SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/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 */
  36 static struct {
  37         int retval;
  38         int main, second;
  39         char *name;
  40 } msp_modelist[] = {
  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
  63 static 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
 116 struct msp3400c_carrier_detect {
 117         int   cdo;
 118         char *name;
 119 };
 120
 121 static 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
 129 static 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
 135 static 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
 147 const char *msp_standard_mode_name(int mode)
 148 {
 149         int i;
 150
 151         for (i = 0; msp_modelist[i].name != NULL; i++)
 152                 if (msp_modelist[i].retval == mode)
 153                         return msp_modelist[i].name;
 154         return "unknown";
 155 }
 156
 157 void 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
 166 void 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 /* given a bitmask of VIDEO_SOUND_XXX returns the "best" in the bitmask */
 213 static int msp3400c_best_video_sound(int rxsubchans)
 214 {
 215         if (rxsubchans & V4L2_TUNER_SUB_STEREO)
 216                 return V4L2_TUNER_MODE_STEREO;
 217         if (rxsubchans & V4L2_TUNER_SUB_LANG1)
 218                 return V4L2_TUNER_MODE_LANG1;
 219         if (rxsubchans & V4L2_TUNER_SUB_LANG2)
 220                 return V4L2_TUNER_MODE_LANG2;
 221         return V4L2_TUNER_MODE_MONO;
 222 }
 223
 224 /* turn on/off nicam + stereo */
 225 void msp3400c_setstereo(struct i2c_client *client, int mode)
 226 {
 227         static char *strmode[] = { "0", "mono", "stereo", "3",
 228                 "lang1", "5", "6", "7", "lang2"
 229         };
 230         struct msp_state *state = i2c_get_clientdata(client);
 231         int nicam = 0;          /* channel source: FM/AM or nicam */
 232         int src = 0;
 233
 234         if (state->opmode == OPMODE_AUTOSELECT) {
 235                 /* this method would break everything, let's make sure
 236                  * it's never called
 237                  */
 238                 v4l_dbg(1, client, "setstereo called with mode=%d instead of set_source (ignored)\n",
 239                      mode);
 240                 return;
 241         }
 242
 243         /* switch demodulator */
 244         switch (state->mode) {
 245         case MSP_MODE_FM_TERRA:
 246                 v4l_dbg(1, client, "FM setstereo: %s\n", strmode[mode]);
 247                 msp3400c_setcarrier(client,state->second,state->main);
 248                 switch (mode) {
 249                 case V4L2_TUNER_MODE_STEREO:
 250                         msp_write_dsp(client, 0x000e, 0x3001);
 251                         break;
 252                 case V4L2_TUNER_MODE_MONO:
 253                 case V4L2_TUNER_MODE_LANG1:
 254                 case V4L2_TUNER_MODE_LANG2:
 255                         msp_write_dsp(client, 0x000e, 0x3000);
 256                         break;
 257                 }
 258                 break;
 259         case MSP_MODE_FM_SAT:
 260                 v4l_dbg(1, client, "SAT setstereo: %s\n", strmode[mode]);
 261                 switch (mode) {
 262                 case V4L2_TUNER_MODE_MONO:
 263                         msp3400c_setcarrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
 264                         break;
 265                 case V4L2_TUNER_MODE_STEREO:
 266                         msp3400c_setcarrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
 267                         break;
 268                 case V4L2_TUNER_MODE_LANG1:
 269                         msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
 270                         break;
 271                 case V4L2_TUNER_MODE_LANG2:
 272                         msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
 273                         break;
 274                 }
 275                 break;
 276         case MSP_MODE_FM_NICAM1:
 277         case MSP_MODE_FM_NICAM2:
 278         case MSP_MODE_AM_NICAM:
 279                 v4l_dbg(1, client, "NICAM setstereo: %s\n",strmode[mode]);
 280                 msp3400c_setcarrier(client,state->second,state->main);
 281                 if (state->nicam_on)
 282                         nicam=0x0100;
 283                 break;
 284         case MSP_MODE_BTSC:
 285                 v4l_dbg(1, client, "BTSC setstereo: %s\n",strmode[mode]);
 286                 nicam=0x0300;
 287                 break;
 288         case MSP_MODE_EXTERN:
 289                 v4l_dbg(1, client, "extern setstereo: %s\n",strmode[mode]);
 290                 nicam = 0x0200;
 291                 break;
