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 struct tda18271_std_map *tda18271_std_map; 58 }; 59 60 /*---------------------------------------------------------------------*/ 61 62 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close) 63 { 64 struct tda8290_priv *priv = fe->analog_demod_priv; 65 66 unsigned char enable[2] = { 0x21, 0xC0 }; 67 unsigned char disable[2] = { 0x21, 0x00 }; 68 unsigned char *msg; 69 70 if (close) { 71 msg = enable; 72 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 73 /* let the bridge stabilize */ 74 msleep(20); 75 } else { 76 msg = disable; 77 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 78 } 79 80 return 0; 81 } 82 83 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close) 84 { 85 struct tda8290_priv *priv = fe->analog_demod_priv; 86 87 unsigned char enable[2] = { 0x45, 0xc1 }; 88 unsigned char disable[2] = { 0x46, 0x00 }; 89 unsigned char buf[3] = { 0x45, 0x01, 0x00 }; 90 unsigned char *msg; 91 92 if (close) { 93 msg = enable; 94 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 95 /* let the bridge stabilize */ 96 msleep(20); 97 } else { 98 msg = disable; 99 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1); 100 101 buf[2] = msg[1]; 102 buf[2] &= ~0x04; 103 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3); 104 msleep(5); 105 106 msg[1] |= 0x04; 107 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 108 } 109 110 return 0; 111 } 112 113 /*---------------------------------------------------------------------*/ 114 115 static void set_audio(struct dvb_frontend *fe, 116 struct analog_parameters *params) 117 { 118 struct tda8290_priv *priv = fe->analog_demod_priv; 119 char* mode; 120 121 if (params->std & V4L2_STD_MN) { 122 priv->tda8290_easy_mode = 0x01; 123 mode = "MN"; 124 } else if (params->std & V4L2_STD_B) { 125 priv->tda8290_easy_mode = 0x02; 126 mode = "B"; 127 } else if (params->std & V4L2_STD_GH) { 128 priv->tda8290_easy_mode = 0x04; 129 mode = "GH"; 130 } else if (params->std & V4L2_STD_PAL_I) { 131 priv->tda8290_easy_mode = 0x08; 132 mode = "I"; 133 } else if (params->std & V4L2_STD_DK) { 134 priv->tda8290_easy_mode = 0x10; 135 mode = "DK"; 136 } else if (params->std & V4L2_STD_SECAM_L) { 137 priv->tda8290_easy_mode = 0x20; 138 mode = "L"; 139 } else if (params->std & V4L2_STD_SECAM_LC) { 140 priv->tda8290_easy_mode = 0x40; 141 mode = "LC"; 142 } else { 143 priv->tda8290_easy_mode = 0x10; 144 mode = "xx"; 145 } 146 147 if (params->mode == V4L2_TUNER_RADIO) { 148 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */ 149 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01; 150 tuner_dbg("setting to radio FM\n"); 151 } else { 152 tuner_dbg("setting tda829x to system %s\n", mode); 153 } 154 } 155 156 static struct { 157 unsigned char seq[2]; 158 } fm_mode[] = { 159 { { 0x01, 0x81} }, /* Put device into expert mode */ 160 { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */ 161 { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */ 162 { { 0x05, 0x04} }, /* ADC headroom */ 163 { { 0x06, 0x10} }, /* group delay flat */ 164 165 { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */ 166 { { 0x08, 0x00} }, 167 { { 0x09, 0x80} }, 168 { { 0x0a, 0xda} }, 169 { { 0x0b, 0x4b} }, 170 { { 0x0c, 0x68} }, 171 172 { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */ 173 { { 0x14, 0x00} }, /* disable auto mute if no video */ 174 }; 175 176 static void tda8290_set_params(struct dvb_frontend *fe, 177 struct analog_parameters *params) 178 { 179 struct tda8290_priv *priv = fe->analog_demod_priv; 180 181 unsigned char soft_reset[] = { 0x00, 0x00 }; 182 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode }; 183 unsigned char expert_mode[] = { 0x01, 0x80 }; 184 unsigned char agc_out_on[] = { 0x02, 0x00 }; 185 unsigned char gainset_off[] = { 0x28, 0x14 }; 186 unsigned char if_agc_spd[] = { 0x0f, 0x88 }; 187 unsigned char adc_head_6[] = { 0x05, 0x04 }; 188 unsigned char adc_head_9[] = { 0x05, 0x02 }; 189 unsigned char adc_head_12[] = { 0x05, 0x01 }; 190 unsigned char pll_bw_nom[] = { 0x0d, 0x47 }; 191 unsigned char pll_bw_low[] = { 0x0d, 0x27 }; 192 unsigned char gainset_2[] = { 0x28, 0x64 }; 193 unsigned char agc_rst_on[] = { 0x0e, 0x0b }; 194 unsigned char agc_rst_off[] = { 