drivers/media/dvb-frontends/bcm3510.c

   1 /*
   2  * Support for the Broadcom BCM3510 ATSC demodulator (1st generation Air2PC)
   3  *
   4  *  Copyright (C) 2001-5, B2C2 inc.
   5  *
   6  *  GPL/Linux driver written by Patrick Boettcher <patrick.boettcher@posteo.de>
   7  *
   8  *  This driver is "hard-coded" to be used with the 1st generation of
   9  *  Technisat/B2C2's Air2PC ATSC PCI/USB cards/boxes. The pll-programming
  10  *  (Panasonic CT10S) is located here, which is actually wrong. Unless there is
  11  *  another device with a BCM3510, this is no problem.
  12  *
  13  *  The driver works also with QAM64 DVB-C, but had an unreasonable high
  14  *  UNC. (Tested with the Air2PC ATSC 1st generation)
  15  *
  16  *  You'll need a firmware for this driver in order to get it running. It is
  17  *  called "dvb-fe-bcm3510-01.fw".
  18  *
  19  * This program is free software; you can redistribute it and/or modify it
  20  * under the terms of the GNU General Public License as published by the Free
  21  * Software Foundation; either version 2 of the License, or (at your option)
  22  * any later version.
  23  *
  24  * This program is distributed in the hope that it will be useful, but WITHOUT
  25  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  26  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  27  * more details.
  28  *
  29  * You should have received a copy of the GNU General Public License along with
  30  * this program; if not, write to the Free Software Foundation, Inc., 675 Mass
  31  * Ave, Cambridge, MA 02139, USA.
  32  */
  33
  34 #include <linux/init.h>
  35 #include <linux/module.h>
  36 #include <linux/device.h>
  37 #include <linux/firmware.h>
  38 #include <linux/jiffies.h>
  39 #include <linux/string.h>
  40 #include <linux/slab.h>
  41 #include <linux/mutex.h>
  42
  43 #include "dvb_frontend.h"
  44 #include "bcm3510.h"
  45 #include "bcm3510_priv.h"
  46
  47 /* Max transfer size done by bcm3510_do_hab_cmd() function */
  48 #define MAX_XFER_SIZE   128
  49
  50 struct bcm3510_state {
  51
  52         struct i2c_adapter* i2c;
  53         const struct bcm3510_config* config;
  54         struct dvb_frontend frontend;
  55
  56         /* demodulator private data */
  57         struct mutex hab_mutex;
  58         u8 firmware_loaded:1;
  59
  60         unsigned long next_status_check;
  61         unsigned long status_check_interval;
  62         struct bcm3510_hab_cmd_status1 status1;
  63         struct bcm3510_hab_cmd_status2 status2;
  64 };
  65
  66 static int debug;
  67 module_param(debug, int, 0644);
  68 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=i2c (|-able)).");
  69
  70 #define dprintk(level,x...) if (level & debug) printk(x)
  71 #define dbufout(b,l,m) {\
  72             int i; \
  73             for (i = 0; i < l; i++) \
  74                 m("%02x ",b[i]); \
  75 }
  76 #define deb_info(args...) dprintk(0x01,args)
  77 #define deb_i2c(args...)  dprintk(0x02,args)
  78 #define deb_hab(args...)  dprintk(0x04,args)
  79
  80 /* transfer functions */
  81 static int bcm3510_writebytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
  82 {
  83         u8 b[256];
  84         int err;
  85         struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = b, .len = len + 1 };
  86
  87         b[0] = reg;
  88         memcpy(&b[1],buf,len);
  89
  90         deb_i2c("i2c wr %02x: ",reg);
  91         dbufout(buf,len,deb_i2c);
  92         deb_i2c("\n");
  93
  94         if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
  95
  96                 deb_info("%s: i2c write error (addr %02x, reg %02x, err == %i)\n",
  97                         __func__, state->config->demod_address, reg,  err);
  98                 return -EREMOTEIO;
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int bcm3510_readbytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
 105 {
 106         struct i2c_msg msg[] = {
