drivers/media/dvb/bt8xx/dst.c

   1 /*
   2     Frontend-driver for TwinHan DST Frontend
   3
   4     Copyright (C) 2003 Jamie Honan
   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
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 */
  22
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/init.h>
  26 #include <linux/string.h>
  27 #include <linux/slab.h>
  28 #include <linux/vmalloc.h>
  29 #include <linux/delay.h>
  30 #include <asm/div64.h>
  31
  32 #include "dvb_frontend.h"
  33 #include "dst_priv.h"
  34 #include "dst.h"
  35
  36 struct dst_state {
  37
  38         struct i2c_adapter* i2c;
  39
  40         struct bt878* bt;
  41
  42         struct dvb_frontend_ops ops;
  43
  44         /* configuration settings */
  45         const struct dst_config* config;
  46
  47         struct dvb_frontend frontend;
  48
  49         /* private demodulator data */
  50         u8 tx_tuna[10];
  51         u8 rx_tuna[10];
  52         u8 rxbuffer[10];
  53         u8 diseq_flags;
  54         u8 dst_type;
  55         u32 type_flags;
  56         u32 frequency;          /* intermediate frequency in kHz for QPSK */
  57         fe_spectral_inversion_t inversion;
  58         u32 symbol_rate;        /* symbol rate in Symbols per second */
  59         fe_code_rate_t fec;
  60         fe_sec_voltage_t voltage;
  61         fe_sec_tone_mode_t tone;
  62         u32 decode_freq;
  63         u8 decode_lock;
  64         u16 decode_strength;
  65         u16 decode_snr;
  66         unsigned long cur_jiff;
  67         u8 k22;
  68         fe_bandwidth_t bandwidth;
  69 };
  70
  71 static unsigned int dst_verbose = 0;
  72 module_param(dst_verbose, int, 0644);
  73 MODULE_PARM_DESC(dst_verbose, "verbose startup messages, default is 1 (yes)");
  74 static unsigned int dst_debug = 0;
  75 module_param(dst_debug, int, 0644);
  76 MODULE_PARM_DESC(dst_debug, "debug messages, default is 0 (no)");
  77
  78 #define dprintk if (dst_debug) printk
  79
  80 #define DST_TYPE_IS_SAT         0
  81 #define DST_TYPE_IS_TERR        1
  82 #define DST_TYPE_IS_CABLE       2
  83
  84 #define DST_TYPE_HAS_NEWTUNE    1
  85 #define DST_TYPE_HAS_TS204      2
  86 #define DST_TYPE_HAS_SYMDIV     4
  87
  88 #define HAS_LOCK        1
  89 #define ATTEMPT_TUNE    2
  90 #define HAS_POWER       4
  91
  92 static void dst_packsize(struct dst_state* state, int psize)
  93 {
  94         union dst_gpio_packet bits;
  95
  96         bits.psize = psize;
  97         bt878_device_control(state->bt, DST_IG_TS, &bits);
  98 }
  99
 100 static int dst_gpio_outb(struct dst_state* state, u32 mask, u32 enbb, u32 outhigh)
 101 {
 102         union dst_gpio_packet enb;
 103         union dst_gpio_packet bits;
 104         int err;
 105
 106         enb.enb.mask = mask;
 107         enb.enb.enable = enbb;
 108         if ((err = bt878_device_control(state->bt, DST_IG_ENABLE, &enb)) < 0) {
 109                 dprintk("%s: dst_gpio_enb error (err == %i, mask == 0x%02x, enb == 0x%02x)\n", __FUNCTION__, err, mask, enbb);
 110                 return -EREMOTEIO;
 111         }
 112
 113         /* because complete disabling means no output, no need to do output packet */
 114         if (enbb == 0)
 115                 return 0;
 116
 117         bits.outp.mask = enbb;
 118         bits.outp.highvals = outhigh;
 119
 120         if ((err = bt878_device_control(state->bt, DST_IG_WRITE, &bits)) < 0) {
 121                 dprintk("%s: dst_gpio_outb error (err == %i, enbb == 0x%02x, outhigh == 0x%02x)\n", __FUNCTION__, err, enbb, outhigh);
 122                 return -EREMOTEIO;
 123         }
 124         return 0;
 125 }
 126
 127 static int dst_gpio_inb(struct dst_state *state, u8 * result)
 128 {
 129         union dst_gpio_packet rd_packet;
 130         int err;
 131
 132         *result = 0;
 133
 134         if ((err = bt878_device_control(state->bt, DST_IG_READ, &rd_packet)) < 0) {
 135                 dprintk("%s: dst_gpio_inb error (err == %i)\n", __FUNCTION__, err);
 136                 return -EREMOTEIO;
 137         }
 138
 139         *result = (u8) rd_packet.rd.value;
 140         return 0;
 141 }
 142
 143 #define DST_I2C_ENABLE  1
 144 #define DST_8820        2
 145
 146 static int dst_reset8820(struct dst_state *state)
 147 {
 148         int retval;
 149         /* pull 8820 gpio pin low, wait, high, wait, then low */
 150         // dprintk ("%s: reset 8820\n", __FUNCTION__);
 151         retval = dst_gpio_outb(state, DST_8820, DST_8820, 0);
 152         if (retval < 0)
 153                 return retval;
 154         msleep(10);
 155         retval = dst_gpio_outb(state, DST_8820, DST_8820, DST_8820);
 156         if (retval < 0)
 157                 return retval;
 158         /* wait for more feedback on what works here *
 159            msleep(10);
 160            retval = dst_gpio_outb(dst, DST_8820, DST_8820, 0);
 161            if (retval < 0)
 162            return retval;
 163          */
 164         return 0;
 165 }
 166
