drivers/media/dvb/frontends/or51132.c

   1 /*
   2  *    Support for OR51132 (pcHDTV HD-3000) - VSB/QAM
   3  *
   4  *    Copyright (C) 2005 Kirk Lapray <kirk_lapray@bigfoot.com>
   5  *
   6  *    Based on code from Jack Kelliher (kelliher@xmission.com)
   7  *                           Copyright (C) 2002 & pcHDTV, inc.
   8  *
   9  *    This program is free software; you can redistribute it and/or modify
  10  *    it under the terms of the GNU General Public License as published by
  11  *    the Free Software Foundation; either version 2 of the License, or
  12  *    (at your option) any later version.
  13  *
  14  *    This program is distributed in the hope that it will be useful,
  15  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *    GNU General Public License for more details.
  18  *
  19  *    You should have received a copy of the GNU General Public License
  20  *    along with this program; if not, write to the Free Software
  21  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23 */
  24
  25 /*
  26  * This driver needs two external firmware files. Please copy
  27  * "dvb-fe-or51132-vsb.fw" and "dvb-fe-or51132-qam.fw" to
  28  * /usr/lib/hotplug/firmware/ or /lib/firmware/
  29  * (depending on configuration of firmware hotplug).
  30  */
  31 #define OR51132_VSB_FIRMWARE "dvb-fe-or51132-vsb.fw"
  32 #define OR51132_QAM_FIRMWARE "dvb-fe-or51132-qam.fw"
  33
  34 #include <linux/kernel.h>
  35 #include <linux/module.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/init.h>
  38 #include <linux/delay.h>
  39 #include <linux/string.h>
  40 #include <linux/slab.h>
  41 #include <asm/byteorder.h>
  42
  43 #include "dvb_math.h"
  44 #include "dvb_frontend.h"
  45 #include "dvb-pll.h"
  46 #include "or51132.h"
  47
  48 static int debug;
  49 #define dprintk(args...) \
  50         do { \
  51                 if (debug) printk(KERN_DEBUG "or51132: " args); \
  52         } while (0)
  53
  54
  55 struct or51132_state
  56 {
  57         struct i2c_adapter* i2c;
  58
  59         /* Configuration settings */
  60         const struct or51132_config* config;
  61
  62         struct dvb_frontend frontend;
  63
  64         /* Demodulator private data */
  65         fe_modulation_t current_modulation;
  66         u32 snr; /* Result of last SNR calculation */
  67
  68         /* Tuner private data */
  69         u32 current_frequency;
  70 };
  71
  72 static int i2c_writebytes (struct or51132_state* state, u8 reg, u8 *buf, int len)
  73 {
  74         int err;
  75         struct i2c_msg msg;
  76         msg.addr  = reg;
  77         msg.flags = 0;
  78         msg.len   = len;
  79         msg.buf   = buf;
  80
  81         if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
  82                 printk(KERN_WARNING "or51132: i2c_writebytes error (addr %02x, err == %i)\n", reg, err);
  83                 return -EREMOTEIO;
  84         }
  85
  86         return 0;
  87 }
  88
  89 static u8 i2c_readbytes (struct or51132_state* state, u8 reg, u8* buf, int len)
  90 {
  91         int err;
  92         struct i2c_msg msg;
  93         msg.addr   = reg;
  94         msg.flags = I2C_M_RD;
  95         msg.len = len;
  96         msg.buf = buf;
  97
  98         if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
  99                 printk(KERN_WARNING "or51132: i2c_readbytes error (addr %02x, err == %i)\n", reg, err);
 100                 return -EREMOTEIO;
 101         }
 102
 103         return 0;
 104 }
 105
 106 static int or51132_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
 107 {
 108         struct or51132_state* state = fe->demodulator_priv;
 109         static u8 run_buf[] = {0x7F,0x01};
 110         u8 rec_buf[8];
 111         u8 cmd_buf[3];
 112         u32 firmwareAsize, firmwareBsize;
 113         int i,ret;
 114
 115         dprintk("Firmware is %Zd bytes\n",fw->size);
 116
 117         /* Get size of firmware A and B */
 118         firmwareAsize = le32_to_cpu(*((u32*)fw->data));
 119         dprintk("FirmwareA is %i bytes\n",firmwareAsize);
 120         firmwareBsize = le32_to_cpu(*((u32*)(fw->data+4)));
 121         dprintk("FirmwareB is %i bytes\n",firmwareBsize);
 122
 123         /* Upload firmware */
 124         if ((ret = i2c_writebytes(state,state->config->demod_address,
 125                                  &fw->data[8],firmwareAsize))) {
