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 1.20 2005/11/13 13:26:37 netchild Exp $
34 * $DragonFly: src/sys/dev/video/bktr/bktr_tuner.c,v 1.10 2007/10/03 19:27:08 swildner 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>
51 #include <sys/selinfo.h>
53 #include <bus/pci/pcivar.h>
55 #include <dev/video/meteor/ioctl_meteor.h>
56 #include <dev/video/bktr/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
57 #include <dev/video/bktr/bktr_reg.h>
58 #include <dev/video/bktr/bktr_tuner.h>
59 #include <dev/video/bktr/bktr_card.h>
60 #include <dev/video/bktr/bktr_core.h>
64 #if defined( TUNER_AFC )
65 #define AFC_DELAY 10000 /* 10 millisend delay */
67 #define AFC_FREQ_MINUS_125 0x00
68 #define AFC_FREQ_MINUS_62 0x01
69 #define AFC_FREQ_CENTERED 0x02
70 #define AFC_FREQ_PLUS_62 0x03
71 #define AFC_FREQ_PLUS_125 0x04
72 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */
73 #endif /* TUNER_AFC */
78 #define TTYPE_NTSC_J 2
84 #define TSA552x_CB_MSB (0x80)
85 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */
86 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */
87 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */
88 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */
89 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */
90 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/
91 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */
93 #define TSA552x_RADIO (TSA552x_CB_MSB | \
96 /* raise the charge pump voltage for fast tuning */
97 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \
103 /* lower the charge pump voltage for better residual oscillator FM */
104 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \
109 /* The control value for the ALPS TSCH5 Tuner */
110 #define TSCH5_FCONTROL 0x82
111 #define TSCH5_RADIO 0x86
113 /* The control value for the ALPS TSBH1 Tuner */
114 #define TSBH1_FCONTROL 0xce
117 static void mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq);
120 static const struct TUNER tuners[] = {
121 /* XXX FIXME: fill in the band-switch crosspoints */
123 { "<no>", /* the 'name' */
124 TTYPE_XXX, /* input type */
125 { 0x00, /* control byte for Tuner PLL */
129 { 0x00, 0x00 }, /* band-switch crosspoints */
130 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
133 { "Temic NTSC", /* the 'name' */
134 TTYPE_NTSC, /* input type */
135 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
139 { 0x00, 0x00}, /* band-switch crosspoints */
140 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
143 { "Temic PAL", /* the 'name' */
144 TTYPE_PAL, /* input type */
145 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
149 { 0x00, 0x00 }, /* band-switch crosspoints */
150 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
153 { "Temic SECAM", /* the 'name' */
154 TTYPE_SECAM, /* input type */
155 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
159 { 0x00, 0x00 }, /* band-switch crosspoints */
160 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
163 { "Philips NTSC", /* the 'name' */
164 TTYPE_NTSC, /* input type */
165 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
169 { 0x00, 0x00 }, /* band-switch crosspoints */
170 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
173 { "Philips PAL", /* the 'name' */
174 TTYPE_PAL, /* input type */
175 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
179 { 0x00, 0x00 }, /* band-switch crosspoints */
180 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
183 { "Philips SECAM", /* the 'name' */
184 TTYPE_SECAM, /* input type */
185 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
189 { 0x00, 0x00 }, /* band-switch crosspoints */
190 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */
193 { "Temic PAL I", /* the 'name' */
194 TTYPE_PAL, /* input type */
195 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
199 { 0x00, 0x00 }, /* band-switch crosspoints */
200 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
203 { "Philips PAL I", /* the 'name' */
204 TTYPE_PAL, /* input type */
205 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
209 { 0x00, 0x00 }, /* band-switch crosspoints */
210 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
212 /* PHILIPS_FR1236_NTSC */
213 { "Philips FR1236 NTSC FM", /* the 'name' */
214 TTYPE_NTSC, /* input type */
215 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
219 { 0x00, 0x00 }, /* band-switch crosspoints */
