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msp3400-kthreads.c
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1 /*
2  * Programming the mspx4xx sound processor family
3  *
4  * (c) 1997-2001 Gerd Knorr <[email protected]>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19  * 02110-1301, USA.
20  */
21 
22 
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/i2c.h>
26 #include <linux/freezer.h>
27 #include <linux/videodev2.h>
28 #include <media/v4l2-common.h>
29 #include <media/msp3400.h>
30 #include <linux/kthread.h>
31 #include <linux/suspend.h>
32 #include "msp3400-driver.h"
33 
34 /* this one uses the automatic sound standard detection of newer msp34xx
35  chip versions */
36 static struct {
37  int retval;
38  int main, second;
39  char *name;
40  v4l2_std_id std;
41 } msp_stdlist[] = {
42  { 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL },
43  { 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL },
44  { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72),
45  "4.5/4.72 M Dual FM-Stereo", V4L2_STD_MN },
46  { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875),
47  "5.5/5.74 B/G Dual FM-Stereo", V4L2_STD_BG },
48  { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125),
49  "6.5/6.25 D/K1 Dual FM-Stereo", V4L2_STD_DK },
50  { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875),
51  "6.5/6.74 D/K2 Dual FM-Stereo", V4L2_STD_DK },
52  { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
53  "6.5 D/K FM-Mono (HDEV3)", V4L2_STD_DK },
54  { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875),
55  "6.5/5.74 D/K3 Dual FM-Stereo", V4L2_STD_DK },
56  { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85),
57  "5.5/5.85 B/G NICAM FM", V4L2_STD_BG },
58  { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
59  "6.5/5.85 L NICAM AM", V4L2_STD_L },
60  { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55),
61  "6.0/6.55 I NICAM FM", V4L2_STD_PAL_I },
62  { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
63  "6.5/5.85 D/K NICAM FM", V4L2_STD_DK },
64  { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
65  "6.5/5.85 D/K NICAM FM (HDEV2)", V4L2_STD_DK },
66  { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
67  "6.5/5.85 D/K NICAM FM (HDEV3)", V4L2_STD_DK },
68  { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
69  "4.5 M BTSC-Stereo", V4L2_STD_MTS },
70  { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
71  "4.5 M BTSC-Mono + SAP", V4L2_STD_MTS },
72  { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
73  "4.5 M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP },
74  { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7),
75  "10.7 FM-Stereo Radio", V4L2_STD_ALL },
76  { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
77  "6.5 SAT-Mono", V4L2_STD_ALL },
78  { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20),
79  "7.02/7.20 SAT-Stereo", V4L2_STD_ALL },
80  { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2),
81  "7.2 SAT ADR", V4L2_STD_ALL },
82  { -1, 0, 0, NULL, 0 }, /* EOF */
83 };
84 
85 static struct msp3400c_init_data_dem {
86  int fir1[6];
87  int fir2[6];
88  int cdo1;
89  int cdo2;
90  int ad_cv;
91  int mode_reg;
92  int dsp_src;
93  int dsp_matrix;
94 } msp3400c_init_data[] = {
95  { /* AM (for carrier detect / msp3400) */
96  {75, 19, 36, 35, 39, 40},
97  {75, 19, 36, 35, 39, 40},
98  MSP_CARRIER(5.5), MSP_CARRIER(5.5),
99  0x00d0, 0x0500, 0x0020, 0x3000
100  }, { /* AM (for carrier detect / msp3410) */
101  {-1, -1, -8, 2, 59, 126},
102  {-1, -1, -8, 2, 59, 126},
103  MSP_CARRIER(5.5), MSP_CARRIER(5.5),
104  0x00d0, 0x0100, 0x0020, 0x3000
105  }, { /* FM Radio */
106  {-8, -8, 4, 6, 78, 107},
107  {-8, -8, 4, 6, 78, 107},
108  MSP_CARRIER(10.7), MSP_CARRIER(10.7),
109  0x00d0, 0x0480, 0x0020, 0x3000
110  }, { /* Terrestrial FM-mono + FM-stereo */
111  {3, 18, 27, 48, 66, 72},
112  {3, 18, 27, 48, 66, 72},
113  MSP_CARRIER(5.5), MSP_CARRIER(5.5),
114  0x00d0, 0x0480, 0x0030, 0x3000
115  }, { /* Sat FM-mono */
116  { 1, 9, 14, 24, 33, 37},
117  { 3, 18, 27, 48, 66, 72},
118  MSP_CARRIER(6.5), MSP_CARRIER(6.5),
119  0x00c6, 0x0480, 0x0000, 0x3000
120  }, { /* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */
121  {-2, -8, -10, 10, 50, 86},
122  {3, 18, 27, 48, 66, 72},
123  MSP_CARRIER(5.5), MSP_CARRIER(5.5),
124  0x00d0, 0x0040, 0x0120, 0x3000
125  }, { /* NICAM/FM -- I (6.0/6.552) */
126  {2, 4, -6, -4, 40, 94},
127  {3, 18, 27, 48, 66, 72},
128  MSP_CARRIER(6.0), MSP_CARRIER(6.0),