 126                 printk(KERN_WARNING "or51132: load_firmware error 1\n");
 127                 return ret;
 128         }
 129         msleep(1); /* 1ms */
 130         if ((ret = i2c_writebytes(state,state->config->demod_address,
 131                                  &fw->data[8+firmwareAsize],firmwareBsize))) {
 132                 printk(KERN_WARNING "or51132: load_firmware error 2\n");
 133                 return ret;
 134         }
 135         msleep(1); /* 1ms */
 136
 137         if ((ret = i2c_writebytes(state,state->config->demod_address,
 138                                  run_buf,2))) {
 139                 printk(KERN_WARNING "or51132: load_firmware error 3\n");
 140                 return ret;
 141         }
 142
 143         /* Wait at least 5 msec */
 144         msleep(20); /* 10ms */
 145
 146         if ((ret = i2c_writebytes(state,state->config->demod_address,
 147                                  run_buf,2))) {
 148                 printk(KERN_WARNING "or51132: load_firmware error 4\n");
 149                 return ret;
 150         }
 151
 152         /* 50ms for operation to begin */
 153         msleep(50);
 154
 155         /* Read back ucode version to besure we loaded correctly and are really up and running */
 156         /* Get uCode version */
 157         cmd_buf[0] = 0x10;
 158         cmd_buf[1] = 0x10;
 159         cmd_buf[2] = 0x00;
 160         msleep(20); /* 20ms */
 161         if ((ret = i2c_writebytes(state,state->config->demod_address,
 162                                  cmd_buf,3))) {
 163                 printk(KERN_WARNING "or51132: load_firmware error a\n");
 164                 return ret;
 165         }
 166
 167         cmd_buf[0] = 0x04;
 168         cmd_buf[1] = 0x17;
 169         msleep(20); /* 20ms */
 170         if ((ret = i2c_writebytes(state,state->config->demod_address,
 171                                  cmd_buf,2))) {
 172                 printk(KERN_WARNING "or51132: load_firmware error b\n");
 173                 return ret;
 174         }
 175
 176         cmd_buf[0] = 0x00;
 177         cmd_buf[1] = 0x00;
 178         msleep(20); /* 20ms */
 179         if ((ret = i2c_writebytes(state,state->config->demod_address,
 180                                  cmd_buf,2))) {
 181                 printk(KERN_WARNING "or51132: load_firmware error c\n");
 182                 return ret;
 183         }
 184
 185         for(i=0;i<4;i++) {
 186                 msleep(20); /* 20ms */
 187                 /* Once upon a time, this command might have had something
 188                    to do with getting the firmware version, but it's
 189                    not used anymore:
 190                    {0x04,0x00,0x30,0x00,i+1} */
 191                 /* Read 8 bytes, two bytes at a time */
 192                 if ((ret = i2c_readbytes(state,state->config->demod_address,
 193                                         &rec_buf[i*2],2))) {
 194                         printk(KERN_WARNING
 195                                "or51132: load_firmware error d - %d\n",i);
 196                         return ret;
 197                 }
 198         }
 199
 200         printk(KERN_WARNING
 201                "or51132: Version: %02X%02X%02X%02X-%02X%02X%02X%02X (%02X%01X-%01X-%02X%01X-%01X)\n",
 202                rec_buf[1],rec_buf[0],rec_buf[3],rec_buf[2],
 203                rec_buf[5],rec_buf[4],rec_buf[7],rec_buf[6],
 204                rec_buf[3],rec_buf[2]>>4,rec_buf[2]&0x0f,
 205                rec_buf[5],rec_buf[4]>>4,rec_buf[4]&0x0f);
 206
 207         cmd_buf[0] = 0x10;
 208         cmd_buf[1] = 0x00;
 209         cmd_buf[2] = 0x00;
 210         msleep(20); /* 20ms */
 211         if ((ret = i2c_writebytes(state,state->config->demod_address,
 212                                  cmd_buf,3))) {
 213                 printk(KERN_WARNING "or51132: load_firmware error e\n");
 214                 return ret;
 215         }
 216         return 0;
 217 };
 218
 219 static int or51132_init(struct dvb_frontend* fe)
 220 {
 221         return 0;
 222 }
 223
 224 static int or51132_read_ber(struct dvb_frontend* fe, u32* ber)
 225 {
 226         *ber = 0;
 227         return 0;
 228 }
 229
 230 static int or51132_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 231 {
 232         *ucblocks = 0;
 233         return 0;
 234 }
 235
