Bug Summary

File:dev/pci/bktr/bktr_tuner.c
Warning:line 905, column 8
Although the value stored to 'status' is used in the enclosing expression, the value is never actually read from 'status'

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name bktr_tuner.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -D CONFIG_DRM_AMD_DC_DCN3_0 -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /usr/obj/sys/arch/amd64/compile/GENERIC.MP/scan-build/2022-01-12-131800-47421-1 -x c /usr/src/sys/dev/pci/bktr/bktr_tuner.c
1/* $OpenBSD: bktr_tuner.c,v 1.10 2022/01/09 05:42:58 jsg Exp $ */
2/* $FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.9 2000/10/19 07:33:28 roger Exp $ */
3
4/*
5 * This is part of the Driver for Video Capture Cards (Frame grabbers)
6 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
7 * chipset.
8 * Copyright Roger Hardiman and Amancio Hasty.
9 *
10 * bktr_tuner : This deals with controlling the tuner fitted to TV cards.
11 *
12 */
13
14/*
15 * 1. Redistributions of source code must retain the
16 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
17 * All rights reserved.
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 * 3. All advertising materials mentioning features or use of this software
28 * must display the following acknowledgement:
29 * This product includes software developed by Amancio Hasty and
30 * Roger Hardiman
31 * 4. The name of the author may not be used to endorse or promote products
32 * derived from this software without specific prior written permission.
33 *
34 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
35 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
36 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
38 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
39 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
40 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
42 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
43 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
44 * POSSIBILITY OF SUCH DAMAGE.
45 */
46
47
48
49#include <sys/param.h>
50#include <sys/systm.h>
51#include <sys/kernel.h>
52#include <sys/vnode.h>
53
54#include <dev/ic/bt8xx.h> /* OpenBSD .h file location */
55#include <dev/pci/bktr/bktr_reg.h>
56#include <dev/pci/bktr/bktr_tuner.h>
57#include <dev/pci/bktr/bktr_core.h>
58
59#if defined( TUNER_AFC )
60#define AFC_DELAY10000 10000 /* 10 millisecond delay */
61#define AFC_BITS0x07 0x07
62#define AFC_FREQ_MINUS_1250x00 0x00
63#define AFC_FREQ_MINUS_620x01 0x01
64#define AFC_FREQ_CENTERED0x02 0x02
65#define AFC_FREQ_PLUS_620x03 0x03
66#define AFC_FREQ_PLUS_1250x04 0x04
67#define AFC_MAX_STEP(5 * 16) (5 * FREQFACTOR16) /* no more than 5 MHz */
68#endif /* TUNER_AFC */
69
70
71#define TTYPE_XXX0 0
72#define TTYPE_NTSC1 1
73#define TTYPE_NTSC_J2 2
74#define TTYPE_PAL3 3
75#define TTYPE_PAL_M4 4
76#define TTYPE_PAL_N5 5
77#define TTYPE_SECAM6 6
78
79#define TSA552x_CB_MSB(0x80) (0x80)
80#define TSA552x_CB_CP(1<<6) (1<<6) /* set this for fast tuning */
81#define TSA552x_CB_T2(1<<5) (1<<5) /* test mode - Normally set to 0 */
82#define TSA552x_CB_T1(1<<4) (1<<4) /* test mode - Normally set to 0 */
83#define TSA552x_CB_T0(1<<3) (1<<3) /* test mode - Normally set to 1 */
84#define TSA552x_CB_RSA(1<<2) (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */
85#define TSA552x_CB_RSB(1<<1) (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/
86#define TSA552x_CB_OS(1<<0) (1<<0) /* Set to 0 for normal operation */
87
88#define TSA552x_RADIO((0x80) | (1<<3)) (TSA552x_CB_MSB(0x80) | \
89 TSA552x_CB_T0(1<<3))
90
91/* raise the charge pump voltage for fast tuning */
92#define TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)) (TSA552x_CB_MSB(0x80) | \
93 TSA552x_CB_CP(1<<6) | \
94 TSA552x_CB_T0(1<<3) | \
95 TSA552x_CB_RSA(1<<2) | \
96 TSA552x_CB_RSB(1<<1))
97
98/* lower the charge pump voltage for better residual oscillator FM */
99#define TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)) (TSA552x_CB_MSB(0x80) | \
100 TSA552x_CB_T0(1<<3) | \
101 TSA552x_CB_RSA(1<<2) | \
102 TSA552x_CB_RSB(1<<1))
103
104/* The control value for the ALPS TSCH5 Tuner */
105#define TSCH5_FCONTROL0x82 0x82
106#define TSCH5_RADIO0x86 0x86
107
108/* The control value for the ALPS TSBH1 Tuner */
109#define TSBH1_FCONTROL0xce 0xce
110
111
112static const struct TUNER tuners[] = {
113/* XXX FIXME: fill in the band-switch crosspoints */
114 /* NO_TUNER */
115 { "<no>", /* the 'name' */
116 TTYPE_XXX0, /* input type */
117 { 0x00, /* control byte for Tuner PLL */
118 0x00,
119 0x00,
120 0x00 },
