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-rw-r--r--drivers/media/dvb/frontends/bcm3510.c853
1 files changed, 853 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/bcm3510.c b/drivers/media/dvb/frontends/bcm3510.c
new file mode 100644
index 00000000000..f5fdc5c3e60
--- /dev/null
+++ b/drivers/media/dvb/frontends/bcm3510.c
@@ -0,0 +1,853 @@
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/moduleparam.h>
37#include <linux/device.h>
38#include <linux/firmware.h>
39
40#include "dvb_frontend.h"
41#include "bcm3510.h"
42#include "bcm3510_priv.h"
43
44struct bcm3510_state {
45
46 struct i2c_adapter* i2c;
47 struct dvb_frontend_ops ops;
48 const struct bcm3510_config* config;
49 struct dvb_frontend frontend;
50
51 /* demodulator private data */
52 struct semaphore hab_sem;
53 u8 firmware_loaded:1;
54
55 unsigned long next_status_check;
56 unsigned long status_check_interval;
57 struct bcm3510_hab_cmd_status1 status1;
58 struct bcm3510_hab_cmd_status2 status2;
59};
60
61static int debug;
62module_param(debug, int, 0644);
63MODULE_PARM_DESC(debug, "set debugging level (1=info,2=i2c (|-able)).");
64
65#define dprintk(level,x...) if (level & debug) printk(x)
66#define dbufout(b,l,m) {\
67 int i; \
68 for (i = 0; i < l; i++) \
69 m("%02x ",b[i]); \
70}
71#define deb_info(args...) dprintk(0x01,args)
72#define deb_i2c(args...) dprintk(0x02,args)
73#define deb_hab(args...) dprintk(0x04,args)
74
75/* transfer functions */
76static int bcm3510_writebytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
77{
78 u8 b[256];
79 int err;
80 struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = b, .len = len + 1 };
81
82 b[0] = reg;
83 memcpy(&b[1],buf,len);
84
85 deb_i2c("i2c wr %02x: ",reg);
86 dbufout(buf,len,deb_i2c);
87 deb_i2c("\n");
88
89 if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
90
91 deb_info("%s: i2c write error (addr %02x, reg %02x, err == %i)\n",
92 __FUNCTION__, state->config->demod_address, reg, err);
93 return -EREMOTEIO;
94 }
95
96 return 0;
97}
98
99static int bcm3510_readbytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
100{
101 struct i2c_msg msg[] = {
102 { .addr = state->config->demod_address, .flags = 0, .buf = &reg, .len = 1 },
103 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = buf, .len = len }
104 };
105 int err;
106
107 memset(buf,0,len);
108
109 if ((err = i2c_transfer (state->i2c, msg, 2)) != 2) {
110 deb_info("%s: i2c read error (addr %02x, reg %02x, err == %i)\n",
111 __FUNCTION__, state->config->demod_address, reg, err);
112 return -EREMOTEIO;
113 }
114 deb_i2c("i2c rd %02x: ",reg);
115 dbufout(buf,len,deb_i2c);
116 deb_i2c("\n");
117
118 return 0;
119}
120
121static int bcm3510_writeB(struct bcm3510_state *state, u8 reg, bcm3510_register_value v)
122{
123 return bcm3510_writebytes(state,reg,&v.raw,1);
124}
125
126static int bcm3510_readB(struct bcm3510_state *state, u8 reg, bcm3510_register_value *v)
127{
128 return bcm3510_readbytes(state,reg,&v->raw,1);
129}
130
131/* Host Access Buffer transfers */
132static int bcm3510_hab_get_response(struct bcm3510_state *st, u8 *buf, int len)