129  0x00d0, 0x0040, 0x0120, 0x3000
130  }, { /* NICAM/AM -- L (6.5/5.85) */
131  {-2, -8, -10, 10, 50, 86},
132  {-4, -12, -9, 23, 79, 126},
133  MSP_CARRIER(6.5), MSP_CARRIER(6.5),
134  0x00c6, 0x0140, 0x0120, 0x7c00
135  },
136 };
137 
138 struct msp3400c_carrier_detect {
139  int cdo;
140  char *name;
141 };
142 
143 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
144  /* main carrier */
145  { MSP_CARRIER(4.5), "4.5 NTSC" },
146  { MSP_CARRIER(5.5), "5.5 PAL B/G" },
147  { MSP_CARRIER(6.0), "6.0 PAL I" },
148  { MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" }
149 };
150 
151 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
152  /* PAL B/G */
153  { MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
154  { MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
155 };
156 
157 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
158  /* PAL SAT / SECAM */
159  { MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" },
160  { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
161  { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
162  { MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
163  { MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
164  { MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
165 };
166 
167 /* ------------------------------------------------------------------------ */
168 
169 const char *msp_standard_std_name(int std)
170 {
171  int i;
172 
173  for (i = 0; msp_stdlist[i].name != NULL; i++)
174  if (msp_stdlist[i].retval == std)
175  return msp_stdlist[i].name;
176  return "unknown";
177 }
178 
179 static v4l2_std_id msp_standard_std(int std)
180 {
181  int i;
182 
183  for (i = 0; msp_stdlist[i].name != NULL; i++)
184  if (msp_stdlist[i].retval == std)
185  return msp_stdlist[i].std;
186  return V4L2_STD_ALL;
187 }
188 
189 static void msp_set_source(struct i2c_client *client, u16 src)
190 {
191  struct msp_state *state = to_state(i2c_get_clientdata(client));
192 
193  if (msp_dolby) {
194  msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
195  msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
196  } else {
197  msp_write_dsp(client, 0x0008, src);
198  msp_write_dsp(client, 0x0009, src);
199  }
200  msp_write_dsp(client, 0x000a, src);
201  msp_write_dsp(client, 0x000b, src);
202  msp_write_dsp(client, 0x000c, src);
203  if (state->has_scart2_out)
204  msp_write_dsp(client, 0x0041, src);
205 }
206 
207 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
208 {
209  msp_write_dem(client, 0x0093, cdo1 & 0xfff);
210  msp_write_dem(client, 0x009b, cdo1 >> 12);
211  msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
212  msp_write_dem(client, 0x00ab, cdo2 >> 12);
213  msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
214 }
215 
216 void msp3400c_set_mode(struct i2c_client *client, int mode)
217 {
218  struct msp_state *state = to_state(i2c_get_clientdata(client));
219  struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
220  int tuner = (state->route_in >> 3) & 1;
221  int i;
222 
223  v4l_dbg(1, msp_debug, client, "set_mode: %d\n", mode);
224  state->mode = mode;
225  state->rxsubchans = V4L2_TUNER_SUB_MONO;
226 
227  msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
228 
229  for (i = 5; i >= 0; i--) /* fir 1 */
230  msp_write_dem(client, 0x0001, data->fir1[i]);
231 
232  msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
233  msp_write_dem(client, 0x0005, 0x0040);
234  msp_write_dem(client, 0x0005, 0x0000);
235  for (i = 5; i >= 0; i--)
236  msp_write_dem(client, 0x0005, data->fir2[i]);
237 
238  msp_write_dem(client, 0x0083, data->mode_reg);
239 
240  msp3400c_set_carrier(client, data->cdo1, data->cdo2);
241 
242  msp_set_source(client, data->dsp_src);
243  /* set prescales */
244 
245  /* volume prescale for SCART (AM mono input) */
246  msp_write_dsp(client, 0x000d, 0x1900);
247  msp_write_dsp(client, 0x000e, data->dsp_matrix);
248  if (state->has_nicam) /* nicam prescale */
249  msp_write_dsp(client, 0x0010, 0x5a00);
250 }
251 
252 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
253  nor do they support stereo BTSC. */
254 static void msp3400c_set_audmode(struct i2c_client *client)
255 {
256  static char *strmode[] = {
257  "mono", "stereo", "lang2", "lang1", "lang1+lang2"
258  };
259  struct msp_state *state = to_state(i2c_get_clientdata(client));
260  char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
261  strmode[state->audmode] : "unknown";
