drivers/media/video/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/videodev.h>
  26 #include "tuner-driver.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 #define PREFIX "tda8290"
  37
  38 /* ---------------------------------------------------------------------- */
  39
  40 struct tda8290_priv {
  41         struct tuner_i2c_props i2c_props;
  42
  43         unsigned char tda8290_easy_mode;
  44
  45         unsigned char tda827x_addr;
  46
  47         unsigned char ver;
  48 #define TDA8290   1
  49 #define TDA8295   2
  50 #define TDA8275   4
  51 #define TDA8275A  8
  52 #define TDA18271 16
  53
  54         struct tda827x_config cfg;
  55 };
  56
  57 /*---------------------------------------------------------------------*/
  58
  59 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
  60 {
  61         struct tda8290_priv *priv = fe->analog_demod_priv;
  62
  63         unsigned char  enable[2] = { 0x21, 0xC0 };
  64         unsigned char disable[2] = { 0x21, 0x00 };
  65         unsigned char *msg;
  66
  67         if (close) {
  68                 msg = enable;
  69                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  70                 /* let the bridge stabilize */
  71                 msleep(20);
  72         } else {
  73                 msg = disable;
  74                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  75         }
  76
  77         return 0;
  78 }
  79
  80 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
  81 {
  82         struct tda8290_priv *priv = fe->analog_demod_priv;
  83
  84         unsigned char  enable[2] = { 0x45, 0xc1 };
  85         unsigned char disable[2] = { 0x46, 0x00 };
  86         unsigned char buf[3] = { 0x45, 0x01, 0x00 };
  87         unsigned char *msg;
  88
  89         if (close) {
  90                 msg = enable;
  91                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  92                 /* let the bridge stabilize */
  93                 msleep(20);
  94         } else {
  95                 msg = disable;
  96                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
  97                 tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1);
  98
  99                 buf[2] = msg[1];
 100                 buf[2] &= ~0x04;
 101                 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
 102                 msleep(5);
 103
 104                 msg[1] |= 0x04;
 105                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
 106         }
 107
 108         return 0;
 109 }
 110
 111 /*---------------------------------------------------------------------*/
 112
 113 static void set_audio(struct dvb_frontend *fe,
 114                       struct analog_parameters *params)
 115 {
 116         struct tda8290_priv *priv = fe->analog_demod_priv;
 117         char* mode;
 118
 119         if (params->std & V4L2_STD_MN) {
 120                 priv->tda8290_easy_mode = 0x01;
 121                 mode = "MN";
 122         } else if (params->std & V4L2_STD_B) {
 123                 priv->tda8290_easy_mode = 0x02;
 124                 mode = "B";
 125         } else if (params->std & V4L2_STD_GH) {
 126                 priv->tda8290_easy_mode = 0x04;
 127                 mode = "GH";
 128         } else if (params->std & V4L2_STD_PAL_I) {
 129                 priv->tda8290_easy_mode = 0x08;
 130                 mode = "I";
 131         } else if (params->std & V4L2_STD_DK) {
 132                 priv->tda8290_easy_mode = 0x10;
 133                 mode = "DK";
 134         } else if (params->std & V4L2_STD_SECAM_L) {
 135                 priv->tda8290_easy_mode = 0x20;
 136                 mode = "L";
 137         } else if (params->std & V4L2_STD_SECAM_LC) {
 138                 priv->tda8290_easy_mode = 0x40;
 139                 mode = "LC";
 140         } else {
 141                 priv->tda8290_easy_mode = 0x10;
 142                 mode = "xx";
 143         }
 144
 145         tuner_dbg("setting tda829x to system %s\n", mode);
 146 }
 147
 148 static void tda8290_set_params(struct dvb_frontend *fe,
 149                                struct analog_parameters *params)
 150 {
 151         struct tda8290_priv *priv = fe->analog_demod_priv;
 152
 153         unsigned char soft_reset[]  = { 0x00, 0x00 };
 154         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
 155         unsigned char expert_mode[] = { 0x01, 0x80 };
 156         unsigned char agc_out_on[]  = { 0x02, 0x00 };
 157         unsigned char gainset_off[] = { 0x28, 0x14 };
 158         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
 159         unsigned char adc_head_6[]  = { 0x05, 0x04 };
 160         unsigned char adc_head_9[]  = { 0x05, 0x02 };
 161         unsigned char adc_head_12[] = { 0x05, 0x01 };
 162         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
 163         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
 164         unsigned char gainset_2[]   = { 0x28, 0x64 };
 165         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
 166         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
 167         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
 168         unsigned char addr_adc_sat  = 0x1a;
 169         unsigned char addr_agc_stat = 0x1d;
 170         unsigned char addr_pll_stat = 0x1b;
 171         unsigned char adc_sat, agc_stat,
 172                       pll_stat;
 173         int i;
 174
 175         set_audio(fe, params);
 176
 177         if (priv->cfg.config)
 178                 tuner_dbg("tda827xa config is 0x%02x\n", *priv->cfg.config);
 179         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
 180         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
 181         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
 182         msleep(1);
 183
 184         expert_mode[1] = priv->tda8290_easy_mode + 0x80;
 185         tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
 186         tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
