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