drivers/media/i2c/msp3400-kthreads.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Programming the mspx4xx sound processor family
   4  *
   5  * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
   6  */
   7
   8
   9 #include <linux/kernel.h>
  10 #include <linux/module.h>
  11 #include <linux/i2c.h>
  12 #include <linux/freezer.h>
  13 #include <linux/videodev2.h>
  14 #include <media/v4l2-common.h>
  15 #include <media/drv-intf/msp3400.h>
  16 #include <linux/kthread.h>
  17 #include <linux/suspend.h>
  18 #include "msp3400-driver.h"
  19
  20 /* this one uses the automatic sound standard detection of newer msp34xx
  21    chip versions */
  22 static struct {
  23         int retval;
  24         int main, second;
  25         char *name;
  26         v4l2_std_id std;
  27 } msp_stdlist[] = {
  28         { 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL },
  29         { 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL },
  30         { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72),
  31           "4.5/4.72  M Dual FM-Stereo", V4L2_STD_MN },
  32         { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875),
  33           "5.5/5.74  B/G Dual FM-Stereo", V4L2_STD_BG },
  34         { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125),
  35           "6.5/6.25  D/K1 Dual FM-Stereo", V4L2_STD_DK },
  36         { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875),
  37           "6.5/6.74  D/K2 Dual FM-Stereo", V4L2_STD_DK },
  38         { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
  39           "6.5  D/K FM-Mono (HDEV3)", V4L2_STD_DK },
  40         { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875),
  41           "6.5/5.74  D/K3 Dual FM-Stereo", V4L2_STD_DK },
  42         { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85),
  43           "5.5/5.85  B/G NICAM FM", V4L2_STD_BG },
  44         { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
  45           "6.5/5.85  L NICAM AM", V4L2_STD_L },
  46         { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55),
  47           "6.0/6.55  I NICAM FM", V4L2_STD_PAL_I },
  48         { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
  49           "6.5/5.85  D/K NICAM FM", V4L2_STD_DK },
  50         { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
  51           "6.5/5.85  D/K NICAM FM (HDEV2)", V4L2_STD_DK },
  52         { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
  53           "6.5/5.85  D/K NICAM FM (HDEV3)", V4L2_STD_DK },
  54         { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
  55           "4.5  M BTSC-Stereo", V4L2_STD_MTS },
  56         { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
  57           "4.5  M BTSC-Mono + SAP", V4L2_STD_MTS },
  58         { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
  59           "4.5  M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP },
  60         { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7),
  61           "10.7  FM-Stereo Radio", V4L2_STD_ALL },
  62         { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
  63           "6.5  SAT-Mono", V4L2_STD_ALL },
  64         { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20),
  65           "7.02/7.20  SAT-Stereo", V4L2_STD_ALL },
  66         { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2),
  67           "7.2  SAT ADR", V4L2_STD_ALL },
  68         {     -1, 0, 0, NULL, 0 }, /* EOF */
  69 };
  70
  71 static struct msp3400c_init_data_dem {
  72         int fir1[6];
  73         int fir2[6];
  74         int cdo1;
  75         int cdo2;
  76         int ad_cv;
  77         int mode_reg;
  78         int dsp_src;
  79         int dsp_matrix;
  80 } msp3400c_init_data[] = {
  81         {       /* AM (for carrier detect / msp3400) */
  82                 {75, 19, 36, 35, 39, 40},
  83                 {75, 19, 36, 35, 39, 40},
  84                 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
  85                 0x00d0, 0x0500, 0x0020, 0x3000
  86         }, {    /* AM (for carrier detect / msp3410) */
  87                 {-1, -1, -8, 2, 59, 126},
  88                 {-1, -1, -8, 2, 59, 126},
  89                 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
  90                 0x00d0, 0x0100, 0x0020, 0x3000
  91         }, {    /* FM Radio */
  92                 {-8, -8, 4, 6, 78, 107},
  93                 {-8, -8, 4, 6, 78, 107},
  94                 MSP_CARRIER(10.7), MSP_CARRIER(10.7),
  95                 0x00d0, 0x0480, 0x0020, 0x3000
  96         }, {    /* Terrestrial FM-mono + FM-stereo */
  97                 {3, 18, 27, 48, 66, 72},
  98                 {3, 18, 27, 48, 66, 72},
  99                 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
 100                 0x00d0, 0x0480, 0x0030, 0x3000
 101         }, {    /* Sat FM-mono */
 102                 { 1, 9, 14, 24, 33, 37},
 103                 { 3, 18, 27, 48, 66, 72},
 104                 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
 105                 0x00c6, 0x0480, 0x0000, 0x3000
 106         }, {    /* NICAM/FM --  B/G (5.5/5.85), D/K (6.5/5.85) */
 107                 {-2, -8, -10, 10, 50, 86},
 108                 {3, 18, 27, 48, 66, 72},
 109                 MSP_CARRIER(5.5), MSP_CARRIER(5.5),
 110                 0x00d0, 0x0040, 0x0120, 0x3000
 111         }, {    /* NICAM/FM -- I (6.0/6.552) */
 112                 {2, 4, -6, -4, 40, 94},
 113                 {3, 18, 27, 48, 66, 72},
 114                 MSP_CARRIER(6.0), MSP_CARRIER(6.0),
 115                 0x00d0, 0x0040, 0x0120, 0x3000
 116         }, {    /* NICAM/AM -- L (6.5/5.85) */
 117                 {-2, -8, -10, 10, 50, 86},
 118                 {-4, -12, -9, 23, 79, 126},
 119                 MSP_CARRIER(6.5), MSP_CARRIER(6.5),
 120                 0x00c6, 0x0140, 0x0120, 0x7c00
 121         },
 122 };
 123
 124 struct msp3400c_carrier_detect {
 125         int   cdo;
 126         char *name;
 127 };
 128
 129 static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
 130         /* main carrier */
 131         { MSP_CARRIER(4.5),        "4.5   NTSC"                   },
 132         { MSP_CARRIER(5.5),        "5.5   PAL B/G"                },
 133         { MSP_CARRIER(6.0),        "6.0   PAL I"                  },
 134         { MSP_CARRIER(6.5),        "6.5   PAL D/K + SAT + SECAM"  }
 135 };
 136
 137 static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
 138         /* PAL B/G */
