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 32static int debug; 33module_param(debug, int, 0644); 34MODULE_PARM_DESC(debug, "enable verbose debug messages"); 35 36static int deemphasis_50; 37module_param(deemphasis_50, int, 0644); 38MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis"); 39 40/* ---------------------------------------------------------------------- */ 41 42struct 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 61static 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 82static 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(&priv->i2c_props, msg, 1); 99 tuner_i2c_xfer_recv(&priv->i2c_props, &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 115static 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 156static 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 176static 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 }; 214 215 216 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 tda8290_i2c_bridge(fe, 1); 236 237 if (fe->ops.tuner_ops.set_analog_params) 238 fe->ops.tuner_ops.set_analog_params(fe, params); 239 240 for (i = 0; i < 3; i++) { 241 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1); 242 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1); 243 if (pll_stat & 0x80) { 244 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1); 245 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1); 246 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1); 247 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1); 248 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); 249 break; 250 } else { 251 tuner_dbg("tda8290 not locked, no signal?\n"); 252 msleep(100); 253 } 254 } 255 /* adjust headroom resp. gain */ 256 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) { 257 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n", 258 agc_stat, adc_sat, pll_stat & 0x80); 259 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2); 260 msleep(100); 261 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1); 262 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1); 263 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1); 264 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1); 265 if ((agc_stat > 115) || !(pll_stat & 0x80)) { 266 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n", 267 agc_stat, pll_stat & 0x80); 268 if (priv->cfg.agcf) 269 priv->cfg.agcf(fe); 270 msleep(100); 271 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1); 272 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1); 273 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1); 274 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1); 275 if((agc_stat > 115) || !(pll_stat & 0x80)) { 276 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat); 277 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2); 278 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2); 279 msleep(100); 280 } 281 } 282 } 283 284 /* l/ l' deadlock? */ 285 if(priv->tda8290_easy_mode & 0x60) { 286 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1); 287 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1); 288 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1); 289 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1); 290 if ((adc_sat > 20) || !(pll_stat & 0x80)) { 291 tuner_dbg("trying to resolve SECAM L deadlock\n"); 292 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2); 293 msleep(40); 294 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2); 295 } 296 } 297 298 tda8290_i2c_bridge(fe, 0); 299 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2); 300} 301 302/*---------------------------------------------------------------------*/ 303 304static void tda8295_power(struct dvb_frontend *fe, int enable) 305{ 306 struct tda8290_priv *priv = fe->analog_demod_priv; 307 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */ 308 309 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1); 310 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1); 311 312 if (enable) 313 buf[1] = 0x01; 314 else 