git.oblomov.eu Git - linux-2.6/blob - 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 "tda8290.h"
  27 #include "tda827x.h"
  28 #include "tda18271.h"
  29
  30 static int tuner_debug;
  31 module_param_named(debug, tuner_debug, int, 0644);
  32 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  33
  34 #define PREFIX "tda8290"
  35
  36 /* ---------------------------------------------------------------------- */
  37
  38 struct tda8290_priv {
  39         struct tuner_i2c_props i2c_props;
  40
  41         unsigned char tda8290_easy_mode;
  42
  43         unsigned char tda827x_addr;
  44
  45         unsigned char ver;
  46 #define TDA8290   1
  47 #define TDA8295   2
  48 #define TDA8275   4
  49 #define TDA8275A  8
  50 #define TDA18271 16
  51
  52         struct tda827x_config cfg;
  53
  54         struct tuner *t;
  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         struct tuner *t = priv->t;
 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         tuner_dbg("setting tda829x to system %s\n", mode);
 147 }
 148
 149 static void tda8290_set_params(struct dvb_frontend *fe,
 150                                struct analog_parameters *params)
 151 {
 152         struct tda8290_priv *priv = fe->analog_demod_priv;
 153         struct tuner *t = priv->t;
 154
 155         unsigned char soft_reset[]  = { 0x00, 0x00 };
 156         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
 157         unsigned char expert_mode[] = { 0x01, 0x80 };
 158         unsigned char agc_out_on[]  = { 0x02, 0x00 };
 159         unsigned char gainset_off[] = { 0x28, 0x14 };
 160         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
 161         unsigned char adc_head_6[]  = { 0x05, 0x04 };
 162         unsigned char adc_head_9[]  = { 0x05, 0x02 };
 163         unsigned char adc_head_12[] = { 0x05, 0x01 };
 164         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
 165         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
 166         unsigned char gainset_2[]   = { 0x28, 0x64 };
 167         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
 168         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
 169         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
 170         unsigned char addr_adc_sat  = 0x1a;
 171         unsigned char addr_agc_stat = 0x1d;
 172         unsigned char addr_pll_stat = 0x1b;
 173         unsigned char adc_sat, agc_stat,
 174                       pll_stat;
 175         int i;
 176
 177         set_audio(fe, params);
 178
 179         tuner_dbg("tda827xa config is 0x%02x\n", t->config);
 180         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
 181         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
 182         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
 183         msleep(1);
 184
 185         expert_mode[1] = priv->tda8290_easy_mode + 0x80;
 186         tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
 187         tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
 188         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
 189         if (priv->tda8290_easy_mode & 0x60)
 190                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
 191         else
 192                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
 193         tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
 194
 195         tda8290_i2c_bridge(fe, 1);
 196
 197         if (fe->ops.tuner_ops.set_analog_params)
 198                 fe->ops.tuner_ops.set_analog_params(fe, params);
 199
 200         for (i = 0; i < 3; i++) {
 201                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 202                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 203                 if (pll_stat & 0x80) {
 204                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 205                         tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 206                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 207                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 208                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
 209                         break;
 210                 } else {
 211                         tuner_dbg("tda8290 not locked, no signal?\n");
 212                         msleep(100);
 213                 }
 214         }
 215         /* adjust headroom resp. gain */
 216         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
 217                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
 218                            agc_stat, adc_sat, pll_stat & 0x80);
 219                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
 220                 msleep(100);
 221                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 222                 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 223                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 224                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 225                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
 226                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
 227                                    agc_stat, pll_stat & 0x80);
 228                         if (priv->cfg.agcf)
 229                                 priv->cfg.agcf(fe);
 230                         msleep(100);
