1 /* 2 3 i2c tv tuner chip device driver 4 controls the philips tda8290+75 tuner chip combo. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 20 This "tda8290" module was split apart from the original "tuner" module. 21 */ 22 23 #include <linux/i2c.h> 24 #include <linux/slab.h> 25 #include <linux/delay.h> 26 #include <linux/videodev2.h> 27 #include "tuner-i2c.h" 28 #include "tda8290.h" 29 #include "tda827x.h" 30 #include "tda18271.h" 31 32 static int debug; 33 module_param(debug, int, 0644); 34 MODULE_PARM_DESC(debug, "enable verbose debug messages"); 35 36 static int deemphasis_50; 37 module_param(deemphasis_50, int, 0644); 38 MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis"); 39 40 /* ---------------------------------------------------------------------- */ 41 42 struct tda8290_priv { 43 struct tuner_i2c_props i2c_props; 44 45 unsigned char tda8290_easy_mode; 46 47 unsigned char tda827x_addr; 48 49 unsigned char ver; 50 #define TDA8290 1 51 #define TDA8295 2 52 #define TDA8275 4 53 #define TDA8275A 8 54 #define TDA18271 16 55 56 struct tda827x_config cfg; 57 }; 58 59 /*---------------------------------------------------------------------*/ 60 61 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close) 62 { 63 struct tda8290_priv *priv = fe->analog_demod_priv; 64 65 unsigned char enable[2] = { 0x21, 0xC0 }; 66 unsigned char disable[2] = { 0x21, 0x00 }; 67 unsigned char *msg; 68 69 if (close) { 70 msg = enable; 71 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 72 /* let the bridge stabilize */ 73 msleep(20); 74 } else { 75 msg = disable; 76 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 77 } 78 79 return 0; 80 } 81 82 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close) 83 { 84 struct tda8290_priv *priv = fe->analog_demod_priv; 85 86 unsigned char enable[2] = { 0x45, 0xc1 }; 87 unsigned char disable[2] = { 0x46, 0x00 }; 88 unsigned char buf[3] = { 0x45, 0x01, 0x00 }; 89 unsigned char *msg; 90 91 if (close) { 92 msg = enable; 93 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 94 /* let the bridge stabilize */ 95 msleep(20); 96 } else { 97 msg = disable; 98 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1); 99 100 buf[2] = msg[1]; 101 buf[2] &= ~0x04; 102 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3); 103 msleep(5); 104 105 msg[1] |= 0x04; 106 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 107 } 108 109 return 0; 110 } 111 112 /*---------------------------------------------------------------------*/ 113 114 static void set_audio(struct dvb_frontend *fe, 115 struct analog_parameters *params) 116 { 117 struct tda8290_priv *priv = fe->analog_demod_priv; 118 char* mode; 119 120 if (params->std & V4L2_STD_MN) { 121 priv->tda8290_easy_mode = 0x01; 122 mode = "MN"; 123 } else if (params->std & V4L2_STD_B) { 124 priv->tda8290_easy_mode = 0x02; 125 mode = "B"; 126 } else if (params->std & V4L2_STD_GH) { 127 priv->tda8290_easy_mode = 0x04; 128 mode = "GH"; 129 } else if (params->std & V4L2_STD_PAL_I) { 130 priv->tda8290_easy_mode = 0x08; 131 mode = "I"; 132 } else if (params->std & V4L2_STD_DK) { 133 priv->tda8290_easy_mode = 0x10; 134 mode = "DK"; 135 } else if (params->std & V4L2_STD_SECAM_L) { 136 priv->tda8290_easy_mode = 0x20; 137 mode = "L"; 138 } else if (params->std & V4L2_STD_SECAM_LC) { 139 priv->tda8290_easy_mode = 0x40; 140 mode = "LC"; 141 } else { 142 priv->tda8290_easy_mode = 0x10; 143 mode = "xx"; 144 } 145 146 if (params->mode == V4L2_TUNER_RADIO) { 147 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */ 148 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01; 149 tuner_dbg("setting to radio FM\n"); 150 } else { 151 tuner_dbg("setting tda829x to system %s\n", mode); 152 } 153 } 154 155 static struct { 156 unsigned char seq[2]; 157 } fm_mode[] = { 158 { { 0x01, 0x81} }, /* Put device into expert mode */ 159 { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */ 160 { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */ 161 { { 0x05, 0x04} }, /* ADC headroom */ 162 { { 0x06, 0x10} }, /* group delay flat */ 163 164 { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */ 165 { { 0x08, 0x00} }, 166 { { 0x09, 0x80} }, 167 { { 0x0a, 0xda} }, 168 { { 0x0b, 0x4b} }, 169 { { 0x0c, 0x68} }, 170 171 { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */ 172 { { 0x14, 0x00} }, /* disable auto mute if no video */ 173 }; 174 175 static void tda8290_set_params(struct dvb_frontend *fe, 176 struct analog_parameters *params) 177 { 178 struct tda8290_priv *priv = fe->analog_demod_priv; 179 180 unsigned char soft_reset[] = { 0x00, 0x00 }; 181 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode }; 182 unsigned char expert_mode[] = { 0x01, 0x80 }; 183 unsigned char agc_out_on[] = { 0x02, 0x00 }; 184 unsigned char gainset_off[] = { 0x28, 0x14 }; 185 unsigned char if_agc_spd[] = { 0x0f, 0x88 }; 186 unsigned char adc_head_6[] = { 0x05, 0x04 }; 187 unsigned char adc_head_9[] = { 0x05, 0x02 }; 188 unsigned char adc_head_12[] = { 0x05, 0x01 }; 189 unsigned char pll_bw_nom[] = { 0x0d, 0x47 }; 190 unsigned char pll_bw_low[] = { 0x0d, 0x27 }; 191 unsigned char gainset_2[] = { 0x28, 0x64 }; 192 unsigned char agc_rst_on[] = { 0x0e, 0x0b }; 193 unsigned char agc_rst_off[] = { 0x0e, 0x09 }; 194 unsigned char if_agc_set[] = { 0x0f, 0x81 }; 195 unsigned char addr_adc_sat = 0x1a; 196 unsigned char addr_agc_stat = 0x1d; 197 unsigned char addr_pll_stat = 0x1b; 198 unsigned char adc_sat, agc_stat, 199 pll_stat; 200 int i; 201 202 set_audio(fe, params); 203 204 if (priv->cfg.config) 205 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config); 206 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2); 207 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2); 208 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2); 209 msleep(1); 210 211 if (params->mode == V4L2_TUNER_RADIO) { 212 unsigned char deemphasis[] = { 0x13, 1 }; 213 214 /* FIXME: allow using a different deemphasis */ 215 216 if (deemphasis_50) 217 deemphasis[1] = 2; 218 219 for (i = 0; i < ARRAY_SIZE(fm_mode); i++) 220 tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2); 221 222 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2); 223 } else { 224 expert_mode[1] = priv->tda8290_easy_mode + 0x80; 225 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2); 226 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2); 227 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2); 228 if (priv->tda8290_easy_mode & 0x60) 229 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2); 230 else 231 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2); 232 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2); 233 } 234 235 236 tda8290_i2c_bridge(fe, 1); 237 238 if (fe->ops.tuner_ops.set_analog_params) 239 fe->ops.tuner_ops.set_analog_params(fe, params); 240 241 for (i = 0; i < 3; i++) { 242 tuner_i2c_xfer_send_recv(&priv->i2c_props, 243 &addr_pll_stat, 1, &pll_stat, 1); 244 if (pll_stat & 0x80) { 245 tuner_i2c_xfer_send_recv(&priv->i2c_props, 246 &addr_adc_sat, 1, 247 &adc_sat, 1); 248 tuner_i2c_xfer_send_recv(&priv->i2c_props, 249 &addr_agc_stat, 1, 250 &agc_stat, 1); 251 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); 252 break; 253 } else { 254 tuner_dbg("tda8290 not locked, no signal?