315 buf[1] = 0x03; 316 317 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 318} 319 320static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable) 321{ 322 struct tda8290_priv *priv = fe->analog_demod_priv; 323 unsigned char buf[] = { 0x01, 0x00 }; 324 325 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1); 326 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1); 327 328 if (enable) 329 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */ 330 else 331 buf[1] = 0x00; /* reset active bit */ 332 333 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 334} 335 336static void tda8295_set_video_std(struct dvb_frontend *fe) 337{ 338 struct tda8290_priv *priv = fe->analog_demod_priv; 339 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode }; 340 341 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 342 343 tda8295_set_easy_mode(fe, 1); 344 msleep(20); 345 tda8295_set_easy_mode(fe, 0); 346} 347 348/*---------------------------------------------------------------------*/ 349 350static void tda8295_agc1_out(struct dvb_frontend *fe, int enable) 351{ 352 struct tda8290_priv *priv = fe->analog_demod_priv; 353 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */ 354 355 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1); 356 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1); 357 358 if (enable) 359 buf[1] &= ~0x40; 360 else 361 buf[1] |= 0x40; 362 363 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 364} 365 366static void tda8295_agc2_out(struct dvb_frontend *fe, int enable) 367{ 368 struct tda8290_priv *priv = fe->analog_demod_priv; 369 unsigned char set_gpio_cf[] = { 0x44, 0x00 }; 370 unsigned char set_gpio_val[] = { 0x46, 0x00 }; 371 372 tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1); 373 tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1); 374 tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1); 375 tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1); 376 377 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */ 378 379 if (enable) { 380 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */ 381 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */ 382 } 383 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2); 384 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2); 385} 386 387static int tda8295_has_signal(struct dvb_frontend *fe) 388{ 389 struct tda8290_priv *priv = fe->analog_demod_priv; 390 391 unsigned char hvpll_stat = 0x26; 392 unsigned char ret; 393 394 tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1); 395 tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1); 396 return (ret & 0x01) ? 65535 : 0; 397} 398 399/*---------------------------------------------------------------------*/ 400 401static void tda8295_set_params(struct dvb_frontend *fe, 402 struct analog_parameters *params) 403{ 404 struct tda8290_priv *priv = fe->analog_demod_priv; 405 406 unsigned char blanking_mode[] = { 0x1d, 0x00 }; 407 408 set_audio(fe, params); 409 410 tuner_dbg("%s: freq = %d\n", __func__, params->frequency); 411 412 tda8295_power(fe, 1); 413 tda8295_agc1_out(fe, 1); 414 415 tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1); 416 tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1); 417 418 tda8295_set_video_std(fe); 419 420 blanking_mode[1] = 0x03; 421 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); 422 msleep(20); 423 424 tda8295_i2c_bridge(fe, 1); 425 426 if (fe->ops.tuner_ops.set_analog_params) 427 fe->ops.tuner_ops.set_analog_params(fe, params); 428 429 if (priv->cfg.agcf) 430 priv->cfg.agcf(fe); 431 432 if (tda8295_has_signal(fe)) 433 tuner_dbg("tda8295 is locked\n"); 434 else 435 tuner_dbg("tda8295 not locked, no signal?\n"); 436 437 tda8295_i2c_bridge(fe, 0); 438} 439 440/*---------------------------------------------------------------------*/ 441 442static int tda8290_has_signal(struct dvb_frontend *fe) 443{ 444 struct tda8290_priv *priv = fe->analog_demod_priv; 445 446 unsigned char i2c_get_afc[1] = { 0x1B }; 447 unsigned char afc = 0; 448 449 tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc)); 450 tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1); 451 return (afc & 0x80)? 