220 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
222 /* PHILIPS_FR1216_PAL */
223 { "Philips FR1216 PAL FM" , /* the 'name' */
224 TTYPE_PAL, /* input type */
225 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
229 { 0x00, 0x00 }, /* band-switch crosspoints */
230 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
232 /* PHILIPS_FR1236_SECAM */
233 { "Philips FR1236 SECAM FM", /* the 'name' */
234 TTYPE_SECAM, /* input type */
235 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
239 { 0x00, 0x00 }, /* band-switch crosspoints */
240 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */
242 /* ALPS TSCH5 NTSC */
243 { "ALPS TSCH5 NTSC FM", /* the 'name' */
244 TTYPE_NTSC, /* input type */
245 { TSCH5_FCONTROL, /* control byte for Tuner PLL */
249 { 0x00, 0x00 }, /* band-switch crosspoints */
250 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */
252 /* ALPS TSBH1 NTSC */
253 { "ALPS TSBH1 NTSC", /* the 'name' */
254 TTYPE_NTSC, /* input type */
255 { TSBH1_FCONTROL, /* control byte for Tuner PLL */
259 { 0x00, 0x00 }, /* band-switch crosspoints */
260 { 0x01, 0x02, 0x08, 0x00 } }, /* the band-switch values */
262 /* MT2032 Microtune */
263 { "MT2032", /* the 'name' */
264 TTYPE_PAL, /* input type */
265 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
269 { 0x00, 0x00 }, /* band-switch crosspoints */
270 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
272 /* LG TPI8PSB12P PAL */
273 { "LG TPI8PSB12P PAL", /* the 'name' */
274 TTYPE_PAL, /* input type */
275 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
279 { 0x00, 0x00 }, /* band-switch crosspoints */
280 { 0xa0, 0x90, 0x30, 0x8e } }, /* the band-switch values */
284 /* scaling factor for frequencies expressed as ints */
285 #define FREQFACTOR 16
289 * entry 0: MAX legal channel
290 * entry 1: IF frequency
291 * expressed as fi{mHz} * 16,
292 * eg 45.75mHz == 45.75 * 16 = 732
293 * entry 2: [place holder/future]
294 * entry 3: base of channel record 0
295 * entry 3 + (x*3): base of channel record 'x'
296 * entry LAST: NULL channel entry marking end of records
299 * int 0: base channel
300 * int 1: frequency of base channel,
301 * expressed as fb{mHz} * 16,
302 * int 2: offset frequency between channels,
303 * expressed as fo{mHz} * 16,
307 * North American Broadcast Channels:
309 * 2: 55.25 mHz - 4: 67.25 mHz
310 * 5: 77.25 mHz - 6: 83.25 mHz
311 * 7: 175.25 mHz - 13: 211.25 mHz
312 * 14: 471.25 mHz - 83: 885.25 mHz
317 static int nabcst[] = {
318 83, (int)( 45.75 * FREQFACTOR), 0,
319 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
320 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
321 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
322 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
328 * North American Cable Channels, IRC:
330 * 2: 55.25 mHz - 4: 67.25 mHz
331 * 5: 77.25 mHz - 6: 83.25 mHz
332 * 7: 175.25 mHz - 13: 211.25 mHz
333 * 14: 121.25 mHz - 22: 169.25 mHz
334 * 23: 217.25 mHz - 94: 643.25 mHz
335 * 95: 91.25 mHz - 99: 115.25 mHz
340 static int irccable[] = {
341 116, (int)( 45.75 * FREQFACTOR), 0,
342 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
343 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
344 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
345 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
346 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
347 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
348 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
354 * North American Cable Channels, HRC:
356 * 2: 54 mHz - 4: 66 mHz
357 * 5: 78 mHz - 6: 84 mHz
358 * 7: 174 mHz - 13: 210 mHz
359 * 14: 120 mHz - 22: 168 mHz
360 * 23: 216 mHz - 94: 642 mHz
361 * 95: 90 mHz - 99: 114 mHz
366 static int hrccable[] = {
367 116, (int)( 45.75 * FREQFACTOR), 0,
368 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
369 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
370 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
371 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
372 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
373 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
374 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
380 * Western European broadcast channels:
382 * (there are others that appear to vary between countries - rmt)
384 * here's the table Philips provides:
385 * caution, some of the offsets don't compute...