 292         case MSP_MODE_FM_RADIO:
 293                 v4l_dbg(1, client, "FM-Radio setstereo: %s\n",strmode[mode]);
 294                 break;
 295         default:
 296                 v4l_dbg(1, client, "mono setstereo\n");
 297                 return;
 298         }
 299
 300         /* switch audio */
 301         switch (msp3400c_best_video_sound(mode)) {
 302         case V4L2_TUNER_MODE_STEREO:
 303                 src = 0x0020 | nicam;
 304                 break;
 305         case V4L2_TUNER_MODE_MONO:
 306                 if (state->mode == MSP_MODE_AM_NICAM) {
 307                         v4l_dbg(1, client, "switching to AM mono\n");
 308                         /* AM mono decoding is handled by tuner, not MSP chip */
 309                         /* SCART switching control register */
 310                         msp_set_scart(client, SCART_MONO, 0);
 311                         src = 0x0200;
 312                         break;
 313                 }
 314         case V4L2_TUNER_MODE_LANG1:
 315                 src = 0x0000 | nicam;
 316                 break;
 317         case V4L2_TUNER_MODE_LANG2:
 318                 src = 0x0010 | nicam;
 319                 break;
 320         }
 321         v4l_dbg(1, client, "setstereo final source/matrix = 0x%x\n", src);
 322
 323         if (dolby) {
 324                 msp_write_dsp(client, 0x0008, 0x0520);
 325                 msp_write_dsp(client, 0x0009, 0x0620);
 326                 msp_write_dsp(client, 0x000a, src);
 327                 msp_write_dsp(client, 0x000b, src);
 328         } else {
 329                 msp_write_dsp(client, 0x0008, src);
 330                 msp_write_dsp(client, 0x0009, src);
 331                 msp_write_dsp(client, 0x000a, src);
 332                 msp_write_dsp(client, 0x000b, src);
 333         }
 334 }
 335
 336 static void msp3400c_print_mode(struct i2c_client *client)
 337 {
 338         struct msp_state *state = i2c_get_clientdata(client);
 339
 340         if (state->main == state->second) {
 341                 v4l_dbg(1, client, "mono sound carrier: %d.%03d MHz\n",
 342                        state->main / 910000, (state->main / 910) % 1000);
 343         } else {
 344                 v4l_dbg(1, client, "main sound carrier: %d.%03d MHz\n",
 345                        state->main / 910000, (state->main / 910) % 1000);
 346         }
 347         if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
 348                 v4l_dbg(1, client, "NICAM/FM carrier  : %d.%03d MHz\n",
 349                        state->second / 910000, (state->second/910) % 1000);
 350         if (state->mode == MSP_MODE_AM_NICAM)
 351                 v4l_dbg(1, client, "NICAM/AM carrier  : %d.%03d MHz\n",
 352                        state->second / 910000, (state->second / 910) % 1000);
 353         if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
 354                 v4l_dbg(1, client, "FM-stereo carrier : %d.%03d MHz\n",
 355                        state->second / 910000, (state->second / 910) % 1000);
 356         }
 357 }
 358
 359 /* ----------------------------------------------------------------------- */
 360
 361 int autodetect_stereo(struct i2c_client *client)
 362 {
 363         struct msp_state *state = i2c_get_clientdata(client);
 364         int val;
 365         int rxsubchans = state->rxsubchans;
 366         int newnicam   = state->nicam_on;
 367         int update = 0;
 368
 369         switch (state->mode) {
 370         case MSP_MODE_FM_TERRA:
 371                 val = msp_read_dsp(client, 0x18);
 372                 if (val > 32767)
 373                         val -= 65536;
 374                 v4l_dbg(2, client, "stereo detect register: %d\n", val);
 375                 if (val > 4096) {
 376                         rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
 377                 } else if (val < -4096) {
 378                         rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 379                 } else {
 380                         rxsubchans = V4L2_TUNER_SUB_MONO;
 381                 }
 382                 newnicam = 0;
 383                 break;
 384         case MSP_MODE_FM_NICAM1:
 385         case MSP_MODE_FM_NICAM2:
 386         case MSP_MODE_AM_NICAM:
 387                 val = msp_read_dem(client, 0x23);
 388                 v4l_dbg(2, client, "nicam sync=%d, mode=%d\n",
 389                         val & 1, (val & 0x1e) >> 1);
 390
 391                 if (val & 1) {
 392                         /* nicam synced */
 393                         switch ((val & 0x1e) >> 1)  {
 394                         case 0:
 395                         case 8:
 396                                 rxsubchans = V4L2_TUNER_SUB_STEREO;
 397                                 break;