121 { 0x00, 0x00 }, /* band-switch crosspoints */
122 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
123
124 /* TEMIC_NTSC */
125 { "Temic NTSC", /* the 'name' */
126 TTYPE_NTSC1, /* input type */
127 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
128 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
129 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
130 0x00 },
131 { 0x00, 0x00}, /* band-switch crosspoints */
132 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
133
134 /* TEMIC_PAL */
135 { "Temic PAL", /* the 'name' */
136 TTYPE_PAL3, /* input type */
137 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
138 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
139 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
140 0x00 },
141 { 0x00, 0x00 }, /* band-switch crosspoints */
142 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
143
144 /* TEMIC_SECAM */
145 { "Temic SECAM", /* the 'name' */
146 TTYPE_SECAM6, /* input type */
147 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
148 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
149 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
150 0x00 },
151 { 0x00, 0x00 }, /* band-switch crosspoints */
152 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
153
154 /* PHILIPS_NTSC */
155 { "Philips NTSC", /* the 'name' */
156 TTYPE_NTSC1, /* input type */
157 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
158 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
159 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
160 0x00 },
161 { 0x00, 0x00 }, /* band-switch crosspoints */
162 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
163
164 /* PHILIPS_PAL */
165 { "Philips PAL", /* the 'name' */
166 TTYPE_PAL3, /* input type */
167 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
168 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
169 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
170 0x00 },
171 { 0x00, 0x00 }, /* band-switch crosspoints */
172 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
173
174 /* PHILIPS_SECAM */
175 { "Philips SECAM", /* the 'name' */
176 TTYPE_SECAM6, /* input type */
177 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
178 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
179 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
180 0x00 },
181 { 0x00, 0x00 }, /* band-switch crosspoints */
182 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */
183
184 /* TEMIC_PAL I */
185 { "Temic PAL I", /* the 'name' */
186 TTYPE_PAL3, /* input type */
187 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
188 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
189 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
190 0x00 },
191 { 0x00, 0x00 }, /* band-switch crosspoints */
192 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
193
194 /* PHILIPS_PALI */
195 { "Philips PAL I", /* the 'name' */
196 TTYPE_PAL3, /* input type */
197 { TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)), /* control byte for Tuner PLL */
198 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
199 TSA552x_SCONTROL((0x80) | (1<<3) | (1<<2) | (1<<1)),
200 0x00 },
201 { 0x00, 0x00 }, /* band-switch crosspoints */
202 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
203
204 /* PHILIPS_FR1236_NTSC */
205 { "Philips FR1236 NTSC FM", /* the 'name' */
206 TTYPE_NTSC1, /* input type */
207 { TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)), /* control byte for Tuner PLL */
208 TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)),
209 TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)),
210 TSA552x_RADIO((0x80) | (1<<3)) },
211 { 0x00, 0x00 }, /* band-switch crosspoints */
212 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
213
214 /* PHILIPS_FR1216_PAL */
215 { "Philips FR1216 PAL FM" , /* the 'name' */
216 TTYPE_PAL3, /* input type */
217 { TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)), /* control byte for Tuner PLL */
218 TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)),
219 TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)),
220 TSA552x_RADIO((0x80) | (1<<3)) },
221 { 0x00, 0x00 }, /* band-switch crosspoints */
222 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
223
224 /* PHILIPS_FR1236_SECAM */
225 { "Philips FR1236 SECAM FM", /* the 'name' */
226 TTYPE_SECAM6, /* input type */
227 { TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)), /* control byte for Tuner PLL */
228 TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)),
229 TSA552x_FCONTROL((0x80) | (1<<6) | (1<<3) | (1<<2) | (1<<