262  int src = 0; /* channel source: FM/AM, nicam or SCART */
263  int audmode = state->audmode;
264 
265  if (state->opmode == OPMODE_AUTOSELECT) {
266  /* this method would break everything, let's make sure
267  * it's never called
268  */
269  v4l_dbg(1, msp_debug, client,
270  "set_audmode called with mode=%d instead of set_source (ignored)\n",
271  state->audmode);
272  return;
273  }
274 
275  /* Note: for the C and D revs no NTSC stereo + SAP is possible as
276  the hardware does not support SAP. So the rxsubchans combination
277  of STEREO | LANG2 does not occur. */
278 
279  if (state->mode != MSP_MODE_EXTERN) {
280  /* switch to mono if only mono is available */
281  if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
282  audmode = V4L2_TUNER_MODE_MONO;
283  /* if bilingual */
284  else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
285  /* and mono or stereo, then fallback to lang1 */
286  if (audmode == V4L2_TUNER_MODE_MONO ||
287  audmode == V4L2_TUNER_MODE_STEREO)
288  audmode = V4L2_TUNER_MODE_LANG1;
289  }
290  /* if stereo, and audmode is not mono, then switch to stereo */
291  else if (audmode != V4L2_TUNER_MODE_MONO)
292  audmode = V4L2_TUNER_MODE_STEREO;
293  }
294 
295  /* switch demodulator */
296  switch (state->mode) {
297  case MSP_MODE_FM_TERRA:
298  v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr);
299  switch (audmode) {
300  case V4L2_TUNER_MODE_STEREO:
301  msp_write_dsp(client, 0x000e, 0x3001);
302  break;
303  case V4L2_TUNER_MODE_MONO:
304  case V4L2_TUNER_MODE_LANG1:
305  case V4L2_TUNER_MODE_LANG2:
306  case V4L2_TUNER_MODE_LANG1_LANG2:
307  msp_write_dsp(client, 0x000e, 0x3000);
308  break;
309  }
310  break;
311  case MSP_MODE_FM_SAT:
312  v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr);
313  switch (audmode) {
314  case V4L2_TUNER_MODE_MONO:
315  msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
316  break;
317  case V4L2_TUNER_MODE_STEREO:
318  case V4L2_TUNER_MODE_LANG1_LANG2:
319  msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
320  break;
321  case V4L2_TUNER_MODE_LANG1:
322  msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
323  break;
324  case V4L2_TUNER_MODE_LANG2:
325  msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
326  break;
327  }
328  break;
329  case MSP_MODE_FM_NICAM1:
330  case MSP_MODE_FM_NICAM2:
331  case MSP_MODE_AM_NICAM:
332  v4l_dbg(1, msp_debug, client,
333  "NICAM set_audmode: %s\n", modestr);
334  if (state->nicam_on)
335  src = 0x0100; /* NICAM */
336  break;
337  case MSP_MODE_BTSC:
338  v4l_dbg(1, msp_debug, client,
339  "BTSC set_audmode: %s\n", modestr);
340  break;
341  case MSP_MODE_EXTERN:
342  v4l_dbg(1, msp_debug, client,
343  "extern set_audmode: %s\n", modestr);
344  src = 0x0200; /* SCART */
345  break;
346  case MSP_MODE_FM_RADIO:
347  v4l_dbg(1, msp_debug, client,
348  "FM-Radio set_audmode: %s\n", modestr);
349  break;
350  default:
351  v4l_dbg(1, msp_debug, client, "mono set_audmode\n");
352  return;
353  }
354 
355  /* switch audio */
356  v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode);
357  switch (audmode) {
358  case V4L2_TUNER_MODE_STEREO:
359  case V4L2_TUNER_MODE_LANG1_LANG2:
360  src |= 0x0020;
361  break;
362  case V4L2_TUNER_MODE_MONO:
363  if (state->mode == MSP_MODE_AM_NICAM) {
364  v4l_dbg(1, msp_debug, client, "switching to AM mono\n");
365  /* AM mono decoding is handled by tuner, not MSP chip */
366  /* SCART switching control register */
367  msp_set_scart(client, SCART_MONO, 0);
368  src = 0x0200;
369  break;
370  }
371  if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
372  src = 0x0030;
373  break;
374  case V4L2_TUNER_MODE_LANG1:
375  break;
376  case V4L2_TUNER_MODE_LANG2:
377  src |= 0x0010;
378  break;
379  }
380  v4l_dbg(1, msp_debug, client,
381  "set_audmode final source/matrix = 0x%x\n", src);
382 
383  msp_set_source(client, src);
384 }
385 
386 static void msp3400c_print_mode(struct i2c_client *client)
387 {
388  struct msp_state *state = to_state(i2c_get_clientdata(client));
389 
390  if (state->main == state->second)
391  v4l_dbg(1, msp_debug, client,
392  "mono sound carrier: %d.%03d MHz\n",
393  state->main / 910000, (state->main / 910) % 1000);
394  else
395  v4l_dbg(1, msp_debug, client,
396  "main sound carrier: %d.%03d MHz\n",
397  state->main / 910000, (state->main / 910) % 1000);
398  if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
399  v4l_dbg(1, msp_debug, client,
400  "NICAM/FM carrier : %d.%03d MHz\n",