 236 static int or51132_sleep(struct dvb_frontend* fe)
 237 {
 238         return 0;
 239 }
 240
 241 static int or51132_setmode(struct dvb_frontend* fe)
 242 {
 243         struct or51132_state* state = fe->demodulator_priv;
 244         unsigned char cmd_buf[3];
 245
 246         dprintk("setmode %d\n",(int)state->current_modulation);
 247         /* set operation mode in Receiver 1 register; */
 248         cmd_buf[0] = 0x04;
 249         cmd_buf[1] = 0x01;
 250         switch (state->current_modulation) {
 251         case QAM_256:
 252         case QAM_64:
 253         case QAM_AUTO:
 254                 /* Auto-deinterleave; MPEG ser, MPEG2tr, phase noise-high*/
 255                 cmd_buf[2] = 0x5F;
 256                 break;
 257         case VSB_8:
 258                 /* Auto CH, Auto NTSC rej, MPEGser, MPEG2tr, phase noise-high*/
 259                 cmd_buf[2] = 0x50;
 260                 break;
 261         default:
 262                 printk("setmode:Modulation set to unsupported value\n");
 263         };
 264         if (i2c_writebytes(state,state->config->demod_address,
 265                            cmd_buf,3)) {
 266                 printk(KERN_WARNING "or51132: set_mode error 1\n");
 267                 return -1;
 268         }
 269         dprintk("or51132: set #1 to %02x\n", cmd_buf[2]);
 270
 271         /* Set operation mode in Receiver 6 register */
 272         cmd_buf[0] = 0x1C;
 273         switch (state->current_modulation) {
 274         case QAM_AUTO:
 275                 /* REC MODE Normal Carrier Lock */
 276                 cmd_buf[1] = 0x00;
 277                 /* Channel MODE Auto QAM64/256 */
 278                 cmd_buf[2] = 0x4f;
 279                 break;
 280         case QAM_256:
 281                 /* REC MODE Normal Carrier Lock */
 282                 cmd_buf[1] = 0x00;
 283                 /* Channel MODE QAM256 */
 284                 cmd_buf[2] = 0x45;
 285                 break;
 286         case QAM_64:
 287                 /* REC MODE Normal Carrier Lock */
 288                 cmd_buf[1] = 0x00;
 289                 /* Channel MODE QAM64 */
 290                 cmd_buf[2] = 0x43;
 291                 break;
 292         case VSB_8:
 293                  /* REC MODE inv IF spectrum, Normal */
 294                 cmd_buf[1] = 0x03;
 295                 /* Channel MODE ATSC/VSB8 */
 296                 cmd_buf[2] = 0x06;
 297                 break;
 298         default:
 299                 printk("setmode: Modulation set to unsupported value\n");
 300         };
 301         msleep(20); /* 20ms */
 302         if (i2c_writebytes(state,state->config->demod_address,
 303                            cmd_buf,3)) {
 304                 printk(KERN_WARNING "or51132: set_mode error 2\n");
 305                 return -1;
 306         }
 307         dprintk("or51132: set #6 to 0x%02x%02x\n", cmd_buf[1], cmd_buf[2]);
 308
 309         return 0;
 310 }
 311
 312 /* Some modulations use the same firmware.  This classifies modulations
 313    by the firmware they use. */
 314 #define MOD_FWCLASS_UNKNOWN     0
 315 #define MOD_FWCLASS_VSB         1
 316 #define MOD_FWCLASS_QAM         2
 317 static int modulation_fw_class(fe_modulation_t modulation)
 318 {
 319         switch(modulation) {
 320         case VSB_8:
 321                 return MOD_FWCLASS_VSB;
 322         case QAM_AUTO:
 323         case QAM_64:
 324         case QAM_256:
 325                 return MOD_FWCLASS_QAM;
 326         default:
 327                 return MOD_FWCLASS_UNKNOWN;
 328         }
 329 }
 330
 331 static int or51132_set_parameters(struct dvb_frontend* fe,
 332                                   struct dvb_frontend_parameters *param)
 333 {
 334         int ret;
 335         struct or51132_state* state = fe->demodulator_priv;
 336         const struct firmware *fw;
 337         const char *fwname;
 338         int clock_mode;
 339
 340         /* Upload new firmware only if we need a different one */
 341         if (modulation_fw_class(state->current_modulation) !=
 342             modulation_fw_class(param->u.vsb.modulation)) {
 343                 switch(modulation_fw_class(param->u.vsb.modulation)) {
 344                 case MOD_FWCLASS_VSB:
 345                         dprintk("set_parameters VSB MODE\n");
 346                         fwname = OR51132_VSB_FIRMWARE;
 347
