1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 4 i2c tv tuner chip device driver 5 controls the philips tda8290+75 tuner chip combo. 6 7 8 This "tda8290" module was split apart from the original "tuner" module. 9*/ 10 11#include <linux/i2c.h> 12#include <linux/slab.h> 13#include <linux/delay.h> 14#include <linux/videodev2.h> 15#include "tuner-i2c.h" 16#include "tda8290.h" 17#include "tda827x.h" 18#include "tda18271.h" 19 20static int debug; 21module_param(debug, int, 0644); 22MODULE_PARM_DESC(debug, "enable verbose debug messages"); 23 24static int deemphasis_50; 25module_param(deemphasis_50, int, 0644); 26MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis"); 27 28/* ---------------------------------------------------------------------- */ 29 30struct tda8290_priv { 31 struct tuner_i2c_props i2c_props; 32 33 unsigned char tda8290_easy_mode; 34 35 unsigned char tda827x_addr; 36 37 unsigned char ver; 38#define TDA8290 1 39#define TDA8295 2 40#define TDA8275 4 41#define TDA8275A 8 42#define TDA18271 16 43 44 struct tda827x_config cfg; 45 struct tda18271_std_map *tda18271_std_map; 46}; 47 48/*---------------------------------------------------------------------*/ 49 50static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close) 51{ 52 struct tda8290_priv *priv = fe->analog_demod_priv; 53 54 static unsigned char enable[2] = { 0x21, 0xC0 }; 55 static unsigned char disable[2] = { 0x21, 0x00 }; 56 unsigned char *msg; 57 58 if (close) { 59 msg = enable; 60 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 61 /* let the bridge stabilize */ 62 msleep(20); 63 } else { 64 msg = disable; 65 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 66 } 67 68 return 0; 69} 70 71static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close) 72{ 73 struct tda8290_priv *priv = fe->analog_demod_priv; 74 75 static unsigned char enable[2] = { 0x45, 0xc1 }; 76 static unsigned char disable[2] = { 0x46, 0x00 }; 77 static unsigned char buf[3] = { 0x45, 0x01, 0x00 }; 78 unsigned char *msg; 79 80 if (close) { 81 msg = enable; 82 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 83 /* let the bridge stabilize */ 84 msleep(20); 85 } else { 86 msg = disable; 87 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1); 88 89 buf[2] = msg[1]; 90 buf[2] &= ~0x04; 91 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3); 92 msleep(5); 93 94 msg[1] |= 0x04; 95 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); 96 } 97 98 return 0; 99} 100 101/*---------------------------------------------------------------------*/ 102 103static void set_audio(struct dvb_frontend *fe, 104 struct analog_parameters *params) 105{ 106 struct tda8290_priv *priv = fe->analog_demod_priv; 107 char* mode; 108 109 if (params->std & V4L2_STD_MN) { 110 priv->tda8290_easy_mode = 0x01; 111 mode = "MN"; 112 } else if (params->std & V4L2_STD_B) { 113 priv->tda8290_easy_mode = 0x02; 114 mode = "B"; 115 } else if (params->std & V4L2_STD_GH) { 116 priv->tda8290_easy_mode = 0x04; 117 mode = "GH"; 118 } else if (params->std & V4L2_STD_PAL_I) { 119 priv->tda8290_easy_mode = 0x08; 120 mode = "I"; 121 } else if (params->std & V4L2_STD_DK) { 122 priv->tda8290_easy_mode = 0x10; 123 mode = "DK"; 124 } else if (params->std & V4L2_STD_SECAM_L) { 125 priv->tda8290_easy_mode = 0x20; 126 mode = "L"; 127 } else if (params->std & V4L2_STD_SECAM_LC) { 128 priv->tda8290_easy_mode = 0x40; 129 mode = "LC"; 130 } else { 131 priv->tda8290_easy_mode = 0x10; 132 mode = "xx"; 133 } 134 135 if (params->mode == V4L2_TUNER_RADIO) { 136 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */ 137 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01; 138 tuner_dbg("setting to radio FM\n"); 139 } else { 140 tuner_dbg("setting tda829x to system %s\n", mode); 141 } 142} 143 144static struct { 145 unsigned char seq[2]; 146} fm_mode[] = { 147 { { 0x01, 0x81} }, /* Put device into expert mode */ 148 { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */ 149 { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */ 150 { { 0x05, 0x04} }, /* ADC headroom */ 151 { { 0x06, 0x10} }, /* group delay flat */ 152 153 { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */ 154 { { 0x08, 0x00} }, 155 { { 0x09, 0x80} }, 156 { { 0x0a, 0xda} }, 157 { { 0x0b, 0x4b} }, 158 { { 0x0c, 0x68} }, 159 160 { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */ 161 { { 0x14, 0x00} }, /* disable auto mute if no video */ 162}; 163 164static void tda8290_set_params(struct dvb_frontend *fe, 165 struct analog_parameters *params) 166{ 167 struct tda8290_priv *priv = fe->analog_demod_priv; 168 169 static unsigned char soft_reset[] = { 0x00, 0x00 }; 170 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode }; 171 static unsigned char expert_mode[] = { 0x01, 0x80 }; 172 static unsigned char agc_out_on[] = { 0x02, 0x00 }; 173 static unsigned char gainset_off[] = { 0x28, 0x14 }; 174 static unsigned char if_agc_spd[] = { 0x0f, 0x88 }; 175 static unsigned char adc_head_6[] = { 0x05, 0x04 }; 176 static unsigned char adc_head_9[] = { 0x05, 0x02 }; 177 static unsigned char adc_head_12[] = { 0x05, 0x01 }; 178 static unsigned char pll_bw_nom[] = { 0x0d, 0x47 }; 179 static unsigned char pll_bw_low[] = { 0x0d, 0x27 }; 180 static unsigned char gainset_2[] = { 0x28, 0x64 }; 181 static unsigned char agc_rst_on[] = { 0x0e, 0x0b }; 182 static unsigned char agc_rst_off[] = { 0x0e, 0x09 }; 183 static unsigned char if_agc_set[] = { 0x0f, 0x81 }; 184 static unsigned char addr_adc_sat = 0x1a; 185 static unsigned char addr_agc_stat = 0x1d; 186 static unsigned char addr_pll_stat = 0x1b; 187 static unsigned char adc_sat = 0, agc_stat = 0, 188 pll_stat; 189 int i; 190 191 set_audio(fe, params); 192 193 if (priv->cfg.config) 194 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config); 195 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2); 196 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2); 197 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2); 198 msleep(1); 199 200 if (params->mode == V4L2_TUNER_RADIO) { 201 unsigned char deemphasis[] = { 0x13, 1 }; 202 203 /* FIXME: allow using a different deemphasis */ 204 205 if (deemphasis_50) 206 deemphasis[1] = 2; 207 208 for (i = 0; i < ARRAY_SIZE(fm_mode); i++) 209 tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2); 210 211 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2); 212 } else { 213 expert_mode[1] = priv->tda8290_easy_mode + 0x80; 214 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2); 215 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2); 216 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2); 217 if (priv->tda8290_easy_mode & 0x60) 218 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2); 219 else 220 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2); 221 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2); 222 } 223 224 225 if (fe->ops.analog_ops.i2c_gate_ctrl) 226 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 227 228 if (fe->ops.tuner_ops.set_analog_params) 229 fe->ops.tuner_ops.set_analog_params(fe, params); 230 231 for (i = 0; i < 3; i++) { 232 tuner_i2c_xfer_send_recv(&priv->i2c_props, 233 &addr_pll_stat, 1, &pll_stat, 1); 234 if (pll_stat & 0x80) { 235 tuner_i2c_xfer_send_recv(&priv->i2c_props, 236 &addr_adc_sat, 1, 237 &adc_sat, 1); 238 tuner_i2c_xfer_send_recv(&priv->i2c_props, 239 &addr_agc_stat, 1, 240 &agc_stat, 1); 241 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); 242 break; 243 } else { 244 tuner_dbg("tda8290 not locked, no signal?