133{
134 bcm3510_register_value v;
135 int ret,i;
136
137 v.HABADR_a6.HABADR = 0;
138 if ((ret = bcm3510_writeB(st,0xa6,v)) < 0)
139 return ret;
140
141 for (i = 0; i < len; i++) {
142 if ((ret = bcm3510_readB(st,0xa7,&v)) < 0)
143 return ret;
144 buf[i] = v.HABDATA_a7;
145 }
146 return 0;
147}
148
149static int bcm3510_hab_send_request(struct bcm3510_state *st, u8 *buf, int len)
150{
151 bcm3510_register_value v,hab;
152 int ret,i;
153 unsigned long t;
154
155/* Check if any previous HAB request still needs to be serviced by the
156 * Aquisition Processor before sending new request */
157 if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
158 return ret;
159 if (v.HABSTAT_a8.HABR) {
160 deb_info("HAB is running already - clearing it.\n");
161 v.HABSTAT_a8.HABR = 0;
162 bcm3510_writeB(st,0xa8,v);
163// return -EBUSY;
164 }
165
166/* Send the start HAB Address (automatically incremented after write of
167 * HABDATA) and write the HAB Data */
168 hab.HABADR_a6.HABADR = 0;
169 if ((ret = bcm3510_writeB(st,0xa6,hab)) < 0)
170 return ret;
171
172 for (i = 0; i < len; i++) {
173 hab.HABDATA_a7 = buf[i];
174 if ((ret = bcm3510_writeB(st,0xa7,hab)) < 0)
175 return ret;
176 }
177
178/* Set the HABR bit to indicate AP request in progress (LBHABR allows HABR to
179 * be written) */
180 v.raw = 0; v.HABSTAT_a8.HABR = 1; v.HABSTAT_a8.LDHABR = 1;
181 if ((ret = bcm3510_writeB(st,0xa8,v)) < 0)
182 return ret;
183
184/* Polling method: Wait until the AP finishes processing the HAB request */
185 t = jiffies + 1*HZ;
186 while (time_before(jiffies, t)) {
187 deb_info("waiting for HAB to complete\n");
188 msleep(10);
189 if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
190 return ret;
191
192 if (!v.HABSTAT_a8.HABR)
193 return 0;
194 }
195
196 deb_info("send_request execution timed out.\n");
197 return -ETIMEDOUT;
198}
199
200static int bcm3510_do_hab_cmd(struct bcm3510_state *st, u8 cmd, u8 msgid, u8 *obuf, u8 olen, u8 *ibuf, u8 ilen)
201{
202 u8 ob[olen+2],ib[ilen+2];
203 int ret = 0;
204
205 ob[0] = cmd;
206 ob[1] = msgid;
207 memcpy(&ob[2],obuf,olen);
208
209 deb_hab("hab snd: ");
210 dbufout(ob,olen+2,deb_hab);
211 deb_hab("\n");
212
213 if (down_interruptible(&st->hab_sem) < 0)
214 return -EAGAIN;
215
216 if ((ret = bcm3510_hab_send_request(st, ob, olen+2)) < 0 ||
217 (ret = bcm3510_hab_get_response(st, ib, ilen+2)) < 0)
218 goto error;
219
220 deb_hab("hab get: ");
221 dbufout(ib,ilen+2,deb_hab);
222 deb_hab("\n");
223
224 memcpy(ibuf,&ib[2],ilen);
225error:
226 up(&st->hab_sem);
227 return ret;
228}
229
230#if 0
231/* not needed, we use a semaphore to prevent HAB races */
232static int bcm3510_is_ap_ready(struct bcm3510_state *st)
233{
234 bcm3510_register_value ap,hab;
235 int ret;
236
237 if ((ret = bcm3510_readB(st,0xa8,&hab)) < 0 ||
238 (ret = bcm3510_readB(st,0xa2,&ap) < 0))
239 return ret;
240
241 if (ap.APSTAT1_a2.RESET || ap.APSTAT1_a2.IDLE || ap.APSTAT1_a2.STOP || hab.HABSTAT_a8.HABR) {
242 deb_info("AP is busy\n");
243 return -EBUSY;
244 }
245
246 return 0;
247}
248#endif
249
250static int bcm3510_bert_reset(struct bcm3510_state *st)
