drivers/media/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         struct tda18271_std_map *tda18271_std_map;
  58 };
  59
  60 /*---------------------------------------------------------------------*/
  61
  62 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
  63 {
  64         struct tda8290_priv *priv = fe->analog_demod_priv;
  65
  66         static unsigned char  enable[2] = { 0x21, 0xC0 };
  67         static unsigned char disable[2] = { 0x21, 0x00 };
  68         unsigned char *msg;
  69
  70         if (close) {
  71                 msg = enable;
  72                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  73                 /* let the bridge stabilize */
  74                 msleep(20);
  75         } else {
  76                 msg = disable;
  77                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  78         }
  79
  80         return 0;
  81 }
  82
  83 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
  84 {
  85         struct tda8290_priv *priv = fe->analog_demod_priv;
  86
  87         static unsigned char  enable[2] = { 0x45, 0xc1 };
  88         static unsigned char disable[2] = { 0x46, 0x00 };
  89         static unsigned char buf[3] = { 0x45, 0x01, 0x00 };
  90         unsigned char *msg;
  91
  92         if (close) {
  93                 msg = enable;
  94                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
  95                 /* let the bridge stabilize */
  96                 msleep(20);
  97         } else {
  98                 msg = disable;
  99                 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &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         static unsigned char soft_reset[]  = { 0x00, 0x00 };
 182         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
 183         static unsigned char expert_mode[] = { 0x01, 0x80 };
 184         static unsigned char agc_out_on[]  = { 0x02, 0x00 };
 185         static unsigned char gainset_off[] = { 0x28, 0x14 };
 186         static unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
 187         static unsigned char adc_head_6[]  = { 0x05, 0x04 };
 188         static unsigned char adc_head_9[]  = { 0x05, 0x02 };
 189         static unsigned char adc_head_12[] = { 0x05, 0x01 };
 190         static unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
 191         static unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
 192         static unsigned char gainset_2[]   = { 0x28, 0x64 };
 193         static unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
 194         static unsigned char agc_rst_off[] = { 0x0e, 0x09 };
 195         static unsigned char if_agc_set[]  = { 0x0f, 0x81 };
 196         static unsigned char addr_adc_sat  = 0x1a;
 197         static unsigned char addr_agc_stat = 0x1d;
 198         static unsigned char addr_pll_stat = 0x1b;
 199         static unsigned char adc_sat = 0, agc_stat = 0,
 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
 237         if (fe->ops.analog_ops.i2c_gate_ctrl)
 238                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
 239
 240         if (fe->ops.tuner_ops.set_analog_params)
 241                 fe->ops.tuner_ops.set_analog_params(fe, params);
 242
 243         for (i = 0; i < 3; i++) {
 244                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 245                                          &addr_pll_stat, 1, &pll_stat, 1);
 246                 if (pll_stat & 0x80) {
 247                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 248                                                  &addr_adc_sat, 1,
 249                                                  &adc_sat, 1);
 250                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 251                                                  &addr_agc_stat, 1,
 252                                                  &agc_stat, 1);
 253                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
 254                         break;
 255                 } else {
 256                         tuner_dbg("tda8290 not locked, no signal?\n");
 257                         msleep(100);
 258                 }
 259         }
 260         /* adjust headroom resp. gain */
 261         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
 262                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
 263                            agc_stat, adc_sat, pll_stat & 0x80);
 264                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
 265                 msleep(100);
 266                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 267                                          &addr_agc_stat, 1, &agc_stat, 1);
 268                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 269                                          &addr_pll_stat, 1, &pll_stat, 1);
 270                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
 271                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
 272                                    agc_stat, pll_stat & 0x80);
 273                         if (priv->cfg.agcf)
 274                                 priv->cfg.agcf(fe);
 275                         msleep(100);
 276                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 277                                                  &addr_agc_stat, 1,
 278                                                  &agc_stat, 1);
 279                         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 280                                                  &addr_pll_stat, 1,
 281                                                  &pll_stat, 1);
 282                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
 283                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
