1 #include <linux/module.h> 2 #include <linux/kernel.h> 3 #include <linux/i2c.h> 4 #include <linux/types.h> 5 #include <linux/init.h> 6 #include <linux/errno.h> 7 #include <linux/delay.h> 8 #include <linux/videodev2.h> 9 #include <media/v4l2-common.h> 10 #include <media/tuner.h> 11 #include "tuner-i2c.h" 12 #include "tda9887.h" 13 14 15 /* Chips: 16 TDA9885 (PAL, NTSC) 17 TDA9886 (PAL, SECAM, NTSC) 18 TDA9887 (PAL, SECAM, NTSC, FM Radio) 19 20 Used as part of several tuners 21 */ 22 23 static int debug; 24 module_param(debug, int, 0644); 25 MODULE_PARM_DESC(debug, "enable verbose debug messages"); 26 27 static DEFINE_MUTEX(tda9887_list_mutex); 28 static LIST_HEAD(hybrid_tuner_instance_list); 29 30 struct tda9887_priv { 31 struct tuner_i2c_props i2c_props; 32 struct list_head hybrid_tuner_instance_list; 33 34 unsigned char data[4]; 35 unsigned int config; 36 unsigned int mode; 37 unsigned int audmode; 38 v4l2_std_id std; 39 40 bool standby; 41 }; 42 43 /* ---------------------------------------------------------------------- */ 44 45 #define UNSET (-1U) 46 47 struct tvnorm { 48 v4l2_std_id std; 49 char *name; 50 unsigned char b; 51 unsigned char c; 52 unsigned char e; 53 }; 54 55 /* ---------------------------------------------------------------------- */ 56 57 // 58 // TDA defines 59 // 60 61 //// first reg (b) 62 #define cVideoTrapBypassOFF 0x00 // bit b0 63 #define cVideoTrapBypassON 0x01 // bit b0 64 65 #define cAutoMuteFmInactive 0x00 // bit b1 66 #define cAutoMuteFmActive 0x02 // bit b1 67 68 #define cIntercarrier 0x00 // bit b2 69 #define cQSS 0x04 // bit b2 70 71 #define cPositiveAmTV 0x00 // bit b3:4 72 #define cFmRadio 0x08 // bit b3:4 73 #define cNegativeFmTV 0x10 // bit b3:4 74 75 76 #define cForcedMuteAudioON 0x20 // bit b5 77 #define cForcedMuteAudioOFF 0x00 // bit b5 78 79 #define cOutputPort1Active 0x00 // bit b6 80 #define cOutputPort1Inactive 0x40 // bit b6 81 82 #define cOutputPort2Active 0x00 // bit b7 83 #define cOutputPort2Inactive 0x80 // bit b7 84 85 86 //// second reg (c) 87 #define cDeemphasisOFF 0x00 // bit c5 88 #define cDeemphasisON 0x20 // bit c5 89 90 #define cDeemphasis75 0x00 // bit c6 91 #define cDeemphasis50 0x40 // bit c6 92 93 #define cAudioGain0 0x00 // bit c7 94 #define cAudioGain6 0x80 // bit c7 95 96 #define cTopMask 0x1f // bit c0:4 97 #define cTopDefault 0x10 // bit c0:4 98 99 //// third reg (e) 100 #define cAudioIF_4_5 0x00 // bit e0:1 101 #define cAudioIF_5_5 0x01 // bit e0:1 102 #define cAudioIF_6_0 0x02 // bit e0:1 103 #define cAudioIF_6_5 0x03 // bit e0:1 104 105 106 #define cVideoIFMask 0x1c // bit e2:4 107 /* Video IF selection in TV Mode (bit B3=0) */ 108 #define cVideoIF_58_75 0x00 // bit e2:4 109 #define cVideoIF_45_75 0x04 // bit e2:4 110 #define cVideoIF_38_90 0x08 // bit e2:4 111 #define cVideoIF_38_00 0x0C // bit e2:4 112 #define cVideoIF_33_90 0x10 // bit e2:4 113 #define cVideoIF_33_40 0x14 // bit e2:4 114 #define cRadioIF_45_75 0x18 // bit e2:4 115 #define cRadioIF_38_90 0x1C // bit e2:4 116 117 /* IF1 selection in Radio Mode (bit B3=1) */ 118 #define cRadioIF_33_30 0x00 // bit e2,4 (also 0x10,0x14) 119 #define