The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/ac97_patch.c

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    1 /*
    2  * Copyright 2002 FreeBSD, Inc. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  */
   25 
   26 #include <dev/sound/pcm/sound.h>
   27 #include <dev/sound/pcm/ac97.h>
   28 #include <dev/sound/pcm/ac97_patch.h>
   29 
   30 SND_DECLARE_FILE("$FreeBSD: releng/5.2/sys/dev/sound/pcm/ac97_patch.c 119208 2003-08-21 15:44:55Z orion $");
   31 
   32 void ad1886_patch(struct ac97_info* codec)
   33 {
   34 #define AC97_AD_JACK_SPDIF 0x72
   35         /*
   36          *    Presario700 workaround
   37          *     for Jack Sense/SPDIF Register misetting causing
   38          *    no audible output
   39          *    by Santiago Nullo 04/05/2002
   40          */
   41         ac97_wrcd(codec, AC97_AD_JACK_SPDIF, 0x0010);
   42 }
   43 
   44 void ad198x_patch(struct ac97_info* codec)
   45 {
   46         ac97_wrcd(codec, 0x76, ac97_rdcd(codec, 0x76) | 0x0420);
   47 }
   48 

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