SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/common/tuners/tda8290.c

   1 /*
   2
   3    i2c tv tuner chip device driver
   4    controls the philips tda8290+75 tuner chip combo.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19
  20    This "tda8290" module was split apart from the original "tuner" module.
  21 */
  22
  23 #include <linux/i2c.h>
  24 #include <linux/slab.h>
  25 #include <linux/delay.h>
  26 #include <linux/videodev2.h>
  27 #include "tuner-i2c.h"
  28 #include "tda8290.h"
  29 #include "tda827x.h"
  30 #include "tda18271.h"
  31
  32 static int debug;
  33 module_param(debug, int, 0644);
  34 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  35
  36 static int deemphasis_50;
  37 module_param(deemphasis_50, int, 0644);
  38 MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
  39
  40 /* ---------------------------------------------------------------------- */
  41
  42 struct tda8290_priv {
  43         struct tuner_i2c_props i2c_props;
  44
  45         unsigned char tda8290_easy_mode;
  46
  47         unsigned char tda827x_addr;
  48
  49         unsigned char ver;
  50 #define TDA8290   1
  51 #define TDA8295   2
  52 #define TDA8275   4
  53 #define TDA8275A  8
  54 #define TDA18271 16
  55
  56         struct tda827x_config cfg;
  57 };
  58
  59 /*---------------------------------------------------------------------*/
  60
  61 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
  62 {
  63         struct tda8290_priv *priv = fe->analog_demod_priv;
  64
  65         unsigned char  enable[2] = { 0x21, 0xC0 };
  66         unsigned char disable[2] = { 0x21, 0x00 };
  67         unsigned char *msg;
  68
  69         if (close) {
  70                 msg = enable;
  71                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  72                 /* let the bridge stabilize */
  73                 msleep(20);
  74         } else {
  75                 msg = disable;
  76                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  77         }
  78
  79         return 0;
  80 }
  81
  82 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
  83 {
  84         struct tda8290_priv *priv = fe->analog_demod_priv;
  85
  86         unsigned char  enable[2] = { 0x45, 0xc1 };
  87         unsigned char disable[2] = { 0x46, 0x00 };
  88         unsigned char buf[3] = { 0x45, 0x01, 0x00 };
  89         unsigned char *msg;
  90
  91         if (close) {
  92                 msg = enable;
  93                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  94                 /* let the bridge stabilize */
  95                 msleep(20);
  96         } else {
  97                 msg = disable;
  98                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
  99                 tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1);
 100
 101                 buf[2] = msg[1];
 102                 buf[2] &= ~0x04;
 103                 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
 104                 msleep(5);
 105
 106                 msg[1] |= 0x04;
 107                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
 108         }
 109
 110         return 0;
 111 }
 112
 113 /*---------------------------------------------------------------------*/
 114
 115 static void set_audio(struct dvb_frontend *fe,
 116                       struct analog_parameters *params)
 117 {
 118         struct tda8290_priv *priv = fe->analog_demod_priv;
 119         char* mode;
 120
 121         if (params->std & V4L2_STD_MN) {
 122                 priv->tda8290_easy_mode = 0x01;
 123                 mode = "MN";
 124         } else if (params->std & V4L2_STD_B) {
 125                 priv->tda8290_easy_mode = 0x02;
 126                 mode = "B";
 127         } else if (params->std & V4L2_STD_GH) {
 128                 priv->tda8290_easy_mode = 0x04;
 129                 mode = "GH";
 130         } else if (params->std & V4L2_STD_PAL_I) {
 131                 priv->tda8290_easy_mode = 0x08;
 132                 mode = "I";
 133         } else if (params->std & V4L2_STD_DK) {
 134                 priv->tda8290_easy_mode = 0x10;
 135                 mode = "DK";
 136         } else if (params->std & V4L2_STD_SECAM_L) {
 137                 priv->tda8290_easy_mode = 0x20;
 138                 mode = "L";
 139         } else if (params->std & V4L2_STD_SECAM_LC) {
 140                 priv->tda8290_easy_mode = 0x40;
 141                 mode = "LC";
 142         } else {
 143                 priv->tda8290_easy_mode = 0x10;
 144                 mode = "xx";
 145         }
 146
 147         if (params->mode == V4L2_TUNER_RADIO) {
 148                 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */
 149                 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01;
 150                 tuner_dbg("setting to radio FM\n");
 151         } else {
 152                 tuner_dbg("setting tda829x to system %s\n", mode);
 153         }
 154 }
 155
 156 static struct {
 157         unsigned char seq[2];
 158 } fm_mode[] = {
 159         { { 0x01, 0x81} },      /* Put device into expert mode */
 160         { { 0x03, 0x48} },      /* Disable NOTCH and VIDEO filters */
 161         { { 0x04, 0x04} },      /* Disable color carrier filter (SSIF) */
 162         { { 0x05, 0x04} },      /* ADC headroom */
 163         { { 0x06, 0x10} },      /* group delay flat */
