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 if (fe->ops.analog_ops.i2c_gate_ctrl) 237 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 238 239 if (fe->ops.tuner_ops.set_analog_params) 240 fe->ops.tuner_ops.set_analog_params(fe, params); 241 242 for (i = 0; i < 3; i++) { 243 tuner_i2c_xfer_send_recv(&priv->i2c_props, 244 &addr_pll_stat, 1, &pll_stat, 1); 245 if (pll_stat & 0x80) { 246 tuner_i2c_xfer_send_recv(&priv->i2c_props, 247 &addr_adc_sat, 1, 248 &adc_sat, 1); 249 tuner_i2c_xfer_send_recv(&priv->i2c_props, 250 &addr_agc_stat, 1, 251 &agc_stat, 1); 252 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); 253 break; 254 } else { 255 tuner_dbg("tda8290 not locked, no signal?\n"); 256 msleep(100); 257 } 258 } 259 /* adjust headroom resp. gain */ 260 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) { 261 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n", 262 agc_stat, adc_sat, pll_stat & 0x80); 263 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2); 264 msleep(100); 265 tuner_i2c_xfer_send_recv(&priv->i2c_props, 266 &addr_agc_stat, 1, &agc_stat, 1); 267 tuner_i2c_xfer_send_recv(&priv->i2c_props, 268 &addr_pll_stat, 1, &pll_stat, 1); 269 if ((agc_stat > 115) || !(pll_stat & 0x80)) { 270 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n", 271 agc_stat, pll_stat & 0x80); 272 if (priv->cfg.agcf) 273 priv->cfg.agcf(fe); 274 msleep(100); 275 tuner_i2c_xfer_send_recv(&priv->i2c_props, 276 &addr_agc_stat, 1, 277 &agc_stat, 1); 278 tuner_i2c_xfer_send_recv(&priv->i2c_props, 279 &addr_pll_stat, 1, 280 &pll_stat, 1); 281 if((agc_stat > 115) || !(pll_stat & 0x80)) { 282 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat); 283 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2); 284 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2); 285 msleep(100); 286 } 287 } 288 } 289 290 /* l/ l' deadlock? */ 291 if(priv->tda8290_easy_mode & 0x60) { 292 tuner_i2c_xfer_send_recv(&priv->i2c_props, 293 &addr_adc_sat, 1, 294 &adc_sat, 1); 295 tuner_i2c_xfer_send_recv(&priv->i2c_props, 296 &addr_pll_stat, 1, 297 &pll_stat, 1); 298 if ((adc_sat > 20) || !(pll_stat & 0x80)) { 299 tuner_dbg("trying to resolve SECAM L deadlock\n"); 300 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2); 301 msleep(40); 302 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2); 303 } 304 } 305 306 if (fe->ops.analog_ops.i2c_gate_ctrl) 307 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 308 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2); 309 } 310 311 /*---------------------------------------------------------------------*/ 312 313 static void tda8295_power(struct dvb_frontend *fe, int enable) 314 { 315 struct tda8290_priv *priv = fe->analog_demod_priv; 316 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */ 317 318 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 319 320 if (enable) 321 buf[1] = 0x01; 322 else 323 buf[1] = 0x03; 324 325 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 326 } 327 328 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable) 329 { 330 struct tda8290_priv *priv = fe->analog_demod_priv; 331 unsigned char buf[] = { 0x01, 0x00 }; 332 333 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 334 335 if (enable) 336 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */ 337 else 338 buf[1] = 0x00; /* reset active bit */ 339 340 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 341 } 342 343 static void tda8295_set_video_std(struct dvb_frontend *fe) 344 { 345 struct tda8290_priv *priv = fe->analog_demod_priv; 346 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode }; 347 348 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 349 350 tda8295_set_easy_mode(fe, 1); 351 msleep(20); 352 tda8295_set_easy_mode(fe, 0); 353 } 354 355 /*---------------------------------------------------------------------*/ 356 357 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable) 358 { 359 struct tda8290_priv *priv = fe->analog_demod_priv; 360 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */ 361 362 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 363 364 if (enable) 365 buf[1] &= ~0x40; 366 else 367 buf[1] |= 0x40; 368 369 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 370 } 371 372 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable) 373 { 374 struct tda8290_priv *priv = fe->analog_demod_priv; 375 unsigned char set_gpio_cf[] = { 0x44, 0x00 }; 376 unsigned char set_gpio_val[] = { 0x46, 0x00 }; 377 378 tuner_i2c_xfer_send_recv(&priv->i2c_props, 379 &set_gpio_cf[0], 1, &set_gpio_cf[1], 1); 380 tuner_i2c_xfer_send_recv(&priv->i2c_props, 381 &set_gpio_val[0], 1, &set_gpio_val[1], 1); 382 383 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */ 384 385 if (enable) { 386 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */ 387 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */ 388 } 389 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2); 390 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2); 391 } 392 393 static int tda8295_has_signal(struct dvb_frontend *fe) 394 { 395 struct tda8290_priv *priv = fe->analog_demod_priv; 396 397 unsigned char hvpll_stat = 0x26; 398 unsigned char ret; 399 400 tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1); 401 return (ret & 0x01) ? 65535 : 0; 402 } 403 404 /*---------------------------------------------------------------------*/ 405 406 static void tda8295_set_params(struct dvb_frontend *fe, 407 struct analog_parameters *params) 408 { 409 struct tda8290_priv *priv = fe->analog_demod_priv; 410 411 unsigned char blanking_mode[] = { 0x1d, 0x00 }; 412 413 set_audio(fe, params); 414 415 tuner_dbg("%s: freq = %d\n", __func__, params->frequency); 416 417 tda8295_power(fe, 1); 418 tda8295_agc1_out(fe, 1); 419 420 tuner_i2c_xfer_send_recv(&priv->i2c_props, 421 &blanking_mode[0], 1, &blanking_mode[1], 1); 422 423 tda8295_set_video_std(fe); 424 425 blanking_mode[1] = 0x03; 426 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); 427 msleep(20); 428 429 if (fe->ops.analog_ops.i2c_gate_ctrl) 430 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 431 432 if (fe->ops.tuner_ops.set_analog_params) 433 fe->ops.tuner_ops.set_analog_params(fe, params); 434 435 if (priv->cfg.agcf) 436 priv->cfg.agcf(fe); 437 438 if (tda8295_has_signal(fe)) 439 tuner_dbg("tda8295 is locked\n"); 440 else 441 tuner_dbg("tda8295 not locked, no signal?\n"); 442 443 if (fe->ops.analog_ops.i2c_gate_ctrl) 444 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 445 } 446 447 /*---------------------------------------------------------------------*/ 448 449 static int tda8290_has_signal(struct dvb_frontend *fe) 450 { 451 struct tda8290_priv *priv = fe->analog_demod_priv; 452 453 unsigned char i2c_get_afc[1] = { 0x1B }; 454 unsigned char afc = 0; 455 456 tuner_i2c_xfer_send_recv(&priv->i2c_props, 457 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1); 458 return (afc & 0x80)? 65535:0; 459 } 460 461 /*---------------------------------------------------------------------*/ 462 463 static void tda8290_standby(struct dvb_frontend *fe) 464 { 465 struct tda8290_priv *priv = fe->analog_demod_priv; 466 467 unsigned char cb1[] = { 0x30, 0xD0 }; 468 unsigned char tda8290_standby[] = { 0x00, 0x02 }; 469 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 }; 470 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2}; 471 472 if (fe->ops.analog_ops.i2c_gate_ctrl) 473 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 474 if (priv->ver & TDA8275A) 475 cb1[1] = 0x90; 476 i2c_transfer(priv->i2c_props.adap, &msg, 1); 477 if (fe->ops.analog_ops.i2c_gate_ctrl) 478 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 479 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2); 480 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); 481 } 482 483 static void tda8295_standby(struct dvb_frontend *fe) 484 { 485 