 348                         /* Set non-punctured clock for VSB */
 349                         clock_mode = 0;
 350                         break;
 351                 case MOD_FWCLASS_QAM:
 352                         dprintk("set_parameters QAM MODE\n");
 353                         fwname = OR51132_QAM_FIRMWARE;
 354
 355                         /* Set punctured clock for QAM */
 356                         clock_mode = 1;
 357                         break;
 358                 default:
 359                         printk("or51132: Modulation type(%d) UNSUPPORTED\n",
 360                                param->u.vsb.modulation);
 361                         return -1;
 362                 }
 363                 printk("or51132: Waiting for firmware upload(%s)...\n",
 364                        fwname);
 365                 ret = request_firmware(&fw, fwname, &state->i2c->dev);
 366                 if (ret) {
 367                         printk(KERN_WARNING "or51132: No firmware up"
 368                                "loaded(timeout or file not found?)\n");
 369                         return ret;
 370                 }
 371                 ret = or51132_load_firmware(fe, fw);
 372                 release_firmware(fw);
 373                 if (ret) {
 374                         printk(KERN_WARNING "or51132: Writing firmware to "
 375                                "device failed!\n");
 376                         return ret;
 377                 }
 378                 printk("or51132: Firmware upload complete.\n");
 379                 state->config->set_ts_params(fe, clock_mode);
 380         }
 381         /* Change only if we are actually changing the modulation */
 382         if (state->current_modulation != param->u.vsb.modulation) {
 383                 state->current_modulation = param->u.vsb.modulation;
 384                 or51132_setmode(fe);
 385         }
 386
 387         if (fe->ops.tuner_ops.set_params) {
 388                 fe->ops.tuner_ops.set_params(fe, param);
 389                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 390         }
 391
 392         /* Set to current mode */
 393         or51132_setmode(fe);
 394
 395         /* Update current frequency */
 396         state->current_frequency = param->frequency;
 397         return 0;
 398 }
 399
 400 static int or51132_get_parameters(struct dvb_frontend* fe,
 401                                   struct dvb_frontend_parameters *param)
 402 {
 403         struct or51132_state* state = fe->demodulator_priv;
 404         u8 buf[2];
 405
 406         /* Receiver Status */
 407         buf[0]=0x04;
 408         buf[1]=0x00;
 409         msleep(30); /* 30ms */
 410         if (i2c_writebytes(state,state->config->demod_address,buf,2)) {
 411                 printk(KERN_WARNING "or51132: get_parameters write error\n");
 412                 return -EREMOTEIO;
 413         }
 414         msleep(30); /* 30ms */
 415         if (i2c_readbytes(state,state->config->demod_address,buf,2)) {
 416                 printk(KERN_WARNING "or51132: get_parameters read error\n");
 417                 return -EREMOTEIO;
 418         }
 419         switch(buf[0]) {
 420                 case 0x06: param->u.vsb.modulation = VSB_8; break;
 421                 case 0x43: param->u.vsb.modulation = QAM_64; break;
 422                 case 0x45: param->u.vsb.modulation = QAM_256; break;
 423                 default:
 424                         printk(KERN_WARNING "or51132: unknown status 0x%02x\n",
 425                                buf[0]);
 426                         return -EREMOTEIO;
 427         }
 428
 429         /* FIXME: Read frequency from frontend, take AFC into account */
 430         param->frequency = state->current_frequency;
 431
 432         /* FIXME: How to read inversion setting? Receiver 6 register? */
 433         param->inversion = INVERSION_AUTO;
 434
 435         return 0;
 436 }
 437
 438 static int or51132_read_status(struct dvb_frontend* fe, fe_status_t* status)
 439 {
 440         struct or51132_state* state = fe->demodulator_priv;
 441         unsigned char rec_buf[2];
 442         unsigned char snd_buf[2];
 443         *status = 0;
 444
 445         /* Receiver Status */
 446         snd_buf[0]=0x04;
 447         snd_buf[1]=0x00;
 448         msleep(30); /* 30ms */
 449         if (i2c_writebytes(state,state->config->demod_address,snd_buf,2)) {
