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                 priv->tda8290_easy_mode = 0x01;         /* Start with MN values */
 148                 tuner_dbg("setting to radio FM\n");
 149         } else {
 150                 tuner_dbg("setting tda829x to system %s\n", mode);
 151         }
 152 }
 153
 154 static struct {
 155         unsigned char seq[2];
 156 } fm_mode[] = {
 157         { { 0x01, 0x81} },      /* Put device into expert mode */
 158         { { 0x03, 0x48} },      /* Disable NOTCH and VIDEO filters */
 159         { { 0x04, 0x04} },      /* Disable color carrier filter (SSIF) */
 160         { { 0x05, 0x04} },      /* ADC headroom */
 161         { { 0x06, 0x10} },      /* group delay flat */
 162
 163         { { 0x07, 0x00} },      /* use the same radio DTO values as a tda8295 */
 164         { { 0x08, 0x00} },
 165         { { 0x09, 0x80} },
 166         { { 0x0a, 0xda} },
 167         { { 0x0b, 0x4b} },
 168         { { 0x0c, 0x68} },
 169
 170         { { 0x0d, 0x00} },      /* PLL off, no video carrier detect */
 171         { { 0x14, 0x00} },      /* disable auto mute if no video */
 172 };
 173
 174 static void tda8290_set_params(struct dvb_frontend *fe,
 175                                struct analog_parameters *params)
 176 {
 177         struct tda8290_priv *priv = fe->analog_demod_priv;
 178
 179         unsigned char soft_reset[]  = { 0x00, 0x00 };
 180         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
 181         unsigned char expert_mode[] = { 0x01, 0x80 };
 182         unsigned char agc_out_on[]  = { 0x02, 0x00 };
 183         unsigned char gainset_off[] = { 0x28, 0x14 };
 184         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
 185         unsigned char adc_head_6[]  = { 0x05, 0x04 };
 186         unsigned char adc_head_9[]  = { 0x05, 0x02 };
 187         unsigned char adc_head_12[] = { 0x05, 0x01 };
 188         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
 189         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
 190         unsigned char gainset_2[]   = { 0x28, 0x64 };
 191         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
 192         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
 193         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
 194         unsigned char addr_adc_sat  = 0x1a;
 195         unsigned char addr_agc_stat = 0x1d;
 196         unsigned char addr_pll_stat = 0x1b;
 197         unsigned char adc_sat, agc_stat,
 198                       pll_stat;
 199         int i;
 200
 201         set_audio(fe, params);
 202
 203         if (priv->cfg.config)
 204                 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
 205         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
 206         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
 207         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
 208         msleep(1);
 209
 210         if (params->mode == V4L2_TUNER_RADIO) {
 211                 unsigned char deemphasis[]  = { 0x13, 1 };
 212
 213                 /* FIXME: allow using a different deemphasis */
 214
 215                 if (deemphasis_50)
 216                         deemphasis[1] = 2;
 217
 218                 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
 219                         tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
 220
 221                 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
 222         } else {
 223                 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
 224                 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
 225                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
 226                 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
 227                 if (priv->tda8290_easy_mode & 0x60)
 228                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
 229                 else
 230                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
 231                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
 232         }
 233
 234         tda8290_i2c_bridge(fe, 1);
 235
 236         if (fe->ops.tuner_ops.set_analog_params)
 237                 fe->ops.tuner_ops.set_analog_params(fe, params);
 238
 239         for (i = 0; i < 3; i++) {
 240                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 241                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 242                 if (pll_stat & 0x80) {
 243                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 244                         tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 245                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 246                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 247                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
 248                         break;
 249                 } else {
 250                         tuner_dbg("tda8290 not locked, no signal?\n");
 251                         msleep(100);
 252                 }
 253         }
 254         /* adjust headroom resp. gain */
 255         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
 256                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
 257                            agc_stat, adc_sat, pll_stat & 0x80);
 258                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
 259                 msleep(100);
 260                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 261                 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 262                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 263                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 264                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
