From e7a3484dc5b15aa69e44a8b29d9a6e512fa3f922 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Wed, 17 Jun 2015 11:20:16 +0530 Subject: 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 Signed-off-by: Vinod Koul Signed-off-by: Takashi Iwai --- include/sound/hdaudio_ext.h | 3 +++ sound/hda/ext/hdac_ext_stream.c | 50 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+) diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h index 202350a8eddb..877661629322 100644 --- a/include/sound/hdaudio_ext.h +++ b/include/sound/hdaudio_ext.h @@ -87,6 +87,9 @@ struct hdac_ext_stream { void snd_hdac_ext_stream_init(struct hdac_ext_bus *bus, struct hdac_ext_stream *stream, int idx, int direction, int tag); +int snd_hdac_ext_stream_init_all(struct hdac_ext_bus *ebus, int start_idx, + int num_stream, int dir); +void snd_hdac_stream_free_all(struct hdac_ext_bus *ebus); struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_ext_bus *bus, struct snd_pcm_substream *substream, int type); 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 +#include #include #include #include @@ -53,6 +54,55 @@ 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 -- cgit v1.2.3