cRadioIF_41_30 0x04 // bit e2,4 120 121 /* Output of AFC pin in radio mode when bit E7=1 */ 122 #define cRadioAGC_SIF 0x00 // bit e3 123 #define cRadioAGC_FM 0x08 // bit e3 124 125 #define cTunerGainNormal 0x00 // bit e5 126 #define cTunerGainLow 0x20 // bit e5 127 128 #define cGating_18 0x00 // bit e6 129 #define cGating_36 0x40 // bit e6 130 131 #define cAgcOutON 0x80 // bit e7 132 #define cAgcOutOFF 0x00 // bit e7 133 134 /* ---------------------------------------------------------------------- */ 135 136 static struct tvnorm tvnorms[] = { 137 { 138 .std = V4L2_STD_PAL_BG | V4L2_STD_PAL_H | V4L2_STD_PAL_N, 139 .name = "PAL-BGHN", 140 .b = ( cNegativeFmTV | 141 cQSS ), 142 .c = ( cDeemphasisON | 143 cDeemphasis50 | 144 cTopDefault), 145 .e = ( cGating_36 | 146 cAudioIF_5_5 | 147 cVideoIF_38_90 ), 148 },{ 149 .std = V4L2_STD_PAL_I, 150 .name = "PAL-I", 151 .b = ( cNegativeFmTV | 152 cQSS ), 153 .c = ( cDeemphasisON | 154 cDeemphasis50 | 155 cTopDefault), 156 .e = ( cGating_36 | 157 cAudioIF_6_0 | 158 cVideoIF_38_90 ), 159 },{ 160 .std = V4L2_STD_PAL_DK, 161 .name = "PAL-DK", 162 .b = ( cNegativeFmTV | 163 cQSS ), 164 .c = ( cDeemphasisON | 165 cDeemphasis50 | 166 cTopDefault), 167 .e = ( cGating_36 | 168 cAudioIF_6_5 | 169 cVideoIF_38_90 ), 170 },{ 171 .std = V4L2_STD_PAL_M | V4L2_STD_PAL_Nc, 172 .name = "PAL-M/Nc", 173 .b = ( cNegativeFmTV | 174 cQSS ), 175 .c = ( cDeemphasisON | 176 cDeemphasis75 | 177 cTopDefault), 178 .e = ( cGating_36 | 179 cAudioIF_4_5 | 180 cVideoIF_45_75 ), 181 },{ 182 .std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H, 183 .name = "SECAM-BGH", 184 .b = ( cNegativeFmTV | 185 cQSS ), 186 .c = ( cTopDefault), 187 .e = ( cAudioIF_5_5 | 188 cVideoIF_38_90 ), 189 },{ 190 .std = V4L2_STD_SECAM_L, 191 .name = "SECAM-L", 192 .b = ( cPositiveAmTV | 193 cQSS ), 194 .c = ( cTopDefault), 195 .e = ( cGating_36 | 196 cAudioIF_6_5 | 197 cVideoIF_38_90 ), 198 },{ 199 .std = V4L2_STD_SECAM_LC, 200 .name = "SECAM-L'", 201 .b = ( cOutputPort2Inactive | 202 cPositiveAmTV | 203 cQSS ), 204 .c = ( cTopDefault), 205 .e = ( cGating_36 | 206 cAudioIF_6_5 | 207 cVideoIF_33_90 ), 208 },{ 209 .std = V4L2_STD_SECAM_DK, 210 .name = "SECAM-DK", 211 .b = ( cNegativeFmTV | 212 cQSS ), 213 .c = ( cDeemphasisON | 214 cDeemphasis50 | 215 cTopDefault), 216 .e = ( cGating_36 | 217 cAudioIF_6_5 | 218 cVideoIF_38_90 ), 219 },{ 220 .std = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR, 221 .name = "NTSC-M", 222 .b = ( cNegativeFmTV | 223 cQSS ), 224 .c = ( cDeemphasisON | 225 cDeemphasis75 | 226 cTopDefault), 227 .e = ( cGating_36 | 228 cAudioIF_4_5 | 229 cVideoIF_45_75 ), 230 },{ 231 .std = V4L2_STD_NTSC_M_JP, 232 .name = "NTSC-M-JP", 233 .b = ( cNegativeFmTV | 234 cQSS ), 235 .c = ( cDeemphasisON | 236 cDeemphasis50 | 237 cTopDefault), 238 .e = ( cGating_36 | 239 cAudioIF_4_5 | 240 cVideoIF_58_75 ), 241 } 242 }; 243 244 static struct tvnorm radio_stereo = { 245 .name = "Radio Stereo", 246 .b = ( cFmRadio | 247 cQSS ), 248 .c = ( cDeemphasisOFF | 249 cAudioGain6 | 250 cTopDefault), 251 .e = ( cTunerGainLow | 252 cAudioIF_5_5 | 253 cRadioIF_38_90 ), 254 }; 255 256 static struct