3 * MAINTAINER = Roger Hardiman <roger@freebsd.org>
4 * Newsflash: Roger is temorararily out of touch and unable
9 * This is part of the Driver for Video Capture Cards (Frame grabbers)
10 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
12 * Copyright Roger Hardiman and Amancio Hasty.
14 * CHANGELOG : The Change History:
15 * These version numbers represent the authors own numbering.
16 * They are unrelated to Revision Control numbering of FreeBSD or
19 1.0 1/24/97 First Alpha release
21 1.1 2/20/97 Added video ioctl so we can do PCI To PCI
22 data transfers. This is for capturing data
23 directly to a vga frame buffer which has
24 a linear frame buffer. Minor code clean-up.
26 1.3 2/23/97 Fixed system lock-up reported by
27 Randall Hopper <rhh@ct.picker.com>. This
28 problem seems somehow to be exhibited only
29 in his system. I changed the setting of
30 INT_MASK for CAP_CONTINUOUS to be exactly
31 the same as CAP_SINGLE apparently setting
32 bit 23 cleared the system lock up.
33 version 1.1 of the driver has been reported
34 to work with STB's WinTv, Hauppage's Wincast/Tv
35 and last but not least with the Intel Smart
38 1.4 3/9/97 fsmp@freefall.org
39 Merged code to support tuners on STB and WinCast
41 Modifications to the contrast and chroma ioctls.
44 1.5 3/15/97 fsmp@freefall.org
45 new bt848 specific versions of hue/bright/
47 Amancio's patch to fix "screen freeze" problem.
49 1.6 3/19/97 fsmp@freefall.org
50 new table-driven frequency lookup.
51 removed disable_intr()/enable_intr() calls from i2c.
54 1.7 3/19/97 fsmp@freefall.org
55 added audio support submitted by:
56 Michael Petry <petry@netwolf.NetMasters.com>
58 1.8 3/20/97 fsmp@freefall.org
59 extended audio support.
61 major cleanup, order of routines, declarations, etc.
63 1.9 3/22/97 fsmp@freefall.org
64 merged in Amancio's minor unit for tuner control
66 misc. cleanup, especially in the _intr routine.
67 made AUDIO_SUPPORT mainline code.
69 1.10 3/23/97 fsmp@freefall.org
70 added polled hardware i2c routines,
71 removed all existing software i2c routines.
72 created software i2cProbe() routine.
73 Randall Hopper's fixes of BT848_GHUE & BT848_GBRIG.
76 1.11 3/24/97 fsmp@freefall.org
77 Louis Mamakos's new bt848 struct.
79 1.12 3/25/97 fsmp@freefall.org
80 japanese freq table from Naohiro Shichijo.
81 new table structs for tuner lookups.
82 major scrub for "magic numbers".
84 1.13 3/28/97 fsmp@freefall.org
86 MAGIC_[1-4] demarcates magic #s needing PAL work.
87 AFC code submitted by Richard Tobin
88 <richard@cogsci.ed.ac.uk>.
90 1.14 3/29/97 richard@cogsci.ed.ac.uk
91 PAL support: magic numbers moved into
92 format_params structure.
93 Revised AFC interface.
94 fixed DMA_PROG_ALLOC size misdefinition.
96 1.15 4/18/97 John-Mark Gurney <gurney_j@resnet.uoregon.edu>
97 Added [SR]RGBMASKs ioctl for byte swapping.
99 1.16 4/20/97 Randall Hopper <rhh@ct.picker.com>
100 Generalized RGBMASK ioctls for general pixel
101 format setting [SG]ACTPIXFMT, and added query API
102 to return driver-supported pix fmts GSUPPIXFMT.
104 1.17 4/21/97 hasty@rah.star-gate.com
105 Clipping support added.
107 1.18 4/23/97 Clean up after failed CAP_SINGLEs where bt
108 interrupt isn't delivered, and fixed fixing
109 CAP_SINGLEs that for ODD_ONLY fields.
110 1.19 9/8/97 improved yuv support , cleaned up weurope
111 channel table, incorporated cleanup work from
112 Luigi, fixed pci interface bug due to a
113 change in the pci interface which disables
114 interrupts from a PCI device by default,
115 Added Luigi's, ioctl's BT848_SLNOTCH,
116 BT848_GLNOTCH (set luma notch and get luma not)
117 1.20 10/5/97 Keith Sklower <sklower@CS.Berkeley.EDU> submitted
118 a patch to fix compilation of the BSDI's PCI
120 Hideyuki Suzuki <hideyuki@sat.t.u-tokyo.ac.jp>
121 Submitted a patch for Japanese cable channels
122 Joao Carlos Mendes Luis jonny@gta.ufrj.br
123 Submitted general ioctl to set video broadcast
124 formats (PAL, NTSC, etc..) previously we depended
125 on the Bt848 auto video detect feature.
