2 * 1. Redistributions of source code must retain the
3 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Amancio Hasty and
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
33 * $FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.18 2005/01/23 07:13:09 julian Exp
34 * $DragonFly: src/sys/dev/video/bktr/bktr_tuner.c,v 1.7 2005/03/12 11:35:27 corecode Exp $
39 * This is part of the Driver for Video Capture Cards (Frame grabbers)
40 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
42 * Copyright Roger Hardiman and Amancio Hasty.
44 * bktr_tuner : This deals with controlling the tuner fitted to TV cards.
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/vnode.h>
52 #include <bus/pci/pcivar.h>
54 #include <machine/bus_memio.h> /* for bus space */
55 #include <machine/bus.h>
58 #include <dev/video/meteor/ioctl_meteor.h>
59 #include <dev/video/bktr/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
60 #include <dev/video/bktr/bktr_reg.h>
61 #include <dev/video/bktr/bktr_tuner.h>
62 #include <dev/video/bktr/bktr_card.h>
63 #include <dev/video/bktr/bktr_core.h>
67 #if defined( TUNER_AFC )
68 #define AFC_DELAY 10000 /* 10 millisend delay */
70 #define AFC_FREQ_MINUS_125 0x00
71 #define AFC_FREQ_MINUS_62 0x01
72 #define AFC_FREQ_CENTERED 0x02
73 #define AFC_FREQ_PLUS_62 0x03
74 #define AFC_FREQ_PLUS_125 0x04
75 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */
76 #endif /* TUNER_AFC */
81 #define TTYPE_NTSC_J 2
87 #define TSA552x_CB_MSB (0x80)
88 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */
89 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */
90 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */
91 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */
92 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */
93 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/
94 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */
96 #define TSA552x_RADIO (TSA552x_CB_MSB | \
99 /* raise the charge pump voltage for fast tuning */
100 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \
106 /* lower the charge pump voltage for better residual oscillator FM */
107 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \
112 /* The control value for the ALPS TSCH5 Tuner */
113 #define TSCH5_FCONTROL 0x82
114 #define TSCH5_RADIO 0x86
116 /* The control value for the ALPS TSBH1 Tuner */
117 #define TSBH1_FCONTROL 0xce
120 static void mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq);
123 static const struct TUNER tuners[] = {
124 /* XXX FIXME: fill in the band-switch crosspoints */
126 { "<no>", /* the 'name' */
127 TTYPE_XXX, /* input type */
128 { 0x00, /* control byte for Tuner PLL */
132 { 0x00, 0x00 }, /* band-switch crosspoints */
133 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
136 { "Temic NTSC", /* the 'name' */
137 TTYPE_NTSC, /* input type */
138 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
142 { 0x00, 0x00}, /* band-switch crosspoints */
143 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
146 { "Temic PAL", /* the 'name' */
147 TTYPE_PAL, /* input type */
148 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
152 { 0x00, 0x00 }, /* band-switch crosspoints */
153 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
156 { "Temic SECAM", /* the 'name' */
157 TTYPE_SECAM, /* input type */
158 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
162 { 0x00, 0x00 }, /* band-switch crosspoints */
163 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
166 { "Philips NTSC", /* the 'name' */
167 TTYPE_NTSC, /* input type */
168 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
172 { 0x00, 0x00 }, /* band-switch crosspoints */
173 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
176 { "Philips PAL", /* the 'name' */
177 TTYPE_PAL, /* input type */
178 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
182 { 0x00, 0x00 }, /* band-switch crosspoints */
183 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
186 { "Philips SECAM", /* the 'name' */
187 TTYPE_SECAM, /* input type */
188 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
192 { 0x00, 0x00 }, /* band-switch crosspoints */
193 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */
196 { "Temic PAL I", /* the 'name' */
197 TTYPE_PAL, /* input type */
198 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
202 { 0x00, 0x00 }, /* band-switch crosspoints */
203 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
206 { "Philips PAL I", /* the 'name' */
207 TTYPE_PAL, /* input type */
