxsubchans & V4L2_TUNER_SUB_LANG1)
450 msp3400c_setstereo(client, V4L2_TUNER_MODE_LANG1);
451 else
452 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
453 }
454
455 if (once)
456 state->watch_stereo = 0;
457}
458
459int msp3400c_thread(void *data)
460{
461 struct i2c_client *client = data;
462 struct msp_state *state = i2c_get_clientdata(client);
463 struct msp3400c_carrier_detect *cd;
464 int count, max1,max2,val1,val2, val,this;
465
466
467 v4l_dbg(1, client, "msp3400 daemon started\n");
468 for (;;) {
469 v4l_dbg(2, client, "msp3400 thread: sleep\n");
470 msp_sleep(state, -1);
471 v4l_dbg(2, client, "msp3400 thread: wakeup\n");
472
473 restart:
474 v4l_dbg(1, client, "thread: restart scan\n");
475 state->restart = 0;
476 if (kthread_should_stop())
477 break;
478
479 if (state->radio || MSP_MODE_EXTERN == state->mode) {
480 /* no carrier scan, just unmute */
481 v4l_dbg(1, client, "thread: no carrier scan\n");
482 msp_set_audio(client);
483 continue;
484 }
485
486 /* mute */
487 msp_set_mute(client);
488 msp3400c_setmode(client, MSP_MODE_AM_DETECT /* +1 */ );
489 val1 = val2 = 0;
490 max1 = max2 = -1;
491 state->watch_stereo = 0;
492
493 /* some time for the tuner to sync */
494 if (msp_sleep(state,200))
495 goto restart;
496
497 /* carrier detect pass #1 -- main carrier */
498 cd = msp3400c_carrier_detect_main;
499 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
500
501 if (amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
502 /* autodetect doesn't work well with AM ... */
503 max1 = 3;
504 count = 0;
505 v4l_dbg(1, client, "AM sound override\n");
506 }
507
508 for (this = 0; this < count; this++) {
509 msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
510 if (msp_sleep(state,100))
511 goto restart;
512 val = msp_read_dsp(client, 0x1b);
513 if (val > 32767)
514 val -= 65536;
515 if (val1 < val)
516 val1 = val, max1 = this;
517 v4l_dbg(1, client, "carrier1 val: %5d / %s\n", val,cd[this].name);
518 }
519
520 /* carrier detect pass #2 -- second (stereo) carrier */
521 switch (max1) {
522 case 1: /* 5.5 */
523 cd = msp3400c_carrier_detect_55;
524 count = ARRAY_SIZE(msp3400c_carrier_detect_55);
525 break;
526 case 3: /* 6.5 */
527 cd = msp3400c_carrier_detect_65;
528 count = ARRAY_SIZE(msp3400c_carrier_detect_65);
529 break;
530 case 0: /* 4.5 */
531 case 2: /* 6.0 */
532 default:
533 cd = NULL;
534 count = 0;
535 break;
536 }
537
538 if (amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
539 /* autodetect doesn't work well with AM ... */
540 cd = NULL;
541 count = 0;
542 max2 = 0;
543 }
544 for (this = 0; this < count; this++) {
545 msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
546 if (msp_sleep(state,100))
547 goto restart;
548 val = msp_read_dsp(client, 0x1b);
549 if (val > 32767)
550 val -= 65536;
551 if (val2 < val)
552 val2 = val, max2 = this;
553 v4l_dbg(1, client, "carrier2 val: %5d / %s\n", val,cd[this].name);
554 }
555
556 /* program the msp3400 according to the results */
557 state->main = msp3400c_carrier_detect_main[max1].cdo;
558 switch (max1) {
559 case 1: /* 5.5 */
560 if (max2 == 0) {
561 /* B/G FM-stereo */
562 state->second = msp3400c_carrier_detect_55[max2].cdo;
563 msp3400c_setmode(client, MSP_MODE_FM_TERRA);
564 state->nicam_on = 0;
565 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
566 state->watch_stereo = 1;
567 } else if (max2 == 1 && state->has_nicam) {
