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, max1 = i; 554 dev_dbg_lvl(&client->dev, 1, msp_debug, 555 "carrier1 val: %5d / %s\n", val, cd[i].name); 556 } 557 558 /* carrier detect pass #2 -- second (stereo) carrier */ 559 switch (max1) { 560 case 1: /* 5.5 */ 561 cd = msp3400c_carrier_detect_55; 562 count = ARRAY_SIZE(msp3400c_carrier_detect_55); 563 break; 564 case 3: /* 6.5 */ 565 cd = msp3400c_carrier_detect_65; 566 count = ARRAY_SIZE(msp3400c_carrier_detect_65); 567 break; 568 case 0: /* 4.5 */ 569 case 2: /* 6.0 */ 570 default: 571 cd = NULL; 572 count = 0; 573 break; 574 } 575 576 if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) { 577 /* autodetect doesn't work well with AM ... */ 578 cd = NULL; 579 count = 0; 580 max2 = 0; 581 } 582 for (i = 0; i < count; i++) { 583 msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo); 584 if (msp_sleep(state, 100)) 585 goto restart; 586 val = msp_read_dsp(client, 0x1b); 587 if (val > 32767) 588 val -= 65536; 589 if (val2 < val) 590 val2 = val, max2 = i; 591 dev_dbg_lvl(&client->dev, 1, msp_debug, 592 "carrier2 val: %5d / %s\n", val, cd[i].name); 593 } 594 595 /* program the msp3400 according to the results */ 596 state->main = msp3400c_carrier_detect_main[max1].cdo; 597 switch (max1) { 598 case 1: /* 5.5 */ 599 state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H; 600 if (max2 == 0) { 601 /* B/G FM-stereo */ 602 state->second = msp3400c_carrier_detect_55[max2].cdo; 603 msp3400c_set_mode(client, MSP_MODE_FM_TERRA); 604 state->watch_stereo = 1; 605 } else if (max2 == 1 && state->has_nicam) { 606 /* B/G NICAM */ 607 state->second = msp3400c_carrier_detect_55[max2].cdo; 608 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1); 609 state->nicam_on = 1; 610 state->watch_stereo = 1; 611 } else { 612 goto no_second; 613 } 614 break; 615 case 2: /* 6.0 */ 616 /* PAL I NICAM */ 617 state->detected_std = V4L2_STD_PAL_I; 618 state->second = MSP_CARRIER(6.552); 619 msp3400c_set_mode(client, MSP_MODE_FM_NICAM2); 620 state->nicam_on = 1; 621 state->watch_stereo = 1; 622 break; 623 case 3: /* 6.5 */ 624 if (max2 == 1 || max2 == 2) { 625 /* D/K FM-stereo */ 626 state->second = msp3400c_carrier_detect_65[max2].cdo; 627 msp3400c_set_mode(client, MSP_MODE_FM_TERRA); 628 state->watch_stereo = 1; 629 state->detected_std = V4L2_STD_DK; 630 } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) { 631 /* L NICAM or AM-mono */ 632 state->second = msp3400c_carrier_detect_65[max2].cdo; 633 msp3400c_set_mode(client, MSP_MODE_AM_NICAM); 634 state->watch_stereo = 1; 635 state->detected_std = V4L2_STD_L; 636 } else if (max2 == 0 && state->has_nicam) { 637 /* D/K NICAM */ 638 state->second = msp3400c_carrier_detect_65[max2].cdo; 639 msp3400c_set_mode(client, MSP_MODE_FM_NICAM1); 640 state->nicam_on = 1; 641 state->watch_stereo = 1; 642 state->detected_std = V4L2_STD_DK; 643 } else { 644 goto no_second; 645 } 646 break; 647 case 0: /* 4.5 */ 648 state->detected_std = V4L2_STD_MN; 649 fallthrough; 650 default: 651 no_second: 652 state->second = msp3400c_carrier_detect_main[max1].cdo; 653 msp3400c_set_mode(client, MSP_MODE_FM_TERRA); 654 break; 655 } 656 msp3400c_set_carrier(client, state->second, state->main); 657 658 /* unmute */ 659 state->scan_in_progress = 0; 660 msp3400c_set_audmode(client); 661 msp_update_volume(state); 662 663 if (msp_debug) 664 msp3400c_print_mode(client); 665 666 /* monitor tv audio mode, the first time don't wait 667 so long to get a quick stereo/bilingual result */ 668 count = 3; 669 while (state->watch_stereo) { 670 if (msp_sleep(state, count ? 