 231                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 232                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 233                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 234                         tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 235                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
 236                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
 237                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
 238                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
 239                                 msleep(100);
 240                         }
 241                 }
 242         }
 243
 244         /* l/ l' deadlock? */
 245         if(priv->tda8290_easy_mode & 0x60) {
 246                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 247                 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 248                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 249                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 250                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
 251                         tuner_dbg("trying to resolve SECAM L deadlock\n");
 252                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
 253                         msleep(40);
 254                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
 255                 }
 256         }
 257
 258         tda8290_i2c_bridge(fe, 0);
 259         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
 260 }
 261
 262 /*---------------------------------------------------------------------*/
 263
 264 static void tda8295_power(struct dvb_frontend *fe, int enable)
 265 {
 266         struct tda8290_priv *priv = fe->analog_demod_priv;
 267         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
 268
 269         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 270         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 271
 272         if (enable)
 273                 buf[1] = 0x01;
 274         else
 275                 buf[1] = 0x03;
 276
 277         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 278 }
 279
 280 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
 281 {
 282         struct tda8290_priv *priv = fe->analog_demod_priv;
 283         unsigned char buf[] = { 0x01, 0x00 };
 284
 285         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 286         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 287
 288         if (enable)
 289                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
 290         else
 291                 buf[1] = 0x00; /* reset active bit */
 292
 293         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 294 }
 295
 296 static void tda8295_set_video_std(struct dvb_frontend *fe)
 297 {
 298         struct tda8290_priv *priv = fe->analog_demod_priv;
 299         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
 300
 301         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 302
 303         tda8295_set_easy_mode(fe, 1);
 304         msleep(20);
 305         tda8295_set_easy_mode(fe, 0);
 306 }
 307
 308 /*---------------------------------------------------------------------*/
 309
 310 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
 311 {
 312         struct tda8290_priv *priv = fe->analog_demod_priv;
 313         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
 314
 315         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 316         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 317
 318         if (enable)
 319                 buf[1] &= ~0x40;
 320         else
 321                 buf[1] |= 0x40;
 322
 323         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 324 }
 325
 326 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
 327 {
 328         struct tda8290_priv *priv = fe->analog_demod_priv;
 329         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
 330         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
 331
 332         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
 333         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
 334         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
 335         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
 336
 337         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
 338
 339         if (enable) {
 340                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
 341                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
 342         }
 343         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
 344         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
 345 }
 346
 347 static int tda8295_has_signal(struct dvb_frontend *fe)
 348 {
 349         struct tda8290_priv *priv = fe->analog_demod_priv;
 350
 351         unsigned char hvpll_stat = 0x26;
 352         unsigned char ret;
 353
 354         tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
 355         tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
 356         return (ret & 0x01) ? 65535 : 0;
 357 }
 358
 359 /*---------------------------------------------------------------------*/
 360
 361 static void tda8295_set_params(struct dvb_frontend *fe,
 362                                struct analog_parameters *params)