126 1.21 10/24/97 Randall Hopper <rhh@ct.picker.com>
127 Fix temporal decimation, disable it when
128 doing CAP_SINGLEs, and in dual-field capture, don't
129 capture fields for different frames
130 1.22 11/08/97 Randall Hopper <rhh@ct.picker.com>
131 Fixes for packed 24bpp - FIFO alignment
132 1.23 11/17/97 Amancio <hasty@star-gate.com>
133 Added yuv support mpeg encoding
134 1.24 12/27/97 Jonathan Hanna <pangolin@rogers.wave.ca>
135 Patch to support Philips FR1236MK2 tuner
136 1.25 02/02/98 Takeshi Ohashi
137 <ohashi@atohasi.mickey.ai.kyutech.ac.jp> submitted
138 code to support bktr_read .
139 Flemming Jacobsen <fj@schizo.dk.tfs.com>
140 submitted code to support radio available with in
141 some bt848 based cards;additionally, wrote code to
142 correctly recognized his bt848 card.
143 Roger Hardiman <roger@cs.strath.ac.uk> submitted
144 various fixes to smooth out the microcode and made
145 all modes consistent.
146 1.26 Moved Luigi's I2CWR ioctl from the video_ioctl
147 section to the tuner_ioctl section
148 Changed Major device from 79 to 92 and reserved
149 our Major device number -- hasty@star-gate.com
150 1.27 Last batch of patches for radio support from
151 Flemming Jacobsen <fj@trw.nl>.
152 Added B849 PCI ID submitted by:
153 Tomi Vainio <tomppa@fidata.fi>
154 1.28 Frank Nobis <fn@Radio-do.de> added tuner support
155 for the German Phillips PAL tuner and
156 additional channels for german cable tv.
157 1.29 Roger Hardiman <roger@cs.strath.ac.uk>
158 Revised autodetection code to correctly handle both
159 old and new VideoLogic Captivator PCI cards.
160 Added tsleep of 2 seconds to initialistion code
161 for PAL users.Corrected clock selection code on
163 1.30 Bring back Frank Nobis <fn@Radio-do.de>'s opt_bktr.h
165 1.31 Randall Hopper <rhh@ct.picker.com>
166 submitted ioctl to clear the video buffer
167 prior to starting video capture
168 Amancio : clean up yuv12 so that it does not
169 affect rgb capture. Basically, fxtv after
170 capturing in yuv12 mode , switching to rgb
171 would cause the video capture to be too bright.
172 1.32 disable inverse gamma function for rgb and yuv
173 capture. fixed meteor brightness ioctl it now
174 converts the brightness value from unsigned to
176 1.33 added sysctl: hw.bt848.tuner, hw.bt848.reverse_mute,
178 card takes a value from 0 to bt848_max_card
179 tuner takes a value from 0 to bt848_max_tuner
180 reverse_mute : 0 no effect, 1 reverse tuner
181 mute function some tuners are wired reversed :(
182 1.34 reverse mute function for ims turbo card
184 1.35 Roger Hardiman <roger@cs.strath.ac.uk>
185 options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
186 in the kernel config file makes the driver's
187 video_open() function select PAL rather than NTSC.
188 This fixed all the hangs on my Dual Crystal card
189 when using a PAL video signal. As a result, you
190 can loose the tsleep (of 2 seconds - now 0.25!!)
191 which I previously added. (Unless someone else
192 wanted the 0.25 second tsleep).
194 1.36 added bt848.format sysctl variable.
195 1 denotes NTSC , 0 denotes PAL
197 1.37 added support for Bt878 and improved Hauppauge's
198 bt848 tuner recognition
199 1.38 Further improvements on Hauppauge's rely on
200 eeprom[9] to determine the tuner type 8)
202 AVerMedia card type added <sos@freebsd.org>
204 1.39 08/05/98 Roger Hardiman <roger@cs.strath.ac.uk>
205 Updated Hauppauge detection code for Tuner ID 0x0a
206 for newer NTSC WinCastTV 404 with Bt878 chipset.