251{
252 bcm3510_register_value b;
253 int ret;
254
255 if ((ret < bcm3510_readB(st,0xfa,&b)) < 0)
256 return ret;
257
258 b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
259 b.BERCTL_fa.RESYNC = 1; bcm3510_writeB(st,0xfa,b);
260 b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
261 b.BERCTL_fa.CNTCTL = 1; b.BERCTL_fa.BITCNT = 1; bcm3510_writeB(st,0xfa,b);
262
263 /* clear residual bit counter TODO */
264 return 0;
265}
266
267static int bcm3510_refresh_state(struct bcm3510_state *st)
268{
269 if (time_after(jiffies,st->next_status_check)) {
270 bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS1, NULL,0, (u8 *)&st->status1, sizeof(st->status1));
271 bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS2, NULL,0, (u8 *)&st->status2, sizeof(st->status2));
272 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
273 }
274 return 0;
275}
276
277static int bcm3510_read_status(struct dvb_frontend *fe, fe_status_t *status)
278{
279 struct bcm3510_state* st = fe->demodulator_priv;
280 bcm3510_refresh_state(st);
281
282 *status = 0;
283 if (st->status1.STATUS1.RECEIVER_LOCK)
284 *status |= FE_HAS_LOCK | FE_HAS_SYNC;
285
286 if (st->status1.STATUS1.FEC_LOCK)
287 *status |= FE_HAS_VITERBI;
288
289 if (st->status1.STATUS1.OUT_PLL_LOCK)
290 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
291
292 if (*status & FE_HAS_LOCK)
293 st->status_check_interval = 1500;
294 else /* more frequently checks if no lock has been achieved yet */
295 st->status_check_interval = 500;
296
297 deb_info("real_status: %02x\n",*status);
298 return 0;
299}
300
301static int bcm3510_read_ber(struct dvb_frontend* fe, u32* ber)
302{
303 struct bcm3510_state* st = fe->demodulator_priv;
304 bcm3510_refresh_state(st);
305
306 *ber = (st->status2.LDBER0 << 16) | (st->status2.LDBER1 << 8) | st->status2.LDBER2;
307 return 0;
308}
309
310static int bcm3510_read_unc(struct dvb_frontend* fe, u32* unc)
311{
312 struct bcm3510_state* st = fe->demodulator_priv;
313 bcm3510_refresh_state(st);
314 *unc = (st->status2.LDUERC0 << 8) | st->status2.LDUERC1;
315 return 0;
316}
317
318static int bcm3510_read_signal_strength(struct dvb_frontend* fe, u16* strength)
319{
320 struct bcm3510_state* st = fe->demodulator_priv;
321 s32 t;
322
323 bcm3510_refresh_state(st);
324 t = st->status2.SIGNAL;
325
326 if (t > 190)
327 t = 190;
328 if (t < 90)
329 t = 90;
330
331 t -= 90;
332 t = t * 0xff / 100;
333 /* normalize if necessary */
334 *strength = (t << 8) | t;
335 return 0;
336}
337
338static int bcm3510_read_snr(struct dvb_frontend* fe, u16* snr)
339{
340 struct bcm3510_state* st = fe->demodulator_priv;
341 bcm3510_refresh_state(st);
342
343 *snr = st->status1.SNR_EST0*1000 + ((st->status1.SNR_EST1*1000) >> 8);
344 return 0;
345}
346
347/* tuner frontend programming */
348static int bcm3510_tuner_cmd(struct bcm3510_state* st,u8 bc, u16 n, u8 a)
349{
350 struct bcm3510_hab_cmd_tune c;
351 memset(&c,0,sizeof(struct bcm3510_hab_cmd_tune));
352
353/* I2C Mode disabled, set 16 control / Data pairs */
354 c.length = 0x10;
355 c.clock_width = 0;
