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-rw-r--r--include/sound/tlv.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/sound/tlv.h b/include/sound/tlv.h
index 9fd5b19..7067e2d 100644
--- a/include/sound/tlv.h
+++ b/include/sound/tlv.h
@@ -38,9 +38,11 @@
#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */
#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */
+#define TLV_DB_SCALE_MASK 0xffff
+#define TLV_DB_SCALE_MUTE 0x10000
#define TLV_DB_SCALE_ITEM(min, step, mute) \
SNDRV_CTL_TLVT_DB_SCALE, 2 * sizeof(unsigned int), \
- (min), ((step) & 0xffff) | ((mute) ? 0x10000 : 0)
+ (min), ((step) & TLV_DB_SCALE_MASK) | ((mute) ? TLV_DB_SCALE_MUTE : 0)
#define DECLARE_TLV_DB_SCALE(name, min, step, mute) \
unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) }