tvnorm radio_mono = { 257 .name = "Radio Mono", 258 .b = ( cFmRadio | 259 cQSS ), 260 .c = ( cDeemphasisON | 261 cDeemphasis75 | 262 cTopDefault), 263 .e = ( cTunerGainLow | 264 cAudioIF_5_5 | 265 cRadioIF_38_90 ), 266 }; 267 268 /* ---------------------------------------------------------------------- */ 269 270 static void dump_read_message(struct dvb_frontend *fe, unsigned char *buf) 271 { 272 struct tda9887_priv *priv = fe->analog_demod_priv; 273 274 static char *afc[16] = { 275 "- 12.5 kHz", 276 "- 37.5 kHz", 277 "- 62.5 kHz", 278 "- 87.5 kHz", 279 "-112.5 kHz", 280 "-137.5 kHz", 281 "-162.5 kHz", 282 "-187.5 kHz [min]", 283 "+187.5 kHz [max]", 284 "+162.5 kHz", 285 "+137.5 kHz", 286 "+112.5 kHz", 287 "+ 87.5 kHz", 288 "+ 62.5 kHz", 289 "+ 37.5 kHz", 290 "+ 12.5 kHz", 291 }; 292 tuner_info("read: 0x%2x\n", buf[0]); 293 tuner_info(" after power on : %s\n", (buf[0] & 0x01) ? "yes" : "no"); 294 tuner_info(" afc : %s\n", afc[(buf[0] >> 1) & 0x0f]); 295 tuner_info(" fmif level : %s\n", (buf[0] & 0x20) ? "high" : "low"); 296 tuner_info(" afc window : %s\n", (buf[0] & 0x40) ? "in" : "out"); 297 tuner_info(" vfi level : %s\n", (buf[0] & 0x80) ? "high" : "low"); 298 } 299 300 static void dump_write_message(struct dvb_frontend *fe, unsigned char *buf) 301 { 302 struct tda9887_priv *priv = fe->analog_demod_priv; 303 304 static char *sound[4] = { 305 "AM/TV", 306 "FM/radio", 307 "FM/TV", 308 "FM/radio" 309 }; 310 static char *adjust[32] = { 311 "-16", "-15", "-14", "-13", "-12", "-11", "-10", "-9", 312 "-8", "-7", "-6", "-5", "-4", "-3", "-2", "-1", 313 "0", "+1", "+2", "+3", "+4", "+5", "+6", "+7", 314 "+8", "+9", "+10", "+11", "+12", "+13", "+14", "+15" 315 }; 316 static char *deemph[4] = { 317 "no", "no", "75", "50" 318 }; 319 static char *carrier[4] = { 320 "4.5 MHz", 321 "5.5 MHz", 322 "6.0 MHz", 323 "6.5 MHz / AM" 324 }; 325 static char *vif[8] = { 326 "58.75 MHz", 327 "45.75 MHz", 328 "38.9 MHz", 329 "38.0 MHz", 330 "33.9 MHz", 331 "33.4 MHz", 332 "45.75 MHz + pin13", 333 "38.9 MHz + pin13", 334 }; 335 static char *rif[4] = { 336 "44 MHz", 337 "52 MHz", 338 "52 MHz", 339 "44 MHz", 340 }; 341 342 tuner_info("write: byte B 0x%02x\n", buf[1]); 343 tuner_info(" B0 video mode : %s\n", 344 (buf[1] & 0x01) ? "video trap" : "sound trap"); 345 tuner_info(" B1 auto mute fm : %s\n", 346 (buf[1] & 0x02) ? "yes" : "no"); 347 tuner_info(" B2 carrier mode : %s\n", 348 (buf[1] & 0x04) ? "QSS" : "Intercarrier"); 349 tuner_info(" B3-4 tv sound/radio : %s\n", 350 sound[(buf[1] & 0x18) >> 3]); 351 tuner_info(" B5 force mute audio: %s\n", 352 (buf[1] & 0x20) ? "yes" : "no"); 353 tuner_info(" B6 output port 1 : %s\n", 354 (buf[1] & 0x40) ? "high (inactive)" : "low (active)"); 355 tuner_info(" B7 output port 2 : %s\n", 356 (buf[1] & 0x80) ? "high (inactive)" : "low (active)"); 357 358 tuner_info("write: byte C 0x%02x\n", buf[2]); 359 tuner_info(" C0-4 top adjustment : %s dB\n", 360 adjust[buf[2] & 0x1f]); 361 tuner_info(" C5-6 de-emphasis : %s\n", 362 deemph[(buf[2] & 0x60) >> 5]); 363 tuner_info(" C7 audio gain : %s\n", 364 (buf[2] & 0x80) ? "-6" : "0"); 365 366 tuner_info("write: byte E 