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1#ifndef __SOUND_TLV_H
2#define __SOUND_TLV_H
3
4/*
5 * Advanced Linux Sound Architecture - ALSA - Driver
6 * Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24
25/*
26 * TLV structure is right behind the struct snd_ctl_tlv:
27 * unsigned int type - see SNDRV_CTL_TLVT_*
28 * unsigned int length
29 * .... data aligned to sizeof(unsigned int), use
30 * block_length = (length + (sizeof(unsigned int) - 1)) &
31 * ~(sizeof(unsigned int) - 1)) ....
32 */
33
34#define SNDRV_CTL_TLVT_CONTAINER 0 /* one level down - group of TLVs */
35#define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */
36#define SNDRV_CTL_TLVT_DB_LINEAR 2 /* linear volume */
37#define SNDRV_CTL_TLVT_DB_RANGE 3 /* dB range container */
38#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */
39#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */
40
41#define TLV_DB_SCALE_MASK 0xffff
42#define TLV_DB_SCALE_MUTE 0x10000
43#define TLV_DB_SCALE_ITEM(min, step, mute) \
44 SNDRV_CTL_TLVT_DB_SCALE, 2 * sizeof(unsigned int), \
45 (min), ((step) & TLV_DB_SCALE_MASK) | ((mute) ? TLV_DB_SCALE_MUTE : 0)
46#define DECLARE_TLV_DB_SCALE(name, min, step, mute) \
47 unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) }
48
49/* dB scale specified with min/max values instead of step */
50#define TLV_DB_MINMAX_ITEM(min_dB, max_dB) \
51 SNDRV_CTL_TLVT_DB_MINMAX, 2 * sizeof(unsigned int), \
52 (min_dB), (max_dB)
53#define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \
54 SNDRV_CTL_TLVT_DB_MINMAX_MUTE, 2 * sizeof(unsigned int), \
55 (min_dB), (max_dB)
56#define DECLARE_TLV_DB_MINMAX(name, min_dB, max_dB) \
57 unsigned int name[] = { TLV_DB_MINMAX_ITEM(min_dB, max_dB) }
58#define DECLARE_TLV_DB_MINMAX_MUTE(name, min_dB, max_dB) \
59 unsigned int name[] = { TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) }
60
61/* linear volume between min_dB and max_dB (.01dB unit) */
62#define TLV_DB_LINEAR_ITEM(min_dB, max_dB) \
63 SNDRV_CTL_TLVT_DB_LINEAR, 2 * sizeof(unsigned int), \
64 (min_dB), (max_dB)
65#define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \
66 unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) }
67
68/* dB range container */
69/* Each item is: <min> <max> <TLV> */
70/* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */
71#define TLV_DB_RANGE_HEAD(num) \
72 SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int)
73
74#define TLV_DB_GAIN_MUTE -9999999
75
76#endif /* __SOUND_TLV_H */
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef __SOUND_TLV_H
3#define __SOUND_TLV_H
4
5/*
6 * Advanced Linux Sound Architecture - ALSA - Driver
7 * Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz>
8 */
9
10#include <uapi/sound/tlv.h>
11
12/* For historical reasons, these macros are aliases to the ones in UAPI. */
13#define TLV_ITEM SNDRV_CTL_TLVD_ITEM
14#define TLV_LENGTH SNDRV_CTL_TLVD_LENGTH
15
16#define TLV_CONTAINER_ITEM SNDRV_CTL_TLVD_CONTAINER_ITEM
17#define DECLARE_TLV_CONTAINER SNDRV_CTL_TLVD_DECLARE_CONTAINER
18
19#define TLV_DB_SCALE_MASK SNDRV_CTL_TLVD_DB_SCALE_MASK
20#define TLV_DB_SCALE_MUTE SNDRV_CTL_TLVD_DB_SCALE_MUTE
21#define TLV_DB_SCALE_ITEM SNDRV_CTL_TLVD_DB_SCALE_ITEM
22#define DECLARE_TLV_DB_SCALE SNDRV_CTL_TLVD_DECLARE_DB_SCALE
23
24#define TLV_DB_MINMAX_ITEM SNDRV_CTL_TLVD_DB_MINMAX_ITEM
25#define TLV_DB_MINMAX_MUTE_ITEM SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM
26#define DECLARE_TLV_DB_MINMAX SNDRV_CTL_TLVD_DECLARE_DB_MINMAX
27#define DECLARE_TLV_DB_MINMAX_MUTE SNDRV_CTL_TLVD_DECLARE_DB_MINMAX_MUTE
28
29#define TLV_DB_LINEAR_ITEM SNDRV_CTL_TLVD_DB_LINEAR_ITEM
30#define DECLARE_TLV_DB_LINEAR SNDRV_CTL_TLVD_DECLARE_DB_LINEAR
31
32#define TLV_DB_RANGE_ITEM SNDRV_CTL_TLVD_DB_RANGE_ITEM
33#define DECLARE_TLV_DB_RANGE SNDRV_CTL_TLVD_DECLARE_DB_RANGE
34
35#define TLV_DB_GAIN_MUTE SNDRV_CTL_TLVD_DB_GAIN_MUTE
36
37/*
38 * The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR.
39 * This is an old fasion and obsoleted by commit bf1d1c9b6179("ALSA: tlv: add
40 * DECLARE_TLV_DB_RANGE()").
41 */
42#define TLV_DB_RANGE_HEAD(num) \
43 SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int)
44
45#endif /* __SOUND_TLV_H */