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, u16 *signal) 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 *signal = (ret & 0x01) ? 65535 : 0; 403 return 0; 404 } 405 406 /*---------------------------------------------------------------------*/ 407 408 static void tda8295_set_params(struct dvb_frontend *fe, 409 struct analog_parameters *params) 410 { 411 struct tda8290_priv *priv = fe->analog_demod_priv; 412 u16 signal = 0; 413 unsigned char blanking_mode[] = { 0x1d, 0x00 }; 414 415 set_audio(fe, params); 416 417 tuner_dbg("%s: freq = %d\n", __func__, params->frequency); 418 419 tda8295_power(fe, 1); 420 tda8295_agc1_out(fe, 1); 421 422 tuner_i2c_xfer_send_recv(&priv->i2c_props, 423 &blanking_mode[0], 1, &blanking_mode[1], 1); 424 425 tda8295_set_video_std(fe); 426 427 blanking_mode[1] = 0x03; 428 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); 429 msleep(20); 430 431 if (fe->ops.analog_ops.i2c_gate_ctrl) 432 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 433 434 if (fe->ops.tuner_ops.set_analog_params) 435 fe->ops.tuner_ops.set_analog_params(fe, params); 436 437 if (priv->cfg.agcf) 438 priv->cfg.agcf(fe); 439 440 tda8295_has_signal(fe, &signal); 441 if (signal) 442 tuner_dbg("tda8295 is locked\n"); 443 else 444 tuner_dbg("tda8295 not locked, no signal?\n"); 445 446 if (fe->ops.analog_ops.i2c_gate_ctrl) 447 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 448 } 449 450 /*---------------------------------------------------------------------*/ 451 452 static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal) 453 { 454 struct tda8290_priv *priv = fe->analog_demod_priv; 455 456 unsigned char i2c_get_afc[1] = { 0x1B }; 457 unsigned char afc = 0; 458 459 tuner_i2c_xfer_send_recv(&priv->i2c_props, 460 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1); 461 *signal = (afc & 0x80) ? 65535 : 0; 462 return 0; 463 } 464 465 /*---------------------------------------------------------------------*/ 466 467 static void tda8290_standby(struct dvb_frontend *fe) 468 { 469 struct tda8290_priv *priv = fe->analog_demod_priv; 470 471 unsigned char cb1[] = { 0x30, 0xD0 }; 472 unsigned char tda8290_standby[] = { 0x00, 0x02 }; 473 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 }; 474 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2}; 475 476 if (fe->ops.analog_ops.i2c_gate_ctrl) 477 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 478 if (priv->ver & TDA8275A) 479 cb1[1] = 0x90; 480 i2c_transfer(priv->i2c_props.adap, &msg, 1); 481 if (fe->ops.analog_ops.i2c_gate_ctrl) 482 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 483 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2); 484 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); 485 } 486 487 static void tda8295_standby(struct dvb_frontend *fe) 488 { 489 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */ 490 491 tda8295_power(fe, 0); 492 } 493 494 static void tda8290_init_if(struct dvb_frontend *fe) 495 { 496 struct tda8290_priv *priv = fe->analog_demod_priv; 497 498 unsigned char set_VS[] = { 0x30, 0x6F }; 499 unsigned char set_GP00_CF[] = { 0x20, 0x01 }; 500 unsigned char set_GP01_CF[] = { 0x20, 0x0B }; 501 502 if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) || 503 (priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF)) 504 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2); 505 else 506 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2); 507 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2); 508 } 509 510 static void tda8295_init_if(struct dvb_frontend *fe) 511 { 512 struct tda8290_priv *priv = fe->analog_demod_priv; 513 514 static unsigned char set_adc_ctl[] = { 0x33, 0x14 }; 515 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 }; 516 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 }; 517 static unsigned char set_pll_reg0[] = { 0x38, 0x23 }; 518 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 }; 519 static unsigned char set_pll_reg10[] = { 0x42, 0x61 }; 520 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b }; 521 522 tda8295_power(fe, 1); 523 524 tda8295_set_easy_mode(fe, 0); 525 tda8295_set_video_std(fe); 526 527 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2); 528 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2); 529 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2); 530 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2); 531 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2); 532 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2); 533 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2); 534 535 tda8295_agc1_out(fe, 0); 536 tda8295_agc2_out(fe, 0); 537 } 538 539 static void tda8290_init_tuner(struct dvb_frontend *fe) 540 { 541 struct tda8290_priv *priv = fe->analog_demod_priv; 542 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf, 543 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 }; 544 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b, 545 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b }; 546 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, 547 .buf=tda8275_init, .len = 14}; 548 if (priv->ver & TDA8275A) 549 msg.buf = tda8275a_init; 550 551 if (fe->ops.analog_ops.i2c_gate_ctrl) 552 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 553 i2c_transfer(priv->i2c_props.adap, &msg, 1); 554 if (fe->ops.analog_ops.i2c_gate_ctrl) 555 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 556 } 557 558 /*---------------------------------------------------------------------*/ 559 560 static void tda829x_release(struct dvb_frontend *fe) 561 { 562 struct tda8290_priv *priv = fe->analog_demod_priv; 563 564 /* only try to release the tuner if we've 565 * attached it from within this module */ 566 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A)) 567 if (fe->ops.tuner_ops.release) 568 fe->ops.tuner_ops.release(fe); 569 570 kfree(fe->analog_demod_priv); 571 fe->analog_demod_priv = NULL; 572 } 573 574 static struct tda18271_config tda829x_tda18271_config = { 575 .gate = TDA18271_GATE_ANALOG, 576 }; 577 578 static int tda829x_find_tuner(struct dvb_frontend *fe) 579 { 580 struct tda8290_priv *priv = fe->analog_demod_priv; 581 int i, ret, tuners_found; 582 u32 tuner_addrs; 583 u8 data; 584 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 }; 585 586 if (fe->ops.analog_ops.i2c_gate_ctrl) 587 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 588 589 /* probe for tuner chip */ 590 tuners_found = 0; 591 tuner_addrs = 0; 592 for (i = 0x60; i <= 0x63; i++) { 593 msg.addr = i; 594 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 595 if (ret == 1) { 596 tuners_found++; 597 tuner_addrs = (tuner_addrs << 8) + i; 598 } 599 } 600 /* if there is more than one tuner, we expect the right one is 601 behind the bridge and we choose the highest address that doesn't 602 give a response now 603 */ 604 605 if (fe->ops.analog_ops.i2c_gate_ctrl) 606 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 607 608 if (tuners_found > 1) 609 for (i = 0; i < tuners_found; i++) { 610 msg.addr = tuner_addrs & 0xff; 611 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 612 if (ret == 1) 613 tuner_addrs = tuner_addrs >> 8; 614 else 615 break; 616 } 617 618 if (tuner_addrs == 0) { 619 tuner_addrs = 0x60; 620 tuner_info("could not clearly identify tuner address, defaulting to %x\n", 621 tuner_addrs); 622 } else { 623 tuner_addrs = tuner_addrs & 0xff; 624 tuner_info("setting tuner address to %x\n", tuner_addrs); 625 } 626 priv->tda827x_addr = tuner_addrs; 627 msg.addr = tuner_addrs; 628 629 if (fe->ops.analog_ops.i2c_gate_ctrl) 630 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 631 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 632 633 if (ret != 1) { 634 tuner_warn("tuner access failed!\n"); 635 if (fe->ops.analog_ops.i2c_gate_ctrl) 636 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 637 return -EREMOTEIO; 638 } 639 640 if ((data == 0x83) || (data == 0x84)) { 641 priv->ver |= TDA18271; 642 tda829x_tda18271_config.config = priv->cfg.config; 643 tda829x_tda18271_config.std_map = priv->tda18271_std_map; 644 dvb_attach(tda18271_attach, fe, priv->tda827x_addr, 645 priv->i2c_props.adap, &tda829x_tda18271_config); 646 } else { 647 if ((data & 0x3c) == 0) 648 priv->ver |= TDA8275; 649 else 650 priv->ver |= TDA8275A; 651 652 dvb_attach(tda827x_attach, fe, priv->tda827x_addr, 653 priv->i2c_props.adap, &priv->cfg); 654 priv->cfg.switch_addr = priv->i2c_props.addr; 655 } 656 if (fe->ops.tuner_ops.init) 657 fe->ops.tuner_ops.init(fe); 658 659 if (fe->ops.tuner_ops.sleep) 660 fe->ops.tuner_ops.sleep(fe); 661 662 if (fe->ops.analog_ops.i2c_gate_ctrl) 663 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 664 665 return 0; 666 } 667 668 static int tda8290_probe(struct tuner_i2c_props *i2c_props) 669 { 670 #define TDA8290_ID 0x89 671 u8 reg = 0x1f, id; 672 struct i2c_msg msg_read[] = { 673 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 674 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 675 }; 676 677 /* detect tda8290 */ 678 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 679 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 680 __func__, reg); 681 return -ENODEV; 682 } 683 684 if (id == TDA8290_ID) { 685 if (debug) 686 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n", 687 __func__, i2c_adapter_id(i2c_props->adap), 688 i2c_props->addr); 689 return 0; 690 } 691 return -ENODEV; 692 } 693 694 static int tda8295_probe(struct tuner_i2c_props *i2c_props) 695 { 696 #define TDA8295_ID 0x8a 697 #define TDA8295C2_ID 0x8b 698 u8 reg = 0x2f, id; 699 struct i2c_msg msg_read[] = { 700 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 701 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 702 }; 703 704 /* detect tda8295 */ 705 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 706 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 707 __func__, reg); 708 return -ENODEV; 709 } 710 711 if ((id & 0xfe) == TDA8295_ID) { 712 if (debug) 713 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n", 714 __func__, (id == TDA8295_ID) ? 