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/slab.h>
  25 #include <linux/delay.h>
  26 #include <linux/videodev2.h>
  27 #include "tuner-i2c.h"
  28 #include "tda8290.h"
  29 #include "tda827x.h"
  30 #include "tda18271.h"
  31
  32 static int debug;
  33 module_param(debug, int, 0644);
  34 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  35
  36 static int deemphasis_50;
  37 module_param(deemphasis_50, int, 0644);
  38 MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
  39
  40 /* ---------------------------------------------------------------------- */
  41
  42 struct tda8290_priv {
  43         struct tuner_i2c_props i2c_props;
  44
  45         unsigned char tda8290_easy_mode;
  46
  47         unsigned char tda827x_addr;
  48
  49         unsigned char ver;
  50 #define TDA8290   1
  51 #define TDA8295   2
  52 #define TDA8275   4
  53 #define TDA8275A  8
  54 #define TDA18271 16
  55
  56         struct tda827x_config cfg;
  57 };
  58
  59 /*---------------------------------------------------------------------*/
  60
  61 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
  62 {
  63         struct tda8290_priv *priv = fe->analog_demod_priv;
  64
  65         unsigned char  enable[2] = { 0x21, 0xC0 };
  66         unsigned char disable[2] = { 0x21, 0x00 };
  67         unsigned char *msg;
  68
  69         if (close) {
  70                 msg = enable;
  71                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  72                 /* let the bridge stabilize */
  73                 msleep(20);
  74         } else {
  75                 msg = disable;
  76                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  77         }
  78
  79         return 0;
  80 }
  81
  82 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
  83 {
  84         struct tda8290_priv *priv = fe->analog_demod_priv;
  85
  86         unsigned char  enable[2] = { 0x45, 0xc1 };
  87         unsigned char disable[2] = { 0x46, 0x00 };
  88         unsigned char buf[3] = { 0x45, 0x01, 0x00 };
  89         unsigned char *msg;
  90
  91         if (close) {
  92                 msg = enable;
  93                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  94                 /* let the bridge stabilize */
  95                 msleep(20);
  96         } else {
  97                 msg = disable;
  98                 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1);
  99
 100                 buf[2] = msg[1];
 101                 buf[2] &= ~0x04;
 102                 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
 103                 msleep(5);
 104
 105                 msg[1] |= 0x04;
 106                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
 107         }
 108
 109         return 0;
 110 }
 111
 112 /*---------------------------------------------------------------------*/
 113
 114 static void set_audio(struct dvb_frontend *fe,
 115                       struct analog_parameters *params)
 116 {
 117         struct tda8290_priv *priv = fe->analog_demod_priv;
 118         char* mode;
 119
 120         if (params->std & V4L2_STD_MN) {
 121                 priv->tda8290_easy_mode = 0x01;
 122                 mode = "MN";
 123         } else if (params->std & V4L2_STD_B) {
 124                 priv->tda8290_easy_mode = 0x02;
 125                 mode = "B";
 126         } else if (params->std & V4L2_STD_GH) {
 127                 priv->tda8290_easy_mode = 0x04;
 128                 mode = "GH";
 129         } else if (params->std & V4L2_STD_PAL_I) {
 130                 priv->tda8290_easy_mode = 0x08;
 131                 mode = "I";
 132         } else if (params->std & V4L2_STD_DK) {
 133                 priv->tda8290_easy_mode = 0x10;
 134                 mode = "DK";
 135         } else if (params->std & V4L2_STD_SECAM_L) {
 136                 priv->tda8290_easy_mode = 0x20;
 137                 mode = "L";
 138         } else if (params->std & V4L2_STD_SECAM_LC) {
 139                 priv->tda8290_easy_mode = 0x40;
 140                 mode = "LC";
 141         } else {
 142                 priv->tda8290_easy_mode = 0x10;
 143                 mode = "xx";
 144         }
 145
 146         if (params->mode == V4L2_TUNER_RADIO) {
 147                 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */
 148                 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01;
 149                 tuner_dbg("setting to radio FM\n");
 150         } else {
 151                 tuner_dbg("setting tda829x to system %s\n", mode);
 152         }
 153 }
 154
 155 static struct {
 156         unsigned char seq[2];
 157 } fm_mode[] = {
 158         { { 0x01, 0x81} },      /* Put device into expert mode */
 159         { { 0x03, 0x48} },      /* Disable NOTCH and VIDEO filters */
 160         { { 0x04, 0x04} },      /* Disable color carrier filter (SSIF) */
 161         { { 0x05, 0x04} },      /* ADC headroom */
 162         { { 0x06, 0x10} },      /* group delay flat */
 163
 164         { { 0x07, 0x00} },      /* use the same radio DTO values as a tda8295 */
 165         { { 0x08, 0x00} },
 166         { { 0x09, 0x80} },
 167         { { 0x0a, 0xda} },
 168         { { 0x0b, 0x4b} },
 169         { { 0x0c, 0x68} },
 170
 171         { { 0x0d, 0x00} },      /* PLL off, no video carrier detect */
 172         { { 0x14, 0x00} },      /* disable auto mute if no video */
 173 };
 174
 175 static void tda8290_set_params(struct dvb_frontend *fe,