 265                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
 266                                    agc_stat, pll_stat & 0x80);
 267                         if (priv->cfg.agcf)
 268                                 priv->cfg.agcf(fe);
 269                         msleep(100);
 270                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 271                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 272                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 273                         tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 274                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
 275                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
 276                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
 277                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
 278                                 msleep(100);
 279                         }
 280                 }
 281         }
 282
 283         /* l/ l' deadlock? */
 284         if(priv->tda8290_easy_mode & 0x60) {
 285                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 286                 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 287                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 288                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 289                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
 290                         tuner_dbg("trying to resolve SECAM L deadlock\n");
 291                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
 292                         msleep(40);
 293                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
 294                 }
 295         }
 296
 297         tda8290_i2c_bridge(fe, 0);
 298         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
 299 }
 300
 301 /*---------------------------------------------------------------------*/
 302
 303 static void tda8295_power(struct dvb_frontend *fe, int enable)
 304 {
 305         struct tda8290_priv *priv = fe->analog_demod_priv;
 306         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
 307
 308         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 309         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 310
 311         if (enable)
 312                 buf[1] = 0x01;
 313         else
 314                 buf[1] = 0x03;
 315
 316         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 317 }
 318
 319 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
 320 {
 321         struct tda8290_priv *priv = fe->analog_demod_priv;
 322         unsigned char buf[] = { 0x01, 0x00 };
 323
 324         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 325         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 326
 327         if (enable)
 328                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
 329         else
 330                 buf[1] = 0x00; /* reset active bit */
 331
 332         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 333 }
 334
 335 static void tda8295_set_video_std(struct dvb_frontend *fe)
 336 {
 337         struct tda8290_priv *priv = fe->analog_demod_priv;
 338         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
 339
 340         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 341
 342         tda8295_set_easy_mode(fe, 1);
 343         msleep(20);
 344         tda8295_set_easy_mode(fe, 0);
 345 }
 346
 347 /*---------------------------------------------------------------------*/
 348
 349 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
 350 {
 351         struct tda8290_priv *priv = fe->analog_demod_priv;
 352         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
 353
 354         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 355         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 356
 357         if (enable)
 358                 buf[1] &= ~0x40;
 359         else
 360                 buf[1] |= 0x40;
 361
 362         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 363 }
 364
 365 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
 366 {
 367         struct tda8290_priv *priv = fe->analog_demod_priv;
 368         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
 369         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
 370
 371         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
 372         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
 373         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
 374         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
 375
 376         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
 377
 378         if (enable) {
 379                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
 380                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
 381         }
 382         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
 383         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
 384 }
 385
 386 static int tda8295_has_signal(struct dvb_frontend *fe)
 387 {
 388         struct tda8290_priv *priv = fe->analog_demod_priv;
 389
 390         unsigned char hvpll_stat = 0x26;
 391         unsigned char ret;
 392
 393         tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
 394         tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
 395         return (ret & 0x01) ? 65535 : 0;
 396 }
 397
 398 /*---------------------------------------------------------------------*/
 399
 400 static void tda8295_set_params(struct dvb_frontend *fe,
 401                                struct analog_parameters *params)
