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