diff options
| author | Robert Jarzmik <robert.jarzmik@free.fr> | 2017-09-02 21:54:04 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-09-04 18:24:56 +0100 |
| commit | 74426fbff66eea8e8d1f42c8238c268d1e63a832 (patch) | |
| tree | 98b6d36b8fc9f8059cbbb2114ce592dab5a94be7 /sound/ac97/ac97_core.h | |
| parent | 8e4f7d9b8c652b4eb3ceb790e1e9fe433f9e3b58 (diff) | |
| download | linux-74426fbff66eea8e8d1f42c8238c268d1e63a832.tar.bz2 | |
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>
Diffstat (limited to 'sound/ac97/ac97_core.h')
| -rw-r--r-- | sound/ac97/ac97_core.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sound/ac97/ac97_core.h b/sound/ac97/ac97_core.h new file mode 100644 index 000000000000..08441a4fda7c --- /dev/null +++ b/sound/ac97/ac97_core.h @@ -0,0 +1,16 @@ +/* + * 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); +} |