356/* CS1, CS0, DATA, CLK bits control the tuner RF_AGC_SEL pin is set to
357 * logic high (as Configuration) */
358 c.misc = 0x10;
359/* Set duration of the initial state of TUNCTL = 3.34 micro Sec */
360 c.TUNCTL_state = 0x40;
361
362/* PRESCALER DEVIDE RATIO | BC1_2_3_4; (band switch), 1stosc REFERENCE COUNTER REF_S12 and REF_S11 */
363 c.ctl_dat[0].ctrl.size = BITS_8;
364 c.ctl_dat[0].data = 0x80 | bc;
365
366/* Control DATA pin, 1stosc REFERENCE COUNTER REF_S10 to REF_S3 */
367 c.ctl_dat[1].ctrl.size = BITS_8;
368 c.ctl_dat[1].data = 4;
369
370/* set CONTROL BIT 1 to 1, 1stosc REFERENCE COUNTER REF_S2 to REF_S1 */
371 c.ctl_dat[2].ctrl.size = BITS_3;
372 c.ctl_dat[2].data = 0x20;
373
374/* control CS0 pin, pulse byte ? */
375 c.ctl_dat[3].ctrl.size = BITS_3;
376 c.ctl_dat[3].ctrl.clk_off = 1;
377 c.ctl_dat[3].ctrl.cs0 = 1;
378 c.ctl_dat[3].data = 0x40;
379
380/* PGM_S18 to PGM_S11 */
381 c.ctl_dat[4].ctrl.size = BITS_8;
382 c.ctl_dat[4].data = n >> 3;
383
384/* PGM_S10 to PGM_S8, SWL_S7 to SWL_S3 */
385 c.ctl_dat[5].ctrl.size = BITS_8;
386 c.ctl_dat[5].data = ((n & 0x7) << 5) | (a >> 2);
387
388/* SWL_S2 and SWL_S1, set CONTROL BIT 2 to 0 */
389 c.ctl_dat[6].ctrl.size = BITS_3;
390 c.ctl_dat[6].data = (a << 6) & 0xdf;
391
392/* control CS0 pin, pulse byte ? */
393 c.ctl_dat[7].ctrl.size = BITS_3;
394 c.ctl_dat[7].ctrl.clk_off = 1;
395 c.ctl_dat[7].ctrl.cs0 = 1;
396 c.ctl_dat[7].data = 0x40;
397
398/* PRESCALER DEVIDE RATIO, 2ndosc REFERENCE COUNTER REF_S12 and REF_S11 */
399 c.ctl_dat[8].ctrl.size = BITS_8;
400 c.ctl_dat[8].data = 0x80;
401
402/* 2ndosc REFERENCE COUNTER REF_S10 to REF_S3 */
403 c.ctl_dat[9].ctrl.size = BITS_8;
404 c.ctl_dat[9].data = 0x10;
405
406/* set CONTROL BIT 1 to 1, 2ndosc REFERENCE COUNTER REF_S2 to REF_S1 */
407 c.ctl_dat[10].ctrl.size = BITS_3;
408 c.ctl_dat[10].data = 0x20;
409
410/* pulse byte */
411 c.ctl_dat[11].ctrl.size = BITS_3;
412 c.ctl_dat[11].ctrl.clk_off = 1;
413 c.ctl_dat[11].ctrl.cs1 = 1;
414 c.ctl_dat[11].data = 0x40;
415
416/* PGM_S18 to PGM_S11 */
417 c.ctl_dat[12].ctrl.size = BITS_8;
418 c.ctl_dat[12].data = 0x2a;
419
420/* PGM_S10 to PGM_S8 and SWL_S7 to SWL_S3 */
421 c.ctl_dat[13].ctrl.size = BITS_8;
422 c.ctl_dat[13].data = 0x8e;
423
424/* SWL_S2 and SWL_S1 and set CONTROL BIT 2 to 0 */
425 c.ctl_dat[14].ctrl.size = BITS_3;
426 c.ctl_dat[14].data = 0;
427
428/* Pulse Byte */
429 c.ctl_dat[15].ctrl.size = BITS_3;
430 c.ctl_dat[15].ctrl.clk_off = 1;
431 c.ctl_dat[15].ctrl.cs1 = 1;
432 c.ctl_dat[15].data = 0x40;
433
434 return bcm3510_do_hab_cmd(st,CMD_TUNE, MSGID_TUNE,(u8 *) &c,sizeof(c), NULL, 0);
435}
436
437static int bcm3510_set_freq(struct bcm3510_state* st,u32 freq)
438{
439 u8 bc,a;
440 u16 n;
441 s32 YIntercept,Tfvco1;
442
443 freq /= 1000;
444
445 deb_info("%dkHz:",freq);
446 /* set Band Switch */
447 if (freq <= 168000)
448 bc = 0x1c;
449 else if (freq <= 378000)
450 bc = 0x2c;
451 else
452 bc = 0x30;
453
454 if (freq >= 470000) {
455 freq -= 470001;
456 YIntercept = 18805;
457 } else if (freq >= 90000) {
458 freq -= 90001;
459 YIntercept = 15005;
460 } else if (freq >= 76000){
461 freq -= 76001;
462 YIntercept = 14865;