401  state->second / 910000, (state->second/910) % 1000);
402  if (state->mode == MSP_MODE_AM_NICAM)
403  v4l_dbg(1, msp_debug, client,
404  "NICAM/AM carrier : %d.%03d MHz\n",
405  state->second / 910000, (state->second / 910) % 1000);
406  if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
407  v4l_dbg(1, msp_debug, client,
408  "FM-stereo carrier : %d.%03d MHz\n",
409  state->second / 910000, (state->second / 910) % 1000);
410  }
411 }
412 
413 /* ----------------------------------------------------------------------- */
414 
415 static int msp3400c_detect_stereo(struct i2c_client *client)
416 {
417  struct msp_state *state = to_state(i2c_get_clientdata(client));
418  int val;
419  int rxsubchans = state->rxsubchans;
420  int newnicam = state->nicam_on;
421  int update = 0;
422 
423  switch (state->mode) {
424  case MSP_MODE_FM_TERRA:
425  val = msp_read_dsp(client, 0x18);
426  if (val > 32767)
427  val -= 65536;
428  v4l_dbg(2, msp_debug, client,
429  "stereo detect register: %d\n", val);
430  if (val > 8192) {
431  rxsubchans = V4L2_TUNER_SUB_STEREO;
432  } else if (val < -4096) {
433  rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
434  } else {
435  rxsubchans = V4L2_TUNER_SUB_MONO;
436  }
437  newnicam = 0;
438  break;
439  case MSP_MODE_FM_NICAM1:
440  case MSP_MODE_FM_NICAM2:
441  case MSP_MODE_AM_NICAM:
442  val = msp_read_dem(client, 0x23);
443  v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
444  val & 1, (val & 0x1e) >> 1);
445 
446  if (val & 1) {
447  /* nicam synced */
448  switch ((val & 0x1e) >> 1) {
449  case 0:
450  case 8:
451  rxsubchans = V4L2_TUNER_SUB_STEREO;
452  break;
453  case 1:
454  case 9:
455  rxsubchans = V4L2_TUNER_SUB_MONO;
456  break;
457  case 2:
458  case 10:
459  rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
460  break;
461  default:
462  rxsubchans = V4L2_TUNER_SUB_MONO;
463  break;
464  }
465  newnicam = 1;
466  } else {
467  newnicam = 0;
468  rxsubchans = V4L2_TUNER_SUB_MONO;
469  }
470  break;
471  }
472  if (rxsubchans != state->rxsubchans) {
473  update = 1;
474  v4l_dbg(1, msp_debug, client,
475  "watch: rxsubchans %02x => %02x\n",
476  state->rxsubchans, rxsubchans);
477  state->rxsubchans = rxsubchans;
478  }
479  if (newnicam != state->nicam_on) {
480  update = 1;
481  v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n",
482  state->nicam_on, newnicam);
483  state->nicam_on = newnicam;
484  }
485  return update;
486 }
487 
488 /*
489  * A kernel thread for msp3400 control -- we don't want to block the
490  * in the ioctl while doing the sound carrier & stereo detect
491  */
492 /* stereo/multilang monitoring */
493 static void watch_stereo(struct i2c_client *client)
494 {
495  struct msp_state *state = to_state(i2c_get_clientdata(client));
496 
497  if (msp_detect_stereo(client))
498  msp_set_audmode(client);
499 
500  if (msp_once)
501  state->watch_stereo = 0;
502 }
503 
504 int msp3400c_thread(void *data)
505 {
506  struct i2c_client *client = data;
507  struct msp_state *state = to_state(i2c_get_clientdata(client));
508  struct msp3400c_carrier_detect *cd;
509  int count, max1, max2, val1, val2, val, i;
510 
511  v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n");
512  state->detected_std = V4L2_STD_ALL;
513  set_freezable();
514  for (;;) {
515  v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n");
516  msp_sleep(state, -1);
517  v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n");
518 
519 restart:
520  v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
521  state->restart = 0;
522  if (kthread_should_stop())
523  break;
524 
525  if (state->radio || MSP_MODE_EXTERN == state->mode) {
526  /* no carrier scan, just unmute */
527  v4l_dbg(1, msp_debug, client,
528  "thread: no carrier scan\n");
529  state->scan_in_progress = 0;
530  msp_update_volume(state);
531  continue;
532  }
533 
534  /* mute audio */
535  state->scan_in_progress = 1;
536  msp_update_volume(state);
537 
538  msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
539  val1 = val2 = 0;
540  max1 = max2 = -1;
541  state->watch_stereo = 0;
542  state->nicam_on = 0;
543 
544  /* wait for tuner to settle down after a channel change */
545  if (msp_sleep(state, 200))
546  goto restart;
547 
548  /* carrier detect pass #1 -- main carrier */
549  cd = msp3400c_carrier_detect_main;
550  count = ARRAY_SIZE(msp3400c_carrier_detect_main);
551 
552  if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
553  /* autodetect doesn't work well with AM ... */
