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[mirror_ubuntu-jammy-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/videodev.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 } 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 { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875), "6.5/5.74 D/K3 Dual FM-Stereo" },
49 { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85), "5.5/5.85 B/G NICAM FM" },
50 { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 L NICAM AM" },
51 { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55), "6.0/6.55 I NICAM FM" },
52 { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM" },
53 { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV2)" },
54 { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV3)" },
55 { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Stereo" },
56 { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Mono + SAP" },
57 { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M EIA-J Japan Stereo" },
58 { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7), "10.7 FM-Stereo Radio" },
59 { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 SAT-Mono" },
60 { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20), "7.02/7.20 SAT-Stereo" },
61 { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2), "7.2 SAT ADR" },
62 { -1, 0, 0, NULL }, /* EOF */
63 };
64
65 static struct msp3400c_init_data_dem {
66 int fir1[6];
67 int fir2[6];
68 int cdo1;
69 int cdo2;
70 int ad_cv;
71 int mode_reg;
72 int dsp_src;
73 int dsp_matrix;
74 } msp3400c_init_data[] = {
75 { /* AM (for carrier detect / msp3400) */
76 {75, 19, 36, 35, 39, 40},
77 {75, 19, 36, 35, 39, 40},
78 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
79 0x00d0, 0x0500, 0x0020, 0x3000
80 },{ /* AM (for carrier detect / msp3410) */
81 {-1, -1, -8, 2, 59, 126},
82 {-1, -1, -8, 2, 59, 126},
83 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
84 0x00d0, 0x0100, 0x0020, 0x3000
85 },{ /* FM Radio */
86 {-8, -8, 4, 6, 78, 107},
87 {-8, -8, 4, 6, 78, 107},
88 MSP_CARRIER(10.7), MSP_CARRIER(10.7),
89 0x00d0, 0x0480, 0x0020, 0x3000
90 },{ /* Terrestial FM-mono + FM-stereo */
91 {3, 18, 27, 48, 66, 72},
92 {3, 18, 27, 48, 66, 72},
93 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
94 0x00d0, 0x0480, 0x0030, 0x3000
95 },{ /* Sat FM-mono */
96 { 1, 9, 14, 24, 33, 37},
97 { 3, 18, 27, 48, 66, 72},
98 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
99 0x00c6, 0x0480, 0x0000, 0x3000
100 },{ /* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */
101 {-2, -8, -10, 10, 50, 86},
102 {3, 18, 27, 48, 66, 72},
103 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
104 0x00d0, 0x0040, 0x0120, 0x3000
105 },{ /* NICAM/FM -- I (6.0/6.552) */
106 {2, 4, -6, -4, 40, 94},
107 {3, 18, 27, 48, 66, 72},
108 MSP_CARRIER(6.0), MSP_CARRIER(6.0),
109 0x00d0, 0x0040, 0x0120, 0x3000
110 },{ /* NICAM/AM -- L (6.5/5.85) */
111 {-2, -8, -10, 10, 50, 86},
112 {-4, -12, -9, 23, 79, 126},
113 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
114 0x00c6, 0x0140, 0x0120, 0x7c00
115 },
116 };
117
118 struct msp3400c_carrier_detect {
119 int cdo;
120 char *name;
121 };
122
123 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
124 /* main carrier */
125 { MSP_CARRIER(4.5), "4.5 NTSC" },
126 { MSP_CARRIER(5.5), "5.5 PAL B/G" },
127 { MSP_CARRIER(6.0), "6.0 PAL I" },
128 { MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" }
129 };
130
131 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
132 /* PAL B/G */
133 { MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
134 { MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
135 };
136
137 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
138 /* PAL SAT / SECAM */
139 { MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" },
140 { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
141 { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
142 { MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
143 { MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
