1 #ifndef _UAPI_SOUND_FIREWIRE_H_INCLUDED
2 #define _UAPI_SOUND_FIREWIRE_H_INCLUDED
4 #include <linux/ioctl.h>
5 #include <linux/types.h>
7 /* events can be read() from the hwdep device */
9 #define SNDRV_FIREWIRE_EVENT_LOCK_STATUS 0x000010cc
10 #define SNDRV_FIREWIRE_EVENT_DICE_NOTIFICATION 0xd1ce004e
11 #define SNDRV_FIREWIRE_EVENT_EFW_RESPONSE 0x4e617475
13 struct snd_firewire_event_common {
14 unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */
17 struct snd_firewire_event_lock_status {
19 unsigned int status; /* 0/1 = unlocked/locked */
22 struct snd_firewire_event_dice_notification {
24 unsigned int notification; /* DICE-specific bits */
27 #define SND_EFW_TRANSACTION_USER_SEQNUM_MAX ((__u32)((__u16)~0) - 1)
28 /* each field should be in big endian */
29 struct snd_efw_transaction {
38 struct snd_firewire_event_efw_response {
40 __be32 response[0]; /* some responses */
43 union snd_firewire_event {
44 struct snd_firewire_event_common common;
45 struct snd_firewire_event_lock_status lock_status;
46 struct snd_firewire_event_dice_notification dice_notification;
47 struct snd_firewire_event_efw_response efw_response;
51 #define SNDRV_FIREWIRE_IOCTL_GET_INFO _IOR('H', 0xf8, struct snd_firewire_get_info)
52 #define SNDRV_FIREWIRE_IOCTL_LOCK _IO('H', 0xf9)
53 #define SNDRV_FIREWIRE_IOCTL_UNLOCK _IO('H', 0xfa)
55 #define SNDRV_FIREWIRE_TYPE_DICE 1
56 #define SNDRV_FIREWIRE_TYPE_FIREWORKS 2
57 #define SNDRV_FIREWIRE_TYPE_BEBOB 3
58 /* AV/C, RME, MOTU, ... */
60 struct snd_firewire_get_info {
61 unsigned int type; /* SNDRV_FIREWIRE_TYPE_xxx */
62 unsigned int card; /* same as fw_cdev_get_info.card */
63 unsigned char guid[8];
64 char device_name[16]; /* device node in /dev */
68 * SNDRV_FIREWIRE_IOCTL_LOCK prevents the driver from streaming.
69 * Returns -EBUSY if the driver is already streaming.
72 #endif /* _UAPI_SOUND_FIREWIRE_H_INCLUDED */