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e5e0c3dd25
This commit adds hwdep interface so as the other IEEE 1394 sound devices has. This interface is designed for mixer/control applications. By using this interface, an application can get information about firewire node, can lock/unlock kernel streaming and can get notification at starting/stopping kernel streaming. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
#ifndef _UAPI_SOUND_FIREWIRE_H_INCLUDED
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#define _UAPI_SOUND_FIREWIRE_H_INCLUDED
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#include <linux/ioctl.h>
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#include <linux/types.h>
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/* events can be read() from the hwdep device */
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#define SNDRV_FIREWIRE_EVENT_LOCK_STATUS 0x000010cc
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#define SNDRV_FIREWIRE_EVENT_DICE_NOTIFICATION 0xd1ce004e
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#define SNDRV_FIREWIRE_EVENT_EFW_RESPONSE 0x4e617475
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#define SNDRV_FIREWIRE_EVENT_DIGI00X_MESSAGE 0x746e736c
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struct snd_firewire_event_common {
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unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */
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};
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struct snd_firewire_event_lock_status {
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unsigned int type;
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unsigned int status; /* 0/1 = unlocked/locked */
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};
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struct snd_firewire_event_dice_notification {
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unsigned int type;
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unsigned int notification; /* DICE-specific bits */
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};
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#define SND_EFW_TRANSACTION_USER_SEQNUM_MAX ((__u32)((__u16)~0) - 1)
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/* each field should be in big endian */
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struct snd_efw_transaction {
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__be32 length;
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__be32 version;
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__be32 seqnum;
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__be32 category;
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__be32 command;
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__be32 status;
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__be32 params[0];
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};
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struct snd_firewire_event_efw_response {
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unsigned int type;
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__be32 response[0]; /* some responses */
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};
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struct snd_firewire_event_digi00x_message {
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unsigned int type;
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__u32 message; /* Digi00x-specific message */
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};
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union snd_firewire_event {
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struct snd_firewire_event_common common;
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struct snd_firewire_event_lock_status lock_status;
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struct snd_firewire_event_dice_notification dice_notification;
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struct snd_firewire_event_efw_response efw_response;
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struct snd_firewire_event_digi00x_message digi00x_message;
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};
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#define SNDRV_FIREWIRE_IOCTL_GET_INFO _IOR('H', 0xf8, struct snd_firewire_get_info)
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#define SNDRV_FIREWIRE_IOCTL_LOCK _IO('H', 0xf9)
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#define SNDRV_FIREWIRE_IOCTL_UNLOCK _IO('H', 0xfa)
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#define SNDRV_FIREWIRE_TYPE_DICE 1
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#define SNDRV_FIREWIRE_TYPE_FIREWORKS 2
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#define SNDRV_FIREWIRE_TYPE_BEBOB 3
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#define SNDRV_FIREWIRE_TYPE_OXFW 4
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#define SNDRV_FIREWIRE_TYPE_DIGI00X 5
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#define SNDRV_FIREWIRE_TYPE_TASCAM 6
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/* RME, MOTU, ... */
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struct snd_firewire_get_info {
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unsigned int type; /* SNDRV_FIREWIRE_TYPE_xxx */
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unsigned int card; /* same as fw_cdev_get_info.card */
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unsigned char guid[8];
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char device_name[16]; /* device node in /dev */
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};
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/*
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* SNDRV_FIREWIRE_IOCTL_LOCK prevents the driver from streaming.
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* Returns -EBUSY if the driver is already streaming.
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*/
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#endif /* _UAPI_SOUND_FIREWIRE_H_INCLUDED */
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