463 } else {
464 freq -= 54001;
465 YIntercept = 14645;
466 }
467
468 Tfvco1 = (((freq/6000)*60 + YIntercept)*4)/10;
469
470 n = Tfvco1 >> 6;
471 a = Tfvco1 & 0x3f;
472
473 deb_info(" BC1_2_3_4: %x, N: %x A: %x\n", bc, n, a);
474 if (n >= 16 && n <= 2047)
475 return bcm3510_tuner_cmd(st,bc,n,a);
476
477 return -EINVAL;
478}
479
480static int bcm3510_set_frontend(struct dvb_frontend* fe,
481 struct dvb_frontend_parameters *p)
482{
483 struct bcm3510_state* st = fe->demodulator_priv;
484 struct bcm3510_hab_cmd_ext_acquire cmd;
485 struct bcm3510_hab_cmd_bert_control bert;
486 int ret;
487
488 memset(&cmd,0,sizeof(cmd));
489 switch (p->u.vsb.modulation) {
490 case QAM_256:
491 cmd.ACQUIRE0.MODE = 0x1;
492 cmd.ACQUIRE1.SYM_RATE = 0x1;
493 cmd.ACQUIRE1.IF_FREQ = 0x1;
494 break;
495 case QAM_64:
496 cmd.ACQUIRE0.MODE = 0x2;
497 cmd.ACQUIRE1.SYM_RATE = 0x2;
498 cmd.ACQUIRE1.IF_FREQ = 0x1;
499 break;
500/* case QAM_256:
501 cmd.ACQUIRE0.MODE = 0x3;
502 break;
503 case QAM_128:
504 cmd.ACQUIRE0.MODE = 0x4;
505 break;
506 case QAM_64:
507 cmd.ACQUIRE0.MODE = 0x5;
508 break;
509 case QAM_32:
510 cmd.ACQUIRE0.MODE = 0x6;
511 break;
512 case QAM_16:
513 cmd.ACQUIRE0.MODE = 0x7;
514 break;*/
515 case VSB_8:
516 cmd.ACQUIRE0.MODE = 0x8;
517 cmd.ACQUIRE1.SYM_RATE = 0x0;
518 cmd.ACQUIRE1.IF_FREQ = 0x0;
519 break;
520 case VSB_16:
521 cmd.ACQUIRE0.MODE = 0x9;
522 cmd.ACQUIRE1.SYM_RATE = 0x0;
523 cmd.ACQUIRE1.IF_FREQ = 0x0;
524 default:
525 return -EINVAL;
526 };
527 cmd.ACQUIRE0.OFFSET = 0;
528 cmd.ACQUIRE0.NTSCSWEEP = 1;
529 cmd.ACQUIRE0.FA = 1;
530 cmd.ACQUIRE0.BW = 0;
531
532/* if (enableOffset) {
533 cmd.IF_OFFSET0 = xx;
534 cmd.IF_OFFSET1 = xx;
535
536 cmd.SYM_OFFSET0 = xx;
537 cmd.SYM_OFFSET1 = xx;
538 if (enableNtscSweep) {
539 cmd.NTSC_OFFSET0;
540 cmd.NTSC_OFFSET1;
541 }
542 } */
543 bcm3510_do_hab_cmd(st, CMD_ACQUIRE, MSGID_EXT_TUNER_ACQUIRE, (u8 *) &cmd, sizeof(cmd), NULL, 0);
544
545/* doing it with different MSGIDs, data book and source differs */
546 bert.BE = 0;
547 bert.unused = 0;
548 bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_CONTROL, (u8 *) &bert, sizeof(bert), NULL, 0);
549 bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_SET, (u8 *) &bert, sizeof(bert), NULL, 0);
550
551 bcm3510_bert_reset(st);
552
553 if ((ret = bcm3510_set_freq(st,p->frequency)) < 0)
554 return ret;
555
556 memset(&st->status1,0,sizeof(st->status1));
557 memset(&st->status2,0,sizeof(st->status2));
558 st->status_check_interval = 500;
559
560/* Give the AP some time */
561 msleep(200);
562
563 return 0;
564}
565
566static int bcm3510_sleep(struct dvb_frontend* fe)
567{
568 return 0;
569}
570
571static int bcm3510_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *s)
572{
573 s->min_delay_ms = 1000;
574 s->step_size = 0;
575 s->max_drift = 0;
576 return 0;
577}
578
579static void bcm3510_release(struct dvb_frontend* fe)
580{
581 struct bcm3510_state* state = fe->demodulator_priv;
582 kfree(state);
583}
584
585/* firmware download:
586 * firmware file is build up like this:
587 * 16bit addr, 16bit length, 8byte of length
588 */