 176                                struct analog_parameters *params)
 177 {
 178         struct tda8290_priv *priv = fe->analog_demod_priv;
 179
 180         unsigned char soft_reset[]  = { 0x00, 0x00 };
 181         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
 182         unsigned char expert_mode[] = { 0x01, 0x80 };
 183         unsigned char agc_out_on[]  = { 0x02, 0x00 };
 184         unsigned char gainset_off[] = { 0x28, 0x14 };
 185         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
 186         unsigned char adc_head_6[]  = { 0x05, 0x04 };
 187         unsigned char adc_head_9[]  = { 0x05, 0x02 };
 188         unsigned char adc_head_12[] = { 0x05, 0x01 };
 189         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
 190         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
 191         unsigned char gainset_2[]   = { 0x28, 0x64 };
 192         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
 193         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
 194         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
 195         unsigned char addr_adc_sat  = 0x1a;
 196         unsigned char addr_agc_stat = 0x1d;
 197         unsigned char addr_pll_stat = 0x1b;
 198         unsigned char adc_sat, agc_stat,
 199                       pll_stat;
 200         int i;
 201
 202         set_audio(fe, params);
 203
 204         if (priv->cfg.config)
 205                 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
 206         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
 207         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
 208         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
 209         msleep(1);
 210
 211         if (params->mode == V4L2_TUNER_RADIO) {
 212                 unsigned char deemphasis[]  = { 0x13, 1 };
 213
 214                 /* FIXME: allow using a different deemphasis */
 215
 216                 if (deemphasis_50)
 217                         deemphasis[1] = 2;
 218
 219                 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
 220                         tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
 221
 222                 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
 223         } else {
 224                 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
 225                 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
 226                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
 227                 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
 228                 if (priv->tda8290_easy_mode & 0x60)
 229                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
 230                 else
 231                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
 232                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
 233         }
 234
 235
 236         tda8290_i2c_bridge(fe, 1);
 237
 238         if (fe->ops.tuner_ops.set_analog_params)
 239                 fe->ops.tuner_ops.set_analog_params(fe, params);
 240
 241         for (i = 0; i < 3; i++) {
 242                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 243                                          &addr_pll_stat, 1, &pll_stat, 1);
 244                 if (pll_stat & 0x80) {
 245                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 246                                                  &addr_adc_sat, 1,
 247                                                  &adc_sat, 1);
 248                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 249                                                  &addr_agc_stat, 1,
 250                                                  &agc_stat, 1);
 251                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
 252                         break;
 253                 } else {
 254                         tuner_dbg("tda8290 not locked, no signal?\n");
 255                         msleep(100);
 256                 }
 257         }
 258         /* adjust headroom resp. gain */
 259         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
 260                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
 261                            agc_stat, adc_sat, pll_stat & 0x80);
 262                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
 263                 msleep(100);
 264                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 265                                          &addr_agc_stat, 1, &agc_stat, 1);
 266                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 267                                          &addr_pll_stat, 1, &pll_stat, 1);
 268                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
 269                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
 270                                    agc_stat, pll_stat & 0x80);
 271                         if (priv->cfg.agcf)
 272                                 priv->cfg.agcf(fe);
 273                         msleep(100);
 274                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 275                                                  &addr_agc_stat, 1,
 276                                                  &agc_stat, 1);
 277                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 278                                                  &addr_pll_stat, 1,
 279                                                  &pll_stat, 1);