144 { MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
145 };
146
147 /* ------------------------------------------------------------------------ */
148
149 const char *msp_standard_std_name(int std)
150 {
151 int i;
152
153 for (i = 0; msp_stdlist[i].name != NULL; i++)
154 if (msp_stdlist[i].retval == std)
155 return msp_stdlist[i].name;
156 return "unknown";
157 }
158
159 static void msp_set_source(struct i2c_client *client, u16 src)
160 {
161 struct msp_state *state = i2c_get_clientdata(client);
162
163 if (msp_dolby) {
164 msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
165 msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
166 } else {
167 msp_write_dsp(client, 0x0008, src);
168 msp_write_dsp(client, 0x0009, src);
169 }
170 msp_write_dsp(client, 0x000a, src);
171 msp_write_dsp(client, 0x000b, src);
172 msp_write_dsp(client, 0x000c, src);
173 if (state->has_scart2_out)
174 msp_write_dsp(client, 0x0041, src);
175 }
176
177 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
178 {
179 msp_write_dem(client, 0x0093, cdo1 & 0xfff);
180 msp_write_dem(client, 0x009b, cdo1 >> 12);
181 msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
182 msp_write_dem(client, 0x00ab, cdo2 >> 12);
183 msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
184 }
185
186 void msp3400c_set_mode(struct i2c_client *client, int mode)
187 {
188 struct msp_state *state = i2c_get_clientdata(client);
189 struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
190 int tuner = (state->routing.input >> 3) & 1;
191 int i;
192
193 v4l_dbg(1, msp_debug, client, "set_mode: %d\n", mode);
194 state->mode = mode;
195 state->rxsubchans = V4L2_TUNER_SUB_MONO;
196
197 msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
198
199 for (i = 5; i >= 0; i--) /* fir 1 */
200 msp_write_dem(client, 0x0001, data->fir1[i]);
201
202 msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
203 msp_write_dem(client, 0x0005, 0x0040);
204 msp_write_dem(client, 0x0005, 0x0000);
205 for (i = 5; i >= 0; i--)
206 msp_write_dem(client, 0x0005, data->fir2[i]);
207
208 msp_write_dem(client, 0x0083, data->mode_reg);
209
210 msp3400c_set_carrier(client, data->cdo1, data->cdo2);
211
212 msp_set_source(client, data->dsp_src);
213 /* set prescales */
214
215 /* volume prescale for SCART (AM mono input) */
216 msp_write_dsp(client, 0x000d, 0x1900);
217 msp_write_dsp(client, 0x000e, data->dsp_matrix);
218 if (state->has_nicam) /* nicam prescale */
219 msp_write_dsp(client, 0x0010, 0x5a00);
220 }
221
222 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
223 nor do they support stereo BTSC. */
224 static void msp3400c_set_audmode(struct i2c_client *client)
225 {
226 static char *strmode[] = { "mono", "stereo", "lang2", "lang1", "lang1+lang2" };
227 struct msp_state *state = i2c_get_clientdata(client);
228 char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
229 strmode[state->audmode] : "unknown";
230 int src = 0; /* channel source: FM/AM, nicam or SCART */
231 int audmode = state->audmode;
232
233 if (state->opmode == OPMODE_AUTOSELECT) {
234 /* this method would break everything, let's make sure
235 * it's never called
236 */
237 v4l_dbg(1, msp_debug, client,
238 "set_audmode called with mode=%d instead of set_source (ignored)\n",
239 state->audmode);
240 return;
241 }
242
243 /* Note: for the C and D revs no NTSC stereo + SAP is possible as
244 the hardware does not support SAP. So the rxsubchans combination
245 of STEREO | LANG2 does not occur. */
246
247 if (state->mode != MSP_MODE_EXTERN) {
248 /* switch to mono if only mono is available */
249 if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
250 audmode = V4L2_TUNER_MODE_MONO;
251 /* if bilingual */
252 else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
253 /* and mono or stereo, then fallback to lang1 */
254 if (audmode == V4L2_TUNER_MODE_MONO ||
255 audmode == V4L2_TUNER_MODE_STEREO)
256 audmode = V4L2_TUNER_MODE_LANG1;
257 }
258 /* if stereo, and audmode is not mono, then switch to stereo */
259 else if (audmode != V4L2_TUNER_MODE_MONO)