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */ 486 487 tda8295_power(fe, 0); 488 } 489 490 static void tda8290_init_if(struct dvb_frontend *fe) 491 { 492 struct tda8290_priv *priv = fe->analog_demod_priv; 493 494 unsigned char set_VS[] = { 0x30, 0x6F }; 495 unsigned char set_GP00_CF[] = { 0x20, 0x01 }; 496 unsigned char set_GP01_CF[] = { 0x20, 0x0B }; 497 498 if ((priv->cfg.config == 1) || (priv->cfg.config == 2)) 499 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2); 500 else 501 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2); 502 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2); 503 } 504 505 static void tda8295_init_if(struct dvb_frontend *fe) 506 { 507 struct tda8290_priv *priv = fe->analog_demod_priv; 508 509 static unsigned char set_adc_ctl[] = { 0x33, 0x14 }; 510 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 }; 511 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 }; 512 static unsigned char set_pll_reg0[] = { 0x38, 0x23 }; 513 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 }; 514 static unsigned char set_pll_reg10[] = { 0x42, 0x61 }; 515 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b }; 516 517 tda8295_power(fe, 1); 518 519 tda8295_set_easy_mode(fe, 0); 520 tda8295_set_video_std(fe); 521 522 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2); 523 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2); 524 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2); 525 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2); 526 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2); 527 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2); 528 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2); 529 530 tda8295_agc1_out(fe, 0); 531 tda8295_agc2_out(fe, 0); 532 } 533 534 static void tda8290_init_tuner(struct dvb_frontend *fe) 535 { 536 struct tda8290_priv *priv = fe->analog_demod_priv; 537 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf, 538 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 }; 539 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b, 540 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b }; 541 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, 542 .buf=tda8275_init, .len = 14}; 543 if (priv->ver & TDA8275A) 544 msg.buf = tda8275a_init; 545 546 if (fe->ops.analog_ops.i2c_gate_ctrl) 547 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 548 i2c_transfer(priv->i2c_props.adap, &msg, 1); 549 if (fe->ops.analog_ops.i2c_gate_ctrl) 550 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 551 } 552 553 /*---------------------------------------------------------------------*/ 554 555 static void tda829x_release(struct dvb_frontend *fe) 556 { 557 struct tda8290_priv *priv = fe->analog_demod_priv; 558 559 /* only try to release the tuner if we've 560 * attached it from within this module */ 561 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A)) 562 if (fe->ops.tuner_ops.release) 563 fe->ops.tuner_ops.release(fe); 564 565 kfree(fe->analog_demod_priv); 566 fe->analog_demod_priv = NULL; 567 } 568 569 static struct tda18271_config tda829x_tda18271_config = { 570 .gate = TDA18271_GATE_ANALOG, 571 }; 572 573 static int tda829x_find_tuner(struct dvb_frontend *fe) 574 { 575 struct tda8290_priv *priv = fe->analog_demod_priv; 576 int i, ret, tuners_found; 577 u32 tuner_addrs; 578 u8 data; 579 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 }; 580 581 if (fe->ops.analog_ops.i2c_gate_ctrl) 582 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 583 584 /* probe for tuner chip */ 585 tuners_found = 0; 586 tuner_addrs = 0; 587 for (i = 0x60; i <= 0x63; i++) { 588 msg.addr = i; 589 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 590 if (ret == 1) { 591 tuners_found++; 592 tuner_addrs = (tuner_addrs << 8) + i; 593 } 594 } 595 /* if there is more than one tuner, we expect the right one is 596 behind the bridge and we choose the highest address that doesn't 597 give a response now 598 */ 599 600 if (fe->ops.analog_ops.i2c_gate_ctrl) 601 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 602 603 if (tuners_found > 1) 604 for (i = 0; i < tuners_found; i++) { 605 msg.addr = tuner_addrs & 0xff; 606 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 607 if (ret == 1) 608 tuner_addrs = tuner_addrs >> 8; 609 else 610 break; 611 } 612 613 if (tuner_addrs == 0) { 614 tuner_addrs = 0x60; 615 tuner_info("could not clearly identify tuner address, " 616 "defaulting to %x\n", tuner_addrs); 617 } else { 618 tuner_addrs = tuner_addrs & 0xff; 619 tuner_info("setting tuner address to %x\n", tuner_addrs); 620 } 621 priv->tda827x_addr = tuner_addrs; 622 msg.addr = tuner_addrs; 623 624 if (fe->ops.analog_ops.i2c_gate_ctrl) 625 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 626 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 627 628 if (ret != 1) { 629 tuner_warn("tuner access failed!\n"); 630 if (fe->ops.analog_ops.i2c_gate_ctrl) 631 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 632 return -EREMOTEIO; 633 } 634 635 if ((data == 0x83) || (data == 0x84)) { 636 priv->ver |= TDA18271; 637 tda829x_tda18271_config.config = priv->cfg.config; 638 dvb_attach(tda18271_attach, fe, priv->tda827x_addr, 639 priv->i2c_props.adap, &tda829x_tda18271_config); 640 } else { 641 if ((data & 0x3c) == 0) 642 priv->ver |= TDA8275; 643 else 644 priv->ver |= TDA8275A; 645 646 dvb_attach(tda827x_attach, fe, priv->tda827x_addr, 647 priv->i2c_props.adap, &priv->cfg); 648 priv->cfg.switch_addr = priv->i2c_props.addr; 649 } 650 if (fe->ops.tuner_ops.init) 651 fe->ops.tuner_ops.init(fe); 652 653 if (fe->ops.tuner_ops.sleep) 654 fe->ops.tuner_ops.sleep(fe); 655 656 if (fe->ops.analog_ops.i2c_gate_ctrl) 657 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 658 659 return 0; 660 } 661 662 static int tda8290_probe(struct tuner_i2c_props *i2c_props) 663 { 664 #define TDA8290_ID 0x89 665 u8 reg = 0x1f, id; 666 struct i2c_msg msg_read[] = { 667 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 668 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 669 }; 670 671 /* detect tda8290 */ 672 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 673 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 674 __func__, reg); 675 return -ENODEV; 676 } 677 678 if (id == TDA8290_ID) { 679 if (debug) 680 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n", 681 __func__, i2c_adapter_id(i2c_props->adap), 682 i2c_props->addr); 683 return 0; 684 } 685 return -ENODEV; 686 } 687 688 static int tda8295_probe(struct tuner_i2c_props *i2c_props) 689 { 690 #define TDA8295_ID 0x8a 691 #define TDA8295C2_ID 0x8b 692 u8 reg = 0x2f, id; 693 struct i2c_msg msg_read[] = { 694 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 695 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 696 }; 697 698 /* detect tda8295 */ 699 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 700 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 701 __func__, reg); 702 return -ENODEV; 703 } 704 705 if ((id & 0xfe) == TDA8295_ID) { 706 if (debug) 707 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n", 708 __func__, (id == TDA8295_ID) ? 709 "tda8295c1" : "tda8295c2", 710 i2c_adapter_id(i2c_props->adap), 711 i2c_props->addr); 712 return 0; 713 } 714 715 return -ENODEV; 716 } 717 718 static struct analog_demod_ops tda8290_ops = { 719 .set_params = tda8290_set_params, 720 .has_signal = tda8290_has_signal, 721 .standby = tda8290_standby, 722 .release = tda829x_release, 723 .i2c_gate_ctrl = tda8290_i2c_bridge, 724 }; 725 726 static struct analog_demod_ops tda8295_ops = { 727 .set_params = tda8295_set_params, 728 .has_signal = tda8295_has_signal, 729 .standby = tda8295_standby, 730 .release = tda829x_release, 731 .i2c_gate_ctrl = tda8295_i2c_bridge, 732 }; 733 734 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe, 735 struct i2c_adapter *i2c_adap, u8 i2c_addr, 736 struct tda829x_config *cfg) 737 { 738 