568 /* B/G NICAM */
569 state->second = msp3400c_carrier_detect_55[max2].cdo;
570 msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
571 state->nicam_on = 1;
572 msp3400c_setcarrier(client, state->second, state->main);
573 state->watch_stereo = 1;
574 } else {
575 goto no_second;
576 }
577 break;
578 case 2: /* 6.0 */
579 /* PAL I NICAM */
580 state->second = MSP_CARRIER(6.552);
581 msp3400c_setmode(client, MSP_MODE_FM_NICAM2);
582 state->nicam_on = 1;
583 msp3400c_setcarrier(client, state->second, state->main);
584 state->watch_stereo = 1;
585 break;
586 case 3: /* 6.5 */
587 if (max2 == 1 || max2 == 2) {
588 /* D/K FM-stereo */
589 state->second = msp3400c_carrier_detect_65[max2].cdo;
590 msp3400c_setmode(client, MSP_MODE_FM_TERRA);
591 state->nicam_on = 0;
592 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
593 state->watch_stereo = 1;
594 } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
595 /* L NICAM or AM-mono */
596 state->second = msp3400c_carrier_detect_65[max2].cdo;
597 msp3400c_setmode(client, MSP_MODE_AM_NICAM);
598 state->nicam_on = 0;
599 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
600 msp3400c_setcarrier(client, state->second, state->main);
601 /* volume prescale for SCART (AM mono input) */
602 msp_write_dsp(client, 0x000d, 0x1900);
603 state->watch_stereo = 1;
604 } else if (max2 == 0 && state->has_nicam) {
605 /* D/K NICAM */
606 state->second = msp3400c_carrier_detect_65[max2].cdo;
607 msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
608 state->nicam_on = 1;
609 msp3400c_setcarrier(client, state->second, state->main);
610 state->watch_stereo = 1;
611 } else {
612 goto no_second;
613 }
614 break;
615 case 0: /* 4.5 */
616 default:
617 no_second:
618 state->second = msp3400c_carrier_detect_main[max1].cdo;
619 msp3400c_setmode(client, MSP_MODE_FM_TERRA);
620 state->nicam_on = 0;
621 msp3400c_setcarrier(client, state->second, state->main);
622 state->rxsubchans = V4L2_TUNER_SUB_MONO;
623 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
624 break;
625 }
626
627 /* unmute */
628 msp_set_audio(client);
629
630 if (debug)
631 msp3400c_print_mode(client);
632
633 /* monitor tv audio mode */
634 while (state->watch_stereo) {
635 if (msp_sleep(state,5000))
636 goto restart;
637 watch_stereo(client);
638 }
639 }
640 v4l_dbg(1, client, "thread: exit\n");
641 return 0;
642}
643
644
645int msp3410d_thread(void *data)
646{
647 struct i2c_client *client = data;
648 struct msp_state *state = i2c_get_clientdata(client);
649 int val, i, std;
650
651 v4l_dbg(1, client, "msp3410 daemon started\n");
652
653 for (;;) {
654 v4l_dbg(2, client, "msp3410 thread: sleep\n");
655 msp_sleep(state,-1);
656 v4l_dbg(2, client, "msp3410 thread: wakeup\n");
657
658 restart:
659 v4l_dbg(1, client, "thread: restart scan\n");
660 state->restart = 0;
661 if (kthread_should_stop())
662 break;
663
664 if (state->mode == MSP_MODE_EXTERN) {
665 /* no carrier scan needed, just unmute */
666 v4l_dbg(1, client, "thread: no carrier scan\n");
667 msp_set_audio(client);
668 continue;
669 }
670
671 /* put into sane state (and mute) */
672 msp_reset(client);
673
674 /* some time for the tuner to sync */
675 if (msp_sleep(state,200))
676 goto restart;
677
678 /* start autodetect */
679 if (state->radio)
680 std = 0x40;
681 else
682 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