 398                         case 1:
 399                         case 9:
 400                                 rxsubchans = V4L2_TUNER_SUB_MONO
 401                                         | V4L2_TUNER_SUB_LANG1;
 402                                 break;
 403                         case 2:
 404                         case 10:
 405                                 rxsubchans = V4L2_TUNER_SUB_MONO
 406                                         | V4L2_TUNER_SUB_LANG1
 407                                         | V4L2_TUNER_SUB_LANG2;
 408                                 break;
 409                         default:
 410                                 rxsubchans = V4L2_TUNER_SUB_MONO;
 411                                 break;
 412                         }
 413                         newnicam = 1;
 414                 } else {
 415                         newnicam = 0;
 416                         rxsubchans = V4L2_TUNER_SUB_MONO;
 417                 }
 418                 break;
 419         case MSP_MODE_BTSC:
 420                 val = msp_read_dem(client, 0x200);
 421                 v4l_dbg(2, client, "status=0x%x (pri=%s, sec=%s, %s%s%s)\n",
 422                         val,
 423                         (val & 0x0002) ? "no"     : "yes",
 424                         (val & 0x0004) ? "no"     : "yes",
 425                         (val & 0x0040) ? "stereo" : "mono",
 426                         (val & 0x0080) ? ", nicam 2nd mono" : "",
 427                         (val & 0x0100) ? ", bilingual/SAP"  : "");
 428                 rxsubchans = V4L2_TUNER_SUB_MONO;
 429                 if (val & 0x0040) rxsubchans |= V4L2_TUNER_SUB_STEREO;
 430                 if (val & 0x0100) rxsubchans |= V4L2_TUNER_SUB_LANG1;
 431                 break;
 432         }
 433         if (rxsubchans != state->rxsubchans) {
 434                 update = 1;
 435                 v4l_dbg(1, client, "watch: rxsubchans %d => %d\n",
 436                         state->rxsubchans,rxsubchans);
 437                 state->rxsubchans = rxsubchans;
 438         }
 439         if (newnicam != state->nicam_on) {
 440                 update = 1;
 441                 v4l_dbg(1, client, "watch: nicam %d => %d\n",
 442                         state->nicam_on,newnicam);
 443                 state->nicam_on = newnicam;
 444         }
 445         return update;
 446 }
 447
 448 /*
 449  * A kernel thread for msp3400 control -- we don't want to block the
 450  * in the ioctl while doing the sound carrier & stereo detect
 451  */
 452 /* stereo/multilang monitoring */
 453 static void watch_stereo(struct i2c_client *client)
 454 {
 455         struct msp_state *state = i2c_get_clientdata(client);
 456
 457         if (autodetect_stereo(client)) {
 458                 if (state->stereo & V4L2_TUNER_MODE_STEREO)
 459                         msp3400c_setstereo(client, V4L2_TUNER_MODE_STEREO);
 460                 else if (state->stereo & VIDEO_SOUND_LANG1)
 461                         msp3400c_setstereo(client, V4L2_TUNER_MODE_LANG1);
 462                 else
 463                         msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
 464         }
 465
 466         if (once)
 467                 state->watch_stereo = 0;
 468 }
 469
 470 int msp3400c_thread(void *data)
 471 {
 472         struct i2c_client *client = data;
 473         struct msp_state *state = i2c_get_clientdata(client);
 474         struct msp3400c_carrier_detect *cd;
 475         int count, max1,max2,val1,val2, val,this;
 476
 477
 478         v4l_dbg(1, client, "msp3400 daemon started\n");
 479         for (;;) {
 480                 v4l_dbg(2, client, "msp3400 thread: sleep\n");
 481                 msp_sleep(state, -1);
 482                 v4l_dbg(2, client, "msp3400 thread: wakeup\n");
 483
 484         restart:
 485                 v4l_dbg(1, client, "thread: restart scan\n");
 486                 state->restart = 0;
 487                 if (kthread_should_stop())
 488                         break;
 489
 490                 if (state->radio || MSP_MODE_EXTERN == state->mode) {
 491                         /* no carrier scan, just unmute */
 492                         v4l_dbg(1, client, "thread: no carrier scan\n");
 493                         msp_set_audio(client);
 494                         continue;
 495                 }
 496
 497                 /* mute */
 498                 msp_set_mute(client);
 499                 msp3400c_setmode(client, MSP_MODE_AM_DETECT /* +1 */ );
 500                 val1 = val2 = 0;
 501                 max1 = max2 = -1;
 502                 state->watch_stereo = 0;
 503
 504                 /* some time for the tuner to sync */
 505                 if (msp_sleep(state,200))
 506                         goto restart;
 507
