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-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 /* ---------------------------------------------------------------------- */
  36
  37 struct tda8290_priv {
  38         struct tuner_i2c_props i2c_props;
  39
  40         unsigned char tda8290_easy_mode;
  41
  42         unsigned char tda827x_addr;
  43
  44         unsigned char ver;
  45 #define TDA8290   1
  46 #define TDA8295   2
  47 #define TDA8275   4
  48 #define TDA8275A  8
  49 #define TDA18271 16
  50
  51         struct tda827x_config cfg;
  52 };
  53
  54 /*---------------------------------------------------------------------*/
  55
  56 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
  57 {
  58         struct tda8290_priv *priv = fe->analog_demod_priv;
  59
  60         unsigned char  enable[2] = { 0x21, 0xC0 };
  61         unsigned char disable[2] = { 0x21, 0x00 };
  62         unsigned char *msg;
  63
  64         if (close) {
  65                 msg = enable;
  66                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  67                 /* let the bridge stabilize */
  68                 msleep(20);
  69         } else {
  70                 msg = disable;
  71                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  72         }
  73
  74         return 0;
  75 }
  76
  77 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
  78 {
  79         struct tda8290_priv *priv = fe->analog_demod_priv;
  80
  81         unsigned char  enable[2] = { 0x45, 0xc1 };
  82         unsigned char disable[2] = { 0x46, 0x00 };
  83         unsigned char buf[3] = { 0x45, 0x01, 0x00 };
  84         unsigned char *msg;
  85
  86         if (close) {
  87                 msg = enable;
  88                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  89                 /* let the bridge stabilize */
  90                 msleep(20);
  91         } else {
  92                 msg = disable;
  93                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
  94                 tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1);
  95
  96                 buf[2] = msg[1];
  97                 buf[2] &= ~0x04;
  98                 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
  99                 msleep(5);
 100
 101                 msg[1] |= 0x04;
 102                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
 103         }
 104
 105         return 0;
 106 }
 107
 108 /*---------------------------------------------------------------------*/
 109
 110 static void set_audio(struct dvb_frontend *fe,
 111                       struct analog_parameters *params)
 112 {
 113         struct tda8290_priv *priv = fe->analog_demod_priv;
 114         char* mode;
 115
 116         if (params->std & V4L2_STD_MN) {
 117                 priv->tda8290_easy_mode = 0x01;
 118                 mode = "MN";
 119         } else if (params->std & V4L2_STD_B) {
 120                 priv->tda8290_easy_mode = 0x02;
 121                 mode = "B";
 122         } else if (params->std & V4L2_STD_GH) {
 123                 priv->tda8290_easy_mode = 0x04;
 124                 mode = "GH";
 125         } else if (params->std & V4L2_STD_PAL_I) {
 126                 priv->tda8290_easy_mode = 0x08;
 127                 mode = "I";
 128         } else if (params->std & V4L2_STD_DK) {
 129                 priv->tda8290_easy_mode = 0x10;
 130                 mode = "DK";
 131         } else if (params->std & V4L2_STD_SECAM_L) {
 132                 priv->tda8290_easy_mode = 0x20;
 133                 mode = "L";
 134         } else if (params->std & V4L2_STD_SECAM_LC) {
 135                 priv->tda8290_easy_mode = 0x40;
 136                 mode = "LC";
 137         } else {
 138                 priv->tda8290_easy_mode = 0x10;
 139                 mode = "xx";
 140         }
 141
 142         tuner_dbg("setting tda829x to system %s\n", mode);
 143 }
 144
 145 static void tda8290_set_params(struct dvb_frontend *fe,
 146                                struct analog_parameters *params)
 147 {
 148         struct tda8290_priv *priv = fe->analog_demod_priv;
 149
 150         unsigned char soft_reset[]  = { 0x00, 0x00 };
 151         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
 152         unsigned char expert_mode[] = { 0x01, 0x80 };
 153         unsigned char agc_out_on[]  = { 0x02, 0x00 };
 154         unsigned char gainset_off[] = { 0x28, 0x14 };
 155         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
 156         unsigned char adc_head_6[]  = { 0x05, 0x04 };
 157         unsigned char adc_head_9[]  = { 0x05, 0x02 };
 158         unsigned char adc_head_12[] = { 0x05, 0x01 };
 159         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
 160         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
 161         unsigned char gainset_2[]   = { 0x28, 0x64 };
 162         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
 163         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
 164         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
 165         unsigned char addr_adc_sat  = 0x1a;
 166         unsigned char addr_agc_stat = 0x1d;
 167         unsigned char addr_pll_stat = 0x1b;
 168         unsigned char adc_sat, agc_stat,
 169                       pll_stat;
 170         int i;
 171
 172         set_audio(fe, params);
 173
 174         if (priv->cfg.config)
 175                 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
 176         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
 177         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
 178         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
 179         msleep(1);
 180
 181         expert_mode[1] = priv->tda8290_easy_mode + 0x80;
 182         tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
 183         tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
 184         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