 164
 165         { { 0x07, 0x00} },      /* use the same radio DTO values as a tda8295 */
 166         { { 0x08, 0x00} },
 167         { { 0x09, 0x80} },
 168         { { 0x0a, 0xda} },
 169         { { 0x0b, 0x4b} },
 170         { { 0x0c, 0x68} },
 171
 172         { { 0x0d, 0x00} },      /* PLL off, no video carrier detect */
 173         { { 0x14, 0x00} },      /* disable auto mute if no video */
 174 };
 175
 176 static void tda8290_set_params(struct dvb_frontend *fe,
 177                                struct analog_parameters *params)
 178 {
 179         struct tda8290_priv *priv = fe->analog_demod_priv;
 180
 181         unsigned char soft_reset[]  = { 0x00, 0x00 };
 182         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
 183         unsigned char expert_mode[] = { 0x01, 0x80 };
 184         unsigned char agc_out_on[]  = { 0x02, 0x00 };
 185         unsigned char gainset_off[] = { 0x28, 0x14 };
 186         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
 187         unsigned char adc_head_6[]  = { 0x05, 0x04 };
 188         unsigned char adc_head_9[]  = { 0x05, 0x02 };
 189         unsigned char adc_head_12[] = { 0x05, 0x01 };
 190         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
 191         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
 192         unsigned char gainset_2[]   = { 0x28, 0x64 };
 193         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
 194         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
 195         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
 196         unsigned char addr_adc_sat  = 0x1a;
 197         unsigned char addr_agc_stat = 0x1d;
 198         unsigned char addr_pll_stat = 0x1b;
 199         unsigned char adc_sat, agc_stat,
 200                       pll_stat;
 201         int i;
 202
 203         set_audio(fe, params);
 204
 205         if (priv->cfg.config)
 206                 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
 207         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
 208         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
 209         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
 210         msleep(1);
 211
 212         if (params->mode == V4L2_TUNER_RADIO) {
 213                 unsigned char deemphasis[]  = { 0x13, 1 };
 214
 215                 /* FIXME: allow using a different deemphasis */
 216
 217                 if (deemphasis_50)
 218                         deemphasis[1] = 2;
 219
 220                 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
 221                         tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
 222
 223                 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
 224         } else {
 225                 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
 226                 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
 227                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
 228                 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
 229                 if (priv->tda8290_easy_mode & 0x60)
 230                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
 231                 else
 232                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
 233                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
 234         }
 235
 236         tda8290_i2c_bridge(fe, 1);
 237
 238         if (fe->ops.tuner_ops.set_analog_params)
 239                 fe->ops.tuner_ops.set_analog_params(fe, params);
 240
 241         for (i = 0; i < 3; i++) {
 242                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 243                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 244                 if (pll_stat & 0x80) {
 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_agc_stat, 1);
 248                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 249                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
 250                         break;
 251                 } else {
 252                         tuner_dbg("tda8290 not locked, no signal?\n");
 253                         msleep(100);
 254                 }
 255         }
 256         /* adjust headroom resp. gain */
 257         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
 258                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
 259                            agc_stat, adc_sat, pll_stat & 0x80);
 260                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
 261                 msleep(100);
 262                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 263                 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 264                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 265                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 266                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
 267                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
 268                                    agc_stat, pll_stat & 0x80);
 269                         if (priv->cfg.agcf)
 270                                 priv->cfg.agcf(fe);
 271                         msleep(100);
 272                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
 273                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
