| From | Ben Hutchings <> | Date | Mon, 18 Jan 2016 03:18:35 +0000 | Subject | [PATCH 3.2 10/70] ALSA: tlv: add DECLARE_TLV_DB_RANGE() |
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3.2.76-rc1 review patch. If anyone has any objections, please let me know.
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From: Clemens Ladisch <clemens@ladisch.de>
commit bf1d1c9b6179faa3bc32cee882462bc8eebde25d upstream.
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> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- include/sound/tlv.h | 4 ++++ 1 file changed, 4 insertions(+)
--- a/include/sound/tlv.h +++ b/include/sound/tlv.h @@ -71,6 +71,10 @@ /* 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)
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