 139         { MSP_CARRIER(5.7421875),  "5.742 PAL B/G FM-stereo"     },
 140         { MSP_CARRIER(5.85),       "5.85  PAL B/G NICAM"         }
 141 };
 142
 143 static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
 144         /* PAL SAT / SECAM */
 145         { MSP_CARRIER(5.85),       "5.85  PAL D/K + SECAM NICAM" },
 146         { MSP_CARRIER(6.2578125),  "6.25  PAL D/K1 FM-stereo" },
 147         { MSP_CARRIER(6.7421875),  "6.74  PAL D/K2 FM-stereo" },
 148         { MSP_CARRIER(7.02),       "7.02  PAL SAT FM-stereo s/b" },
 149         { MSP_CARRIER(7.20),       "7.20  PAL SAT FM-stereo s"   },
 150         { MSP_CARRIER(7.38),       "7.38  PAL SAT FM-stereo b"   },
 151 };
 152
 153 /* ------------------------------------------------------------------------ */
 154
 155 const char *msp_standard_std_name(int std)
 156 {
 157         int i;
 158
 159         for (i = 0; msp_stdlist[i].name != NULL; i++)
 160                 if (msp_stdlist[i].retval == std)
 161                         return msp_stdlist[i].name;
 162         return "unknown";
 163 }
 164
 165 static v4l2_std_id msp_standard_std(int std)
 166 {
 167         int i;
 168
 169         for (i = 0; msp_stdlist[i].name != NULL; i++)
 170                 if (msp_stdlist[i].retval == std)
 171                         return msp_stdlist[i].std;
 172         return V4L2_STD_ALL;
 173 }
 174
 175 static void msp_set_source(struct i2c_client *client, u16 src)
 176 {
 177         struct msp_state *state = to_state(i2c_get_clientdata(client));
 178
 179         if (msp_dolby) {
 180                 msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
 181                 msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
 182         } else {
 183                 msp_write_dsp(client, 0x0008, src);
 184                 msp_write_dsp(client, 0x0009, src);
 185         }
 186         msp_write_dsp(client, 0x000a, src);
 187         msp_write_dsp(client, 0x000b, src);
 188         msp_write_dsp(client, 0x000c, src);
 189         if (state->has_scart2_out)
 190                 msp_write_dsp(client, 0x0041, src);
 191 }
 192
 193 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
 194 {
 195         msp_write_dem(client, 0x0093, cdo1 & 0xfff);
 196         msp_write_dem(client, 0x009b, cdo1 >> 12);
 197         msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
 198         msp_write_dem(client, 0x00ab, cdo2 >> 12);
 199         msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
 200 }
 201
 202 void msp3400c_set_mode(struct i2c_client *client, int mode)
 203 {
 204         struct msp_state *state = to_state(i2c_get_clientdata(client));
 205         struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
 206         int tuner = (state->route_in >> 3) & 1;
 207         int i;
 208
 209         dev_dbg_lvl(&client->dev, 1, msp_debug, "set_mode: %d\n", mode);
 210         state->mode = mode;
 211         state->rxsubchans = V4L2_TUNER_SUB_MONO;
 212
 213         msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
 214
 215         for (i = 5; i >= 0; i--)               /* fir 1 */
 216                 msp_write_dem(client, 0x0001, data->fir1[i]);
 217
 218         msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
 219         msp_write_dem(client, 0x0005, 0x0040);
 220         msp_write_dem(client, 0x0005, 0x0000);
 221         for (i = 5; i >= 0; i--)
 222                 msp_write_dem(client, 0x0005, data->fir2[i]);
 223
 224         msp_write_dem(client, 0x0083, data->mode_reg);
 225
 226         msp3400c_set_carrier(client, data->cdo1, data->cdo2);
 227
 228         msp_set_source(client, data->dsp_src);
 229         /* set prescales */
 230
 231         /* volume prescale for SCART (AM mono input) */
 232         msp_write_dsp(client, 0x000d, 0x1900);
 233         msp_write_dsp(client, 0x000e, data->dsp_matrix);
 234         if (state->has_nicam) /* nicam prescale */
 235                 msp_write_dsp(client, 0x0010, 0x5a00);
 236 }
 237
 238 /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
 239    nor do they support stereo BTSC. */
 240 static void msp3400c_set_audmode(struct i2c_client *client)
 241 {
 242         static char *strmode[] = {
 243                 "mono", "stereo", "lang2", "lang1", "lang1+lang2"
 244         };
 245         struct msp_state *state = to_state(i2c_get_clientdata(client));
 246         char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
 247                 strmode[state->audmode] : "unknown";
 248         int src = 0;    /* channel source: FM/AM, nicam or SCART */
 249         int audmode = state->audmode;
 250
 251         if (state->opmode == OPMODE_AUTOSELECT) {
 252                 /* this method would break everything, let's make sure
 253                  * it's never called
 254                  */
 255                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 256                         "set_audmode called with mode=%d instead of set_source (ignored)\n",
 257                         state->audmode);
 258                 return;
 259         }
 260
 261         /* Note: for the C and D revs no NTSC stereo + SAP is possible as
 262            the hardware does not support SAP. So the rxsubchans combination
 263            of STEREO | LANG2 does not occur. */
 264
 265         if (state->mode != MSP_MODE_EXTERN) {
 266                 /* switch to mono if only mono is available */
 267                 if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
 268                         audmode = V4L2_TUNER_MODE_MONO;
 269                 /* if bilingual */
 270                 else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
 271                         /* and mono or stereo, then fallback to lang1 */
 272                         if (audmode == V4L2_TUNER_MODE_MONO ||
 273                             audmode == V4L2_TUNER_MODE_STEREO)
 274                                 audmode = V4L2_TUNER_MODE_LANG1;
 275                 }
 276                 /* if stereo, and audmode is not mono, then switch to stereo */
 277                 else if (audmode != V4L2_TUNER_MODE_MONO)
 278                         audmode = V4L2_TUNER_MODE_STEREO;
 279         }
 280
 281         /* switch demodulator */
 282         switch (state->mode) {
 283         case MSP_MODE_FM_TERRA:
 284                 dev_dbg_lvl(&client->dev, 1, msp_debug, "FM set_audmode: %s\n", modestr);
 285                 switch (audmode) {
 286                 case V4L2_TUNER_MODE_STEREO:
 287                         msp_write_dsp(client, 0x000e, 0x3001);
 288                         break;
 289                 case V4L2_TUNER_MODE_MONO:
 290                 case V4L2_TUNER_MODE_LANG1:
 291                 case V4L2_TUNER_MODE_LANG2:
 292                 case V4L2_TUNER_MODE_LANG1_LANG2:
 293                         msp_write_dsp(client, 0x000e, 0x3000);
 294                         break;
 295                 }
 296                 break;
 297         case MSP_MODE_FM_SAT:
 298                 dev_dbg_lvl(&client->dev, 1, msp_debug, "SAT set_audmode: %s\n", modestr);
 299                 switch (audmode) {
 300                 case V4L2_TUNER_MODE_MONO:
 301                         msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
 302                         break;
 303                 case V4L2_TUNER_MODE_STEREO:
 304                 case V4L2_TUNER_MODE_LANG1_LANG2:
 305                         msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
 306                         break;
 307                 case V4L2_TUNER_MODE_LANG1:
 308                         msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
 309                         break;
 310                 case V4L2_TUNER_MODE_LANG2:
 311                         msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
 312                         break;
 313                 }
 314                 break;
 315         case MSP_MODE_FM_NICAM1:
 316         case MSP_MODE_FM_NICAM2:
 317         case MSP_MODE_AM_NICAM:
 318                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 319                         "NICAM set_audmode: %s\n", modestr);
 320                 if (state->nicam_on)
 321                         src = 0x0100;  /* NICAM */
 322                 break;
 323         case MSP_MODE_BTSC:
 324                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 325                         "BTSC set_audmode: %s\n", modestr);
 326                 break;
 327         case MSP_MODE_EXTERN:
 328                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 329                         "extern set_audmode: %s\n", modestr);
 330                 src = 0x0200;  /* SCART */
 331                 break;
 332         case MSP_MODE_FM_RADIO:
 333                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 334                         "FM-Radio set_audmode: %s\n", modestr);
 335                 break;
 336         default:
 337                 dev_dbg_lvl(&client->dev, 1, msp_debug, "mono set_audmode\n");
 338                 return;
 339         }
 340
 341         /* switch audio */
 342         dev_dbg_lvl(&client->dev, 1, msp_debug, "set audmode %d\n", audmode);
 343         switch (audmode) {
 344         case V4L2_TUNER_MODE_STEREO:
 345         case V4L2_TUNER_MODE_LANG1_LANG2:
 346                 src |= 0x0020;
 347                 break;
 348         case V4L2_TUNER_MODE_MONO:
 349                 if (state->mode == MSP_MODE_AM_NICAM) {
 350                         dev_dbg_lvl(&client->dev, 1, msp_debug, "switching to AM mono\n");
 351                         /* AM mono decoding is handled by tuner, not MSP chip */
 352                         /* SCART switching control register */
 353                         msp_set_scart(client, SCART_MONO, 0);
 354                         src = 0x0200;
 355                         break;
 356                 }
 357                 if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
 358                         src = 0x0030;
 359                 break;
 360         case V4L2_TUNER_MODE_LANG1:
 361                 break;
 362         case V4L2_TUNER_MODE_LANG2:
 363                 src |= 0x0010;
 364                 break;
 365         }
 366         dev_dbg_lvl(&client->dev, 1, msp_debug,
 367                 "set_audmode final source/matrix = 0x%x\n", src);
 368
 369         msp_set_source(client, src);
 370 }
 371
 372 static void msp3400c_print_mode(struct i2c_client *client)
 373 {
 374         struct msp_state *state = to_state(i2c_get_clientdata(client));
 375
 376         if (state->main == state->second)
 377                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 378                         "mono sound carrier: %d.%03d MHz\n",
 379                         state->main / 910000, (state->main / 910) % 1000);
 380         else
 381                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 382                         "main sound carrier: %d.%03d MHz\n",
 383                         state->main / 910000, (state->main / 910) % 1000);
 384         if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
 385                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 386                         "NICAM/FM carrier  : %d.%03d MHz\n",
 387                         state->second / 910000, (state->second/910) % 1000);
 388         if (state->mode == MSP_MODE_AM_NICAM)
 389                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 390                         "NICAM/AM carrier  : %d.%03d MHz\n",
 391                         state->second / 910000, (state->second / 910) % 1000);
 392         if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
 393                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 394                         "FM-stereo carrier : %d.%03d MHz\n",
 395                         state->second / 910000, (state->second / 910) % 1000);
 396         }
 397 }
 398
 399 /* ----------------------------------------------------------------------- */
 400
 401 static int msp3400c_detect_stereo(struct i2c_client *client)
 402 {
 403         struct msp_state *state = to_state(i2c_get_clientdata(client));
 404         int val;
 405         int rxsubchans = state->rxsubchans;
 406         int newnicam = state->nicam_on;
 407         int update = 0;
 408
 409         switch (state->mode) {
 410         case MSP_MODE_FM_TERRA:
 411                 val = msp_read_dsp(client, 0x18);
 412                 if (val > 32767)
 413                         val -= 65536;
 414                 dev_dbg_lvl(&client->dev, 2, msp_debug,
 415                         "stereo detect register: %d\n", val);
 416                 if (val > 8192) {
 417                         rxsubchans = V4L2_TUNER_SUB_STEREO;
 418                 } else if (val < -4096) {
 419                         rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 420                 } else {