 187         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
 188         if (priv->tda8290_easy_mode & 0x60)
 189                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
 190         else
 191                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
 192         tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
 193
 194         tda8290_i2c_bridge(fe, 1);
 195
 196         if (fe->ops.tuner_ops.set_analog_params)
 197                 fe->ops.tuner_ops.set_analog_params(fe, params);
 198
 199         for (i = 0; i < 3; i++) {
 200                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 201                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 202                 if (pll_stat & 0x80) {
 203                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 204                         tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 205                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 206                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 207                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
 208                         break;
 209                 } else {
 210                         tuner_dbg("tda8290 not locked, no signal?\n");
 211                         msleep(100);
 212                 }
 213         }
 214         /* adjust headroom resp. gain */
 215         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
 216                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
 217                            agc_stat, adc_sat, pll_stat & 0x80);
 218                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
 219                 msleep(100);
 220                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 221                 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 222                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 223                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 224                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
 225                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
 226                                    agc_stat, pll_stat & 0x80);
 227                         if (priv->cfg.agcf)
 228                                 priv->cfg.agcf(fe);
 229                         msleep(100);
 230                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 231                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 232                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 233                         tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 234                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
 235                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
 236                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
 237                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
 238                                 msleep(100);
 239                         }
 240                 }
 241         }
 242
 243         /* l/ l' deadlock? */
 244         if(priv->tda8290_easy_mode & 0x60) {
 245                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 246                 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 247                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 248                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 249                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
 250                         tuner_dbg("trying to resolve SECAM L deadlock\n");
 251                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
 252                         msleep(40);
 253                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
 254                 }
 255         }
 256
 257         tda8290_i2c_bridge(fe, 0);
 258         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
 259 }
 260
 261 /*---------------------------------------------------------------------*/
 262
 263 static void tda8295_power(struct dvb_frontend *fe, int enable)
 264 {
 265         struct tda8290_priv *priv = fe->analog_demod_priv;
 266         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
 267
 268         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 269         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 270
 271         if (enable)
 272                 buf[1] = 0x01;
 273         else
 274                 buf[1] = 0x03;
 275
 276         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 277 }
 278
 279 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
 280 {
 281         struct tda8290_priv *priv = fe->analog_demod_priv;
 282         unsigned char buf[] = { 0x01, 0x00 };
 283
 284         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 285         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 286
 287         if (enable)
 288                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
 289         else
 290                 buf[1] = 0x00; /* reset active bit */
 291
 292         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 293 }
 294
 295 static void tda8295_set_video_std(struct dvb_frontend *fe)
 296 {
 297         struct tda8290_priv *priv = fe->analog_demod_priv;
 298         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
 299
 300         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 301
 302         tda8295_set_easy_mode(fe, 1);
 303         msleep(20);
 304         tda8295_set_easy_mode(fe, 0);
 305 }
 306
 307 /*---------------------------------------------------------------------*/
 308
 309 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
 310 {
 311         struct tda8290_priv *priv = fe->analog_demod_priv;
 312         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
 313
 314         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 315         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 316