207 Tidied up PAL default in video_open()
209 Soren bumped version from 1.39 to 1.49 to sync
210 with FreeBSD CVS numbers.
212 1.49 10 August 1998 Roger Hardiman <roger@cs.strath.ac.uk>
213 Added Capture Area ioctl - BT848[SG]CAPAREA.
214 Normally the full 640x480 (768x576 PAL) image
215 is grabbed. This ioctl allows a smaller area
216 from anywhere within the video image to be
217 grabbed, eg a 400x300 image from (50,10).
218 See restrictions in BT848SCAPAREA.
220 1.50 31 August 1998 Roger Hardiman <roger@cs.strath.ac.uk>
221 Renamed BT848[SG]CAPAREA to BT848_[SG]CAPAREA.
222 Added PR kern/7177 for SECAM Video Highway Xtreme
223 with single crystal PLL configuration
224 submitted by Vsevolod Lobko <seva@alex-ua.com>.
225 In kernel configuration file add
226 options OVERRIDE_CARD=2
227 options OVERRIDE_TUNER=11
230 1.51 31 August 1998 Roger Hardiman <roger@cs.strath.ac.uk>
231 Fixed bug in Miro Tuner detection. Missing Goto.
232 Removed Hauppauge EEPROM 0x10 detection as I think
233 0x10 should be a PAL tuner, not NTSC.
234 Reinstated some Tuner Guesswork code from 1.27
236 1.52 3 Sep 1998 Roger Hardiman <roger@cs.strath.ac.uk>
237 Submitted patch by Vsevolod Lobko <seva@alex-ua.com>
238 to correct SECAM B-Delay and add XUSSR channel set.
240 1.53 9 Sep 1998 Roger Hardiman <roger@cs.strath.ac.uk>
241 Changed METEORSINPUT for Hauppauge cards with bt878.
242 Submitted by Fred Templin <templin@erg.sri.com>
243 Also fixed video_open defines and 878 support.
245 1.54 18 Sep 1998 Roger Hardiman <roger@cs.strath.ac.uk>
246 Changed tuner code to autodetect tuner i2c address.
247 Addresses were incorrectly hardcoded.
249 1.55 21 Sep 1998 Roger Hardiman <roger@cs.strath.ac.uk>
250 Hauppauge Tech Support confirmed all Hauppauge 878
251 PAL/SECAM boards will use PLL mode.
252 Added to card probe. Thanks to Ken and Fred.
254 1.56 21 Jan 1999 Roger Hardiman <roger@cs.strath.ac.uk>
255 Added detection of Hauppauge IR remote control.
256 and MSP34xx Audio chip. Fixed i2c read error.
257 Hauppauge supplied details of new Tuner Types.
258 Danny Braniss <danny@cs.huji.ac.il> submitted Bt878
259 AVerMedia detection with PCI subsystem vendor id.
261 1.57 26 Jan 1999 Roger Hardiman <roger@cs.strath.ac.uk>
262 Support for MSP3410D / MSP3415D Stereo/Mono audio
263 using the audio format Auto Detection Mode.
264 Nicolas Souchu <nsouch@freebsd.org> ported the
265 msp_read/write/reset functions to smbus/iicbus.
266 METEOR_INPUT_DEV2 now selects a composite camera on
267 the SVIDEO port for Johan Larsson<gozer@ludd.luth.se>
268 For true SVIDEO, use METEOR_INPUT_DEV_SVIDEO
270 1.58 8 Feb 1999 Roger Hardiman <roger@cs.strath.ac.uk>
271 Added check to bktr_mmap from OpenBSD driver.
272 Improved MSP34xx reset for bt848 Hauppauge boards.
273 Added detection for Bt848a.
274 Vsevolod Lobko<seva@sevasoft.alex-ua.com> added
277 1.59 9 Feb 1999 Added ioctl REMOTE_GETKEY for Hauppauge Infra-Red
278 Remote Control. Submitted by Roger Hardiman.
279 Added ioctl TVTUNER_GETCHANSET and
280 BT848_GPIO_SET_EN,BT848_GPIO_SET_DATA (and GETs)
281 Submitted by Vsevolod Lobko <seva@alex-ua.com>
283 1.60 23 Feb 1999 Roger Hardiman <roger@freebsd.org>
284 Corrected Mute on Hauppauge Radio cards.
285 Autodetect MMAC Osprey by looking for "MMAC" in the EEPROM.
286 Added for Jan Schmidt <mmedia@rz.uni-greifswald.de>
287 Added ALPS Tuner Type from Hiroki Mori <mori@infocity.co.jp>
289 1.61 29 Apr 1999 Roger Hardiman <roger@freebsd.org>
290 Fix row=0/columns=0 bug. From Randal Hopper<aa8vb@ipass.net>
291 Add option to block the reset of the MSP34xx audio chip by
292 adding options BKTR_NO_MSP_RESET to the kernel config file.