 421                         rxsubchans = V4L2_TUNER_SUB_MONO;
 422                 }
 423                 newnicam = 0;
 424                 break;
 425         case MSP_MODE_FM_NICAM1:
 426         case MSP_MODE_FM_NICAM2:
 427         case MSP_MODE_AM_NICAM:
 428                 val = msp_read_dem(client, 0x23);
 429                 dev_dbg_lvl(&client->dev, 2, msp_debug, "nicam sync=%d, mode=%d\n",
 430                         val & 1, (val & 0x1e) >> 1);
 431
 432                 if (val & 1) {
 433                         /* nicam synced */
 434                         switch ((val & 0x1e) >> 1)  {
 435                         case 0:
 436                         case 8:
 437                                 rxsubchans = V4L2_TUNER_SUB_STEREO;
 438                                 break;
 439                         case 1:
 440                         case 9:
 441                                 rxsubchans = V4L2_TUNER_SUB_MONO;
 442                                 break;
 443                         case 2:
 444                         case 10:
 445                                 rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 446                                 break;
 447                         default:
 448                                 rxsubchans = V4L2_TUNER_SUB_MONO;
 449                                 break;
 450                         }
 451                         newnicam = 1;
 452                 } else {
 453                         newnicam = 0;
 454                         rxsubchans = V4L2_TUNER_SUB_MONO;
 455                 }
 456                 break;
 457         }
 458         if (rxsubchans != state->rxsubchans) {
 459                 update = 1;
 460                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 461                         "watch: rxsubchans %02x => %02x\n",
 462                         state->rxsubchans, rxsubchans);
 463                 state->rxsubchans = rxsubchans;
 464         }
 465         if (newnicam != state->nicam_on) {
 466                 update = 1;
 467                 dev_dbg_lvl(&client->dev, 1, msp_debug, "watch: nicam %d => %d\n",
 468                         state->nicam_on, newnicam);
 469                 state->nicam_on = newnicam;
 470         }
 471         return update;
 472 }
 473
 474 /*
 475  * A kernel thread for msp3400 control -- we don't want to block the
 476  * in the ioctl while doing the sound carrier & stereo detect
 477  */
 478 /* stereo/multilang monitoring */
 479 static void watch_stereo(struct i2c_client *client)
 480 {
 481         struct msp_state *state = to_state(i2c_get_clientdata(client));
 482
 483         if (msp_detect_stereo(client))
 484                 msp_set_audmode(client);
 485
 486         if (msp_once)
 487                 state->watch_stereo = 0;
 488 }
 489
 490 int msp3400c_thread(void *data)
 491 {
 492         struct i2c_client *client = data;
 493         struct msp_state *state = to_state(i2c_get_clientdata(client));
 494         struct msp3400c_carrier_detect *cd;
 495         int count, max1, max2, val1, val2, val, i;
 496
 497         dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 daemon started\n");
 498         state->detected_std = V4L2_STD_ALL;
 499         set_freezable();
 500         for (;;) {
 501                 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: sleep\n");
 502                 msp_sleep(state, -1);
 503                 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: wakeup\n");
 504
 505 restart:
 506                 dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
 507                 state->restart = 0;
 508                 if (kthread_should_stop())
 509                         break;
 510
 511                 if (state->radio || MSP_MODE_EXTERN == state->mode) {
 512                         /* no carrier scan, just unmute */
 513                         dev_dbg_lvl(&client->dev, 1, msp_debug,
 514                                 "thread: no carrier scan\n");
 515                         state->scan_in_progress = 0;
 516                         msp_update_volume(state);
 517                         continue;
 518                 }
 519
 520                 /* mute audio */
 521                 state->scan_in_progress = 1;
 522                 msp_update_volume(state);
 523
 524                 msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
 525                 val1 = val2 = 0;
 526                 max1 = max2 = -1;
 527                 state->watch_stereo = 0;
 528                 state->nicam_on = 0;
 529
 530                 /* wait for tuner to settle down after a channel change */
 531                 if (msp_sleep(state, 200))
 532                         goto restart;
 533
 534                 /* carrier detect pass #1 -- main carrier */
 535                 cd = msp3400c_carrier_detect_main;
 536                 count = ARRAY_SIZE(msp3400c_carrier_detect_main);
 537
 538                 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
 539                         /* autodetect doesn't work well with AM ... */
 540                         max1 = 3;
 541                         count = 0;
 542                         dev_dbg_lvl(&client->dev, 1, msp_debug, "AM sound override\n");
 543                 }
 544
 545                 for (i = 0; i < count; i++) {
 546                         msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
 547                         if (msp_sleep(state, 100))
 548                                 goto restart;
 549                         val = msp_read_dsp(client, 0x1b);
 550                         if (val > 32767)
 551                                 val -= 65536;
 552                         if (val1 < val) {
 553                                 val1 = val;
 554                                 max1 = i;
 555                         }
 556                         dev_dbg_lvl(&client->dev, 1, msp_debug,
 557                                 "carrier1 val: %5d / %s\n", val, cd[i].name);
 558                 }
 559
 560                 /* carrier detect pass #2 -- second (stereo) carrier */
 561                 switch (max1) {
 562                 case 1: /* 5.5 */
 563                         cd = msp3400c_carrier_detect_55;
 564                         count = ARRAY_SIZE(msp3400c_carrier_detect_55);
 565                         break;
 566                 case 3: /* 6.5 */
 567                         cd = msp3400c_carrier_detect_65;