683 state->watch_stereo = 0;
684
685 if (debug)
686 v4l_dbg(1, client, "setting standard: %s (0x%04x)\n",
687 msp_standard_std_name(std), std);
688
689 if (std != 1) {
690 /* programmed some specific mode */
691 val = std;
692 } else {
693 /* triggered autodetect */
694 msp_write_dem(client, 0x20, std);
695 for (;;) {
696 if (msp_sleep(state, 100))
697 goto restart;
698
699 /* check results */
700 val = msp_read_dem(client, 0x7e);
701 if (val < 0x07ff)
702 break;
703 v4l_dbg(1, client, "detection still in progress\n");
704 }
705 }
706 for (i = 0; msp_stdlist[i].name != NULL; i++)
707 if (msp_stdlist[i].retval == val)
708 break;
709 v4l_dbg(1, client, "current standard: %s (0x%04x)\n",
710 msp_standard_std_name(val), val);
711 state->main = msp_stdlist[i].main;
712 state->second = msp_stdlist[i].second;
713 state->std = val;
714
715 if (amsound && !state->radio && (state->v4l2_std & V4L2_STD_SECAM) &&
716 (val != 0x0009)) {
717 /* autodetection has failed, let backup */
718 v4l_dbg(1, client, "autodetection failed,"
719 " switching to backup standard: %s (0x%04x)\n",
720 msp_stdlist[8].name ? msp_stdlist[8].name : "unknown",val);
721 val = 0x0009;
722 msp_write_dem(client, 0x20, val);
723 }
724
725 /* set various prescales */
726 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
727 msp_write_dsp(client, 0x0e, 0x2403); /* FM */
728 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
729
730 /* set stereo */
731 switch (val) {
732 case 0x0008: /* B/G NICAM */
733 case 0x000a: /* I NICAM */
734 if (val == 0x0008)
735 state->mode = MSP_MODE_FM_NICAM1;
736 else
737 state->mode = MSP_MODE_FM_NICAM2;
738 /* just turn on stereo */
739 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
740 state->nicam_on = 1;
741 state->watch_stereo = 1;
742 msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO);
743 break;
744 case 0x0009:
745 state->mode = MSP_MODE_AM_NICAM;
746 state->rxsubchans = V4L2_TUNER_SUB_MONO;
747 state->nicam_on = 1;
748 msp3400c_setstereo(client,V4L2_TUNER_MODE_MONO);
749 state->watch_stereo = 1;
750 break;
751 case 0x0020: /* BTSC */
752 /* just turn on stereo */
753 state->mode = MSP_MODE_BTSC;
754 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
755 state->nicam_on = 0;
756 state->watch_stereo = 1;
757 msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO);
758 break;
759 case 0x0040: /* FM radio */
760 state->mode = MSP_MODE_FM_RADIO;
761 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
762 state->audmode = V4L2_TUNER_MODE_STEREO;
763 state->nicam_on = 0;
764 state->watch_stereo = 0;
765 /* not needed in theory if we have radio, but
766 short programming enables carrier mute */
767 msp3400c_setmode(client, MSP_MODE_FM_RADIO);
768 msp3400c_setcarrier(client, MSP_CARRIER(10.7),
769 MSP_CARRIER(10.7));
770 /* scart routing */
771 msp_set_scart(client,SCART_IN2,0);
772 /* msp34xx does radio decoding */
773 msp_write_dsp(client, 0x08, 0x0020);
774 msp_write_dsp(client, 0x09, 0x0020);
775 msp_write_dsp(client, 0x0b, 0x0020);
776 break;
777 case 0x0003:
778 case 0x0004:
779 case 0x0005:
780 state->mode = MSP_MODE_FM_TERRA;
781 state->rxsubchans = V4L2_TUNER_SUB_MONO;
782 state->audmode = V4L2_TUNER_MODE_MONO;
783 state->nicam_on = 0;
784 state->watch_stereo = 1;
785 break;
786 }
787
788 /* unmute, restore misc registers */
789 msp_set_audio(client);
790 msp_write_dsp(client, 0x13, state->acb);