\n"); 245 msleep(100); 246 } 247 } 248 /* adjust headroom resp. gain */ 249 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) { 250 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n", 251 agc_stat, adc_sat, pll_stat & 0x80); 252 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2); 253 msleep(100); 254 tuner_i2c_xfer_send_recv(&priv->i2c_props, 255 &addr_agc_stat, 1, &agc_stat, 1); 256 tuner_i2c_xfer_send_recv(&priv->i2c_props, 257 &addr_pll_stat, 1, &pll_stat, 1); 258 if ((agc_stat > 115) || !(pll_stat & 0x80)) { 259 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n", 260 agc_stat, pll_stat & 0x80); 261 if (priv->cfg.agcf) 262 priv->cfg.agcf(fe); 263 msleep(100); 264 tuner_i2c_xfer_send_recv(&priv->i2c_props, 265 &addr_agc_stat, 1, 266 &agc_stat, 1); 267 tuner_i2c_xfer_send_recv(&priv->i2c_props, 268 &addr_pll_stat, 1, 269 &pll_stat, 1); 270 if((agc_stat > 115) || !(pll_stat & 0x80)) { 271 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat); 272 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2); 273 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2); 274 msleep(100); 275 } 276 } 277 } 278 279 /* l/ l' deadlock? */ 280 if(priv->tda8290_easy_mode & 0x60) { 281 tuner_i2c_xfer_send_recv(&priv->i2c_props, 282 &addr_adc_sat, 1, 283 &adc_sat, 1); 284 tuner_i2c_xfer_send_recv(&priv->i2c_props, 285 &addr_pll_stat, 1, 286 &pll_stat, 1); 287 if ((adc_sat > 20) || !(pll_stat & 0x80)) { 288 tuner_dbg("trying to resolve SECAM L deadlock\n"); 289 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2); 290 msleep(40); 291 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2); 292 } 293 } 294 295 if (fe->ops.analog_ops.i2c_gate_ctrl) 296 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 297 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2); 298} 299 300/*---------------------------------------------------------------------*/ 301 302static void tda8295_power(struct dvb_frontend *fe, int enable) 303{ 304 struct tda8290_priv *priv = fe->analog_demod_priv; 305 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */ 306 307 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 308 309 if (enable) 310 buf[1] = 0x01; 311 else 312 buf[1] = 0x03; 313 314 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 315} 316 317static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable) 318{ 319 struct tda8290_priv *priv = fe->analog_demod_priv; 320 unsigned char buf[] = { 0x01, 0x00 }; 321 322 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 323 324 if (enable) 325 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */ 326 else 327 buf[1] = 0x00; /* reset active bit */ 328 329 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 330} 331 332static void tda8295_set_video_std(struct dvb_frontend *fe) 333{ 334 struct tda8290_priv *priv = fe->analog_demod_priv; 335 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode }; 336 337 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 338 339 tda8295_set_easy_mode(fe, 1); 340 msleep(20); 341 tda8295_set_easy_mode(fe, 0); 342} 343 344/*---------------------------------------------------------------------*/ 345 346static void tda8295_agc1_out(struct dvb_frontend *fe, int enable) 347{ 348 struct tda8290_priv *priv = fe->analog_demod_priv; 349 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */ 350 351 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); 352 353 if (enable) 354 buf[1] &= ~0x40; 355 else 356 buf[1] |= 0x40; 357 358 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); 359} 360 361static void tda8295_agc2_out(struct dvb_frontend *fe, int enable) 362{ 363 struct tda8290_priv *priv = fe->analog_demod_priv; 364 unsigned char set_gpio_cf[] = { 0x44, 0x00 }; 365 unsigned char set_gpio_val[] = { 