struct tda8290_priv *priv = NULL; 739 char *name; 740 741 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); 742 if (priv == NULL) 743 return NULL; 744 fe->analog_demod_priv = priv; 745 746 priv->i2c_props.addr = i2c_addr; 747 priv->i2c_props.adap = i2c_adap; 748 priv->i2c_props.name = "tda829x"; 749 if (cfg) 750 priv->cfg.config = cfg->lna_cfg; 751 752 if (tda8290_probe(&priv->i2c_props) == 0) { 753 priv->ver = TDA8290; 754 memcpy(&fe->ops.analog_ops, &tda8290_ops, 755 sizeof(struct analog_demod_ops)); 756 } 757 758 if (tda8295_probe(&priv->i2c_props) == 0) { 759 priv->ver = TDA8295; 760 memcpy(&fe->ops.analog_ops, &tda8295_ops, 761 sizeof(struct analog_demod_ops)); 762 } 763 764 if (cfg && cfg->no_i2c_gate) 765 fe->ops.analog_ops.i2c_gate_ctrl = NULL; 766 767 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) { 768 tda8295_power(fe, 1); 769 if (tda829x_find_tuner(fe) < 0) 770 goto fail; 771 } 772 773 switch (priv->ver) { 774 case TDA8290: 775 name = "tda8290"; 776 break; 777 case TDA8295: 778 name = "tda8295"; 779 break; 780 case TDA8290 | TDA8275: 781 name = "tda8290+75"; 782 break; 783 case TDA8295 | TDA8275: 784 name = "tda8295+75"; 785 break; 786 case TDA8290 | TDA8275A: 787 name = "tda8290+75a"; 788 break; 789 case TDA8295 | TDA8275A: 790 name = "tda8295+75a"; 791 break; 792 case TDA8290 | TDA18271: 793 name = "tda8290+18271"; 794 break; 795 case TDA8295 | TDA18271: 796 name = "tda8295+18271"; 797 break; 798 default: 799 goto fail; 800 } 801 tuner_info("type set to %s\n", name); 802 803 fe->ops.analog_ops.info.name = name; 804 805 if (priv->ver & TDA8290) { 806 if (priv->ver & (TDA8275 | TDA8275A)) 807 tda8290_init_tuner(fe); 808 tda8290_init_if(fe); 809 } else if (priv->ver & TDA8295) 810 tda8295_init_if(fe); 811 812 return fe; 813 814 fail: 815 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops)); 816 817 tda829x_release(fe); 818 return NULL; 819 } 820 EXPORT_SYMBOL_GPL(tda829x_attach); 821 822 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr) 823 { 824 struct tuner_i2c_props i2c_props = { 825 .adap = i2c_adap, 826 .addr = i2c_addr, 827 }; 828 829 unsigned char soft_reset[] = { 0x00, 0x00 }; 830 unsigned char easy_mode_b[] = { 0x01, 0x02 }; 831 unsigned char easy_mode_g[] = { 0x01, 0x04 }; 832 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 }; 833 unsigned char addr_dto_lsb = 0x07; 834 unsigned char data; 835 #define PROBE_BUFFER_SIZE 8 836 unsigned char buf[PROBE_BUFFER_SIZE]; 837 int i; 838 839 /* rule out tda9887, which would return the same byte repeatedly */ 840 tuner_i2c_xfer_send_recv(&i2c_props, 841 soft_reset, 1, buf, PROBE_BUFFER_SIZE); 842 for (i = 1; i < PROBE_BUFFER_SIZE; i++) { 843 if (buf[i] != buf[0]) 844 break; 845 } 846 847 /* all bytes are equal, not a tda829x - probably a tda9887 */ 848 if (i == PROBE_BUFFER_SIZE) 849 return -ENODEV; 850 851 if ((tda8290_probe(&i2c_props) == 0) || 852 (tda8295_probe(&i2c_props) == 0)) 853 return 0; 854 855 /* fall back to old probing method */ 856 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2); 857 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 858 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1); 859 if (data == 0) { 860 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2); 861 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 862 tuner_i2c_xfer_send_recv(&i2c_props, 863 &addr_dto_lsb, 1, &data, 1); 864 if (data == 0x7b) { 865 return 0; 866 } 867 } 868 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3); 869 return -ENODEV; 870 } 871 EXPORT_SYMBOL_GPL(tda829x_probe); 872 873 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver"); 874 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky"); 875 MODULE_LICENSE("GPL"); 876 877 /* 878 * Overrides for Emacs so that we follow Linus's tabbing style. 879 * --------------------------------------------------------------------------- 880 * Local variables: 881 * c-basic-offset: 8 882 * End: 883 */ 884