 167 static int dst_i2c_enable(struct dst_state *state)
 168 {
 169         int retval;
 170         /* pull I2C enable gpio pin low, wait */
 171         // dprintk ("%s: i2c enable\n", __FUNCTION__);
 172         retval = dst_gpio_outb(state, ~0, DST_I2C_ENABLE, 0);
 173         if (retval < 0)
 174                 return retval;
 175         // dprintk ("%s: i2c enable delay\n", __FUNCTION__);
 176         msleep(33);
 177         return 0;
 178 }
 179
 180 static int dst_i2c_disable(struct dst_state *state)
 181 {
 182         int retval;
 183         /* release I2C enable gpio pin, wait */
 184         // dprintk ("%s: i2c disable\n", __FUNCTION__);
 185         retval = dst_gpio_outb(state, ~0, 0, 0);
 186         if (retval < 0)
 187                 return retval;
 188         // dprintk ("%s: i2c disable delay\n", __FUNCTION__);
 189         msleep(33);
 190         return 0;
 191 }
 192
 193 static int dst_wait_dst_ready(struct dst_state *state)
 194 {
 195         u8 reply;
 196         int retval;
 197         int i;
 198         for (i = 0; i < 200; i++) {
 199                 retval = dst_gpio_inb(state, &reply);
 200                 if (retval < 0)
 201                         return retval;
 202                 if ((reply & DST_I2C_ENABLE) == 0) {
 203                         dprintk("%s: dst wait ready after %d\n", __FUNCTION__, i);
 204                         return 1;
 205                 }
 206                 msleep(10);
 207         }
 208         dprintk("%s: dst wait NOT ready after %d\n", __FUNCTION__, i);
 209         return 0;
 210 }
 211
 212 static int write_dst(struct dst_state *state, u8 * data, u8 len)
 213 {
 214         struct i2c_msg msg = {
 215                 .addr = state->config->demod_address,.flags = 0,.buf = data,.len = len
 216         };
 217         int err;
 218         int cnt;
 219
 220         if (dst_debug && dst_verbose) {
 221                 u8 i;
 222                 dprintk("%s writing", __FUNCTION__);
 223                 for (i = 0; i < len; i++) {
 224                         dprintk(" 0x%02x", data[i]);
 225                 }
 226                 dprintk("\n");
 227         }
 228         msleep(30);
 229         for (cnt = 0; cnt < 4; cnt++) {
 230                 if ((err = i2c_transfer(state->i2c, &msg, 1)) < 0) {
 231                         dprintk("%s: write_dst error (err == %i, len == 0x%02x, b0 == 0x%02x)\n", __FUNCTION__, err, len, data[0]);
 232                         dst_i2c_disable(state);
 233                         msleep(500);
 234                         dst_i2c_enable(state);
 235                         msleep(500);
 236                         continue;
 237                 } else
 238                         break;
 239         }
 240         if (cnt >= 4)
 241                 return -EREMOTEIO;
 242         return 0;
 243 }
 244
 245 static int read_dst(struct dst_state *state, u8 * ret, u8 len)
 246 {
 247         struct i2c_msg msg = {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = ret,.len = len };
 248         int err;
 249         int cnt;
 250
 251         for (cnt = 0; cnt < 4; cnt++) {
 252                 if ((err = i2c_transfer(state->i2c, &msg, 1)) < 0) {
 253                         dprintk("%s: read_dst error (err == %i, len == 0x%02x, b0 == 0x%02x)\n", __FUNCTION__, err, len, ret[0]);
 254                         dst_i2c_disable(state);
 255                         dst_i2c_enable(state);
 256                         continue;
 257                 } else
 258                         break;
 259         }
 260         if (cnt >= 4)
 261                 return -EREMOTEIO;
 262         dprintk("%s reply is 0x%x\n", __FUNCTION__, ret[0]);
 263         if (dst_debug && dst_verbose) {
 264                 for (err = 1; err < len; err++)
 265                         dprintk(" 0x%x", ret[err]);
 266                 if (err > 1)
 267                         dprintk("\n");
 268         }
 269         return 0;
 270 }
 271
 272 static int dst_set_freq(struct dst_state *state, u32 freq)
 273 {
 274         u8 *val;
 275
 276         state->frequency = freq;
 277
 278         // dprintk("%s: set frequency %u\n", __FUNCTION__, freq);
 279         if (state->dst_type == DST_TYPE_IS_SAT) {
 280                 freq = freq / 1000;
 281                 if (freq < 950 || freq > 2150)
 282                         return -EINVAL;
 283                 val = &state->tx_tuna[0];
 284                 val[2] = (freq >> 8) & 0x7f;
 285                 val[3] = (u8) freq;
 286                 val[4] = 1;
 287                 val[8] &= ~4;
 288                 if (freq < 1531)
 289                         val[8] |= 4;
 290         } else if (state->dst_type == DST_TYPE_IS_TERR) {
 291                 freq = freq / 1000;
 292                 if (freq < 137000 || freq > 858000)
 293                         return -EINVAL;
 294                 val = &state->tx_tuna[0];
 295                 val[2] = (freq >> 16) & 0xff;
 296                 val[3] = (freq >> 8) & 0xff;