 107                 { .addr = state->config->demod_address, .flags = 0,        .buf = &reg, .len = 1 },
 108                 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = buf,  .len = len }
 109         };
 110         int err;
 111
 112         memset(buf,0,len);
 113
 114         if ((err = i2c_transfer (state->i2c, msg, 2)) != 2) {
 115                 deb_info("%s: i2c read error (addr %02x, reg %02x, err == %i)\n",
 116                         __func__, state->config->demod_address, reg,  err);
 117                 return -EREMOTEIO;
 118         }
 119         deb_i2c("i2c rd %02x: ",reg);
 120         dbufout(buf,len,deb_i2c);
 121         deb_i2c("\n");
 122
 123         return 0;
 124 }
 125
 126 static int bcm3510_writeB(struct bcm3510_state *state, u8 reg, bcm3510_register_value v)
 127 {
 128         return bcm3510_writebytes(state,reg,&v.raw,1);
 129 }
 130
 131 static int bcm3510_readB(struct bcm3510_state *state, u8 reg, bcm3510_register_value *v)
 132 {
 133         return bcm3510_readbytes(state,reg,&v->raw,1);
 134 }
 135
 136 /* Host Access Buffer transfers */
 137 static int bcm3510_hab_get_response(struct bcm3510_state *st, u8 *buf, int len)
 138 {
 139         bcm3510_register_value v;
 140         int ret,i;
 141
 142         v.HABADR_a6.HABADR = 0;
 143         if ((ret = bcm3510_writeB(st,0xa6,v)) < 0)
 144                 return ret;
 145
 146         for (i = 0; i < len; i++) {
 147                 if ((ret = bcm3510_readB(st,0xa7,&v)) < 0)
 148                         return ret;
 149                 buf[i] = v.HABDATA_a7;
 150         }
 151         return 0;
 152 }
 153
 154 static int bcm3510_hab_send_request(struct bcm3510_state *st, u8 *buf, int len)
 155 {
 156         bcm3510_register_value v,hab;
 157         int ret,i;
 158         unsigned long t;
 159
 160 /* Check if any previous HAB request still needs to be serviced by the
 161  * Acquisition Processor before sending new request */
 162         if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
 163                 return ret;
 164         if (v.HABSTAT_a8.HABR) {
 165                 deb_info("HAB is running already - clearing it.\n");
 166                 v.HABSTAT_a8.HABR = 0;
 167                 bcm3510_writeB(st,0xa8,v);
 168 //              return -EBUSY;
 169         }
 170
 171 /* Send the start HAB Address (automatically incremented after write of
 172  * HABDATA) and write the HAB Data */
 173         hab.HABADR_a6.HABADR = 0;
 174         if ((ret = bcm3510_writeB(st,0xa6,hab)) < 0)
 175                 return ret;
 176
 177         for (i = 0; i < len; i++) {
 178                 hab.HABDATA_a7 = buf[i];
 179                 if ((ret = bcm3510_writeB(st,0xa7,hab)) < 0)
 180                         return ret;
 181         }
 182
 183 /* Set the HABR bit to indicate AP request in progress (LBHABR allows HABR to
 184  * be written) */
 185         v.raw = 0; v.HABSTAT_a8.HABR = 1; v.HABSTAT_a8.LDHABR = 1;
 186         if ((ret = bcm3510_writeB(st,0xa8,v)) < 0)
 187                 return ret;
 188
 189 /* Polling method: Wait until the AP finishes processing the HAB request */
 190         t = jiffies + 1*HZ;
 191         while (time_before(jiffies, t)) {
 192                 deb_info("waiting for HAB to complete\n");
 193                 msleep(10);
 194                 if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
 195                         return ret;
 196
 197                 if (!v.HABSTAT_a8.HABR)
 198                         return 0;
 199         }
 200
 201         deb_info("send_request execution timed out.\n");
 202         return -ETIMEDOUT;
 203 }
 204
 205 static int bcm3510_do_hab_cmd(struct bcm3510_state *st, u8 cmd, u8 msgid, u8 *obuf, u8 olen, u8 *ibuf, u8 ilen)
 206 {
 207         u8 ob[MAX_XFER_SIZE], ib[MAX_XFER_SIZE];
 208         int ret = 0;
 209
 210         if (ilen + 2 > sizeof(ib)) {
 211                 deb_hab("do_hab_cmd: ilen=%d is too big!\n", ilen);