293 This is usefull if you run another operating system
294 first to initialise the audio chip, then do a soft reboot.
295 Added for Yuri Gindin <yuri@xpert.com>
297 1.62 29 Apr 1999 Added new cards: NEC PK-UG-X017 and I/O DATA GV-BCTV2/PCI
298 Added new tuner: ALPS_TSBH1 (plus FM Radio for ALPS_TSCH5)
299 Added support for BCTV audio mux.
300 All submitted by Hiroki Mori <mori@infocity.co.jp>
302 1.63 29 Apr 1999 Roger Hardiman <roger@freebsd.org>
303 Added initial code for VBI capture based on work by
304 Hiroki Mori <mori@infocity.co.jp> and reworked by myself.
305 This allows software decoding of teletext, intercast and
306 subtitles via /dev/vbi.
308 1.64 7 May 1999 Roger Hardiman <roger@freebsd.org>
309 Support LifeView FlyVideo 98 cards. Use EEPROM for card
310 autodetection. Use bttv's audio mux values.
311 Thanks to Paul Reece <paul@fastlane.net.au>,
312 Ivan Brawley <brawley@internode.com.au> and
313 Gilad Rom <rom_glsa@ein-hashofet.co.il>
314 Automatically locate the EEPROM i2c address and read the
315 subsystem_vendor_id from EEPROM and not the PCI registers.
316 Add NSMBUS checks around smbus/iicbus i2c bus code
317 making it easier to compile the driver under 2.2.x.
318 Add GPIO mask for the audio mux to each card type.
319 Add CARD_ZOLTRIX and CARD_KISS from mailing list searches.
321 1.65 18 May 1999 Roger Hardiman <roger@freebsd.org>
322 Change Intel GPIO mask to stop turning the Intel Camera off
323 Fixed tuner selection on Hauppauge card with tuner 0x0a
324 Replaced none tuner with no tuner for Theo de Raadt.
325 Ivan Brawley <brawley@internode.com.au> added
326 the Australian channel frequencies.
328 1.66 19 May 1999 Ivan Brawley <brawley@internode.com.au> added better
329 Australian channel frequencies.
331 1.67 23 May 1999 Roger Hardiman <roger@freebsd.org>
332 Added rgb_vbi_prog() to capture VBI data and video at the
333 same time. To capture VBI data, /dev/vbi must be opened
334 before starting video capture.
336 1.68 25 May 1999 Roger Hardiman <roger@freebsd.org>
337 Due to differences in PCI bus implementations from various
338 motherboard chipset manufactuers, the Bt878/Bt879 has 3
339 PCI bus compatibility modes. These are
340 NORMAL PCI 2.1 for proper PCI 2.1 compatible chipsets.
341 INTEL 430 FX for the Intel 430 FX chipset.
342 SIS VIA CHIPSET for certain SiS and VIA chipsets.
343 Older Intel and non-Intel chipsets may also benefit from
344 either 430_FX or SIS/VIA mode.
346 NORMAL PCI mode is enabled by default.
347 For INTEL 430 FX mode, add this to your kenel config:
348 options "BKTR_430_FX_MODE"
349 For SiS / VIA mode, add this to your kernel config:
350 options "BKTR_SIS_VIA_MODE"
352 Using quotes in these options is not needed in FreeBSD 4.x.
354 Note. Newer VIA chipsets should be fully PCI 2.1 compatible
355 and should work fine in the Default mode.
357 Also rename 849 to 849A, the correct name for the chip.
359 1.69 12 June 1999 Roger Hardiman <roger@freebsd.org>
360 Updates for FreeBSD 4.x device driver interface.
361 BSDI code removed. Will be restored later.
363 1.70 12 July 1999 Roger Hardiman <roger@freebsd.org>
364 Reorganise OS device dependant parts (based on a port to
365 linux by Brad Parker).