 297                 val[4] = (u8) freq;
 298                 val[5] = 0;
 299                 switch (state->bandwidth) {
 300                 case BANDWIDTH_6_MHZ:
 301                         val[6] = 6;
 302                         break;
 303
 304                 case BANDWIDTH_7_MHZ:
 305                 case BANDWIDTH_AUTO:
 306                         val[6] = 7;
 307                         break;
 308
 309                 case BANDWIDTH_8_MHZ:
 310                         val[6] = 8;
 311                         break;
 312                 }
 313
 314                 val[7] = 0;
 315                 val[8] = 0;
 316         } else if (state->dst_type == DST_TYPE_IS_CABLE) {
 317                 /* guess till will get one */
 318                 freq = freq / 1000;
 319                 val = &state->tx_tuna[0];
 320                 val[2] = (freq >> 16) & 0xff;
 321                 val[3] = (freq >> 8) & 0xff;
 322                 val[4] = (u8) freq;
 323         } else
 324                 return -EINVAL;
 325         return 0;
 326 }
 327
 328 static int dst_set_bandwidth(struct dst_state* state, fe_bandwidth_t bandwidth)
 329 {
 330         u8 *val;
 331
 332         state->bandwidth = bandwidth;
 333
 334         if (state->dst_type != DST_TYPE_IS_TERR)
 335                 return 0;
 336
 337         val = &state->tx_tuna[0];
 338         switch (bandwidth) {
 339         case BANDWIDTH_6_MHZ:
 340                 val[6] = 6;
 341                 break;
 342
 343         case BANDWIDTH_7_MHZ:
 344                 val[6] = 7;
 345                 break;
 346
 347         case BANDWIDTH_8_MHZ:
 348                 val[6] = 8;
 349                 break;
 350
 351         default:
 352                 return -EINVAL;
 353         }
 354         return 0;
 355 }
 356
 357 static int dst_set_inversion(struct dst_state* state, fe_spectral_inversion_t inversion)
 358 {
 359         u8 *val;
 360
 361         state->inversion = inversion;
 362
 363         val = &state->tx_tuna[0];
 364
 365         val[8] &= ~0x80;
 366
 367         switch (inversion) {
 368         case INVERSION_OFF:
 369                 break;
 370         case INVERSION_ON:
 371                 val[8] |= 0x80;
 372                 break;
 373         default:
 374                 return -EINVAL;
 375         }
 376         return 0;
 377 }
 378
 379 static int dst_set_fec(struct dst_state* state, fe_code_rate_t fec)
 380 {
 381         state->fec = fec;
 382         return 0;
 383 }
 384
 385 static fe_code_rate_t dst_get_fec(struct dst_state* state)
 386 {
 387         return state->fec;
 388 }
 389
 390 static int dst_set_symbolrate(struct dst_state* state, u32 srate)
 391 {
 392         u8 *val;
 393         u32 symcalc;
 394         u64 sval;
 395
 396         state->symbol_rate = srate;
 397
 398         if (state->dst_type == DST_TYPE_IS_TERR) {
 399                 return 0;
 400         }
 401         // dprintk("%s: set srate %u\n", __FUNCTION__, srate);
 402         srate /= 1000;
 403         val = &state->tx_tuna[0];
 404
 405         if (state->type_flags & DST_TYPE_HAS_SYMDIV) {
 406                 sval = srate;
 407                 sval <<= 20;
 408                 do_div(sval, 88000);
 409                 symcalc = (u32) sval;
 410                 // dprintk("%s: set symcalc %u\n", __FUNCTION__, symcalc);
 411                 val[5] = (u8) (symcalc >> 12);
 412                 val[6] = (u8) (symcalc >> 4);
 413                 val[7] = (u8) (symcalc << 4);
 414         } else {
 415                 val[5] = (u8) (srate >> 16) & 0x7f;
 416                 val[6] = (u8) (srate >> 8);
 417                 val[7] = (u8) srate;
 418         }
 419         val[8] &= ~0x20;
 420         if (srate > 8000)
 421                 val[8] |= 0x20;
 422         return 0;
 423 }
 424
 425 static u8 dst_check_sum(u8 * buf, u32 len)
 426 {
 427         u32 i;
 428         u8 val = 0;
 429         if (!len)
 430                 return 0;
 431         for (i = 0; i < len; i++) {
 432                 val += buf[i];
 433         }
 434         return ((~val) + 1);
 435 }
 436
 437 struct dst_types {
 438         char *mstr;
 439         int offs;
 440         u8 dst_type;
 441         u32 type_flags;
 442 };
 443
 444 static struct dst_types dst_tlist[] = {
 445         {"DST-020", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_SYMDIV},
 446         {"DST-030", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_TS204 | DST_TYPE_HAS_NEWTUNE},
 447         {"DST-03T", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_SYMDIV | DST_TYPE_HAS_TS204},
 448         {"DST-MOT", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_SYMDIV},
 449         {"DST-CI",  1, DST_TYPE_IS_SAT, DST_TYPE_HAS_TS204 | DST_TYPE_HAS_NEWTUNE},
 450         {"DSTMCI",  1, DST_TYPE_IS_SAT, DST_TYPE_HAS_NEWTUNE},
 451         {"DSTFCI",  1, DST_TYPE_IS_SAT, DST_TYPE_HAS_NEWTUNE},
 452         {"DCTNEW",  1, DST_TYPE_IS_CABLE, DST_TYPE_HAS_NEWTUNE},