65535:0; 452} 453 454/*---------------------------------------------------------------------*/ 455 456static void tda8290_standby(struct dvb_frontend *fe) 457{ 458 struct tda8290_priv *priv = fe->analog_demod_priv; 459 460 unsigned char cb1[] = { 0x30, 0xD0 }; 461 unsigned char tda8290_standby[] = { 0x00, 0x02 }; 462 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 }; 463 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2}; 464 465 tda8290_i2c_bridge(fe, 1); 466 if (priv->ver & TDA8275A) 467 cb1[1] = 0x90; 468 i2c_transfer(priv->i2c_props.adap, &msg, 1); 469 tda8290_i2c_bridge(fe, 0); 470 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2); 471 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); 472} 473 474static void tda8295_standby(struct dvb_frontend *fe) 475{ 476 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */ 477 478 tda8295_power(fe, 0); 479} 480 481static void tda8290_init_if(struct dvb_frontend *fe) 482{ 483 struct tda8290_priv *priv = fe->analog_demod_priv; 484 485 unsigned char set_VS[] = { 0x30, 0x6F }; 486 unsigned char set_GP00_CF[] = { 0x20, 0x01 }; 487 unsigned char set_GP01_CF[] = { 0x20, 0x0B }; 488 489 if ((priv->cfg.config == 1) || (priv->cfg.config == 2)) 490 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2); 491 else 492 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2); 493 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2); 494} 495 496static void tda8295_init_if(struct dvb_frontend *fe) 497{ 498 struct tda8290_priv *priv = fe->analog_demod_priv; 499 500 static unsigned char set_adc_ctl[] = { 0x33, 0x14 }; 501 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 }; 502 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 }; 503 static unsigned char set_pll_reg0[] = { 0x38, 0x23 }; 504 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 }; 505 static unsigned char set_pll_reg10[] = { 0x42, 0x61 }; 506 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b }; 507 508 tda8295_power(fe, 1); 509 510 tda8295_set_easy_mode(fe, 0); 511 tda8295_set_video_std(fe); 512 513 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2); 514 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2); 515 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2); 516 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2); 517 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2); 518 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2); 519 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2); 520 521 tda8295_agc1_out(fe, 0); 522 tda8295_agc2_out(fe, 0); 523} 524 525static void tda8290_init_tuner(struct dvb_frontend *fe) 526{ 527 struct tda8290_priv *priv = fe->analog_demod_priv; 528 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf, 529 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 }; 530 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b, 531 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b }; 532 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, 533 .buf=tda8275_init, .len = 14}; 534 if (priv->ver & TDA8275A) 535 msg.buf = tda8275a_init; 536 537 tda8290_i2c_bridge(fe, 1); 538 i2c_transfer(priv->i2c_props.adap, &msg, 1); 539 tda8290_i2c_bridge(fe, 0); 540} 541 542/*---------------------------------------------------------------------*/ 543 544static void tda829x_release(struct dvb_frontend *fe) 545{ 546 struct tda8290_priv *priv = fe->analog_demod_priv; 547 548 /* only try to release the tuner if we've 549 * attached it from within this module */ 550 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A)) 551 if (fe->ops.tuner_ops.release) 552 fe->ops.tuner_ops.release(fe); 553 554 kfree(fe->analog_demod_priv); 555 fe->analog_demod_priv = NULL; 556} 557 558static struct tda18271_config tda829x_tda18271_config = { 559 .gate = TDA18271_GATE_ANALOG, 560}; 561 562static int tda829x_find_tuner(struct dvb_frontend *fe) 563{ 564 struct tda8290_priv *priv = fe->analog_demod_priv; 565 struct analog_demod_ops *analog_ops = &fe->ops.analog_ops; 566 int i, ret, tuners_found; 567 u32 tuner_addrs; 568 u8 data; 569 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 }; 570 571 if (!analog_ops->i2c_gate_ctrl) { 572 printk(KERN_ERR "tda8290: no gate control were provided!