 212                 return -EINVAL;
 213         }
 214
 215         if (olen + 2 > sizeof(ob)) {
 216                 deb_hab("do_hab_cmd: olen=%d is too big!\n", olen);
 217                 return -EINVAL;
 218         }
 219
 220         ob[0] = cmd;
 221         ob[1] = msgid;
 222         memcpy(&ob[2],obuf,olen);
 223
 224         deb_hab("hab snd: ");
 225         dbufout(ob,olen+2,deb_hab);
 226         deb_hab("\n");
 227
 228         if (mutex_lock_interruptible(&st->hab_mutex) < 0)
 229                 return -EAGAIN;
 230
 231         if ((ret = bcm3510_hab_send_request(st, ob, olen+2)) < 0 ||
 232                 (ret = bcm3510_hab_get_response(st, ib, ilen+2)) < 0)
 233                 goto error;
 234
 235         deb_hab("hab get: ");
 236         dbufout(ib,ilen+2,deb_hab);
 237         deb_hab("\n");
 238
 239         memcpy(ibuf,&ib[2],ilen);
 240 error:
 241         mutex_unlock(&st->hab_mutex);
 242         return ret;
 243 }
 244
 245 #if 0
 246 /* not needed, we use a semaphore to prevent HAB races */
 247 static int bcm3510_is_ap_ready(struct bcm3510_state *st)
 248 {
 249         bcm3510_register_value ap,hab;
 250         int ret;
 251
 252         if ((ret = bcm3510_readB(st,0xa8,&hab)) < 0 ||
 253                 (ret = bcm3510_readB(st,0xa2,&ap) < 0))
 254                 return ret;
 255
 256         if (ap.APSTAT1_a2.RESET || ap.APSTAT1_a2.IDLE || ap.APSTAT1_a2.STOP || hab.HABSTAT_a8.HABR) {
 257                 deb_info("AP is busy\n");
 258                 return -EBUSY;
 259         }
 260
 261         return 0;
 262 }
 263 #endif
 264
 265 static int bcm3510_bert_reset(struct bcm3510_state *st)
 266 {
 267         bcm3510_register_value b;
 268         int ret;
 269
 270         if ((ret = bcm3510_readB(st,0xfa,&b)) < 0)
 271                 return ret;
 272
 273         b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
 274         b.BERCTL_fa.RESYNC = 1; bcm3510_writeB(st,0xfa,b);
 275         b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
 276         b.BERCTL_fa.CNTCTL = 1; b.BERCTL_fa.BITCNT = 1; bcm3510_writeB(st,0xfa,b);
 277
 278         /* clear residual bit counter TODO  */
 279         return 0;
 280 }
 281
 282 static int bcm3510_refresh_state(struct bcm3510_state *st)
 283 {
 284         if (time_after(jiffies,st->next_status_check)) {
 285                 bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS1, NULL,0, (u8 *)&st->status1, sizeof(st->status1));
 286                 bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS2, NULL,0, (u8 *)&st->status2, sizeof(st->status2));
 287                 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
 288         }
 289         return 0;
 290 }
 291
 292 static int bcm3510_read_status(struct dvb_frontend *fe, enum fe_status *status)
 293 {
 294         struct bcm3510_state* st = fe->demodulator_priv;
 295         bcm3510_refresh_state(st);
 296
 297         *status = 0;
 298         if (st->status1.STATUS1.RECEIVER_LOCK)
 299                 *status |= FE_HAS_LOCK | FE_HAS_SYNC;
 300
 301         if (st->status1.STATUS1.FEC_LOCK)
 302                 *status |= FE_HAS_VITERBI;
 303
 304         if (st->status1.STATUS1.OUT_PLL_LOCK)
 305                 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
 306
 307         if (*status & FE_HAS_LOCK)
 308                 st->status_check_interval = 1500;
 309         else /* more frequently checks if no lock has been achieved yet */
 310                 st->status_check_interval = 500;
 311
 312         deb_info("real_status: %02x\n",*status);
 313         return 0;
 314 }
 315
 316 static int bcm3510_read_ber(struct dvb_frontend* fe, u32* ber)
 317 {
 318         struct bcm3510_state* st = fe->demodulator_priv;
 319         bcm3510_refresh_state(st);
 320
 321         *ber = (st->status2.LDBER0 << 16) | (st->status2.LDBER1 << 8) | st->status2.LDBER2;
 322         return 0;
 323 }
 324