0x%02x\n", buf[3]); 367 tuner_info(" E0-1 sound carrier : %s\n", 368 carrier[(buf[3] & 0x03)]); 369 tuner_info(" E6 l pll gating : %s\n", 370 (buf[3] & 0x40) ? "36" : "13"); 371 372 if (buf[1] & 0x08) { 373 /* radio */ 374 tuner_info(" E2-4 video if : %s\n", 375 rif[(buf[3] & 0x0c) >> 2]); 376 tuner_info(" E7 vif agc output : %s\n", 377 (buf[3] & 0x80) 378 ? ((buf[3] & 0x10) ? "fm-agc radio" : 379 "sif-agc radio") 380 : "fm radio carrier afc"); 381 } else { 382 /* video */ 383 tuner_info(" E2-4 video if : %s\n", 384 vif[(buf[3] & 0x1c) >> 2]); 385 tuner_info(" E5 tuner gain : %s\n", 386 (buf[3] & 0x80) 387 ? ((buf[3] & 0x20) ? "external" : "normal") 388 : ((buf[3] & 0x20) ? "minimum" : "normal")); 389 tuner_info(" E7 vif agc output : %s\n", 390 (buf[3] & 0x80) ? ((buf[3] & 0x20) 391 ? "pin3 port, pin22 vif agc out" 392 : "pin22 port, pin3 vif acg ext in") 393 : "pin3+pin22 port"); 394 } 395 tuner_info("--\n"); 396 } 397 398 /* ---------------------------------------------------------------------- */ 399 400 static int tda9887_set_tvnorm(struct dvb_frontend *fe) 401 { 402 struct tda9887_priv *priv = fe->analog_demod_priv; 403 struct tvnorm *norm = NULL; 404 char *buf = priv->data; 405 int i; 406 407 if (priv->mode == V4L2_TUNER_RADIO) { 408 if (priv->audmode == V4L2_TUNER_MODE_MONO) 409 norm = &radio_mono; 410 else 411 norm = &radio_stereo; 412 } else { 413 for (i = 0; i < ARRAY_SIZE(tvnorms); i++) { 414 if (tvnorms[i].std & priv->std) { 415 norm = tvnorms+i; 416 break; 417 } 418 } 419 } 420 if (NULL == norm) { 421 tuner_dbg("Unsupported tvnorm entry - audio muted\n"); 422 return -1; 423 } 424 425 tuner_dbg("configure for: %s\n", norm->name); 426 buf[1] = norm->b; 427 buf[2] = norm->c; 428 buf[3] = norm->e; 429 return 0; 430 } 431 432 static unsigned int port1 = UNSET; 433 static unsigned int port2 = UNSET; 434 static unsigned int qss = UNSET; 435 static unsigned int adjust = UNSET; 436 437 module_param(port1, int, 0644); 438 module_param(port2, int, 0644); 439 module_param(qss, int, 0644); 440 module_param(adjust, int, 0644); 441 442 static int tda9887_set_insmod(struct dvb_frontend *fe) 443 { 444 struct tda9887_priv *priv = fe->analog_demod_priv; 445 char *buf = priv->data; 446 447 if (UNSET != port1) { 448 if (port1) 449 buf[1] |= cOutputPort1Inactive; 450 else 451 buf[1] &= ~cOutputPort1Inactive; 452 } 453 if (UNSET != port2) { 454 if (port2) 455 buf[1] |= cOutputPort2Inactive; 456 else 457 buf[1] &= ~cOutputPort2Inactive; 458 } 459 460 if (UNSET != qss) { 461 if (qss) 462 buf[1] |= cQSS; 463 else 464 buf[1] &= ~cQSS; 465 } 466 467 if (adjust < 0x20) { 468 buf[2] &= ~cTopMask; 469 buf[2] |= adjust; 470 } 471 return 0; 472 } 473 474 static int tda9887_do_config(struct dvb_frontend *fe) 475 { 476 struct tda9887_priv *priv = fe->analog_demod_priv; 477 char *buf = priv->data; 478 479 if (priv->config & TDA9887_PORT1_ACTIVE) 480 buf[1] &= ~cOutputPort1Inactive; 481 if (priv->config & TDA9887_PORT1_INACTIVE) 482 buf[1] |= cOutputPort1Inactive; 483 if (priv->config & TDA9887_PORT2_ACTIVE) 484 buf[1] &= ~cOutputPort2Inactive; 485 if (priv->config & TDA9887_PORT2_INACTIVE) 486 