 185         if (priv->tda8290_easy_mode & 0x60)
 186                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
 187         else
 188                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
 189         tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
 190
 191         tda8290_i2c_bridge(fe, 1);
 192
 193         if (fe->ops.tuner_ops.set_analog_params)
 194                 fe->ops.tuner_ops.set_analog_params(fe, params);
 195
 196         for (i = 0; i < 3; i++) {
 197                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 198                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 199                 if (pll_stat & 0x80) {
 200                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 201                         tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 202                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 203                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 204                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
 205                         break;
 206                 } else {
 207                         tuner_dbg("tda8290 not locked, no signal?\n");
 208                         msleep(100);
 209                 }
 210         }
 211         /* adjust headroom resp. gain */
 212         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
 213                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
 214                            agc_stat, adc_sat, pll_stat & 0x80);
 215                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
 216                 msleep(100);
 217                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 218                 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 219                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 220                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 221                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
 222                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
 223                                    agc_stat, pll_stat & 0x80);
 224                         if (priv->cfg.agcf)
 225                                 priv->cfg.agcf(fe);
 226                         msleep(100);
 227                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 228                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 229                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 230                         tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 231                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
 232                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
 233                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
 234                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
 235                                 msleep(100);
 236                         }
 237                 }
 238         }
 239
 240         /* l/ l' deadlock? */
 241         if(priv->tda8290_easy_mode & 0x60) {
 242                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 243                 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 244                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 245                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 246                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
 247                         tuner_dbg("trying to resolve SECAM L deadlock\n");
 248                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
 249                         msleep(40);
 250                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
 251                 }
 252         }
 253
 254         tda8290_i2c_bridge(fe, 0);
 255         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
 256 }
 257
 258 /*---------------------------------------------------------------------*/
 259
 260 static void tda8295_power(struct dvb_frontend *fe, int enable)
 261 {
 262         struct tda8290_priv *priv = fe->analog_demod_priv;
 263         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
 264
 265         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 266         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 267
 268         if (enable)
 269                 buf[1] = 0x01;
 270         else
 271                 buf[1] = 0x03;
 272
 273         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 274 }
 275
 276 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
 277 {
 278         struct tda8290_priv *priv = fe->analog_demod_priv;
 279         unsigned char buf[] = { 0x01, 0x00 };
 280
 281         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 282         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 283
 284         if (enable)
 285                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
 286         else
 287                 buf[1] = 0x00; /* reset active bit */
 288
 289         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 290 }
 291
 292 static void tda8295_set_video_std(struct dvb_frontend *fe)
 293 {
 294         struct tda8290_priv *priv = fe->analog_demod_priv;
 295         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
 296
 297         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 298
 299         tda8295_set_easy_mode(fe, 1);
 300         msleep(20);
 301         tda8295_set_easy_mode(fe, 0);
 302 }
 303
 304 /*---------------------------------------------------------------------*/
 305
 306 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
 307 {
 308         struct tda8290_priv *priv = fe->analog_demod_priv;
 309         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
 310
 311         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 312         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 313
 314         if (enable)