 363 {
 364         struct tda8290_priv *priv = fe->analog_demod_priv;
 365         struct tuner *t = priv->t;
 366
 367         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
 368
 369         set_audio(fe, params);
 370
 371         tuner_dbg("%s: freq = %d\n", __FUNCTION__, params->frequency);
 372
 373         tda8295_power(fe, 1);
 374         tda8295_agc1_out(fe, 1);
 375
 376         tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
 377         tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
 378
 379         tda8295_set_video_std(fe);
 380
 381         blanking_mode[1] = 0x03;
 382         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
 383         msleep(20);
 384
 385         tda8295_i2c_bridge(fe, 1);
 386
 387         if (fe->ops.tuner_ops.set_analog_params)
 388                 fe->ops.tuner_ops.set_analog_params(fe, params);
 389
 390         if (priv->cfg.agcf)
 391                 priv->cfg.agcf(fe);
 392
 393         if (tda8295_has_signal(fe))
 394                 tuner_dbg("tda8295 is locked\n");
 395         else
 396                 tuner_dbg("tda8295 not locked, no signal?\n");
 397
 398         tda8295_i2c_bridge(fe, 0);
 399 }
 400
 401 /*---------------------------------------------------------------------*/
 402
 403 static int tda8290_has_signal(struct dvb_frontend *fe)
 404 {
 405         struct tda8290_priv *priv = fe->analog_demod_priv;
 406
 407         unsigned char i2c_get_afc[1] = { 0x1B };
 408         unsigned char afc = 0;
 409
 410         tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
 411         tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
 412         return (afc & 0x80)? 65535:0;
 413 }
 414
 415 /*---------------------------------------------------------------------*/
 416
 417 static void tda8290_standby(struct dvb_frontend *fe)
 418 {
 419         struct tda8290_priv *priv = fe->analog_demod_priv;
 420
 421         unsigned char cb1[] = { 0x30, 0xD0 };
 422         unsigned char tda8290_standby[] = { 0x00, 0x02 };
 423         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
 424         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
 425
 426         tda8290_i2c_bridge(fe, 1);
 427         if (priv->ver & TDA8275A)
 428                 cb1[1] = 0x90;
 429         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 430         tda8290_i2c_bridge(fe, 0);
 431         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
 432         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
 433 }
 434
 435 static void tda8295_standby(struct dvb_frontend *fe)
 436 {
 437         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
 438
 439         tda8295_power(fe, 0);
 440 }
 441
 442 static void tda8290_init_if(struct dvb_frontend *fe)
 443 {
 444         struct tda8290_priv *priv = fe->analog_demod_priv;
 445         struct tuner *t = priv->t;
 446
 447         unsigned char set_VS[] = { 0x30, 0x6F };
 448         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
 449         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
 450
 451         if ((t->config == 1) || (t->config == 2))
 452                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
 453         else
 454                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
 455         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
 456 }
 457
 458 static void tda8295_init_if(struct dvb_frontend *fe)
 459 {
 460         struct tda8290_priv *priv = fe->analog_demod_priv;
 461
 462         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
 463         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
 464         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
 465         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
 466         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
 467         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
 468         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
 469
 470         tda8295_power(fe, 1);
 471
 472         tda8295_set_easy_mode(fe, 0);
 473         tda8295_set_video_std(fe);
 474
 475         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
 476         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
 477         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
 478         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
 479         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
 480         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
 481         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
 482
 483         tda8295_agc1_out(fe, 0);
 484         tda8295_agc2_out(fe, 0);
 485 }
 486
 487 static void tda8290_init_tuner(struct dvb_frontend *fe)
 488 {
 489         struct tda8290_priv *priv = fe->analog_demod_priv;
 490         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
 491                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
 492         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
 493                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
 494         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
 495                               .buf=tda8275_init, .len = 14};
 496         if (priv->ver & TDA8275A)
 497                 msg.buf = tda8275a_init;
 498
 499         tda8290_i2c_bridge(fe, 1);