1000 : 5000)) 671 goto restart; 672 if (count) 673 count--; 674 watch_stereo(client); 675 } 676 } 677 dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n"); 678 return 0; 679 } 680 681 682 int msp3410d_thread(void *data) 683 { 684 struct i2c_client *client = data; 685 struct msp_state *state = to_state(i2c_get_clientdata(client)); 686 int val, i, std, count; 687 688 dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3410 daemon started\n"); 689 state->detected_std = V4L2_STD_ALL; 690 set_freezable(); 691 for (;;) { 692 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: sleep\n"); 693 msp_sleep(state, -1); 694 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: wakeup\n"); 695 696 restart: 697 dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n"); 698 state->restart = 0; 699 if (kthread_should_stop()) 700 break; 701 702 if (state->mode == MSP_MODE_EXTERN) { 703 /* no carrier scan needed, just unmute */ 704 dev_dbg_lvl(&client->dev, 1, msp_debug, 705 "thread: no carrier scan\n"); 706 state->scan_in_progress = 0; 707 msp_update_volume(state); 708 continue; 709 } 710 711 /* mute audio */ 712 state->scan_in_progress = 1; 713 msp_update_volume(state); 714 715 /* start autodetect. Note: autodetect is not supported for 716 NTSC-M and radio, hence we force the standard in those 717 cases. */ 718 if (state->radio) 719 std = 0x40; 720 else 721 std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1; 722 state->watch_stereo = 0; 723 state->nicam_on = 0; 724 725 /* wait for tuner to settle down after a channel change */ 726 if (msp_sleep(state, 200)) 727 goto restart; 728 729 if (msp_debug) 730 dev_dbg_lvl(&client->dev, 2, msp_debug, 731 "setting standard: %s (0x%04x)\n", 732 msp_standard_std_name(std), std); 733 734 if (std != 1) { 735 /* programmed some specific mode */ 736 val = std; 737 } else { 738 /* triggered autodetect */ 739 msp_write_dem(client, 0x20, std); 740 for (;;) { 741 if (msp_sleep(state, 100)) 742 goto restart; 743 744 /* check results */ 745 val = msp_read_dem(client, 0x7e); 746 if (val < 0x07ff) 747 break; 748 dev_dbg_lvl(&client->dev, 2, msp_debug, 749 "detection still in progress\n"); 750 } 751 } 752 for (i = 0; msp_stdlist[i].name != NULL; i++) 753 if (msp_stdlist[i].retval == val) 754 break; 755 dev_dbg_lvl(&client->dev, 1, msp_debug, "current standard: %s (0x%04x)\n", 756 msp_standard_std_name(val), val); 757 state->main = msp_stdlist[i].main; 758 state->second = msp_stdlist[i].second; 759 state->std = val; 760 state->rxsubchans = V4L2_TUNER_SUB_MONO; 761 762 if (msp_amsound && !state->radio && 763 (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) { 764 /* autodetection has failed, let backup */ 765 dev_dbg_lvl(&client->dev, 1, msp_debug, "autodetection failed, switching to backup standard: %s (0x%04x)\n", 766 msp_stdlist[8].name ? 767 msp_stdlist[8].name : "unknown", val); 768 state->std = val = 0x0009; 769 msp_write_dem(client, 0x20, val); 770 } else { 771 state->detected_std = msp_standard_std(state->std); 772 } 773 774 /* set stereo */ 775 switch (val) { 776 case 0x0008: /* B/G NICAM */ 777 case 0x000a: /* I NICAM */ 778 case 0x000b: /* D/K NICAM */ 779 if (val == 0x000a) 780 state->mode = MSP_MODE_FM_NICAM2; 781 else 782 state->mode = MSP_MODE_FM_NICAM1; 783 /* just turn on stereo */ 784 state->nicam_on = 1; 785 state->watch_stereo = 1; 786 break; 787 case 0x0009: 788 state->mode = MSP_MODE_AM_NICAM; 789 state->nicam_on = 1; 790 state->watch_stereo = 1; 791 break; 792 case 0x0020: /* BTSC */ 793 /* The pre-'G' models only have BTSC-mono */ 794 state->mode = MSP_MODE_BTSC; 795 break; 796 case 0x0040: /* FM radio */ 797 