 284                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
 285                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
 286                                 msleep(100);
 287                         }
 288                 }
 289         }
 290
 291         /* l/ l' deadlock? */
 292         if(priv->tda8290_easy_mode & 0x60) {
 293                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 294                                          &addr_adc_sat, 1,
 295                                          &adc_sat, 1);
 296                 tuner_i2c_xfer_send_recv(&priv->i2c_props,
 297                                          &addr_pll_stat, 1,
 298                                          &pll_stat, 1);
 299                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
 300                         tuner_dbg("trying to resolve SECAM L deadlock\n");
 301                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
 302                         msleep(40);
 303                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
 304                 }
 305         }
 306
 307         if (fe->ops.analog_ops.i2c_gate_ctrl)
 308                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
 309         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
 310 }
 311
 312 /*---------------------------------------------------------------------*/
 313
 314 static void tda8295_power(struct dvb_frontend *fe, int enable)
 315 {
 316         struct tda8290_priv *priv = fe->analog_demod_priv;
 317         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
 318
 319         tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
 320
 321         if (enable)
 322                 buf[1] = 0x01;
 323         else
 324                 buf[1] = 0x03;
 325
 326         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 327 }
 328
 329 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
 330 {
 331         struct tda8290_priv *priv = fe->analog_demod_priv;
 332         unsigned char buf[] = { 0x01, 0x00 };
 333
 334         tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
 335
 336         if (enable)
 337                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
 338         else
 339                 buf[1] = 0x00; /* reset active bit */
 340
 341         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 342 }
 343
 344 static void tda8295_set_video_std(struct dvb_frontend *fe)
 345 {
 346         struct tda8290_priv *priv = fe->analog_demod_priv;
 347         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
 348
 349         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 350
 351         tda8295_set_easy_mode(fe, 1);
 352         msleep(20);
 353         tda8295_set_easy_mode(fe, 0);
 354 }
 355
 356 /*---------------------------------------------------------------------*/
 357
 358 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
 359 {
 360         struct tda8290_priv *priv = fe->analog_demod_priv;
 361         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
 362
 363         tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
 364
 365         if (enable)
 366                 buf[1] &= ~0x40;
 367         else
 368                 buf[1] |= 0x40;
 369
 370         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
 371 }
 372
 373 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
 374 {
 375         struct tda8290_priv *priv = fe->analog_demod_priv;
 376         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
 377         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
 378
 379         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 380                                  &set_gpio_cf[0], 1, &set_gpio_cf[1], 1);
 381         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 382                                  &set_gpio_val[0], 1, &set_gpio_val[1], 1);
 383
 384         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
 385
 386         if (enable) {
 387                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
 388                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
 389         }
 390         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
 391         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
 392 }
 393
 394 static int tda8295_has_signal(struct dvb_frontend *fe, u16 *signal)
 395 {
 396         struct tda8290_priv *priv = fe->analog_demod_priv;
 397
 398         unsigned char hvpll_stat = 0x26;
 399         unsigned char ret;
 400
 401         tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);
 402         *signal = (ret & 0x01) ? 65535 : 0;
 403         return 0;
 404 }
 405
 406 /*---------------------------------------------------------------------*/
 407
 408 static void tda8295_set_params(struct dvb_frontend *fe,
 409                                struct analog_parameters *params)
 410 {
 411         struct tda8290_priv *priv = fe->analog_demod_priv;
 412         u16 signal = 0;
 413         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
 414
 415         set_audio(fe, params);
 416
 417         tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
 418
 419         tda8295_power(fe, 1);
 420         tda8295_agc1_out(fe, 1);
 421
 422         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 423                                  &blanking_mode[0], 1, &blanking_mode[1], 1);
 424
 425         tda8295_set_video_std(fe);
 426
 427         blanking_mode[1] = 0x03;
 428         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
 429         msleep(20);
 430
 431         if (fe->ops.analog_ops.i2c_gate_ctrl)
 432                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
 433
 434         if (fe->ops.tuner_ops.set_analog_params)
 435                 fe->ops.tuner_ops.set_analog_params(fe, params);
 436