 280                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
 281                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
 282                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
 283                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
 284                                 msleep(100);
 285                         }
 286                 }
 287         }
 288
 289         /* l/ l' deadlock? */
 290         if(priv->tda8290_easy_mode & 0x60) {
 291                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 292                                          &addr_adc_sat, 1,
 293                                          &adc_sat, 1);
 294                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 295                                          &addr_pll_stat, 1,
 296                                          &pll_stat, 1);
 297                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
 298                         tuner_dbg("trying to resolve SECAM L deadlock\n");
 299                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
 300                         msleep(40);
 301                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
 302                 }
 303         }
 304
 305         tda8290_i2c_bridge(fe, 0);
 306         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
 307 }
 308
 309 /*---------------------------------------------------------------------*/
 310
 311 static void tda8295_power(struct dvb_frontend *fe, int enable)
 312 {
 313         struct tda8290_priv *priv = fe->analog_demod_priv;
 314         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
 315
 316         tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
 317
 318         if (enable)
 319                 buf[1] = 0x01;
 320         else
 321                 buf[1] = 0x03;
 322
 323         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 324 }
 325
 326 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
 327 {
 328         struct tda8290_priv *priv = fe->analog_demod_priv;
 329         unsigned char buf[] = { 0x01, 0x00 };
 330
 331         tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
 332
 333         if (enable)
 334                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
 335         else
 336                 buf[1] = 0x00; /* reset active bit */
 337
 338         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 339 }
 340
 341 static void tda8295_set_video_std(struct dvb_frontend *fe)
 342 {
 343         struct tda8290_priv *priv = fe->analog_demod_priv;
 344         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
 345
 346         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 347
 348         tda8295_set_easy_mode(fe, 1);
 349         msleep(20);
 350         tda8295_set_easy_mode(fe, 0);
 351 }
 352
 353 /*---------------------------------------------------------------------*/
 354
 355 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
 356 {
 357         struct tda8290_priv *priv = fe->analog_demod_priv;
 358         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
 359
 360         tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
 361
 362         if (enable)
 363                 buf[1] &= ~0x40;
 364         else
 365                 buf[1] |= 0x40;
 366
 367         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 368 }
 369
 370 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
 371 {
 372         struct tda8290_priv *priv = fe->analog_demod_priv;
 373         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
 374         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
 375
 376         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 377                                  &set_gpio_cf[0], 1, &set_gpio_cf[1], 1);
 378         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 379                                  &set_gpio_val[0], 1, &set_gpio_val[1], 1);
 380
 381         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
 382
 383         if (enable) {
 384                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
 385                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
 386         }
 387         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
 388         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
 389 }
 390
 391 static int tda8295_has_signal(struct dvb_frontend *fe)
 392 {
 393         struct tda8290_priv *priv = fe->analog_demod_priv;
 394
 395         unsigned char hvpll_stat = 0x26;
 396         unsigned char ret;
 397
 398         tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);
 399         return (ret & 0x01) ? 65535 : 0;
 400 }
 401
 402 /*---------------------------------------------------------------------*/
 403
 404 static void tda8295_set_params(struct dvb_frontend *fe,
 405                                struct analog_parameters *params)
 406 {
 407         struct tda8290_priv *priv = fe->analog_demod_priv;
 408
 409         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
 410
 411         set_audio(fe, params);
 412
 413         tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
 414
 415         tda8295_power(fe, 1);
 416         tda8295_agc1_out(fe, 1);
 417
 418         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 419                                  &blanking_mode[0], 1, &blanking_mode[1], 1);
 420