 402 {
 403         struct tda8290_priv *priv = fe->analog_demod_priv;
 404
 405         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
 406
 407         set_audio(fe, params);
 408
 409         tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
 410
 411         tda8295_power(fe, 1);
 412         tda8295_agc1_out(fe, 1);
 413
 414         tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
 415         tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
 416
 417         tda8295_set_video_std(fe);
 418
 419         blanking_mode[1] = 0x03;
 420         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
 421         msleep(20);
 422
 423         tda8295_i2c_bridge(fe, 1);
 424
 425         if (fe->ops.tuner_ops.set_analog_params)
 426                 fe->ops.tuner_ops.set_analog_params(fe, params);
 427
 428         if (priv->cfg.agcf)
 429                 priv->cfg.agcf(fe);
 430
 431         if (tda8295_has_signal(fe))
 432                 tuner_dbg("tda8295 is locked\n");
 433         else
 434                 tuner_dbg("tda8295 not locked, no signal?\n");
 435
 436         tda8295_i2c_bridge(fe, 0);
 437 }
 438
 439 /*---------------------------------------------------------------------*/
 440
 441 static int tda8290_has_signal(struct dvb_frontend *fe)
 442 {
 443         struct tda8290_priv *priv = fe->analog_demod_priv;
 444
 445         unsigned char i2c_get_afc[1] = { 0x1B };
 446         unsigned char afc = 0;
 447
 448         tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
 449         tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
 450         return (afc & 0x80)? 65535:0;
 451 }
 452
 453 /*---------------------------------------------------------------------*/
 454
 455 static void tda8290_standby(struct dvb_frontend *fe)
 456 {
 457         struct tda8290_priv *priv = fe->analog_demod_priv;
 458
 459         unsigned char cb1[] = { 0x30, 0xD0 };
 460         unsigned char tda8290_standby[] = { 0x00, 0x02 };
 461         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
 462         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
 463
 464         tda8290_i2c_bridge(fe, 1);
 465         if (priv->ver & TDA8275A)
 466                 cb1[1] = 0x90;
 467         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 468         tda8290_i2c_bridge(fe, 0);
 469         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
 470         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
 471 }
 472
 473 static void tda8295_standby(struct dvb_frontend *fe)
 474 {
 475         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
 476
 477         tda8295_power(fe, 0);
 478 }
 479
 480 static void tda8290_init_if(struct dvb_frontend *fe)
 481 {
 482         struct tda8290_priv *priv = fe->analog_demod_priv;
 483
 484         unsigned char set_VS[] = { 0x30, 0x6F };
 485         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
 486         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
 487
 488         if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
 489                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
 490         else
 491                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
 492         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
 493 }
 494
 495 static void tda8295_init_if(struct dvb_frontend *fe)
 496 {
 497         struct tda8290_priv *priv = fe->analog_demod_priv;
 498
 499         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
 500         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
 501         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
 502         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
 503         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
 504         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
 505         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
 506
 507         tda8295_power(fe, 1);
 508
 509         tda8295_set_easy_mode(fe, 0);
 510         tda8295_set_video_std(fe);
 511
 512         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
 513         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
 514         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
 515         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
 516         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
 517         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
 518         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
 519
 520         tda8295_agc1_out(fe, 0);
 521         tda8295_agc2_out(fe, 0);
 522 }
 523
 524 static void tda8290_init_tuner(struct dvb_frontend *fe)
 525 {
 526         struct tda8290_priv *priv = fe->analog_demod_priv;
 527         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
 528                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
 529         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
 530                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
 531         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
 532                               .buf=tda8275_init, .len = 14};
 533         if (priv->ver & TDA8275A)
 534                 msg.buf = tda8275a_init;
 535
 536         tda8290_i2c_bridge(fe, 1);
 537         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 538         tda8290_i2c_bridge(fe, 0);
 539 }
 540
 541 /*---------------------------------------------------------------------*/
 542
 543 static void tda829x_release(struct dvb_frontend *fe)
 544 {
 545         struct tda8290_priv *priv = fe->analog_demod_priv;
 546
 547         /* only try to release the tuner if we've
 548          * attached it from within this module */