0x46, 0x00 }; 366 367 tuner_i2c_xfer_send_recv(&priv->i2c_props, 368 &set_gpio_cf[0], 1, &set_gpio_cf[1], 1); 369 tuner_i2c_xfer_send_recv(&priv->i2c_props, 370 &set_gpio_val[0], 1, &set_gpio_val[1], 1); 371 372 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */ 373 374 if (enable) { 375 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */ 376 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */ 377 } 378 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2); 379 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2); 380} 381 382static int tda8295_has_signal(struct dvb_frontend *fe, u16 *signal) 383{ 384 struct tda8290_priv *priv = fe->analog_demod_priv; 385 386 unsigned char hvpll_stat = 0x26; 387 unsigned char ret; 388 389 tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1); 390 *signal = (ret & 0x01) ? 65535 : 0; 391 return 0; 392} 393 394/*---------------------------------------------------------------------*/ 395 396static void tda8295_set_params(struct dvb_frontend *fe, 397 struct analog_parameters *params) 398{ 399 struct tda8290_priv *priv = fe->analog_demod_priv; 400 u16 signal = 0; 401 unsigned char blanking_mode[] = { 0x1d, 0x00 }; 402 403 set_audio(fe, params); 404 405 tuner_dbg("%s: freq = %d\n", __func__, params->frequency); 406 407 tda8295_power(fe, 1); 408 tda8295_agc1_out(fe, 1); 409 410 tuner_i2c_xfer_send_recv(&priv->i2c_props, 411 &blanking_mode[0], 1, &blanking_mode[1], 1); 412 413 tda8295_set_video_std(fe); 414 415 blanking_mode[1] = 0x03; 416 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); 417 msleep(20); 418 419 if (fe->ops.analog_ops.i2c_gate_ctrl) 420 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 421 422 if (fe->ops.tuner_ops.set_analog_params) 423 fe->ops.tuner_ops.set_analog_params(fe, params); 424 425 if (priv->cfg.agcf) 426 priv->cfg.agcf(fe); 427 428 tda8295_has_signal(fe, &signal); 429 if (signal) 430 tuner_dbg("tda8295 is locked\n"); 431 else 432 tuner_dbg("tda8295 not locked, no signal?\n"); 433 434 if (fe->ops.analog_ops.i2c_gate_ctrl) 435 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 436} 437 438/*---------------------------------------------------------------------*/ 439 440static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal) 441{ 442 struct tda8290_priv *priv = fe->analog_demod_priv; 443 444 unsigned char i2c_get_afc[1] = { 0x1B }; 445 unsigned char afc = 0; 446 447 tuner_i2c_xfer_send_recv(&priv->i2c_props, 448 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1); 449 *signal = (afc & 0x80) ? 65535 : 0; 450 return 0; 451} 452 453/*---------------------------------------------------------------------*/ 454 455static void tda8290_standby(struct dvb_frontend *fe) 456{ 457 struct tda8290_priv *priv = fe->analog_demod_priv; 458 459 static unsigned char cb1[] = { 0x30, 0xD0 }; 460 static unsigned char tda8290_standby[] = { 0x00, 0x02 }; 461 static unsigned char tda8290_agc_tri[] = { 0x02, 0x20 }; 462 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2}; 463 464 if (fe->ops.analog_ops.i2c_gate_ctrl) 465 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 466 if (priv->ver & TDA8275A) 467 cb1[1] = 0x90; 468 i2c_transfer(priv->i2c_props.adap, &msg, 1); 469 if (fe->ops.analog_ops.i2c_gate_ctrl) 470 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 471 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2); 472 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); 473} 474 475static void tda8295_standby(struct dvb_frontend *fe) 476{ 477 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */ 478 479 tda8295_power(fe, 0); 480} 481 482static void tda8290_init_if(struct dvb_frontend *fe) 483{ 484 struct tda8290_priv *priv = fe->analog_demod_priv; 485 486 static unsigned char set_VS[] = { 