 421         tda8295_set_video_std(fe);
 422
 423         blanking_mode[1] = 0x03;
 424         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
 425         msleep(20);
 426
 427         tda8295_i2c_bridge(fe, 1);
 428
 429         if (fe->ops.tuner_ops.set_analog_params)
 430                 fe->ops.tuner_ops.set_analog_params(fe, params);
 431
 432         if (priv->cfg.agcf)
 433                 priv->cfg.agcf(fe);
 434
 435         if (tda8295_has_signal(fe))
 436                 tuner_dbg("tda8295 is locked\n");
 437         else
 438                 tuner_dbg("tda8295 not locked, no signal?\n");
 439
 440         tda8295_i2c_bridge(fe, 0);
 441 }
 442
 443 /*---------------------------------------------------------------------*/
 444
 445 static int tda8290_has_signal(struct dvb_frontend *fe)
 446 {
 447         struct tda8290_priv *priv = fe->analog_demod_priv;
 448
 449         unsigned char i2c_get_afc[1] = { 0x1B };
 450         unsigned char afc = 0;
 451
 452         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 453                                  i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1);
 454         return (afc & 0x80)? 65535:0;
 455 }
 456
 457 /*---------------------------------------------------------------------*/
 458
 459 static void tda8290_standby(struct dvb_frontend *fe)
 460 {
 461         struct tda8290_priv *priv = fe->analog_demod_priv;
 462
 463         unsigned char cb1[] = { 0x30, 0xD0 };
 464         unsigned char tda8290_standby[] = { 0x00, 0x02 };
 465         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
 466         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
 467
 468         tda8290_i2c_bridge(fe, 1);
 469         if (priv->ver & TDA8275A)
 470                 cb1[1] = 0x90;
 471         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 472         tda8290_i2c_bridge(fe, 0);
 473         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
 474         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
 475 }
 476
 477 static void tda8295_standby(struct dvb_frontend *fe)
 478 {
 479         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
 480
 481         tda8295_power(fe, 0);
 482 }
 483
 484 static void tda8290_init_if(struct dvb_frontend *fe)
 485 {
 486         struct tda8290_priv *priv = fe->analog_demod_priv;
 487
 488         unsigned char set_VS[] = { 0x30, 0x6F };
 489         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
 490         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
 491
 492         if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
 493                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
 494         else
 495                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
 496         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
 497 }
 498
 499 static void tda8295_init_if(struct dvb_frontend *fe)
 500 {
 501         struct tda8290_priv *priv = fe->analog_demod_priv;
 502
 503         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
 504         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
 505         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
 506         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
 507         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
 508         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
 509         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
 510
 511         tda8295_power(fe, 1);
 512
 513         tda8295_set_easy_mode(fe, 0);
 514         tda8295_set_video_std(fe);
 515
 516         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
 517         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
 518         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
 519         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
 520         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
 521         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
 522         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
 523
 524         tda8295_agc1_out(fe, 0);
 525         tda8295_agc2_out(fe, 0);
 526 }
 527
 528 static void tda8290_init_tuner(struct dvb_frontend *fe)
 529 {
 530         struct tda8290_priv *priv = fe->analog_demod_priv;
 531         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
 532                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
 533         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
 534                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
 535         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
 536                               .buf=tda8275_init, .len = 14};
 537         if (priv->ver & TDA8275A)
 538                 msg.buf = tda8275a_init;
 539
 540         tda8290_i2c_bridge(fe, 1);
 541         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 542         tda8290_i2c_bridge(fe, 0);
 543 }
 544
 545 /*---------------------------------------------------------------------*/
 546
 547 static void tda829x_release(struct dvb_frontend *fe)
 548 {
 549         struct tda8290_priv *priv = fe->analog_demod_priv;
 550
 551         /* only try to release the tuner if we've
 552          * attached it from within this module */
 553         if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
 554                 if (fe->ops.tuner_ops.release)
 555                         fe->ops.tuner_ops.release(fe);
 556
 557         kfree(fe->analog_demod_priv);