 325 static int bcm3510_read_unc(struct dvb_frontend* fe, u32* unc)
 326 {
 327         struct bcm3510_state* st = fe->demodulator_priv;
 328         bcm3510_refresh_state(st);
 329         *unc = (st->status2.LDUERC0 << 8) | st->status2.LDUERC1;
 330         return 0;
 331 }
 332
 333 static int bcm3510_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 334 {
 335         struct bcm3510_state* st = fe->demodulator_priv;
 336         s32 t;
 337
 338         bcm3510_refresh_state(st);
 339         t = st->status2.SIGNAL;
 340
 341         if (t > 190)
 342                 t = 190;
 343         if (t < 90)
 344                 t = 90;
 345
 346         t -= 90;
 347         t = t * 0xff / 100;
 348         /* normalize if necessary */
 349         *strength = (t << 8) | t;
 350         return 0;
 351 }
 352
 353 static int bcm3510_read_snr(struct dvb_frontend* fe, u16* snr)
 354 {
 355         struct bcm3510_state* st = fe->demodulator_priv;
 356         bcm3510_refresh_state(st);
 357
 358         *snr = st->status1.SNR_EST0*1000 + ((st->status1.SNR_EST1*1000) >> 8);
 359         return 0;
 360 }
 361
 362 /* tuner frontend programming */
 363 static int bcm3510_tuner_cmd(struct bcm3510_state* st,u8 bc, u16 n, u8 a)
 364 {
 365         struct bcm3510_hab_cmd_tune c;
 366         memset(&c,0,sizeof(struct bcm3510_hab_cmd_tune));
 367
 368 /* I2C Mode disabled,  set 16 control / Data pairs */
 369         c.length = 0x10;
 370         c.clock_width = 0;
 371 /* CS1, CS0, DATA, CLK bits control the tuner RF_AGC_SEL pin is set to
 372  * logic high (as Configuration) */
 373         c.misc = 0x10;
 374 /* Set duration of the initial state of TUNCTL = 3.34 micro Sec */
 375         c.TUNCTL_state = 0x40;
 376
 377 /* PRESCALER DIVIDE RATIO | BC1_2_3_4; (band switch), 1stosc REFERENCE COUNTER REF_S12 and REF_S11 */
 378         c.ctl_dat[0].ctrl.size = BITS_8;
 379         c.ctl_dat[0].data      = 0x80 | bc;
 380
 381 /* Control DATA pin, 1stosc REFERENCE COUNTER REF_S10 to REF_S3 */
 382         c.ctl_dat[1].ctrl.size = BITS_8;
 383         c.ctl_dat[1].data      = 4;
 384
 385 /* set CONTROL BIT 1 to 1, 1stosc REFERENCE COUNTER REF_S2 to REF_S1 */
 386         c.ctl_dat[2].ctrl.size = BITS_3;
 387         c.ctl_dat[2].data      = 0x20;
 388
 389 /* control CS0 pin, pulse byte ? */
 390         c.ctl_dat[3].ctrl.size = BITS_3;
 391         c.ctl_dat[3].ctrl.clk_off = 1;
 392         c.ctl_dat[3].ctrl.cs0  = 1;
 393         c.ctl_dat[3].data      = 0x40;
 394
 395 /* PGM_S18 to PGM_S11 */
 396         c.ctl_dat[4].ctrl.size = BITS_8;
 397         c.ctl_dat[4].data      = n >> 3;
 398
 399 /* PGM_S10 to PGM_S8, SWL_S7 to SWL_S3 */
 400         c.ctl_dat[5].ctrl.size = BITS_8;
 401         c.ctl_dat[5].data      = ((n & 0x7) << 5) | (a >> 2);
 402
 403 /* SWL_S2 and SWL_S1, set CONTROL BIT 2 to 0 */
 404         c.ctl_dat[6].ctrl.size = BITS_3;
 405         c.ctl_dat[6].data      = (a << 6) & 0xdf;
 406
 407 /* control CS0 pin, pulse byte ? */
 408         c.ctl_dat[7].ctrl.size = BITS_3;
 409         c.ctl_dat[7].ctrl.clk_off = 1;
 410         c.ctl_dat[7].ctrl.cs0  = 1;
 411         c.ctl_dat[7].data      = 0x40;
 412
 413 /* PRESCALER DIVIDE RATIO, 2ndosc REFERENCE COUNTER REF_S12 and REF_S11 */
 414         c.ctl_dat[8].ctrl.size = BITS_8;
 415         c.ctl_dat[8].data      = 0x80;
 416
 417 /* 2ndosc REFERENCE COUNTER REF_S10 to REF_S3 */
 418         c.ctl_dat[9].ctrl.size = BITS_8;
 419         c.ctl_dat[9].data      = 0x10;
 420
 421 /* set CONTROL BIT 1 to 1, 2ndosc REFERENCE COUNTER REF_S2 to REF_S1 */
 422         c.ctl_dat[10].ctrl.size = BITS_3;
 423         c.ctl_dat[10].data      = 0x20;
 424
 425 /* pulse byte */
 426         c.ctl_dat[11].ctrl.size = BITS_3;
 427         c.ctl_dat[11].ctrl.clk_off = 1;
 428         c.ctl_dat[11].ctrl.cs1  = 1;
 429         c.ctl_dat[11].data      = 0x40;
 430
 431 /* PGM_S18 to PGM_S11 */
 432         c.ctl_dat[12].ctrl.size = BITS_8;