\n"); 255 msleep(100); 256 } 257 } 258 /* adjust headroom resp. gain */ 259 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) { 260 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n", 261 agc_stat, adc_sat, pll_stat & 0x80); 262 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2); 263 msleep(100); 264 tuner_i2c_xfer_send_recv(&priv->i2c_props, 265 &addr_agc_stat, 1, &agc_stat, 1); 266 tuner_i2c_xfer_send_recv(&priv->i2c_props, 267 &addr_pll_stat, 1, &pll_stat, 1); 268 if ((agc_stat > 115) || !(pll_stat & 0x80)) { 269 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n", 270 agc_stat, pll_stat & 0x80); 271 if (priv->cfg.agcf) 272 priv->cfg.agcf(fe); 273 msleep(100); 274 tuner_i2c_xfer_send_recv(&priv->i2c_props, 275 &addr_agc_stat, 1, 276 &agc_stat, 1); 277 tuner_i2c_xfer_send_recv(&priv->i2c_props, 278 &addr_pll_stat, 1, 279 &pll_stat, 1); 280 if((agc_stat > 115) || !(pll_stat & 0x80)) { 281 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat); 282 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2); 283 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2); 284 msleep(100); 285 } 286 } 287 } 288 289 /* l/ l' deadlock? */ 290 if(priv->tda8290_easy_mode & 0x60) { 291 tuner_i2c_xfer_send_recv(&priv->i2c_props, 292 &addr_adc_sat, 1, 293 &adc_sat, 1); 294 tuner_i2c_xfer_send_recv(&priv->i2c_props, 295 &addr_pll_stat, 1, 296 &pll_stat, 1); 297 if ((adc_sat > 20) || !(pll_stat & 0x80)) { 298 tuner_dbg("trying to resolve SECAM L deadlock\n"); 299 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2); 300 msleep(40); 301 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2); 302 } 303 } 304 305 tda8290_i2c_bridge(fe, 0); 306 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2); 307 } 308 309 /*---------------------------------------------------------------------*/ 310 311 static void tda8295_power(struct dvb_frontend *fe, int enable) 312 { 313 struct tda8290_priv *priv = fe->analog_demod_priv; 314 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */ 315 316 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 317 318 if (enable) 319 buf[1] = 0x01; 320 else 321 buf[1] = 0x03; 322 323 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 324 } 325 326 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable) 327 { 328 struct tda8290_priv *priv = fe->analog_demod_priv; 329 unsigned char buf[] = { 0x01, 0x00 }; 330 331 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 332 333 if (enable) 334 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */ 335 else 336 buf[1] = 0x00; /* reset active bit */ 337 338 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 339 } 340 341 static void tda8295_set_video_std(struct dvb_frontend *fe) 342 { 343 struct tda8290_priv *priv = fe->analog_demod_priv; 344 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode }; 345 346 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 347 348 tda8295_set_easy_mode(fe, 1); 349 msleep(20); 350 tda8295_set_easy_mode(fe, 0); 351 } 352 353 /*---------------------------------------------------------------------*/ 354 355 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable) 356 { 357 struct tda8290_priv *priv = fe->analog_demod_priv; 358 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */ 359 360 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 361 362 if (enable) 363 buf[1] &= ~0x40; 364 else 365 buf[1] |= 0x40; 366 367 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 368 } 369 370 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable) 371 { 372 struct tda8290_priv *priv = fe->analog_demod_priv; 373 unsigned char set_gpio_cf[] = { 0x44, 0x00 }; 374 unsigned char set_gpio_val[] = { 0x46, 0x00 }; 375 376 