 453         {"DCT-CI",  1, DST_TYPE_IS_CABLE, DST_TYPE_HAS_NEWTUNE | DST_TYPE_HAS_TS204},
 454         {"DTTDIG",  1, DST_TYPE_IS_TERR, 0}
 455 };
 456
 457 /* DCTNEW and DCT-CI are guesses */
 458
 459 static void dst_type_flags_print(u32 type_flags)
 460 {
 461         printk("DST type flags :");
 462         if (type_flags & DST_TYPE_HAS_NEWTUNE)
 463                 printk(" 0x%x newtuner", DST_TYPE_HAS_NEWTUNE);
 464         if (type_flags & DST_TYPE_HAS_TS204)
 465                 printk(" 0x%x ts204", DST_TYPE_HAS_TS204);
 466         if (type_flags & DST_TYPE_HAS_SYMDIV)
 467                 printk(" 0x%x symdiv", DST_TYPE_HAS_SYMDIV);
 468         printk("\n");
 469 }
 470
 471 static int dst_type_print(u8 type)
 472 {
 473         char *otype;
 474         switch (type) {
 475         case DST_TYPE_IS_SAT:
 476                 otype = "satellite";
 477                 break;
 478         case DST_TYPE_IS_TERR:
 479                 otype = "terrestrial";
 480                 break;
 481         case DST_TYPE_IS_CABLE:
 482                 otype = "cable";
 483                 break;
 484         default:
 485                 printk("%s: invalid dst type %d\n", __FUNCTION__, type);
 486                 return -EINVAL;
 487         }
 488         printk("DST type : %s\n", otype);
 489         return 0;
 490 }
 491
 492 static int dst_check_ci(struct dst_state *state)
 493 {
 494         u8 txbuf[8];
 495         u8 rxbuf[8];
 496         int retval;
 497         int i;
 498         struct dst_types *dsp;
 499         u8 use_dst_type;
 500         u32 use_type_flags;
 501
 502         memset(txbuf, 0, sizeof(txbuf));
 503         txbuf[1] = 6;
 504         txbuf[7] = dst_check_sum(txbuf, 7);
 505
 506         dst_i2c_enable(state);
 507         dst_reset8820(state);
 508         retval = write_dst(state, txbuf, 8);
 509         if (retval < 0) {
 510                 dst_i2c_disable(state);
 511                 dprintk("%s: write not successful, maybe no card?\n", __FUNCTION__);
 512                 return retval;
 513         }
 514         msleep(3);
 515         retval = read_dst(state, rxbuf, 1);
 516         dst_i2c_disable(state);
 517         if (retval < 0) {
 518                 dprintk("%s: read not successful, maybe no card?\n", __FUNCTION__);
 519                 return retval;
 520         }
 521         if (rxbuf[0] != 0xff) {
 522                 dprintk("%s: write reply not 0xff, not ci (%02x)\n", __FUNCTION__, rxbuf[0]);
 523                 return retval;
 524         }
 525         if (!dst_wait_dst_ready(state))
 526                 return 0;
 527         // dst_i2c_enable(i2c); Dimitri
 528         retval = read_dst(state, rxbuf, 8);
 529         dst_i2c_disable(state);
 530         if (retval < 0) {
 531                 dprintk("%s: read not successful\n", __FUNCTION__);
 532                 return retval;
 533         }
 534         if (rxbuf[7] != dst_check_sum(rxbuf, 7)) {
 535                 dprintk("%s: checksum failure\n", __FUNCTION__);
 536                 return retval;
 537         }
 538         rxbuf[7] = '\0';
 539         for (i = 0, dsp = &dst_tlist[0]; i < sizeof(dst_tlist) / sizeof(dst_tlist[0]); i++, dsp++) {
 540                 if (!strncmp(&rxbuf[dsp->offs], dsp->mstr, strlen(dsp->mstr))) {
 541                         use_type_flags = dsp->type_flags;
 542                         use_dst_type = dsp->dst_type;
 543                         printk("%s: recognize %s\n", __FUNCTION__, dsp->mstr);
 544                         break;
 545                 }
 546         }
 547         if (i >= sizeof(dst_tlist) / sizeof(dst_tlist[0])) {
 548                 printk("%s: unable to recognize %s or %s\n", __FUNCTION__, &rxbuf[0], &rxbuf[1]);
 549                 printk("%s please email linux-dvb@linuxtv.org with this type in\n", __FUNCTION__);
 550                 use_dst_type = DST_TYPE_IS_SAT;
 551                 use_type_flags = DST_TYPE_HAS_SYMDIV;
 552         }
 553         dst_type_print(use_dst_type);
 554
 555         state->type_flags = use_type_flags;
 556         state->dst_type = use_dst_type;
 557         dst_type_flags_print(state->type_flags);
 558
 559         if (state->type_flags & DST_TYPE_HAS_TS204) {
 560                 dst_packsize(state, 204);
 561         }
 562         return 0;
 563 }
 564
 565 static int dst_command(struct dst_state* state, u8 * data, u8 len)
 566 {
 567         int retval;
 568         u8 reply;
 569
 570         dst_i2c_enable(state);
 571         dst_reset8820(state);
 572         retval = write_dst(state, data, len);
 573         if (retval < 0) {
 574                 dst_i2c_disable(state);
 575                 dprintk("%s: write not successful\n", __FUNCTION__);
 576                 return retval;
 577         }
 578         msleep(33);
 579         retval = read_dst(state, &reply, 1);
 580         dst_i2c_disable(state);
 581         if (retval < 0) {
 582                 dprintk("%s: read verify  not successful\n", __FUNCTION__);
 583                 return retval;