 450                 printk(KERN_WARNING "or51132: read_status write error\n");
 451                 return -1;
 452         }
 453         msleep(30); /* 30ms */
 454         if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) {
 455                 printk(KERN_WARNING "or51132: read_status read error\n");
 456                 return -1;
 457         }
 458         dprintk("read_status %x %x\n",rec_buf[0],rec_buf[1]);
 459
 460         if (rec_buf[1] & 0x01) { /* Receiver Lock */
 461                 *status |= FE_HAS_SIGNAL;
 462                 *status |= FE_HAS_CARRIER;
 463                 *status |= FE_HAS_VITERBI;
 464                 *status |= FE_HAS_SYNC;
 465                 *status |= FE_HAS_LOCK;
 466         }
 467         return 0;
 468 }
 469
 470 /* Calculate SNR estimation (scaled by 2^24)
 471
 472    8-VSB SNR and QAM equations from Oren datasheets
 473
 474    For 8-VSB:
 475      SNR[dB] = 10 * log10(897152044.8282 / MSE^2 ) - K
 476
 477      Where K = 0 if NTSC rejection filter is OFF; and
 478            K = 3 if NTSC rejection filter is ON
 479
 480    For QAM64:
 481      SNR[dB] = 10 * log10(897152044.8282 / MSE^2 )
 482
 483    For QAM256:
 484      SNR[dB] = 10 * log10(907832426.314266  / MSE^2 )
 485
 486    We re-write the snr equation as:
 487      SNR * 2^24 = 10*(c - 2*intlog10(MSE))
 488    Where for QAM256, c = log10(907832426.314266) * 2^24
 489    and for 8-VSB and QAM64, c = log10(897152044.8282) * 2^24 */
 490
 491 static u32 calculate_snr(u32 mse, u32 c)
 492 {
 493         if (mse == 0) /* No signal */
 494                 return 0;
 495
 496         mse = 2*intlog10(mse);
 497         if (mse > c) {
 498                 /* Negative SNR, which is possible, but realisticly the
 499                 demod will lose lock before the signal gets this bad.  The
 500                 API only allows for unsigned values, so just return 0 */
 501                 return 0;
 502         }
 503         return 10*(c - mse);
 504 }
 505
 506 static int or51132_read_snr(struct dvb_frontend* fe, u16* snr)
 507 {
 508         struct or51132_state* state = fe->demodulator_priv;
 509         u8 rec_buf[2];
 510         u8 snd_buf[2];
 511         u32 noise;
 512         u32 c;
 513         u32 usK;
 514
 515         /* Register is same for VSB or QAM firmware */
 516         snd_buf[0]=0x04;
 517         snd_buf[1]=0x02; /* SNR after Equalizer */
 518         msleep(30); /* 30ms */
 519         if (i2c_writebytes(state,state->config->demod_address,snd_buf,2)) {
 520                 printk(KERN_WARNING "or51132: snr write error\n");
 521                 return -EREMOTEIO;
 522         }
 523         msleep(30); /* 30ms */
 524         if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) {
 525                 printk(KERN_WARNING "or51132: snr read error\n");
 526                 return -EREMOTEIO;
 527         }
 528         noise = rec_buf[0] | (rec_buf[1] << 8);
 529         dprintk("read_snr noise %x %x (%i)\n",rec_buf[0],rec_buf[1],noise);
 530
 531         /* Read status, contains modulation type for QAM_AUTO and
 532            NTSC filter for VSB */
 533         snd_buf[0]=0x04;
 534         snd_buf[1]=0x00; /* Status register */
 535         msleep(30); /* 30ms */
 536         if (i2c_writebytes(state,state->config->demod_address,snd_buf,2)) {
 537                 printk(KERN_WARNING "or51132: status write error\n");
 538                 return -EREMOTEIO;
 539         }
 540         msleep(30); /* 30ms */
 541         if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) {
 542                 printk(KERN_WARNING "or51132: status read error\n");
 543                 return -EREMOTEIO;
 544         }
 545
 546         usK = 0;
 547         switch (rec_buf[0]) {
 548         case 0x06:
 549                 usK = (rec_buf[1] & 0x10) ? 0x03000000 : 0;
 550                 /* Fall through to QAM64 case */
 551         case 0x43:
 552                 c = 150204167;
 553                 break;
 554         case 0x45:
 555                 c = 150290396;
 556                 break;
 557         default:
 558                 printk(KERN_ERR "or51132: unknown status 0x%02x\n", rec_buf[0]);
 559                 return -EREMOTEIO;
 560         }
 561         dprintk("%s: modulation %02x, NTSC rej O%s\n", __FUNCTION__,
