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 <media/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 = ®, .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 break; 542 default: 543 return -EINVAL; 544 } 545 cmd.ACQUIRE0.OFFSET = 0; 546 cmd.ACQUIRE0.NTSCSWEEP = 1; 547 cmd.ACQUIRE0.FA = 1; 548 cmd.ACQUIRE0.BW = 0; 549 550 /* if (enableOffset) { 551 cmd.IF_OFFSET0 = xx; 552 cmd.IF_OFFSET1 = xx; 553 554 cmd.SYM_OFFSET0 = xx; 555 cmd.SYM_OFFSET1 = xx; 556 if (enableNtscSweep) { 557 cmd.NTSC_OFFSET0; 558 cmd.NTSC_OFFSET1; 559 } 560 } */ 561 bcm3510_do_hab_cmd(st, CMD_ACQUIRE, MSGID_EXT_TUNER_ACQUIRE, (u8 *) &cmd, sizeof(cmd), NULL, 0); 562 563 /* doing it with different MSGIDs, data book and source differs */ 564 bert.BE = 0; 565 bert.unused = 0; 566 bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_CONTROL, (u8 *) &bert, sizeof(bert), NULL, 0); 567 bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_SET, (u8 *) &bert, sizeof(bert), NULL, 0); 568 569 bcm3510_bert_reset(st); 570 571 ret = bcm3510_set_freq(st, c->frequency); 572 if (ret < 0) 573 return ret; 574 575 memset(&st->status1,0,sizeof(st->status1)); 576 memset(&st->status2,0,sizeof(st->status2)); 577 st->status_check_interval = 500; 578 579 /* Give the AP some time */ 580 msleep(200); 581 582 return 0; 583 } 584 585 static int bcm3510_sleep(struct dvb_frontend* fe) 586 { 587 return 0; 588 } 589 590 static int bcm3510_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *s) 591 { 592 s->min_delay_ms = 1000; 593 s->step_size = 0; 594 s->max_drift = 0; 595 return 0; 596 } 597 598 static void bcm3510_release(struct dvb_frontend* fe) 599 { 600 struct bcm3510_state* state = fe->demodulator_priv; 601 kfree(state); 602 } 603 604 /* firmware download: 605 * firmware file is build up like this: 606 * 16bit addr, 16bit length, 8byte of length 607 */ 608 #define BCM3510_DEFAULT_FIRMWARE "dvb-fe-bcm3510-01.fw" 609 610 static int bcm3510_write_ram(struct bcm3510_state *st, u16 addr, const u8 *b, 611 u16 len) 612 { 613 int ret = 0,i; 614 bcm3510_register_value vH, vL,vD; 615 616 vH.MADRH_a9 = addr >> 8; 617 vL.MADRL_aa = addr; 618 if ((ret = bcm3510_writeB(st,0xa9,vH)) < 0) return ret; 619 if ((ret = bcm3510_writeB(st,0xaa,vL)) < 0) return ret; 620 621 for (i = 0; i < len; i++) { 622 vD.MDATA_ab = b[i]; 623 if ((ret = bcm3510_writeB(st,0xab,vD)) < 0) 624 return ret; 625 } 626 627 return 0; 628 } 629 630 static int bcm3510_download_firmware(struct dvb_frontend* fe) 631 { 632 struct bcm3510_state* st = fe->demodulator_priv; 633 const struct firmware *fw; 634 u16 addr,len; 635 const u8 *b; 636 int ret,i; 637 638 deb_info("requesting firmware\n"); 639 if ((ret = st->config->request_firmware(fe, &fw, BCM3510_DEFAULT_FIRMWARE)) < 0) { 640 err("could not load firmware (%s): %d",BCM3510_DEFAULT_FIRMWARE,ret); 641 return ret; 642 } 643 deb_info("got firmware: %zu\n", fw->size); 644 645 b = fw->data; 646 for (i = 0; i < fw->size;) { 647 addr = le16_to_cpu(*((__le16 *)&b[i])); 648 len = le16_to_cpu(*((__le16 *)&b[i+2])); 649 deb_info("firmware chunk, addr: 0x%04x, len: 0x%04x, total length: 0x%04zx\n",addr,len,fw->size); 650 if ((ret = bcm3510_write_ram(st,addr,&b[i+4],len)) < 0) { 651 err("firmware download failed: %d\n",ret); 652 release_firmware(fw); 653 return ret; 654 } 655 i += 4 + len; 656 } 657 release_firmware(fw); 658 deb_info("firmware download successfully completed\n"); 659 return 0; 660 } 661 662 static int bcm3510_check_firmware_version(struct bcm3510_state *st) 663 { 664 struct bcm3510_hab_cmd_get_version_info ver; 665 bcm3510_do_hab_cmd(st,CMD_GET_VERSION_INFO,MSGID_GET_VERSION_INFO,NULL,0,(u8*)&ver,sizeof(ver)); 666 667 deb_info("Version information: 0x%02x 0x%02x 0x%02x 0x%02x\n", 668 ver.microcode_version, ver.script_version, ver.config_version, ver.demod_version); 669 670 if (ver.script_version == BCM3510_DEF_SCRIPT_VERSION && 671 ver.config_version == BCM3510_DEF_CONFIG_VERSION && 672 ver.demod_version == BCM3510_DEF_DEMOD_VERSION) 673 return 0; 674 675 deb_info("version check failed\n"); 676 return -ENODEV; 677 } 678 679 /* (un)resetting the AP */ 680 static int bcm3510_reset(struct bcm3510_state *st) 681 { 682 int ret; 683 unsigned long t; 684 