 317         if (enable)
 318                 buf[1] &= ~0x40;
 319         else
 320                 buf[1] |= 0x40;
 321
 322         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 323 }
 324
 325 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
 326 {
 327         struct tda8290_priv *priv = fe->analog_demod_priv;
 328         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
 329         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
 330
 331         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
 332         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
 333         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
 334         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
 335
 336         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
 337
 338         if (enable) {
 339                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
 340                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
 341         }
 342         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
 343         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
 344 }
 345
 346 static int tda8295_has_signal(struct dvb_frontend *fe)
 347 {
 348         struct tda8290_priv *priv = fe->analog_demod_priv;
 349
 350         unsigned char hvpll_stat = 0x26;
 351         unsigned char ret;
 352
 353         tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
 354         tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
 355         return (ret & 0x01) ? 65535 : 0;
 356 }
 357
 358 /*---------------------------------------------------------------------*/
 359
 360 static void tda8295_set_params(struct dvb_frontend *fe,
 361                                struct analog_parameters *params)
 362 {
 363         struct tda8290_priv *priv = fe->analog_demod_priv;
 364
 365         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
 366
 367         set_audio(fe, params);
 368
 369         tuner_dbg("%s: freq = %d\n", __FUNCTION__, params->frequency);
 370
 371         tda8295_power(fe, 1);
 372         tda8295_agc1_out(fe, 1);
 373
 374         tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
 375         tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
 376
 377         tda8295_set_video_std(fe);
 378
 379         blanking_mode[1] = 0x03;
 380         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
 381         msleep(20);
 382
 383         tda8295_i2c_bridge(fe, 1);
 384
 385         if (fe->ops.tuner_ops.set_analog_params)
 386                 fe->ops.tuner_ops.set_analog_params(fe, params);
 387
 388         if (priv->cfg.agcf)
 389                 priv->cfg.agcf(fe);
 390
 391         if (tda8295_has_signal(fe))
 392                 tuner_dbg("tda8295 is locked\n");
 393         else
 394                 tuner_dbg("tda8295 not locked, no signal?\n");
 395
 396         tda8295_i2c_bridge(fe, 0);
 397 }
 398
 399 /*---------------------------------------------------------------------*/
 400
 401 static int tda8290_has_signal(struct dvb_frontend *fe)
 402 {
 403         struct tda8290_priv *priv = fe->analog_demod_priv;
 404
 405         unsigned char i2c_get_afc[1] = { 0x1B };
 406         unsigned char afc = 0;
 407
 408         tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
 409         tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
 410         return (afc & 0x80)? 65535:0;
 411 }
 412
 413 /*---------------------------------------------------------------------*/
 414
 415 static void tda8290_standby(struct dvb_frontend *fe)
 416 {
 417         struct tda8290_priv *priv = fe->analog_demod_priv;
 418
 419         unsigned char cb1[] = { 0x30, 0xD0 };
 420         unsigned char tda8290_standby[] = { 0x00, 0x02 };
 421         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
 422         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
 423
 424         tda8290_i2c_bridge(fe, 1);
 425         if (priv->ver & TDA8275A)
 426                 cb1[1] = 0x90;
 427         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 428         tda8290_i2c_bridge(fe, 0);
 429         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
 430         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
 431 }
 432
 433 static void tda8295_standby(struct dvb_frontend *fe)
 434 {
 435         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
 436
 437         tda8295_power(fe, 0);
 438 }
 439
 440 static void tda8290_init_if(struct dvb_frontend *fe)
 441 {
 442         struct tda8290_priv *priv = fe->analog_demod_priv;
 443
 444         unsigned char set_VS[] = { 0x30, 0x6F };
 445         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
 446         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
 447
 448         if ((priv->cfg.config) &&
 449             ((*priv->cfg.config == 1) || (*priv->cfg.config == 2)))
 450                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
 451         else
 452                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
 453         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
 454 }
 455
 456 static void tda8295_init_if(struct dvb_frontend *fe)
 457 {
 458         struct tda8290_priv *priv = fe->analog_demod_priv;
 459
 460         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
 461         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
 462         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
 463         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
 464         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
 465         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
 466         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
 467
 468         tda8295_power(fe, 1);
 469
 470         tda8295_set_easy_mode(fe, 0);
 471         tda8295_set_video_std(fe);
 472
 473         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
 474         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