0x0e, 0x09 }; 195 unsigned char if_agc_set[] = { 0x0f, 0x81 }; 196 unsigned char addr_adc_sat = 0x1a; 197 unsigned char addr_agc_stat = 0x1d; 198 unsigned char addr_pll_stat = 0x1b; 199 unsigned char adc_sat, agc_stat, 200 pll_stat; 201 int i; 202 203 set_audio(fe, params); 204 205 if (priv->cfg.config) 206 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config); 207 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2); 208 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2); 209 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2); 210 msleep(1); 211 212 if (params->mode == V4L2_TUNER_RADIO) { 213 unsigned char deemphasis[] = { 0x13, 1 }; 214 215 /* FIXME: allow using a different deemphasis */ 216 217 if (deemphasis_50) 218 deemphasis[1] = 2; 219 220 for (i = 0; i < ARRAY_SIZE(fm_mode); i++) 221 tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2); 222 223 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2); 224 } else { 225 expert_mode[1] = priv->tda8290_easy_mode + 0x80; 226 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2); 227 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2); 228 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2); 229 if (priv->tda8290_easy_mode & 0x60) 230 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2); 231 else 232 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2); 233 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2); 234 } 235 236 237 if (fe->ops.analog_ops.i2c_gate_ctrl) 238 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 239 240 if (fe->ops.tuner_ops.set_analog_params) 241 fe->ops.tuner_ops.set_analog_params(fe, params); 242 243 for (i = 0; i < 3; i++) { 244 tuner_i2c_xfer_send_recv(&priv->i2c_props, 245 &addr_pll_stat, 1, &pll_stat, 1); 246 if (pll_stat & 0x80) { 247 tuner_i2c_xfer_send_recv(&priv->i2c_props, 248 &addr_adc_sat, 1, 249 &adc_sat, 1); 250 tuner_i2c_xfer_send_recv(&priv->i2c_props, 251 &addr_agc_stat, 1, 252 &agc_stat, 1); 253 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); 254 break; 255 } else { 256 tuner_dbg("tda8290 not locked, no signal?\n"); 257 msleep(100); 258 } 259 } 260 /* adjust headroom resp. gain */ 261 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) { 262 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n", 263 agc_stat, adc_sat, pll_stat & 0x80); 264 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2); 265 msleep(100); 266 tuner_i2c_xfer_send_recv(&priv->i2c_props, 267 &addr_agc_stat, 1, &agc_stat, 1); 268 tuner_i2c_xfer_send_recv(&priv->i2c_props, 269 &addr_pll_stat, 1, &pll_stat, 1); 270 if ((agc_stat > 115) || !(pll_stat & 0x80)) { 271 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n", 272 agc_stat, pll_stat & 0x80); 273 if (priv->cfg.agcf) 274 priv->cfg.agcf(fe); 275 msleep(100); 276 tuner_i2c_xfer_send_recv(&priv->i2c_props, 277 &addr_agc_stat, 1, 278 &agc_stat, 1); 279 tuner_i2c_xfer_send_recv(&priv->i2c_props, 280 &addr_pll_stat, 1, 281 &pll_stat, 1); 282 if((agc_stat > 115) || !(pll_stat & 0x80)) { 283 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat); 284 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2); 285 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2); 286 msleep(100); 287 } 288 } 289 } 290 291 /* l/ l' deadlock? */ 292 if(priv->tda8290_easy_mode & 0x60) { 293 tuner_i2c_xfer_send_recv(&priv->i2c_props, 294 &addr_adc_sat, 1, 295 &adc_sat, 1); 296 tuner_i2c_xfer_send_recv(&priv->i2c_props, 297 &addr_pll_stat, 1, 298 &pll_stat, 1); 299 if ((adc_sat > 20) || !(pll_stat & 0x80)) { 300 tuner_dbg("trying to resolve SECAM L deadlock\n"); 301 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2); 302 msleep(40); 303 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2); 304 } 305 } 306 307 if (fe->ops.analog_ops.i2c_gate_ctrl) 308 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 309 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2); 310 } 311 312 /*---------------------------------------------------------------------*/ 313 314 static void tda8295_power(struct dvb_frontend *fe, int enable) 315 { 316 struct tda8290_priv *priv = fe->analog_demod_priv; 317 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */ 318 319 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 320 