1)),
230 TSA552x_RADIO((0x80) | (1<<3)) },
231 { 0x00, 0x00 }, /* band-switch crosspoints */
232 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */
233
234 /* ALPS TSCH5 NTSC */
235 { "ALPS TSCH5 NTSC FM", /* the 'name' */
236 TTYPE_NTSC1, /* input type */
237 { TSCH5_FCONTROL0x82, /* control byte for Tuner PLL */
238 TSCH5_FCONTROL0x82,
239 TSCH5_FCONTROL0x82,
240 TSCH5_RADIO0x86 },
241 { 0x00, 0x00 }, /* band-switch crosspoints */
242 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */
243
244 /* ALPS TSBH1 NTSC */
245 { "ALPS TSBH1 NTSC", /* the 'name' */
246 TTYPE_NTSC1, /* input type */
247 { TSBH1_FCONTROL0xce, /* control byte for Tuner PLL */
248 TSBH1_FCONTROL0xce,
249 TSBH1_FCONTROL0xce,
250 0x00 },
251 { 0x00, 0x00 }, /* band-switch crosspoints */
252 { 0x01, 0x02, 0x08, 0x00 } }, /* the band-switch values */
253
254 /* Tivision TVF5533-MF NTSC */
255 { "Tivision TVF5533-MF NTSC", /* the 'name' */
256 TTYPE_NTSC1, /* input 'type' */
257 { TSBH1_FCONTROL0xce, /* ctr byte for Tuner PLL */
258 TSBH1_FCONTROL0xce,
259 TSBH1_FCONTROL0xce,
260 0x00 },
261 { 0x00, 0x00 }, /* band-switch crosspoints */
262 { 0x01, 0x02, 0x04, 0x00 } }, /* the band-switch values */
263};
264
265
266/* scaling factor for frequencies expressed as ints */
267#define FREQFACTOR16 16
268
269/*
270 * Format:
271 * entry 0: MAX legal channel
272 * entry 1: IF frequency
273 * expressed as fi{mHz} * 16,
274 * eg 45.75mHz == 45.75 * 16 = 732
275 * entry 2: [place holder/future]
276 * entry 3: base of channel record 0
277 * entry 3 + (x*3): base of channel record 'x'
278 * entry LAST: NULL channel entry marking end of records
279 *
280 * Record:
281 * int 0: base channel
282 * int 1: frequency of base channel,
283 * expressed as fb{mHz} * 16,
284 * int 2: offset frequency between channels,
285 * expressed as fo{mHz} * 16,
286 */
287
288/*
289 * North American Broadcast Channels:
290 *
291 * 2: 55.25 mHz - 4: 67.25 mHz
292 * 5: 77.25 mHz - 6: 83.25 mHz
293 * 7: 175.25 mHz - 13: 211.25 mHz
294 * 14: 471.25 mHz - 83: 885.25 mHz
295 *
296 * IF freq: 45.75 mHz
297 */
298#define OFFSET 6.00
299static const int nabcst[] = {
300 83, (int)( 45.75 * FREQFACTOR16), 0,
301 14, (int)(471.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
302 7, (int)(175.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
303 5, (int)( 77.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
304 2, (int)( 55.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
305 0
306};
307#undef OFFSET
308
309/*
310 * North American Cable Channels, IRC:
311 *
312 * 2: 55.25 mHz - 4: 67.25 mHz
313 * 5: 77.25 mHz - 6: 83.25 mHz
314 * 7: 175.25 mHz - 13: 211.25 mHz
315 * 14: 121.25 mHz - 22: 169.25 mHz
316 * 23: 217.25 mHz - 94: 643.25 mHz
317 * 95: 91.25 mHz - 99: 115.25 mHz
318 *
319 * IF freq: 45.75 mHz
320 */
321#define OFFSET 6.00
322static const int irccable[] = {
323 116, (int)( 45.75 * FREQFACTOR16), 0,
324 100, (int)(649.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
325 95, (int)( 91.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
326 23, (int)(217.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
327 14, (int)(121.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
328 7, (int)(175.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
329 5, (int)( 77.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
330 2, (int)( 55.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
331 0
332};
333#undef OFFSET
334
335/*
336 * North American Cable Channels, HRC:
337 *
338 * 2: 54 mHz - 4: 66 mHz
339 * 5: 78 mHz - 6: 84 mHz
340 * 7: 174 mHz - 13: 210 mHz
341 * 14: 120 mHz - 22: 168 mHz
342 * 23: 216 mHz - 94: 642 mHz
343 * 95: 90 mHz - 99: 114 mHz
344 *
345 * IF freq: 45.75 mHz
346 */
347#define OFFSET 6.00
348static const int hrccable[] = {
349 116, (int)( 45.75 * FREQFACTOR16), 0,
350 100, (int)(648.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
351 95, (int)( 90.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
352 23, (int)(216.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
353 14, (int)(120.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
354 7, (int)(174.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
355 5, (int)( 78.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
356 2, (int)( 54.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
357 0
358};
359#undef OFFSET
360
361/*
362 * Western European broadcast channels:
363 *
364 * (there are others that appear to vary between countries - rmt)
365 *
366 * here's the table Philips provides:
367 * caution, some of the offsets don't compute...