 508                 /* carrier detect pass #1 -- main carrier */
 509                 cd = msp3400c_carrier_detect_main;
 510                 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
 511
 512                 if (amsound && (state->std & V4L2_STD_SECAM)) {
 513                         /* autodetect doesn't work well with AM ... */
 514                         max1 = 3;
 515                         count = 0;
 516                         v4l_dbg(1, client, "AM sound override\n");
 517                 }
 518
 519                 for (this = 0; this < count; this++) {
 520                         msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
 521                         if (msp_sleep(state,100))
 522                                 goto restart;
 523                         val = msp_read_dsp(client, 0x1b);
 524                         if (val > 32767)
 525                                 val -= 65536;
 526                         if (val1 < val)
 527                                 val1 = val, max1 = this;
 528                         v4l_dbg(1, client, "carrier1 val: %5d / %s\n", val,cd[this].name);
 529                 }
 530
 531                 /* carrier detect pass #2 -- second (stereo) carrier */
 532                 switch (max1) {
 533                 case 1: /* 5.5 */
 534                         cd = msp3400c_carrier_detect_55;
 535                         count = ARRAY_SIZE(msp3400c_carrier_detect_55);
 536                         break;
 537                 case 3: /* 6.5 */
 538                         cd = msp3400c_carrier_detect_65;
 539                         count = ARRAY_SIZE(msp3400c_carrier_detect_65);
 540                         break;
 541                 case 0: /* 4.5 */
 542                 case 2: /* 6.0 */
 543                 default:
 544                         cd = NULL;
 545                         count = 0;
 546                         break;
 547                 }
 548
 549                 if (amsound && (state->std & V4L2_STD_SECAM)) {
 550                         /* autodetect doesn't work well with AM ... */
 551                         cd = NULL;
 552                         count = 0;
 553                         max2 = 0;
 554                 }
 555                 for (this = 0; this < count; this++) {
 556                         msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
 557                         if (msp_sleep(state,100))
 558                                 goto restart;
 559                         val = msp_read_dsp(client, 0x1b);
 560                         if (val > 32767)
 561                                 val -= 65536;
 562                         if (val2 < val)
 563                                 val2 = val, max2 = this;
 564                         v4l_dbg(1, client, "carrier2 val: %5d / %s\n", val,cd[this].name);
 565                 }
 566
 567                 /* program the msp3400 according to the results */
 568                 state->main   = msp3400c_carrier_detect_main[max1].cdo;
 569                 switch (max1) {
 570                 case 1: /* 5.5 */
 571                         if (max2 == 0) {
 572                                 /* B/G FM-stereo */
 573                                 state->second = msp3400c_carrier_detect_55[max2].cdo;
 574                                 msp3400c_setmode(client, MSP_MODE_FM_TERRA);
 575                                 state->nicam_on = 0;
 576                                 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
 577                                 state->watch_stereo = 1;
 578                         } else if (max2 == 1 && state->has_nicam) {
 579                                 /* B/G NICAM */
 580                                 state->second = msp3400c_carrier_detect_55[max2].cdo;
 581                                 msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
 582                                 state->nicam_on = 1;
 583                                 msp3400c_setcarrier(client, state->second, state->main);
 584                                 state->watch_stereo = 1;
 585                         } else {
 586                                 goto no_second;
 587                         }
 588                         break;
 589                 case 2: /* 6.0 */
 590                         /* PAL I NICAM */
 591                         state->second = MSP_CARRIER(6.552);
 592                         msp3400c_setmode(client, MSP_MODE_FM_NICAM2);
 593                         state->nicam_on = 1;
 594                         msp3400c_setcarrier(client, state->second, state->main);
 595                         state->watch_stereo = 1;
 596                         break;
 597                 case 3: /* 6.5 */
 598                         if (max2 == 1 || max2 == 2) {
