diff options
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/asound.h | 9 | ||||
| -rw-r--r-- | include/sound/control.h | 2 | ||||
| -rw-r--r-- | include/sound/tlv.h | 43 |
3 files changed, 53 insertions, 1 deletions
diff --git a/include/sound/asound.h b/include/sound/asound.h index 41885f48ad91..76a20406bd18 100644 --- a/include/sound/asound.h +++ b/include/sound/asound.h @@ -688,7 +688,7 @@ struct snd_timer_tread { * * ****************************************************************************/ -#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 3) +#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 4) struct snd_ctl_card_info { int card; /* card number */ @@ -818,6 +818,12 @@ struct snd_ctl_elem_value { unsigned char reserved[128-sizeof(struct timespec)]; }; +struct snd_ctl_tlv { + unsigned int numid; /* control element numeric identification */ + unsigned int length; /* in bytes aligned to 4 */ + unsigned int tlv[0]; /* first TLV */ +}; + enum { SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int), SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info), @@ -831,6 +837,7 @@ enum { SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info), SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info), SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id), + SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct snd_ctl_tlv), SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int), SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info), SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int), diff --git a/include/sound/control.h b/include/sound/control.h index 2489b1eb0110..a93a58d0e688 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -42,6 +42,7 @@ struct snd_kcontrol_new { snd_kcontrol_info_t *info; snd_kcontrol_get_t *get; snd_kcontrol_put_t *put; + unsigned int *tlv; unsigned long private_value; }; @@ -58,6 +59,7 @@ struct snd_kcontrol { snd_kcontrol_info_t *info; snd_kcontrol_get_t *get; snd_kcontrol_put_t *put; + unsigned int *tlv; unsigned long private_value; void *private_data; void (*private_free)(struct snd_kcontrol *kcontrol); diff --git a/include/sound/tlv.h b/include/sound/tlv.h new file mode 100644 index 000000000000..b826e1df1da6 --- /dev/null +++ b/include/sound/tlv.h @@ -0,0 +1,43 @@ +#ifndef __SOUND_TLV_H +#define __SOUND_TLV_H + +/* + * Advanced Linux Sound Architecture - ALSA - Driver + * Copyright (c) 2006 by Jaroslav Kysela <perex@suse.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 DECLARE_TLV_DB_SCALE(name, min, step, mute) \ +unsigned int name[] = { \ + SNDRV_CTL_TLVT_DB_SCALE, 2 * sizeof(unsigned int), \ + (min), ((step) & 0xffff) | ((mute) ? 0x10000 : 0) \ +} + +#endif /* __SOUND_TLV_H */ |