 568                         count = ARRAY_SIZE(msp3400c_carrier_detect_65);
 569                         break;
 570                 case 0: /* 4.5 */
 571                 case 2: /* 6.0 */
 572                 default:
 573                         cd = NULL;
 574                         count = 0;
 575                         break;
 576                 }
 577
 578                 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
 579                         /* autodetect doesn't work well with AM ... */
 580                         cd = NULL;
 581                         count = 0;
 582                         max2 = 0;
 583                 }
 584                 for (i = 0; i < count; i++) {
 585                         msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
 586                         if (msp_sleep(state, 100))
 587                                 goto restart;
 588                         val = msp_read_dsp(client, 0x1b);
 589                         if (val > 32767)
 590                                 val -= 65536;
 591                         if (val2 < val) {
 592                                 val2 = val;
 593                                 max2 = i;
 594                         }
 595                         dev_dbg_lvl(&client->dev, 1, msp_debug,
 596                                 "carrier2 val: %5d / %s\n", val, cd[i].name);
 597                 }
 598
 599                 /* program the msp3400 according to the results */
 600                 state->main = msp3400c_carrier_detect_main[max1].cdo;
 601                 switch (max1) {
 602                 case 1: /* 5.5 */
 603                         state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
 604                         if (max2 == 0) {
 605                                 /* B/G FM-stereo */
 606                                 state->second = msp3400c_carrier_detect_55[max2].cdo;
 607                                 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
 608                                 state->watch_stereo = 1;
 609                         } else if (max2 == 1 && state->has_nicam) {
 610                                 /* B/G NICAM */
 611                                 state->second = msp3400c_carrier_detect_55[max2].cdo;
 612                                 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
 613                                 state->nicam_on = 1;
 614                                 state->watch_stereo = 1;
 615                         } else {
 616                                 goto no_second;
 617                         }
 618                         break;
 619                 case 2: /* 6.0 */
 620                         /* PAL I NICAM */
 621                         state->detected_std = V4L2_STD_PAL_I;
 622                         state->second = MSP_CARRIER(6.552);
 623                         msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
 624                         state->nicam_on = 1;
 625                         state->watch_stereo = 1;
 626                         break;
 627                 case 3: /* 6.5 */
 628                         if (max2 == 1 || max2 == 2) {
 629                                 /* D/K FM-stereo */
 630                                 state->second = msp3400c_carrier_detect_65[max2].cdo;
 631                                 msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
 632                                 state->watch_stereo = 1;
 633                                 state->detected_std = V4L2_STD_DK;
 634                         } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
 635                                 /* L NICAM or AM-mono */
 636                                 state->second = msp3400c_carrier_detect_65[max2].cdo;
 637                                 msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
 638                                 state->watch_stereo = 1;
 639                                 state->detected_std = V4L2_STD_L;
 640                         } else if (max2 == 0 && state->has_nicam) {
 641                                 /* D/K NICAM */
 642                                 state->second = msp3400c_carrier_detect_65[max2].cdo;
 643                                 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
 644                                 state->nicam_on = 1;
 645                                 state->watch_stereo = 1;
 646                                 state->detected_std = V4L2_STD_DK;
 647                         } else {
 648                                 goto no_second;
 649                         }
 650                         break;
 651                 case 0: /* 4.5 */
 652                         state->detected_std = V4L2_STD_MN;
 653                         fallthrough;
 654                 default:
 655 no_second:
 656                         state->second = msp3400c_carrier_detect_main[max1].cdo;
 657                         msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
 658                         break;
 659                 }
 660                 msp3400c_set_carrier(client, state->second, state->main);
 661
 662                 /* unmute */
 663                 state->scan_in_progress = 0;
 664                 msp3400c_set_audmode(client);
 665                 msp_update_volume(state);
 666
 667                 if (msp_debug)
 668                         msp3400c_print_mode(client);
 669
 670                 /* monitor tv audio mode, the first time don't wait
 671                    so long to get a quick stereo/bilingual result */
 672                 count = 3;
 673                 while (state->watch_stereo) {
 674                         if (msp_sleep(state, count ? 1000 : 5000))
 675                                 goto restart;
 676                         if (count)
 677                                 count--;
 678                         watch_stereo(client);
 679                 }
 680         }
 681         dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
 682         return 0;
 683 }
 684
 685
 686 int msp3410d_thread(void *data)
 687 {
 688         struct i2c_client *client = data;
 689         struct msp_state *state = to_state(i2c_get_clientdata(client));
 690         int val, i, std, count;
 691
 692         dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3410 daemon started\n");
 693         state->detected_std = V4L2_STD_ALL;
 694         set_freezable();
 695         for (;;) {