494 * Channels S21 - S41 are taken from
495 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html
519 * 121 3890 000 IFFREQ
522 static int weurope[] = {
523 121, (int)( 38.90 * FREQFACTOR), 0,
524 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
525 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
526 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
527 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
528 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
529 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
530 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
531 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
532 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
533 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
534 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
539 * Japanese Broadcast Channels:
541 * 1: 91.25MHz - 3: 103.25MHz
542 * 4: 171.25MHz - 7: 189.25MHz
543 * 8: 193.25MHz - 12: 217.25MHz (VHF)
544 * 13: 471.25MHz - 62: 765.25MHz (UHF)
551 #define IF_FREQ 45.75
552 static int jpnbcst[] = {
553 62, (int)(IF_FREQ * FREQFACTOR), 0,
554 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
555 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
556 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
557 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
564 * Japanese Cable Channels:
566 * 1: 91.25MHz - 3: 103.25MHz
567 * 4: 171.25MHz - 7: 189.25MHz
568 * 8: 193.25MHz - 12: 217.25MHz
569 * 13: 109.25MHz - 21: 157.25MHz
571 * 23: 223.25MHz - 63: 463.25MHz
576 #define IF_FREQ 45.75
577 static int jpncable[] = {
578 63, (int)(IF_FREQ * FREQFACTOR), 0,
579 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
580 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
581 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
582 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
583 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
584 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
591 * xUSSR Broadcast Channels:
593 * 1: 49.75MHz - 2: 59.25MHz
594 * 3: 77.25MHz - 5: 93.25MHz
595 * 6: 175.25MHz - 12: 223.25MHz
597 * 21: 471.25MHz - 34: 575.25MHz
598 * 35: 583.25MHz - 69: 855.25MHz
602 * 70: 111.25MHz - 77: 167.25MHz
603 * 78: 231.25MHz -107: 463.25MHz
607 #define IF_FREQ 38.90
608 static int xussr[] = {
609 107, (int)(IF_FREQ * FREQFACTOR), 0,
610 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
611 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
612 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
613 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
614 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
615 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
616 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR),
622 * Australian broadcast channels
625 #define IF_FREQ 38.90
626 static int australia[] = {
627 83, (int)(IF_FREQ * FREQFACTOR), 0,
628 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
629 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
630 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
631 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
632 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
633 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
640 * France broadcast channels
643 #define IF_FREQ 38.90
644 static int france[] = {
645 69, (int)(IF_FREQ * FREQFACTOR), 0,
646 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */
647 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */
648 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */
649 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */
650 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */
658 char name[BT848_MAX_CHNLSET_NAME_LEN];
662 {irccable, "cableirc"},
663 {hrccable, "cablehrc"},
664 {weurope, "weurope"},
665 {jpnbcst, "jpnbcst"},
666 {jpncable, "jpncable"},
668 {australia, "australia"},
673 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
674 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
675 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
677 frequency_lookup( bktr_ptr_t bktr, int channel )
681 /* check for "> MAX channel" */
683 if ( channel > TBL_CHNL )
686 /* search the table for data */
687 for ( x = 3; TBL_CHNL; x += 3 ) {
688 if ( channel >= TBL_CHNL ) {
689 return( TBL_BASE_FREQ +
690 ((channel - TBL_CHNL) * TBL_OFFSET) );
694 /* not found, must be below the MIN channel */
702 #define TBL_IF (bktr->format_params == BT848_IFORM_F_NTSCJ || \
703 bktr->format_params == BT848_IFORM_F_NTSCM ? \
704 nabcst[1] : weurope[1])
707 /* Initialise the tuner structures in the bktr_softc */
708 /* This is needed as the tuner details are no longer globally declared */
710 void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
711 if (tuner_type < Bt848_MAX_TUNER) {
712 bktr->card.tuner = &tuners[ tuner_type ];
714 bktr->card.tuner = NULL;
720 * Programming the tuner properly is quite complicated.
721 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
722 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of
723 * 87.5 Mhz to 108.0 Mhz.