 599                                 /* D/K FM-stereo */
 600                                 state->second = msp3400c_carrier_detect_65[max2].cdo;
 601                                 msp3400c_setmode(client, MSP_MODE_FM_TERRA);
 602                                 state->nicam_on = 0;
 603                                 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
 604                                 state->watch_stereo = 1;
 605                         } else if (max2 == 0 && (state->std & V4L2_STD_SECAM)) {
 606                                 /* L NICAM or AM-mono */
 607                                 state->second = msp3400c_carrier_detect_65[max2].cdo;
 608                                 msp3400c_setmode(client, MSP_MODE_AM_NICAM);
 609                                 state->nicam_on = 0;
 610                                 msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
 611                                 msp3400c_setcarrier(client, state->second, state->main);
 612                                 /* volume prescale for SCART (AM mono input) */
 613                                 msp_write_dsp(client, 0x000d, 0x1900);
 614                                 state->watch_stereo = 1;
 615                         } else if (max2 == 0 && state->has_nicam) {
 616                                 /* D/K NICAM */
 617                                 state->second = msp3400c_carrier_detect_65[max2].cdo;
 618                                 msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
 619                                 state->nicam_on = 1;
 620                                 msp3400c_setcarrier(client, state->second, state->main);
 621                                 state->watch_stereo = 1;
 622                         } else {
 623                                 goto no_second;
 624                         }
 625                         break;
 626                 case 0: /* 4.5 */
 627                 default:
 628                 no_second:
 629                         state->second = msp3400c_carrier_detect_main[max1].cdo;
 630                         msp3400c_setmode(client, MSP_MODE_FM_TERRA);
 631                         state->nicam_on = 0;
 632                         msp3400c_setcarrier(client, state->second, state->main);
 633                         state->rxsubchans = V4L2_TUNER_SUB_MONO;
 634                         msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
 635                         break;
 636                 }
 637
 638                 /* unmute */
 639                 msp_set_audio(client);
 640
 641                 if (debug)
 642                         msp3400c_print_mode(client);
 643
 644                 /* monitor tv audio mode */
 645                 while (state->watch_stereo) {
 646                         if (msp_sleep(state,5000))
 647                                 goto restart;
 648                         watch_stereo(client);
 649                 }
 650         }
 651         v4l_dbg(1, client, "thread: exit\n");
 652         return 0;
 653 }
 654
 655
 656 int msp3410d_thread(void *data)
 657 {
 658         struct i2c_client *client = data;
 659         struct msp_state *state = i2c_get_clientdata(client);
 660         int mode,val,i,std;
 661
 662         v4l_dbg(1, client, "msp3410 daemon started\n");
 663
 664         for (;;) {
 665                 v4l_dbg(2, client, "msp3410 thread: sleep\n");
 666                 msp_sleep(state,-1);
 667                 v4l_dbg(2, client, "msp3410 thread: wakeup\n");
 668
 669         restart:
 670                 v4l_dbg(1, client, "thread: restart scan\n");
 671                 state->restart = 0;
 672                 if (kthread_should_stop())
 673                         break;
 674
 675                 if (state->mode == MSP_MODE_EXTERN) {
 676                         /* no carrier scan needed, just unmute */
 677                         v4l_dbg(1, client, "thread: no carrier scan\n");
 678                         msp_set_audio(client);
 679                         continue;
 680                 }
 681
 682                 /* put into sane state (and mute) */
 683                 msp_reset(client);
 684
 685                 /* some time for the tuner to sync */
 686                 if (msp_sleep(state,200))
 687                         goto restart;
 688
 689                 /* start autodetect */
 690                 mode = msp_modus(client);
 691                 std = (state->std & V4L2_STD_NTSC) ? 0x20 : 1;
 692                 msp_write_dem(client, 0x30, mode);
 693                 msp_write_dem(client, 0x20, std);
 694                 state->watch_stereo = 0;
 695
 696                 if (debug)
 697                         v4l_dbg(1, client, "setting mode: %s (0x%04x)\n",