state->mode = MSP_MODE_FM_RADIO; 798 state->rxsubchans = V4L2_TUNER_SUB_STEREO; 799 /* not needed in theory if we have radio, but 800 short programming enables carrier mute */ 801 msp3400c_set_mode(client, MSP_MODE_FM_RADIO); 802 msp3400c_set_carrier(client, MSP_CARRIER(10.7), 803 MSP_CARRIER(10.7)); 804 break; 805 case 0x0002: 806 case 0x0003: 807 case 0x0004: 808 case 0x0005: 809 state->mode = MSP_MODE_FM_TERRA; 810 state->watch_stereo = 1; 811 break; 812 } 813 814 /* set various prescales */ 815 msp_write_dsp(client, 0x0d, 0x1900); /* scart */ 816 msp_write_dsp(client, 0x0e, 0x3000); /* FM */ 817 if (state->has_nicam) 818 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */ 819 820 if (state->has_i2s_conf) 821 msp_write_dem(client, 0x40, state->i2s_mode); 822 823 /* unmute */ 824 msp3400c_set_audmode(client); 825 state->scan_in_progress = 0; 826 msp_update_volume(state); 827 828 /* monitor tv audio mode, the first time don't wait 829 so long to get a quick stereo/bilingual result */ 830 count = 3; 831 while (state->watch_stereo) { 832 if (msp_sleep(state, count ? 1000 : 5000)) 833 goto restart; 834 if (count) 835 count--; 836 watch_stereo(client); 837 } 838 } 839 dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n"); 840 return 0; 841 } 842 843 /* ----------------------------------------------------------------------- */ 844 845 /* msp34xxG + (autoselect no-thread) 846 * this one uses both automatic standard detection and automatic sound 847 * select which are available in the newer G versions 848 * struct msp: only norm, acb and source are really used in this mode 849 */ 850 851 static int msp34xxg_modus(struct i2c_client *client) 852 { 853 struct msp_state *state = to_state(i2c_get_clientdata(client)); 854 855 if (state->radio) { 856 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected radio modus\n"); 857 return 0x0001; 858 } 859 if (state->v4l2_std == V4L2_STD_NTSC_M_JP) { 860 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (EIA-J) modus\n"); 861 return 0x4001; 862 } 863 if (state->v4l2_std == V4L2_STD_NTSC_M_KR) { 864 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (A2) modus\n"); 865 return 0x0001; 866 } 867 if (state->v4l2_std == V4L2_STD_SECAM_L) { 868 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected SECAM-L modus\n"); 869 return 0x6001; 870 } 871 if (state->v4l2_std & V4L2_STD_MN) { 872 dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (BTSC) modus\n"); 873 return 0x2001; 874 } 875 return 0x7001; 876 } 877 878 static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in) 879 { 880 struct msp_state *state = to_state(i2c_get_clientdata(client)); 881 int source, matrix; 882 883 switch (state->audmode) { 884 case V4L2_TUNER_MODE_MONO: 885 source = 0; /* mono only */ 886 matrix = 0x30; 887 break; 888 case V4L2_TUNER_MODE_LANG2: 889 source = 4; /* stereo or B */ 890 matrix = 0x10; 891 break; 892 case V4L2_TUNER_MODE_LANG1_LANG2: 893 source = 1; /* stereo or A|B */ 894 matrix = 0x20; 895 break; 896 case V4L2_TUNER_MODE_LANG1: 897 source = 3; /* stereo or A */ 898 matrix = 0x00; 899 break; 900 case V4L2_TUNER_MODE_STEREO: 901 default: 902 source = 3; /* stereo or A */ 903 matrix = 0x20; 904 break; 905 } 906 907 if (in == MSP_DSP_IN_TUNER) 908 source = (source << 8) | 0x20; 909 /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14 910 instead of 11, 12, 13. So we add one for that msp version. */ 911 else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic) 912 source = ((in + 1) << 8) | matrix; 913 else 914 source = (in << 8) | matrix; 915 916 dev_dbg_lvl(&client->dev, 1, msp_debug, 917 "set source