554  max1 = 3;
555  count = 0;
556  v4l_dbg(1, msp_debug, client, "AM sound override\n");
557  }
558 
559  for (i = 0; i < count; i++) {
560  msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
561  if (msp_sleep(state, 100))
562  goto restart;
563  val = msp_read_dsp(client, 0x1b);
564  if (val > 32767)
565  val -= 65536;
566  if (val1 < val)
567  val1 = val, max1 = i;
568  v4l_dbg(1, msp_debug, client,
569  "carrier1 val: %5d / %s\n", val, cd[i].name);
570  }
571 
572  /* carrier detect pass #2 -- second (stereo) carrier */
573  switch (max1) {
574  case 1: /* 5.5 */
575  cd = msp3400c_carrier_detect_55;
576  count = ARRAY_SIZE(msp3400c_carrier_detect_55);
577  break;
578  case 3: /* 6.5 */
579  cd = msp3400c_carrier_detect_65;
580  count = ARRAY_SIZE(msp3400c_carrier_detect_65);
581  break;
582  case 0: /* 4.5 */
583  case 2: /* 6.0 */
584  default:
585  cd = NULL;
586  count = 0;
587  break;
588  }
589 
590  if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
591  /* autodetect doesn't work well with AM ... */
592  cd = NULL;
593  count = 0;
594  max2 = 0;
595  }
596  for (i = 0; i < count; i++) {
597  msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
598  if (msp_sleep(state, 100))
599  goto restart;
600  val = msp_read_dsp(client, 0x1b);
601  if (val > 32767)
602  val -= 65536;
603  if (val2 < val)
604  val2 = val, max2 = i;
605  v4l_dbg(1, msp_debug, client,
606  "carrier2 val: %5d / %s\n", val, cd[i].name);
607  }
608 
609  /* program the msp3400 according to the results */
610  state->main = msp3400c_carrier_detect_main[max1].cdo;
611  switch (max1) {
612  case 1: /* 5.5 */
613  state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
614  if (max2 == 0) {
615  /* B/G FM-stereo */
616  state->second = msp3400c_carrier_detect_55[max2].cdo;
617  msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
618  state->watch_stereo = 1;
619  } else if (max2 == 1 && state->has_nicam) {
620  /* B/G NICAM */
621  state->second = msp3400c_carrier_detect_55[max2].cdo;
622  msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
623  state->nicam_on = 1;
624  state->watch_stereo = 1;
625  } else {
626  goto no_second;
627  }
628  break;
629  case 2: /* 6.0 */
630  /* PAL I NICAM */
631  state->detected_std = V4L2_STD_PAL_I;
632  state->second = MSP_CARRIER(6.552);
633  msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
634  state->nicam_on = 1;
635  state->watch_stereo = 1;
636  break;
637  case 3: /* 6.5 */
638  if (max2 == 1 || max2 == 2) {
639  /* D/K FM-stereo */
640  state->second = msp3400c_carrier_detect_65[max2].cdo;
641  msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
642  state->watch_stereo = 1;
643  state->detected_std = V4L2_STD_DK;
644  } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
645  /* L NICAM or AM-mono */
646  state->second = msp3400c_carrier_detect_65[max2].cdo;
647  msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
648  state->watch_stereo = 1;
649  state->detected_std = V4L2_STD_L;
650  } else if (max2 == 0 && state->has_nicam) {
651  /* D/K NICAM */
652  state->second = msp3400c_carrier_detect_65[max2].cdo;
653  msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
654  state->nicam_on = 1;
655  state->watch_stereo = 1;
656  state->detected_std = V4L2_STD_DK;
657  } else {
658  goto no_second;
659  }
660  break;
661  case 0: /* 4.5 */
662  state->detected_std = V4L2_STD_MN;
663  default:
664 no_second:
665  state->second = msp3400c_carrier_detect_main[max1].cdo;
666  msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
667  break;
668  }
669  msp3400c_set_carrier(client, state->second, state->main);
670 
671  /* unmute */
672  state->scan_in_progress = 0;
673  msp3400c_set_audmode(client);
674  msp_update_volume(state);
675 
676  if (msp_debug)
677  msp3400c_print_mode(client);
678 
679  /* monitor tv audio mode, the first time don't wait
680  so long to get a quick stereo/bilingual result */
681  count = 3;
682  while (state->watch_stereo) {
683  if (msp_sleep(state, count ? 1000 : 5000))
684  goto restart;
685  if (count)
686  count--;
687  watch_stereo(client);
688  }
689  }
690  v4l_dbg(1, msp_debug, client, "thread: exit\n");
691  return 0;
692 }
693 
694 
695 int msp3410d_thread(void *data)
696 {
697  struct i2c_client *client = data;
698  struct msp_state *state = to_state(i2c_get_clientdata(client));
699  int val, i, std, count;
700 
701  v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n");
702  state->detected_std = V4L2_STD_ALL;
