linux-stable/sound/ac97/ac97_core.h
Robert Jarzmik 74426fbff6 ALSA: ac97: add an ac97 bus
AC97 is a bus for sound usage. It enables for a AC97 AC-Link to link one
controller to 0 to 4 AC97 codecs.

The goal of this new implementation is to implement a device/driver
model for AC97, with an automatic scan of the bus and automatic
discovery of AC97 codec devices.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-09-04 18:24:56 +01:00

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/*
* Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
unsigned int snd_ac97_bus_scan_one(struct ac97_controller *ac97,
unsigned int codec_num);
static inline bool ac97_ids_match(unsigned int id1, unsigned int id2,
unsigned int mask)
{
return (id1 & mask) == (id2 & mask);
}