368 *
369 * 1 4525 700 N21
370 *
371 * 2 4825 700 E2
372 * 3 5525 700 E3
373 * 4 6225 700 E4
374 *
375 * 5 17525 700 E5
376 * 6 18225 700 E6
377 * 7 18925 700 E7
378 * 8 19625 700 E8
379 * 9 20325 700 E9
380 * 10 21025 700 E10
381 * 11 21725 700 E11
382 * 12 22425 700 E12
383 *
384 * 13 5375 700 ITA
385 * 14 6225 700 ITB
386 *
387 * 15 8225 700 ITC
388 *
389 * 16 17525 700 ITD
390 * 17 18325 700 ITE
391 *
392 * 18 19225 700 ITF
393 * 19 20125 700 ITG
394 * 20 21025 700 ITH
395 *
396 * 21 47125 800 E21
397 * 22 47925 800 E22
398 * 23 48725 800 E23
399 * 24 49525 800 E24
400 * 25 50325 800 E25
401 * 26 51125 800 E26
402 * 27 51925 800 E27
403 * 28 52725 800 E28
404 * 29 53525 800 E29
405 * 30 54325 800 E30
406 * 31 55125 800 E31
407 * 32 55925 800 E32
408 * 33 56725 800 E33
409 * 34 57525 800 E34
410 * 35 58325 800 E35
411 * 36 59125 800 E36
412 * 37 59925 800 E37
413 * 38 60725 800 E38
414 * 39 61525 800 E39
415 * 40 62325 800 E40
416 * 41 63125 800 E41
417 * 42 63925 800 E42
418 * 43 64725 800 E43
419 * 44 65525 800 E44
420 * 45 66325 800 E45
421 * 46 67125 800 E46
422 * 47 67925 800 E47
423 * 48 68725 800 E48
424 * 49 69525 800 E49
425 * 50 70325 800 E50
426 * 51 71125 800 E51
427 * 52 71925 800 E52
428 * 53 72725 800 E53
429 * 54 73525 800 E54
430 * 55 74325 800 E55
431 * 56 75125 800 E56
432 * 57 75925 800 E57
433 * 58 76725 800 E58
434 * 59 77525 800 E59
435 * 60 78325 800 E60
436 * 61 79125 800 E61
437 * 62 79925 800 E62
438 * 63 80725 800 E63
439 * 64 81525 800 E64
440 * 65 82325 800 E65
441 * 66 83125 800 E66
442 * 67 83925 800 E67
443 * 68 84725 800 E68
444 * 69 85525 800 E69
445 *
446 * 70 4575 800 IA
447 * 71 5375 800 IB
448 * 72 6175 800 IC
449 *
450 * 74 6925 700 S01
451 * 75 7625 700 S02
452 * 76 8325 700 S03
453 *
454 * 80 10525 700 S1
455 * 81 11225 700 S2
456 * 82 11925 700 S3
457 * 83 12625 700 S4
458 * 84 13325 700 S5
459 * 85 14025 700 S6
460 * 86 14725 700 S7
461 * 87 15425 700 S8
462 * 88 16125 700 S9
463 * 89 16825 700 S10
464 * 90 23125 700 S11
465 * 91 23825 700 S12
466 * 92 24525 700 S13
467 * 93 25225 700 S14
468 * 94 25925 700 S15
469 * 95 26625 700 S16
470 * 96 27325 700 S17
471 * 97 28025 700 S18
472 * 98 28725 700 S19
473 * 99 29425 700 S20
474 *
475 *
476 * Channels S21 - S41 are taken from
477 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html
478 *
479 * 100 30325 800 S21
480 * 101 31125 800 S22
481 * 102 31925 800 S23
482 * 103 32725 800 S24
483 * 104 33525 800 S25
484 * 105 34325 800 S26
485 * 106 35125 800 S27
486 * 107 35925 800 S28
487 * 108 36725 800 S29
488 * 109 37525 800 S30
489 * 110 38325 800 S31
490 * 111 39125 800 S32
491 * 112 39925 800 S33
492 * 113 40725 800 S34
493 * 114 41525 800 S35
494 * 115 42325 800 S36
495 * 116 43125 800 S37
496 * 117 43925 800 S38
497 * 118 44725 800 S39
498 * 119 45525 800 S40
499 * 120 46325 800 S41
500 *
501 * 121 3890 000 IFFREQ
502 *
503 */
504static const int weurope[] = {
505 121, (int)( 38.90 * FREQFACTOR16), 0,
506 100, (int)(303.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
507 90, (int)(231.25 * FREQFACTOR16), (int)(7.00 * FREQFACTOR16),
508 80, (int)(105.25 * FREQFACTOR16), (int)(7.00 * FREQFACTOR16),
509 74, (int)( 69.25 * FREQFACTOR16), (int)(7.00 * FREQFACTOR16),
510 21, (int)(471.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
511 17, (int)(183.25 * FREQFACTOR16), (int)(9.00 * FREQFACTOR16),