725 * RF and IF. RF = radio frequencies, it is the transmitted signal.
726 * IF is the Intermediate Frequency (the offset from the base
727 * signal where the video, color, audio and NICAM signals are.
729 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz
730 * NICAM at 32.348 Mhz.
731 * Strangely enough, there is an IF (intermediate frequency) for
732 * FM Radio which is 10.7 Mhz.
734 * The tuner also works in Bands. Philips bands are
735 * FM radio band 87.50 to 108.00 MHz
736 * Low band 45.75 to 170.00 MHz
737 * Mid band 170.00 to 450.00 MHz
738 * High band 450.00 to 855.25 MHz
741 * Now we need to set the PLL on the tuner to the required freuqncy.
742 * It has a programmable divisor.
744 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
747 * For RADIO we want a different equation.
748 * freq IF is 10.70 MHz (so the data sheet tells me)
749 * N = (freq RF + freq IF) / step size
750 * The step size must be set to 50 khz (so the data sheet tells me)
751 * (note this is 50 kHz, the other things are in MHz)
752 * so we end up with N = 20x(freq RF + 10.7)
759 #define FM_RADIO_BAND 3
762 /* Check if these are correct for other than Philips PAL */
763 #define STATUSBIT_COLD 0x80
764 #define STATUSBIT_LOCK 0x40
765 #define STATUSBIT_TV 0x20
766 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */
767 #define STATUSBIT_ADC 0x07
770 * set the frequency of the tuner
771 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
772 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
773 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
777 tv_freq( bktr_ptr_t bktr, int frequency, int type )
779 const struct TUNER* tuner;
785 #if defined( TEST_TUNER_AFC )
786 int oldFrequency, afcDelta;
789 tuner = bktr->card.tuner;
793 if (tuner == &tuners[TUNER_MT2032]) {
794 mt2032_set_tv_freq(bktr, frequency);
797 if (type == TV_FREQUENCY) {
799 * select the band based on frequency
800 * XXX FIXME: get the cross-over points from the tuner struct
802 if ( frequency < (160 * FREQFACTOR ) )
803 band_select = LOW_BAND;
804 else if ( frequency < (454 * FREQFACTOR ) )
805 band_select = MID_BAND;
807 band_select = HIGH_BAND;
809 #if defined( TEST_TUNER_AFC )
810 if ( bktr->tuner.afc )
814 * N = 16 * { fRF(pc) + fIF(pc) }
815 * or N = 16* fRF(pc) + 16*fIF(pc) }
817 * pc is picture carrier, fRF & fIF are in MHz
819 * fortunatly, frequency is passed in as MHz * 16
820 * and the TBL_IF frequency is also stored in MHz * 16
822 N = frequency + TBL_IF;
824 /* set the address of the PLL */
825 addr = bktr->card.tuner_pllAddr;
826 control = tuner->pllControl[ band_select ];
827 band = tuner->bandAddrs[ band_select ];
829 if(!(band && control)) /* Don't try to set un- */
830 return(-1); /* supported modes. */
832 if ( frequency > bktr->tuner.frequency ) {
833 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
834 i2cWrite( bktr, addr, control, band );
837 i2cWrite( bktr, addr, control, band );
838 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
841 #if defined( TUNER_AFC )
842 if ( bktr->tuner.afc == TRUE ) {
843 #if defined( TEST_TUNER_AFC )
844 oldFrequency = frequency;
846 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
847 /* AFC failed, restore requested frequency */
848 N = frequency + TBL_IF;
849 #if defined( TEST_TUNER_AFC )
850 kprintf("%s: do_afc: failed to lock\n",
853 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
856 frequency = N - TBL_IF;
857 #if defined( TEST_TUNER_AFC )
858 kprintf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
859 afcDelta = frequency - oldFrequency;
860 kprintf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
863 #endif /* TUNER_AFC */
865 bktr->tuner.frequency = frequency;
868 if ( type == FM_RADIO_FREQUENCY ) {
869 band_select = FM_RADIO_BAND;
872 * N = { fRF(pc) + fIF(pc) }/step_size
873 * The step size is 50kHz for FM radio.