208 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
212 { 0x00, 0x00 }, /* band-switch crosspoints */
213 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
215 /* PHILIPS_FR1236_NTSC */
216 { "Philips FR1236 NTSC FM", /* the 'name' */
217 TTYPE_NTSC, /* input type */
218 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
222 { 0x00, 0x00 }, /* band-switch crosspoints */
223 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
225 /* PHILIPS_FR1216_PAL */
226 { "Philips FR1216 PAL FM" , /* the 'name' */
227 TTYPE_PAL, /* input type */
228 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
232 { 0x00, 0x00 }, /* band-switch crosspoints */
233 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
235 /* PHILIPS_FR1236_SECAM */
236 { "Philips FR1236 SECAM FM", /* the 'name' */
237 TTYPE_SECAM, /* input type */
238 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
242 { 0x00, 0x00 }, /* band-switch crosspoints */
243 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */
245 /* ALPS TSCH5 NTSC */
246 { "ALPS TSCH5 NTSC FM", /* the 'name' */
247 TTYPE_NTSC, /* input type */
248 { TSCH5_FCONTROL, /* control byte for Tuner PLL */
252 { 0x00, 0x00 }, /* band-switch crosspoints */
253 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */
255 /* ALPS TSBH1 NTSC */
256 { "ALPS TSBH1 NTSC", /* the 'name' */
257 TTYPE_NTSC, /* input type */
258 { TSBH1_FCONTROL, /* control byte for Tuner PLL */
262 { 0x00, 0x00 }, /* band-switch crosspoints */
263 { 0x01, 0x02, 0x08, 0x00 } }, /* the band-switch values */
265 /* MT2032 Microtune */
266 { "MT2032", /* the 'name' */
267 TTYPE_PAL, /* input type */
268 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
272 { 0x00, 0x00 }, /* band-switch crosspoints */
273 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
277 /* scaling factor for frequencies expressed as ints */
278 #define FREQFACTOR 16
282 * entry 0: MAX legal channel
283 * entry 1: IF frequency
284 * expressed as fi{mHz} * 16,
285 * eg 45.75mHz == 45.75 * 16 = 732
286 * entry 2: [place holder/future]
287 * entry 3: base of channel record 0
288 * entry 3 + (x*3): base of channel record 'x'
289 * entry LAST: NULL channel entry marking end of records
292 * int 0: base channel
293 * int 1: frequency of base channel,
294 * expressed as fb{mHz} * 16,
295 * int 2: offset frequency between channels,
296 * expressed as fo{mHz} * 16,
300 * North American Broadcast Channels:
302 * 2: 55.25 mHz - 4: 67.25 mHz
303 * 5: 77.25 mHz - 6: 83.25 mHz
304 * 7: 175.25 mHz - 13: 211.25 mHz
305 * 14: 471.25 mHz - 83: 885.25 mHz
310 static int nabcst[] = {
311 83, (int)( 45.75 * FREQFACTOR), 0,
312 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
313 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
314 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
315 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
321 * North American Cable Channels, IRC:
323 * 2: 55.25 mHz - 4: 67.25 mHz
324 * 5: 77.25 mHz - 6: 83.25 mHz
325 * 7: 175.25 mHz - 13: 211.25 mHz
326 * 14: 121.25 mHz - 22: 169.25 mHz
327 * 23: 217.25 mHz - 94: 643.25 mHz
328 * 95: 91.25 mHz - 99: 115.25 mHz
333 static int irccable[] = {
334 116, (int)( 45.75 * FREQFACTOR), 0,
335 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
336 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
337 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
338 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
339 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
340 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
341 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
347 * North American Cable Channels, HRC:
349 * 2: 54 mHz - 4: 66 mHz
350 * 5: 78 mHz - 6: 84 mHz
351 * 7: 174 mHz - 13: 210 mHz
352 * 14: 120 mHz - 22: 168 mHz
353 * 23: 216 mHz - 94: 642 mHz
354 * 95: 90 mHz - 99: 114 mHz
359 static int hrccable[] = {
360 116, (int)( 45.75 * FREQFACTOR), 0,
361 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
362 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
363 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
364 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
365 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
366 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
367 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
373 * Western European broadcast channels:
375 * (there are others that appear to vary between countries - rmt)
377 * here's the table Philips provides:
378 * caution, some of the offsets don't compute...