589#define BCM3510_DEFAULT_FIRMWARE "dvb-fe-bcm3510-01.fw"
590
591static int bcm3510_write_ram(struct bcm3510_state *st, u16 addr, u8 *b, u16 len)
592{
593 int ret = 0,i;
594 bcm3510_register_value vH, vL,vD;
595
596 vH.MADRH_a9 = addr >> 8;
597 vL.MADRL_aa = addr;
598 if ((ret = bcm3510_writeB(st,0xa9,vH)) < 0) return ret;
599 if ((ret = bcm3510_writeB(st,0xaa,vL)) < 0) return ret;
600
601 for (i = 0; i < len; i++) {
602 vD.MDATA_ab = b[i];
603 if ((ret = bcm3510_writeB(st,0xab,vD)) < 0)
604 return ret;
605 }
606
607 return 0;
608}
609
610static int bcm3510_download_firmware(struct dvb_frontend* fe)
611{
612 struct bcm3510_state* st = fe->demodulator_priv;
613 const struct firmware *fw;
614 u16 addr,len;
615 u8 *b;
616 int ret,i;
617
618 deb_info("requesting firmware\n");
619 if ((ret = st->config->request_firmware(fe, &fw, BCM3510_DEFAULT_FIRMWARE)) < 0) {
620 err("could not load firmware (%s): %d",BCM3510_DEFAULT_FIRMWARE,ret);
621 return ret;
622 }
623 deb_info("got firmware: %d\n",fw->size);
624
625 b = fw->data;
626 for (i = 0; i < fw->size;) {
627 addr = le16_to_cpu( *( (u16 *)&b[i] ) );
628 len = le16_to_cpu( *( (u16 *)&b[i+2] ) );
629 deb_info("firmware chunk, addr: 0x%04x, len: 0x%04x, total length: 0x%04x\n",addr,len,fw->size);
630 if ((ret = bcm3510_write_ram(st,addr,&b[i+4],len)) < 0) {
631 err("firmware download failed: %d\n",ret);
632 return ret;
633 }
634 i += 4 + len;
635 }
636 release_firmware(fw);
637 deb_info("firmware download successfully completed\n");
638 return 0;
639}
640
641static int bcm3510_check_firmware_version(struct bcm3510_state *st)
642{
643 struct bcm3510_hab_cmd_get_version_info ver;
644 bcm3510_do_hab_cmd(st,CMD_GET_VERSION_INFO,MSGID_GET_VERSION_INFO,NULL,0,(u8*)&ver,sizeof(ver));
645
646 deb_info("Version information: 0x%02x 0x%02x 0x%02x 0x%02x\n",
647 ver.microcode_version, ver.script_version, ver.config_version, ver.demod_version);
648
649 if (ver.script_version == BCM3510_DEF_SCRIPT_VERSION &&
650 ver.config_version == BCM3510_DEF_CONFIG_VERSION &&
651 ver.demod_version == BCM3510_DEF_DEMOD_VERSION)
652 return 0;
653
654 deb_info("version check failed\n");
655 return -ENODEV;
656}
657
658/* (un)resetting the AP */
659static int bcm3510_reset(struct bcm3510_state *st)
660{
661 int ret;
662 unsigned long t;
663 bcm3510_register_value v;
664
665 bcm3510_readB(st,0xa0,&v); v.HCTL1_a0.RESET = 1;
666 if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
667 return ret;
668
669 t = jiffies + 3*HZ;
670 while (time_before(jiffies, t)) {
671 msleep(10);
672 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
673 return ret;
674
675 if (v.APSTAT1_a2.RESET)
676 return 0;
677 }
678 deb_info("reset timed out\n");
679 return -ETIMEDOUT;
680}
681
682static int bcm3510_clear_reset(struct bcm3510_state *st)
683{
684 bcm3510_register_value v;
685 int ret;
686 unsigned long t;
687
688 v.raw = 0;
689 if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
690 return ret;
691
692 t = jiffies + 3*HZ;
693 while (time_before(jiffies, t)) {
694 msleep(10);
695 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
696 return ret;
697