 558         fe->analog_demod_priv = NULL;
 559 }
 560
 561 static struct tda18271_config tda829x_tda18271_config = {
 562         .gate    = TDA18271_GATE_ANALOG,
 563 };
 564
 565 static int tda829x_find_tuner(struct dvb_frontend *fe)
 566 {
 567         struct tda8290_priv *priv = fe->analog_demod_priv;
 568         struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
 569         int i, ret, tuners_found;
 570         u32 tuner_addrs;
 571         u8 data;
 572         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
 573
 574         if (!analog_ops->i2c_gate_ctrl) {
 575                 printk(KERN_ERR "tda8290: no gate control were provided!\n");
 576
 577                 return -EINVAL;
 578         }
 579
 580         analog_ops->i2c_gate_ctrl(fe, 1);
 581
 582         /* probe for tuner chip */
 583         tuners_found = 0;
 584         tuner_addrs = 0;
 585         for (i = 0x60; i <= 0x63; i++) {
 586                 msg.addr = i;
 587                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 588                 if (ret == 1) {
 589                         tuners_found++;
 590                         tuner_addrs = (tuner_addrs << 8) + i;
 591                 }
 592         }
 593         /* if there is more than one tuner, we expect the right one is
 594            behind the bridge and we choose the highest address that doesn't
 595            give a response now
 596          */
 597
 598         analog_ops->i2c_gate_ctrl(fe, 0);
 599
 600         if (tuners_found > 1)
 601                 for (i = 0; i < tuners_found; i++) {
 602                         msg.addr = tuner_addrs  & 0xff;
 603                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 604                         if (ret == 1)
 605                                 tuner_addrs = tuner_addrs >> 8;
 606                         else
 607                                 break;
 608                 }
 609
 610         if (tuner_addrs == 0) {
 611                 tuner_addrs = 0x60;
 612                 tuner_info("could not clearly identify tuner address, "
 613                            "defaulting to %x\n", tuner_addrs);
 614         } else {
 615                 tuner_addrs = tuner_addrs & 0xff;
 616                 tuner_info("setting tuner address to %x\n", tuner_addrs);
 617         }
 618         priv->tda827x_addr = tuner_addrs;
 619         msg.addr = tuner_addrs;
 620
 621         analog_ops->i2c_gate_ctrl(fe, 1);
 622         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 623
 624         if (ret != 1) {
 625                 tuner_warn("tuner access failed!\n");
 626                 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                 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
 634                            priv->i2c_props.adap, &tda829x_tda18271_config);
 635         } else {
 636                 if ((data & 0x3c) == 0)
 637                         priv->ver |= TDA8275;
 638                 else
 639                         priv->ver |= TDA8275A;
 640
 641                 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
 642                            priv->i2c_props.adap, &priv->cfg);
 643                 priv->cfg.switch_addr = priv->i2c_props.addr;
 644         }
 645         if (fe->ops.tuner_ops.init)
 646                 fe->ops.tuner_ops.init(fe);
 647
 648         if (fe->ops.tuner_ops.sleep)
 649                 fe->ops.tuner_ops.sleep(fe);
 650
 651         analog_ops->i2c_gate_ctrl(fe, 0);
 652
 653         return 0;
 654 }
 655
 656 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
 657 {
 658 #define TDA8290_ID 0x89
 659         u8 reg = 0x1f, id;
 660         struct i2c_msg msg_read[] = {
 661                 { .addr = 0x4b, .flags = 0, .len = 1, .buf = &reg },
 662                 { .addr = 0x4b, .flags = I2C_M_RD, .len = 1, .buf = &id },
 663         };
 664
 665         /* detect tda8290 */
 666         if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
 667                 printk(KERN_WARNING "%s: tda8290 couldn't read register 0x%02x\n",
 668                                __func__, reg);
 669                 return -ENODEV;
 670         }
 671
 672         if (id == TDA8290_ID) {
 673                 if (debug)
 674                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
 675                                __func__, i2c_adapter_id(i2c_props->adap),
 676                                i2c_props->addr);
 677                 return 0;
 678         }
 679         return -ENODEV;
 680 }
 681
 682 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
 683 {
 684 #define TDA8295_ID 0x8a
 685 #define TDA8295C2_ID 0x8b
 686         u8 reg = 0x2f, id;
 687         struct i2c_msg msg_read[] = {
 688                 { .addr = 0x4b, .flags = 0, .len = 1, .buf = &reg },
 689                 { .addr = 0x4b, .flags = I2C_M_RD, .len = 1, .buf = &id },
 690         };
 691
 692         /* detect tda8290 */
 693         if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
 694                 printk(KERN_WARNING "%s: tda8290 couldn't read register 0x%02x\n",
 695                                __func__, reg);
 696                 return -ENODEV;
 697         }
 698
 699         if ((id & 0xfe) == TDA8295_ID) {
 700                 if (debug)
 701                         printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n",
 702                                __func__, (id == TDA8295_ID) ?
