[ALSA] hda-codec - add snd_hda_codec_stereo() function

Added snd_hda_codec_amp_stereo() function that changes both of stereo
channels with the same mask and value bits.  It simplifies most of
amp-handling codes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 7 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 8dec32cfdf54..35ea0cf37a27 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -84,10 +84,17 @@ int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch,
                            int direction, int index);
 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
                              int direction, int idx, int mask, int val);
+int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
+                             int dir, int idx, int mask, int val);
 #ifdef CONFIG_PM
 void snd_hda_codec_resume_amp(struct hda_codec *codec);
 #endif
 
+/* amp value bits */
+#define HDA_AMP_MUTE    0x80
+#define HDA_AMP_UNMUTE  0x00
+#define HDA_AMP_VOLMASK 0x7f
+
 /* mono switch binding multiple inputs */
 #define HDA_BIND_MUTE_MONO(xname, nid, channel, indices, direction) \
         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0,  \