 698                                msp_standard_mode_name(std), std);
 699
 700                 if (std != 1) {
 701                         /* programmed some specific mode */
 702                         val = std;
 703                 } else {
 704                         /* triggered autodetect */
 705                         for (;;) {
 706                                 if (msp_sleep(state,100))
 707                                         goto restart;
 708
 709                                 /* check results */
 710                                 val = msp_read_dem(client, 0x7e);
 711                                 if (val < 0x07ff)
 712                                         break;
 713                                 v4l_dbg(1, client, "detection still in progress\n");
 714                         }
 715                 }
 716                 for (i = 0; msp_modelist[i].name != NULL; i++)
 717                         if (msp_modelist[i].retval == val)
 718                                 break;
 719                 v4l_dbg(1, client, "current mode: %s (0x%04x)\n",
 720                         msp_standard_mode_name(val), val);
 721                 state->main   = msp_modelist[i].main;
 722                 state->second = msp_modelist[i].second;
 723
 724                 if (amsound && (state->std & V4L2_STD_SECAM) && (val != 0x0009)) {
 725                         /* autodetection has failed, let backup */
 726                         v4l_dbg(1, client, "autodetection failed,"
 727                                 " switching to backup mode: %s (0x%04x)\n",
 728                                 msp_modelist[8].name ? msp_modelist[8].name : "unknown",val);
 729                         val = 0x0009;
 730                         msp_write_dem(client, 0x20, val);
 731                 }
 732
 733                 /* set various prescales */
 734                 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
 735                 msp_write_dsp(client, 0x0e, 0x2403); /* FM */
 736                 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
 737
 738                 /* set stereo */
 739                 switch (val) {
 740                 case 0x0008: /* B/G NICAM */
 741                 case 0x000a: /* I NICAM */
 742                         if (val == 0x0008)
 743                                 state->mode = MSP_MODE_FM_NICAM1;
 744                         else
 745                                 state->mode = MSP_MODE_FM_NICAM2;
 746                         /* just turn on stereo */
 747                         state->rxsubchans = V4L2_TUNER_SUB_STEREO;
 748                         state->nicam_on = 1;
 749                         state->watch_stereo = 1;
 750                         msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO);
 751                         break;
 752                 case 0x0009:
 753                         state->mode = MSP_MODE_AM_NICAM;
 754                         state->rxsubchans = V4L2_TUNER_SUB_MONO;
 755                         state->nicam_on = 1;
 756                         msp3400c_setstereo(client,V4L2_TUNER_MODE_MONO);
 757                         state->watch_stereo = 1;
 758                         break;
 759                 case 0x0020: /* BTSC */
 760                         /* just turn on stereo */
 761                         state->mode = MSP_MODE_BTSC;
 762                         state->rxsubchans = V4L2_TUNER_SUB_STEREO;
 763                         state->nicam_on = 0;
 764                         state->watch_stereo = 1;
 765                         msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO);
 766                         break;
 767                 case 0x0040: /* FM radio */
 768                         state->mode = MSP_MODE_FM_RADIO;
 769                         state->rxsubchans = V4L2_TUNER_SUB_STEREO;
 770                         state->audmode = V4L2_TUNER_MODE_STEREO;
 771                         state->nicam_on = 0;
 772                         state->watch_stereo = 0;
 773                         /* not needed in theory if we have radio, but
 774                            short programming enables carrier mute */
 775                         msp3400c_setmode(client,MSP_MODE_FM_RADIO);
 776                         msp3400c_setcarrier(client, MSP_CARRIER(10.7),
 777                                             MSP_CARRIER(10.7));
 778                         /* scart routing */
 779                         msp_set_scart(client,SCART_IN2,0);
 780                         /* msp34xx does radio decoding */
 781                         msp_write_dsp(client, 0x08, 0x0020);
 782                         msp_write_dsp(client, 0x09, 0x0020);
 783                         msp_write_dsp(client, 0x0b, 0x0020);
 784                         break;