 584         }
 585         if (reply != 0xff) {
 586                 dprintk("%s: write reply not 0xff 0x%02x \n", __FUNCTION__, reply);
 587                 return 0;
 588         }
 589         if (len >= 2 && data[0] == 0 && (data[1] == 1 || data[1] == 3))
 590                 return 0;
 591         if (!dst_wait_dst_ready(state))
 592                 return 0;
 593         // dst_i2c_enable(i2c); Per dimitri
 594         retval = read_dst(state, state->rxbuffer, 8);
 595         dst_i2c_disable(state);
 596         if (retval < 0) {
 597                 dprintk("%s: read not successful\n", __FUNCTION__);
 598                 return 0;
 599         }
 600         if (state->rxbuffer[7] != dst_check_sum(state->rxbuffer, 7)) {
 601                 dprintk("%s: checksum failure\n", __FUNCTION__);
 602                 return 0;
 603         }
 604         return 0;
 605 }
 606
 607 static int dst_get_signal(struct dst_state* state)
 608 {
 609         int retval;
 610         u8 get_signal[] = { 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfb };
 611
 612         if ((state->diseq_flags & ATTEMPT_TUNE) == 0) {
 613                 state->decode_lock = state->decode_strength = state->decode_snr = 0;
 614                 return 0;
 615         }
 616         if (0 == (state->diseq_flags & HAS_LOCK)) {
 617                 state->decode_lock = state->decode_strength = state->decode_snr = 0;
 618                 return 0;
 619         }
 620         if (time_after_eq(jiffies, state->cur_jiff + (HZ / 5))) {
 621                 retval = dst_command(state, get_signal, 8);
 622                 if (retval < 0)
 623                         return retval;
 624                 if (state->dst_type == DST_TYPE_IS_SAT) {
 625                         state->decode_lock = ((state->rxbuffer[6] & 0x10) == 0) ? 1 : 0;
 626                         state->decode_strength = state->rxbuffer[5] << 8;
 627                         state->decode_snr = state->rxbuffer[2] << 8 | state->rxbuffer[3];
 628                 } else if ((state->dst_type == DST_TYPE_IS_TERR) || (state->dst_type == DST_TYPE_IS_CABLE)) {
 629                         state->decode_lock = (state->rxbuffer[1]) ? 1 : 0;
 630                         state->decode_strength = state->rxbuffer[4] << 8;
 631                         state->decode_snr = state->rxbuffer[3] << 8;
 632                 }
 633                 state->cur_jiff = jiffies;
 634         }
 635         return 0;
 636 }
 637
 638 static int dst_tone_power_cmd(struct dst_state* state)
 639 {
 640         u8 paket[8] = { 0x00, 0x09, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00 };
 641
 642         if (state->dst_type == DST_TYPE_IS_TERR)
 643                 return 0;
 644
 645         if (state->voltage == SEC_VOLTAGE_OFF)
 646                 paket[4] = 0;
 647         else
 648                 paket[4] = 1;
 649         if (state->tone == SEC_TONE_ON)
 650                 paket[2] = state->k22;
 651         else
 652                 paket[2] = 0;
 653         paket[7] = dst_check_sum(&paket[0], 7);
 654         dst_command(state, paket, 8);
 655         return 0;
 656 }
 657
 658 static int dst_get_tuna(struct dst_state* state)
 659 {
 660         int retval;
 661         if ((state->diseq_flags & ATTEMPT_TUNE) == 0)
 662                 return 0;
 663         state->diseq_flags &= ~(HAS_LOCK);
 664         if (!dst_wait_dst_ready(state))
 665                 return 0;
 666         if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
 667                 /* how to get variable length reply ???? */
 668                 retval = read_dst(state, state->rx_tuna, 10);
 669         } else {
 670                 retval = read_dst(state, &state->rx_tuna[2], 8);
 671         }
 672         if (retval < 0) {
 673                 dprintk("%s: read not successful\n", __FUNCTION__);
 674                 return 0;
 675         }
 676         if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
 677                 if (state->rx_tuna[9] != dst_check_sum(&state->rx_tuna[0], 9)) {
 678                         dprintk("%s: checksum failure?\n", __FUNCTION__);
 679                         return 0;
 680                 }
 681         } else {
 682                 if (state->rx_tuna[9] != dst_check_sum(&state->rx_tuna[2], 7)) {
 683                         dprintk("%s: checksum failure?\n", __FUNCTION__);
 684                         return 0;
 685                 }
 686         }
 687         if (state->rx_tuna[2] == 0 && state->rx_tuna[3] == 0)
 688                 return 0;
 689         state->decode_freq = ((state->rx_tuna[2] & 0x7f) << 8) + state->rx_tuna[3];
 690
 691         state->decode_lock = 1;
 692         /*
 693            dst->decode_n1 = (dst->rx_tuna[4] << 8) +
 694            (dst->rx_tuna[5]);
 695
 696            dst->decode_n2 = (dst->rx_tuna[8] << 8) +
 697            (dst->rx_tuna[7]);
 698          */
 699         state->diseq_flags |= HAS_LOCK;
 700         /* dst->cur_jiff = jiffies; */