512 16, (int)(175.25 * FREQFACTOR16), (int)(9.00 * FREQFACTOR16),
513 15, (int)(82.25 * FREQFACTOR16), (int)(8.50 * FREQFACTOR16),
514 13, (int)(53.75 * FREQFACTOR16), (int)(8.50 * FREQFACTOR16),
515 5, (int)(175.25 * FREQFACTOR16), (int)(7.00 * FREQFACTOR16),
516 2, (int)(48.25 * FREQFACTOR16), (int)(7.00 * FREQFACTOR16),
517 0
518};
519
520/*
521 * Japanese Broadcast Channels:
522 *
523 * 1: 91.25MHz - 3: 103.25MHz
524 * 4: 171.25MHz - 7: 189.25MHz
525 * 8: 193.25MHz - 12: 217.25MHz (VHF)
526 * 13: 471.25MHz - 62: 765.25MHz (UHF)
527 *
528 * IF freq: 45.75 mHz
529 * OR
530 * IF freq: 58.75 mHz
531 */
532#define OFFSET 6.00
533#define IF_FREQ 45.75
534static const int jpnbcst[] = {
535 62, (int)(IF_FREQ * FREQFACTOR16), 0,
536 13, (int)(471.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
537 8, (int)(193.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
538 4, (int)(171.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
539 1, (int)( 91.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
540 0
541};
542#undef IF_FREQ
543#undef OFFSET
544
545/*
546 * Japanese Cable Channels:
547 *
548 * 1: 91.25MHz - 3: 103.25MHz
549 * 4: 171.25MHz - 7: 189.25MHz
550 * 8: 193.25MHz - 12: 217.25MHz
551 * 13: 109.25MHz - 21: 157.25MHz
552 * 22: 165.25MHz
553 * 23: 223.25MHz - 63: 463.25MHz
554 *
555 * IF freq: 45.75 mHz
556 */
557#define OFFSET 6.00
558#define IF_FREQ 45.75
559static const int jpncable[] = {
560 63, (int)(IF_FREQ * FREQFACTOR16), 0,
561 23, (int)(223.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
562 22, (int)(165.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
563 13, (int)(109.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
564 8, (int)(193.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
565 4, (int)(171.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
566 1, (int)( 91.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
567 0
568};
569#undef IF_FREQ
570#undef OFFSET
571
572/*
573 * xUSSR Broadcast Channels:
574 *
575 * 1: 49.75MHz - 2: 59.25MHz
576 * 3: 77.25MHz - 5: 93.25MHz
577 * 6: 175.25MHz - 12: 223.25MHz
578 * 13-20 - not exist
579 * 21: 471.25MHz - 34: 575.25MHz
580 * 35: 583.25MHz - 69: 855.25MHz
581 *
582 * Cable channels
583 *
584 * 70: 111.25MHz - 77: 167.25MHz
585 * 78: 231.25MHz -107: 463.25MHz
586 *
587 * IF freq: 38.90 MHz
588 */
589#define IF_FREQ 38.90
590static const int xussr[] = {
591 107, (int)(IF_FREQ * FREQFACTOR16), 0,
592 78, (int)(231.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
593 70, (int)(111.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
594 35, (int)(583.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
595 21, (int)(471.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
596 6, (int)(175.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
597 3, (int)( 77.25 * FREQFACTOR16), (int)(8.00 * FREQFACTOR16),
598 1, (int)( 49.75 * FREQFACTOR16), (int)(9.50 * FREQFACTOR16),
599 0
600};
601#undef IF_FREQ
602
603/*
604 * Australian broadcast channels
605 */
606#define OFFSET 7.00
607#define IF_FREQ 38.90
608static const int australia[] = {
609 83, (int)(IF_FREQ * FREQFACTOR16), 0,
610 28, (int)(527.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
611 10, (int)(209.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
612 6, (int)(175.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
613 4, (int)( 95.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