0x30, 0x6F }; 487 static unsigned char set_GP00_CF[] = { 0x20, 0x01 }; 488 static unsigned char set_GP01_CF[] = { 0x20, 0x0B }; 489 490 if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) || 491 (priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF)) 492 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2); 493 else 494 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2); 495 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2); 496} 497 498static void tda8295_init_if(struct dvb_frontend *fe) 499{ 500 struct tda8290_priv *priv = fe->analog_demod_priv; 501 502 static unsigned char set_adc_ctl[] = { 0x33, 0x14 }; 503 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 }; 504 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 }; 505 static unsigned char set_pll_reg0[] = { 0x38, 0x23 }; 506 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 }; 507 static unsigned char set_pll_reg10[] = { 0x42, 0x61 }; 508 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b }; 509 510 tda8295_power(fe, 1); 511 512 tda8295_set_easy_mode(fe, 0); 513 tda8295_set_video_std(fe); 514 515 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2); 516 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2); 517 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2); 518 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2); 519 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2); 520 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2); 521 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2); 522 523 tda8295_agc1_out(fe, 0); 524 tda8295_agc2_out(fe, 0); 525} 526 527static void tda8290_init_tuner(struct dvb_frontend *fe) 528{ 529 struct tda8290_priv *priv = fe->analog_demod_priv; 530 static unsigned char tda8275_init[] = 531 { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf, 532 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 }; 533 static unsigned char tda8275a_init[] = 534 { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b, 535 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b }; 536 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, 537 .buf=tda8275_init, .len = 14}; 538 if (priv->ver & TDA8275A) 539 msg.buf = tda8275a_init; 540 541 if (fe->ops.analog_ops.i2c_gate_ctrl) 542 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 543 i2c_transfer(priv->i2c_props.adap, &msg, 1); 544 if (fe->ops.analog_ops.i2c_gate_ctrl) 545 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 546} 547 548/*---------------------------------------------------------------------*/ 549 550static void tda829x_release(struct dvb_frontend *fe) 551{ 552 struct tda8290_priv *priv = fe->analog_demod_priv; 553 554 /* only try to release the tuner if we've 555 * attached it from within this module */ 556 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A)) 557 if (fe->ops.tuner_ops.release) 558 fe->ops.tuner_ops.release(fe); 559 560 kfree(fe->analog_demod_priv); 561 fe->analog_demod_priv = NULL; 562} 563 564static struct tda18271_config tda829x_tda18271_config = { 565 .gate = TDA18271_GATE_ANALOG, 566}; 567 568static int tda829x_find_tuner(struct dvb_frontend *fe) 569{ 570 struct tda8290_priv *priv = fe->analog_demod_priv; 571 int i, ret, tuners_found; 572 u32 tuner_addrs; 573 u8 data; 574 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 }; 575 576 if (fe->ops.analog_ops.i2c_gate_ctrl) 577 fe->ops.