 315                 buf[1] &= ~0x40;
 316         else
 317                 buf[1] |= 0x40;
 318
 319         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 320 }
 321
 322 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
 323 {
 324         struct tda8290_priv *priv = fe->analog_demod_priv;
 325         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
 326         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
 327
 328         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
 329         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
 330         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
 331         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
 332
 333         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
 334
 335         if (enable) {
 336                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
 337                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
 338         }
 339         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
 340         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
 341 }
 342
 343 static int tda8295_has_signal(struct dvb_frontend *fe)
 344 {
 345         struct tda8290_priv *priv = fe->analog_demod_priv;
 346
 347         unsigned char hvpll_stat = 0x26;
 348         unsigned char ret;
 349
 350         tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
 351         tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
 352         return (ret & 0x01) ? 65535 : 0;
 353 }
 354
 355 /*---------------------------------------------------------------------*/
 356
 357 static void tda8295_set_params(struct dvb_frontend *fe,
 358                                struct analog_parameters *params)
 359 {
 360         struct tda8290_priv *priv = fe->analog_demod_priv;
 361
 362         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
 363
 364         set_audio(fe, params);
 365
 366         tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
 367
 368         tda8295_power(fe, 1);
 369         tda8295_agc1_out(fe, 1);
 370
 371         tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
 372         tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
 373
 374         tda8295_set_video_std(fe);
 375
 376         blanking_mode[1] = 0x03;
 377         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
 378         msleep(20);
 379
 380         tda8295_i2c_bridge(fe, 1);
 381
 382         if (fe->ops.tuner_ops.set_analog_params)
 383                 fe->ops.tuner_ops.set_analog_params(fe, params);
 384
 385         if (priv->cfg.agcf)
 386                 priv->cfg.agcf(fe);
 387
 388         if (tda8295_has_signal(fe))
 389                 tuner_dbg("tda8295 is locked\n");
 390         else
 391                 tuner_dbg("tda8295 not locked, no signal?\n");
 392
 393         tda8295_i2c_bridge(fe, 0);
 394 }
 395
 396 /*---------------------------------------------------------------------*/
 397
 398 static int tda8290_has_signal(struct dvb_frontend *fe)
 399 {
 400         struct tda8290_priv *priv = fe->analog_demod_priv;
 401
 402         unsigned char i2c_get_afc[1] = { 0x1B };
 403         unsigned char afc = 0;
 404
 405         tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
 406         tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
 407         return (afc & 0x80)? 65535:0;
 408 }
 409
 410 /*---------------------------------------------------------------------*/
 411
 412 static void tda8290_standby(struct dvb_frontend *fe)
 413 {
 414         struct tda8290_priv *priv = fe->analog_demod_priv;
 415
 416         unsigned char cb1[] = { 0x30, 0xD0 };
 417         unsigned char tda8290_standby[] = { 0x00, 0x02 };
 418         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
 419         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
 420
 421         tda8290_i2c_bridge(fe, 1);
 422         if (priv->ver & TDA8275A)
 423                 cb1[1] = 0x90;
 424         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 425         tda8290_i2c_bridge(fe, 0);
 426         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
 427         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
 428 }
 429
 430 static void tda8295_standby(struct dvb_frontend *fe)
 431 {
 432         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
 433
 434         tda8295_power(fe, 0);
 435 }
 436
 437 static void tda8290_init_if(struct dvb_frontend *fe)
 438 {
 439         struct tda8290_priv *priv = fe->analog_demod_priv;
 440
 441         unsigned char set_VS[] = { 0x30, 0x6F };
 442         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
 443         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
 444
 445         if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
 446                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
 447         else
 448                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
 449         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
 450 }
 451
 452 static void tda8295_init_if(struct dvb_frontend *fe)
 453 {
 454         struct tda8290_priv *priv = fe->analog_demod_priv;
 455
 456         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
 457         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
 458         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
 459         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
 460         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
 461         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
 462         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
 463
 464         tda8295_power(fe, 1);
 465
 466         tda8295_set_easy_mode(fe, 0);
 467         tda8295_set_video_std(fe);
 468
 469         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
 470         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
 471         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