 785                 case 0x0003:
 786                 case 0x0004:
 787                 case 0x0005:
 788                         state->mode   = MSP_MODE_FM_TERRA;
 789                         state->rxsubchans = V4L2_TUNER_SUB_MONO;
 790                         state->audmode = V4L2_TUNER_MODE_MONO;
 791                         state->nicam_on = 0;
 792                         state->watch_stereo = 1;
 793                         break;
 794                 }
 795
 796                 /* unmute, restore misc registers */
 797                 msp_set_audio(client);
 798                 msp_write_dsp(client, 0x13, state->acb);
 799                 msp_write_dem(client, 0x40, state->i2s_mode);
 800
 801                 /* monitor tv audio mode */
 802                 while (state->watch_stereo) {
 803                         if (msp_sleep(state,5000))
 804                                 goto restart;
 805                         watch_stereo(client);
 806                 }
 807         }
 808         v4l_dbg(1, client, "thread: exit\n");
 809         return 0;
 810 }
 811
 812 /* ----------------------------------------------------------------------- */
 813
 814 /* msp34xxG + (autoselect no-thread)                                          */
 815 /* this one uses both automatic standard detection and automatic sound     */
 816 /* select which are available in the newer G versions                      */
 817 /* struct msp: only norm, acb and source are really used in this mode      */
 818
 819 /* set the same 'source' for the loudspeaker, scart and quasi-peak detector
 820  * the value for source is the same as bit 15:8 of DSP registers 0x08,
 821  * 0x0a and 0x0c: 0=mono, 1=stereo or A|B, 2=SCART, 3=stereo or A, 4=stereo or B
 822  *
 823  * this function replaces msp3400c_setstereo
 824  */
 825 static void msp34xxg_set_source(struct i2c_client *client, int source)
 826 {
 827         struct msp_state *state = i2c_get_clientdata(client);
 828
 829         /* fix matrix mode to stereo and let the msp choose what
 830          * to output according to 'source', as recommended
 831          * for MONO (source==0) downmixing set bit[7:0] to 0x30
 832          */
 833         int value = (source & 0x07) << 8 | (source == 0 ? 0x30 : 0x20);
 834
 835         v4l_dbg(1, client, "set source to %d (0x%x)\n", source, value);
 836         /* Loudspeaker Output */
 837         msp_write_dsp(client, 0x08, value);
 838         /* SCART1 DA Output */
 839         msp_write_dsp(client, 0x0a, value);
 840         /* Quasi-peak detector */
 841         msp_write_dsp(client, 0x0c, value);
 842         /*
 843          * set identification threshold. Personally, I
 844          * I set it to a higher value that the default
 845          * of 0x190 to ignore noisy stereo signals.
 846          * this needs tuning. (recommended range 0x00a0-0x03c0)
 847          * 0x7f0 = forced mono mode
 848          */
 849         /* a2 threshold for stereo/bilingual */
 850         msp_write_dem(client, 0x22, stereo_threshold);
 851         state->source = source;
 852 }
 853
 854 /* (re-)initialize the msp34xxg, according to the current norm in state->norm
 855  * return 0 if it worked, -1 if it failed
 856  */
 857 static int msp34xxg_reset(struct i2c_client *client)
 858 {
 859         struct msp_state *state = i2c_get_clientdata(client);
 860         int modus, std;
 861
 862         if (msp_reset(client))
 863                 return -1;
 864
 865         /* make sure that input/output is muted (paranoid mode) */
 866         /* ACB, mute DSP input, mute SCART 1 */
 867         if (msp_write_dsp(client, 0x13, 0x0f20))
 868                 return -1;
 869
 870         msp_write_dem(client, 0x40, state->i2s_mode);
 871
 872         /* step-by-step initialisation, as described in the manual */
 873         modus = msp_modus(client);
 874         if (state->radio)
 875                 std = 0x40;
 876         else
 877                 std = (state->std & V4L2_STD_NTSC) ? 0x20 : 1;
 878         modus &= ~0x03; /* STATUS_CHANGE = 0 */
 879         modus |= 0x01;  /* AUTOMATIC_SOUND_DETECTION = 1 */
 880         if (msp_write_dem(client, 0x30, modus))
 881                 return -1;
 882         if (msp_write_dem(client, 0x20, std))
 883                 return -1;
 884
 885         /* write the dsps that may have an influence on
 886            standard/audio autodetection right now */
 887         msp34xxg_set_source(client, state->source);
 888
 889         /* AM/FM Prescale [15:8] 75khz deviation */
 890         if (msp_write_dsp(client, 0x0e, 0x3000))
 891                 return -1;
 892
 893         /* NICAM Prescale 9db gain (as recommended) */
 894         if (msp_write_dsp(client, 0x10, 0x5a00))
 895                 return -1;