\n"); 573 574 return -EINVAL; 575 } 576 577 analog_ops->i2c_gate_ctrl(fe, 1); 578 579 /* probe for tuner chip */ 580 tuners_found = 0; 581 tuner_addrs = 0; 582 for (i = 0x60; i <= 0x63; i++) { 583 msg.addr = i; 584 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 585 if (ret == 1) { 586 tuners_found++; 587 tuner_addrs = (tuner_addrs << 8) + i; 588 } 589 } 590 /* if there is more than one tuner, we expect the right one is 591 behind the bridge and we choose the highest address that doesn't 592 give a response now 593 */ 594 595 analog_ops->i2c_gate_ctrl(fe, 0); 596 597 if (tuners_found > 1) 598 for (i = 0; i < tuners_found; i++) { 599 msg.addr = tuner_addrs & 0xff; 600 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 601 if (ret == 1) 602 tuner_addrs = tuner_addrs >> 8; 603 else 604 break; 605 } 606 607 if (tuner_addrs == 0) { 608 tuner_addrs = 0x60; 609 tuner_info("could not clearly identify tuner address, " 610 "defaulting to %x\n", tuner_addrs); 611 } else { 612 tuner_addrs = tuner_addrs & 0xff; 613 tuner_info("setting tuner address to %x\n", tuner_addrs); 614 } 615 priv->tda827x_addr = tuner_addrs; 616 msg.addr = tuner_addrs; 617 618 analog_ops->i2c_gate_ctrl(fe, 1); 619 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 620 621 if (ret != 1) { 622 tuner_warn("tuner access failed!\n"); 623 analog_ops->i2c_gate_ctrl(fe, 0); 624 return -EREMOTEIO; 625 } 626 627 if ((data == 0x83) || (data == 0x84)) { 628 priv->ver |= TDA18271; 629 tda829x_tda18271_config.config = priv->cfg.config; 630 dvb_attach(tda18271_attach, fe, priv->tda827x_addr, 631 priv->i2c_props.adap, &tda829x_tda18271_config); 632 } else { 633 if ((data & 0x3c) == 0) 634 priv->ver |= TDA8275; 635 else 636 priv->ver |= TDA8275A; 637 638 dvb_attach(tda827x_attach, fe, priv->tda827x_addr, 639 priv->i2c_props.adap, &priv->cfg); 640 priv->cfg.switch_addr = priv->i2c_props.addr; 641 } 642 if (fe->ops.tuner_ops.init) 643 fe->ops.tuner_ops.init(fe); 644 645 if (fe->ops.tuner_ops.sleep) 646 fe->ops.tuner_ops.sleep(fe); 647 648 analog_ops->i2c_gate_ctrl(fe, 0); 649 650 return 0; 651} 652 653static int tda8290_probe(struct tuner_i2c_props *i2c_props) 654{ 655#define TDA8290_ID 0x89 656 unsigned char tda8290_id[] = { 0x1f, 0x00 }; 657 658 /* detect tda8290 */ 659 tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1); 660 tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1); 661 662 if (tda8290_id[1] == TDA8290_ID) { 663 if (debug) 664 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n", 665 __func__, i2c_adapter_id(i2c_props->adap), 666 i2c_props->addr); 667 return 0; 668 } 669 670 return -ENODEV; 671} 672 673static int tda8295_probe(struct tuner_i2c_props *i2c_props) 674{ 675#define TDA8295_ID 0x8a 676#define TDA8295C2_ID 0x8b 677 unsigned char tda8295_id[] = { 0x2f, 0x00 }; 678 679 /* detect tda8295 */ 680 tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1); 681 tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1); 682 683 if ((tda8295_id[1] & 0xfe) == TDA8295_ID) { 684 if (debug) 685 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n", 686 __func__, (tda8295_id[1] == TDA8295_ID) ? 