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