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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 of9 * Technisat/B2C2's Air2PC ATSC PCI/USB cards/boxes. The pll-programming10 * (Panasonic CT10S) is located here, which is actually wrong. Unless there is11 * another device with a BCM3510, this is no problem.12 *13 * The driver works also with QAM64 DVB-C, but had an unreasonable high14 * 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 is17 * called "dvb-fe-bcm3510-01.fw".18 *19 * This program is free software; you can redistribute it and/or modify it20 * under the terms of the GNU General Public License as published by the Free21 * 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 WITHOUT25 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or26 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for27 * more details.28 *29 * You should have received a copy of the GNU General Public License along with30 * this program; if not, write to the Free Software Foundation, Inc., 675 Mass31 * 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 12849 50struct 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 66static int debug;67module_param(debug, int, 0644);68MODULE_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 */81static 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 104static 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 126static 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 131static 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 */137static 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 154static 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 the161 * 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 of172 * 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 to184 * 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 205static 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);240error:241 mutex_unlock(&st->hab_mutex);242 return ret;243}244 245#if 0246/* not needed, we use a semaphore to prevent HAB races */247static 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#endif264 265static 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 282static 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 292static 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 316static 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 325static 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 333static 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 353static 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 */363static 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 to372 * 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 452static 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 else467 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 495static 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 0516 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#endif532 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 585static int bcm3510_sleep(struct dvb_frontend* fe)586{587 return 0;588}589 590static 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 598static 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 length607 */608#define BCM3510_DEFAULT_FIRMWARE "dvb-fe-bcm3510-01.fw"609 610static 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 630static 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 662static 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 */680static 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 703static 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 727static 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 760static 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 794static const struct dvb_frontend_ops bcm3510_ops;795 796struct 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 833error:834 kfree(state);835 return NULL;836}837EXPORT_SYMBOL_GPL(bcm3510_attach);838 839static 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_256850 },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 867MODULE_DESCRIPTION("Broadcom BCM3510 ATSC (8VSB/16VSB & ITU J83 AnnexB FEC QAM64/256) demodulator driver");868MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");869MODULE_LICENSE("GPL");870