487 * Channels S21 - S41 are taken from
488 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html
512 * 121 3890 000 IFFREQ
515 static int weurope[] = {
516 121, (int)( 38.90 * FREQFACTOR), 0,
517 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
518 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
519 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
520 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
521 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
522 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
523 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
524 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
525 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
526 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
527 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
532 * Japanese Broadcast Channels:
534 * 1: 91.25MHz - 3: 103.25MHz
535 * 4: 171.25MHz - 7: 189.25MHz
536 * 8: 193.25MHz - 12: 217.25MHz (VHF)
537 * 13: 471.25MHz - 62: 765.25MHz (UHF)
544 #define IF_FREQ 45.75
545 static int jpnbcst[] = {
546 62, (int)(IF_FREQ * FREQFACTOR), 0,
547 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
548 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
549 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
550 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
557 * Japanese Cable Channels:
559 * 1: 91.25MHz - 3: 103.25MHz
560 * 4: 171.25MHz - 7: 189.25MHz
561 * 8: 193.25MHz - 12: 217.25MHz
562 * 13: 109.25MHz - 21: 157.25MHz
564 * 23: 223.25MHz - 63: 463.25MHz
569 #define IF_FREQ 45.75
570 static int jpncable[] = {
571 63, (int)(IF_FREQ * FREQFACTOR), 0,
572 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
573 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
574 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
575 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
576 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
577 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
584 * xUSSR Broadcast Channels:
586 * 1: 49.75MHz - 2: 59.25MHz
587 * 3: 77.25MHz - 5: 93.25MHz
588 * 6: 175.25MHz - 12: 223.25MHz
590 * 21: 471.25MHz - 34: 575.25MHz
591 * 35: 583.25MHz - 69: 855.25MHz
595 * 70: 111.25MHz - 77: 167.25MHz
596 * 78: 231.25MHz -107: 463.25MHz
600 #define IF_FREQ 38.90
601 static int xussr[] = {
602 107, (int)(IF_FREQ * FREQFACTOR), 0,
603 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
604 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
605 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
606 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
607 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
608 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
609 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR),
615 * Australian broadcast channels
618 #define IF_FREQ 38.90
619 static int australia[] = {
620 83, (int)(IF_FREQ * FREQFACTOR), 0,
621 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
622 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
623 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
624 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
625 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
626 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
633 * France broadcast channels
636 #define IF_FREQ 38.90
637 static int france[] = {
638 69, (int)(IF_FREQ * FREQFACTOR), 0,
639 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */
640 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */
641 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */
642 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */
643 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */
651 char name[BT848_MAX_CHNLSET_NAME_LEN];
655 {irccable, "cableirc"},
656 {hrccable, "cablehrc"},
657 {weurope, "weurope"},
658 {jpnbcst, "jpnbcst"},
659 {jpncable, "jpncable"},
661 {australia, "australia"},
666 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
667 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
668 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
670 frequency_lookup( bktr_ptr_t bktr, int channel )
674 /* check for "> MAX channel" */
676 if ( channel > TBL_CHNL )
679 /* search the table for data */
680 for ( x = 3; TBL_CHNL; x += 3 ) {
681 if ( channel >= TBL_CHNL ) {
682 return( TBL_BASE_FREQ +
683 ((channel - TBL_CHNL) * TBL_OFFSET) );
687 /* not found, must be below the MIN channel */
695 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ]
698 /* Initialise the tuner structures in the bktr_softc */
699 /* This is needed as the tuner details are no longer globally declared */
701 void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
702 if (tuner_type < Bt848_MAX_TUNER) {
703 bktr->card.tuner = &tuners[ tuner_type ];
705 bktr->card.tuner = NULL;
711 * Programming the tuner properly is quite complicated.
712 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
713 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of
714 * 87.5 Mhz to 108.0 Mhz.
716 * RF and IF. RF = radio frequencies, it is the transmitted signal.