260 audmode = V4L2_TUNER_MODE_STEREO;
261 }
262
263 /* switch demodulator */
264 switch (state->mode) {
265 case MSP_MODE_FM_TERRA:
266 v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr);
267 switch (audmode) {
268 case V4L2_TUNER_MODE_STEREO:
269 msp_write_dsp(client, 0x000e, 0x3001);
270 break;
271 case V4L2_TUNER_MODE_MONO:
272 case V4L2_TUNER_MODE_LANG1:
273 case V4L2_TUNER_MODE_LANG2:
274 case V4L2_TUNER_MODE_LANG1_LANG2:
275 msp_write_dsp(client, 0x000e, 0x3000);
276 break;
277 }
278 break;
279 case MSP_MODE_FM_SAT:
280 v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr);
281 switch (audmode) {
282 case V4L2_TUNER_MODE_MONO:
283 msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
284 break;
285 case V4L2_TUNER_MODE_STEREO:
286 case V4L2_TUNER_MODE_LANG1_LANG2:
287 msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
288 break;
289 case V4L2_TUNER_MODE_LANG1:
290 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
291 break;
292 case V4L2_TUNER_MODE_LANG2:
293 msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
294 break;
295 }
296 break;
297 case MSP_MODE_FM_NICAM1:
298 case MSP_MODE_FM_NICAM2:
299 case MSP_MODE_AM_NICAM:
300 v4l_dbg(1, msp_debug, client, "NICAM set_audmode: %s\n",modestr);
301 if (state->nicam_on)
302 src = 0x0100; /* NICAM */
303 break;
304 case MSP_MODE_BTSC:
305 v4l_dbg(1, msp_debug, client, "BTSC set_audmode: %s\n",modestr);
306 break;
307 case MSP_MODE_EXTERN:
308 v4l_dbg(1, msp_debug, client, "extern set_audmode: %s\n",modestr);
309 src = 0x0200; /* SCART */
310 break;
311 case MSP_MODE_FM_RADIO:
312 v4l_dbg(1, msp_debug, client, "FM-Radio set_audmode: %s\n",modestr);
313 break;
314 default:
315 v4l_dbg(1, msp_debug, client, "mono set_audmode\n");
316 return;
317 }
318
319 /* switch audio */
320 v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode);
321 switch (audmode) {
322 case V4L2_TUNER_MODE_STEREO:
323 case V4L2_TUNER_MODE_LANG1_LANG2:
324 src |= 0x0020;
325 break;
326 case V4L2_TUNER_MODE_MONO:
327 if (state->mode == MSP_MODE_AM_NICAM) {
328 v4l_dbg(1, msp_debug, client, "switching to AM mono\n");
329 /* AM mono decoding is handled by tuner, not MSP chip */
330 /* SCART switching control register */
331 msp_set_scart(client, SCART_MONO, 0);
332 src = 0x0200;
333 break;
334 }
335 if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
336 src = 0x0030;
337 break;
338 case V4L2_TUNER_MODE_LANG1:
339 break;
340 case V4L2_TUNER_MODE_LANG2:
341 src |= 0x0010;
342 break;
343 }
344 v4l_dbg(1, msp_debug, client, "set_audmode final source/matrix = 0x%x\n", src);
345
346 msp_set_source(client, src);
347 }
348
349 static void msp3400c_print_mode(struct i2c_client *client)
350 {
351 struct msp_state *state = i2c_get_clientdata(client);
352
353 if (state->main == state->second) {
354 v4l_dbg(1, msp_debug, client, "mono sound carrier: %d.%03d MHz\n",
355 state->main / 910000, (state->main / 910) % 1000);
356 } else {
357 v4l_dbg(1, msp_debug, client, "main sound carrier: %d.%03d MHz\n",
358 state->main / 910000, (state->main / 910) % 1000);
359 }
360 if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
361 v4l_dbg(1, msp_debug, client, "NICAM/FM carrier : %d.%03d MHz\n",
362 state->second / 910000, (state->second/910) % 1000);
363 if (state->mode == MSP_MODE_AM_NICAM)
364 v4l_dbg(1, msp_debug, client, "NICAM/AM carrier : %d.%03d MHz\n",
365 state->second / 910000, (state->second / 910) % 1000);
366 if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
367 v4l_dbg(1, msp_debug, client, "FM-stereo carrier : %d.%03d MHz\n",
368 state->second / 910000, (state->second / 910) % 1000);
369 }
370 }
371
372 /* ----------------------------------------------------------------------- */
373
374 static int msp3400c_detect_stereo(struct i2c_client *client)
375 {
376 struct msp_state *state = i2c_get_clientdata(client);
377 int val;
378 int rxsubchans = state->rxsubchans;
379 int newnicam = state->nicam_on;
380 int update = 0;
381
382 switch (state->mode) {
383 case MSP_MODE_FM_TERRA:
384 val = msp_read_dsp(client, 0x18);