703  set_freezable();
704  for (;;) {
705  v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n");
706  msp_sleep(state, -1);
707  v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n");
708 
709 restart:
710  v4l_dbg(2, msp_debug, client, "thread: restart scan\n");
711  state->restart = 0;
712  if (kthread_should_stop())
713  break;
714 
715  if (state->mode == MSP_MODE_EXTERN) {
716  /* no carrier scan needed, just unmute */
717  v4l_dbg(1, msp_debug, client,
718  "thread: no carrier scan\n");
719  state->scan_in_progress = 0;
720  msp_update_volume(state);
721  continue;
722  }
723 
724  /* mute audio */
725  state->scan_in_progress = 1;
726  msp_update_volume(state);
727 
728  /* start autodetect. Note: autodetect is not supported for
729  NTSC-M and radio, hence we force the standard in those
730  cases. */
731  if (state->radio)
732  std = 0x40;
733  else
734  std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
735  state->watch_stereo = 0;
736  state->nicam_on = 0;
737 
738  /* wait for tuner to settle down after a channel change */
739  if (msp_sleep(state, 200))
740  goto restart;
741 
742  if (msp_debug)
743  v4l_dbg(2, msp_debug, client,
744  "setting standard: %s (0x%04x)\n",
745  msp_standard_std_name(std), std);
746 
747  if (std != 1) {
748  /* programmed some specific mode */
749  val = std;
750  } else {
751  /* triggered autodetect */
752  msp_write_dem(client, 0x20, std);
753  for (;;) {
754  if (msp_sleep(state, 100))
755  goto restart;
756 
757  /* check results */
758  val = msp_read_dem(client, 0x7e);
759  if (val < 0x07ff)
760  break;
761  v4l_dbg(2, msp_debug, client,
762  "detection still in progress\n");
763  }
764  }
765  for (i = 0; msp_stdlist[i].name != NULL; i++)
766  if (msp_stdlist[i].retval == val)
767  break;
768  v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n",
769  msp_standard_std_name(val), val);
770  state->main = msp_stdlist[i].main;
771  state->second = msp_stdlist[i].second;
772  state->std = val;
773  state->rxsubchans = V4L2_TUNER_SUB_MONO;
774 
775  if (msp_amsound && !state->radio &&
776  (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
777  /* autodetection has failed, let backup */
778  v4l_dbg(1, msp_debug, client, "autodetection failed,"
779  " switching to backup standard: %s (0x%04x)\n",
780  msp_stdlist[8].name ?
781  msp_stdlist[8].name : "unknown", val);
782  state->std = val = 0x0009;
783  msp_write_dem(client, 0x20, val);
784  } else {
785  state->detected_std = msp_standard_std(state->std);
786  }
787 
788  /* set stereo */
789  switch (val) {
790  case 0x0008: /* B/G NICAM */
791  case 0x000a: /* I NICAM */
792  case 0x000b: /* D/K NICAM */
793  if (val == 0x000a)
794  state->mode = MSP_MODE_FM_NICAM2;
795  else
796  state->mode = MSP_MODE_FM_NICAM1;
797  /* just turn on stereo */
798  state->nicam_on = 1;
799  state->watch_stereo = 1;
800  break;
801  case 0x0009:
802  state->mode = MSP_MODE_AM_NICAM;
803  state->nicam_on = 1;
804  state->watch_stereo = 1;
805  break;
806  case 0x0020: /* BTSC */
807  /* The pre-'G' models only have BTSC-mono */
808  state->mode = MSP_MODE_BTSC;
809  break;
810  case 0x0040: /* FM radio */
811  state->mode = MSP_MODE_FM_RADIO;
812  state->rxsubchans = V4L2_TUNER_SUB_STEREO;
813  /* not needed in theory if we have radio, but
814  short programming enables carrier mute */
815  msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
816  msp3400c_set_carrier(client, MSP_CARRIER(10.7),
817  MSP_CARRIER(10.7));
818  break;
819  case 0x0002:
820  case 0x0003:
821  case 0x0004:
822  case 0x0005:
823  state->mode = MSP_MODE_FM_TERRA;
824  state->watch_stereo = 1;
825  break;
826  }
827 
828  /* set various prescales */
829  msp_write_dsp(client, 0x0d, 0x1900); /* scart */
830  msp_write_dsp(client, 0x0e, 0x3000); /* FM */
831  if (state->has_nicam)
832  msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
833 
834  if (state->has_i2s_conf)
835  msp_write_dem(client, 0x40, state->i2s_mode);
836 
837  /* unmute */
838  msp3400c_set_audmode(client);
839  state->scan_in_progress = 0;
840  msp_update_volume(state);
841 
842  /* monitor tv audio mode, the first time don't wait
843  so long to get a quick stereo/bilingual result */
844  count = 3;
845  while (state->watch_stereo) {
846  if (msp_sleep(state, count ? 1000 : 5000))
847  goto restart;
848  if (count)
849  count--;
850  watch_stereo(client);
851  }
852  }
853  v4l_dbg(1, msp_debug, client, "thread: exit\n");
854  return 0;
855 }