698 /* verify that reset is cleared */
699 if (!v.APSTAT1_a2.RESET)
700 return 0;
701 }
702 deb_info("reset clear timed out\n");
703 return -ETIMEDOUT;
704}
705
706static int bcm3510_init_cold(struct bcm3510_state *st)
707{
708 int ret;
709 bcm3510_register_value v;
710
711 /* read Acquisation Processor status register and check it is not in RUN mode */
712 if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
713 return ret;
714 if (v.APSTAT1_a2.RUN) {
715 deb_info("AP is already running - firmware already loaded.\n");
716 return 0;
717 }
718
719 deb_info("reset?\n");
720 if ((ret = bcm3510_reset(st)) < 0)
721 return ret;
722
723 deb_info("tristate?\n");
724 /* tri-state */
725 v.TSTCTL_2e.CTL = 0;
726 if ((ret = bcm3510_writeB(st,0x2e,v)) < 0)
727 return ret;
728
729 deb_info("firmware?\n");
730 if ((ret = bcm3510_download_firmware(&st->frontend)) < 0 ||
731 (ret = bcm3510_clear_reset(st)) < 0)
732 return ret;
733
734 /* anything left here to Let the acquisition processor begin execution at program counter 0000 ??? */
735
736 return 0;
737}
738
739static int bcm3510_init(struct dvb_frontend* fe)
740{
741 struct bcm3510_state* st = fe->demodulator_priv;
742 bcm3510_register_value j;
743 struct bcm3510_hab_cmd_set_agc c;
744 int ret;
745
746 if ((ret = bcm3510_readB(st,0xca,&j)) < 0)
747 return ret;
748
749 deb_info("JDEC: %02x\n",j.raw);
750
751 switch (j.JDEC_ca.JDEC) {
752 case JDEC_WAIT_AT_RAM:
753 deb_info("attempting to download firmware\n");
754 if ((ret = bcm3510_init_cold(st)) < 0)
755 return ret;
756 case JDEC_EEPROM_LOAD_WAIT: /* fall-through is wanted */
757 deb_info("firmware is loaded\n");
758 bcm3510_check_firmware_version(st);
759 break;
760 default:
761 return -ENODEV;
762 }
763
764 memset(&c,0,1);
765 c.SEL = 1;
766 bcm3510_do_hab_cmd(st,CMD_AUTO_PARAM,MSGID_SET_RF_AGC_SEL,(u8 *)&c,sizeof(c),NULL,0);
767
768 return 0;
769}
770
771
772static struct dvb_frontend_ops bcm3510_ops;
773
774struct dvb_frontend* bcm3510_attach(const struct bcm3510_config *config,
775 struct i2c_adapter *i2c)
776{
777 struct bcm3510_state* state = NULL;
778 int ret;
779 bcm3510_register_value v;
780
781 /* allocate memory for the internal state */
782 state = kmalloc(sizeof(struct bcm3510_state), GFP_KERNEL);
783 if (state == NULL)
784 goto error;
785 memset(state,0,sizeof(struct bcm3510_state));
786
787 /* setup the state */
788
789 state->config = config;
790 state->i2c = i2c;
791 memcpy(&state->ops, &bcm3510_ops, sizeof(struct dvb_frontend_ops));
792
793 /* create dvb_frontend */
794 state->frontend.ops = &state->ops;
795 state->frontend.demodulator_priv = state;
796
797 sema_init(&state->hab_sem, 1);
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
814error:
815 kfree(state);
816 return NULL;
817}
818EXPORT_SYMBOL(bcm3510_attach);
819
820static 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
851MODULE_DESCRIPTION("Broadcom BCM3510 ATSC (8VSB/16VSB & ITU J83 AnnexB FEC QAM64/256) demodulator driver");
852MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
853MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-01 18:42:59 -0500