 562                 rec_buf[0], rec_buf[1]&0x10?"n":"ff");
 563
 564         /* Calculate SNR using noise, c, and NTSC rejection correction */
 565         state->snr = calculate_snr(noise, c) - usK;
 566         *snr = (state->snr) >> 16;
 567
 568         dprintk("%s: noise = 0x%08x, snr = %d.%02d dB\n", __FUNCTION__, noise,
 569                 state->snr >> 24, (((state->snr>>8) & 0xffff) * 100) >> 16);
 570
 571         return 0;
 572 }
 573
 574 static int or51132_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 575 {
 576         /* Calculate Strength from SNR up to 35dB */
 577         /* Even though the SNR can go higher than 35dB, there is some comfort */
 578         /* factor in having a range of strong signals that can show at 100%   */
 579         struct or51132_state* state = (struct or51132_state*) fe->demodulator_priv;
 580         u16 snr;
 581         int ret;
 582
 583         ret = fe->ops.read_snr(fe, &snr);
 584         if (ret != 0)
 585                 return ret;
 586         /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */
 587         /* scale the range 0 - 35*2^24 into 0 - 65535 */
 588         if (state->snr >= 8960 * 0x10000)
 589                 *strength = 0xffff;
 590         else
 591                 *strength = state->snr / 8960;
 592
 593         return 0;
 594 }
 595
 596 static int or51132_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings)
 597 {
 598         fe_tune_settings->min_delay_ms = 500;
 599         fe_tune_settings->step_size = 0;
 600         fe_tune_settings->max_drift = 0;
 601
 602         return 0;
 603 }
 604
 605 static void or51132_release(struct dvb_frontend* fe)
 606 {
 607         struct or51132_state* state = fe->demodulator_priv;
 608         kfree(state);
 609 }
 610
 611 static struct dvb_frontend_ops or51132_ops;
 612
 613 struct dvb_frontend* or51132_attach(const struct or51132_config* config,
 614                                     struct i2c_adapter* i2c)
 615 {
 616         struct or51132_state* state = NULL;
 617
 618         /* Allocate memory for the internal state */
 619         state = kmalloc(sizeof(struct or51132_state), GFP_KERNEL);
 620         if (state == NULL)
 621                 goto error;
 622
 623         /* Setup the state */
 624         state->config = config;
 625         state->i2c = i2c;
 626         state->current_frequency = -1;
 627         state->current_modulation = -1;
 628
 629         /* Create dvb_frontend */
 630         memcpy(&state->frontend.ops, &or51132_ops, sizeof(struct dvb_frontend_ops));
 631         state->frontend.demodulator_priv = state;
 632         return &state->frontend;
 633
 634 error:
 635         kfree(state);
 636         return NULL;
 637 }
 638
 639 static struct dvb_frontend_ops or51132_ops = {
 640
 641         .info = {
 642                 .name                   = "Oren OR51132 VSB/QAM Frontend",
 643                 .type                   = FE_ATSC,
 644                 .frequency_min          = 44000000,
 645                 .frequency_max          = 958000000,
 646                 .frequency_stepsize     = 166666,
 647                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 648                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 649                         FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_QAM_AUTO |
 650                         FE_CAN_8VSB
 651         },
 652
 653         .release = or51132_release,
 654
 655         .init = or51132_init,
 656         .sleep = or51132_sleep,
 657
 658         .set_frontend = or51132_set_parameters,
 659         .get_frontend = or51132_get_parameters,
 660         .get_tune_settings = or51132_get_tune_settings,
 661
 662         .read_status = or51132_read_status,
 663         .read_ber = or51132_read_ber,
 664         .read_signal_strength = or51132_read_signal_strength,
 665         .read_snr = or51132_read_snr,
 666         .read_ucblocks = or51132_read_ucblocks,
 667 };
 668
 669 module_param(debug, int, 0644);
 670 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
 671
 672 MODULE_DESCRIPTION("OR51132 ATSC [pcHDTV HD-3000] (8VSB & ITU J83 AnnexB FEC QAM64/256) Demodulator Driver");
 673 MODULE_AUTHOR("Kirk Lapray");
 674 MODULE_LICENSE("GPL");
 675
 676 EXPORT_SYMBOL(or51132_attach);
 677
 678 /*
 679  * Local variables:
 680  * c-basic-offset: 8
 681  * End:
 682  */