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| author | Takashi Iwai <tiwai@suse.de> | 2015-03-03 17:33:10 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-03-23 13:19:35 +0100 |
| commit | 71fc4c7ef5ef2d0ddd22f0545ede4c135b554b84 (patch) | |
| tree | 2fad250a6c6f229aabd6b1aab41d24a50da511d9 /include/sound/hdaudio.h | |
| parent | ALSA: hda - Re-add tracepoints to HD-audio core driver (diff) | |
| download | linux-71fc4c7ef5ef2d0ddd22f0545ede4c135b554b84.tar.xz linux-71fc4c7ef5ef2d0ddd22f0545ede4c135b554b84.zip | |
ALSA: hda - Move generic array helpers to core lib
This will be used by the regmap support.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/hdaudio.h')
| -rw-r--r-- | include/sound/hdaudio.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index 675614dc2b88..3abdd3f16528 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -22,6 +22,17 @@ struct hdac_widget_tree; extern struct bus_type snd_hda_bus_type; /* + * generic arrays + */ +struct snd_array { + unsigned int used; + unsigned int alloced; + unsigned int elem_size; + unsigned int alloc_align; + void *list; +}; + +/* * HD-audio codec base device */ struct hdac_device { @@ -178,4 +189,26 @@ static inline void snd_hdac_codec_link_down(struct hdac_device *codec) clear_bit(codec->addr, &codec->bus->codec_powered); } +/* + * generic array helpers + */ +void *snd_array_new(struct snd_array *array); +void snd_array_free(struct snd_array *array); +static inline void snd_array_init(struct snd_array *array, unsigned int size, + unsigned int align) +{ + array->elem_size = size; + array->alloc_align = align; +} + +static inline void *snd_array_elem(struct snd_array *array, unsigned int idx) +{ + return array->list + idx * array->elem_size; +} + +static inline unsigned int snd_array_index(struct snd_array *array, void *ptr) +{ + return (unsigned long)(ptr - array->list) / array->elem_size; +} + #endif /* __SOUND_HDAUDIO_H */ |