 437         if (priv->cfg.agcf)
 438                 priv->cfg.agcf(fe);
 439
 440         tda8295_has_signal(fe, &signal);
 441         if (signal)
 442                 tuner_dbg("tda8295 is locked\n");
 443         else
 444                 tuner_dbg("tda8295 not locked, no signal?\n");
 445
 446         if (fe->ops.analog_ops.i2c_gate_ctrl)
 447                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
 448 }
 449
 450 /*---------------------------------------------------------------------*/
 451
 452 static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal)
 453 {
 454         struct tda8290_priv *priv = fe->analog_demod_priv;
 455
 456         unsigned char i2c_get_afc[1] = { 0x1B };
 457         unsigned char afc = 0;
 458
 459         tuner_i2c_xfer_send_recv(&priv->i2c_props,
 460                                  i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1);
 461         *signal = (afc & 0x80) ? 65535 : 0;
 462         return 0;
 463 }
 464
 465 /*---------------------------------------------------------------------*/
 466
 467 static void tda8290_standby(struct dvb_frontend *fe)
 468 {
 469         struct tda8290_priv *priv = fe->analog_demod_priv;
 470
 471         static unsigned char cb1[] = { 0x30, 0xD0 };
 472         static unsigned char tda8290_standby[] = { 0x00, 0x02 };
 473         static unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
 474         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
 475
 476         if (fe->ops.analog_ops.i2c_gate_ctrl)
 477                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
 478         if (priv->ver & TDA8275A)
 479                 cb1[1] = 0x90;
 480         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 481         if (fe->ops.analog_ops.i2c_gate_ctrl)
 482                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
 483         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
 484         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
 485 }
 486
 487 static void tda8295_standby(struct dvb_frontend *fe)
 488 {
 489         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
 490
 491         tda8295_power(fe, 0);
 492 }
 493
 494 static void tda8290_init_if(struct dvb_frontend *fe)
 495 {
 496         struct tda8290_priv *priv = fe->analog_demod_priv;
 497
 498         static unsigned char set_VS[] = { 0x30, 0x6F };
 499         static unsigned char set_GP00_CF[] = { 0x20, 0x01 };
 500         static unsigned char set_GP01_CF[] = { 0x20, 0x0B };
 501
 502         if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) ||
 503             (priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF))
 504                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
 505         else
 506                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
 507         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
 508 }
 509
 510 static void tda8295_init_if(struct dvb_frontend *fe)
 511 {
 512         struct tda8290_priv *priv = fe->analog_demod_priv;
 513
 514         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
 515         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
 516         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
 517         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
 518         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
 519         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
 520         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
 521
 522         tda8295_power(fe, 1);
 523
 524         tda8295_set_easy_mode(fe, 0);
 525         tda8295_set_video_std(fe);
 526
 527         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
 528         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
 529         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
 530         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
 531         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
 532         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
 533         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
 534
 535         tda8295_agc1_out(fe, 0);
 536         tda8295_agc2_out(fe, 0);
 537 }
 538
 539 static void tda8290_init_tuner(struct dvb_frontend *fe)
 540 {
 541         struct tda8290_priv *priv = fe->analog_demod_priv;
 542         static unsigned char tda8275_init[]  =
 543                 { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
 544                   0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
 545         static unsigned char tda8275a_init[] =
 546                  { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
 547                    0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
 548         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
 549                               .buf=tda8275_init, .len = 14};
 550         if (priv->ver & TDA8275A)
 551                 msg.buf = tda8275a_init;
 552
 553         if (fe->ops.analog_ops.i2c_gate_ctrl)
 554                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
 555         i2c_transfer(priv->i2c_props.adap, &msg, 1);
 556         if (fe->ops.analog_ops.i2c_gate_ctrl)
 557                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
 558 }
 559
 560 /*---------------------------------------------------------------------*/
 561
 562 static void tda829x_release(struct dvb_frontend *fe)
 563 {
 564         struct tda8290_priv *priv = fe->analog_demod_priv;
 565
 566         /* only try to release the tuner if we've
 567          * attached it from within this module */
 568         if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
 569                 if (fe->ops.tuner_ops.release)
 570                         fe->ops.tuner_ops.release(fe);
 571
 572         kfree(fe->analog_demod_priv);
