ALSA: hda: Input port AMP controls
Added support for controlling hardware gain amps on input ports
using a volume control mixer with a mux selecting the port being controlled.
Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 5c9e578..d688f50 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -418,4 +418,13 @@
hda_nid_t nid);
#endif /* CONFIG_SND_HDA_POWER_SAVE */
+/*
+ * AMP control callbacks
+ */
+/* retrieve parameters from private_value */
+#define get_amp_nid(kc) ((kc)->private_value & 0xffff)
+#define get_amp_channels(kc) (((kc)->private_value >> 16) & 0x3)
+#define get_amp_direction(kc) (((kc)->private_value >> 18) & 0x1)
+#define get_amp_index(kc) (((kc)->private_value >> 19) & 0xf)
+
#endif /* __SOUND_HDA_LOCAL_H */