366 Make the driver compile on FreeBSD 2.2.x systems again.
367 Change number of VBI lines from 16 to 12 for NTSC formats.
368 Changes to probeCard() for better eeprom identification.
369 Added STB Bt878 card identification.
370 Add Hauppauge model identification to probeCard().
371 Added TDA9850 initialisation code taken from Linux bttv.
372 Juha.Nurmela@quicknet.inet.fi found/fixed bug in VBI_SLEEP.
373 Matt Brown <matt@dqc.org> added MSP3430G DBX initialisation.
375 1.71 30 Aug 1999 Roger Hardiman <roger@freebsd.org>
376 Small cleanup of OS dependant code. Remove NPCI usage.
377 Fix bug in AVerMedia detection.
378 Update VBI support for the AleVT Teletext package. Parts
379 from Juha Nurmela's driver <Juha.Nurmela@quicknet.inet.fi>
380 Add support for Hauppauge 627 and Temic 4006 submitted
381 by Maurice Castro <maurice@atum.castro.aus.net>
382 Tom Jansen <tom@unhooked.net> added BSDi support again.
384 1.72 31 Aug 1999 Juha Nurmela <Juha.Nurmela@quicknet.inet.fi>
385 Clear cap_ctl register when restarting the RISC program.
386 This fixes the freezes experienced when changing changes.
388 1.73 10 Sep 1999 Roger Hardiman <roger@freebsd.org>
389 Add Hauppauge tuner #6 for Brian Somers <brian@freebsd.org>
390 Add card type for Aimslabs Video Highway Xtreme for
391 Ladislav Kostal <kostal@pefstud.uniag.sk>
392 Added select() code (for VBI) for the 2.2.x driver
393 tested by Steve Richards <steve@richsoft.demon.co.uk>
395 1.74 17 Sep 1999 Roger Hardiman <roger@freebsd.org>
396 Fix bug where FM radio stations were offset after using FXTV
397 AVerMedia tuner type autodetection added for cards with
398 a configuration EEPROM (currently their Bt878 range)
399 Thanks to Frank at AVerMedia for providing the information.
400 Tested by David La Croix <dlacroix@cowpie.acm.vt.edu>
401 Tidy up some tuner code and Hauppauge detection code.
402 New NetBSD code from Bernd Ernesti<bernd@arresum.inka.de>
404 2.00 25 Sep 1999 Roger Hardiman <roger@freebsd.org>
405 Split the driver into separate tuner, card and audio sections.
406 Update tuner code for FM radio to use datasheet equations.
408 2.01 27 Sep 1999 Roger Hardiman <roger@freebsd.org>
409 Add Dynalink Magic TView for Craig <crh@outpost.co.nz>
410 Add Leadtek Winfast 2000 for Peter Wemm <peter@netplex.com.au>
411 There is no audio support on these 2 cards yet.
412 Tidy up a few tables with tabs and PLL selection code.
413 Restore Video Highway Xtreme PLL code.
415 2.02 4 Oct 1999 Peter Wemm <peter@netplex.com.au>
416 Updated Australian Channel Set.
417 Added Tuner and Mute values for LeadTek Winfast 2000 card
419 2.03 5 Oct 1999 Thomas Runge <runge@rostock.zgdv.de>
420 Found FM radio bug mute introduced in release 2.00
422 2.04 20 Oct 1999 Roger Hardiman <roger@freebsd.org>
423 Updated AVerMedia audio sources to support FM and Line In
424 sources properly. (Based on info supplied by AVerMedia)
425 Make PLL mode the default for Bt878 chips. This means PAL
426 Bt878 users no longer need the BKTR_USE_PLL kernel option.
427 Detect and auto-configure Dolby Surround Sound DPL3518A chip
428 on Hauppauge WinTV Theater. From Frank Nobis <fn@radio-do.de>
430 2.05 8 Nov 1999 Update tuner control codes for Philips SECAM. Submitted by
431 Cyrille Lefevre <clefevre@citeweb.net>
432 Updated clipping code, ready for Xv support in XFree86 4.0,
433 submitted by Thomas Mueller <tmueller@thmu.de>
434 Thomas also has information on a LynxOS port of this driver.
435 Phase out the rgb_prog RISC program and use rgb_vbi_prog as
436 the default. Now you no longer have to open /dev/vbi
437 before /dev/bktr. - Roger Hardiman <roger@freebsd.org>
439 2.06 7 Dec 1999 Fix bug which made the tuner fail on cards detected as
440 IMS Turbo. Found by Patrick Mackeown<pgm@NS4.HELP-DESK.CO.UK>
441 Put back some Hauppauge Tuner Types I deleted my mistake.
442 Backout the switch from rgb_prob to rgb_vbi_prog due to
443 problems with NTSC users.