874 * (eg after 102.35MHz comes 102.40 MHz)
875 * fIF is 10.7 MHz (as detailed in the specs)
877 * frequency is passed in as MHz * 100
879 * So, we have N = (frequency/100 + 10.70) /(50/1000)
881 N = (frequency + 1070)/5;
883 /* set the address of the PLL */
884 addr = bktr->card.tuner_pllAddr;
885 control = tuner->pllControl[ band_select ];
886 band = tuner->bandAddrs[ band_select ];
888 if(!(band && control)) /* Don't try to set un- */
889 return(-1); /* supported modes. */
891 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
892 * the ioctls RADIO_SETMODE
893 * and RADIO_GETMODE */
895 i2cWrite( bktr, addr, control, band );
896 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
898 bktr->tuner.frequency = (N * 5) - 1070;
909 #if defined( TUNER_AFC )
914 do_afc( bktr_ptr_t bktr, int addr, int frequency )
920 origFrequency = frequency;
922 /* wait for first setting to take effect */
923 tsleep( BKTR_SLEEP, 0, "tuning", hz/8 );
925 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
928 #if defined( TEST_TUNER_AFC )
929 kprintf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
931 for ( step = 0; step < AFC_MAX_STEP; ++step ) {
932 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
934 if ( !(status & 0x40) ) {
935 #if defined( TEST_TUNER_AFC )
936 kprintf( "%s: no lock!\n", bktr_name(bktr) );
941 switch( status & AFC_BITS ) {
942 case AFC_FREQ_CENTERED:
943 #if defined( TEST_TUNER_AFC )
944 kprintf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
948 case AFC_FREQ_MINUS_125:
949 case AFC_FREQ_MINUS_62:
950 #if defined( TEST_TUNER_AFC )
951 kprintf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
956 case AFC_FREQ_PLUS_62:
957 case AFC_FREQ_PLUS_125:
958 #if defined( TEST_TUNER_AFC )
959 kprintf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
965 i2cWrite( bktr, addr,
966 (frequency>>8) & 0x7f, frequency & 0xff );
971 i2cWrite( bktr, addr,
972 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
976 #endif /* TUNER_AFC */
981 * Get the Tuner status and signal strength
983 int get_tuner_status( bktr_ptr_t bktr ) {
984 if (bktr->card.tuner == &tuners[TUNER_MT2032])
986 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
990 * set the channel of the tuner
993 tv_channel( bktr_ptr_t bktr, int channel )
997 /* calculate the frequency according to tuner type */
998 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
1001 /* set the new frequency */
1002 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 )
1005 /* OK to update records */
1006 return( (bktr->tuner.channel = channel) );
1010 * get channelset name
1013 tuner_getchnlset(struct bktr_chnlset *chnlset)
1015 if (( chnlset->index < CHNLSET_MIN ) ||
1016 ( chnlset->index > CHNLSET_MAX ))
1019 memcpy(&chnlset->name, &freqTable[chnlset->index].name,
1020 BT848_MAX_CHNLSET_NAME_LEN);
1022 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1029 #define TDA9887_ADDR 0x86
1032 TDA9887_init(bktr_ptr_t bktr, int output2_enable)
1034 u_char addr = TDA9887_ADDR;