buf[1] |= cOutputPort2Inactive; 487 488 if (priv->config & TDA9887_QSS) 489 buf[1] |= cQSS; 490 if (priv->config & TDA9887_INTERCARRIER) 491 buf[1] &= ~cQSS; 492 493 if (priv->config & TDA9887_AUTOMUTE) 494 buf[1] |= cAutoMuteFmActive; 495 if (priv->config & TDA9887_DEEMPHASIS_MASK) { 496 buf[2] &= ~0x60; 497 switch (priv->config & TDA9887_DEEMPHASIS_MASK) { 498 case TDA9887_DEEMPHASIS_NONE: 499 buf[2] |= cDeemphasisOFF; 500 break; 501 case TDA9887_DEEMPHASIS_50: 502 buf[2] |= cDeemphasisON | cDeemphasis50; 503 break; 504 case TDA9887_DEEMPHASIS_75: 505 buf[2] |= cDeemphasisON | cDeemphasis75; 506 break; 507 } 508 } 509 if (priv->config & TDA9887_TOP_SET) { 510 buf[2] &= ~cTopMask; 511 buf[2] |= (priv->config >> 8) & cTopMask; 512 } 513 if ((priv->config & TDA9887_INTERCARRIER_NTSC) && 514 (priv->std & V4L2_STD_NTSC)) 515 buf[1] &= ~cQSS; 516 if (priv->config & TDA9887_GATING_18) 517 buf[3] &= ~cGating_36; 518 519 if (priv->mode == V4L2_TUNER_RADIO) { 520 if (priv->config & TDA9887_RIF_41_3) { 521 buf[3] &= ~cVideoIFMask; 522 buf[3] |= cRadioIF_41_30; 523 } 524 if (priv->config & TDA9887_GAIN_NORMAL) 525 buf[3] &= ~cTunerGainLow; 526 } 527 528 return 0; 529 } 530 531 /* ---------------------------------------------------------------------- */ 532 533 static int tda9887_status(struct dvb_frontend *fe) 534 { 535 struct tda9887_priv *priv = fe->analog_demod_priv; 536 unsigned char buf[1]; 537 int rc; 538 539 rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, 1); 540 if (rc != 1) 541 tuner_info("i2c i/o error: rc == %d (should be 1)\n", rc); 542 dump_read_message(fe, buf); 543 return 0; 544 } 545 546 static void tda9887_configure(struct dvb_frontend *fe) 547 { 548 struct tda9887_priv *priv = fe->analog_demod_priv; 549 int rc; 550 551 memset(priv->data,0,sizeof(priv->data)); 552 tda9887_set_tvnorm(fe); 553 554 /* A note on the port settings: 555 These settings tend to depend on the specifics of the board. 556 By default they are set to inactive (bit value 1) by this driver, 557 overwriting any changes made by the tvnorm. This means that it 558 is the responsibility of the module using the tda9887 to set 559 these values in case of changes in the tvnorm. 560 In many cases port 2 should be made active (0) when selecting 561 SECAM-L, and port 2 should remain inactive (1) for SECAM-L'. 562 563 For the other standards the tda9887 application note says that 564 the ports should be set to active (0), but, again, that may 565 differ depending on the precise hardware configuration. 566 */ 567 priv->data[1] |= cOutputPort1Inactive; 568 priv->data[1] |= cOutputPort2Inactive; 569 570 tda9887_do_config(fe); 571 tda9887_set_insmod(fe); 572 573 if (priv->standby) 574 priv->data[1] |= cForcedMuteAudioON; 575 576 tuner_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n", 577 priv->data[1], priv->data[2], priv->data[3]); 578 if (debug > 1) 579 dump_write_message(fe, priv->data); 580 581 if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,priv->data,4))) 582 tuner_info("i2c i/o error: rc == %d (should be 4)\n", rc); 583 584 if (debug > 2) { 585 msleep_interruptible(1000); 586 tda9887_status(fe); 