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