 703                                "tda8295c1" : "tda8295c2",
 704                                i2c_adapter_id(i2c_props->adap),
 705                                i2c_props->addr);
 706                 return 0;
 707         }
 708
 709         return -ENODEV;
 710 }
 711
 712 static struct analog_demod_ops tda8290_ops = {
 713         .set_params     = tda8290_set_params,
 714         .has_signal     = tda8290_has_signal,
 715         .standby        = tda8290_standby,
 716         .release        = tda829x_release,
 717         .i2c_gate_ctrl  = tda8290_i2c_bridge,
 718 };
 719
 720 static struct analog_demod_ops tda8295_ops = {
 721         .set_params     = tda8295_set_params,
 722         .has_signal     = tda8295_has_signal,
 723         .standby        = tda8295_standby,
 724         .release        = tda829x_release,
 725         .i2c_gate_ctrl  = tda8295_i2c_bridge,
 726 };
 727
 728 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
 729                                     struct i2c_adapter *i2c_adap, u8 i2c_addr,
 730                                     struct tda829x_config *cfg)
 731 {
 732         struct tda8290_priv *priv = NULL;
 733         char *name;
 734
 735         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
 736         if (priv == NULL)
 737                 return NULL;
 738         fe->analog_demod_priv = priv;
 739
 740         priv->i2c_props.addr     = i2c_addr;
 741         priv->i2c_props.adap     = i2c_adap;
 742         priv->i2c_props.name     = "tda829x";
 743         if (cfg)
 744                 priv->cfg.config         = cfg->lna_cfg;
 745
 746         if (tda8290_probe(&priv->i2c_props) == 0) {
 747                 priv->ver = TDA8290;
 748                 memcpy(&fe->ops.analog_ops, &tda8290_ops,
 749                        sizeof(struct analog_demod_ops));
 750         }
 751
 752         if (tda8295_probe(&priv->i2c_props) == 0) {
 753                 priv->ver = TDA8295;
 754                 memcpy(&fe->ops.analog_ops, &tda8295_ops,
 755                        sizeof(struct analog_demod_ops));
 756         }
 757
 758         if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) {
 759                 tda8295_power(fe, 1);
 760                 if (tda829x_find_tuner(fe) < 0)
 761                         goto fail;
 762         }
 763
 764         switch (priv->ver) {
 765         case TDA8290:
 766                 name = "tda8290";
 767                 break;
 768         case TDA8295:
 769                 name = "tda8295";
 770                 break;
 771         case TDA8290 | TDA8275:
 772                 name = "tda8290+75";
 773                 break;
 774         case TDA8295 | TDA8275:
 775                 name = "tda8295+75";
 776                 break;
 777         case TDA8290 | TDA8275A:
 778                 name = "tda8290+75a";
 779                 break;
 780         case TDA8295 | TDA8275A:
 781                 name = "tda8295+75a";
 782                 break;
 783         case TDA8290 | TDA18271:
 784                 name = "tda8290+18271";
 785                 break;
 786         case TDA8295 | TDA18271:
 787                 name = "tda8295+18271";
 788                 break;
 789         default:
 790                 goto fail;
 791         }
 792         tuner_info("type set to %s\n", name);
 793
 794         fe->ops.analog_ops.info.name = name;
 795
 796         if (priv->ver & TDA8290) {
 797                 if (priv->ver & (TDA8275 | TDA8275A))
 798                         tda8290_init_tuner(fe);
 799                 tda8290_init_if(fe);
 800         } else if (priv->ver & TDA8295)
 801                 tda8295_init_if(fe);
 802
 803         return fe;
 804
 805 fail:
 806         memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops));
 807
 808         tda829x_release(fe);
 809         return NULL;
 810 }
 811 EXPORT_SYMBOL_GPL(tda829x_attach);
 812
 813 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
 814 {
 815         struct tuner_i2c_props i2c_props = {
 816                 .adap = i2c_adap,
 817                 .addr = i2c_addr,
 818         };
 819
 820         unsigned char soft_reset[]   = { 0x00, 0x00 };
 821         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
 822         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
 823         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
 824         unsigned char addr_dto_lsb = 0x07;
 825         unsigned char data;
 826 #define PROBE_BUFFER_SIZE 8
 827         unsigned char buf[PROBE_BUFFER_SIZE];
 828         int i;
 829
 830         /* rule out tda9887, which would return the same byte repeatedly */
 831         tuner_i2c_xfer_send_recv(&i2c_props,
 832                                  soft_reset, 1, buf, PROBE_BUFFER_SIZE);
 833         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
 834                 if (buf[i] != buf[0])
 835                         break;
 836         }
 837
 838         /* all bytes are equal, not a tda829x - probably a tda9887 */
 839         if (i == PROBE_BUFFER_SIZE)
 840                 return -ENODEV;
 841
 842         if ((tda8290_probe(&i2c_props) == 0) ||
 843             (tda8295_probe(&i2c_props) == 0))
 844                 return 0;
 845
 846         /* fall back to old probing method */
 847         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
 848         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 849         tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1);
 850         if (data == 0) {
 851                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
 852                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 853                 tuner_i2c_xfer_send_recv(&i2c_props,
 854                                          &addr_dto_lsb, 1, &data, 1);
 855                 if (data == 0x7b) {
 856                         return 0;
 857                 }
 858         }
 859         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
 860         return -ENODEV;
 861 }
 862 EXPORT_SYMBOL_GPL(tda829x_probe);
 863
 864 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 865 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 866 MODULE_LICENSE("GPL");
 867
 868 /*
 869  * Overrides for Emacs so that we follow Linus's tabbing style.
 870  * ---------------------------------------------------------------------------
 871  * Local variables:
 872  * c-basic-offset: 8
 873  * End:
 874  */