717 * IF is the Intermediate Frequency (the offset from the base
718 * signal where the video, color, audio and NICAM signals are.
720 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz
721 * NICAM at 32.348 Mhz.
722 * Strangely enough, there is an IF (intermediate frequency) for
723 * FM Radio which is 10.7 Mhz.
725 * The tuner also works in Bands. Philips bands are
726 * FM radio band 87.50 to 108.00 MHz
727 * Low band 45.75 to 170.00 MHz
728 * Mid band 170.00 to 450.00 MHz
729 * High band 450.00 to 855.25 MHz
732 * Now we need to set the PLL on the tuner to the required freuqncy.
733 * It has a programmable divisor.
735 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
738 * For RADIO we want a different equation.
739 * freq IF is 10.70 MHz (so the data sheet tells me)
740 * N = (freq RF + freq IF) / step size
741 * The step size must be set to 50 khz (so the data sheet tells me)
742 * (note this is 50 kHz, the other things are in MHz)
743 * so we end up with N = 20x(freq RF + 10.7)
750 #define FM_RADIO_BAND 3
753 /* Check if these are correct for other than Philips PAL */
754 #define STATUSBIT_COLD 0x80
755 #define STATUSBIT_LOCK 0x40
756 #define STATUSBIT_TV 0x20
757 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */
758 #define STATUSBIT_ADC 0x07
761 * set the frequency of the tuner
762 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
763 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
764 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
768 tv_freq( bktr_ptr_t bktr, int frequency, int type )
770 const struct TUNER* tuner;
776 #if defined( TEST_TUNER_AFC )
777 int oldFrequency, afcDelta;
780 tuner = bktr->card.tuner;
784 if (tuner == &tuners[TUNER_MT2032]) {
785 mt2032_set_tv_freq(bktr, frequency);
788 if (type == TV_FREQUENCY) {
790 * select the band based on frequency
791 * XXX FIXME: get the cross-over points from the tuner struct
793 if ( frequency < (160 * FREQFACTOR ) )
794 band_select = LOW_BAND;
795 else if ( frequency < (454 * FREQFACTOR ) )
796 band_select = MID_BAND;
798 band_select = HIGH_BAND;
800 #if defined( TEST_TUNER_AFC )
801 if ( bktr->tuner.afc )
805 * N = 16 * { fRF(pc) + fIF(pc) }
806 * or N = 16* fRF(pc) + 16*fIF(pc) }
808 * pc is picture carrier, fRF & fIF are in MHz
810 * fortunatly, frequency is passed in as MHz * 16
811 * and the TBL_IF frequency is also stored in MHz * 16
813 N = frequency + TBL_IF;
815 /* set the address of the PLL */
816 addr = bktr->card.tuner_pllAddr;
817 control = tuner->pllControl[ band_select ];
818 band = tuner->bandAddrs[ band_select ];
820 if(!(band && control)) /* Don't try to set un- */
821 return(-1); /* supported modes. */
823 if ( frequency > bktr->tuner.frequency ) {
824 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
825 i2cWrite( bktr, addr, control, band );
828 i2cWrite( bktr, addr, control, band );
829 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
832 #if defined( TUNER_AFC )
833 if ( bktr->tuner.afc == TRUE ) {
834 #if defined( TEST_TUNER_AFC )
835 oldFrequency = frequency;
837 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
838 /* AFC failed, restore requested frequency */
839 N = frequency + TBL_IF;
840 #if defined( TEST_TUNER_AFC )
841 printf("%s: do_afc: failed to lock\n",
844 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
847 frequency = N - TBL_IF;
848 #if defined( TEST_TUNER_AFC )
849 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
850 afcDelta = frequency - oldFrequency;
851 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
854 #endif /* TUNER_AFC */
856 bktr->tuner.frequency = frequency;
859 if ( type == FM_RADIO_FREQUENCY ) {
860 band_select = FM_RADIO_BAND;
863 * N = { fRF(pc) + fIF(pc) }/step_size
864 * The step size is 50kHz for FM radio.