445 2.07 24 Jan 2000 Update i2c code to build on FreeBSD 3.x and 4.x machines.
446 Added GPIO audio values for the Askey/Dynalink TV card
447 taken from postings on the V4L mailing list.
448 Update Australian Channel Set. Submitted by
449 John Birrell <jb@cimlogic.com.au>
450 Add new Channel Set for France. Submitted by
451 Daniel Dagneaux <dagneaux@lure.u-psud.fr>
453 2.08 6 Mar 2000 Reinstate rgb_vbi_prog as the default RISC program for
454 PAL video. This does not want to work for NTSC, which will
455 continue to use the rgb_prog RISC program.
456 Add support for cable channels above channel 100.
457 Submitted by Scott Presnell <srp@zgi.com>
458 New MSP3410/3415 setup code submitted by
459 Frank Nobis<fn@radio-do.de>. This is experimental and is
460 enabled by setting the sysctl, hw.bt848.slow_msp_audio to 1
461 before starting FXTV (or before opening /dev/bktrN)
463 2.09 20 Mar 2000 Thomas Klausner <wiz@danbala.ifoer.tuwien.ac.at> submitted
464 patches to include the NetBSD and OpenBSD support from driver
465 1.74 into the new 2.xx driver. NetBSD is tested. OpenBSD is
467 Also fixed coding error in bktr_audio.c spotted by Thomas.
468 Change xxx_ioctl functions to use ioctl_cmd_t for the cmd
469 parameter. Found by looking at OpenBSDs change logs.
470 Delete PROT_EXEC from OpenBSD (as per OpenBSD cvs logs).
472 2.10 4 Apr 2000 Convert to using bus_space() to access the Bt848/878 registers
473 rather than using a memory mapped structure. This makes the
474 driver portable to other architectures, like Alpha and PPC.
475 This was done by Thomas Klausner <wiz@netbsd.org> and
476 myself Roger Hardiman <roger@freebsd.org>
478 2.11 15 Apr 2000 Made changes so the driver compiles on FreeBSD/Alpha.
479 Stop printing MSP autodetect. Requested by
480 Chris D. Faulhaber <jedgar@fxp.org>
482 2.12 16 Apr 2000 Set adelay as an 8 bit value, noticed by
483 Thomas Klausner <wiz@netbsd.org>
484 Fix typo in the new interrupt code.
486 2.12 20 May 2000 Merge in NetBSD changes from Thomas Klausner <wiz@netbsd.org>
487 following the import of driver 2.12 into NetBSD
489 2.13 26 Jun 2000 Merge in more changes from Thomas Klausner <wiz@netbsd.org>
490 syncing this driver with the NetBSD source at 25th June.
492 2.14 28 Jun 2000 Add new Hauppauge Tuner Types, supplied by Hauppauge and
493 required for Josef Karthauser <joe@pavilion.net>
494 Change the structure of some of the #include files and
495 merge in more NetBSD changes.
497 2.15 10 Sep 2000 Add support for bktr_mem, a module to hold onto the bktr
498 drives's contiguous memory buffers even when it is unloaded
500 Simplify the use of the optional SMBUS i2c code by using a new
501 #define called BKTR_USE_FREEBSD_SMBUS.
502 Poul-Henning Kamp <phk@freebsd.org> changed the DEVFS code.
503 Peter Wemm <peter@freebsd.org> fixed an SMBUS warning.
504 Alexander Langer <alex@cichlids.com> fixed some FreeBSD newbus
505 resource allocation problems (FreeBSD PR kern/18744).
507 2.16 19 Sep 2000 Merge in NetBSD changes from Thomas Klausner <wiz@netbsd.org>
509 2.17 19 Oct 2000 Alexander Langer <alex@big.endian.de> and
510 Daniel O'Connor <doconnor@gsoft.com.au>
511 both submitted fixes to devfs code.
512 Fix PHK's commit so we only include machine/clock.h in
513 FreeBSD 2.x, 3.x and 4.x systems
515 2.18 30 Oct 2000 Roger Hardiman - Add new ioctls to allow userland programs
516 fuller access to the I2C bus, BT848_MSP_READ BT848_MSP_WRITE
518 Add tuner type 0x2a. Remove 0x2c which was incorrect.
519 Christian Gusenbauer <Christian.Gusenbauer@netway.at> added
520 support for audio on Hauppauge cards without the audio mux.
521 The MSP is used for audio selection. (the 44xxx models)
523 [see http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/bktr/
524 for newer change logs ]