385 if (val > 32767)
386 val -= 65536;
387 v4l_dbg(2, msp_debug, client, "stereo detect register: %d\n", val);
388 if (val > 8192) {
389 rxsubchans = V4L2_TUNER_SUB_STEREO;
390 } else if (val < -4096) {
391 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
392 } else {
393 rxsubchans = V4L2_TUNER_SUB_MONO;
394 }
395 newnicam = 0;
396 break;
397 case MSP_MODE_FM_NICAM1:
398 case MSP_MODE_FM_NICAM2:
399 case MSP_MODE_AM_NICAM:
400 val = msp_read_dem(client, 0x23);
401 v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
402 val & 1, (val & 0x1e) >> 1);
403
404 if (val & 1) {
405 /* nicam synced */
406 switch ((val & 0x1e) >> 1) {
407 case 0:
408 case 8:
409 rxsubchans = V4L2_TUNER_SUB_STEREO;
410 break;
411 case 1:
412 case 9:
413 rxsubchans = V4L2_TUNER_SUB_MONO;
414 break;
415 case 2:
416 case 10:
417 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
418 break;
419 default:
420 rxsubchans = V4L2_TUNER_SUB_MONO;
421 break;
422 }
423 newnicam = 1;
424 } else {
425 newnicam = 0;
426 rxsubchans = V4L2_TUNER_SUB_MONO;
427 }
428 break;
429 }
430 if (rxsubchans != state->rxsubchans) {
431 update = 1;
432 v4l_dbg(1, msp_debug, client, "watch: rxsubchans %02x => %02x\n",
433 state->rxsubchans, rxsubchans);
434 state->rxsubchans = rxsubchans;
435 }
436 if (newnicam != state->nicam_on) {
437 update = 1;
438 v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n",
439 state->nicam_on, newnicam);
440 state->nicam_on = newnicam;
441 }
442 return update;
443 }
444
445 /*
446 * A kernel thread for msp3400 control -- we don't want to block the
447 * in the ioctl while doing the sound carrier & stereo detect
448 */
449 /* stereo/multilang monitoring */
450 static void watch_stereo(struct i2c_client *client)
451 {
452 struct msp_state *state = i2c_get_clientdata(client);
453
454 if (msp_detect_stereo(client)) {
455 msp_set_audmode(client);
456 }
457
458 if (msp_once)
459 state->watch_stereo = 0;
460 }
461
462 int msp3400c_thread(void *data)
463 {
464 struct i2c_client *client = data;
465 struct msp_state *state = i2c_get_clientdata(client);
466 struct msp3400c_carrier_detect *cd;
467 int count, max1, max2, val1, val2, val, this;
468
469
470 v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n");
471 for (;;) {
472 v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n");
473 msp_sleep(state, -1);
474 v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n");
475
476 restart:
477 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
478 state->restart = 0;
479 if (kthread_should_stop())
480 break;
481
482 if (state->radio || MSP_MODE_EXTERN == state->mode) {
483 /* no carrier scan, just unmute */
484 v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
485 state->scan_in_progress = 0;
486 msp_set_audio(client);
487 continue;
488 }
489
490 /* mute audio */
491 state->scan_in_progress = 1;
492 msp_set_audio(client);
493
494 msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
495 val1 = val2 = 0;
496 max1 = max2 = -1;
497 state->watch_stereo = 0;
498 state->nicam_on = 0;
499
500 /* wait for tuner to settle down after a channel change */
501 if (msp_sleep(state, 200))
502 goto restart;
503
504 /* carrier detect pass #1 -- main carrier */
505 cd = msp3400c_carrier_detect_main;
506 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
507
508 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
509 /* autodetect doesn't work well with AM ... */
510 max1 = 3;
511 count = 0;
512 v4l_dbg(1, msp_debug, client, "AM sound override\n");
513 }
514
515 for (this = 0; this < count; this++) {
516 msp3400c_set_carrier(client, cd[this].cdo, cd[this].cdo);
517 if (msp_sleep(state,100))
518 goto restart;
519 val = msp_read_dsp(client, 0x1b);
520 if (val > 32767)
521 val -= 65536;
522 if (val1 < val)
523 val1 = val, max1 = this;
524 v4l_dbg(1, msp_debug, client, "carrier1 val: %5d / %s\n", val,cd[this].name);
525 }
526
527 /* carrier detect pass #2 -- second (stereo) carrier */
528 switch (max1) {
529 case 1: /* 5.5 */
530 cd = msp3400c_carrier_detect_55;
