Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit bf1d1c9b authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Takashi Iwai
Browse files

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: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 570aef5d

include/sound/tlv.h

+4 −0
Original line number Diff line number Diff line
@@ -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)