[ALSA] hda-codec - Add channel-mode helper

Modules: HDA Codec driver,HDA generic driver

Add common channel-mode helper functions for all codec patches.

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

1 files changed, 17 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index f51a56f813c8..05a88fb1d652 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -102,6 +102,23 @@ int snd_hda_input_mux_put(struct hda_codec *codec, const struct hda_input_mux *i
                           snd_ctl_elem_value_t *ucontrol, hda_nid_t nid,
                           unsigned int *cur_val);
 
+ /*
+ * Channel mode helper
+ */
+struct hda_channel_mode {
+        int channels;
+        const struct hda_verb *sequence;
+};
+
+int snd_hda_ch_mode_info(struct hda_codec *codec, snd_ctl_elem_info_t *uinfo,
+                         const struct hda_channel_mode *chmode, int num_chmodes);
+int snd_hda_ch_mode_get(struct hda_codec *codec, snd_ctl_elem_value_t *ucontrol,
+                        const struct hda_channel_mode *chmode, int num_chmodes,
+                        int max_channels);
+int snd_hda_ch_mode_put(struct hda_codec *codec, snd_ctl_elem_value_t *ucontrol,
+                        const struct hda_channel_mode *chmode, int num_chmodes,
+                        int *max_channelsp);
+
 /*
  * Multi-channel / digital-out PCM helper
  */