 433         c.ctl_dat[12].data      = 0x2a;
 434
 435 /* PGM_S10 to PGM_S8 and SWL_S7 to SWL_S3 */
 436         c.ctl_dat[13].ctrl.size = BITS_8;
 437         c.ctl_dat[13].data      = 0x8e;
 438
 439 /* SWL_S2 and SWL_S1 and set CONTROL BIT 2 to 0 */
 440         c.ctl_dat[14].ctrl.size = BITS_3;
 441         c.ctl_dat[14].data      = 0;
 442
 443 /* Pulse Byte */
 444         c.ctl_dat[15].ctrl.size = BITS_3;
 445         c.ctl_dat[15].ctrl.clk_off = 1;
 446         c.ctl_dat[15].ctrl.cs1  = 1;
 447         c.ctl_dat[15].data      = 0x40;
 448
 449         return bcm3510_do_hab_cmd(st,CMD_TUNE, MSGID_TUNE,(u8 *) &c,sizeof(c), NULL, 0);
 450 }
 451
 452 static int bcm3510_set_freq(struct bcm3510_state* st,u32 freq)
 453 {
 454         u8 bc,a;
 455         u16 n;
 456         s32 YIntercept,Tfvco1;
 457
 458         freq /= 1000;
 459
 460         deb_info("%dkHz:",freq);
 461         /* set Band Switch */
 462         if (freq <= 168000)
 463                 bc = 0x1c;
 464         else if (freq <= 378000)
 465                 bc = 0x2c;
 466         else
 467                 bc = 0x30;
 468
 469         if (freq >= 470000) {
 470                 freq -= 470001;
 471                 YIntercept = 18805;
 472         } else if (freq >= 90000) {
 473                 freq -= 90001;
 474                 YIntercept = 15005;
 475         } else if (freq >= 76000){
 476                 freq -= 76001;
 477                 YIntercept = 14865;
 478         } else {
 479                 freq -= 54001;
 480                 YIntercept = 14645;
 481         }
 482
 483         Tfvco1 = (((freq/6000)*60 + YIntercept)*4)/10;
 484
 485         n = Tfvco1 >> 6;
 486         a = Tfvco1 & 0x3f;
 487
 488         deb_info(" BC1_2_3_4: %x, N: %x A: %x\n", bc, n, a);
 489         if (n >= 16 && n <= 2047)
 490                 return bcm3510_tuner_cmd(st,bc,n,a);
 491
 492         return -EINVAL;
 493 }
 494
 495 static int bcm3510_set_frontend(struct dvb_frontend *fe)
 496 {
 497         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 498         struct bcm3510_state* st = fe->demodulator_priv;
 499         struct bcm3510_hab_cmd_ext_acquire cmd;
 500         struct bcm3510_hab_cmd_bert_control bert;
 501         int ret;
 502
 503         memset(&cmd,0,sizeof(cmd));
 504         switch (c->modulation) {
 505                 case QAM_256:
 506                         cmd.ACQUIRE0.MODE = 0x1;
 507                         cmd.ACQUIRE1.SYM_RATE = 0x1;
 508                         cmd.ACQUIRE1.IF_FREQ = 0x1;
 509                         break;
 510                 case QAM_64:
 511                         cmd.ACQUIRE0.MODE = 0x2;
 512                         cmd.ACQUIRE1.SYM_RATE = 0x2;
 513                         cmd.ACQUIRE1.IF_FREQ = 0x1;
 514                         break;
 515 #if 0
 516                 case QAM_256:
 517                         cmd.ACQUIRE0.MODE = 0x3;
 518                         break;
 519                 case QAM_128:
 520                         cmd.ACQUIRE0.MODE = 0x4;
 521                         break;
 522                 case QAM_64:
 523                         cmd.ACQUIRE0.MODE = 0x5;
 524                         break;
 525                 case QAM_32:
 526                         cmd.ACQUIRE0.MODE = 0x6;
 527                         break;
 528                 case QAM_16:
 529                         cmd.ACQUIRE0.MODE = 0x7;
 530                         break;
 531 #endif
 532                 case VSB_8:
 533                         cmd.ACQUIRE0.MODE = 0x8;
 534                         cmd.ACQUIRE1.SYM_RATE = 0x0;
 535                         cmd.ACQUIRE1.IF_FREQ = 0x0;
 536                         break;
 537                 case VSB_16:
 538                         cmd.ACQUIRE0.MODE = 0x9;
 539                         cmd.ACQUIRE1.SYM_RATE = 0x0;
 540                         cmd.ACQUIRE1.IF_FREQ = 0x0;
 541                 default:
 542                         return -EINVAL;