531 count = ARRAY_SIZE(msp3400c_carrier_detect_55);
532 break;
533 case 3: /* 6.5 */
534 cd = msp3400c_carrier_detect_65;
535 count = ARRAY_SIZE(msp3400c_carrier_detect_65);
536 break;
537 case 0: /* 4.5 */
538 case 2: /* 6.0 */
539 default:
540 cd = NULL;
541 count = 0;
542 break;
543 }
544
545 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
546 /* autodetect doesn't work well with AM ... */
547 cd = NULL;
548 count = 0;
549 max2 = 0;
550 }
551 for (this = 0; this < count; this++) {
552 msp3400c_set_carrier(client, cd[this].cdo, cd[this].cdo);
553 if (msp_sleep(state,100))
554 goto restart;
555 val = msp_read_dsp(client, 0x1b);
556 if (val > 32767)
557 val -= 65536;
558 if (val2 < val)
559 val2 = val, max2 = this;
560 v4l_dbg(1, msp_debug, client, "carrier2 val: %5d / %s\n", val,cd[this].name);
561 }
562
563 /* program the msp3400 according to the results */
564 state->main = msp3400c_carrier_detect_main[max1].cdo;
565 switch (max1) {
566 case 1: /* 5.5 */
567 if (max2 == 0) {
568 /* B/G FM-stereo */
569 state->second = msp3400c_carrier_detect_55[max2].cdo;
570 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
571 state->watch_stereo = 1;
572 } else if (max2 == 1 && state->has_nicam) {
573 /* B/G NICAM */
574 state->second = msp3400c_carrier_detect_55[max2].cdo;
575 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
576 state->nicam_on = 1;
577 state->watch_stereo = 1;
578 } else {
579 goto no_second;
580 }
581 break;
582 case 2: /* 6.0 */
583 /* PAL I NICAM */
584 state->second = MSP_CARRIER(6.552);
585 msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
586 state->nicam_on = 1;
587 state->watch_stereo = 1;
588 break;
589 case 3: /* 6.5 */
590 if (max2 == 1 || max2 == 2) {
591 /* D/K FM-stereo */
592 state->second = msp3400c_carrier_detect_65[max2].cdo;
593 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
594 state->watch_stereo = 1;
595 } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
596 /* L NICAM or AM-mono */
597 state->second = msp3400c_carrier_detect_65[max2].cdo;
598 msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
599 state->watch_stereo = 1;
600 } else if (max2 == 0 && state->has_nicam) {
601 /* D/K NICAM */
602 state->second = msp3400c_carrier_detect_65[max2].cdo;
603 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
604 state->nicam_on = 1;
605 state->watch_stereo = 1;
606 } else {
607 goto no_second;
608 }
609 break;
610 case 0: /* 4.5 */
611 default:
612 no_second:
613 state->second = msp3400c_carrier_detect_main[max1].cdo;
614 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
615 break;
616 }
617 msp3400c_set_carrier(client, state->second, state->main);
618
619 /* unmute */
620 state->scan_in_progress = 0;
621 msp3400c_set_audmode(client);
622 msp_set_audio(client);
623
624 if (msp_debug)
625 msp3400c_print_mode(client);
626
627 /* monitor tv audio mode, the first time don't wait
628 so long to get a quick stereo/bilingual result */
629 count = 3;
630 while (state->watch_stereo) {
631 if (msp_sleep(state, count ? 1000 : 5000))
632 goto restart;
633 if (count) count--;
634 watch_stereo(client);
635 }
636 }
637 v4l_dbg(1, msp_debug, client, "thread: exit\n");
638 return 0;
639 }
640
641
642 int msp3410d_thread(void *data)
643 {
644 struct i2c_client *client = data;
645 struct msp_state *state = i2c_get_clientdata(client);
646 int val, i, std, count;
647
648 v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n");
649
650 for (;;) {
651 v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n");
652 msp_sleep(state,-1);
653 v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n");
654
655 restart:
656 v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
657 state->restart = 0;
658 if (kthread_should_stop())
659 break;
660
661 if (state->mode == MSP_MODE_EXTERN) {
662 /* no carrier scan needed, just unmute */
663 v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
664 state->scan_in_progress = 0;
665 msp_set_audio(client);
666 continue;
667 }
668
669 /* mute audio */
670 state->scan_in_progress = 1;
671 msp_set_audio(client);