 500         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 501         tda8290_i2c_bridge(fe, 0);
 502 }
 503
 504 /*---------------------------------------------------------------------*/
 505
 506 static void tda829x_release(struct dvb_frontend *fe)
 507 {
 508         if (fe->ops.tuner_ops.release)
 509                 fe->ops.tuner_ops.release(fe);
 510
 511         kfree(fe->analog_demod_priv);
 512         fe->analog_demod_priv = NULL;
 513 }
 514
 515 static int tda829x_find_tuner(struct dvb_frontend *fe)
 516 {
 517         struct tda8290_priv *priv = fe->analog_demod_priv;
 518         struct analog_tuner_ops *ops = fe->ops.analog_demod_ops;
 519         struct tuner *t = priv->t;
 520         int i, ret, tuners_found;
 521         u32 tuner_addrs;
 522         u8 data;
 523         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
 524
 525         if (NULL == ops)
 526                 return -EINVAL;
 527
 528         ops->i2c_gate_ctrl(fe, 1);
 529
 530         /* probe for tuner chip */
 531         tuners_found = 0;
 532         tuner_addrs = 0;
 533         for (i = 0x60; i <= 0x63; i++) {
 534                 msg.addr = i;
 535                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 536                 if (ret == 1) {
 537                         tuners_found++;
 538                         tuner_addrs = (tuner_addrs << 8) + i;
 539                 }
 540         }
 541         /* if there is more than one tuner, we expect the right one is
 542            behind the bridge and we choose the highest address that doesn't
 543            give a response now
 544          */
 545
 546         ops->i2c_gate_ctrl(fe, 0);
 547
 548         if (tuners_found > 1)
 549                 for (i = 0; i < tuners_found; i++) {
 550                         msg.addr = tuner_addrs  & 0xff;
 551                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 552                         if (ret == 1)
 553                                 tuner_addrs = tuner_addrs >> 8;
 554                         else
 555                                 break;
 556                 }
 557
 558         if (tuner_addrs == 0) {
 559                 tuner_addrs = 0x60;
 560                 tuner_info("could not clearly identify tuner address, "
 561                            "defaulting to %x\n", tuner_addrs);
 562         } else {
 563                 tuner_addrs = tuner_addrs & 0xff;
 564                 tuner_info("setting tuner address to %x\n", tuner_addrs);
 565         }
 566         priv->tda827x_addr = tuner_addrs;
 567         msg.addr = tuner_addrs;
 568
 569         ops->i2c_gate_ctrl(fe, 1);
 570         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 571
 572         if (ret != 1) {
 573                 tuner_warn("tuner access failed!\n");
 574                 return -EREMOTEIO;
 575         }
 576
 577         if (data == 0x83) {
 578                 priv->ver |= TDA18271;
 579                 tda18271_attach(fe, priv->tda827x_addr,
 580                                 priv->i2c_props.adap);
 581         } else {
 582                 if ((data & 0x3c) == 0)
 583                         priv->ver |= TDA8275;
 584                 else
 585                         priv->ver |= TDA8275A;
 586
 587                 tda827x_attach(fe, priv->tda827x_addr,
 588                                priv->i2c_props.adap, &priv->cfg);
 589         }
 590         if (fe->ops.tuner_ops.init)
 591                 fe->ops.tuner_ops.init(fe);
 592
 593         if (fe->ops.tuner_ops.sleep)
 594                 fe->ops.tuner_ops.sleep(fe);
 595
 596         ops->i2c_gate_ctrl(fe, 0);
 597
 598         switch (priv->ver) {
 599         case TDA8290 | TDA8275:
 600                 strlcpy(t->i2c->name, "tda8290+75", sizeof(t->i2c->name));
 601                 break;
 602         case TDA8295 | TDA8275:
 603                 strlcpy(t->i2c->name, "tda8295+75", sizeof(t->i2c->name));
 604                 break;
 605         case TDA8290 | TDA8275A:
 606                 strlcpy(t->i2c->name, "tda8290+75a", sizeof(t->i2c->name));
 607                 break;
 608         case TDA8295 | TDA8275A:
 609                 strlcpy(t->i2c->name, "tda8295+75a", sizeof(t->i2c->name));
 610                 break;
 611         case TDA8290 | TDA18271:
 612                 strlcpy(t->i2c->name, "tda8290+18271", sizeof(t->i2c->name));
 613                 break;
 614         case TDA8295 | TDA18271:
 615                 strlcpy(t->i2c->name, "tda8295+18271", sizeof(t->i2c->name));
 616                 break;
 617         default:
 618                 return -EINVAL;
 619         }
 620
 621         return 0;
 622 }
 623
 624 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
 625 {
 626 #define TDA8290_ID 0x89
 627         unsigned char tda8290_id[] = { 0x1f, 0x00 };
 628
 629         /* detect tda8290 */
 630         tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
 631         tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
 632
 633         if (tda8290_id[1] == TDA8290_ID) {
 634                 if (tuner_debug)
 635                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
 636                                __FUNCTION__, i2c_adapter_id(i2c_props->adap),
 637                                i2c_props->addr);
 638                 return 0;
 639         }
 640
 641         return -ENODEV;
 642 }
 643
 644 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