tuner_i2c_xfer_send_recv(&priv->i2c_props, 377 &set_gpio_cf[0], 1, &set_gpio_cf[1], 1); 378 tuner_i2c_xfer_send_recv(&priv->i2c_props, 379 &set_gpio_val[0], 1, &set_gpio_val[1], 1); 380 381 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */ 382 383 if (enable) { 384 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */ 385 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */ 386 } 387 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2); 388 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2); 389 } 390 391 static int tda8295_has_signal(struct dvb_frontend *fe) 392 { 393 struct tda8290_priv *priv = fe->analog_demod_priv; 394 395 unsigned char hvpll_stat = 0x26; 396 unsigned char ret; 397 398 tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1); 399 return (ret & 0x01) ? 65535 : 0; 400 } 401 402 /*---------------------------------------------------------------------*/ 403 404 static void tda8295_set_params(struct dvb_frontend *fe, 405 struct analog_parameters *params) 406 { 407 struct tda8290_priv *priv = fe->analog_demod_priv; 408 409 unsigned char blanking_mode[] = { 0x1d, 0x00 }; 410 411 set_audio(fe, params); 412 413 tuner_dbg("%s: freq = %d\n", __func__, params->frequency); 414 415 tda8295_power(fe, 1); 416 tda8295_agc1_out(fe, 1); 417 418 tuner_i2c_xfer_send_recv(&priv->i2c_props, 419 &blanking_mode[0], 1, &blanking_mode[1], 1); 420 421 tda8295_set_video_std(fe); 422 423 blanking_mode[1] = 0x03; 424 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); 425 msleep(20); 426 427 tda8295_i2c_bridge(fe, 1); 428 429 if (fe->ops.tuner_ops.set_analog_params) 430 fe->ops.tuner_ops.set_analog_params(fe, params); 431 432 if (priv->cfg.agcf) 433 priv->cfg.agcf(fe); 434 435 if (tda8295_has_signal(fe)) 436 tuner_dbg("tda8295 is locked\n"); 437 else 438 tuner_dbg("tda8295 not locked, no signal?\n"); 439 440 tda8295_i2c_bridge(fe, 0); 441 } 442 443 /*---------------------------------------------------------------------*/ 444 445 static int tda8290_has_signal(struct dvb_frontend *fe) 446 { 447 struct tda8290_priv *priv = fe->analog_demod_priv; 448 449 unsigned char i2c_get_afc[1] = { 0x1B }; 450 unsigned char afc = 0; 451 452 tuner_i2c_xfer_send_recv(&priv->i2c_props, 453 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1); 454 return (afc & 0x80)? 65535:0; 455 } 456 457 /*---------------------------------------------------------------------*/ 458 459 static void tda8290_standby(struct dvb_frontend *fe) 460 { 461 struct tda8290_priv *priv = fe->analog_demod_priv; 462 463 unsigned char cb1[] = { 0x30, 0xD0 }; 464 unsigned char tda8290_standby[] = { 0x00, 0x02 }; 465 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 }; 466 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2}; 467 468 tda8290_i2c_bridge(fe, 1); 469 if (priv->ver & TDA8275A) 470 cb1[1] = 0x90; 471 i2c_transfer(priv->i2c_props.adap, &msg, 1); 472 tda8290_i2c_bridge(fe, 0); 473 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2); 474 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); 475 } 476 477 static void tda8295_standby(struct dvb_frontend *fe) 478 { 479 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */ 480 481 tda8295_power(fe, 0); 482 } 483 484 static void tda8290_init_if(struct dvb_frontend *fe) 485 { 486 struct tda8290_priv *priv = fe->analog_demod_priv; 487 488 unsigned char set_VS[] = { 0x30, 0x6F }; 489 unsigned char set_GP00_CF[] = { 0x20, 0x01 }; 490 unsigned char set_GP01_CF[] = { 0x20, 0x0B }; 491 492 if ((priv->cfg.config == 1) || (priv->cfg.config == 2)) 493 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2); 494 else 495 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2); 