672
673 /* start autodetect. Note: autodetect is not supported for
674 NTSC-M and radio, hence we force the standard in those cases. */
675 if (state->radio)
676 std = 0x40;
677 else
678 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
679 state->watch_stereo = 0;
680 state->nicam_on = 0;
681
682 /* wait for tuner to settle down after a channel change */
683 if (msp_sleep(state, 200))
684 goto restart;
685
686 if (msp_debug)
687 v4l_dbg(2, msp_debug, client, "setting standard: %s (0x%04x)\n",
688 msp_standard_std_name(std), std);
689
690 if (std != 1) {
691 /* programmed some specific mode */
692 val = std;
693 } else {
694 /* triggered autodetect */
695 msp_write_dem(client, 0x20, std);
696 for (;;) {
697 if (msp_sleep(state, 100))
698 goto restart;
699
700 /* check results */
701 val = msp_read_dem(client, 0x7e);
702 if (val < 0x07ff)
703 break;
704 v4l_dbg(2, msp_debug, client, "detection still in progress\n");
705 }
706 }
707 for (i = 0; msp_stdlist[i].name != NULL; i++)
708 if (msp_stdlist[i].retval == val)
709 break;
710 v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n",
711 msp_standard_std_name(val), val);
712 state->main = msp_stdlist[i].main;
713 state->second = msp_stdlist[i].second;
714 state->std = val;
715 state->rxsubchans = V4L2_TUNER_SUB_MONO;
716
717 if (msp_amsound && !state->radio && (state->v4l2_std & V4L2_STD_SECAM) &&
718 (val != 0x0009)) {
719 /* autodetection has failed, let backup */
720 v4l_dbg(1, msp_debug, client, "autodetection failed,"
721 " switching to backup standard: %s (0x%04x)\n",
722 msp_stdlist[8].name ? msp_stdlist[8].name : "unknown",val);
723 state->std = val = 0x0009;
724 msp_write_dem(client, 0x20, val);
725 }
726
727 /* set stereo */
728 switch (val) {
729 case 0x0008: /* B/G NICAM */
730 case 0x000a: /* I NICAM */
731 case 0x000b: /* D/K NICAM */
732 if (val == 0x000a)
733 state->mode = MSP_MODE_FM_NICAM2;
734 else
735 state->mode = MSP_MODE_FM_NICAM1;
736 /* just turn on stereo */
737 state->nicam_on = 1;
738 state->watch_stereo = 1;
739 break;
740 case 0x0009:
741 state->mode = MSP_MODE_AM_NICAM;
742 state->nicam_on = 1;
743 state->watch_stereo = 1;
744 break;
745 case 0x0020: /* BTSC */
746 /* The pre-'G' models only have BTSC-mono */
747 state->mode = MSP_MODE_BTSC;
748 break;
749 case 0x0040: /* FM radio */
750 state->mode = MSP_MODE_FM_RADIO;
751 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
752 /* not needed in theory if we have radio, but
753 short programming enables carrier mute */
754 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
755 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
756 MSP_CARRIER(10.7));
757 break;
758 case 0x0002:
759 case 0x0003:
760 case 0x0004:
761 case 0x0005:
762 state->mode = MSP_MODE_FM_TERRA;
763 state->watch_stereo = 1;
764 break;
765 }
766
767 /* set various prescales */
768 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
769 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
770 if (state->has_nicam)
771 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
772
773 if (state->has_i2s_conf)
774 msp_write_dem(client, 0x40, state->i2s_mode);
775
776 /* unmute */
777 msp3400c_set_audmode(client);
778 state->scan_in_progress = 0;
779 msp_set_audio(client);
780
781 /* monitor tv audio mode, the first time don't wait
782 so long to get a quick stereo/bilingual result */
783 count = 3;
784 while (state->watch_stereo) {
785 if (msp_sleep(state, count ? 1000 : 5000))
786 goto restart;
787 if (count) count--;
788 watch_stereo(client);
789 }
790 }
791 v4l_dbg(1, msp_debug, client, "thread: exit\n");
792 return 0;
793 }
794
795 /* ----------------------------------------------------------------------- */
796
797 /* msp34xxG + (autoselect no-thread)
798 * this one uses both automatic standard detection and automatic sound
799 * select which are available in the newer G versions
800 * struct msp: only norm, acb and source are really used in this mode
801 */
802
803 static int msp34xxg_modus(struct i2c_client *client)
804 {