865 * (eg after 102.35MHz comes 102.40 MHz)
866 * fIF is 10.7 MHz (as detailed in the specs)
868 * frequency is passed in as MHz * 100
870 * So, we have N = (frequency/100 + 10.70) /(50/1000)
872 N = (frequency + 1070)/5;
874 /* set the address of the PLL */
875 addr = bktr->card.tuner_pllAddr;
876 control = tuner->pllControl[ band_select ];
877 band = tuner->bandAddrs[ band_select ];
879 if(!(band && control)) /* Don't try to set un- */
880 return(-1); /* supported modes. */
882 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
883 * the ioctls RADIO_SETMODE
884 * and RADIO_GETMODE */
886 i2cWrite( bktr, addr, control, band );
887 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
889 bktr->tuner.frequency = (N * 5) - 1070;
900 #if defined( TUNER_AFC )
905 do_afc( bktr_ptr_t bktr, int addr, int frequency )
911 origFrequency = frequency;
913 /* wait for first setting to take effect */
914 tsleep( BKTR_SLEEP, 0, "tuning", hz/8 );
916 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
919 #if defined( TEST_TUNER_AFC )
920 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
922 for ( step = 0; step < AFC_MAX_STEP; ++step ) {
923 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
925 if ( !(status & 0x40) ) {
926 #if defined( TEST_TUNER_AFC )
927 printf( "%s: no lock!\n", bktr_name(bktr) );
932 switch( status & AFC_BITS ) {
933 case AFC_FREQ_CENTERED:
934 #if defined( TEST_TUNER_AFC )
935 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
939 case AFC_FREQ_MINUS_125:
940 case AFC_FREQ_MINUS_62:
941 #if defined( TEST_TUNER_AFC )
942 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
947 case AFC_FREQ_PLUS_62:
948 case AFC_FREQ_PLUS_125:
949 #if defined( TEST_TUNER_AFC )
950 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
956 i2cWrite( bktr, addr,
957 (frequency>>8) & 0x7f, frequency & 0xff );
962 i2cWrite( bktr, addr,
963 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
967 #endif /* TUNER_AFC */
972 * Get the Tuner status and signal strength
974 int get_tuner_status( bktr_ptr_t bktr ) {
975 if (bktr->card.tuner == &tuners[TUNER_MT2032])
977 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
981 * set the channel of the tuner
984 tv_channel( bktr_ptr_t bktr, int channel )
988 /* calculate the frequency according to tuner type */
989 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
992 /* set the new frequency */
993 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 )
996 /* OK to update records */
997 return( (bktr->tuner.channel = channel) );
1001 * get channelset name
1004 tuner_getchnlset(struct bktr_chnlset *chnlset)
1006 if (( chnlset->index < CHNLSET_MIN ) ||
1007 ( chnlset->index > CHNLSET_MAX ))
1010 memcpy(&chnlset->name, &freqTable[chnlset->index].name,
1011 BT848_MAX_CHNLSET_NAME_LEN);
1013 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1020 #define TDA9887_ADDR 0x86
1023 TDA9887_init(bktr_ptr_t bktr, int output2_enable)
1025 u_char addr = TDA9887_ADDR;