614 3, (int)( 86.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
615 1, (int)( 57.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16),
616 0
617};
618#undef OFFSET
619#undef IF_FREQ
620
621/*
622 * France broadcast channels
623 */
624#define OFFSET 8.00
625#define IF_FREQ 38.90
626static const int france[] = {
627 69, (int)(IF_FREQ * FREQFACTOR16), 0,
628 21, (int)(471.25 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16), /* 21 -> 69 */
629 5, (int)(176.00 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16), /* 5 -> 10 */
630 4, (int)( 63.75 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16), /* 4 */
631 3, (int)( 60.50 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16), /* 3 */
632 1, (int)( 47.75 * FREQFACTOR16), (int)(OFFSET * FREQFACTOR16), /* 1 2 */
633 0
634};
635#undef OFFSET
636#undef IF_FREQ
637
638static const struct {
639 const int *ptr;
640 char name[BT848_MAX_CHNLSET_NAME_LEN16];
641} freqTable[] = {
642 {NULL((void *)0), ""},
643 {nabcst, "nabcst"},
644 {irccable, "cableirc"},
645 {hrccable, "cablehrc"},
646 {weurope, "weurope"},
647 {jpnbcst, "jpnbcst"},
648 {jpncable, "jpncable"},
649 {xussr, "xussr"},
650 {australia, "australia"},
651 {france, "france"},
652
653};
654
655#define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
656#define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
657#define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
658static int
659frequency_lookup( bktr_ptr_t bktr, int channel )
660{
661 int x;
662
663 /* check for "> MAX channel" */
664 x = 0;
665 if ( channel > TBL_CHNL )
666 return( -1 );
667
668 /* search the table for data */
669 for ( x = 3; TBL_CHNL; x += 3 ) {
670 if ( channel >= TBL_CHNL ) {
671 return( TBL_BASE_FREQ +
672 ((channel - TBL_CHNL) * TBL_OFFSET) );
673 }
674 }
675
676 /* not found, must be below the MIN channel */
677 return( -1 );
678}
679#undef TBL_OFFSET
680#undef TBL_BASE_FREQ
681#undef TBL_CHNL
682
683
684#define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ]
685
686
687/* Initialise the tuner structures in the bktr_softc */
688/* This is needed as the tuner details are no longer globally declared */
689
690void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
691 if (tuner_type < Bt848_MAX_TUNER15) {
692 bktr->card.tuner = &tuners[ tuner_type ];
693 } else {
694 bktr->card.tuner = NULL((void *)0);
695 }
696}
697
698/*
699 * Tuner Notes:
700 * Programming the tuner properly is quite complicated.
701 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
702 * The tuner (front end) covers 45.75 MHz - 855.25 MHz and an FM band of
703 * 87.5 MHz to 108.0 MHz.
704 *
705 * RF and IF. RF = radio frequencies, it is the transmitted signal.
706 * IF is the Intermediate Frequency (the offset from the base
707 * signal where the video, color, audio and NICAM signals are.
708 *
709 * Eg, Picture at 38.9 MHz, Colour at 34.47 MHz, sound at 32.9 MHz
710 * NICAM at 32.348 MHz.
711 * Strangely enough, there is an IF (intermediate frequency) for
712 * FM Radio which is 10.7 MHz.
713 *
714 * The tuner also works in Bands. Philips bands are
715 * FM radio band 87.50 to 108.00 MHz
716 * Low band 45.75 to 170.00 MHz
717 * Mid band 170.00 to 450.00 MHz
718 * High band 450.00 to 855.25 MHz
719 *
720 *
721 * Now we need to set the PLL on the tuner to the required frequency.