 543         }
 544         cmd.ACQUIRE0.OFFSET = 0;
 545         cmd.ACQUIRE0.NTSCSWEEP = 1;
 546         cmd.ACQUIRE0.FA = 1;
 547         cmd.ACQUIRE0.BW = 0;
 548
 549 /*      if (enableOffset) {
 550                 cmd.IF_OFFSET0 = xx;
 551                 cmd.IF_OFFSET1 = xx;
 552
 553                 cmd.SYM_OFFSET0 = xx;
 554                 cmd.SYM_OFFSET1 = xx;
 555                 if (enableNtscSweep) {
 556                         cmd.NTSC_OFFSET0;
 557                         cmd.NTSC_OFFSET1;
 558                 }
 559         } */
 560         bcm3510_do_hab_cmd(st, CMD_ACQUIRE, MSGID_EXT_TUNER_ACQUIRE, (u8 *) &cmd, sizeof(cmd), NULL, 0);
 561
 562 /* doing it with different MSGIDs, data book and source differs */
 563         bert.BE = 0;
 564         bert.unused = 0;
 565         bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_CONTROL, (u8 *) &bert, sizeof(bert), NULL, 0);
 566         bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_SET, (u8 *) &bert, sizeof(bert), NULL, 0);
 567
 568         bcm3510_bert_reset(st);
 569
 570         ret = bcm3510_set_freq(st, c->frequency);
 571         if (ret < 0)
 572                 return ret;
 573
 574         memset(&st->status1,0,sizeof(st->status1));
 575         memset(&st->status2,0,sizeof(st->status2));
 576         st->status_check_interval = 500;
 577
 578 /* Give the AP some time */
 579         msleep(200);
 580
 581         return 0;
 582 }
 583
 584 static int bcm3510_sleep(struct dvb_frontend* fe)
 585 {
 586         return 0;
 587 }
 588
 589 static int bcm3510_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *s)
 590 {
 591         s->min_delay_ms = 1000;
 592         s->step_size = 0;
 593         s->max_drift = 0;
 594         return 0;
 595 }
 596
 597 static void bcm3510_release(struct dvb_frontend* fe)
 598 {
 599         struct bcm3510_state* state = fe->demodulator_priv;
 600         kfree(state);
 601 }
 602
 603 /* firmware download:
 604  * firmware file is build up like this:
 605  * 16bit addr, 16bit length, 8byte of length
 606  */
 607 #define BCM3510_DEFAULT_FIRMWARE "dvb-fe-bcm3510-01.fw"
 608
 609 static int bcm3510_write_ram(struct bcm3510_state *st, u16 addr, const u8 *b,
 610                              u16 len)
 611 {
 612         int ret = 0,i;
 613         bcm3510_register_value vH, vL,vD;
 614
 615         vH.MADRH_a9 = addr >> 8;
 616         vL.MADRL_aa = addr;
 617         if ((ret = bcm3510_writeB(st,0xa9,vH)) < 0) return ret;
 618         if ((ret = bcm3510_writeB(st,0xaa,vL)) < 0) return ret;
 619
 620         for (i = 0; i < len; i++) {
 621                 vD.MDATA_ab = b[i];
 622                 if ((ret = bcm3510_writeB(st,0xab,vD)) < 0)
 623                         return ret;
 624         }
 625
 626         return 0;
 627 }
 628
 629 static int bcm3510_download_firmware(struct dvb_frontend* fe)
 630 {
 631         struct bcm3510_state* st = fe->demodulator_priv;
 632         const struct firmware *fw;
 633         u16 addr,len;
 634         const u8 *b;
 635         int ret,i;
 636
 637         deb_info("requesting firmware\n");
 638         if ((ret = st->config->request_firmware(fe, &fw, BCM3510_DEFAULT_FIRMWARE)) < 0) {
 639                 err("could not load firmware (%s): %d",BCM3510_DEFAULT_FIRMWARE,ret);
 640                 return ret;
 641         }
 642         deb_info("got firmware: %zu\n", fw->size);
 643
 644         b = fw->data;
 645         for (i = 0; i < fw->size;) {
 646                 addr = le16_to_cpu(*((__le16 *)&b[i]));
 647                 len  = le16_to_cpu(*((__le16 *)&b[i+2]));
 648                 deb_info("firmware chunk, addr: 0x%04x, len: 0x%04x, total length: 0x%04zx\n",addr,len,fw->size);
 649                 if ((ret = bcm3510_write_ram(st,addr,&b[i+4],len)) < 0) {
 650                         err("firmware download failed: %d\n",ret);
 651                         return ret;
 652                 }