687 "tda8295c1" : "tda8295c2", 688 i2c_adapter_id(i2c_props->adap), 689 i2c_props->addr); 690 return 0; 691 } 692 693 return -ENODEV; 694} 695 696static struct analog_demod_ops tda8290_ops = { 697 .set_params = tda8290_set_params, 698 .has_signal = tda8290_has_signal, 699 .standby = tda8290_standby, 700 .release = tda829x_release, 701 .i2c_gate_ctrl = tda8290_i2c_bridge, 702}; 703 704static struct analog_demod_ops tda8295_ops = { 705 .set_params = tda8295_set_params, 706 .has_signal = tda8295_has_signal, 707 .standby = tda8295_standby, 708 .release = tda829x_release, 709 .i2c_gate_ctrl = tda8295_i2c_bridge, 710}; 711 712struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe, 713 struct i2c_adapter *i2c_adap, u8 i2c_addr, 714 struct tda829x_config *cfg) 715{ 716 struct tda8290_priv *priv = NULL; 717 char *name; 718 719 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); 720 if (priv == NULL) 721 return NULL; 722 fe->analog_demod_priv = priv; 723 724 priv->i2c_props.addr = i2c_addr; 725 priv->i2c_props.adap = i2c_adap; 726 priv->i2c_props.name = "tda829x"; 727 if (cfg) 728 priv->cfg.config = cfg->lna_cfg; 729 730 if (tda8290_probe(&priv->i2c_props) == 0) { 731 priv->ver = TDA8290; 732 memcpy(&fe->ops.analog_ops, &tda8290_ops, 733 sizeof(struct analog_demod_ops)); 734 } 735 736 if (tda8295_probe(&priv->i2c_props) == 0) { 737 priv->ver = TDA8295; 738 memcpy(&fe->ops.analog_ops, &tda8295_ops, 739 sizeof(struct analog_demod_ops)); 740 } 741 742 if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) && 743 (tda829x_find_tuner(fe) < 0)) 744 goto fail; 745 746 switch (priv->ver) { 747 case TDA8290: 748 name = "tda8290"; 749 break; 750 case TDA8295: 751 name = "tda8295"; 752 break; 753 case TDA8290 | TDA8275: 754 name = "tda8290+75"; 755 break; 756 case TDA8295 | TDA8275: 757 name = "tda8295+75"; 758 break; 759 case TDA8290 | TDA8275A: 760 name = "tda8290+75a"; 761 break; 762 case TDA8295 | TDA8275A: 763 name = "tda8295+75a"; 764 break; 765 case TDA8290 | TDA18271: 766 name = "tda8290+18271"; 767 break; 768 case TDA8295 | TDA18271: 769 name = "tda8295+18271"; 770 break; 771 default: 772 goto fail; 773 } 774 tuner_info("type set to %s\n", name); 775 776 fe->ops.analog_ops.info.name = name; 777 778 if (priv->ver & TDA8290) { 779 if (priv->ver & (TDA8275 | TDA8275A)) 780 tda8290_init_tuner(fe); 781 tda8290_init_if(fe); 782 } else if (priv->ver & TDA8295) 783 tda8295_init_if(fe); 784 785 return fe; 786 787fail: 788 tda829x_release(fe); 789 return NULL; 790} 791EXPORT_SYMBOL_GPL(tda829x_attach); 792 793int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr) 794{ 795 struct tuner_i2c_props i2c_props = { 796 .adap = i2c_adap, 797 .addr = i2c_addr, 798 }; 799 800 unsigned char soft_reset[] = { 0x00, 0x00 }; 801 unsigned char easy_mode_b[] = { 0x01, 0x02 }; 802 unsigned char easy_mode_g[] = { 0x01, 0x04 }; 803 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 }; 804 unsigned char addr_dto_lsb = 0x07; 805 unsigned char data; 806#define PROBE_BUFFER_SIZE 8 807 unsigned char buf[PROBE_BUFFER_SIZE]; 808 int i; 809 810 /* rule out tda9887, which would return the same byte repeatedly */ 811 tuner_i2c_xfer_send(&i2c_props, soft_reset, 1); 812 tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE); 813 for (i = 1; i < PROBE_BUFFER_SIZE; i++) { 814 if (buf[i] != buf[0]) 815 break; 816 } 817 818 /* all bytes are equal, not a tda829x - probably a tda9887 */ 819 if (i == PROBE_BUFFER_SIZE) 820 return -ENODEV; 821 822 if ((tda8290_probe(&i2c_props) == 0) || 823 (tda8295_probe(&i2c_props) == 0)) 824 return 0; 825 826 /* fall back to old probing method */ 827 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2); 828 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 829 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1); 830 tuner_i2c_xfer_recv(&i2c_props, &data, 1); 831 if (data == 0) { 832 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2); 833 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 834 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1); 835 tuner_i2c_xfer_recv(&i2c_props, &data, 1); 836 if (data == 0x7b) { 837 return 0; 838 } 839 } 840 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3); 841 return -ENODEV; 842} 843EXPORT_SYMBOL_GPL(tda829x_probe); 844 845MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver"); 846MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky"); 847MODULE_LICENSE("GPL"); 848 849/* 850 * Overrides for Emacs so that we follow Linus's tabbing style. 851 * --------------------------------------------------------------------------- 852 * Local variables: 853 * c-basic-offset: 8 854 * End: 855 */ 856