 573         fe->analog_demod_priv = NULL;
 574 }
 575
 576 static struct tda18271_config tda829x_tda18271_config = {
 577         .gate    = TDA18271_GATE_ANALOG,
 578 };
 579
 580 static int tda829x_find_tuner(struct dvb_frontend *fe)
 581 {
 582         struct tda8290_priv *priv = fe->analog_demod_priv;
 583         int i, ret, tuners_found;
 584         u32 tuner_addrs;
 585         u8 data;
 586         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
 587
 588         if (fe->ops.analog_ops.i2c_gate_ctrl)
 589                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
 590
 591         /* probe for tuner chip */
 592         tuners_found = 0;
 593         tuner_addrs = 0;
 594         for (i = 0x60; i <= 0x63; i++) {
 595                 msg.addr = i;
 596                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 597                 if (ret == 1) {
 598                         tuners_found++;
 599                         tuner_addrs = (tuner_addrs << 8) + i;
 600                 }
 601         }
 602         /* if there is more than one tuner, we expect the right one is
 603            behind the bridge and we choose the highest address that doesn't
 604            give a response now
 605          */
 606
 607         if (fe->ops.analog_ops.i2c_gate_ctrl)
 608                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
 609
 610         if (tuners_found > 1)
 611                 for (i = 0; i < tuners_found; i++) {
 612                         msg.addr = tuner_addrs  & 0xff;
 613                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 614                         if (ret == 1)
 615                                 tuner_addrs = tuner_addrs >> 8;
 616                         else
 617                                 break;
 618                 }
 619
 620         if (tuner_addrs == 0) {
 621                 tuner_addrs = 0x60;
 622                 tuner_info("could not clearly identify tuner address, defaulting to %x\n",
 623                            tuner_addrs);
 624         } else {
 625                 tuner_addrs = tuner_addrs & 0xff;
 626                 tuner_info("setting tuner address to %x\n", tuner_addrs);
 627         }
 628         priv->tda827x_addr = tuner_addrs;
 629         msg.addr = tuner_addrs;
 630
 631         if (fe->ops.analog_ops.i2c_gate_ctrl)
 632                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
 633         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
 634
 635         if (ret != 1) {
 636                 tuner_warn("tuner access failed!\n");
 637                 if (fe->ops.analog_ops.i2c_gate_ctrl)
 638                         fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
 639                 return -EREMOTEIO;
 640         }
 641
 642         if ((data == 0x83) || (data == 0x84)) {
 643                 priv->ver |= TDA18271;
 644                 tda829x_tda18271_config.config = priv->cfg.config;
 645                 tda829x_tda18271_config.std_map = priv->tda18271_std_map;
 646                 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
 647                            priv->i2c_props.adap, &tda829x_tda18271_config);
 648         } else {
 649                 if ((data & 0x3c) == 0)
 650                         priv->ver |= TDA8275;
 651                 else
 652                         priv->ver |= TDA8275A;
 653
 654                 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
 655                            priv->i2c_props.adap, &priv->cfg);
 656                 priv->cfg.switch_addr = priv->i2c_props.addr;
 657         }
 658         if (fe->ops.tuner_ops.init)
 659                 fe->ops.tuner_ops.init(fe);
 660
 661         if (fe->ops.tuner_ops.sleep)
 662                 fe->ops.tuner_ops.sleep(fe);
 663
 664         if (fe->ops.analog_ops.i2c_gate_ctrl)
 665                 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
 666
 667         return 0;
 668 }
 669
 670 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
 671 {
 672 #define TDA8290_ID 0x89
 673         u8 reg = 0x1f, id;
 674         struct i2c_msg msg_read[] = {
 675                 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
 676                 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
 677         };
 678
 679         /* detect tda8290 */
 680         if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
 681                 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
 682                                __func__, reg);
 683                 return -ENODEV;
 684         }
 685
 686         if (id == TDA8290_ID) {
 687                 if (debug)
 688                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
 689                                __func__, i2c_adapter_id(i2c_props->adap),
 690                                i2c_props->addr);
 691                 return 0;
 692         }
 693         return -ENODEV;
 694 }
 695
 696 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
 697 {
 698 #define TDA8295_ID 0x8a
 699 #define TDA8295C2_ID 0x8b
 700         u8 reg = 0x2f, id;
 701         struct i2c_msg msg_read[] = {
 702                 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
 703                 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
 704         };
 705
 706         /* detect tda8295 */
 707         if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
 708                 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
 709                                __func__, reg);
 710                 return -ENODEV;
 711         }
 712
 713         if ((id & 0xfe) == TDA8295_ID) {
 714                 if (debug)
 715                         printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n",
 716                                __func__, (id == TDA8295_ID) ?