bcm3510_register_value v; 685 686 bcm3510_readB(st,0xa0,&v); v.HCTL1_a0.RESET = 1; 687 if ((ret = bcm3510_writeB(st,0xa0,v)) < 0) 688 return ret; 689 690 t = jiffies + 3*HZ; 691 while (time_before(jiffies, t)) { 692 msleep(10); 693 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0) 694 return ret; 695 696 if (v.APSTAT1_a2.RESET) 697 return 0; 698 } 699 deb_info("reset timed out\n"); 700 return -ETIMEDOUT; 701 } 702 703 static int bcm3510_clear_reset(struct bcm3510_state *st) 704 { 705 bcm3510_register_value v; 706 int ret; 707 unsigned long t; 708 709 v.raw = 0; 710 if ((ret = bcm3510_writeB(st,0xa0,v)) < 0) 711 return ret; 712 713 t = jiffies + 3*HZ; 714 while (time_before(jiffies, t)) { 715 msleep(10); 716 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0) 717 return ret; 718 719 /* verify that reset is cleared */ 720 if (!v.APSTAT1_a2.RESET) 721 return 0; 722 } 723 deb_info("reset clear timed out\n"); 724 return -ETIMEDOUT; 725 } 726 727 static int bcm3510_init_cold(struct bcm3510_state *st) 728 { 729 int ret; 730 bcm3510_register_value v; 731 732 /* read Acquisation Processor status register and check it is not in RUN mode */ 733 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0) 734 return ret; 735 if (v.APSTAT1_a2.RUN) { 736 deb_info("AP is already running - firmware already loaded.\n"); 737 return 0; 738 } 739 740 deb_info("reset?\n"); 741 if ((ret = bcm3510_reset(st)) < 0) 742 return ret; 743 744 deb_info("tristate?\n"); 745 /* tri-state */ 746 v.TSTCTL_2e.CTL = 0; 747 if ((ret = bcm3510_writeB(st,0x2e,v)) < 0) 748 return ret; 749 750 deb_info("firmware?\n"); 751 if ((ret = bcm3510_download_firmware(&st->frontend)) < 0 || 752 (ret = bcm3510_clear_reset(st)) < 0) 753 return ret; 754 755 /* anything left here to Let the acquisition processor begin execution at program counter 0000 ??? */ 756 757 return 0; 758 } 759 760 static int bcm3510_init(struct dvb_frontend* fe) 761 { 762 struct bcm3510_state* st = fe->demodulator_priv; 763 bcm3510_register_value j; 764 struct bcm3510_hab_cmd_set_agc c; 765 int ret; 766 767 if ((ret = bcm3510_readB(st,0xca,&j)) < 0) 768 return ret; 769 770 deb_info("JDEC: %02x\n",j.raw); 771 772 switch (j.JDEC_ca.JDEC) { 773 case JDEC_WAIT_AT_RAM: 774 deb_info("attempting to download firmware\n"); 775 if ((ret = bcm3510_init_cold(st)) < 0) 776 return ret; 777 fallthrough; 778 case JDEC_EEPROM_LOAD_WAIT: 779 deb_info("firmware is loaded\n"); 780 bcm3510_check_firmware_version(st); 781 break; 782 default: 783 return -ENODEV; 784 } 785 786 memset(&c,0,1); 787 c.SEL = 1; 788 bcm3510_do_hab_cmd(st,CMD_AUTO_PARAM,MSGID_SET_RF_AGC_SEL,(u8 *)&c,sizeof(c),NULL,0); 789 790 return 0; 791 } 792 793 794 static const struct dvb_frontend_ops bcm3510_ops; 795 796 struct dvb_frontend* bcm3510_attach(const struct bcm3510_config *config, 797 struct i2c_adapter *i2c) 798 { 799 struct bcm3510_state* state = NULL; 800 bcm3510_register_value v; 801 802 /* allocate memory for the internal state */ 803 state = kzalloc(sizeof(struct bcm3510_state), GFP_KERNEL); 804 if (state == NULL) 805 goto error; 806 807 /* setup the state */ 808 809 state->config = config; 810 state->i2c = i2c; 811 812 /* create dvb_frontend */ 813 memcpy(&state->frontend.ops, &bcm3510_ops, sizeof(struct dvb_frontend_ops)); 814 state->frontend.demodulator_priv = state; 815 816 mutex_init(&state->hab_mutex); 817 818 if (bcm3510_readB(state, 0xe0, &v) < 0) 819 goto error; 820 821 deb_info("Revision: 0x%1x, Layer: 0x%1x.\n",v.REVID_e0.REV,v.REVID_e0.LAYER); 822 823 if ((v.REVID_e0.REV != 0x1 && v.REVID_e0.LAYER != 0xb) && /* cold */ 824 (v.REVID_e0.REV != 0x8 && v.REVID_e0.LAYER != 0x0)) /* warm */ 825 goto error; 826 827 info("Revision: 0x%1x, Layer: 0x%1x.",v.REVID_e0.REV,v.REVID_e0.LAYER); 828 829 bcm3510_reset(state); 830 831 return &state->frontend; 832 833 error: 834 kfree(state); 835 return NULL; 836 } 837 EXPORT_SYMBOL_GPL(bcm3510_attach); 838 839 static const struct dvb_frontend_ops bcm3510_ops = { 840 .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, 841 .info = { 842 .name = "Broadcom BCM3510 VSB/QAM frontend", 843 .frequency_min_hz = 54 * MHz, 844 .frequency_max_hz = 803 * MHz, 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"); 870