715 "tda8295c1" : "tda8295c2", 716 i2c_adapter_id(i2c_props->adap), 717 i2c_props->addr); 718 return 0; 719 } 720 721 return -ENODEV; 722 } 723 724 static const struct analog_demod_ops tda8290_ops = { 725 .set_params = tda8290_set_params, 726 .has_signal = tda8290_has_signal, 727 .standby = tda8290_standby, 728 .release = tda829x_release, 729 .i2c_gate_ctrl = tda8290_i2c_bridge, 730 }; 731 732 static const struct analog_demod_ops tda8295_ops = { 733 .set_params = tda8295_set_params, 734 .has_signal = tda8295_has_signal, 735 .standby = tda8295_standby, 736 .release = tda829x_release, 737 .i2c_gate_ctrl = tda8295_i2c_bridge, 738 }; 739 740 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe, 741 struct i2c_adapter *i2c_adap, u8 i2c_addr, 742 struct tda829x_config *cfg) 743 { 744 struct tda8290_priv *priv = NULL; 745 char *name; 746 747 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); 748 if (priv == NULL) 749 return NULL; 750 fe->analog_demod_priv = priv; 751 752 priv->i2c_props.addr = i2c_addr; 753 priv->i2c_props.adap = i2c_adap; 754 priv->i2c_props.name = "tda829x"; 755 if (cfg) { 756 priv->cfg.config = cfg->lna_cfg; 757 priv->tda18271_std_map = cfg->tda18271_std_map; 758 } 759 760 if (tda8290_probe(&priv->i2c_props) == 0) { 761 priv->ver = TDA8290; 762 memcpy(&fe->ops.analog_ops, &tda8290_ops, 763 sizeof(struct analog_demod_ops)); 764 } 765 766 if (tda8295_probe(&priv->i2c_props) == 0) { 767 priv->ver = TDA8295; 768 memcpy(&fe->ops.analog_ops, &tda8295_ops, 769 sizeof(struct analog_demod_ops)); 770 } 771 772 if (cfg && cfg->no_i2c_gate) 773 fe->ops.analog_ops.i2c_gate_ctrl = NULL; 774 775 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) { 776 tda8295_power(fe, 1); 777 if (tda829x_find_tuner(fe) < 0) 778 goto fail; 779 } 780 781 switch (priv->ver) { 782 case TDA8290: 783 name = "tda8290"; 784 break; 785 case TDA8295: 786 name = "tda8295"; 787 break; 788 case TDA8290 | TDA8275: 789 name = "tda8290+75"; 790 break; 791 case TDA8295 | TDA8275: 792 name = "tda8295+75"; 793 break; 794 case TDA8290 | TDA8275A: 795 name = "tda8290+75a"; 796 break; 797 case TDA8295 | TDA8275A: 798 name = "tda8295+75a"; 799 break; 800 case TDA8290 | TDA18271: 801 name = "tda8290+18271"; 802 break; 803 case TDA8295 | TDA18271: 804 name = "tda8295+18271"; 805 break; 806 default: 807 goto fail; 808 } 809 tuner_info("type set to %s\n", name); 810 811 fe->ops.analog_ops.info.name = name; 812 813 if (priv->ver & TDA8290) { 814 if (priv->ver & (TDA8275 | TDA8275A)) 815 tda8290_init_tuner(fe); 816 tda8290_init_if(fe); 817 } else if (priv->ver & TDA8295) 818 tda8295_init_if(fe); 819 820 return fe; 821 822 fail: 823 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops)); 824 825 tda829x_release(fe); 826 return NULL; 827 } 828 EXPORT_SYMBOL_GPL(tda829x_attach); 829 830 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr) 831 { 832 struct tuner_i2c_props i2c_props = { 833 .adap = i2c_adap, 834 .addr = i2c_addr, 835 }; 836 837 unsigned char soft_reset[] = { 0x00, 0x00 }; 838 unsigned char easy_mode_b[] = { 0x01, 0x02 }; 839 unsigned char easy_mode_g[] = { 0x01, 0x04 }; 840 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 }; 841 unsigned char addr_dto_lsb = 0x07; 842 unsigned char data; 843 #define PROBE_BUFFER_SIZE 8 844 unsigned char buf[PROBE_BUFFER_SIZE]; 845 int i; 846 847 /* rule out tda9887, which would return the same byte repeatedly */ 848 tuner_i2c_xfer_send_recv(&i2c_props, 849 soft_reset, 1, buf, PROBE_BUFFER_SIZE); 850 for (i = 1; i < PROBE_BUFFER_SIZE; i++) { 851 if (buf[i] != buf[0]) 852 break; 853 } 854 855 /* all bytes are equal, not a tda829x - probably a tda9887 */ 856 if (i == PROBE_BUFFER_SIZE) 857 return -ENODEV; 858 859 if ((tda8290_probe(&i2c_props) == 0) || 860 (tda8295_probe(&i2c_props) == 0)) 861 return 0; 862 863 /* fall back to old probing method */ 864 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2); 865 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 866 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1); 867 if (data == 0) { 868 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2); 869 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 870 tuner_i2c_xfer_send_recv(&i2c_props, 871 &addr_dto_lsb, 1, &data, 1); 872 if (data == 0x7b) { 873 return 0; 874 } 875 } 876 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3); 877 return -ENODEV; 878 } 879 EXPORT_SYMBOL_GPL(tda829x_probe); 880 881 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver"); 882 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky"); 883 MODULE_LICENSE("GPL"); 884