 717                                "tda8295c1" : "tda8295c2",
 718                                i2c_adapter_id(i2c_props->adap),
 719                                i2c_props->addr);
 720                 return 0;
 721         }
 722
 723         return -ENODEV;
 724 }
 725
 726 static const struct analog_demod_ops tda8290_ops = {
 727         .set_params     = tda8290_set_params,
 728         .has_signal     = tda8290_has_signal,
 729         .standby        = tda8290_standby,
 730         .release        = tda829x_release,
 731         .i2c_gate_ctrl  = tda8290_i2c_bridge,
 732 };
 733
 734 static const struct analog_demod_ops tda8295_ops = {
 735         .set_params     = tda8295_set_params,
 736         .has_signal     = tda8295_has_signal,
 737         .standby        = tda8295_standby,
 738         .release        = tda829x_release,
 739         .i2c_gate_ctrl  = tda8295_i2c_bridge,
 740 };
 741
 742 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
 743                                     struct i2c_adapter *i2c_adap, u8 i2c_addr,
 744                                     struct tda829x_config *cfg)
 745 {
 746         struct tda8290_priv *priv = NULL;
 747         char *name;
 748
 749         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
 750         if (priv == NULL)
 751                 return NULL;
 752         fe->analog_demod_priv = priv;
 753
 754         priv->i2c_props.addr     = i2c_addr;
 755         priv->i2c_props.adap     = i2c_adap;
 756         priv->i2c_props.name     = "tda829x";
 757         if (cfg) {
 758                 priv->cfg.config = cfg->lna_cfg;
 759                 priv->tda18271_std_map = cfg->tda18271_std_map;
 760         }
 761
 762         if (tda8290_probe(&priv->i2c_props) == 0) {
 763                 priv->ver = TDA8290;
 764                 memcpy(&fe->ops.analog_ops, &tda8290_ops,
 765                        sizeof(struct analog_demod_ops));
 766         }
 767
 768         if (tda8295_probe(&priv->i2c_props) == 0) {
 769                 priv->ver = TDA8295;
 770                 memcpy(&fe->ops.analog_ops, &tda8295_ops,
 771                        sizeof(struct analog_demod_ops));
 772         }
 773
 774         if (cfg && cfg->no_i2c_gate)
 775                 fe->ops.analog_ops.i2c_gate_ctrl = NULL;
 776
 777         if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) {
 778                 tda8295_power(fe, 1);
 779                 if (tda829x_find_tuner(fe) < 0)
 780                         goto fail;
 781         }
 782
 783         switch (priv->ver) {
 784         case TDA8290:
 785                 name = "tda8290";
 786                 break;
 787         case TDA8295:
 788                 name = "tda8295";
 789                 break;
 790         case TDA8290 | TDA8275:
 791                 name = "tda8290+75";
 792                 break;
 793         case TDA8295 | TDA8275:
 794                 name = "tda8295+75";
 795                 break;
 796         case TDA8290 | TDA8275A:
 797                 name = "tda8290+75a";
 798                 break;
 799         case TDA8295 | TDA8275A:
 800                 name = "tda8295+75a";
 801                 break;
 802         case TDA8290 | TDA18271:
 803                 name = "tda8290+18271";
 804                 break;
 805         case TDA8295 | TDA18271:
 806                 name = "tda8295+18271";
 807                 break;
 808         default:
 809                 goto fail;
 810         }
 811         tuner_info("type set to %s\n", name);
 812
 813         fe->ops.analog_ops.info.name = name;
 814
 815         if (priv->ver & TDA8290) {
 816                 if (priv->ver & (TDA8275 | TDA8275A))
 817                         tda8290_init_tuner(fe);
 818                 tda8290_init_if(fe);
 819         } else if (priv->ver & TDA8295)
 820                 tda8295_init_if(fe);
 821
 822         return fe;
 823
 824 fail:
 825         memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops));
 826
 827         tda829x_release(fe);
 828         return NULL;
 829 }
 830 EXPORT_SYMBOL_GPL(tda829x_attach);
 831
 832 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
 833 {
 834         struct tuner_i2c_props i2c_props = {
 835                 .adap = i2c_adap,
 836                 .addr = i2c_addr,
 837         };
 838
 839         static unsigned char soft_reset[]   = { 0x00, 0x00 };
 840         static unsigned char easy_mode_b[]  = { 0x01, 0x02 };
 841         static unsigned char easy_mode_g[]  = { 0x01, 0x04 };
 842         static unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
 843         static unsigned char addr_dto_lsb = 0x07;
 844         unsigned char data;
 845 #define PROBE_BUFFER_SIZE 8
 846         unsigned char buf[PROBE_BUFFER_SIZE];
 847         int i;
 848
 849         /* rule out tda9887, which would return the same byte repeatedly */
 850         tuner_i2c_xfer_send_recv(&i2c_props,
 851                                  soft_reset, 1, buf, PROBE_BUFFER_SIZE);
 852         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
 853                 if (buf[i] != buf[0])
 854                         break;
 855         }
 856
 857         /* all bytes are equal, not a tda829x - probably a tda9887 */
 858         if (i == PROBE_BUFFER_SIZE)
 859                 return -ENODEV;
 860
 861         if ((tda8290_probe(&i2c_props) == 0) ||
 862             (tda8295_probe(&i2c_props) == 0))
 863                 return 0;
 864
 865         /* fall back to old probing method */
 866         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
 867         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 868         tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1);
 869         if (data == 0) {
 870                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
 871                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
 872                 tuner_i2c_xfer_send_recv(&i2c_props,
 873                                          &addr_dto_lsb, 1, &data, 1);
 874                 if (data == 0x7b) {
 875                         return 0;
 876                 }
 877         }
 878         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
 879         return -ENODEV;
 880 }
 881 EXPORT_SYMBOL_GPL(tda829x_probe);
 882
 883 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
 884 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
 885 MODULE_LICENSE("GPL");