 645 {
 646 #define TDA8295_ID 0x8a
 647         unsigned char tda8295_id[] = { 0x2f, 0x00 };
 648
 649         /* detect tda8295 */
 650         tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
 651         tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
 652
 653         if (tda8295_id[1] == TDA8295_ID) {
 654                 if (tuner_debug)
 655                         printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
 656                                __FUNCTION__, i2c_adapter_id(i2c_props->adap),
 657                                i2c_props->addr);
 658                 return 0;
 659         }
 660
 661         return -ENODEV;
 662 }
 663
 664 static struct analog_tuner_ops tda8290_tuner_ops = {
 665         .set_params     = tda8290_set_params,
 666         .has_signal     = tda8290_has_signal,
 667         .standby        = tda8290_standby,
 668         .release        = tda829x_release,
 669         .i2c_gate_ctrl  = tda8290_i2c_bridge,
 670 };
 671
 672 static struct analog_tuner_ops tda8295_tuner_ops = {
 673         .set_params     = tda8295_set_params,
 674         .has_signal     = tda8295_has_signal,
 675         .standby        = tda8295_standby,
 676         .release        = tda829x_release,
 677         .i2c_gate_ctrl  = tda8295_i2c_bridge,
 678 };
 679
 680 int tda829x_attach(struct tuner *t)
 681 {
 682         struct dvb_frontend *fe = &t->fe;
 683         struct tda8290_priv *priv = NULL;
 684
 685         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
 686         if (priv == NULL)
 687                 return -ENOMEM;
 688         fe->analog_demod_priv = priv;
 689
 690         priv->i2c_props.addr     = t->i2c->addr;
 691         priv->i2c_props.adap     = t->i2c->adapter;
 692         priv->cfg.config         = &t->config;
 693         priv->cfg.tuner_callback = t->tuner_callback;
 694         priv->t = t;
 695
 696         if (tda8290_probe(&priv->i2c_props) == 0) {
 697                 priv->ver = TDA8290;
 698                 fe->ops.analog_demod_ops = &tda8290_tuner_ops;
 699         }
 700
 701         if (tda8295_probe(&priv->i2c_props) == 0) {
 702                 priv->ver = TDA8295;
 703                 fe->ops.analog_demod_ops = &tda8295_tuner_ops;
 704         }
 705
 706         if (tda829x_find_tuner(fe) < 0)
 707                 return -EINVAL;
 708
 709         if (priv->ver & TDA8290) {
 710                 tda8290_init_tuner(fe);
 711                 tda8290_init_if(fe);
 712         } else if (priv->ver & TDA8295)
 713                 tda8295_init_if(fe);
 714
 715         tuner_info("type set to %s\n", t->i2c->name);
 716
 717         t->mode = V4L2_TUNER_ANALOG_TV;
 718
 719         return 0;
 720 }
 721 EXPORT_SYMBOL_GPL(tda829x_attach);
 722
 723 int tda829x_probe(struct tuner *t)
 724 {
 725         struct tuner_i2c_props i2c_props = {
 726                 .adap = t->i2c->adapter,
 727                 .addr = t->i2c->addr
 728         };
 729
 730         unsigned char soft_reset[]   = { 0x00, 0x00 };
 731         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
 732         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
 733         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
 734         unsigned char addr_dto_lsb = 0x07;
 735         unsigned char data;
 736 #define PROBE_BUFFER_SIZE 8
 737         unsigned char buf[PROBE_BUFFER_SIZE];
 738         int i;
 739
 740         /* rule out tda9887, which would return the same byte repeatedly */
 741         tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
 742         tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
 743         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
 744                 if (buf[i] != buf[0])
 745                         break;
 746         }
 747
 748         /* all bytes are equal, not a tda829x - probably a tda9887 */
 749         if (i == PROBE_BUFFER_SIZE)
 750                 return -ENODEV;
 751
 752         if ((tda8290_probe(&i2c_props) == 0) ||
 753             (tda8295_probe(&i2c_props) == 0))
 754                 return 0;
 755
 756         /* fall back to old probing method */
 757         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
 758         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 759         tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 760         tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 761         if (data == 0) {
 762                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
 763                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 764                 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 765                 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 766                 if (data == 0x7b) {
 767                         return 0;
 768                 }
 769         }
 770         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
 771         return -ENODEV;
 772 }
 773 EXPORT_SYMBOL_GPL(tda829x_probe);
 774
 775 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 776 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 777 MODULE_LICENSE("GPL");
 778
 779 /*
 780  * Overrides for Emacs so that we follow Linus's tabbing style.
 781  * ---------------------------------------------------------------------------
 782  * Local variables:
 783  * c-basic-offset: 8
 784  * End:
 785  */