From: Clemens Ladisch <clemens@ladisch.de>
Date: Sun, 20 Nov 2011 16:17:35 +0000 (+0100)
Subject: ALSA: tlv: add DECLARE_TLV_DB_RANGE()
X-Git-Tag: v3.12-rc1~2171^2~122^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bf1d1c9b6179faa3bc32cee882462bc8eebde25d;p=kernel%2Fkernel-generic.git

ALSA: tlv: add DECLARE_TLV_DB_RANGE()

Add a DECLARE_TLV_DB_RANGE() macro so that dB range information
can be specified without having to count the items manually for
TLV_DB_RANGE_HEAD().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/include/sound/tlv.h b/include/sound/tlv.h
index a9ff3db..a64d8fe 100644
--- a/include/sound/tlv.h
+++ b/include/sound/tlv.h
@@ -76,6 +76,10 @@
 
 /* dB range container */
 /* Each item is: <min> <max> <TLV> */
+#define TLV_DB_RANGE_ITEM(...) \
+	TLV_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__)
+#define DECLARE_TLV_DB_RANGE(name, ...) \
+	unsigned int name[] = { TLV_DB_RANGE_ITEM(__VA_ARGS__) }
 /* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */
 #define TLV_DB_RANGE_HEAD(num)			\
 	SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int)