 896
 897         return 0;
 898 }
 899
 900 int msp34xxg_thread(void *data)
 901 {
 902         struct i2c_client *client = data;
 903         struct msp_state *state = i2c_get_clientdata(client);
 904         int val, std, i;
 905
 906         v4l_dbg(1, client, "msp34xxg daemon started\n");
 907
 908         state->source = 1; /* default */
 909         for (;;) {
 910                 v4l_dbg(2, client, "msp34xxg thread: sleep\n");
 911                 msp_sleep(state, -1);
 912                 v4l_dbg(2, client, "msp34xxg thread: wakeup\n");
 913
 914         restart:
 915                 v4l_dbg(1, client, "thread: restart scan\n");
 916                 state->restart = 0;
 917                 if (kthread_should_stop())
 918                         break;
 919
 920                 /* setup the chip*/
 921                 msp34xxg_reset(client);
 922                 std = standard;
 923                 if (std != 0x01)
 924                         goto unmute;
 925
 926                 /* watch autodetect */
 927                 v4l_dbg(1, client, "triggered autodetect, waiting for result\n");
 928                 for (i = 0; i < 10; i++) {
 929                         if (msp_sleep(state, 100))
 930                                 goto restart;
 931
 932                         /* check results */
 933                         val = msp_read_dem(client, 0x7e);
 934                         if (val < 0x07ff) {
 935                                 std = val;
 936                                 break;
 937                         }
 938                         v4l_dbg(2, client, "detection still in progress\n");
 939                 }
 940                 if (std == 1) {
 941                         v4l_dbg(1, client, "detection still in progress after 10 tries. giving up.\n");
 942                         continue;
 943                 }
 944
 945         unmute:
 946                 state->mode = std;
 947                 v4l_dbg(1, client, "current mode: %s (0x%04x)\n",
 948                         msp_standard_mode_name(std), std);
 949
 950                 /* unmute: dispatch sound to scart output, set scart volume */
 951                 msp_set_audio(client);
 952
 953                 /* restore ACB */
 954                 if (msp_write_dsp(client, 0x13, state->acb))
 955                         return -1;
 956
 957                 msp_write_dem(client, 0x40, state->i2s_mode);
 958         }
 959         v4l_dbg(1, client, "thread: exit\n");
 960         return 0;
 961 }
 962
 963 void msp34xxg_detect_stereo(struct i2c_client *client)
 964 {
 965         struct msp_state *state = i2c_get_clientdata(client);
 966
 967         int status = msp_read_dem(client, 0x0200);
 968         int is_bilingual = status & 0x100;
 969         int is_stereo = status & 0x40;
 970
 971         state->rxsubchans = 0;
 972         if (is_stereo)
 973                 state->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 974         else
 975                 state->rxsubchans |= V4L2_TUNER_SUB_MONO;
 976         if (is_bilingual) {
 977                 state->rxsubchans |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 978                 /* I'm supposed to check whether it's SAP or not
 979                  * and set only LANG2/SAP in this case. Yet, the MSP
 980                  * does a lot of work to hide this and handle everything
 981                  * the same way. I don't want to work around it so unless
 982                  * this is a problem, I'll handle SAP just like lang1/lang2.
 983                  */
 984         }
 985         v4l_dbg(1, client, "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
 986                 status, is_stereo, is_bilingual, state->rxsubchans);
 987 }
 988
 989 void msp34xxg_set_audmode(struct i2c_client *client, int audmode)
 990 {
 991         struct msp_state *state = i2c_get_clientdata(client);
 992         int source;
 993
 994         switch (audmode) {
 995         case V4L2_TUNER_MODE_MONO:
 996                 source = 0; /* mono only */
 997                 break;
 998         case V4L2_TUNER_MODE_STEREO:
 999                 source = 1; /* stereo or A|B, see comment in msp34xxg_get_v4l2_stereo() */
1000                 /* problem: that could also mean 2 (scart input) */
1001                 break;
1002         case V4L2_TUNER_MODE_LANG1:
1003                 source = 3; /* stereo or A */
1004                 break;
1005         case V4L2_TUNER_MODE_LANG2:
1006                 source = 4; /* stereo or B */
1007                 break;
1008         default:
1009                 audmode = 0;
1010                 source  = 1;
1011                 break;
1012         }
1013         state->audmode = audmode;
1014         msp34xxg_set_source(client, source);
1015 }
1016