 701         return 1;
 702 }
 703
 704 static int dst_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
 705
 706 static int dst_write_tuna(struct dvb_frontend* fe)
 707 {
 708         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 709         int retval;
 710         u8 reply;
 711
 712         dprintk("%s: type_flags 0x%x \n", __FUNCTION__, state->type_flags);
 713         state->decode_freq = 0;
 714         state->decode_lock = state->decode_strength = state->decode_snr = 0;
 715         if (state->dst_type == DST_TYPE_IS_SAT) {
 716                 if (!(state->diseq_flags & HAS_POWER))
 717                         dst_set_voltage(fe, SEC_VOLTAGE_13);
 718         }
 719         state->diseq_flags &= ~(HAS_LOCK | ATTEMPT_TUNE);
 720         dst_i2c_enable(state);
 721         if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
 722                 dst_reset8820(state);
 723                 state->tx_tuna[9] = dst_check_sum(&state->tx_tuna[0], 9);
 724                 retval = write_dst(state, &state->tx_tuna[0], 10);
 725         } else {
 726                 state->tx_tuna[9] = dst_check_sum(&state->tx_tuna[2], 7);
 727                 retval = write_dst(state, &state->tx_tuna[2], 8);
 728         }
 729         if (retval < 0) {
 730                 dst_i2c_disable(state);
 731                 dprintk("%s: write not successful\n", __FUNCTION__);
 732                 return retval;
 733         }
 734         msleep(3);
 735         retval = read_dst(state, &reply, 1);
 736         dst_i2c_disable(state);
 737         if (retval < 0) {
 738                 dprintk("%s: read verify  not successful\n", __FUNCTION__);
 739                 return retval;
 740         }
 741         if (reply != 0xff) {
 742                 dprintk("%s: write reply not 0xff 0x%02x \n", __FUNCTION__, reply);
 743                 return 0;
 744         }
 745         state->diseq_flags |= ATTEMPT_TUNE;
 746         return dst_get_tuna(state);
 747 }
 748
 749 /*
 750  * line22k0    0x00, 0x09, 0x00, 0xff, 0x01, 0x00, 0x00, 0x00
 751  * line22k1    0x00, 0x09, 0x01, 0xff, 0x01, 0x00, 0x00, 0x00
 752  * line22k2    0x00, 0x09, 0x02, 0xff, 0x01, 0x00, 0x00, 0x00
 753  * tone        0x00, 0x09, 0xff, 0x00, 0x01, 0x00, 0x00, 0x00
 754  * data        0x00, 0x09, 0xff, 0x01, 0x01, 0x00, 0x00, 0x00
 755  * power_off   0x00, 0x09, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00
 756  * power_on    0x00, 0x09, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00
 757  * Diseqc 1    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf0, 0xec
 758  * Diseqc 2    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf4, 0xe8
 759  * Diseqc 3    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf8, 0xe4
 760  * Diseqc 4    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xfc, 0xe0
 761  */
 762
 763 static int dst_set_diseqc(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
 764 {
 765         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 766         u8 paket[8] = { 0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf0, 0xec };
 767
 768         if (state->dst_type == DST_TYPE_IS_TERR)
 769                 return 0;
 770
 771         if (cmd->msg_len == 0 || cmd->msg_len > 4)
 772                 return -EINVAL;
 773         memcpy(&paket[3], cmd->msg, cmd->msg_len);
 774         paket[7] = dst_check_sum(&paket[0], 7);
 775         dst_command(state, paket, 8);
 776         return 0;
 777 }
 778
 779 static int dst_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
 780 {
 781         u8 *val;
 782         int need_cmd;
 783         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 784
 785         state->voltage = voltage;
 786
 787         if (state->dst_type == DST_TYPE_IS_TERR)
 788                 return 0;
 789
 790         need_cmd = 0;
 791         val = &state->tx_tuna[0];
 792         val[8] &= ~0x40;
 793         switch (voltage) {
 794         case SEC_VOLTAGE_13:
 795                 if ((state->diseq_flags & HAS_POWER) == 0)
 796                         need_cmd = 1;
 797                 state->diseq_flags |= HAS_POWER;
 798                 break;
 799         case SEC_VOLTAGE_18:
 800                 if ((state->diseq_flags & HAS_POWER) == 0)
 801                         need_cmd = 1;
 802                 state->diseq_flags |= HAS_POWER;
 803                 val[8] |= 0x40;
 804                 break;
 805         case SEC_VOLTAGE_OFF:
 806                 need_cmd = 1;
 807                 state->diseq_flags &= ~(HAS_POWER | HAS_LOCK | ATTEMPT_TUNE);
 808                 break;
 809         default:
 810                 return -EINVAL;
 811         }
 812         if (need_cmd) {
 813                 dst_tone_power_cmd(state);
 814         }
 815         return 0;
 816 }
 817
 818 static int dst_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
 819 {
 820         u8 *val;
 821         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 822
 823         state->tone = tone;
 824