 274                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 275                         tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 276                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
 277                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
 278                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
 279                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
 280                                 msleep(100);
 281                         }
 282                 }
 283         }
 284
 285         /* l/ l' deadlock? */
 286         if(priv->tda8290_easy_mode & 0x60) {
 287                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
 288                 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
 289                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
 290                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
 291                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
 292                         tuner_dbg("trying to resolve SECAM L deadlock\n");
 293                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
 294                         msleep(40);
 295                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
 296                 }
 297         }
 298
 299         tda8290_i2c_bridge(fe, 0);
 300         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
 301 }
 302
 303 /*---------------------------------------------------------------------*/
 304
 305 static void tda8295_power(struct dvb_frontend *fe, int enable)
 306 {
 307         struct tda8290_priv *priv = fe->analog_demod_priv;
 308         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
 309
 310         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 311         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 312
 313         if (enable)
 314                 buf[1] = 0x01;
 315         else
 316                 buf[1] = 0x03;
 317
 318         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 319 }
 320
 321 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
 322 {
 323         struct tda8290_priv *priv = fe->analog_demod_priv;
 324         unsigned char buf[] = { 0x01, 0x00 };
 325
 326         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 327         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 328
 329         if (enable)
 330                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
 331         else
 332                 buf[1] = 0x00; /* reset active bit */
 333
 334         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 335 }
 336
 337 static void tda8295_set_video_std(struct dvb_frontend *fe)
 338 {
 339         struct tda8290_priv *priv = fe->analog_demod_priv;
 340         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
 341
 342         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 343
 344         tda8295_set_easy_mode(fe, 1);
 345         msleep(20);
 346         tda8295_set_easy_mode(fe, 0);
 347 }
 348
 349 /*---------------------------------------------------------------------*/
 350
 351 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
 352 {
 353         struct tda8290_priv *priv = fe->analog_demod_priv;
 354         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
 355
 356         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
 357         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
 358
 359         if (enable)
 360                 buf[1] &= ~0x40;
 361         else
 362                 buf[1] |= 0x40;
 363
 364         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 365 }
 366
 367 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
 368 {
 369         struct tda8290_priv *priv = fe->analog_demod_priv;
 370         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
 371         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
 372
 373         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
 374         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
 375         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
 376         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
 377
 378         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
 379
 380         if (enable) {
 381                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
 382                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
 383         }
 384         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
 385         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
 386 }
 387
 388 static int tda8295_has_signal(struct dvb_frontend *fe)
 389 {
 390         struct tda8290_priv *priv = fe->analog_demod_priv;
 391
 392         unsigned char hvpll_stat = 0x26;
 393         unsigned char ret;
 394
 395         tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
 396         tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
 397         return (ret & 0x01) ? 65535 : 0;
 398 }
 399
 400 /*---------------------------------------------------------------------*/
 401
 402 static void tda8295_set_params(struct dvb_frontend *fe,
 403                                struct analog_parameters *params)
 404 {
 405         struct tda8290_priv *priv = fe->analog_demod_priv;
 406
 407         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
 408
 409         set_audio(fe, params);
 410