 475         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
 476         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
 477         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
 478         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
 479         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
 480
 481         tda8295_agc1_out(fe, 0);
 482         tda8295_agc2_out(fe, 0);
 483 }
 484
 485 static void tda8290_init_tuner(struct dvb_frontend *fe)
 486 {
 487         struct tda8290_priv *priv = fe->analog_demod_priv;
 488         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
 489                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
 490         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
 491                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
 492         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
 493                               .buf=tda8275_init, .len = 14};
 494         if (priv->ver & TDA8275A)
 495                 msg.buf = tda8275a_init;
 496
 497         tda8290_i2c_bridge(fe, 1);
 498         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 499         tda8290_i2c_bridge(fe, 0);
 500 }
 501
 502 /*---------------------------------------------------------------------*/
 503
 504 static void tda829x_release(struct dvb_frontend *fe)
 505 {
 506         if (fe->ops.tuner_ops.release)
 507                 fe->ops.tuner_ops.release(fe);
 508
 509         kfree(fe->analog_demod_priv);
 510         fe->analog_demod_priv = NULL;
 511 }
 512
 513 static int tda829x_find_tuner(struct dvb_frontend *fe)
 514 {
 515         struct tda8290_priv *priv = fe->analog_demod_priv;
 516         struct analog_tuner_ops *ops = fe->ops.analog_demod_ops;
 517         int i, ret, tuners_found;
 518         u32 tuner_addrs;
 519         u8 data;
 520         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
 521
 522         if (NULL == ops)
 523                 return -EINVAL;
 524
 525         ops->i2c_gate_ctrl(fe, 1);
 526
 527         /* probe for tuner chip */
 528         tuners_found = 0;
 529         tuner_addrs = 0;
 530         for (i = 0x60; i <= 0x63; i++) {
 531                 msg.addr = i;
 532                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 533                 if (ret == 1) {
 534                         tuners_found++;
 535                         tuner_addrs = (tuner_addrs << 8) + i;
 536                 }
 537         }
 538         /* if there is more than one tuner, we expect the right one is
 539            behind the bridge and we choose the highest address that doesn't
 540            give a response now
 541          */
 542
 543         ops->i2c_gate_ctrl(fe, 0);
 544
 545         if (tuners_found > 1)
 546                 for (i = 0; i < tuners_found; i++) {
 547                         msg.addr = tuner_addrs  & 0xff;
 548                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 549                         if (ret == 1)
 550                                 tuner_addrs = tuner_addrs >> 8;
 551                         else
 552                                 break;
 553                 }
 554
 555         if (tuner_addrs == 0) {
 556                 tuner_addrs = 0x60;
 557                 tuner_info("could not clearly identify tuner address, "
 558                            "defaulting to %x\n", tuner_addrs);
 559         } else {
 560                 tuner_addrs = tuner_addrs & 0xff;
 561                 tuner_info("setting tuner address to %x\n", tuner_addrs);
 562         }
 563         priv->tda827x_addr = tuner_addrs;
 564         msg.addr = tuner_addrs;
 565
 566         ops->i2c_gate_ctrl(fe, 1);
 567         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 568
 569         if (ret != 1) {
 570                 tuner_warn("tuner access failed!\n");
 571                 return -EREMOTEIO;
 572         }
 573
 574         if (data == 0x83) {
 575                 priv->ver |= TDA18271;
 576                 tda18271_attach(fe, priv->tda827x_addr,
 577                                 priv->i2c_props.adap);
 578         } else {
 579                 if ((data & 0x3c) == 0)
 580                         priv->ver |= TDA8275;
 581                 else
 582                         priv->ver |= TDA8275A;
 583
 584                 tda827x_attach(fe, priv->tda827x_addr,
 585                                priv->i2c_props.adap, &priv->cfg);
 586         }
 587         if (fe->ops.tuner_ops.init)
 588                 fe->ops.tuner_ops.init(fe);
 589
 590         if (fe->ops.tuner_ops.sleep)
 591                 fe->ops.tuner_ops.sleep(fe);
 592
 593         ops->i2c_gate_ctrl(fe, 0);
 594
 595         return 0;
 596 }
 597
 598 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
 599 {
 600 #define TDA8290_ID 0x89
 601         unsigned char tda8290_id[] = { 0x1f, 0x00 };
 602
 603         /* detect tda8290 */
 604         tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
 605         tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
 606
 607         if (tda8290_id[1] == TDA8290_ID) {
 608                 if (debug)
 609                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
 610                                __FUNCTION__, i2c_adapter_id(i2c_props->adap),
 611                                i2c_props->addr);
 612                 return 0;
 613         }
 614
 615         return -ENODEV;
 616 }
 617
 618 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
 619 {
 620 #define TDA8295_ID 0x8a
 621         unsigned char tda8295_id[] = { 0x2f, 0x00 };
 622
 623         /* detect tda8295 */
 624         tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
 625         tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
 626
 627         if (tda8295_id[1] == TDA8295_ID) {
 628                 if (debug)
 629                         printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
 630                                __FUNCTION__, i2c_adapter_id(i2c_props->adap),