 696                 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: sleep\n");
 697                 msp_sleep(state, -1);
 698                 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: wakeup\n");
 699
 700 restart:
 701                 dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
 702                 state->restart = 0;
 703                 if (kthread_should_stop())
 704                         break;
 705
 706                 if (state->mode == MSP_MODE_EXTERN) {
 707                         /* no carrier scan needed, just unmute */
 708                         dev_dbg_lvl(&client->dev, 1, msp_debug,
 709                                 "thread: no carrier scan\n");
 710                         state->scan_in_progress = 0;
 711                         msp_update_volume(state);
 712                         continue;
 713                 }
 714
 715                 /* mute audio */
 716                 state->scan_in_progress = 1;
 717                 msp_update_volume(state);
 718
 719                 /* start autodetect. Note: autodetect is not supported for
 720                    NTSC-M and radio, hence we force the standard in those
 721                    cases. */
 722                 if (state->radio)
 723                         std = 0x40;
 724                 else
 725                         std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
 726                 state->watch_stereo = 0;
 727                 state->nicam_on = 0;
 728
 729                 /* wait for tuner to settle down after a channel change */
 730                 if (msp_sleep(state, 200))
 731                         goto restart;
 732
 733                 if (msp_debug)
 734                         dev_dbg_lvl(&client->dev, 2, msp_debug,
 735                                 "setting standard: %s (0x%04x)\n",
 736                                 msp_standard_std_name(std), std);
 737
 738                 if (std != 1) {
 739                         /* programmed some specific mode */
 740                         val = std;
 741                 } else {
 742                         /* triggered autodetect */
 743                         msp_write_dem(client, 0x20, std);
 744                         for (;;) {
 745                                 if (msp_sleep(state, 100))
 746                                         goto restart;
 747
 748                                 /* check results */
 749                                 val = msp_read_dem(client, 0x7e);
 750                                 if (val < 0x07ff)
 751                                         break;
 752                                 dev_dbg_lvl(&client->dev, 2, msp_debug,
 753                                         "detection still in progress\n");
 754                         }
 755                 }
 756                 for (i = 0; msp_stdlist[i].name != NULL; i++)
 757                         if (msp_stdlist[i].retval == val)
 758                                 break;
 759                 dev_dbg_lvl(&client->dev, 1, msp_debug, "current standard: %s (0x%04x)\n",
 760                         msp_standard_std_name(val), val);
 761                 state->main   = msp_stdlist[i].main;
 762                 state->second = msp_stdlist[i].second;
 763                 state->std = val;
 764                 state->rxsubchans = V4L2_TUNER_SUB_MONO;
 765
 766                 if (msp_amsound && !state->radio &&
 767                     (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
 768                         /* autodetection has failed, let backup */
 769                         dev_dbg_lvl(&client->dev, 1, msp_debug, "autodetection failed, switching to backup standard: %s (0x%04x)\n",
 770                                 msp_stdlist[8].name ?
 771                                         msp_stdlist[8].name : "unknown", val);
 772                         state->std = val = 0x0009;
 773                         msp_write_dem(client, 0x20, val);
 774                 } else {
 775                         state->detected_std = msp_standard_std(state->std);
 776                 }
 777
 778                 /* set stereo */
 779                 switch (val) {
 780                 case 0x0008: /* B/G NICAM */
 781                 case 0x000a: /* I NICAM */
 782                 case 0x000b: /* D/K NICAM */
 783                         if (val == 0x000a)
 784                                 state->mode = MSP_MODE_FM_NICAM2;
 785                         else
 786                                 state->mode = MSP_MODE_FM_NICAM1;
 787                         /* just turn on stereo */
 788                         state->nicam_on = 1;
 789                         state->watch_stereo = 1;
 790                         break;
 791                 case 0x0009:
 792                         state->mode = MSP_MODE_AM_NICAM;
 793                         state->nicam_on = 1;
 794                         state->watch_stereo = 1;
 795                         break;
 796                 case 0x0020: /* BTSC */
 797                         /* The pre-'G' models only have BTSC-mono */
 798                         state->mode = MSP_MODE_BTSC;
 799                         break;
 800                 case 0x0040: /* FM radio */
 801                         state->mode = MSP_MODE_FM_RADIO;
 802                         state->rxsubchans = V4L2_TUNER_SUB_STEREO;
 803                         /* not needed in theory if we have radio, but
 804                            short programming enables carrier mute */
 805                         msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
 806                         msp3400c_set_carrier(client, MSP_CARRIER(10.7),
 807                                             MSP_CARRIER(10.7));
 808                         break;
 809                 case 0x0002:
 810                 case 0x0003:
 811                 case 0x0004:
 812                 case 0x0005:
 813                         state->mode = MSP_MODE_FM_TERRA;
 814                         state->watch_stereo = 1;
 815                         break;
 816                 }
 817
 818                 /* set various prescales */
 819                 msp_write_dsp(client, 0x0d, 0x1900); /* scart */
 820                 msp_write_dsp(client, 0x0e, 0x3000); /* FM */
 821                 if (state->has_nicam)
 822                         msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
 823
 824                 if (state->has_i2s_conf)