805 struct msp_state *state = i2c_get_clientdata(client);
806
807 if (state->radio) {
808 v4l_dbg(1, msp_debug, client, "selected radio modus\n");
809 return 0x0001;
810 }
811
812 if (state->v4l2_std & V4L2_STD_PAL) {
813 v4l_dbg(1, msp_debug, client, "selected PAL modus\n");
814 return 0x7001;
815 }
816 if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
817 v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n");
818 return 0x4001;
819 }
820 if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
821 v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n");
822 return 0x0001;
823 }
824 if (state->v4l2_std & V4L2_STD_MN) {
825 v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n");
826 return 0x2001;
827 }
828 if (state->v4l2_std & V4L2_STD_SECAM) {
829 v4l_dbg(1, msp_debug, client, "selected SECAM modus\n");
830 return 0x6001;
831 }
832 return 0x0001;
833 }
834
835 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
836 {
837 struct msp_state *state = i2c_get_clientdata(client);
838 int source, matrix;
839
840 switch (state->audmode) {
841 case V4L2_TUNER_MODE_MONO:
842 source = 0; /* mono only */
843 matrix = 0x30;
844 break;
845 case V4L2_TUNER_MODE_LANG2:
846 source = 4; /* stereo or B */
847 matrix = 0x10;
848 break;
849 case V4L2_TUNER_MODE_LANG1_LANG2:
850 source = 1; /* stereo or A|B */
851 matrix = 0x20;
852 break;
853 case V4L2_TUNER_MODE_LANG1:
854 source = 3; /* stereo or A */
855 matrix = 0x00;
856 break;
857 case V4L2_TUNER_MODE_STEREO:
858 default:
859 source = 3; /* stereo or A */
860 matrix = 0x20;
861 break;
862 }
863
864 if (in == MSP_DSP_IN_TUNER)
865 source = (source << 8) | 0x20;
866 /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
867 instead of 11, 12, 13. So we add one for that msp version. */
868 else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
869 source = ((in + 1) << 8) | matrix;
870 else
871 source = (in << 8) | matrix;
872
873 v4l_dbg(1, msp_debug, client, "set source to %d (0x%x) for output %02x\n",
874 in, source, reg);
875 msp_write_dsp(client, reg, source);
876 }
877
878 static void msp34xxg_set_sources(struct i2c_client *client)
879 {
880 struct msp_state *state = i2c_get_clientdata(client);
881 u32 in = state->routing.input;
882
883 msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
884 /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
885 msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
886 msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
887 msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
888 if (state->has_scart2_out)
889 msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
890 msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
891 }
892
893 /* (re-)initialize the msp34xxg */
894 static void msp34xxg_reset(struct i2c_client *client)
895 {
896 struct msp_state *state = i2c_get_clientdata(client);
897 int tuner = (state->routing.input >> 3) & 1;
898 int modus;
899
900 /* initialize std to 1 (autodetect) to signal that no standard is
901 selected yet. */
902 state->std = 1;
903
904 msp_reset(client);
905
906 if (state->has_i2s_conf)
907 msp_write_dem(client, 0x40, state->i2s_mode);
908
909 /* step-by-step initialisation, as described in the manual */
910 modus = msp34xxg_modus(client);
911 modus |= tuner ? 0x100 : 0;
912 msp_write_dem(client, 0x30, modus);
913
914 /* write the dsps that may have an influence on
915 standard/audio autodetection right now */
916 msp34xxg_set_sources(client);
917
918 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
919 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
920 if (state->has_nicam)
921 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
922
923 /* set identification threshold. Personally, I
924 * I set it to a higher value than the default
925 * of 0x190 to ignore noisy stereo signals.
926 * this needs tuning. (recommended range 0x00a0-0x03c0)
927 * 0x7f0 = forced mono mode
928 *
929 * a2 threshold for stereo/bilingual.
930 * Note: this register is part of the Manual/Compatibility mode.
931 * It is supported by all 'G'-family chips.
