ALSA: hda - Add infrastructure for dynamic stream allocation

Added the infrastructure for dynamic stream allocation on HD-audio.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 1 deletions

diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 60468f562400..70e8fa09273d 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -542,6 +542,8 @@ struct hda_bus_ops {
         unsigned int (*get_response)(struct hda_codec *codec);
         /* free the private data */
         void (*private_free)(struct hda_bus *);
+        /* attach a PCM stream */
+        int (*attach_pcm)(struct hda_codec *codec, struct hda_pcm *pcm);
 #ifdef CONFIG_SND_HDA_POWER_SAVE
         /* notify power-up/down from codec to controller */
         void (*pm_notify)(struct hda_codec *codec);
@@ -680,7 +682,8 @@ struct hda_pcm {
         char *name;
         struct hda_pcm_stream stream[2];
         unsigned int pcm_type;  /* HDA_PCM_TYPE_XXX */
-        int device;     /* assigned device number */
+        int device;             /* device number to assign */
+        struct snd_pcm *pcm;    /* assigned PCM instance */
 };
 
 /* codec information */