791 if (state->has_i2s_conf)
792 msp_write_dem(client, 0x40, state->i2s_mode);
793
794 /* monitor tv audio mode */
795 while (state->watch_stereo) {
796 if (msp_sleep(state,5000))
797 goto restart;
798 watch_stereo(client);
799 }
800 }
801 v4l_dbg(1, client, "thread: exit\n");
802 return 0;
803}
804
805/* ----------------------------------------------------------------------- */
806
807/* msp34xxG + (autoselect no-thread) */
808/* this one uses both automatic standard detection and automatic sound */
809/* select which are available in the newer G versions */
810/* struct msp: only norm, acb and source are really used in this mode */
811
812/* set the same 'source' for the loudspeaker, scart and quasi-peak detector
813 * the value for source is the same as bit 15:8 of DSP registers 0x08,
814 * 0x0a and 0x0c: 0=mono, 1=stereo or A|B, 2=SCART, 3=stereo or A, 4=stereo or B
815 *
816 * this function replaces msp3400c_setstereo
817 */
818static void msp34xxg_set_source(struct i2c_client *client, int source)
819{
820 struct msp_state *state = i2c_get_clientdata(client);
821
822 /* fix matrix mode to stereo and let the msp choose what
823 * to output according to 'source', as recommended
824 * for MONO (source==0) downmixing set bit[7:0] to 0x30
825 */
826 int value = (source & 0x07) << 8 | (source == 0 ? 0x30 : 0x20);
827
828 v4l_dbg(1, client, "set source to %d (0x%x)\n", source, value);
829 /* Loudspeaker Output */
830 msp_write_dsp(client, 0x08, value);
831 /* SCART1 DA Output */
832 msp_write_dsp(client, 0x0a, value);
833 /* Quasi-peak detector */
834 msp_write_dsp(client, 0x0c, value);
835 /*
836 * set identification threshold. Personally, I
837 * I set it to a higher value that the default
838 * of 0x190 to ignore noisy stereo signals.
839 * this needs tuning. (recommended range 0x00a0-0x03c0)
840 * 0x7f0 = forced mono mode
841 */
842 /* a2 threshold for stereo/bilingual */
843 msp_write_dem(client, 0x22, stereo_threshold);
844 state->source = source;
845}
846
847/* (re-)initialize the msp34xxg, according to the current norm in state->norm
848 * return 0 if it worked, -1 if it failed
849 */
850static int msp34xxg_reset(struct i2c_client *client)
851{
852 struct msp_state *state = i2c_get_clientdata(client);
853 int modus, std;
854
855 if (msp_reset(client))
856 return -1;
857
858 /* make sure that input/output is muted (paranoid mode) */
859 /* ACB, mute DSP input, mute SCART 1 */
860 if (msp_write_dsp(client, 0x13, 0x0f20))
861 return -1;
862
863 if (state->has_i2s_conf)
864 msp_write_dem(client, 0x40, state->i2s_mode);
865
866 /* step-by-step initialisation, as described in the manual */
867 modus = msp_modus(client);
868 if (state->radio)
869 std = 0x40;
870 else
871 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
872 modus &= ~0x03; /* STATUS_CHANGE = 0 */
873 modus |= 0x01; /* AUTOMATIC_SOUND_DETECTION = 1 */
874 if (msp_write_dem(client, 0x30, modus))
875 return -1;
876 if (msp_write_dem(client, 0x20, std))
877 return -1;
878
879 /* write the dsps that may have an influence on
880 standard/audio autodetection right now */
881 msp34xxg_set_source(client, state->source);
882
883 /* AM/FM Prescale [15:8] 75khz deviation */
884 if (msp_write_dsp(client, 0x0e, 0x3000))
885 return -1;
886
887 /* NICAM Prescale 9db gain (as recommended) */
888 if (msp_write_dsp(client, 0x10, 0x5a00))
889 return -1;