 549         if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
 550                 if (fe->ops.tuner_ops.release)
 551                         fe->ops.tuner_ops.release(fe);
 552
 553         kfree(fe->analog_demod_priv);
 554         fe->analog_demod_priv = NULL;
 555 }
 556
 557 static struct tda18271_config tda829x_tda18271_config = {
 558         .gate    = TDA18271_GATE_ANALOG,
 559 };
 560
 561 static int tda829x_find_tuner(struct dvb_frontend *fe)
 562 {
 563         struct tda8290_priv *priv = fe->analog_demod_priv;
 564         struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
 565         int i, ret, tuners_found;
 566         u32 tuner_addrs;
 567         u8 data;
 568         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
 569
 570         if (!analog_ops->i2c_gate_ctrl) {
 571                 printk(KERN_ERR "tda8290: no gate control were provided!\n");
 572
 573                 return -EINVAL;
 574         }
 575
 576         analog_ops->i2c_gate_ctrl(fe, 1);
 577
 578         /* probe for tuner chip */
 579         tuners_found = 0;
 580         tuner_addrs = 0;
 581         for (i = 0x60; i <= 0x63; i++) {
 582                 msg.addr = i;
 583                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 584                 if (ret == 1) {
 585                         tuners_found++;
 586                         tuner_addrs = (tuner_addrs << 8) + i;
 587                 }
 588         }
 589         /* if there is more than one tuner, we expect the right one is
 590            behind the bridge and we choose the highest address that doesn't
 591            give a response now
 592          */
 593
 594         analog_ops->i2c_gate_ctrl(fe, 0);
 595
 596         if (tuners_found > 1)
 597                 for (i = 0; i < tuners_found; i++) {
 598                         msg.addr = tuner_addrs  & 0xff;
 599                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 600                         if (ret == 1)
 601                                 tuner_addrs = tuner_addrs >> 8;
 602                         else
 603                                 break;
 604                 }
 605
 606         if (tuner_addrs == 0) {
 607                 tuner_addrs = 0x60;
 608                 tuner_info("could not clearly identify tuner address, "
 609                            "defaulting to %x\n", tuner_addrs);
 610         } else {
 611                 tuner_addrs = tuner_addrs & 0xff;
 612                 tuner_info("setting tuner address to %x\n", tuner_addrs);
 613         }
 614         priv->tda827x_addr = tuner_addrs;
 615         msg.addr = tuner_addrs;
 616
 617         analog_ops->i2c_gate_ctrl(fe, 1);
 618         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 619
 620         if (ret != 1) {
 621                 tuner_warn("tuner access failed!\n");
 622                 analog_ops->i2c_gate_ctrl(fe, 0);
 623                 return -EREMOTEIO;
 624         }
 625
 626         if ((data == 0x83) || (data == 0x84)) {
 627                 priv->ver |= TDA18271;
 628                 tda829x_tda18271_config.config = priv->cfg.config;
 629                 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
 630                            priv->i2c_props.adap, &tda829x_tda18271_config);
 631         } else {
 632                 if ((data & 0x3c) == 0)
 633                         priv->ver |= TDA8275;
 634                 else
 635                         priv->ver |= TDA8275A;
 636
 637                 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
 638                            priv->i2c_props.adap, &priv->cfg);
 639                 priv->cfg.switch_addr = priv->i2c_props.addr;
 640         }
 641         if (fe->ops.tuner_ops.init)
 642                 fe->ops.tuner_ops.init(fe);
 643
 644         if (fe->ops.tuner_ops.sleep)
 645                 fe->ops.tuner_ops.sleep(fe);
 646
 647         analog_ops->i2c_gate_ctrl(fe, 0);
 648
 649         return 0;
 650 }
 651
 652 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
 653 {
 654 #define TDA8290_ID 0x89
 655         unsigned char tda8290_id[] = { 0x1f, 0x00 };
 656
 657         /* detect tda8290 */
 658         tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
 659         tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
 660
 661         if (tda8290_id[1] == TDA8290_ID) {
 662                 if (debug)
 663                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
 664                                __func__, i2c_adapter_id(i2c_props->adap),
 665                                i2c_props->addr);
 666                 return 0;
 667         }
 668
 669         return -ENODEV;
 670 }
 671
 672 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
 673 {
 674 #define TDA8295_ID 0x8a
 675         unsigned char tda8295_id[] = { 0x2f, 0x00 };
 676
 677         /* detect tda8295 */
 678         tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
 679         tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
 680
 681         if (tda8295_id[1] == TDA8295_ID) {
 682                 if (debug)
 683                         printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
 684                                __func__, i2c_adapter_id(i2c_props->adap),
 685                                i2c_props->addr);
 686                 return 0;
 687         }
 688
 689         return -ENODEV;
 690 }
 691
 692 static struct analog_demod_ops tda8290_ops = {
 693         .set_params     = tda8290_set_params,
 694         .has_signal     = tda8290_has_signal,
 695         .standby        = tda8290_standby,
 696         .release        = tda829x_release,
 697         .i2c_gate_ctrl  = tda8290_i2c_bridge,
 698 };
 699
 700 static struct analog_demod_ops tda8295_ops = {