722 * It has a programmable divisor.
723 * For TV we want
724 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
725 * are in MHz.
726
727 * For RADIO we want a different equation.
728 * freq IF is 10.70 MHz (so the data sheet tells me)
729 * N = (freq RF + freq IF) / step size
730 * The step size must be set to 50 khz (so the data sheet tells me)
731 * (note this is 50 kHz, the other things are in MHz)
732 * so we end up with N = 20x(freq RF + 10.7)
733 *
734 */
735
736#define LOW_BAND0 0
737#define MID_BAND1 1
738#define HIGH_BAND2 2
739#define FM_RADIO_BAND3 3
740
741
742/* Check if these are correct for other than Philips PAL */
743#define STATUSBIT_COLD0x80 0x80
744#define STATUSBIT_LOCK0x40 0x40
745#define STATUSBIT_TV0x20 0x20
746#define STATUSBIT_STEREO0x10 0x10 /* valid if FM (aka not TV) */
747#define STATUSBIT_ADC0x07 0x07
748
749/*
750 * set the frequency of the tuner
751 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
752 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
753 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
754 *
755 */
756int
757tv_freq( bktr_ptr_t bktr, int frequency, int type )
758{
759 const struct TUNER* tuner;
760 u_char addr;
761 u_char control;
762 u_char band;
763 int N;
764 int band_select = 0;
765#if defined( TEST_TUNER_AFC )
766 int oldFrequency, afcDelta;
767#endif
768
769 tuner = bktr->card.tuner;
770 if ( tuner == NULL((void *)0) )
771 return( -1 );
772
773 if (type == TV_FREQUENCY0) {
774 /*
775 * select the band based on frequency
776 * XXX FIXME: get the cross-over points from the tuner struct
777 */
778 if ( frequency < (160 * FREQFACTOR16 ) )
779 band_select = LOW_BAND0;
780 else if ( frequency < (454 * FREQFACTOR16 ) )
781 band_select = MID_BAND1;
782 else
783 band_select = HIGH_BAND2;
784
785 bktr->tuner.tuner_mode = BT848_TUNER_MODE_TV1;
786
787#if defined( TEST_TUNER_AFC )
788 if ( bktr->tuner.afc )
789 frequency -= 4;
790#endif
791 /*
792 * N = 16 * { fRF(pc) + fIF(pc) }
793 * or N = 16* fRF(pc) + 16*fIF(pc) }
794 * where:
795 * pc is picture carrier, fRF & fIF are in MHz
796 *
797 * fortunately, frequency is passed in as MHz * 16
798 * and the TBL_IF frequency is also stored in MHz * 16
799 */
800 N = frequency + TBL_IF;
801
802 /* set the address of the PLL */
803 addr = bktr->card.tuner_pllAddr;
804 control = tuner->pllControl[ band_select ];
805 band = tuner->bandAddrs[ band_select ];
806
807 if(!(band && control)) /* Don't try to set un- */
808 return(-1); /* supported modes. */
809
810 if ( frequency > bktr->tuner.frequency ) {
811 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
812 i2cWrite( bktr, addr, control, band );
813 }
814 else {
815 i2cWrite( bktr, addr, control, band );
816 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
817 }
818
819#if defined( TUNER_AFC )
820 if ( bktr->tuner.afc == TRUE1 ) {
821#if defined( TEST_TUNER_AFC )
822 oldFrequency = frequency;
823#endif
824 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
825 /* AFC failed, restore requested frequency */
826 N = frequency + TBL_IF;
827#if defined( TEST_TUNER_AFC )
828 printf("%s: do_afc: failed to lock\n",
829 bktr_name(bktr));
830#endif
831 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
832 }
833 else
834 frequency = N - TBL_IF;
835#if defined( TEST_TUNER_AFC )
836 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
837 afcDelta = frequency - oldFrequency;
838 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
839#endif
840 }
841#endif /* TUNER_AFC */
842
843 bktr->tuner.frequency = frequency;
844 }
845
846 if ( type == FM_RADIO_FREQUENCY1 ) {
847 band_select = FM_RADIO_BAND3;
848
849 bktr->tuner.tuner_mode = BT848_TUNER_MODE_RADIO2;
850
851 /*
852 * N = { fRF(pc) + fIF(pc) }/step_size
853 * The step size is 50kHz for FM radio.