 472         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
 473         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
 474         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
 475         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
 476
 477         tda8295_agc1_out(fe, 0);
 478         tda8295_agc2_out(fe, 0);
 479 }
 480
 481 static void tda8290_init_tuner(struct dvb_frontend *fe)
 482 {
 483         struct tda8290_priv *priv = fe->analog_demod_priv;
 484         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
 485                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
 486         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
 487                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
 488         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
 489                               .buf=tda8275_init, .len = 14};
 490         if (priv->ver & TDA8275A)
 491                 msg.buf = tda8275a_init;
 492
 493         tda8290_i2c_bridge(fe, 1);
 494         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 495         tda8290_i2c_bridge(fe, 0);
 496 }
 497
 498 /*---------------------------------------------------------------------*/
 499
 500 static void tda829x_release(struct dvb_frontend *fe)
 501 {
 502         struct tda8290_priv *priv = fe->analog_demod_priv;
 503
 504         /* only try to release the tuner if we've
 505          * attached it from within this module */
 506         if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
 507                 if (fe->ops.tuner_ops.release)
 508                         fe->ops.tuner_ops.release(fe);
 509
 510         kfree(fe->analog_demod_priv);
 511         fe->analog_demod_priv = NULL;
 512 }
 513
 514 static struct tda18271_config tda829x_tda18271_config = {
 515         .gate    = TDA18271_GATE_ANALOG,
 516 };
 517
 518 static int tda829x_find_tuner(struct dvb_frontend *fe)
 519 {
 520         struct tda8290_priv *priv = fe->analog_demod_priv;
 521         struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
 522         int i, ret, tuners_found;
 523         u32 tuner_addrs;
 524         u8 data;
 525         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
 526
 527         if (NULL == analog_ops->i2c_gate_ctrl)
 528                 return -EINVAL;
 529
 530         analog_ops->i2c_gate_ctrl(fe, 1);
 531
 532         /* probe for tuner chip */
 533         tuners_found = 0;
 534         tuner_addrs = 0;
 535         for (i = 0x60; i <= 0x63; i++) {
 536                 msg.addr = i;
 537                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 538                 if (ret == 1) {
 539                         tuners_found++;
 540                         tuner_addrs = (tuner_addrs << 8) + i;
 541                 }
 542         }
 543         /* if there is more than one tuner, we expect the right one is
 544            behind the bridge and we choose the highest address that doesn't
 545            give a response now
 546          */
 547
 548         analog_ops->i2c_gate_ctrl(fe, 0);
 549
 550         if (tuners_found > 1)
 551                 for (i = 0; i < tuners_found; i++) {
 552                         msg.addr = tuner_addrs  & 0xff;
 553                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 554                         if (ret == 1)
 555                                 tuner_addrs = tuner_addrs >> 8;
 556                         else
 557                                 break;
 558                 }
 559
 560         if (tuner_addrs == 0) {
 561                 tuner_addrs = 0x60;
 562                 tuner_info("could not clearly identify tuner address, "
 563                            "defaulting to %x\n", tuner_addrs);
 564         } else {
 565                 tuner_addrs = tuner_addrs & 0xff;
 566                 tuner_info("setting tuner address to %x\n", tuner_addrs);
 567         }
 568         priv->tda827x_addr = tuner_addrs;
 569         msg.addr = tuner_addrs;
 570
 571         analog_ops->i2c_gate_ctrl(fe, 1);
 572         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 573
 574         if (ret != 1) {
 575                 tuner_warn("tuner access failed!\n");
 576                 return -EREMOTEIO;
 577         }
 578
 579         if ((data == 0x83) || (data == 0x84)) {
 580                 priv->ver |= TDA18271;
 581                 tda18271_attach(fe, priv->tda827x_addr,
 582                                 priv->i2c_props.adap,
 583                                 &tda829x_tda18271_config);
 584         } else {
 585                 if ((data & 0x3c) == 0)
 586                         priv->ver |= TDA8275;
 587                 else
 588                         priv->ver |= TDA8275A;
 589
 590                 tda827x_attach(fe, priv->tda827x_addr, priv->i2c_props.adap, &priv->cfg);
 591                 priv->cfg.switch_addr = priv->i2c_props.addr;
 592         }
 593         if (fe->ops.tuner_ops.init)
 594                 fe->ops.tuner_ops.init(fe);
 595
 596         if (fe->ops.tuner_ops.sleep)
 597                 fe->ops.tuner_ops.sleep(fe);
 598
 599         analog_ops->i2c_gate_ctrl(fe, 0);
 600
 601         return 0;
 602 }
 603
 604 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
 605 {
 606 #define TDA8290_ID 0x89
 607         unsigned char tda8290_id[] = { 0x1f, 0x00 };
 608
 609         /* detect tda8290 */
 610         tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
 611         tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
 612
 613         if (tda8290_id[1] == TDA8290_ID) {
 614                 if (debug)
 615                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
 616                                __func__, i2c_adapter_id(i2c_props->adap),
 617                                i2c_props->addr);
 618                 return 0;
 619         }
 620
 621         return -ENODEV;
 622 }
 623
 624 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
 625 {
