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>
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c
index 0677bb6..f8ffbdb 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 @@
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