321 if (enable) 322 buf[1] = 0x01; 323 else 324 buf[1] = 0x03; 325 326 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 327 } 328 329 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable) 330 { 331 struct tda8290_priv *priv = fe->analog_demod_priv; 332 unsigned char buf[] = { 0x01, 0x00 }; 333 334 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 335 336 if (enable) 337 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */ 338 else 339 buf[1] = 0x00; /* reset active bit */ 340 341 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 342 } 343 344 static void tda8295_set_video_std(struct dvb_frontend *fe) 345 { 346 struct tda8290_priv *priv = fe->analog_demod_priv; 347 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode }; 348 349 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 350 351 tda8295_set_easy_mode(fe, 1); 352 msleep(20); 353 tda8295_set_easy_mode(fe, 0); 354 } 355 356 /*---------------------------------------------------------------------*/ 357 358 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable) 359 { 360 struct tda8290_priv *priv = fe->analog_demod_priv; 361 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */ 362 363 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 364 365 if (enable) 366 buf[1] &= ~0x40; 367 else 368 buf[1] |= 0x40; 369 370 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 371 } 372 373 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable) 374 { 375 struct tda8290_priv *priv = fe->analog_demod_priv; 376 unsigned char set_gpio_cf[] = { 0x44, 0x00 }; 377 unsigned char set_gpio_val[] = { 0x46, 0x00 }; 378 379 tuner_i2c_xfer_send_recv(&priv->i2c_props, 380 &set_gpio_cf[0], 1, &set_gpio_cf[1], 1); 381 tuner_i2c_xfer_send_recv(&priv->i2c_props, 382 &set_gpio_val[0], 1, &set_gpio_val[1], 1); 383 384 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */ 385 386 if (enable) { 387 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */ 388 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */ 389 } 390 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2); 391 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2); 392 } 393 394 static int tda8295_has_signal(struct dvb_frontend *fe) 395 { 396 struct tda8290_priv *priv = fe->analog_demod_priv; 397 398 unsigned char hvpll_stat = 0x26; 399 unsigned char ret; 400 401 tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1); 402 return (ret & 0x01) ? 65535 : 0; 403 } 404 405 /*---------------------------------------------------------------------*/ 406 407 static void tda8295_set_params(struct dvb_frontend *fe, 408 struct analog_parameters *params) 409 { 410 struct tda8290_priv *priv = fe->analog_demod_priv; 411 412 unsigned char blanking_mode[] = { 0x1d, 0x00 }; 413 414 set_audio(fe, params); 415 416 tuner_dbg("%s: freq = %d\n", __func__, params->frequency); 417 418 tda8295_power(fe, 1); 419 tda8295_agc1_out(fe, 1); 420 421 tuner_i2c_xfer_send_recv(&priv->i2c_props, 422 &blanking_mode[0], 1, &blanking_mode[1], 1); 423 424 tda8295_set_video_std(fe); 425 426 blanking_mode[1] = 0x03; 427 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); 428 msleep(20); 429 430 if (fe->ops.analog_ops.i2c_gate_ctrl) 431 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 432 433 if (fe->ops.tuner_ops.set_analog_params) 434 fe->ops.tuner_ops.set_analog_params(fe, params); 435 436 if (priv->cfg.agcf) 437 priv->cfg.agcf(fe); 438 439 if (tda8295_has_signal(fe)) 440 tuner_dbg("tda8295 is locked\n"); 441 else 442 tuner_dbg("tda8295 not locked, no signal?\n"); 443 444 if (fe->ops.analog_ops.i2c_gate_ctrl) 445 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 446 } 447 448 /*---------------------------------------------------------------------*/ 449 450 static int tda8290_has_signal(struct dvb_frontend *fe) 451 { 452 struct tda8290_priv *priv = fe->analog_demod_priv; 453 454 unsigned char i2c_get_afc[1] = { 0x1B }; 455 unsigned char afc = 0; 456 457 tuner_i2c_xfer_send_recv(&priv->i2c_props, 458 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1); 459 return (afc & 0x80)? 