496 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2); 497 } 498 499 static void tda8295_init_if(struct dvb_frontend *fe) 500 { 501 struct tda8290_priv *priv = fe->analog_demod_priv; 502 503 static unsigned char set_adc_ctl[] = { 0x33, 0x14 }; 504 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 }; 505 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 }; 506 static unsigned char set_pll_reg0[] = { 0x38, 0x23 }; 507 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 }; 508 static unsigned char set_pll_reg10[] = { 0x42, 0x61 }; 509 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b }; 510 511 tda8295_power(fe, 1); 512 513 tda8295_set_easy_mode(fe, 0); 514 tda8295_set_video_std(fe); 515 516 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2); 517 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2); 518 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2); 519 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2); 520 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2); 521 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2); 522 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2); 523 524 tda8295_agc1_out(fe, 0); 525 tda8295_agc2_out(fe, 0); 526 } 527 528 static void tda8290_init_tuner(struct dvb_frontend *fe) 529 { 530 struct tda8290_priv *priv = fe->analog_demod_priv; 531 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf, 532 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 }; 533 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b, 534 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b }; 535 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, 536 .buf=tda8275_init, .len = 14}; 537 if (priv->ver & TDA8275A) 538 msg.buf = tda8275a_init; 539 540 tda8290_i2c_bridge(fe, 1); 541 i2c_transfer(priv->i2c_props.adap, &msg, 1); 542 tda8290_i2c_bridge(fe, 0); 543 } 544 545 /*---------------------------------------------------------------------*/ 546 547 static void tda829x_release(struct dvb_frontend *fe) 548 { 549 struct tda8290_priv *priv = fe->analog_demod_priv; 550 551 /* only try to release the tuner if we've 552 * attached it from within this module */ 553 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A)) 554 if (fe->ops.tuner_ops.release) 555 fe->ops.tuner_ops.release(fe); 556 557 kfree(fe->analog_demod_priv); 558 fe->analog_demod_priv = NULL; 559 } 560 561 static struct tda18271_config tda829x_tda18271_config = { 562 .gate = TDA18271_GATE_ANALOG, 563 }; 564 565 static int tda829x_find_tuner(struct dvb_frontend *fe) 566 { 567 struct tda8290_priv *priv = fe->analog_demod_priv; 568 struct analog_demod_ops *analog_ops = &fe->ops.analog_ops; 569 int i, ret, tuners_found; 570 u32 tuner_addrs; 571 u8 data; 572 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 }; 573 574 if (!analog_ops->i2c_gate_ctrl) { 575 printk(KERN_ERR "tda8290: no gate control were provided!\n"); 576 577 return -EINVAL; 578 } 579 580 analog_ops->i2c_gate_ctrl(fe, 1); 581 582 /* probe for tuner chip */ 583 tuners_found = 0; 584 tuner_addrs = 0; 585 for (i = 0x60; i <= 0x63; i++) { 586 msg.addr = i; 587 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 588 if (ret == 1) { 589 tuners_found++; 590 tuner_addrs = (tuner_addrs << 8) + i; 591 } 592 } 593 /* if there is more than one tuner, we expect the right one is 594 behind the bridge and we choose the highest address that doesn't 595 give a response now 596 */ 597 598 analog_ops->i2c_gate_ctrl(fe, 0); 599 600 if (tuners_found > 1) 601 for (i = 0; i < tuners_found; i++) { 602 msg.addr = tuner_addrs & 0xff; 603 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 604 if (ret == 1) 605 tuner_addrs = tuner_addrs >> 8; 606 else 607 break; 608 } 609 610 if (tuner_addrs == 0) { 611 tuner_addrs = 0x60; 612 tuner_info("could not clearly identify tuner address, " 613 "defaulting to %x\n", tuner_addrs); 614 } else { 615 tuner_addrs = tuner_addrs & 0xff; 616 tuner_info("setting tuner address to %x\n", tuner_addrs); 617 } 618 priv->tda827x_addr = tuner_addrs; 619 msg.addr = tuner_addrs; 620 621 analog_ops->i2c_gate_ctrl(fe, 1); 622 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 623 624 if (ret != 1) { 625 tuner_warn("tuner access failed!\n"); 626 analog_ops->i2c_gate_ctrl(fe, 0); 627 return -EREMOTEIO; 628 } 629 630 if ((data == 0x83) || (data == 0x84)) { 631 priv->ver |= TDA18271; 632 tda829x_tda18271_config.config = priv->cfg.config; 633 dvb_attach(tda18271_attach, fe, priv->tda827x_addr, 634 priv->i2c_props.adap, &tda829x_tda18271_config); 635 } else { 636 if ((data & 0x3c) == 0) 637 priv->ver |= TDA8275; 638 else 639 priv->ver |= TDA8275A; 640 641 dvb_attach(tda827x_attach, fe, priv->tda827x_addr, 642 priv->i2c_props.adap, &priv->cfg); 643 priv->cfg.switch_addr = priv->i2c_props.addr; 644 } 645 if (fe->ops.tuner_ops.init) 646 fe->ops.tuner_ops.init(fe); 647 648 if (fe->ops.tuner_ops.sleep) 649 fe->ops.tuner_ops.sleep(fe); 650 651 analog_ops->i2c_gate_ctrl(fe, 0); 652 653 return 0; 654 } 655 656 static int tda8290_probe(struct tuner_i2c_props *i2c_props) 657 { 658 #define TDA8290_ID 0x89 659 u8 reg = 0x1f, id; 660 struct i2c_msg msg_read[] = { 661 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 662 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 663 }; 664 665 /* detect tda8290 */ 666 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 667 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 668 __func__, reg); 669 return -ENODEV; 670 } 671 672 if (id == TDA8290_ID) { 673 if (debug) 674 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n", 675 __func__, i2c_adapter_id(i2c_props->adap), 676 i2c_props->addr); 677 return 0; 678 } 679 return -ENODEV; 680 } 681 682 static int tda8295_probe(struct tuner_i2c_props *i2c_props) 683 { 684 #define TDA8295_ID 0x8a 685 #define TDA8295C2_ID 0x8b 686 u8 reg = 0x2f, id; 687 struct i2c_msg msg_read[] = { 688 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 689 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 690 }; 691 692 /* detect tda8295 */ 693 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 694 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 695 __func__, reg); 696 return -ENODEV; 697 } 698 699 if ((id & 0xfe) == TDA8295_ID) { 700 if (debug) 701 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n", 702 __func__, (id == TDA8295_ID) ? 703 "tda8295c1" : "tda8295c2", 704 i2c_adapter_id(i2c_props->adap), 705 i2c_props->addr); 706 return 0; 707 } 708 709 return -ENODEV; 710 } 711 712 static struct analog_demod_ops tda8290_ops = { 713 .set_params = tda8290_set_params, 714 .has_signal = tda8290_has_signal, 715 .standby = tda8290_standby, 716 .release = tda829x_release, 717 .i2c_gate_ctrl = tda8290_i2c_bridge, 718 }; 719 720 static struct analog_demod_ops tda8295_ops = { 721 .set_params = tda8295_set_params, 722 .has_signal = tda8295_has_signal, 723 .standby = tda8295_standby, 724 .release = tda829x_release, 725 .i2c_gate_ctrl = tda8295_i2c_bridge, 726 }; 727 728 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe, 729 struct i2c_adapter *i2c_adap, u8 i2c_addr, 730 struct tda829x_config *cfg) 731 { 732 struct tda8290_priv *priv = NULL; 733 char *name; 734 735 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); 736 if (priv == NULL) 737 return NULL; 738 fe->analog_demod_priv = priv; 739 740 priv->i2c_props.addr = i2c_addr; 741 priv->i2c_props.adap = i2c_adap; 742 priv->i2c_props.name = "tda829x"; 743 if (cfg) 744 priv->cfg.config = cfg->lna_cfg; 745 746 if (tda8290_probe(&priv->i2c_props) == 0) { 747 priv->ver = TDA8290; 748 memcpy(&fe->ops.analog_ops, &tda8290_ops, 749 sizeof(struct analog_demod_ops)); 750 } 751 752 if (tda8295_probe(&priv->i2c_props) == 0) { 753 priv->ver = TDA8295; 754 memcpy(&fe->ops.analog_ops, &tda8295_ops, 755 sizeof(struct analog_demod_ops)); 756 } 757 758 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) { 759 tda8295_power(fe, 1); 760 if (tda829x_find_tuner(fe) < 0) 761 goto fail; 762 } 763 764 switch (priv->ver) { 765 case TDA8290: 766 name = "tda8290"; 767 break; 768 case TDA8295: 769 name = "tda8295"; 770 break; 771 case TDA8290 | TDA8275: 772 name = "tda8290+75"; 773 break; 774 case TDA8295 | TDA8275: 775 name = "tda8295+75"; 776 break; 777 case TDA8290 | TDA8275A: 778 name = "tda8290+75a"; 779 break; 780 case TDA8295 | TDA8275A: 781 name = "tda8295+75a"; 782 break; 783 case TDA8290 | TDA18271: 784 name = "tda8290+18271"; 785 break; 786 case TDA8295 | TDA18271: 787 name = "tda8295+18271"; 788 break; 789 default: 790 goto fail; 791 } 792 tuner_info("type set to %s\n", name); 793 794 fe->ops.analog_ops.info.name = name; 795 796 if (priv->ver & TDA8290) { 797 if (priv->ver & (TDA8275 | TDA8275A)) 798 tda8290_init_tuner(fe); 799 tda8290_init_if(fe); 800 } else if (priv->ver & TDA8295) 801 tda8295_init_if(fe); 802 803 return fe; 804 805 fail: 806 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops)); 807 808 tda829x_release(fe); 809 return NULL; 810 } 811 EXPORT_SYMBOL_GPL(tda829x_attach); 812 813 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr) 814 { 815 struct tuner_i2c_props i2c_props = { 816 .adap = i2c_adap, 817 .addr = i2c_addr, 818 }; 819 820 unsigned char soft_reset[] = { 0x00, 0x00 }; 821 unsigned char easy_mode_b[] = { 0x01, 0x02 }; 822 unsigned char easy_mode_g[] = { 0x01, 0x04 }; 823 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 }; 824 unsigned char addr_dto_lsb = 0x07; 825 unsigned char data; 826 #define PROBE_BUFFER_SIZE 8 827 unsigned char buf[PROBE_BUFFER_SIZE]; 828 int i; 829 830 /* rule out tda9887, which would return the same byte repeatedly */ 831 tuner_i2c_xfer_send_recv(&i2c_props, 832 soft_reset, 1, buf, PROBE_BUFFER_SIZE); 833 for (i = 1; i < PROBE_BUFFER_SIZE; i++) { 834 if (buf[i] != buf[0]) 835 break; 836 } 837 838 /* all bytes are equal, not a tda829x - probably a tda9887 */ 839 if (i == PROBE_BUFFER_SIZE) 840 return -ENODEV; 841 842 if ((tda8290_probe(&i2c_props) == 0) || 843 (tda8295_probe(&i2c_props) == 0)) 844 return 0; 845 846 /* fall back to old probing method */ 847 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2); 848 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 849 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1); 850 if (data == 0) { 851 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2); 852 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 853 tuner_i2c_xfer_send_recv(&i2c_props, 854 &addr_dto_lsb, 1, &data, 1); 855 if (data == 0x7b) { 856 return 0; 857 } 858 } 859 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3); 860 return -ENODEV; 861 } 862 EXPORT_SYMBOL_GPL(tda829x_probe); 863 864 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver"); 865 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky"); 866 MODULE_LICENSE("GPL"); 867 868 /* 869 * Overrides for Emacs so that we follow Linus's tabbing style. 870 * --------------------------------------------------------------------------- 871 * Local variables: 872 * c-basic-offset: 8 873 * End: 874 */ 875