 653                 i += 4 + len;
 654         }
 655         release_firmware(fw);
 656         deb_info("firmware download successfully completed\n");
 657         return 0;
 658 }
 659
 660 static int bcm3510_check_firmware_version(struct bcm3510_state *st)
 661 {
 662         struct bcm3510_hab_cmd_get_version_info ver;
 663         bcm3510_do_hab_cmd(st,CMD_GET_VERSION_INFO,MSGID_GET_VERSION_INFO,NULL,0,(u8*)&ver,sizeof(ver));
 664
 665         deb_info("Version information: 0x%02x 0x%02x 0x%02x 0x%02x\n",
 666                 ver.microcode_version, ver.script_version, ver.config_version, ver.demod_version);
 667
 668         if (ver.script_version == BCM3510_DEF_SCRIPT_VERSION &&
 669                 ver.config_version == BCM3510_DEF_CONFIG_VERSION &&
 670                 ver.demod_version  == BCM3510_DEF_DEMOD_VERSION)
 671                 return 0;
 672
 673         deb_info("version check failed\n");
 674         return -ENODEV;
 675 }
 676
 677 /* (un)resetting the AP */
 678 static int bcm3510_reset(struct bcm3510_state *st)
 679 {
 680         int ret;
 681         unsigned long  t;
 682         bcm3510_register_value v;
 683
 684         bcm3510_readB(st,0xa0,&v); v.HCTL1_a0.RESET = 1;
 685         if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
 686                 return ret;
 687
 688         t = jiffies + 3*HZ;
 689         while (time_before(jiffies, t)) {
 690                 msleep(10);
 691                 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
 692                         return ret;
 693
 694                 if (v.APSTAT1_a2.RESET)
 695                         return 0;
 696         }
 697         deb_info("reset timed out\n");
 698         return -ETIMEDOUT;
 699 }
 700
 701 static int bcm3510_clear_reset(struct bcm3510_state *st)
 702 {
 703         bcm3510_register_value v;
 704         int ret;
 705         unsigned long t;
 706
 707         v.raw = 0;
 708         if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
 709                 return ret;
 710
 711         t = jiffies + 3*HZ;
 712         while (time_before(jiffies, t)) {
 713                 msleep(10);
 714                 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
 715                         return ret;
 716
 717                 /* verify that reset is cleared */
 718                 if (!v.APSTAT1_a2.RESET)
 719                         return 0;
 720         }
 721         deb_info("reset clear timed out\n");
 722         return -ETIMEDOUT;
 723 }
 724
 725 static int bcm3510_init_cold(struct bcm3510_state *st)
 726 {
 727         int ret;
 728         bcm3510_register_value v;
 729
 730         /* read Acquisation Processor status register and check it is not in RUN mode */
 731         if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
 732                 return ret;
 733         if (v.APSTAT1_a2.RUN) {
 734                 deb_info("AP is already running - firmware already loaded.\n");
 735                 return 0;
 736         }
 737
 738         deb_info("reset?\n");
 739         if ((ret = bcm3510_reset(st)) < 0)
 740                 return ret;
 741
 742         deb_info("tristate?\n");
 743         /* tri-state */
 744         v.TSTCTL_2e.CTL = 0;
 745         if ((ret = bcm3510_writeB(st,0x2e,v)) < 0)
 746                 return ret;
 747
 748         deb_info("firmware?\n");
 749         if ((ret = bcm3510_download_firmware(&st->frontend)) < 0 ||
 750                 (ret = bcm3510_clear_reset(st)) < 0)
 751                 return ret;
 752
 753         /* anything left here to Let the acquisition processor begin execution at program counter 0000 ??? */
 754
 755         return 0;
 756 }
 757
 758 static int bcm3510_init(struct dvb_frontend* fe)
 759 {
 760         struct bcm3510_state* st = fe->demodulator_priv;
 761         bcm3510_register_value j;
 762         struct bcm3510_hab_cmd_set_agc c;
 763         int ret;
 764
 765         if ((ret = bcm3510_readB(st,0xca,&j)) < 0)