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 if (fe->ops.analog_ops.i2c_gate_ctrl) 596 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 597 598 if (tuners_found > 1) 599 for (i = 0; i < tuners_found; i++) { 600 msg.addr = tuner_addrs & 0xff; 601 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 602 if (ret == 1) 603 tuner_addrs = tuner_addrs >> 8; 604 else 605 break; 606 } 607 608 if (tuner_addrs == 0) { 609 tuner_addrs = 0x60; 610 tuner_info("could not clearly identify tuner address, defaulting to %x\n", 611 tuner_addrs); 612 } else { 613 tuner_addrs = tuner_addrs & 0xff; 614 tuner_info("setting tuner address to %x\n", tuner_addrs); 615 } 616 priv->tda827x_addr = tuner_addrs; 617 msg.addr = tuner_addrs; 618 619 if (fe->ops.analog_ops.i2c_gate_ctrl) 620 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); 621 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); 622 623 if (ret != 1) { 624 tuner_warn("tuner access failed!\n"); 625 if (fe->ops.analog_ops.i2c_gate_ctrl) 626 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 627 return -EREMOTEIO; 628 } 629 630 if ((data == 0x83) || (data == 0x84)) { 631 priv->ver |= TDA18271; 632 tda829x_tda18271_config.config = priv->cfg.config; 633 tda829x_tda18271_config.std_map = priv->tda18271_std_map; 634 dvb_attach(tda18271_attach, fe, priv->tda827x_addr, 635 priv->i2c_props.adap, &tda829x_tda18271_config); 636 } else { 637 if ((data & 0x3c) == 0) 638 priv->ver |= TDA8275; 639 else 640 priv->ver |= TDA8275A; 641 642 dvb_attach(tda827x_attach, fe, priv->tda827x_addr, 643 priv->i2c_props.adap, &priv->cfg); 644 priv->cfg.switch_addr = priv->i2c_props.addr; 645 } 646 if (fe->ops.tuner_ops.init) 647 fe->ops.tuner_ops.init(fe); 648 649 if (fe->ops.tuner_ops.sleep) 650 fe->ops.tuner_ops.sleep(fe); 651 652 if (fe->ops.analog_ops.i2c_gate_ctrl) 653 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); 654 655 return 0; 656} 657 658static int tda8290_probe(struct tuner_i2c_props *i2c_props) 659{ 660#define TDA8290_ID 0x89 661 u8 reg = 0x1f, id; 662 struct i2c_msg msg_read[] = { 663 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 664 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 665 }; 666 667 /* detect tda8290 */ 668 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 669 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 670 __func__, reg); 671 return -ENODEV; 672 } 673 674 if (id == TDA8290_ID) { 675 if (debug) 676 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n", 677 __func__, i2c_adapter_id(i2c_props->adap), 678 i2c_props->addr); 679 return 0; 680 } 681 return -ENODEV; 682} 683 684static int tda8295_probe(struct tuner_i2c_props *i2c_props) 685{ 686#define TDA8295_ID 0x8a 687#define TDA8295C2_ID 0x8b 688 u8 reg = 0x2f, id; 689 struct i2c_msg msg_read[] = { 690 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® }, 691 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id }, 692 }; 693 694 /* detect tda8295 */ 695 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) { 696 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n", 697 __func__, reg); 698 return -ENODEV; 699 } 700 701 if ((id & 0xfe) == TDA8295_ID) { 702 if (debug) 703 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n", 704 __func__, (id == TDA8295_ID) ? 705 "tda8295c1" : "tda8295c2", 706 i2c_adapter_id(i2c_props->adap), 707 i2c_props->addr); 708 return 0; 709 } 710 711 return -ENODEV; 712} 713 714static const struct analog_demod_ops tda8290_ops = { 715 .set_params = tda8290_set_params, 716 .has_signal = tda8290_has_signal, 717 .standby = tda8290_standby, 718 .release = tda829x_release, 719 .i2c_gate_ctrl = tda8290_i2c_bridge, 720}; 721 722static const struct analog_demod_ops tda8295_ops = { 723 .set_params = tda8295_set_params, 724 .has_signal = tda8295_has_signal, 725 .standby = tda8295_standby, 726 .release = tda829x_release, 727 .i2c_gate_ctrl = tda8295_i2c_bridge, 728}; 729 730struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe, 731 struct i2c_adapter *i2c_adap, u8 i2c_addr, 732 struct tda829x_config *cfg) 733{ 734 struct tda8290_priv *priv = NULL; 735 char *name; 736 737 