1036 i2cWrite(bktr, addr, 0, output2_enable ? 0x50 : 0xd0);
1037 i2cWrite(bktr, addr, 1, 0x6e); /* takeover point / de-emphasis */
1039 /* PAL BG: 0x09 PAL I: 0x0a NTSC: 0x04 */
1041 i2cWrite(bktr, addr, 2, 0x04);
1043 i2cWrite(bktr, addr, 2, 0x09);
1050 #define MT2032_OPTIMIZE_VCO 1
1052 /* holds the value of XOGC register after init */
1053 static int MT2032_XOGC = 4;
1055 /* card.tuner_pllAddr not set during init */
1056 #define MT2032_ADDR 0xc0
1059 #define MT2032_ADDR (bktr->card.tuner_pllAddr)
1063 _MT2032_GetRegister(bktr_ptr_t bktr, u_char regNum)
1067 if (i2cWrite(bktr, MT2032_ADDR, regNum, -1) == -1) {
1069 kprintf("%s: MT2032 write failed (i2c addr %#x)\n",
1070 bktr_name(bktr), MT2032_ADDR);
1073 if ((ch = i2cRead(bktr, MT2032_ADDR + 1)) == -1) {
1075 kprintf("%s: MT2032 get register %d failed\n",
1076 bktr_name(bktr), regNum);
1083 _MT2032_SetRegister(bktr_ptr_t bktr, u_char regNum, u_char data)
1085 i2cWrite(bktr, MT2032_ADDR, regNum, data);
1088 #define MT2032_GetRegister(r) _MT2032_GetRegister(bktr,r)
1089 #define MT2032_SetRegister(r,d) _MT2032_SetRegister(bktr,r,d)
1093 mt2032_init(bktr_ptr_t bktr)
1100 TDA9887_init(bktr, 0);
1102 for (i = 0; i < 21; i++) {
1103 if ((x = MT2032_GetRegister(i)) == -1)
1110 kprintf("%s: MT2032: Companycode=%02x%02x Part=%02x Revision=%02x\n",
1112 rdbuf[0x11], rdbuf[0x12], rdbuf[0x13], rdbuf[0x14]);
1113 if (rdbuf[0x13] != 4) {
1114 kprintf("%s: MT2032 not found or unknown type\n", bktr_name(bktr));
1118 /* Initialize Registers per spec. */
1119 MT2032_SetRegister(2, 0xff);
1120 MT2032_SetRegister(3, 0x0f);
1121 MT2032_SetRegister(4, 0x1f);
1122 MT2032_SetRegister(6, 0xe4);
1123 MT2032_SetRegister(7, 0x8f);
1124 MT2032_SetRegister(8, 0xc3);
1125 MT2032_SetRegister(9, 0x4e);
1126 MT2032_SetRegister(10, 0xec);
1127 MT2032_SetRegister(13, 0x32);
1129 /* Adjust XOGC (register 7), wait for XOK */
1133 xok = MT2032_GetRegister(0x0e) & 0x01;
1139 xogc = 4; /* min. 4 per spec */
1142 MT2032_SetRegister(7, 0x88 + xogc);
1145 TDA9887_init(bktr, 1);
1153 MT2032_SpurCheck(int f1, int f2, int spectrum_from, int spectrum_to)
1157 f1 = f1 / 1000; /* scale to kHz to avoid 32bit overflows */
1159 spectrum_from /= 1000;
1160 spectrum_to /= 1000;
1168 if ((f > spectrum_from) && (f < spectrum_to)) {
1171 } while ((f > (f2 - spectrum_to)) || (n2 > -5));
1190 int fref, lo1, lo1n, lo1a, s, sel;
1191 int lo1freq, desired_lo1, desired_lo2, lo2, lo2n, lo2a,
1195 fref = 5250 * 1000; /* 5.25MHz */
1197 /* per spec 2.3.1 */
1198 desired_lo1 = rfin + if1;
1199 lo1 = (2 * (desired_lo1 / 1000) + (fref / 1000)) / (2 * fref / 1000);
1200 lo1freq = lo1 * fref;
1201 desired_lo2 = lo1freq - rfin - if2;
1203 /* per spec 2.3.2 */
1204 for (nLO1adjust = 1; nLO1adjust < 3; nLO1adjust++) {
1205 if (!MT2032_SpurCheck(lo1freq, desired_lo2, spectrum_from, spectrum_to)) {
1208 if (lo1freq < desired_lo1) {
1214 lo1freq = lo1 * fref;
1215 desired_lo2 = lo1freq - rfin - if2;
1218 /* per spec 2.3.3 */
1219 s = lo1freq / 1000 / 1000;