 766                 return ret;
 767
 768         deb_info("JDEC: %02x\n",j.raw);
 769
 770         switch (j.JDEC_ca.JDEC) {
 771                 case JDEC_WAIT_AT_RAM:
 772                         deb_info("attempting to download firmware\n");
 773                         if ((ret = bcm3510_init_cold(st)) < 0)
 774                                 return ret;
 775                 case JDEC_EEPROM_LOAD_WAIT: /* fall-through is wanted */
 776                         deb_info("firmware is loaded\n");
 777                         bcm3510_check_firmware_version(st);
 778                         break;
 779                 default:
 780                         return -ENODEV;
 781         }
 782
 783         memset(&c,0,1);
 784         c.SEL = 1;
 785         bcm3510_do_hab_cmd(st,CMD_AUTO_PARAM,MSGID_SET_RF_AGC_SEL,(u8 *)&c,sizeof(c),NULL,0);
 786
 787         return 0;
 788 }
 789
 790
 791 static const struct dvb_frontend_ops bcm3510_ops;
 792
 793 struct dvb_frontend* bcm3510_attach(const struct bcm3510_config *config,
 794                                    struct i2c_adapter *i2c)
 795 {
 796         struct bcm3510_state* state = NULL;
 797         int ret;
 798         bcm3510_register_value v;
 799
 800         /* allocate memory for the internal state */
 801         state = kzalloc(sizeof(struct bcm3510_state), GFP_KERNEL);
 802         if (state == NULL)
 803                 goto error;
 804
 805         /* setup the state */
 806
 807         state->config = config;
 808         state->i2c = i2c;
 809
 810         /* create dvb_frontend */
 811         memcpy(&state->frontend.ops, &bcm3510_ops, sizeof(struct dvb_frontend_ops));
 812         state->frontend.demodulator_priv = state;
 813
 814         mutex_init(&state->hab_mutex);
 815
 816         if ((ret = bcm3510_readB(state,0xe0,&v)) < 0)
 817                 goto error;
 818
 819         deb_info("Revision: 0x%1x, Layer: 0x%1x.\n",v.REVID_e0.REV,v.REVID_e0.LAYER);
 820
 821         if ((v.REVID_e0.REV != 0x1 && v.REVID_e0.LAYER != 0xb) && /* cold */
 822                 (v.REVID_e0.REV != 0x8 && v.REVID_e0.LAYER != 0x0))   /* warm */
 823                 goto error;
 824
 825         info("Revision: 0x%1x, Layer: 0x%1x.",v.REVID_e0.REV,v.REVID_e0.LAYER);
 826
 827         bcm3510_reset(state);
 828
 829         return &state->frontend;
 830
 831 error:
 832         kfree(state);
 833         return NULL;
 834 }
 835 EXPORT_SYMBOL(bcm3510_attach);
 836
 837 static const struct dvb_frontend_ops bcm3510_ops = {
 838         .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
 839         .info = {
 840                 .name = "Broadcom BCM3510 VSB/QAM frontend",
 841                 .frequency_min =  54000000,
 842                 .frequency_max = 803000000,
 843                 /* stepsize is just a guess */
 844                 .frequency_stepsize = 0,
 845                 .caps =
 846                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 847                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 848                         FE_CAN_8VSB | FE_CAN_16VSB |
 849                         FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_128 | FE_CAN_QAM_256
 850         },
 851
 852         .release = bcm3510_release,
 853
 854         .init = bcm3510_init,
 855         .sleep = bcm3510_sleep,
 856
 857         .set_frontend = bcm3510_set_frontend,
 858         .get_tune_settings = bcm3510_get_tune_settings,
 859
 860         .read_status = bcm3510_read_status,
 861         .read_ber = bcm3510_read_ber,
 862         .read_signal_strength = bcm3510_read_signal_strength,
 863         .read_snr = bcm3510_read_snr,
 864         .read_ucblocks = bcm3510_read_unc,
 865 };
 866
 867 MODULE_DESCRIPTION("Broadcom BCM3510 ATSC (8VSB/16VSB & ITU J83 AnnexB FEC QAM64/256) demodulator driver");
 868 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 869 MODULE_LICENSE("GPL");