 825                         msp_write_dem(client, 0x40, state->i2s_mode);
 826
 827                 /* unmute */
 828                 msp3400c_set_audmode(client);
 829                 state->scan_in_progress = 0;
 830                 msp_update_volume(state);
 831
 832                 /* monitor tv audio mode, the first time don't wait
 833                    so long to get a quick stereo/bilingual result */
 834                 count = 3;
 835                 while (state->watch_stereo) {
 836                         if (msp_sleep(state, count ? 1000 : 5000))
 837                                 goto restart;
 838                         if (count)
 839                                 count--;
 840                         watch_stereo(client);
 841                 }
 842         }
 843         dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
 844         return 0;
 845 }
 846
 847 /* ----------------------------------------------------------------------- */
 848
 849 /* msp34xxG + (autoselect no-thread)
 850  * this one uses both automatic standard detection and automatic sound
 851  * select which are available in the newer G versions
 852  * struct msp: only norm, acb and source are really used in this mode
 853  */
 854
 855 static int msp34xxg_modus(struct i2c_client *client)
 856 {
 857         struct msp_state *state = to_state(i2c_get_clientdata(client));
 858
 859         if (state->radio) {
 860                 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected radio modus\n");
 861                 return 0x0001;
 862         }
 863         if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
 864                 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (EIA-J) modus\n");
 865                 return 0x4001;
 866         }
 867         if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
 868                 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (A2) modus\n");
 869                 return 0x0001;
 870         }
 871         if (state->v4l2_std == V4L2_STD_SECAM_L) {
 872                 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected SECAM-L modus\n");
 873                 return 0x6001;
 874         }
 875         if (state->v4l2_std & V4L2_STD_MN) {
 876                 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (BTSC) modus\n");
 877                 return 0x2001;
 878         }
 879         return 0x7001;
 880 }
 881
 882 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
 883 {
 884         struct msp_state *state = to_state(i2c_get_clientdata(client));
 885         int source, matrix;
 886
 887         switch (state->audmode) {
 888         case V4L2_TUNER_MODE_MONO:
 889                 source = 0; /* mono only */
 890                 matrix = 0x30;
 891                 break;
 892         case V4L2_TUNER_MODE_LANG2:
 893                 source = 4; /* stereo or B */
 894                 matrix = 0x10;
 895                 break;
 896         case V4L2_TUNER_MODE_LANG1_LANG2:
 897                 source = 1; /* stereo or A|B */
 898                 matrix = 0x20;
 899                 break;
 900         case V4L2_TUNER_MODE_LANG1:
 901                 source = 3; /* stereo or A */
 902                 matrix = 0x00;
 903                 break;
 904         case V4L2_TUNER_MODE_STEREO:
 905         default:
 906                 source = 3; /* stereo or A */
 907                 matrix = 0x20;
 908                 break;
 909         }
 910
 911         if (in == MSP_DSP_IN_TUNER)
 912                 source = (source << 8) | 0x20;
 913         /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
 914            instead of 11, 12, 13. So we add one for that msp version. */
 915         else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
 916                 source = ((in + 1) << 8) | matrix;
 917         else
 918                 source = (in << 8) | matrix;
 919
 920         dev_dbg_lvl(&client->dev, 1, msp_debug,
 921                 "set source to %d (0x%x) for output %02x\n", in, source, reg);
 922         msp_write_dsp(client, reg, source);
 923 }
 924
 925 static void msp34xxg_set_sources(struct i2c_client *client)
 926 {
 927         struct msp_state *state = to_state(i2c_get_clientdata(client));
 928         u32 in = state->route_in;
 929
 930         msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
 931         /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
 932         msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
 933         msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
 934         msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
 935         if (state->has_scart2_out)
 936                 msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
 937         msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
 938 }
 939
 940 /* (re-)initialize the msp34xxg */
 941 static void msp34xxg_reset(struct i2c_client *client)
 942 {
 943         struct msp_state *state = to_state(i2c_get_clientdata(client));
 944         int tuner = (state->route_in >> 3) & 1;
 945         int modus;
 946
 947         /* initialize std to 1 (autodetect) to signal that no standard is
 948            selected yet. */
 949         state->std = 1;
 950
 951         msp_reset(client);
 952
 953         if (state->has_i2s_conf)
 954                 msp_write_dem(client, 0x40, state->i2s_mode);
 955
 956         /* step-by-step initialisation, as described in the manual */
 957         modus = msp34xxg_modus(client);
 958         modus |= tuner ? 0x100 : 0;
 959         msp_write_dem(client, 0x30, modus);
 960
 961         /* write the dsps that may have an influence on
 962            standard/audio autodetection right now */
 963         msp34xxg_set_sources(client);
 964
 965         msp_write_dsp(client, 0x0d, 0x1900); /* scart */
 966         msp_write_dsp(client, 0x0e, 0x3000); /* FM */
 967         if (state->has_nicam)
 968                 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
 969
 970         /* set identification threshold. Personally, I
 971          * I set it to a higher value than the default
 972          * of 0x190 to ignore noisy stereo signals.
 973          * this needs tuning. (recommended range 0x00a0-0x03c0)
 974          * 0x7f0 = forced mono mode
 975          *
 976          * a2 threshold for stereo/bilingual.
 977          * Note: this register is part of the Manual/Compatibility mode.
 978          * It is supported by all 'G'-family chips.
