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1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2 3#ifndef __UAPI_SOUND_TLV_H4#define __UAPI_SOUND_TLV_H5 6#define SNDRV_CTL_TLVT_CONTAINER 0 /* one level down - group of TLVs */7#define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */8#define SNDRV_CTL_TLVT_DB_LINEAR 2 /* linear volume */9#define SNDRV_CTL_TLVT_DB_RANGE 3 /* dB range container */10#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */11#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */12 13/*14 * channel-mapping TLV items15 * TLV length must match with num_channels16 */17#define SNDRV_CTL_TLVT_CHMAP_FIXED 0x101 /* fixed channel position */18#define SNDRV_CTL_TLVT_CHMAP_VAR 0x102 /* channels freely swappable */19#define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103 /* pair-wise swappable */20 21/*22 * TLV structure is right behind the struct snd_ctl_tlv:23 * unsigned int type - see SNDRV_CTL_TLVT_*24 * unsigned int length25 * .... data aligned to sizeof(unsigned int), use26 * block_length = (length + (sizeof(unsigned int) - 1)) &27 * ~(sizeof(unsigned int) - 1)) ....28 */29#define SNDRV_CTL_TLVD_ITEM(type, ...) \30 (type), SNDRV_CTL_TLVD_LENGTH(__VA_ARGS__), __VA_ARGS__31#define SNDRV_CTL_TLVD_LENGTH(...) \32 ((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ }))33 34/* Accessor offsets for TLV data items */35#define SNDRV_CTL_TLVO_TYPE 036#define SNDRV_CTL_TLVO_LEN 137 38#define SNDRV_CTL_TLVD_CONTAINER_ITEM(...) \39 SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__)40#define SNDRV_CTL_TLVD_DECLARE_CONTAINER(name, ...) \41 unsigned int name[] = { \42 SNDRV_CTL_TLVD_CONTAINER_ITEM(__VA_ARGS__) \43 }44 45#define SNDRV_CTL_TLVD_DB_SCALE_MASK 0xffff46#define SNDRV_CTL_TLVD_DB_SCALE_MUTE 0x1000047#define SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) \48 SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \49 (min), \50 ((step) & SNDRV_CTL_TLVD_DB_SCALE_MASK) | \51 ((mute) ? SNDRV_CTL_TLVD_DB_SCALE_MUTE : 0))52#define SNDRV_CTL_TLVD_DECLARE_DB_SCALE(name, min, step, mute) \53 unsigned int name[] = { \54 SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) \55 }56 57/* Accessor offsets for min, mute and step items in dB scale type TLV */58#define SNDRV_CTL_TLVO_DB_SCALE_MIN 259#define SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP 360 61/* dB scale specified with min/max values instead of step */62#define SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) \63 SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB))64#define SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \65 SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB))66#define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(name, min_dB, max_dB) \67 unsigned int name[] = { \68 SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) \69 }70#define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX_MUTE(name, min_dB, max_dB) \71 unsigned int name[] = { \72 SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \73 }74 75/* Accessor offsets for min, max items in db-minmax types of TLV. */76#define SNDRV_CTL_TLVO_DB_MINMAX_MIN 277#define SNDRV_CTL_TLVO_DB_MINMAX_MAX 378 79/* linear volume between min_dB and max_dB (.01dB unit) */80#define SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) \81 SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB))82#define SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(name, min_dB, max_dB) \83 unsigned int name[] = { \84 SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) \85 }86 87/* Accessor offsets for min, max items in db-linear type of TLV. */88#define SNDRV_CTL_TLVO_DB_LINEAR_MIN 289#define SNDRV_CTL_TLVO_DB_LINEAR_MAX 390 91/* dB range container:92 * Items in dB range container must be ordered by their values and by their93 * dB values. This implies that larger values must correspond with larger94 * dB values (which is also required for all other mixer controls).95 */96/* Each item is: <min> <max> <TLV> */97#define SNDRV_CTL_TLVD_DB_RANGE_ITEM(...) \98 SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__)99#define SNDRV_CTL_TLVD_DECLARE_DB_RANGE(name, ...) \100 unsigned int name[] = { \101 SNDRV_CTL_TLVD_DB_RANGE_ITEM(__VA_ARGS__) \102 }103 104#define SNDRV_CTL_TLVD_DB_GAIN_MUTE -9999999105 106#endif107