 411         tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
 412
 413         tda8295_power(fe, 1);
 414         tda8295_agc1_out(fe, 1);
 415
 416         tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
 417         tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
 418
 419         tda8295_set_video_std(fe);
 420
 421         blanking_mode[1] = 0x03;
 422         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
 423         msleep(20);
 424
 425         tda8295_i2c_bridge(fe, 1);
 426
 427         if (fe->ops.tuner_ops.set_analog_params)
 428                 fe->ops.tuner_ops.set_analog_params(fe, params);
 429
 430         if (priv->cfg.agcf)
 431                 priv->cfg.agcf(fe);
 432
 433         if (tda8295_has_signal(fe))
 434                 tuner_dbg("tda8295 is locked\n");
 435         else
 436                 tuner_dbg("tda8295 not locked, no signal?\n");
 437
 438         tda8295_i2c_bridge(fe, 0);
 439 }
 440
 441 /*---------------------------------------------------------------------*/
 442
 443 static int tda8290_has_signal(struct dvb_frontend *fe)
 444 {
 445         struct tda8290_priv *priv = fe->analog_demod_priv;
 446
 447         unsigned char i2c_get_afc[1] = { 0x1B };
 448         unsigned char afc = 0;
 449
 450         tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
 451         tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
 452         return (afc & 0x80)? 65535:0;
 453 }
 454
 455 /*---------------------------------------------------------------------*/
 456
 457 static void tda8290_standby(struct dvb_frontend *fe)
 458 {
 459         struct tda8290_priv *priv = fe->analog_demod_priv;
 460
 461         unsigned char cb1[] = { 0x30, 0xD0 };
 462         unsigned char tda8290_standby[] = { 0x00, 0x02 };
 463         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
 464         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
 465
 466         tda8290_i2c_bridge(fe, 1);
 467         if (priv->ver & TDA8275A)
 468                 cb1[1] = 0x90;
 469         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 470         tda8290_i2c_bridge(fe, 0);
 471         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
 472         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
 473 }
 474
 475 static void tda8295_standby(struct dvb_frontend *fe)
 476 {
 477         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
 478
 479         tda8295_power(fe, 0);
 480 }
 481
 482 static void tda8290_init_if(struct dvb_frontend *fe)
 483 {
 484         struct tda8290_priv *priv = fe->analog_demod_priv;
 485
 486         unsigned char set_VS[] = { 0x30, 0x6F };
 487         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
 488         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
 489
 490         if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
 491                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
 492         else
 493                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
 494         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
 495 }
 496
 497 static void tda8295_init_if(struct dvb_frontend *fe)
 498 {
 499         struct tda8290_priv *priv = fe->analog_demod_priv;
 500
 501         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
 502         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
 503         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
 504         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
 505         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
 506         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
 507         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
 508
 509         tda8295_power(fe, 1);
 510
 511         tda8295_set_easy_mode(fe, 0);
 512         tda8295_set_video_std(fe);
 513
 514         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
 515         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
 516         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
 517         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
 518         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
 519         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
 520         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
 521
 522         tda8295_agc1_out(fe, 0);
 523         tda8295_agc2_out(fe, 0);
 524 }
 525
 526 static void tda8290_init_tuner(struct dvb_frontend *fe)
 527 {
 528         struct tda8290_priv *priv = fe->analog_demod_priv;
 529         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
 530                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
 531         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
 532                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
 533         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
 534                               .buf=tda8275_init, .len = 14};
 535         if (priv->ver & TDA8275A)
 536                 msg.buf = tda8275a_init;
 537
 538         tda8290_i2c_bridge(fe, 1);
 539         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 540         tda8290_i2c_bridge(fe, 0);
 541 }
 542
 543 /*---------------------------------------------------------------------*/
 544
 545 static void tda829x_release(struct dvb_frontend *fe)
 546 {
 547         struct tda8290_priv *priv = fe->analog_demod_priv;
 548
