drivers/media/common/tuners/tda8290.c

   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/delay.h>
  25 #include <linux/videodev2.h>
  26 #include "tuner-i2c.h"
  27 #include "tda8290.h"
  28 #include "tda827x.h"
  29 #include "tda18271.h"
  30
  31 static int debug;
  32 module_param(debug, int, 0644);
  33 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  34
  35 static int deemphasis_50;
  36 module_param(deemphasis_50, int, 0644);
  37 MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
  38
  39 /* ---------------------------------------------------------------------- */
  40
  41 struct tda8290_priv {
  42         struct tuner_i2c_props i2c_props;
  43
  44         unsigned char tda8290_easy_mode;
  45
  46         unsigned char tda827x_addr;
  47
  48         unsigned char ver;
  49 #define TDA8290   1
  50 #define TDA8295   2
  51 #define TDA8275   4
  52 #define TDA8275A  8
  53 #define TDA18271 16
  54
  55         struct tda827x_config cfg;
  56 };
  57
  58 /*---------------------------------------------------------------------*/
  59
  60 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
  61 {
  62         struct tda8290_priv *priv = fe->analog_demod_priv;
  63
  64         unsigned char  enable[2] = { 0x21, 0xC0 };
  65         unsigned char disable[2] = { 0x21, 0x00 };
  66         unsigned char *msg;
  67
  68         if (close) {
  69                 msg = enable;
  70                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  71                 /* let the bridge stabilize */
  72                 msleep(20);
  73         } else {
  74                 msg = disable;
  75                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  76         }
  77
  78         return 0;
  79 }
  80
  81 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
  82 {
  83         struct tda8290_priv *priv = fe->analog_demod_priv;
  84
  85         unsigned char  enable[2] = { 0x45, 0xc1 };
  86         unsigned char disable[2] = { 0x46, 0x00 };
  87         unsigned char buf[3] = { 0x45, 0x01, 0x00 };
  88         unsigned char *msg;
  89
  90         if (close) {
  91                 msg = enable;
  92                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  93                 /* let the bridge stabilize */
  94                 msleep(20);
  95         } else {
  96                 msg = disable;
  97                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
  98                 tuner_i2c_xfer_recv(&priv->i2c_props, &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         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
 304 static 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
 320 static 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
 336 static 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
 350 static 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
 366 static 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
 387 static 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
 401 static 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
 442 static 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
 456 static 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
 474 static 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
 481 static 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
 496 static 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
 525 static 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
 544 static 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
 558 static struct tda18271_config tda829x_tda18271_config = {
 559         .gate    = TDA18271_GATE_ANALOG,
 560 };
 561
 562 static 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
 653 static 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
 673 static 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
 696 static 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
 704 static 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
 712 struct 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
 787 fail:
 788         tda829x_release(fe);
 789         return NULL;
 790 }
 791 EXPORT_SYMBOL_GPL(tda829x_attach);
 792
 793 int 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 }
 843 EXPORT_SYMBOL_GPL(tda829x_probe);
 844
 845 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 846 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 847 MODULE_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  */