890
891 return 0;
892}
893
894int msp34xxg_thread(void *data)
895{
896 struct i2c_client *client = data;
897 struct msp_state *state = i2c_get_clientdata(client);
898 int val, std, i;
899
900 v4l_dbg(1, client, "msp34xxg daemon started\n");
901
902 state->source = 1; /* default */
903 for (;;) {
904 v4l_dbg(2, client, "msp34xxg thread: sleep\n");
905 msp_sleep(state, -1);
906 v4l_dbg(2, client, "msp34xxg thread: wakeup\n");
907
908 restart:
909 v4l_dbg(1, client, "thread: restart scan\n");
910 state->restart = 0;
911 if (kthread_should_stop())
912 break;
913
914 /* setup the chip*/
915 msp34xxg_reset(client);
916 std = standard;
917 if (std != 0x01)
918 goto unmute;
919
920 /* watch autodetect */
921 v4l_dbg(1, client, "triggered autodetect, waiting for result\n");
922 for (i = 0; i < 10; i++) {
923 if (msp_sleep(state, 100))
924 goto restart;
925
926 /* check results */
927 val = msp_read_dem(client, 0x7e);
928 if (val < 0x07ff) {
929 std = val;
930 break;
931 }
932 v4l_dbg(2, client, "detection still in progress\n");
933 }
934 if (std == 1) {
935 v4l_dbg(1, client, "detection still in progress after 10 tries. giving up.\n");
936 continue;
937 }
938
939 unmute:
940 state->std = std;
941 v4l_dbg(1, client, "current standard: %s (0x%04x)\n",
942 msp_standard_std_name(std), std);
943
944 /* unmute: dispatch sound to scart output, set scart volume */
945 msp_set_audio(client);
946
947 /* restore ACB */
948 if (msp_write_dsp(client, 0x13, state->acb))
949 return -1;
950
951 msp_write_dem(client, 0x40, state->i2s_mode);
952 }
953 v4l_dbg(1, client, "thread: exit\n");
954 return 0;
955}
956
957void msp34xxg_detect_stereo(struct i2c_client *client)
958{
959 struct msp_state *state = i2c_get_clientdata(client);
960
961 int status = msp_read_dem(client, 0x0200);
962 int is_bilingual = status & 0x100;
963 int is_stereo = status & 0x40;
964
965 state->rxsubchans = 0;
966 if (is_stereo)
967 state->rxsubchans |= V4L2_TUNER_SUB_STEREO;
968 else
969 state->rxsubchans |= V4L2_TUNER_SUB_MONO;
970 if (is_bilingual) {
971 state->rxsubchans |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
972 /* I'm supposed to check whether it's SAP or not
973 * and set only LANG2/SAP in this case. Yet, the MSP
974 * does a lot of work to hide this and handle everything
975 * the same way. I don't want to work around it so unless
976 * this is a problem, I'll handle SAP just like lang1/lang2.
977 */
978 }
979 v4l_dbg(1, client, "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
980 status, is_stereo, is_bilingual, state->rxsubchans);
981}
982
983void msp34xxg_set_audmode(struct i2c_client *client, int audmode)
984{
985 struct msp_state *state = i2c_get_clientdata(client);
986 int source;
987
988 switch (audmode) {
989 case V4L2_TUNER_MODE_MONO:
990 source = 0; /* mono only */
991 break;
992 case V4L2_TUNER_MODE_STEREO:
993 source = 1; /* stereo or A|B, see comment in msp34xxg_get_v4l2_stereo() */
994 /* problem: that could also mean 2 (scart input) */
995 break;
996 case V4L2_TUNER_MODE_LANG1:
997 source = 3; /* stereo or A */
998 break;
999 case V4L2_TUNER_MODE_LANG2:
1000 source = 4; /* stereo or B */
1001 break;
1002 default:
1003 audmode = 0;
1004 source = 1;
1005 break;
1006 }
1007 state->audmode = audmode;
1008 msp34xxg_set_source(client, source);
1009}
1010
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-07 13:51:01 -0500