 549         /* only try to release the tuner if we've
 550          * attached it from within this module */
 551         if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
 552                 if (fe->ops.tuner_ops.release)
 553                         fe->ops.tuner_ops.release(fe);
 554
 555         kfree(fe->analog_demod_priv);
 556         fe->analog_demod_priv = NULL;
 557 }
 558
 559 static struct tda18271_config tda829x_tda18271_config = {
 560         .gate    = TDA18271_GATE_ANALOG,
 561 };
 562
 563 static int tda829x_find_tuner(struct dvb_frontend *fe)
 564 {
 565         struct tda8290_priv *priv = fe->analog_demod_priv;
 566         struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
 567         int i, ret, tuners_found;
 568         u32 tuner_addrs;
 569         u8 data;
 570         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
 571
 572         if (!analog_ops->i2c_gate_ctrl) {
 573                 printk(KERN_ERR "tda8290: no gate control were provided!\n");
 574
 575                 return -EINVAL;
 576         }
 577
 578         analog_ops->i2c_gate_ctrl(fe, 1);
 579
 580         /* probe for tuner chip */
 581         tuners_found = 0;
 582         tuner_addrs = 0;
 583         for (i = 0x60; i <= 0x63; i++) {
 584                 msg.addr = i;
 585                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 586                 if (ret == 1) {
 587                         tuners_found++;
 588                         tuner_addrs = (tuner_addrs << 8) + i;
 589                 }
 590         }
 591         /* if there is more than one tuner, we expect the right one is
 592            behind the bridge and we choose the highest address that doesn't
 593            give a response now
 594          */
 595
 596         analog_ops->i2c_gate_ctrl(fe, 0);
 597
 598         if (tuners_found > 1)
 599                 for (i = 0; i < tuners_found; i++) {
 600                         msg.addr = tuner_addrs  & 0xff;
 601                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 602                         if (ret == 1)
 603                                 tuner_addrs = tuner_addrs >> 8;
 604                         else
 605                                 break;
 606                 }
 607
 608         if (tuner_addrs == 0) {
 609                 tuner_addrs = 0x60;
 610                 tuner_info("could not clearly identify tuner address, "
 611                            "defaulting to %x\n", tuner_addrs);
 612         } else {
 613                 tuner_addrs = tuner_addrs & 0xff;
 614                 tuner_info("setting tuner address to %x\n", tuner_addrs);
 615         }
 616         priv->tda827x_addr = tuner_addrs;
 617         msg.addr = tuner_addrs;
 618
 619         analog_ops->i2c_gate_ctrl(fe, 1);
 620         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 621
 622         if (ret != 1) {
 623                 tuner_warn("tuner access failed!\n");
 624                 analog_ops->i2c_gate_ctrl(fe, 0);
 625                 return -EREMOTEIO;
 626         }
 627
 628         if ((data == 0x83) || (data == 0x84)) {
 629                 priv->ver |= TDA18271;
 630                 tda829x_tda18271_config.config = priv->cfg.config;
 631                 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
 632                            priv->i2c_props.adap, &tda829x_tda18271_config);
 633         } else {
 634                 if ((data & 0x3c) == 0)
 635                         priv->ver |= TDA8275;
 636                 else
 637                         priv->ver |= TDA8275A;
 638
 639                 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
 640                            priv->i2c_props.adap, &priv->cfg);
 641                 priv->cfg.switch_addr = priv->i2c_props.addr;
 642         }
 643         if (fe->ops.tuner_ops.init)
 644                 fe->ops.tuner_ops.init(fe);
 645
 646         if (fe->ops.tuner_ops.sleep)
 647                 fe->ops.tuner_ops.sleep(fe);
 648
 649         analog_ops->i2c_gate_ctrl(fe, 0);
 650
 651         return 0;
 652 }
 653
 654 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
 655 {
 656 #define TDA8290_ID 0x89
 657         unsigned char tda8290_id[] = { 0x1f, 0x00 };
 658
 659         /* detect tda8290 */
 660         tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
 661         tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
 662
 663         if (tda8290_id[1] == TDA8290_ID) {
 664                 if (debug)
 665                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
 666                                __func__, i2c_adapter_id(i2c_props->adap),
 667                                i2c_props->addr);
 668                 return 0;
 669         }
 670
 671         return -ENODEV;
 672 }
 673
 674 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
 675 {
 676 #define TDA8295_ID 0x8a
 677 #define TDA8295C2_ID 0x8b
 678         unsigned char tda8295_id[] = { 0x2f, 0x00 };
 679
 680         /* detect tda8295 */
 681         tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
 682         tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
 683
 684         if ((tda8295_id[1] & 0xfe) == TDA8295_ID) {
 685                 if (debug)
 686                         printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n",
 687                                __func__, (tda8295_id[1] == TDA8295_ID) ?