932 */
933 msp_write_dem(client, 0x22, msp_stereo_thresh);
934 }
935
936 int msp34xxg_thread(void *data)
937 {
938 struct i2c_client *client = data;
939 struct msp_state *state = i2c_get_clientdata(client);
940 int val, i;
941
942 v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n");
943
944 for (;;) {
945 v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n");
946 msp_sleep(state, -1);
947 v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n");
948
949 restart:
950 v4l_dbg(1, msp_debug, client, "thread: restart scan\n");
951 state->restart = 0;
952 if (kthread_should_stop())
953 break;
954
955 if (state->mode == MSP_MODE_EXTERN) {
956 /* no carrier scan needed, just unmute */
957 v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
958 state->scan_in_progress = 0;
959 msp_set_audio(client);
960 continue;
961 }
962
963 /* setup the chip*/
964 msp34xxg_reset(client);
965 state->std = state->radio ? 0x40 :
966 (state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
967 msp_write_dem(client, 0x20, state->std);
968 /* start autodetect */
969 if (state->std != 1)
970 goto unmute;
971
972 /* watch autodetect */
973 v4l_dbg(1, msp_debug, client, "started autodetect, waiting for result\n");
974 for (i = 0; i < 10; i++) {
975 if (msp_sleep(state, 100))
976 goto restart;
977
978 /* check results */
979 val = msp_read_dem(client, 0x7e);
980 if (val < 0x07ff) {
981 state->std = val;
982 break;
983 }
984 v4l_dbg(2, msp_debug, client, "detection still in progress\n");
985 }
986 if (state->std == 1) {
987 v4l_dbg(1, msp_debug, client, "detection still in progress after 10 tries. giving up.\n");
988 continue;
989 }
990
991 unmute:
992 v4l_dbg(1, msp_debug, client, "detected standard: %s (0x%04x)\n",
993 msp_standard_std_name(state->std), state->std);
994
995 if (state->std == 9) {
996 /* AM NICAM mode */
997 msp_write_dsp(client, 0x0e, 0x7c00);
998 }
999
1000 /* unmute: dispatch sound to scart output, set scart volume */
1001 msp_set_audio(client);
1002
1003 /* restore ACB */
1004 if (msp_write_dsp(client, 0x13, state->acb))
1005 return -1;
1006
1007 /* the periodic stereo/SAP check is only relevant for
1008 the 0x20 standard (BTSC) */
1009 if (state->std != 0x20)
1010 continue;
1011
1012 state->watch_stereo = 1;
1013
1014 /* monitor tv audio mode, the first time don't wait
1015 in order to get a quick stereo/SAP update */
1016 watch_stereo(client);
1017 while (state->watch_stereo) {
1018 watch_stereo(client);
1019 if (msp_sleep(state, 5000))
1020 goto restart;
1021 }
1022 }
1023 v4l_dbg(1, msp_debug, client, "thread: exit\n");
1024 return 0;
1025 }
1026
1027 static int msp34xxg_detect_stereo(struct i2c_client *client)
1028 {
1029 struct msp_state *state = i2c_get_clientdata(client);
1030 int status = msp_read_dem(client, 0x0200);
1031 int is_bilingual = status & 0x100;
1032 int is_stereo = status & 0x40;
1033 int oldrx = state->rxsubchans;
1034
1035 if (state->mode == MSP_MODE_EXTERN)
1036 return 0;
1037
1038 state->rxsubchans = 0;
1039 if (is_stereo)
1040 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1041 else
1042 state->rxsubchans = V4L2_TUNER_SUB_MONO;
1043 if (is_bilingual) {
1044 if (state->std == 0x20)
1045 state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1046 else
1047 state->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1048 }
1049 v4l_dbg(1, msp_debug, client, "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1050 status, is_stereo, is_bilingual, state->rxsubchans);
1051 return (oldrx != state->rxsubchans);
1052 }
1053
1054 static void msp34xxg_set_audmode(struct i2c_client *client)
1055 {
1056 struct msp_state *state = i2c_get_clientdata(client);
1057
1058 if (state->std == 0x20) {
1059 if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1060 (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1061 state->audmode == V4L2_TUNER_MODE_LANG2)) {
1062 msp_write_dem(client, 0x20, 0x21);
1063 } else {
1064 msp_write_dem(client, 0x20, 0x20);
1065 }
1066 }
1067
1068 msp34xxg_set_sources(client);
1069 }
1070
1071 void msp_set_audmode(struct i2c_client *client)
1072 {
1073 struct msp_state *state = i2c_get_clientdata(client);
1074
1075 switch (state->opmode) {
1076 case OPMODE_MANUAL:
1077 case OPMODE_AUTODETECT:
1078 msp3400c_set_audmode(client);
1079 break;
1080 case OPMODE_AUTOSELECT:
1081 msp34xxg_set_audmode(client);
1082 break;
1083 }
1084 }
1085
1086 int msp_detect_stereo(struct i2c_client *client)
1087 {
1088 struct msp_state *state = i2c_get_clientdata(client);
1089
1090 switch (state->opmode) {
1091 case OPMODE_MANUAL:
1092 case OPMODE_AUTODETECT:
1093 return msp3400c_detect_stereo(client);
1094 case OPMODE_AUTOSELECT:
1095 return msp34xxg_detect_stereo(client);
1096 }
1097 return 0;
1098 }
1099
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