1027 i2cWrite(bktr, addr, 0, output2_enable ? 0x50 : 0xd0);
1028 i2cWrite(bktr, addr, 1, 0x6e); /* takeover point / de-emphasis */
1030 /* PAL BG: 0x09 PAL I: 0x0a NTSC: 0x04 */
1032 i2cWrite(bktr, addr, 2, 0x04);
1034 i2cWrite(bktr, addr, 2, 0x09);
1041 #define MT2032_OPTIMIZE_VCO 1
1043 /* holds the value of XOGC register after init */
1044 static int MT2032_XOGC = 4;
1046 /* card.tuner_pllAddr not set during init */
1047 #define MT2032_ADDR 0xc0
1050 #define MT2032_ADDR (bktr->card.tuner_pllAddr)
1054 _MT2032_GetRegister(bktr_ptr_t bktr, u_char regNum)
1058 if (i2cWrite(bktr, MT2032_ADDR, regNum, -1) == -1) {
1060 printf("%s: MT2032 write failed (i2c addr %#x)\n",
1061 bktr_name(bktr), MT2032_ADDR);
1064 if ((ch = i2cRead(bktr, MT2032_ADDR + 1)) == -1) {
1066 printf("%s: MT2032 get register %d failed\n",
1067 bktr_name(bktr), regNum);
1074 _MT2032_SetRegister(bktr_ptr_t bktr, u_char regNum, u_char data)
1076 i2cWrite(bktr, MT2032_ADDR, regNum, data);
1079 #define MT2032_GetRegister(r) _MT2032_GetRegister(bktr,r)
1080 #define MT2032_SetRegister(r,d) _MT2032_SetRegister(bktr,r,d)
1084 mt2032_init(bktr_ptr_t bktr)
1091 TDA9887_init(bktr, 0);
1093 for (i = 0; i < 21; i++) {
1094 if ((x = MT2032_GetRegister(i)) == -1)
1101 printf("%s: MT2032: Companycode=%02x%02x Part=%02x Revision=%02x\n",
1103 rdbuf[0x11], rdbuf[0x12], rdbuf[0x13], rdbuf[0x14]);
1104 if (rdbuf[0x13] != 4) {
1105 printf("%s: MT2032 not found or unknown type\n", bktr_name(bktr));
1109 /* Initialize Registers per spec. */
1110 MT2032_SetRegister(2, 0xff);
1111 MT2032_SetRegister(3, 0x0f);
1112 MT2032_SetRegister(4, 0x1f);
1113 MT2032_SetRegister(6, 0xe4);
1114 MT2032_SetRegister(7, 0x8f);
1115 MT2032_SetRegister(8, 0xc3);
1116 MT2032_SetRegister(9, 0x4e);
1117 MT2032_SetRegister(10, 0xec);
1118 MT2032_SetRegister(13, 0x32);
1120 /* Adjust XOGC (register 7), wait for XOK */
1124 xok = MT2032_GetRegister(0x0e) & 0x01;
1130 xogc = 4; /* min. 4 per spec */
1133 MT2032_SetRegister(7, 0x88 + xogc);
1136 TDA9887_init(bktr, 1);
1144 MT2032_SpurCheck(int f1, int f2, int spectrum_from, int spectrum_to)
1148 f1 = f1 / 1000; /* scale to kHz to avoid 32bit overflows */
1150 spectrum_from /= 1000;
1151 spectrum_to /= 1000;
1159 if ((f > spectrum_from) && (f < spectrum_to)) {
1162 } while ((f > (f2 - spectrum_to)) || (n2 > -5));
1181 int fref, lo1, lo1n, lo1a, s, sel;
1182 int lo1freq, desired_lo1, desired_lo2, lo2, lo2n, lo2a,
1186 fref = 5250 * 1000; /* 5.25MHz */
1188 /* per spec 2.3.1 */
1189 desired_lo1 = rfin + if1;
1190 lo1 = (2 * (desired_lo1 / 1000) + (fref / 1000)) / (2 * fref / 1000);
1191 lo1freq = lo1 * fref;
1192 desired_lo2 = lo1freq - rfin - if2;
1194 /* per spec 2.3.2 */
1195 for (nLO1adjust = 1; nLO1adjust < 3; nLO1adjust++) {
1196 if (!MT2032_SpurCheck(lo1freq, desired_lo2, spectrum_from, spectrum_to)) {
1199 if (lo1freq < desired_lo1) {
1205 lo1freq = lo1 * fref;
1206 desired_lo2 = lo1freq - rfin - if2;
1209 /* per spec 2.3.3 */
1210 s = lo1freq / 1000 / 1000;
1212 if (MT2032_OPTIMIZE_VCO) {