to %d (0x%x) for output %02x\n", in, source, reg); 918 msp_write_dsp(client, reg, source); 919 } 920 921 static void msp34xxg_set_sources(struct i2c_client *client) 922 { 923 struct msp_state *state = to_state(i2c_get_clientdata(client)); 924 u32 in = state->route_in; 925 926 msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf); 927 /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */ 928 msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf); 929 msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf); 930 msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf); 931 if (state->has_scart2_out) 932 msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf); 933 msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf); 934 } 935 936 /* (re-)initialize the msp34xxg */ 937 static void msp34xxg_reset(struct i2c_client *client) 938 { 939 struct msp_state *state = to_state(i2c_get_clientdata(client)); 940 int tuner = (state->route_in >> 3) & 1; 941 int modus; 942 943 /* initialize std to 1 (autodetect) to signal that no standard is 944 selected yet. */ 945 state->std = 1; 946 947 msp_reset(client); 948 949 if (state->has_i2s_conf) 950 msp_write_dem(client, 0x40, state->i2s_mode); 951 952 /* step-by-step initialisation, as described in the manual */ 953 modus = msp34xxg_modus(client); 954 modus |= tuner ? 0x100 : 0; 955 msp_write_dem(client, 0x30, modus); 956 957 /* write the dsps that may have an influence on 958 standard/audio autodetection right now */ 959 msp34xxg_set_sources(client); 960 961 msp_write_dsp(client, 0x0d, 0x1900); /* scart */ 962 msp_write_dsp(client, 0x0e, 0x3000); /* FM */ 963 if (state->has_nicam) 964 msp_write_dsp(client, 0x10, 0x5a00); /* nicam */ 965 966 /* set identification threshold. Personally, I 967 * I set it to a higher value than the default 968 * of 0x190 to ignore noisy stereo signals. 969 * this needs tuning. (recommended range 0x00a0-0x03c0) 970 * 0x7f0 = forced mono mode 971 * 972 * a2 threshold for stereo/bilingual. 973 * Note: this register is part of the Manual/Compatibility mode. 974 * It is supported by all 'G'-family chips. 975 */ 976 msp_write_dem(client, 0x22, msp_stereo_thresh); 977 } 978 979 int msp34xxg_thread(void *data) 980 { 981 struct i2c_client *client = data; 982 struct msp_state *state = to_state(i2c_get_clientdata(client)); 983 int val, i; 984 985 dev_dbg_lvl(&client->dev, 1, msp_debug, "msp34xxg daemon started\n"); 986 state->detected_std = V4L2_STD_ALL; 987 set_freezable(); 988 for (;;) { 989 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: sleep\n"); 990 msp_sleep(state, -1); 991 dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: wakeup\n"); 992 993 restart: 994 dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: restart scan\n"); 995 state->restart = 0; 996 if (kthread_should_stop()) 997 break; 998 999 if (state->mode == MSP_MODE_EXTERN) { 1000 /* no carrier scan needed, just unmute */ 1001 dev_dbg_lvl(&client->dev, 1, msp_debug, 1002 "thread: no carrier scan\n"); 1003 state->scan_in_progress = 0; 1004 msp_update_volume(state); 1005 continue; 1006 } 1007 1008 /* setup the chip*/ 1009 msp34xxg_reset(client); 1010 state->std = state->radio ? 0x40 : 1011 (state->force_btsc && msp_standard == 1) ? 32 : msp_standard; 1012 msp_write_dem(client, 0x20, state->std); 1013 /* start autodetect */ 1014 if (state->std != 1) 1015 goto unmute; 1016 1017 /* watch autodetect */ 1018 dev_dbg_lvl(&client->dev, 1, msp_debug, 1019 "started autodetect, waiting for result\n"); 1020 for (i = 0; i < 10; i++) { 1021 if (msp_sleep(state, 100)) 1022 goto restart; 1023 1024 /* check results */ 1025 val = msp_read_dem(client, 0x7e); 1026 if (val < 0x07ff) { 1027 state->std = val; 1028 break; 1029 } 1030 dev_dbg_lvl(&client->dev, 2, msp_debug, 1031 "detection still in progress\n"); 1032 } 1033 if (state->std == 1) { 1034 dev_dbg_lvl(&client->dev, 1, msp_debug, 1035 "detection still in progress after 10 tries. giving up.