856 
857 /* ----------------------------------------------------------------------- */
858 
859 /* msp34xxG + (autoselect no-thread)
860  * this one uses both automatic standard detection and automatic sound
861  * select which are available in the newer G versions
862  * struct msp: only norm, acb and source are really used in this mode
863  */
864 
865 static int msp34xxg_modus(struct i2c_client *client)
866 {
867  struct msp_state *state = to_state(i2c_get_clientdata(client));
868 
869  if (state->radio) {
870  v4l_dbg(1, msp_debug, client, "selected radio modus\n");
871  return 0x0001;
872  }
873  if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
874  v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n");
875  return 0x4001;
876  }
877  if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
878  v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n");
879  return 0x0001;
880  }
881  if (state->v4l2_std == V4L2_STD_SECAM_L) {
882  v4l_dbg(1, msp_debug, client, "selected SECAM-L modus\n");
883  return 0x6001;
884  }
885  if (state->v4l2_std & V4L2_STD_MN) {
886  v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n");
887  return 0x2001;
888  }
889  return 0x7001;
890 }
891 
892 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
893  {
894  struct msp_state *state = to_state(i2c_get_clientdata(client));
895  int source, matrix;
896 
897  switch (state->audmode) {
898  case V4L2_TUNER_MODE_MONO:
899  source = 0; /* mono only */
900  matrix = 0x30;
901  break;
902  case V4L2_TUNER_MODE_LANG2:
903  source = 4; /* stereo or B */
904  matrix = 0x10;
905  break;
906  case V4L2_TUNER_MODE_LANG1_LANG2:
907  source = 1; /* stereo or A|B */
908  matrix = 0x20;
909  break;
910  case V4L2_TUNER_MODE_LANG1:
911  source = 3; /* stereo or A */
912  matrix = 0x00;
913  break;
914  case V4L2_TUNER_MODE_STEREO:
915  default:
916  source = 3; /* stereo or A */
917  matrix = 0x20;
918  break;
919  }
920 
921  if (in == MSP_DSP_IN_TUNER)
922  source = (source << 8) | 0x20;
923  /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
924  instead of 11, 12, 13. So we add one for that msp version. */
925  else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
926  source = ((in + 1) << 8) | matrix;
927  else
928  source = (in << 8) | matrix;
929 
930  v4l_dbg(1, msp_debug, client,
931  "set source to %d (0x%x) for output %02x\n", in, source, reg);
932  msp_write_dsp(client, reg, source);
933 }
934 
935 static void msp34xxg_set_sources(struct i2c_client *client)
936 {
937  struct msp_state *state = to_state(i2c_get_clientdata(client));
938  u32 in = state->route_in;
939 
940  msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
941  /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
942  msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
943  msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
944  msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
945  if (state->has_scart2_out)
946  msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
947  msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
948 }
949 
950 /* (re-)initialize the msp34xxg */
951 static void msp34xxg_reset(struct i2c_client *client)
952 {
953  struct msp_state *state = to_state(i2c_get_clientdata(client));
954  int tuner = (state->route_in >> 3) & 1;
955  int modus;
956 
957  /* initialize std to 1 (autodetect) to signal that no standard is
958  selected yet. */
959  state->std = 1;
960 
961  msp_reset(client);
962 
963  if (state->has_i2s_conf)
964  msp_write_dem(client, 0x40, state->i2s_mode);
965 
966  /* step-by-step initialisation, as described in the manual */
967  modus = msp34xxg_modus(client);
968  modus |= tuner ? 0x100 : 0;
969  msp_write_dem(client, 0x30, modus);
970 
971  /* write the dsps that may have an influence on
972  standard/audio autodetection right now */
973  msp34xxg_set_sources(client);
974 
975  msp_write_dsp(client, 0x0d, 0x1900); /* scart */
976  msp_write_dsp(client, 0x0e, 0x3000); /* FM */
977  if (state->has_nicam)
978  msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
979 
980  /* set identification threshold. Personally, I
981  * I set it to a higher value than the default
982  * of 0x190 to ignore noisy stereo signals.
983  * this needs tuning. (recommended range 0x00a0-0x03c0)
984  * 0x7f0 = forced mono mode
985  *
986  * a2 threshold for stereo/bilingual.
987  * Note: this register is part of the Manual/Compatibility mode.
988  * It is supported by all 'G'-family chips.