 688                                "tda8295c1" : "tda8295c2",
 689                                i2c_adapter_id(i2c_props->adap),
 690                                i2c_props->addr);
 691                 return 0;
 692         }
 693
 694         return -ENODEV;
 695 }
 696
 697 static struct analog_demod_ops tda8290_ops = {
 698         .set_params     = tda8290_set_params,
 699         .has_signal     = tda8290_has_signal,
 700         .standby        = tda8290_standby,
 701         .release        = tda829x_release,
 702         .i2c_gate_ctrl  = tda8290_i2c_bridge,
 703 };
 704
 705 static struct analog_demod_ops tda8295_ops = {
 706         .set_params     = tda8295_set_params,
 707         .has_signal     = tda8295_has_signal,
 708         .standby        = tda8295_standby,
 709         .release        = tda829x_release,
 710         .i2c_gate_ctrl  = tda8295_i2c_bridge,
 711 };
 712
 713 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
 714                                     struct i2c_adapter *i2c_adap, u8 i2c_addr,
 715                                     struct tda829x_config *cfg)
 716 {
 717         struct tda8290_priv *priv = NULL;
 718         char *name;
 719
 720         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
 721         if (priv == NULL)
 722                 return NULL;
 723         fe->analog_demod_priv = priv;
 724
 725         priv->i2c_props.addr     = i2c_addr;
 726         priv->i2c_props.adap     = i2c_adap;
 727         priv->i2c_props.name     = "tda829x";
 728         if (cfg)
 729                 priv->cfg.config         = cfg->lna_cfg;
 730
 731         if (tda8290_probe(&priv->i2c_props) == 0) {
 732                 priv->ver = TDA8290;
 733                 memcpy(&fe->ops.analog_ops, &tda8290_ops,
 734                        sizeof(struct analog_demod_ops));
 735         }
 736
 737         if (tda8295_probe(&priv->i2c_props) == 0) {
 738                 priv->ver = TDA8295;
 739                 memcpy(&fe->ops.analog_ops, &tda8295_ops,
 740                        sizeof(struct analog_demod_ops));
 741         }
 742
 743         if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) &&
 744             (tda829x_find_tuner(fe) < 0))
 745                 goto fail;
 746
 747         switch (priv->ver) {
 748         case TDA8290:
 749                 name = "tda8290";
 750                 break;
 751         case TDA8295:
 752                 name = "tda8295";
 753                 break;
 754         case TDA8290 | TDA8275:
 755                 name = "tda8290+75";
 756                 break;
 757         case TDA8295 | TDA8275:
 758                 name = "tda8295+75";
 759                 break;
 760         case TDA8290 | TDA8275A:
 761                 name = "tda8290+75a";
 762                 break;
 763         case TDA8295 | TDA8275A:
 764                 name = "tda8295+75a";
 765                 break;
 766         case TDA8290 | TDA18271:
 767                 name = "tda8290+18271";
 768                 break;
 769         case TDA8295 | TDA18271:
 770                 name = "tda8295+18271";
 771                 break;
 772         default:
 773                 goto fail;
 774         }
 775         tuner_info("type set to %s\n", name);
 776
 777         fe->ops.analog_ops.info.name = name;
 778
 779         if (priv->ver & TDA8290) {
 780                 if (priv->ver & (TDA8275 | TDA8275A))
 781                         tda8290_init_tuner(fe);
 782                 tda8290_init_if(fe);
 783         } else if (priv->ver & TDA8295)
 784                 tda8295_init_if(fe);
 785
 786         return fe;
 787
 788 fail:
 789         tda829x_release(fe);
 790         return NULL;
 791 }
 792 EXPORT_SYMBOL_GPL(tda829x_attach);
 793
 794 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
 795 {
 796         struct tuner_i2c_props i2c_props = {
 797                 .adap = i2c_adap,
 798                 .addr = i2c_addr,
 799         };
 800
 801         unsigned char soft_reset[]   = { 0x00, 0x00 };
 802         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
 803         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
 804         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
 805         unsigned char addr_dto_lsb = 0x07;
 806         unsigned char data;
 807 #define PROBE_BUFFER_SIZE 8
 808         unsigned char buf[PROBE_BUFFER_SIZE];
 809         int i;
 810
 811         /* rule out tda9887, which would return the same byte repeatedly */
 812         tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
 813         tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
 814         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
 815                 if (buf[i] != buf[0])
 816                         break;
 817         }
 818
 819         /* all bytes are equal, not a tda829x - probably a tda9887 */
 820         if (i == PROBE_BUFFER_SIZE)
 821                 return -ENODEV;
 822
 823         if ((tda8290_probe(&i2c_props) == 0) ||
 824             (tda8295_probe(&i2c_props) == 0))
 825                 return 0;
 826
 827         /* fall back to old probing method */
 828         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
 829         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 830         tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 831         tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 832         if (data == 0) {
 833                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
 834                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 835                 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
 836                 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
 837                 if (data == 0x7b) {
 838                         return 0;
 839                 }
 840         }
 841         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
 842         return -ENODEV;
 843 }
 844 EXPORT_SYMBOL_GPL(tda829x_probe);
 845
 846 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 847 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 848 MODULE_LICENSE("GPL");
 849
 850 /*
 851  * Overrides for Emacs so that we follow Linus's tabbing style.
 852  * ---------------------------------------------------------------------------
 853  * Local variables:
 854  * c-basic-offset: 8
 855  * End:
 856  */