1215 } else if (s > 1720) {
1217 } else if (s > 1530) {
1219 } else if (s > 1370) {
1227 } else if (s > 1617) {
1229 } else if (s > 1449) {
1231 } else if (s > 1291) {
1240 /* per spec 2.3.4 */
1242 lo1a = lo1 - (lo1n * 8);
1243 lo2 = desired_lo2 / fref;
1245 lo2a = lo2 - (lo2n * 8);
1246 /* scale to fit in 32bit arith */
1247 lo2num = ((desired_lo2 / 1000) % (fref / 1000)) * 3780 / (fref / 1000);
1248 lo2freq = (lo2a + 8 * lo2n) * fref + lo2num * (fref / 1000) / 3780 * 1000;
1250 if (lo1a < 0 || lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a < 0 ||
1251 lo2a > 7 || lo2n < 17 || lo2n > 30) {
1252 printf("MT2032: parameter out of range\n");
1255 /* set up MT2032 register map for transfer over i2c */
1257 buf[1] = lo1a | (sel << 4);
1258 buf[2] = 0x86; /* LOGC */
1259 buf[3] = 0x0f; /* reserved */
1261 buf[5] = (lo2n - 1) | (lo2a << 5);
1262 if (rfin < 400 * 1000 * 1000) {
1265 buf[6] = 0xf4; /* set PKEN per rev 1.2 */
1269 buf[8] = 0xc3; /* reserved */
1270 buf[9] = 0x4e; /* reserved */
1271 buf[10] = 0xec; /* reserved */
1272 buf[11] = (lo2num & 0xff);
1273 buf[12] = (lo2num >> 8) | 0x80; /* Lo2RST */
1279 MT2032_CheckLOLock(bktr_ptr_t bktr)
1282 for (t = 0; t < 10; t++) {
1283 lock = MT2032_GetRegister(0x0e) & 0x06;
1293 MT2032_OptimizeVCO(bktr_ptr_t bktr, int sel, int lock)
1297 tad1 = MT2032_GetRegister(0x0f) & 0x07;
1318 lo1a = MT2032_GetRegister(0x01) & 0x07;
1319 MT2032_SetRegister(0x01, lo1a | (sel << 4));
1320 lock = MT2032_CheckLOLock(bktr);
1325 MT2032_SetIFFreq(bktr_ptr_t bktr, int rfin, int if1, int if2, int from, int to)
1328 int lint_try, sel, lock = 0;
1330 if (MT2032_ComputeFreq(rfin, if1, if2, from, to, &buf[0], &sel, MT2032_XOGC) == -1)
1333 TDA9887_init(bktr, 0);
1335 /* send only the relevant registers per Rev. 1.2 */
1336 MT2032_SetRegister(0, buf[0x00]);
1337 MT2032_SetRegister(1, buf[0x01]);
1338 MT2032_SetRegister(2, buf[0x02]);
1340 MT2032_SetRegister(5, buf[0x05]);
1341 MT2032_SetRegister(6, buf[0x06]);
1342 MT2032_SetRegister(7, buf[0x07]);
1344 MT2032_SetRegister(11, buf[0x0B]);
1345 MT2032_SetRegister(12, buf[0x0C]);
1347 /* wait for PLLs to lock (per manual), retry LINT if not. */
1348 for (lint_try = 0; lint_try < 2; lint_try++) {
1349 lock = MT2032_CheckLOLock(bktr);
1351 if (MT2032_OPTIMIZE_VCO) {
1352 lock = MT2032_OptimizeVCO(bktr, sel, lock);
1357 /* set LINT to re-init PLLs */
1358 MT2032_SetRegister(7, 0x80 + 8 + MT2032_XOGC);
1360 MT2032_SetRegister(7, 8 + MT2032_XOGC);
1363 printf("%s: PLL didn't lock\n", bktr_name(bktr));
1365 MT2032_SetRegister(2, 0x20);
1367 TDA9887_init(bktr, 1);
1372 mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq)
1387 if (MT2032_SetIFFreq(bktr, freq*62500 /* freq*1000*1000/16 */,
1388 1090*1000*1000, if2, from, to) == 0) {
1389 bktr->tuner.frequency = freq;
1390 stat = MT2032_GetRegister(0x0e);
1391 tad = MT2032_GetRegister(0x0f);
1393 printf("%s: frequency set to %d, st = %#x, tad = %#x\n",
1394 bktr_name(bktr), freq*62500, stat, tad);