diff options
Diffstat (limited to 'include/sound/tlv.h')
| -rw-r--r-- | include/sound/tlv.h | 106 |
1 files changed, 25 insertions, 81 deletions
diff --git a/include/sound/tlv.h b/include/sound/tlv.h index e11e179420a1..5cff33a2d1e1 100644 --- a/include/sound/tlv.h +++ b/include/sound/tlv.h @@ -1,101 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_TLV_H #define __SOUND_TLV_H /* * Advanced Linux Sound Architecture - ALSA - Driver * Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ -/* - * 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_TLVT_CONTAINER 0 /* one level down - group of TLVs */ -#define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */ -#define SNDRV_CTL_TLVT_DB_LINEAR 2 /* linear volume */ -#define SNDRV_CTL_TLVT_DB_RANGE 3 /* dB range container */ -#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */ -#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */ +#include <uapi/sound/tlv.h> -#define TLV_ITEM(type, ...) \ - (type), TLV_LENGTH(__VA_ARGS__), __VA_ARGS__ -#define TLV_LENGTH(...) \ - ((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ })) +/* For historical reasons, these macros are aliases to the ones in UAPI. */ +#define TLV_ITEM SNDRV_CTL_TLVD_ITEM +#define TLV_LENGTH SNDRV_CTL_TLVD_LENGTH -#define TLV_CONTAINER_ITEM(...) \ - TLV_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__) -#define DECLARE_TLV_CONTAINER(name, ...) \ - unsigned int name[] = { TLV_CONTAINER_ITEM(__VA_ARGS__) } +#define TLV_CONTAINER_ITEM SNDRV_CTL_TLVD_CONTAINER_ITEM +#define DECLARE_TLV_CONTAINER SNDRV_CTL_TLVD_DECLARE_CONTAINER -#define TLV_DB_SCALE_MASK 0xffff -#define TLV_DB_SCALE_MUTE 0x10000 -#define TLV_DB_SCALE_ITEM(min, step, mute) \ - TLV_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \ - (min), \ - ((step) & TLV_DB_SCALE_MASK) | \ - ((mute) ? TLV_DB_SCALE_MUTE : 0)) -#define DECLARE_TLV_DB_SCALE(name, min, step, mute) \ - unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) } +#define TLV_DB_SCALE_MASK SNDRV_CTL_TLVD_DB_SCALE_MASK +#define TLV_DB_SCALE_MUTE SNDRV_CTL_TLVD_DB_SCALE_MUTE +#define TLV_DB_SCALE_ITEM SNDRV_CTL_TLVD_DB_SCALE_ITEM +#define DECLARE_TLV_DB_SCALE SNDRV_CTL_TLVD_DECLARE_DB_SCALE -/* dB scale specified with min/max values instead of step */ -#define TLV_DB_MINMAX_ITEM(min_dB, max_dB) \ - TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB)) -#define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ - TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB)) -#define DECLARE_TLV_DB_MINMAX(name, min_dB, max_dB) \ - unsigned int name[] = { TLV_DB_MINMAX_ITEM(min_dB, max_dB) } -#define DECLARE_TLV_DB_MINMAX_MUTE(name, min_dB, max_dB) \ - unsigned int name[] = { TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) } +#define TLV_DB_MINMAX_ITEM SNDRV_CTL_TLVD_DB_MINMAX_ITEM +#define TLV_DB_MINMAX_MUTE_ITEM SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM +#define DECLARE_TLV_DB_MINMAX SNDRV_CTL_TLVD_DECLARE_DB_MINMAX +#define DECLARE_TLV_DB_MINMAX_MUTE SNDRV_CTL_TLVD_DECLARE_DB_MINMAX_MUTE -/* linear volume between min_dB and max_dB (.01dB unit) */ -#define TLV_DB_LINEAR_ITEM(min_dB, max_dB) \ - TLV_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB)) -#define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \ - unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) } +#define TLV_DB_LINEAR_ITEM SNDRV_CTL_TLVD_DB_LINEAR_ITEM +#define DECLARE_TLV_DB_LINEAR SNDRV_CTL_TLVD_DECLARE_DB_LINEAR -/* 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 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) +#define TLV_DB_RANGE_ITEM SNDRV_CTL_TLVD_DB_RANGE_ITEM +#define DECLARE_TLV_DB_RANGE SNDRV_CTL_TLVD_DECLARE_DB_RANGE -#define TLV_DB_GAIN_MUTE -9999999 +#define TLV_DB_GAIN_MUTE SNDRV_CTL_TLVD_DB_GAIN_MUTE /* - * channel-mapping TLV items - * TLV length must match with num_channels + * The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR. + * This is an old fasion and obsoleted by commit bf1d1c9b6179("ALSA: tlv: add + * DECLARE_TLV_DB_RANGE()"). */ -#define SNDRV_CTL_TLVT_CHMAP_FIXED 0x101 /* fixed channel position */ -#define SNDRV_CTL_TLVT_CHMAP_VAR 0x102 /* channels freely swappable */ -#define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103 /* pair-wise swappable */ +#define TLV_DB_RANGE_HEAD(num) \ + SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int) #endif /* __SOUND_TLV_H */ |