989  */
990  msp_write_dem(client, 0x22, msp_stereo_thresh);
991 }
992 
993 int msp34xxg_thread(void *data)
994 {
995  struct i2c_client *client = data;
996  struct msp_state *state = to_state(i2c_get_clientdata(client));
997  int val, i;
998 
999  v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n");
1000  state->detected_std = V4L2_STD_ALL;
1001  set_freezable();
1002  for (;;) {
1003  v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n");
1004  msp_sleep(state, -1);
1005  v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n");
1006 
1007 restart:
1008  v4l_dbg(1, msp_debug, client, "thread: restart scan\n");
1009  state->restart = 0;
1010  if (kthread_should_stop())
1011  break;
1012 
1013  if (state->mode == MSP_MODE_EXTERN) {
1014  /* no carrier scan needed, just unmute */
1015  v4l_dbg(1, msp_debug, client,
1016  "thread: no carrier scan\n");
1017  state->scan_in_progress = 0;
1018  msp_update_volume(state);
1019  continue;
1020  }
1021 
1022  /* setup the chip*/
1023  msp34xxg_reset(client);
1024  state->std = state->radio ? 0x40 :
1025  (state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
1026  msp_write_dem(client, 0x20, state->std);
1027  /* start autodetect */
1028  if (state->std != 1)
1029  goto unmute;
1030 
1031  /* watch autodetect */
1032  v4l_dbg(1, msp_debug, client,
1033  "started autodetect, waiting for result\n");
1034  for (i = 0; i < 10; i++) {
1035  if (msp_sleep(state, 100))
1036  goto restart;
1037 
1038  /* check results */
1039  val = msp_read_dem(client, 0x7e);
1040  if (val < 0x07ff) {
1041  state->std = val;
1042  break;
1043  }
1044  v4l_dbg(2, msp_debug, client,
1045  "detection still in progress\n");
1046  }
1047  if (state->std == 1) {
1048  v4l_dbg(1, msp_debug, client,
1049  "detection still in progress after 10 tries. giving up.\n");
1050  continue;
1051  }
1052 
1053 unmute:
1054  v4l_dbg(1, msp_debug, client,
1055  "detected standard: %s (0x%04x)\n",
1056  msp_standard_std_name(state->std), state->std);
1057  state->detected_std = msp_standard_std(state->std);
1058 
1059  if (state->std == 9) {
1060  /* AM NICAM mode */
1061  msp_write_dsp(client, 0x0e, 0x7c00);
1062  }
1063 
1064  /* unmute: dispatch sound to scart output, set scart volume */
1065  msp_update_volume(state);
1066 
1067  /* restore ACB */
1068  if (msp_write_dsp(client, 0x13, state->acb))
1069  return -1;
1070 
1071  /* the periodic stereo/SAP check is only relevant for
1072  the 0x20 standard (BTSC) */
1073  if (state->std != 0x20)
1074  continue;
1075 
1076  state->watch_stereo = 1;
1077 
1078  /* monitor tv audio mode, the first time don't wait
1079  in order to get a quick stereo/SAP update */
1080  watch_stereo(client);
1081  while (state->watch_stereo) {
1082  watch_stereo(client);
1083  if (msp_sleep(state, 5000))
1084  goto restart;
1085  }
1086  }
1087  v4l_dbg(1, msp_debug, client, "thread: exit\n");
1088  return 0;
1089 }
1090 
1091 static int msp34xxg_detect_stereo(struct i2c_client *client)
1092 {
1093  struct msp_state *state = to_state(i2c_get_clientdata(client));
1094  int status = msp_read_dem(client, 0x0200);
1095  int is_bilingual = status & 0x100;
1096  int is_stereo = status & 0x40;
1097  int oldrx = state->rxsubchans;
1098 
1099  if (state->mode == MSP_MODE_EXTERN)
1100  return 0;
1101 
1102  state->rxsubchans = 0;
1103  if (is_stereo)
1104  state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1105  else
1106  state->rxsubchans = V4L2_TUNER_SUB_MONO;
1107  if (is_bilingual) {
1108  if (state->std == 0x20)
1109  state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1110  else
1111  state->rxsubchans =
1112  V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1113  }
1114  v4l_dbg(1, msp_debug, client,
1115  "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1116  status, is_stereo, is_bilingual, state->rxsubchans);
1117  return (oldrx != state->rxsubchans);
1118 }
1119 
1120 static void msp34xxg_set_audmode(struct i2c_client *client)
1121 {
1122  struct msp_state *state = to_state(i2c_get_clientdata(client));
1123 
1124  if (state->std == 0x20) {
1125  if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1126  (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1127  state->audmode == V4L2_TUNER_MODE_LANG2)) {
1128  msp_write_dem(client, 0x20, 0x21);
1129  } else {
1130  msp_write_dem(client, 0x20, 0x20);
1131  }
1132  }
1133 
1134  msp34xxg_set_sources(client);
1135 }
1136 
1137 void msp_set_audmode(struct i2c_client *client)
1138 {
1139  struct msp_state *state = to_state(i2c_get_clientdata(client));
1140 
1141  switch (state->opmode) {
1142  case OPMODE_MANUAL:
1143  case OPMODE_AUTODETECT:
1144  msp3400c_set_audmode(client);
1145  break;
1146  case OPMODE_AUTOSELECT:
1147  msp34xxg_set_audmode(client);
1148  break;
1149  }
1150 }
1151 
1152 int msp_detect_stereo(struct i2c_client *client)
1153 {
1154  struct msp_state *state = to_state(i2c_get_clientdata(client));
1155 
1156  switch (state->opmode) {
1157  case OPMODE_MANUAL:
1158  case OPMODE_AUTODETECT:
1159  return msp3400c_detect_stereo(client);
1160  case OPMODE_AUTOSELECT:
1161  return msp34xxg_detect_stereo(client);
1162  }
1163  return 0;
1164 }
1165 
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