65535:0; 460 } 461 462 /*---------------------------------------------------------------------*/ 463 464 static void tda8290_standby(struct dvb_frontend *fe) 465 { 466 struct tda8290_priv *priv = fe->analog_demod_priv; 467 468 unsigned char cb1[] = { 0x30, 0xD0 }; 469 unsigned char tda8290_standby[] = { 0x00, 0x02 }; 470 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 }; 471 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2}; 472 473 if (fe->ops.analog_ops.i2c_gate_ctrl) 474 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 475 if (priv->ver & TDA8275A) 476 cb1[1] = 0x90; 477 i2c_transfer(priv->i2c_props.adap, &msg, 1); 478 if (fe->ops.analog_ops.i2c_gate_ctrl) 479 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 480 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2); 481 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); 482 } 483 484 static void tda8295_standby(struct dvb_frontend *fe) 485 { 486 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */ 487 488 tda8295_power(fe, 0); 489 } 490 491 static void tda8290_init_if(struct dvb_frontend *fe) 492 { 493 struct tda8290_priv *priv = fe->analog_demod_priv; 494 495 unsigned char set_VS[] = { 0x30, 0x6F }; 496 unsigned char set_GP00_CF[] = { 0x20, 0x01 }; 497 unsigned char set_GP01_CF[] = { 0x20, 0x0B }; 498 499 if ((priv->cfg.config == 1) || (priv->cfg.config == 2)) 500 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2); 501 else 502 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2); 503 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2); 504 } 505 506 static void tda8295_init_if(struct dvb_frontend *fe) 507 { 508 struct tda8290_priv *priv = fe->analog_demod_priv; 509 510 static unsigned char set_adc_ctl[] = { 0x33, 0x14 }; 511 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 }; 512 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 }; 513 static unsigned char set_pll_reg0[] = { 0x38, 0x23 }; 514 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 }; 515 static unsigned char set_pll_reg10[] = { 0x42, 0x61 }; 516 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b }; 517 518 tda8295_power(fe, 1); 519 520 tda8295_set_easy_mode(fe, 0); 521 tda8295_set_video_std(fe); 522 523 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2); 524 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2); 525 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2); 526 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2); 527 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2); 528 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2); 529 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2); 530 531 tda8295_agc1_out(fe, 0); 532 tda8295_agc2_out(fe, 0); 533 } 534 535 static void tda8290_init_tuner(struct dvb_frontend *fe) 536 { 537 struct tda8290_priv *priv = fe->analog_demod_priv; 538 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf, 539 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 }; 540 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b, 541 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b }; 542 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, 543 .buf=tda8275_init, .len = 14}; 544 if (priv->ver & TDA8275A) 545 msg.buf = tda8275a_init; 546 547 if (fe->ops.analog_ops.i2c_gate_ctrl) 548 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 549 i2c_transfer(priv->i2c_props.adap, &msg, 1); 550 if (fe->ops.analog_ops.i2c_gate_ctrl) 551 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 552 } 553 554 /*---------------------------------------------------------------------*/ 555 556 static void tda829x_release(struct dvb_frontend *fe) 557 { 558 struct tda8290_priv *priv = fe->analog_demod_priv; 559 560 /* only try to release the tuner if we've 561 * attached it from within this module */ 562 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A)) 563 if (fe->ops.tuner_ops.release) 564 fe->ops.tuner_ops.release(fe); 565 566 kfree(fe->analog_demod_priv); 567 fe->analog_demod_priv = NULL; 568 } 569 570 static struct tda18271_config tda829x_tda18271_config = { 571 .gate = TDA18271_GATE_ANALOG, 572 }; 573 574 static int tda829x_find_tuner(struct dvb_frontend *fe) 575 { 576 struct tda8290_priv *priv = fe->analog_demod_priv; 577 int i, ret, tuners_found; 578 u32 tuner_addrs; 579 u8 data; 580 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 }; 581 582 if (fe->ops.analog_ops.i2c_gate_ctrl) 583 