1221 if (MT2032_OPTIMIZE_VCO) {
1224 } else if (s > 1720) {
1226 } else if (s > 1530) {
1228 } else if (s > 1370) {
1236 } else if (s > 1617) {
1238 } else if (s > 1449) {
1240 } else if (s > 1291) {
1249 /* per spec 2.3.4 */
1251 lo1a = lo1 - (lo1n * 8);
1252 lo2 = desired_lo2 / fref;
1254 lo2a = lo2 - (lo2n * 8);
1255 /* scale to fit in 32bit arith */
1256 lo2num = ((desired_lo2 / 1000) % (fref / 1000)) * 3780 / (fref / 1000);
1257 lo2freq = (lo2a + 8 * lo2n) * fref + lo2num * (fref / 1000) / 3780 * 1000;
1259 if (lo1a < 0 || lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a < 0 ||
1260 lo2a > 7 || lo2n < 17 || lo2n > 30) {
1261 kprintf("MT2032: parameter out of range\n");
1264 /* set up MT2032 register map for transfer over i2c */
1266 buf[1] = lo1a | (sel << 4);
1267 buf[2] = 0x86; /* LOGC */
1268 buf[3] = 0x0f; /* reserved */
1270 buf[5] = (lo2n - 1) | (lo2a << 5);
1271 if (rfin < 400 * 1000 * 1000) {
1274 buf[6] = 0xf4; /* set PKEN per rev 1.2 */
1278 buf[8] = 0xc3; /* reserved */
1279 buf[9] = 0x4e; /* reserved */
1280 buf[10] = 0xec; /* reserved */
1281 buf[11] = (lo2num & 0xff);
1282 buf[12] = (lo2num >> 8) | 0x80; /* Lo2RST */
1288 MT2032_CheckLOLock(bktr_ptr_t bktr)
1291 for (t = 0; t < 10; t++) {
1292 lock = MT2032_GetRegister(0x0e) & 0x06;
1302 MT2032_OptimizeVCO(bktr_ptr_t bktr, int sel, int lock)
1306 tad1 = MT2032_GetRegister(0x0f) & 0x07;
1327 lo1a = MT2032_GetRegister(0x01) & 0x07;
1328 MT2032_SetRegister(0x01, lo1a | (sel << 4));
1329 lock = MT2032_CheckLOLock(bktr);
1334 MT2032_SetIFFreq(bktr_ptr_t bktr, int rfin, int if1, int if2, int from, int to)
1337 int lint_try, sel, lock = 0;
1339 if (MT2032_ComputeFreq(rfin, if1, if2, from, to, &buf[0], &sel, MT2032_XOGC) == -1)
1342 TDA9887_init(bktr, 0);
1344 /* send only the relevant registers per Rev. 1.2 */
1345 MT2032_SetRegister(0, buf[0x00]);
1346 MT2032_SetRegister(1, buf[0x01]);
1347 MT2032_SetRegister(2, buf[0x02]);
1349 MT2032_SetRegister(5, buf[0x05]);
1350 MT2032_SetRegister(6, buf[0x06]);
1351 MT2032_SetRegister(7, buf[0x07]);
1353 MT2032_SetRegister(11, buf[0x0B]);
1354 MT2032_SetRegister(12, buf[0x0C]);
1356 /* wait for PLLs to lock (per manual), retry LINT if not. */
1357 for (lint_try = 0; lint_try < 2; lint_try++) {
1358 lock = MT2032_CheckLOLock(bktr);
1360 if (MT2032_OPTIMIZE_VCO) {
1361 lock = MT2032_OptimizeVCO(bktr, sel, lock);
1366 /* set LINT to re-init PLLs */
1367 MT2032_SetRegister(7, 0x80 + 8 + MT2032_XOGC);
1369 MT2032_SetRegister(7, 8 + MT2032_XOGC);
1372 kprintf("%s: PLL didn't lock\n", bktr_name(bktr));
1374 MT2032_SetRegister(2, 0x20);
1376 TDA9887_init(bktr, 1);
1381 mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq)
1396 if (MT2032_SetIFFreq(bktr, freq*62500 /* freq*1000*1000/16 */,
1397 1090*1000*1000, if2, from, to) == 0) {
1398 bktr->tuner.frequency = freq;
1399 stat = MT2032_GetRegister(0x0e);
1400 tad = MT2032_GetRegister(0x0f);
1402 kprintf("%s: frequency set to %d, st = %#x, tad = %#x\n",
1403 bktr_name(bktr), freq*62500, stat, tad);