 825         if (state->dst_type == DST_TYPE_IS_TERR)
 826                 return 0;
 827
 828         val = &state->tx_tuna[0];
 829
 830         val[8] &= ~0x1;
 831
 832         switch (tone) {
 833         case SEC_TONE_OFF:
 834                 break;
 835         case SEC_TONE_ON:
 836                 val[8] |= 1;
 837                 break;
 838         default:
 839                 return -EINVAL;
 840         }
 841         dst_tone_power_cmd(state);
 842         return 0;
 843 }
 844
 845 static int dst_init(struct dvb_frontend* fe)
 846 {
 847         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 848         static u8 ini_satci_tuna[] = { 9, 0, 3, 0xb6, 1, 0, 0x73, 0x21, 0, 0 };
 849         static u8 ini_satfta_tuna[] = { 0, 0, 3, 0xb6, 1, 0x55, 0xbd, 0x50, 0, 0 };
 850         static u8 ini_tvfta_tuna[] = { 0, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
 851         static u8 ini_tvci_tuna[] = { 9, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
 852         static u8 ini_cabfta_tuna[] = { 0, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
 853         static u8 ini_cabci_tuna[] = { 9, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
 854         state->inversion = INVERSION_ON;
 855         state->voltage = SEC_VOLTAGE_13;
 856         state->tone = SEC_TONE_OFF;
 857         state->symbol_rate = 29473000;
 858         state->fec = FEC_AUTO;
 859         state->diseq_flags = 0;
 860         state->k22 = 0x02;
 861         state->bandwidth = BANDWIDTH_7_MHZ;
 862         state->cur_jiff = jiffies;
 863         if (state->dst_type == DST_TYPE_IS_SAT) {
 864                 state->frequency = 950000;
 865                 memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? ini_satci_tuna : ini_satfta_tuna), sizeof(ini_satfta_tuna));
 866         } else if (state->dst_type == DST_TYPE_IS_TERR) {
 867                 state->frequency = 137000000;
 868                 memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? ini_tvci_tuna : ini_tvfta_tuna), sizeof(ini_tvfta_tuna));
 869         } else if (state->dst_type == DST_TYPE_IS_CABLE) {
 870                 state->frequency = 51000000;
 871                 memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? ini_cabci_tuna : ini_cabfta_tuna), sizeof(ini_cabfta_tuna));
 872         }
 873
 874         return 0;
 875 }
 876
 877 static int dst_read_status(struct dvb_frontend* fe, fe_status_t* status)
 878 {
 879         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 880
 881         *status = 0;
 882         if (state->diseq_flags & HAS_LOCK) {
 883                 dst_get_signal(state);
 884                 if (state->decode_lock)
 885                         *status |= FE_HAS_LOCK | FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC | FE_HAS_VITERBI;
 886         }
 887
 888         return 0;
 889 }
 890
 891 static int dst_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 892 {
 893         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 894
 895         dst_get_signal(state);
 896         *strength = state->decode_strength;
 897
 898         return 0;
 899 }
 900
 901 static int dst_read_snr(struct dvb_frontend* fe, u16* snr)
 902 {
 903         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 904
 905         dst_get_signal(state);
 906         *snr = state->decode_snr;
 907
 908         return 0;
 909 }
 910
 911 static int dst_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
 912 {
 913         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 914
 915         dst_set_freq(state, p->frequency);
 916         dst_set_inversion(state, p->inversion);
 917         if (state->dst_type == DST_TYPE_IS_SAT) {
 918                 dst_set_fec(state, p->u.qpsk.fec_inner);
 919                 dst_set_symbolrate(state, p->u.qpsk.symbol_rate);
 920         } else if (state->dst_type == DST_TYPE_IS_TERR) {
 921                 dst_set_bandwidth(state, p->u.ofdm.bandwidth);
 922         } else if (state->dst_type == DST_TYPE_IS_CABLE) {
 923                 dst_set_fec(state, p->u.qam.fec_inner);
 924                 dst_set_symbolrate(state, p->u.qam.symbol_rate);
 925         }
 926         dst_write_tuna(fe);
 927
 928         return 0;
 929 }
 930
 931 static int dst_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
 932 {
 933         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 934
 935         p->frequency = state->decode_freq;
 936         p->inversion = state->inversion;
 937         if (state->dst_type == DST_TYPE_IS_SAT) {
 938                 p->u.qpsk.symbol_rate = state->symbol_rate;
 939                 p->u.qpsk.fec_inner = dst_get_fec(state);
 940         } else if (state->dst_type == DST_TYPE_IS_TERR) {
 941                 p->u.ofdm.bandwidth = state->bandwidth;
 942         } else if (state->dst_type == DST_TYPE_IS_CABLE) {
 943                 p->u.qam.symbol_rate = state->symbol_rate;
 944                 p->u.qam.fec_inner = dst_get_fec(state);