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 584 585 /* probe for tuner chip */ 586 tuners_found = 0; 587 tuner_addrs = 0; 588 for (i = 0x60; i <= 0x63; i++) { 589 msg.addr = i; 590 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 591 if (ret == 1) { 592 tuners_found++; 593 tuner_addrs = (tuner_addrs << 8) + i; 594 } 595 } 596 /* if there is more than one tuner, we expect the right one is 597 behind the bridge and we choose the highest address that doesn't 598 give a response now 599 */ 600 601 if (fe->ops.analog_ops.i2c_gate_ctrl) 602 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 603 604 if (tuners_found > 1) 605 for (i = 0; i < tuners_found; i++) { 606 msg.addr = tuner_addrs & 0xff; 607 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 608 if (ret == 1) 609 tuner_addrs = tuner_addrs >> 8; 610 else 611 break; 612 } 613 614 if (tuner_addrs == 0) { 615 tuner_addrs = 0x60; 616 tuner_info("could not clearly identify tuner address, " 617 "defaulting to %x\n", tuner_addrs); 618 } else { 619 tuner_addrs = tuner_addrs & 0xff; 620 tuner_info("setting tuner address to %x\n", tuner_addrs); 621 } 622 priv->tda827x_addr = tuner_addrs; 623 msg.addr = tuner_addrs; 624 625 if (fe->ops.analog_ops.i2c_gate_ctrl) 626 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 627 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 628 629 if (ret != 1) { 630 tuner_warn("tuner access failed!\n"); 631 if (fe->ops.analog_ops.i2c_gate_ctrl) 632 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 633 return -EREMOTEIO; 634 } 635 636 if ((data == 0x83) || (data == 0x84)) { 637 priv->ver |= TDA18271; 638 tda829x_tda18271_config.config = priv->cfg.config; 639 tda829x_tda18271_config.std_map = priv->tda18271_std_map; 640 dvb_attach(tda18271_attach, fe, priv->tda827x_addr, 641 priv->i2c_props.adap, &tda829x_tda18271_config); 642 } else { 643 if ((data & 0x3c) == 0) 644 priv->ver |= TDA8275; 645 else 646 priv->ver |= TDA8275A; 647 648 dvb_attach(tda827x_attach, fe, priv->tda827x_addr, 649 priv->i2c_props.adap, &priv->cfg); 650 priv->cfg.switch_addr = priv->i2c_props.addr; 651 } 652 if (fe->ops.tuner_ops.init) 653 fe->ops.tuner_ops.init(fe); 654 655 if (fe->ops.tuner_ops.sleep) 656 fe->ops.tuner_ops.sleep(fe); 657 658 if (fe->ops.analog_ops.i2c_gate_ctrl) 659 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 660 661 return 0; 662 } 663 664 static int tda8290_probe(struct tuner_i2c_props *i2c_props) 665 { 666 #define TDA8290_ID 0x89 667 u8 reg = 0x1f, id; 668 struct i2c_msg msg_read[] = { 669 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 670 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 671 }; 672 673 /* detect tda8290 */ 674 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 675 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 676 __func__, reg); 677 return -ENODEV; 678 } 679 680 if (id == TDA8290_ID) { 681 if (debug) 682 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n", 683 __func__, i2c_adapter_id(i2c_props->adap), 684 i2c_props->addr); 685 return 0; 686 } 687 return -ENODEV; 688 } 689 690 static int tda8295_probe(struct tuner_i2c_props *i2c_props) 691 { 692 #define TDA8295_ID 0x8a 693 #define TDA8295C2_ID 0x8b 694 u8 reg = 0x2f, id; 695 struct i2c_msg msg_read[] = { 696 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 697 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 698 }; 699 700 /* detect tda8295 */ 701 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 702 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 703 __func__, reg); 704 return -ENODEV; 705 } 706 707 if ((id & 0xfe) == TDA8295_ID) { 708 if (debug) 709 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n", 710 __func__, (id == TDA8295_ID) ? 