 631                                i2c_props->addr);
 632                 return 0;
 633         }
 634
 635         return -ENODEV;
 636 }
 637
 638 static struct analog_tuner_ops tda8290_tuner_ops = {
 639         .info           = {
 640                 .name   = "TDA8290",
 641         },
 642         .set_params     = tda8290_set_params,
 643         .has_signal     = tda8290_has_signal,
 644         .standby        = tda8290_standby,
 645         .release        = tda829x_release,
 646         .i2c_gate_ctrl  = tda8290_i2c_bridge,
 647 };
 648
 649 static struct analog_tuner_ops tda8295_tuner_ops = {
 650         .info           = {
 651                 .name   = "TDA8295",
 652         },
 653         .set_params     = tda8295_set_params,
 654         .has_signal     = tda8295_has_signal,
 655         .standby        = tda8295_standby,
 656         .release        = tda829x_release,
 657         .i2c_gate_ctrl  = tda8295_i2c_bridge,
 658 };
 659
 660 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
 661                                     struct i2c_adapter *i2c_adap, u8 i2c_addr,
 662                                     struct tda829x_config *cfg)
 663 {
 664         struct tda8290_priv *priv = NULL;
 665         char *name;
 666
 667         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
 668         if (priv == NULL)
 669                 return NULL;
 670         fe->analog_demod_priv = priv;
 671
 672         priv->i2c_props.addr     = i2c_addr;
 673         priv->i2c_props.adap     = i2c_adap;
 674         if (cfg) {
 675                 priv->cfg.config         = cfg->lna_cfg;
 676                 priv->cfg.tuner_callback = cfg->tuner_callback;
 677         }
 678
 679         if (tda8290_probe(&priv->i2c_props) == 0) {
 680                 priv->ver = TDA8290;
 681                 fe->ops.analog_demod_ops = &tda8290_tuner_ops;
 682         }
 683
 684         if (tda8295_probe(&priv->i2c_props) == 0) {
 685                 priv->ver = TDA8295;
 686                 fe->ops.analog_demod_ops = &tda8295_tuner_ops;
 687         }
 688
 689         if (tda829x_find_tuner(fe) < 0)
 690                 goto fail;
 691
 692         switch (priv->ver) {
 693         case TDA8290 | TDA8275:
 694                 name = "tda8290+75";
 695                 break;
 696         case TDA8295 | TDA8275:
 697                 name = "tda8295+75";
 698                 break;
 699         case TDA8290 | TDA8275A:
 700                 name = "tda8290+75a";
 701                 break;
 702         case TDA8295 | TDA8275A:
 703                 name = "tda8295+75a";
 704                 break;
 705         case TDA8290 | TDA18271:
 706                 name = "tda8290+18271";
 707                 break;
 708         case TDA8295 | TDA18271:
 709                 name = "tda8295+18271";
 710                 break;
 711         default:
 712                 goto fail;
 713         }
 714         tuner_info("type set to %s\n", name);
 715
 716         if (priv->ver & TDA8290) {
 717                 tda8290_init_tuner(fe);
 718                 tda8290_init_if(fe);
 719         } else if (priv->ver & TDA8295)
 720                 tda8295_init_if(fe);
 721
 722         return fe;
 723
 724 fail:
 725         tda829x_release(fe);
 726         fe->ops.analog_demod_ops = NULL;
 727         return NULL;
 728 }
 729 EXPORT_SYMBOL_GPL(tda829x_attach);
 730
 731 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
 732 {
 733         struct tuner_i2c_props i2c_props = {
 734                 .adap = i2c_adap,
 735                 .addr = i2c_addr,
 736         };
 737
 738         unsigned char soft_reset[]   = { 0x00, 0x00 };
 739         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
 740         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
 741         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
 742         unsigned char addr_dto_lsb = 0x07;
 743         unsigned char data;
 744 #define PROBE_BUFFER_SIZE 8
 745         unsigned char buf[PROBE_BUFFER_SIZE];
 746         int i;
 747
 748         /* rule out tda9887, which would return the same byte repeatedly */
 749         tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
 750         tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
 751         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
 752                 if (buf[i] != buf[0])
 753                         break;
 754         }
 755
 756         /* all bytes are equal, not a tda829x - probably a tda9887 */
 757         if (i == PROBE_BUFFER_SIZE)
 758                 return -ENODEV;
 759
 760         if ((tda8290_probe(&i2c_props) == 0) ||
 761             (tda8295_probe(&i2c_props) == 0))
 762                 return 0;
 763
 764         /* fall back to old probing method */
 765         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
 766         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 767         tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 768         tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 769         if (data == 0) {
 770                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
 771                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 772                 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 773                 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 774                 if (data == 0x7b) {
 775                         return 0;
 776                 }
 777         }
 778         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
 779         return -ENODEV;
 780 }
 781 EXPORT_SYMBOL_GPL(tda829x_probe);
 782
 783 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 784 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 785 MODULE_LICENSE("GPL");
 786
 787 /*
 788  * Overrides for Emacs so that we follow Linus's tabbing style.
 789  * ---------------------------------------------------------------------------
 790  * Local variables:
 791  * c-basic-offset: 8
 792  * End:
 793  */