 979          */
 980         msp_write_dem(client, 0x22, msp_stereo_thresh);
 981 }
 982
 983 int msp34xxg_thread(void *data)
 984 {
 985         struct i2c_client *client = data;
 986         struct msp_state *state = to_state(i2c_get_clientdata(client));
 987         int val, i;
 988
 989         dev_dbg_lvl(&client->dev, 1, msp_debug, "msp34xxg daemon started\n");
 990         state->detected_std = V4L2_STD_ALL;
 991         set_freezable();
 992         for (;;) {
 993                 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: sleep\n");
 994                 msp_sleep(state, -1);
 995                 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: wakeup\n");
 996
 997 restart:
 998                 dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: restart scan\n");
 999                 state->restart = 0;
1000                 if (kthread_should_stop())
1001                         break;
1002
1003                 if (state->mode == MSP_MODE_EXTERN) {
1004                         /* no carrier scan needed, just unmute */
1005                         dev_dbg_lvl(&client->dev, 1, msp_debug,
1006                                 "thread: no carrier scan\n");
1007                         state->scan_in_progress = 0;
1008                         msp_update_volume(state);
1009                         continue;
1010                 }
1011
1012                 /* setup the chip*/
1013                 msp34xxg_reset(client);
1014                 state->std = state->radio ? 0x40 :
1015                         (state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
1016                 msp_write_dem(client, 0x20, state->std);
1017                 /* start autodetect */
1018                 if (state->std != 1)
1019                         goto unmute;
1020
1021                 /* watch autodetect */
1022                 dev_dbg_lvl(&client->dev, 1, msp_debug,
1023                         "started autodetect, waiting for result\n");
1024                 for (i = 0; i < 10; i++) {
1025                         if (msp_sleep(state, 100))
1026                                 goto restart;
1027
1028                         /* check results */
1029                         val = msp_read_dem(client, 0x7e);
1030                         if (val < 0x07ff) {
1031                                 state->std = val;
1032                                 break;
1033                         }
1034                         dev_dbg_lvl(&client->dev, 2, msp_debug,
1035                                 "detection still in progress\n");
1036                 }
1037                 if (state->std == 1) {
1038                         dev_dbg_lvl(&client->dev, 1, msp_debug,
1039                                 "detection still in progress after 10 tries. giving up.\n");
1040                         continue;
1041                 }
1042
1043 unmute:
1044                 dev_dbg_lvl(&client->dev, 1, msp_debug,
1045                         "detected standard: %s (0x%04x)\n",
1046                         msp_standard_std_name(state->std), state->std);
1047                 state->detected_std = msp_standard_std(state->std);
1048
1049                 if (state->std == 9) {
1050                         /* AM NICAM mode */
1051                         msp_write_dsp(client, 0x0e, 0x7c00);
1052                 }
1053
1054                 /* unmute: dispatch sound to scart output, set scart volume */
1055                 msp_update_volume(state);
1056
1057                 /* restore ACB */
1058                 if (msp_write_dsp(client, 0x13, state->acb))
1059                         return -1;
1060
1061                 /* the periodic stereo/SAP check is only relevant for
1062                    the 0x20 standard (BTSC) */
1063                 if (state->std != 0x20)
1064                         continue;
1065
1066                 state->watch_stereo = 1;
1067
1068                 /* monitor tv audio mode, the first time don't wait
1069                    in order to get a quick stereo/SAP update */
1070                 watch_stereo(client);
1071                 while (state->watch_stereo) {
1072                         watch_stereo(client);
1073                         if (msp_sleep(state, 5000))
1074                                 goto restart;
1075                 }
1076         }
1077         dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
1078         return 0;
1079 }
1080
1081 static int msp34xxg_detect_stereo(struct i2c_client *client)
1082 {
1083         struct msp_state *state = to_state(i2c_get_clientdata(client));
1084         int status = msp_read_dem(client, 0x0200);
1085         int is_bilingual = status & 0x100;
1086         int is_stereo = status & 0x40;
1087         int oldrx = state->rxsubchans;
1088
1089         if (state->mode == MSP_MODE_EXTERN)
1090                 return 0;
1091
1092         state->rxsubchans = 0;
1093         if (is_stereo)
1094                 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
1095         else
1096                 state->rxsubchans = V4L2_TUNER_SUB_MONO;
1097         if (is_bilingual) {
1098                 if (state->std == 0x20)
1099                         state->rxsubchans |= V4L2_TUNER_SUB_SAP;
1100                 else
1101                         state->rxsubchans =
1102                                 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1103         }
1104         dev_dbg_lvl(&client->dev, 1, msp_debug,
1105                 "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
1106                 status, is_stereo, is_bilingual, state->rxsubchans);
1107         return (oldrx != state->rxsubchans);
1108 }
1109
1110 static void msp34xxg_set_audmode(struct i2c_client *client)
1111 {
1112         struct msp_state *state = to_state(i2c_get_clientdata(client));
1113
1114         if (state->std == 0x20) {
1115                if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
1116                    (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
1117                     state->audmode == V4L2_TUNER_MODE_LANG2)) {
1118                         msp_write_dem(client, 0x20, 0x21);
1119                } else {
1120                         msp_write_dem(client, 0x20, 0x20);
1121                }
1122         }
1123
1124         msp34xxg_set_sources(client);
1125 }
1126
1127 void msp_set_audmode(struct i2c_client *client)
1128 {
1129         struct msp_state *state = to_state(i2c_get_clientdata(client));
1130
1131         switch (state->opmode) {
1132         case OPMODE_MANUAL:
1133         case OPMODE_AUTODETECT:
1134                 msp3400c_set_audmode(client);
1135                 break;
1136         case OPMODE_AUTOSELECT:
1137                 msp34xxg_set_audmode(client);
1138                 break;
1139         }
1140 }
1141
1142 int msp_detect_stereo(struct i2c_client *client)
1143 {
1144         struct msp_state *state  = to_state(i2c_get_clientdata(client));
1145
1146         switch (state->opmode) {
1147         case OPMODE_MANUAL:
1148         case OPMODE_AUTODETECT:
1149                 return msp3400c_detect_stereo(client);
1150         case OPMODE_AUTOSELECT:
1151                 return msp34xxg_detect_stereo(client);
1152         }
1153         return 0;
1154 }
1155