\n"); 1036 continue; 1037 } 1038 1039 unmute: 1040 dev_dbg_lvl(&client->dev, 1, msp_debug, 1041 "detected standard: %s (0x%04x)\n", 1042 msp_standard_std_name(state->std), state->std); 1043 state->detected_std = msp_standard_std(state->std); 1044 1045 if (state->std == 9) { 1046 /* AM NICAM mode */ 1047 msp_write_dsp(client, 0x0e, 0x7c00); 1048 } 1049 1050 /* unmute: dispatch sound to scart output, set scart volume */ 1051 msp_update_volume(state); 1052 1053 /* restore ACB */ 1054 if (msp_write_dsp(client, 0x13, state->acb)) 1055 return -1; 1056 1057 /* the periodic stereo/SAP check is only relevant for 1058 the 0x20 standard (BTSC) */ 1059 if (state->std != 0x20) 1060 continue; 1061 1062 state->watch_stereo = 1; 1063 1064 /* monitor tv audio mode, the first time don't wait 1065 in order to get a quick stereo/SAP update */ 1066 watch_stereo(client); 1067 while (state->watch_stereo) { 1068 watch_stereo(client); 1069 if (msp_sleep(state, 5000)) 1070 goto restart; 1071 } 1072 } 1073 dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n"); 1074 return 0; 1075 } 1076 1077 static int msp34xxg_detect_stereo(struct i2c_client *client) 1078 { 1079 struct msp_state *state = to_state(i2c_get_clientdata(client)); 1080 int status = msp_read_dem(client, 0x0200); 1081 int is_bilingual = status & 0x100; 1082 int is_stereo = status & 0x40; 1083 int oldrx = state->rxsubchans; 1084 1085 if (state->mode == MSP_MODE_EXTERN) 1086 return 0; 1087 1088 state->rxsubchans = 0; 1089 if (is_stereo) 1090 state->rxsubchans = V4L2_TUNER_SUB_STEREO; 1091 else 1092 state->rxsubchans = V4L2_TUNER_SUB_MONO; 1093 if (is_bilingual) { 1094 if (state->std == 0x20) 1095 state->rxsubchans |= V4L2_TUNER_SUB_SAP; 1096 else 1097 state->rxsubchans = 1098 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; 1099 } 1100 dev_dbg_lvl(&client->dev, 1, msp_debug, 1101 "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n", 1102 status, is_stereo, is_bilingual, state->rxsubchans); 1103 return (oldrx != state->rxsubchans); 1104 } 1105 1106 static void msp34xxg_set_audmode(struct i2c_client *client) 1107 { 1108 struct msp_state *state = to_state(i2c_get_clientdata(client)); 1109 1110 if (state->std == 0x20) { 1111 if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) && 1112 (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 || 1113 state->audmode == V4L2_TUNER_MODE_LANG2)) { 1114 msp_write_dem(client, 0x20, 0x21); 1115 } else { 1116 msp_write_dem(client, 0x20, 0x20); 1117 } 1118 } 1119 1120 msp34xxg_set_sources(client); 1121 } 1122 1123 void msp_set_audmode(struct i2c_client *client) 1124 { 1125 struct msp_state *state = to_state(i2c_get_clientdata(client)); 1126 1127 switch (state->opmode) { 1128 case OPMODE_MANUAL: 1129 case OPMODE_AUTODETECT: 1130 msp3400c_set_audmode(client); 1131 break; 1132 case OPMODE_AUTOSELECT: 1133 msp34xxg_set_audmode(client); 1134 break; 1135 } 1136 } 1137 1138 int msp_detect_stereo(struct i2c_client *client) 1139 { 1140 struct msp_state *state = to_state(i2c_get_clientdata(client)); 1141 1142 switch (state->opmode) { 1143 case OPMODE_MANUAL: 1144 case OPMODE_AUTODETECT: 1145 return msp3400c_detect_stereo(client); 1146 case OPMODE_AUTOSELECT: 1147 return msp34xxg_detect_stereo(client); 1148 } 1149 return 0; 1150 } 1151 1152