711 "tda8295c1" : "tda8295c2", 712 i2c_adapter_id(i2c_props->adap), 713 i2c_props->addr); 714 return 0; 715 } 716 717 return -ENODEV; 718 } 719 720 static struct analog_demod_ops tda8290_ops = { 721 .set_params = tda8290_set_params, 722 .has_signal = tda8290_has_signal, 723 .standby = tda8290_standby, 724 .release = tda829x_release, 725 .i2c_gate_ctrl = tda8290_i2c_bridge, 726 }; 727 728 static struct analog_demod_ops tda8295_ops = { 729 .set_params = tda8295_set_params, 730 .has_signal = tda8295_has_signal, 731 .standby = tda8295_standby, 732 .release = tda829x_release, 733 .i2c_gate_ctrl = tda8295_i2c_bridge, 734 }; 735 736 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe, 737 struct i2c_adapter *i2c_adap, u8 i2c_addr, 738 struct tda829x_config *cfg) 739 { 740 struct tda8290_priv *priv = NULL; 741 char *name; 742 743 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); 744 if (priv == NULL) 745 return NULL; 746 fe->analog_demod_priv = priv; 747 748 priv->i2c_props.addr = i2c_addr; 749 priv->i2c_props.adap = i2c_adap; 750 priv->i2c_props.name = "tda829x"; 751 if (cfg) { 752 priv->cfg.config = cfg->lna_cfg; 753 priv->tda18271_std_map = cfg->tda18271_std_map; 754 } 755 756 if (tda8290_probe(&priv->i2c_props) == 0) { 757 priv->ver = TDA8290; 758 memcpy(&fe->ops.analog_ops, &tda8290_ops, 759 sizeof(struct analog_demod_ops)); 760 } 761 762 if (tda8295_probe(&priv->i2c_props) == 0) { 763 priv->ver = TDA8295; 764 memcpy(&fe->ops.analog_ops, &tda8295_ops, 765 sizeof(struct analog_demod_ops)); 766 } 767 768 if (cfg && cfg->no_i2c_gate) 769 fe->ops.analog_ops.i2c_gate_ctrl = NULL; 770 771 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) { 772 tda8295_power(fe, 1); 773 if (tda829x_find_tuner(fe) < 0) 774 goto fail; 775 } 776 777 switch (priv->ver) { 778 case TDA8290: 779 name = "tda8290"; 780 break; 781 case TDA8295: 782 name = "tda8295"; 783 break; 784 case TDA8290 | TDA8275: 785 name = "tda8290+75"; 786 break; 787 case TDA8295 | TDA8275: 788 name = "tda8295+75"; 789 break; 790 case TDA8290 | TDA8275A: 791 name = "tda8290+75a"; 792 break; 793 case TDA8295 | TDA8275A: 794 name = "tda8295+75a"; 795 break; 796 case TDA8290 | TDA18271: 797 name = "tda8290+18271"; 798 break; 799 case TDA8295 | TDA18271: 800 name = "tda8295+18271"; 801 break; 802 default: 803 goto fail; 804 } 805 tuner_info("type set to %s\n", name); 806 807 fe->ops.analog_ops.info.name = name; 808 809 if (priv->ver & TDA8290) { 810 if (priv->ver & (TDA8275 | TDA8275A)) 811 tda8290_init_tuner(fe); 812 tda8290_init_if(fe); 813 } else if (priv->ver & TDA8295) 814 tda8295_init_if(fe); 815 816 return fe; 817 818 fail: 819 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops)); 820 821 tda829x_release(fe); 822 return NULL; 823 } 824 EXPORT_SYMBOL_GPL(tda829x_attach); 825 826 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr) 827 { 828 struct tuner_i2c_props i2c_props = { 829 .adap = i2c_adap, 830 .addr = i2c_addr, 831 }; 832 833 unsigned char soft_reset[] = { 0x00, 0x00 }; 834 unsigned char easy_mode_b[] = { 0x01, 0x02 }; 835 unsigned char easy_mode_g[] = { 0x01, 0x04 }; 836 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 }; 837 unsigned char addr_dto_lsb = 0x07; 838 unsigned char data; 839 #define PROBE_BUFFER_SIZE 8 840 unsigned char buf[PROBE_BUFFER_SIZE]; 841 int i; 842 843 /* rule out tda9887, which would return the same byte repeatedly */ 844 tuner_i2c_xfer_send_recv(&i2c_props, 845 soft_reset, 1, buf, PROBE_BUFFER_SIZE); 846 for (i = 1; i < PROBE_BUFFER_SIZE; i++) { 847 if (buf[i] != buf[0]) 848 break; 849 } 850 851 /* all bytes are equal, not a tda829x - probably a tda9887 */ 852 if (i == PROBE_BUFFER_SIZE) 853 return -ENODEV; 854 855 if ((tda8290_probe(&i2c_props) == 0) || 856 (tda8295_probe(&i2c_props) == 0)) 857 return 0; 858 859 /* fall back to old probing method */ 860 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2); 861 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 862 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1); 863 if (data == 0) { 864 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2); 865 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 866 tuner_i2c_xfer_send_recv(&i2c_props, 867 &addr_dto_lsb, 1, &data, 1); 868 if (data == 0x7b) { 869 return 0; 870 } 871 } 872 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3); 873 return -ENODEV; 874 } 875 EXPORT_SYMBOL_GPL(tda829x_probe); 876 877 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver"); 878 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky"); 879 MODULE_LICENSE("GPL"); 880 881 /* 882 * Overrides for Emacs so that we follow Linus's tabbing style. 883 * --------------------------------------------------------------------------- 884 * Local variables: 885 * c-basic-offset: 8 886 * End: 887 */ 888