854 * (eg after 102.35MHz comes 102.40 MHz)
855 * fIF is 10.7 MHz (as detailed in the specs)
856 *
857 * frequency is passed in as MHz * 100
858 *
859 * So, we have N = (frequency/100 + 10.70) /(50/1000)
860 */
861 N = (frequency + 1070)/5;
862
863 /* set the address of the PLL */
864 addr = bktr->card.tuner_pllAddr;
865 control = tuner->pllControl[ band_select ];
866 band = tuner->bandAddrs[ band_select ];
867
868 if(!(band && control)) /* Don't try to set un- */
869 return(-1); /* supported modes. */
870
871 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
872 * the ioctls RADIO_SETMODE
873 * and RADIO_GETMODE */
874
875 i2cWrite( bktr, addr, control, band );
876 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
877
878 bktr->tuner.frequency = (N * 5) - 1070;
879
880
881 }
882
883
884 return( 0 );
885}
886
887
888
889#if defined( TUNER_AFC )
890/*
891 *
892 */
893int
894do_afc( bktr_ptr_t bktr, int addr, int frequency )
895{
896 int step;
897 int status;
898 int origFrequency;
899
900 origFrequency = frequency;
901
902 /* wait for first setting to take effect */
903 tsleep_nsec( BKTR_SLEEP((caddr_t)bktr ), PZERO22, "tuning", MSEC_TO_NSEC(1000 / 8) );
904
905 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
Although the value stored to 'status' is used in the enclosing expression, the value is never actually read from 'status'
906 return( -1 );
907
908#if defined( TEST_TUNER_AFC )
909 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
910#endif
911 for ( step = 0; step < AFC_MAX_STEP(5 * 16); ++step ) {
912 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
913 goto fubar;
914 if ( !(status & 0x40) ) {
915#if defined( TEST_TUNER_AFC )
916 printf( "%s: no lock!\n", bktr_name(bktr) );
917#endif
918 goto fubar;
919 }
920
921 switch( status & AFC_BITS0x07 ) {
922 case AFC_FREQ_CENTERED0x02:
923#if defined( TEST_TUNER_AFC )
924 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
925#endif
926 return( frequency );
927
928 case AFC_FREQ_MINUS_1250x00:
929 case AFC_FREQ_MINUS_620x01:
930#if defined( TEST_TUNER_AFC )
931 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
932#endif
933 --frequency;
934 break;
935
936 case AFC_FREQ_PLUS_620x03:
937 case AFC_FREQ_PLUS_1250x04:
938#if defined( TEST_TUNER_AFC )
939 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
940#endif
941 ++frequency;
942 break;
943 }
944
945 i2cWrite( bktr, addr,
946 (frequency>>8) & 0x7f, frequency & 0xff );
947 DELAY( AFC_DELAY )(*delay_func)(10000);
948 }
949
950 fubar:
951 i2cWrite( bktr, addr,
952 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
953
954 return( -1 );
955}
956#endif /* TUNER_AFC */
957#undef TBL_IF
958
959
960/*
961 * Get the Tuner status and signal strength
962 */
963int get_tuner_status( bktr_ptr_t bktr ) {
964 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
965}
966
967/*
968 * set the channel of the tuner
969 */
970int
971tv_channel( bktr_ptr_t bktr, int channel )
972{
973 int frequency;
974
975 /* calculate the frequency according to tuner type */
976 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
977 return( -1 );
978
979 /* set the new frequency */
980 if ( tv_freq( bktr, frequency, TV_FREQUENCY0 ) < 0 )
981 return( -1 );
982
983 /* OK to update records */
984 return( (bktr->tuner.channel = channel) );
985}
986
987/*
988 * get channelset name
989 */
990int
991tuner_getchnlset(struct bktr_chnlset *chnlset)
992{
993 if (( chnlset->index < CHNLSET_MIN1 ) ||
994 ( chnlset->index > CHNLSET_MAX9 ))
995 return( EINVAL22 );
996
997 memcpy(&chnlset->name, &freqTable[chnlset->index].name,__builtin_memcpy((&chnlset->name), (&freqTable[chnlset
->index].name), (16))
998 BT848_MAX_CHNLSET_NAME_LEN)__builtin_memcpy((&chnlset->name), (&freqTable[chnlset
->index].name), (16));
999
1000 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1001 return( 0 );
1002}