/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ #ifndef __UAPI_SOUND_TLV_H #define __UAPI_SOUND_TLV_H #define SNDRV_CTL_TLVT_CONTAINER … #define SNDRV_CTL_TLVT_DB_SCALE … #define SNDRV_CTL_TLVT_DB_LINEAR … #define SNDRV_CTL_TLVT_DB_RANGE … #define SNDRV_CTL_TLVT_DB_MINMAX … #define SNDRV_CTL_TLVT_DB_MINMAX_MUTE … /* * channel-mapping TLV items * TLV length must match with num_channels */ #define SNDRV_CTL_TLVT_CHMAP_FIXED … #define SNDRV_CTL_TLVT_CHMAP_VAR … #define SNDRV_CTL_TLVT_CHMAP_PAIRED … /* * TLV structure is right behind the struct snd_ctl_tlv: * unsigned int type - see SNDRV_CTL_TLVT_* * unsigned int length * .... data aligned to sizeof(unsigned int), use * block_length = (length + (sizeof(unsigned int) - 1)) & * ~(sizeof(unsigned int) - 1)) .... */ #define SNDRV_CTL_TLVD_ITEM(type, ...) … #define SNDRV_CTL_TLVD_LENGTH(...) … /* Accessor offsets for TLV data items */ #define SNDRV_CTL_TLVO_TYPE … #define SNDRV_CTL_TLVO_LEN … #define SNDRV_CTL_TLVD_CONTAINER_ITEM(...) … #define SNDRV_CTL_TLVD_DECLARE_CONTAINER(name, ...) … #define SNDRV_CTL_TLVD_DB_SCALE_MASK … #define SNDRV_CTL_TLVD_DB_SCALE_MUTE … #define SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) … #define SNDRV_CTL_TLVD_DECLARE_DB_SCALE(name, min, step, mute) … /* Accessor offsets for min, mute and step items in dB scale type TLV */ #define SNDRV_CTL_TLVO_DB_SCALE_MIN … #define SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP … /* dB scale specified with min/max values instead of step */ #define SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) … #define SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) … #define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(name, min_dB, max_dB) … #define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX_MUTE(name, min_dB, max_dB) … /* Accessor offsets for min, max items in db-minmax types of TLV. */ #define SNDRV_CTL_TLVO_DB_MINMAX_MIN … #define SNDRV_CTL_TLVO_DB_MINMAX_MAX … /* linear volume between min_dB and max_dB (.01dB unit) */ #define SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) … #define SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(name, min_dB, max_dB) … /* Accessor offsets for min, max items in db-linear type of TLV. */ #define SNDRV_CTL_TLVO_DB_LINEAR_MIN … #define SNDRV_CTL_TLVO_DB_LINEAR_MAX … /* dB range container: * Items in dB range container must be ordered by their values and by their * dB values. This implies that larger values must correspond with larger * dB values (which is also required for all other mixer controls). */ /* Each item is: <min> <max> <TLV> */ #define SNDRV_CTL_TLVD_DB_RANGE_ITEM(...) … #define SNDRV_CTL_TLVD_DECLARE_DB_RANGE(name, ...) … #define SNDRV_CTL_TLVD_DB_GAIN_MUTE … #endif
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