 626 #define TDA8295_ID 0x8a
 627         unsigned char tda8295_id[] = { 0x2f, 0x00 };
 628
 629         /* detect tda8295 */
 630         tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
 631         tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
 632
 633         if (tda8295_id[1] == TDA8295_ID) {
 634                 if (debug)
 635                         printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
 636                                __func__, i2c_adapter_id(i2c_props->adap),
 637                                i2c_props->addr);
 638                 return 0;
 639         }
 640
 641         return -ENODEV;
 642 }
 643
 644 static struct analog_demod_ops tda8290_ops = {
 645         .set_params     = tda8290_set_params,
 646         .has_signal     = tda8290_has_signal,
 647         .standby        = tda8290_standby,
 648         .release        = tda829x_release,
 649         .i2c_gate_ctrl  = tda8290_i2c_bridge,
 650 };
 651
 652 static struct analog_demod_ops tda8295_ops = {
 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         priv->i2c_props.name     = "tda829x";
 675         if (cfg) {
 676                 priv->cfg.config         = cfg->lna_cfg;
 677                 priv->cfg.tuner_callback = cfg->tuner_callback;
 678         }
 679
 680         if (tda8290_probe(&priv->i2c_props) == 0) {
 681                 priv->ver = TDA8290;
 682                 memcpy(&fe->ops.analog_ops, &tda8290_ops,
 683                        sizeof(struct analog_demod_ops));
 684         }
 685
 686         if (tda8295_probe(&priv->i2c_props) == 0) {
 687                 priv->ver = TDA8295;
 688                 memcpy(&fe->ops.analog_ops, &tda8295_ops,
 689                        sizeof(struct analog_demod_ops));
 690         }
 691
 692         if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) &&
 693             (tda829x_find_tuner(fe) < 0))
 694                 goto fail;
 695
 696         switch (priv->ver) {
 697         case TDA8290:
 698                 name = "tda8290";
 699                 break;
 700         case TDA8295:
 701                 name = "tda8295";
 702                 break;
 703         case TDA8290 | TDA8275:
 704                 name = "tda8290+75";
 705                 break;
 706         case TDA8295 | TDA8275:
 707                 name = "tda8295+75";
 708                 break;
 709         case TDA8290 | TDA8275A:
 710                 name = "tda8290+75a";
 711                 break;
 712         case TDA8295 | TDA8275A:
 713                 name = "tda8295+75a";
 714                 break;
 715         case TDA8290 | TDA18271:
 716                 name = "tda8290+18271";
 717                 break;
 718         case TDA8295 | TDA18271:
 719                 name = "tda8295+18271";
 720                 break;
 721         default:
 722                 goto fail;
 723         }
 724         tuner_info("type set to %s\n", name);
 725
 726         fe->ops.analog_ops.info.name = name;
 727
 728         if (priv->ver & TDA8290) {
 729                 tda8290_init_tuner(fe);
 730                 tda8290_init_if(fe);
 731         } else if (priv->ver & TDA8295)
 732                 tda8295_init_if(fe);
 733
 734         return fe;
 735
 736 fail:
 737         tda829x_release(fe);
 738         return NULL;
 739 }
 740 EXPORT_SYMBOL_GPL(tda829x_attach);
 741
 742 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
 743 {
 744         struct tuner_i2c_props i2c_props = {
 745                 .adap = i2c_adap,
 746                 .addr = i2c_addr,
 747         };
 748
 749         unsigned char soft_reset[]   = { 0x00, 0x00 };
 750         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
 751         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
 752         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
 753         unsigned char addr_dto_lsb = 0x07;
 754         unsigned char data;
 755 #define PROBE_BUFFER_SIZE 8
 756         unsigned char buf[PROBE_BUFFER_SIZE];
 757         int i;
 758
 759         /* rule out tda9887, which would return the same byte repeatedly */
 760         tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
 761         tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
 762         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
 763                 if (buf[i] != buf[0])
 764                         break;
 765         }
 766
 767         /* all bytes are equal, not a tda829x - probably a tda9887 */
 768         if (i == PROBE_BUFFER_SIZE)
 769                 return -ENODEV;
 770
 771         if ((tda8290_probe(&i2c_props) == 0) ||
 772             (tda8295_probe(&i2c_props) == 0))
 773                 return 0;
 774
 775         /* fall back to old probing method */
 776         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
 777         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 778         tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 779         tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 780         if (data == 0) {
 781                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
 782                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 783                 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 784                 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 785                 if (data == 0x7b) {
 786                         return 0;
 787                 }
 788         }
 789         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
 790         return -ENODEV;
 791 }
 792 EXPORT_SYMBOL_GPL(tda829x_probe);
 793
 794 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 795 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 796 MODULE_LICENSE("GPL");
 797
 798 /*
 799  * Overrides for Emacs so that we follow Linus's tabbing style.
 800  * ---------------------------------------------------------------------------
 801  * Local variables:
 802  * c-basic-offset: 8
 803  * End:
 804  */