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); 738 if (priv == NULL) 739 return NULL; 740 fe->analog_demod_priv = priv; 741 742 priv->i2c_props.addr = i2c_addr; 743 priv->i2c_props.adap = i2c_adap; 744 priv->i2c_props.name = "tda829x"; 745 if (cfg) { 746 priv->cfg.config = cfg->lna_cfg; 747 priv->tda18271_std_map = cfg->tda18271_std_map; 748 } 749 750 if (tda8290_probe(&priv->i2c_props) == 0) { 751 priv->ver = TDA8290; 752 memcpy(&fe->ops.analog_ops, &tda8290_ops, 753 sizeof(struct analog_demod_ops)); 754 } 755 756 if (tda8295_probe(&priv->i2c_props) == 0) { 757 priv->ver = TDA8295; 758 memcpy(&fe->ops.analog_ops, &tda8295_ops, 759 sizeof(struct analog_demod_ops)); 760 } 761 762 if (cfg && cfg->no_i2c_gate) 763 fe->ops.analog_ops.i2c_gate_ctrl = NULL; 764 765 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) { 766 tda8295_power(fe, 1); 767 if (tda829x_find_tuner(fe) < 0) 768 goto fail; 769 } 770 771 switch (priv->ver) { 772 case TDA8290: 773 name = "tda8290"; 774 break; 775 case TDA8295: 776 name = "tda8295"; 777 break; 778 case TDA8290 | TDA8275: 779 name = "tda8290+75"; 780 break; 781 case TDA8295 | TDA8275: 782 name = "tda8295+75"; 783 break; 784 case TDA8290 | TDA8275A: 785 name = "tda8290+75a"; 786 break; 787 case TDA8295 | TDA8275A: 788 name = "tda8295+75a"; 789 break; 790 case TDA8290 | TDA18271: 791 name = "tda8290+18271"; 792 break; 793 case TDA8295 | TDA18271: 794 name = "tda8295+18271"; 795 break; 796 default: 797 goto fail; 798 } 799 tuner_info("type set to %s\n", name); 800 801 fe->ops.analog_ops.info.name = name; 802 803 if (priv->ver & TDA8290) { 804 if (priv->ver & (TDA8275 | TDA8275A)) 805 tda8290_init_tuner(fe); 806 tda8290_init_if(fe); 807 } else if (priv->ver & TDA8295) 808 tda8295_init_if(fe); 809 810 return fe; 811 812fail: 813 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops)); 814 815 tda829x_release(fe); 816 return NULL; 817} 818EXPORT_SYMBOL_GPL(tda829x_attach); 819 820int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr) 821{ 822 struct tuner_i2c_props i2c_props = { 823 .adap = i2c_adap, 824 .addr = i2c_addr, 825 }; 826 827 static unsigned char soft_reset[] = { 0x00, 0x00 }; 828 static unsigned char easy_mode_b[] = { 0x01, 0x02 }; 829 static unsigned char easy_mode_g[] = { 0x01, 0x04 }; 830 static unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 }; 831 static unsigned char addr_dto_lsb = 0x07; 832 unsigned char data; 833#define PROBE_BUFFER_SIZE 8 834 unsigned char buf[PROBE_BUFFER_SIZE]; 835 int i; 836 837 /* rule out tda9887, which would return the same byte repeatedly */ 838 tuner_i2c_xfer_send_recv(&i2c_props, 839 soft_reset, 1, buf, PROBE_BUFFER_SIZE); 840 for (i = 1; i < PROBE_BUFFER_SIZE; i++) { 841 if (buf[i] != buf[0]) 842 break; 843 } 844 845 /* all bytes are equal, not a tda829x - probably a tda9887 */ 846 if (i == PROBE_BUFFER_SIZE) 847 return -ENODEV; 848 849 if ((tda8290_probe(&i2c_props) == 0) || 850 (tda8295_probe(&i2c_props) == 0)) 851 return 0; 852 853 /* fall back to old probing method */ 854 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2); 855 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 856 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1); 857 if (data == 0) { 858 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2); 859 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2); 860 tuner_i2c_xfer_send_recv(&i2c_props, 861 &addr_dto_lsb, 1, &data, 1); 862 if (data == 0x7b) { 863 return 0; 864 } 865 } 866 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3); 867 return -ENODEV; 868} 869EXPORT_SYMBOL_GPL(tda829x_probe); 870 871MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver"); 872MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky"); 873MODULE_LICENSE("GPL"); 874