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| author |   Vinod Koul <vinod.koul@intel.com> | 2015-06-17 11:20:16 +0530 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2015-06-17 12:29:26 +0200 |
| commit | e7a3484dc5b15aa69e44a8b29d9a6e512fa3f922 (patch) | |
| tree | a1d3532971c04d3e84513cd19ee6df67a25ab31a /sound | |
| parent | ALSA: HDAC: move SND_HDA_PREALLOC_SIZE to core (diff) | |
| download | linux-dev-e7a3484dc5b15aa69e44a8b29d9a6e512fa3f922.tar.xz linux-dev-e7a3484dc5b15aa69e44a8b29d9a6e512fa3f922.zip | |
ALSA: hda: add hdac_ext stream creation and cleanup routines
HDAC extended core should create streams for an extended bus and also free
up those on cleanup. So introduce snd_hdac_ext_stream_init_all and
snd_hdac_stream_free_all routines
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/hda/ext/hdac_ext_stream.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c index 0677bb65a494..f8ffbdbb450d 100644 --- a/sound/hda/ext/hdac_ext_stream.c +++ b/sound/hda/ext/hdac_ext_stream.c @@ -18,6 +18,7 @@ */ #include <linux/delay.h> +#include <linux/slab.h> #include <sound/pcm.h> #include <sound/hda_register.h> #include <sound/hdaudio_ext.h> @@ -54,6 +55,55 @@ void snd_hdac_ext_stream_init(struct hdac_ext_bus *ebus, EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_init); /** + * snd_hdac_ext_stream_init_all - create and initialize the stream objects + * for an extended hda bus + * @ebus: HD-audio ext core bus + * @start_idx: start index for streams + * @num_stream: number of streams to initialize + * @dir: direction of streams + */ +int snd_hdac_ext_stream_init_all(struct hdac_ext_bus *ebus, int start_idx, + int num_stream, int dir) +{ + int stream_tag = 0; + int i, tag, idx = start_idx; + + for (i = 0; i < num_stream; i++) { + struct hdac_ext_stream *stream = + kzalloc(sizeof(*stream), GFP_KERNEL); + if (!stream) + return -ENOMEM; + tag = ++stream_tag; + snd_hdac_ext_stream_init(ebus, stream, idx, dir, tag); + idx++; + } + + return 0; + +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_init_all); + +/** + * snd_hdac_stream_free_all - free hdac extended stream objects + * + * @ebus: HD-audio ext core bus + */ +void snd_hdac_stream_free_all(struct hdac_ext_bus *ebus) +{ + struct hdac_stream *s; + struct hdac_ext_stream *stream; + struct hdac_bus *bus = ebus_to_hbus(ebus); + + while (!list_empty(&bus->stream_list)) { + s = list_first_entry(&bus->stream_list, struct hdac_stream, list); + stream = stream_to_hdac_ext_stream(s); + list_del(&s->list); + kfree(stream); + } +} +EXPORT_SYMBOL_GPL(snd_hdac_stream_free_all); + +/** * snd_hdac_ext_stream_decouple - decouple the hdac stream * @ebus: HD-audio ext core bus * @stream: HD-audio ext core stream object to initialize |