587 } 588 } 589 590 /* ---------------------------------------------------------------------- */ 591 592 static void tda9887_tuner_status(struct dvb_frontend *fe) 593 { 594 struct tda9887_priv *priv = fe->analog_demod_priv; 595 tuner_info("Data bytes: b=0x%02x c=0x%02x e=0x%02x\n", 596 priv->data[1], priv->data[2], priv->data[3]); 597 } 598 599 static int tda9887_get_afc(struct dvb_frontend *fe, s32 *afc) 600 { 601 struct tda9887_priv *priv = fe->analog_demod_priv; 602 static const int AFC_BITS_2_kHz[] = { 603 -12500, -37500, -62500, -97500, 604 -112500, -137500, -162500, -187500, 605 187500, 162500, 137500, 112500, 606 97500 , 62500, 37500 , 12500 607 }; 608 __u8 reg = 0; 609 610 if (priv->mode != V4L2_TUNER_RADIO) 611 return 0; 612 if (1 == tuner_i2c_xfer_recv(&priv->i2c_props, ®, 1)) 613 *afc = AFC_BITS_2_kHz[(reg >> 1) & 0x0f]; 614 return 0; 615 } 616 617 static void tda9887_standby(struct dvb_frontend *fe) 618 { 619 struct tda9887_priv *priv = fe->analog_demod_priv; 620 621 priv->standby = true; 622 623 tda9887_configure(fe); 624 } 625 626 static void tda9887_set_params(struct dvb_frontend *fe, 627 struct analog_parameters *params) 628 { 629 struct tda9887_priv *priv = fe->analog_demod_priv; 630 631 priv->standby = false; 632 priv->mode = params->mode; 633 priv->audmode = params->audmode; 634 priv->std = params->std; 635 tda9887_configure(fe); 636 } 637 638 static int tda9887_set_config(struct dvb_frontend *fe, void *priv_cfg) 639 { 640 struct tda9887_priv *priv = fe->analog_demod_priv; 641 642 priv->config = *(unsigned int *)priv_cfg; 643 tda9887_configure(fe); 644 645 return 0; 646 } 647 648 static void tda9887_release(struct dvb_frontend *fe) 649 { 650 struct tda9887_priv *priv = fe->analog_demod_priv; 651 652 mutex_lock(&tda9887_list_mutex); 653 654 if (priv) 655 hybrid_tuner_release_state(priv); 656 657 mutex_unlock(&tda9887_list_mutex); 658 659 fe->analog_demod_priv = NULL; 660 } 661 662 static const struct analog_demod_ops tda9887_ops = { 663 .info = { 664 .name = "tda9887", 665 }, 666 .set_params = tda9887_set_params, 667 .standby = tda9887_standby, 668 .tuner_status = tda9887_tuner_status, 669 .get_afc = tda9887_get_afc, 670 .release = tda9887_release, 671 .set_config = tda9887_set_config, 672 }; 673 674 struct dvb_frontend *tda9887_attach(struct dvb_frontend *fe, 675 struct i2c_adapter *i2c_adap, 676 u8 i2c_addr) 677 { 678 struct tda9887_priv *priv = NULL; 679 int instance; 680 681 mutex_lock(&tda9887_list_mutex); 682 683 instance = hybrid_tuner_request_state(struct tda9887_priv, priv, 684 hybrid_tuner_instance_list, 685 i2c_adap, i2c_addr, "tda9887"); 686 switch (instance) { 687 case 0: 688 mutex_unlock(&tda9887_list_mutex); 689 return NULL; 690 case 1: 691 fe->analog_demod_priv = priv; 692 priv->standby = true; 693 tuner_info("tda988[5/6/7] found\n"); 694 break; 695 default: 696 fe->analog_demod_priv = priv; 697 break; 698 } 699 700 mutex_unlock(&tda9887_list_mutex); 701 702 memcpy(&fe->ops.analog_ops, &tda9887_ops, 703 sizeof(struct analog_demod_ops)); 704 705 return fe; 706 } 707 EXPORT_SYMBOL_GPL(tda9887_attach); 708 709 MODULE_LICENSE("GPL"); 710