 701         .set_params     = tda8295_set_params,
 702         .has_signal     = tda8295_has_signal,
 703         .standby        = tda8295_standby,
 704         .release        = tda829x_release,
 705         .i2c_gate_ctrl  = tda8295_i2c_bridge,
 706 };
 707
 708 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
 709                                     struct i2c_adapter *i2c_adap, u8 i2c_addr,
 710                                     struct tda829x_config *cfg)
 711 {
 712         struct tda8290_priv *priv = NULL;
 713         char *name;
 714
 715         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
 716         if (priv == NULL)
 717                 return NULL;
 718         fe->analog_demod_priv = priv;
 719
 720         priv->i2c_props.addr     = i2c_addr;
 721         priv->i2c_props.adap     = i2c_adap;
 722         priv->i2c_props.name     = "tda829x";
 723         if (cfg)
 724                 priv->cfg.config         = cfg->lna_cfg;
 725
 726         if (tda8290_probe(&priv->i2c_props) == 0) {
 727                 priv->ver = TDA8290;
 728                 memcpy(&fe->ops.analog_ops, &tda8290_ops,
 729                        sizeof(struct analog_demod_ops));
 730         }
 731
 732         if (tda8295_probe(&priv->i2c_props) == 0) {
 733                 priv->ver = TDA8295;
 734                 memcpy(&fe->ops.analog_ops, &tda8295_ops,
 735                        sizeof(struct analog_demod_ops));
 736         }
 737
 738         if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) &&
 739             (tda829x_find_tuner(fe) < 0))
 740                 goto fail;
 741
 742         switch (priv->ver) {
 743         case TDA8290:
 744                 name = "tda8290";
 745                 break;
 746         case TDA8295:
 747                 name = "tda8295";
 748                 break;
 749         case TDA8290 | TDA8275:
 750                 name = "tda8290+75";
 751                 break;
 752         case TDA8295 | TDA8275:
 753                 name = "tda8295+75";
 754                 break;
 755         case TDA8290 | TDA8275A:
 756                 name = "tda8290+75a";
 757                 break;
 758         case TDA8295 | TDA8275A:
 759                 name = "tda8295+75a";
 760                 break;
 761         case TDA8290 | TDA18271:
 762                 name = "tda8290+18271";
 763                 break;
 764         case TDA8295 | TDA18271:
 765                 name = "tda8295+18271";
 766                 break;
 767         default:
 768                 goto fail;
 769         }
 770         tuner_info("type set to %s\n", name);
 771
 772         fe->ops.analog_ops.info.name = name;
 773
 774         if (priv->ver & TDA8290) {
 775                 if (priv->ver & (TDA8275 | TDA8275A))
 776                         tda8290_init_tuner(fe);
 777                 tda8290_init_if(fe);
 778         } else if (priv->ver & TDA8295)
 779                 tda8295_init_if(fe);
 780
 781         return fe;
 782
 783 fail:
 784         tda829x_release(fe);
 785         return NULL;
 786 }
 787 EXPORT_SYMBOL_GPL(tda829x_attach);
 788
 789 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
 790 {
 791         struct tuner_i2c_props i2c_props = {
 792                 .adap = i2c_adap,
 793                 .addr = i2c_addr,
 794         };
 795
 796         unsigned char soft_reset[]   = { 0x00, 0x00 };
 797         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
 798         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
 799         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
 800         unsigned char addr_dto_lsb = 0x07;
 801         unsigned char data;
 802 #define PROBE_BUFFER_SIZE 8
 803         unsigned char buf[PROBE_BUFFER_SIZE];
 804         int i;
 805
 806         /* rule out tda9887, which would return the same byte repeatedly */
 807         tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
 808         tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
 809         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
 810                 if (buf[i] != buf[0])
 811                         break;
 812         }
 813
 814         /* all bytes are equal, not a tda829x - probably a tda9887 */
 815         if (i == PROBE_BUFFER_SIZE)
 816                 return -ENODEV;
 817
 818         if ((tda8290_probe(&i2c_props) == 0) ||
 819             (tda8295_probe(&i2c_props) == 0))
 820                 return 0;
 821
 822         /* fall back to old probing method */
 823         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
 824         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 825         tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 826         tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 827         if (data == 0) {
 828                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
 829                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 830                 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 831                 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 832                 if (data == 0x7b) {
 833                         return 0;
 834                 }
 835         }
 836         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
 837         return -ENODEV;
 838 }
 839 EXPORT_SYMBOL_GPL(tda829x_probe);
 840
 841 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 842 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 843 MODULE_LICENSE("GPL");
 844
 845 /*
 846  * Overrides for Emacs so that we follow Linus's tabbing style.
 847  * ---------------------------------------------------------------------------
 848  * Local variables:
 849  * c-basic-offset: 8
 850  * End:
 851  */