 945                 p->u.qam.modulation = QAM_AUTO;
 946         }
 947
 948         return 0;
 949 }
 950
 951 static void dst_release(struct dvb_frontend* fe)
 952 {
 953         struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
 954         kfree(state);
 955 }
 956
 957 static struct dvb_frontend_ops dst_dvbt_ops;
 958 static struct dvb_frontend_ops dst_dvbs_ops;
 959 static struct dvb_frontend_ops dst_dvbc_ops;
 960
 961 struct dvb_frontend* dst_attach(const struct dst_config* config,
 962                                 struct i2c_adapter* i2c,
 963                                 struct bt878 *bt)
 964 {
 965         struct dst_state* state = NULL;
 966
 967         /* allocate memory for the internal state */
 968         state = (struct dst_state*) kmalloc(sizeof(struct dst_state), GFP_KERNEL);
 969         if (state == NULL) goto error;
 970
 971         /* setup the state */
 972         state->config = config;
 973         state->i2c = i2c;
 974         state->bt = bt;
 975
 976         /* check if the demod is there */
 977         if (dst_check_ci(state) < 0) goto error;
 978
 979         /* determine settings based on type */
 980         switch (state->dst_type) {
 981         case DST_TYPE_IS_TERR:
 982                 memcpy(&state->ops, &dst_dvbt_ops, sizeof(struct dvb_frontend_ops));
 983                 break;
 984         case DST_TYPE_IS_CABLE:
 985                 memcpy(&state->ops, &dst_dvbc_ops, sizeof(struct dvb_frontend_ops));
 986                 break;
 987         case DST_TYPE_IS_SAT:
 988                 memcpy(&state->ops, &dst_dvbs_ops, sizeof(struct dvb_frontend_ops));
 989                 break;
 990         default:
 991                 printk("dst: unknown frontend type. please report to the LinuxTV.org DVB mailinglist.\n");
 992                 goto error;
 993         }
 994
 995         /* create dvb_frontend */
 996         state->frontend.ops = &state->ops;
 997         state->frontend.demodulator_priv = state;
 998         return &state->frontend;
 999
1000 error:
1001         kfree(state);
1002         return NULL;
1003 }
1004
1005 static struct dvb_frontend_ops dst_dvbt_ops = {
1006
1007         .info = {
1008                 .name = "DST DVB-T",
1009                 .type = FE_OFDM,
1010                 .frequency_min = 137000000,
1011                 .frequency_max = 858000000,
1012                 .frequency_stepsize = 166667,
1013                 .caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO
1014         },
1015
1016         .release = dst_release,
1017
1018         .init = dst_init,
1019
1020         .set_frontend = dst_set_frontend,
1021         .get_frontend = dst_get_frontend,
1022
1023         .read_status = dst_read_status,
1024         .read_signal_strength = dst_read_signal_strength,
1025         .read_snr = dst_read_snr,
1026 };
1027
1028 static struct dvb_frontend_ops dst_dvbs_ops = {
1029
1030         .info = {
1031                 .name = "DST DVB-S",
1032                 .type = FE_QPSK,
1033                 .frequency_min = 950000,
1034                 .frequency_max = 2150000,
1035                 .frequency_stepsize = 1000,     /* kHz for QPSK frontends */
1036                 .frequency_tolerance = 29500,
1037                 .symbol_rate_min = 1000000,
1038                 .symbol_rate_max = 45000000,
1039         /*     . symbol_rate_tolerance  =       ???,*/
1040                 .caps = FE_CAN_FEC_AUTO | FE_CAN_QPSK
1041         },
1042
1043         .release = dst_release,
1044
1045         .init = dst_init,
1046
1047         .set_frontend = dst_set_frontend,
1048         .get_frontend = dst_get_frontend,
1049
1050         .read_status = dst_read_status,
1051         .read_signal_strength = dst_read_signal_strength,
1052         .read_snr = dst_read_snr,
1053
1054         .diseqc_send_master_cmd = dst_set_diseqc,
1055         .set_voltage = dst_set_voltage,
1056         .set_tone = dst_set_tone,
1057 };
1058
1059 static struct dvb_frontend_ops dst_dvbc_ops = {
1060
1061         .info = {
1062                 .name = "DST DVB-C",
1063                 .type = FE_QAM,
1064                 .frequency_stepsize = 62500,
1065                 .frequency_min = 51000000,
1066                 .frequency_max = 858000000,
1067                 .symbol_rate_min = 1000000,
1068                 .symbol_rate_max = 45000000,
1069         /*     . symbol_rate_tolerance  =       ???,*/
1070                 .caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO
1071         },
1072
1073         .release = dst_release,
1074
1075         .init = dst_init,
1076
1077         .set_frontend = dst_set_frontend,
1078         .get_frontend = dst_get_frontend,
1079
1080         .read_status = dst_read_status,
1081         .read_signal_strength = dst_read_signal_strength,
1082         .read_snr = dst_read_snr,
1083 };
1084
1085 MODULE_DESCRIPTION("DST DVB-S/T/C Combo Frontend driver");
1086 MODULE_AUTHOR("Jamie Honan");
1087 MODULE_LICENSE("GPL");
1088
1089 EXPORT_SYMBOL(dst_attach);