include/uapi/sound/firewire.h

   1 #ifndef _UAPI_SOUND_FIREWIRE_H_INCLUDED
   2 #define _UAPI_SOUND_FIREWIRE_H_INCLUDED
   3
   4 #include <linux/ioctl.h>
   5 #include <linux/types.h>
   6
   7 /* events can be read() from the hwdep device */
   8
   9 #define SNDRV_FIREWIRE_EVENT_LOCK_STATUS        0x000010cc
  10 #define SNDRV_FIREWIRE_EVENT_DICE_NOTIFICATION  0xd1ce004e
  11 #define SNDRV_FIREWIRE_EVENT_EFW_RESPONSE       0x4e617475
  12
  13 struct snd_firewire_event_common {
  14         unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */
  15 };
  16
  17 struct snd_firewire_event_lock_status {
  18         unsigned int type;
  19         unsigned int status; /* 0/1 = unlocked/locked */
  20 };
  21
  22 struct snd_firewire_event_dice_notification {
  23         unsigned int type;
  24         unsigned int notification; /* DICE-specific bits */
  25 };
  26
  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 {
  30         __be32 length;
  31         __be32 version;
  32         __be32 seqnum;
  33         __be32 category;
  34         __be32 command;
  35         __be32 status;
  36         __be32 params[0];
  37 };
  38 struct snd_firewire_event_efw_response {
  39         unsigned int type;
  40         __be32 response[0];     /* some responses */
  41 };
  42
  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;
  48 };
  49
  50
  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)
  54
  55 #define SNDRV_FIREWIRE_TYPE_DICE        1
  56 #define SNDRV_FIREWIRE_TYPE_FIREWORKS   2
  57 #define SNDRV_FIREWIRE_TYPE_BEBOB       3
  58 #define SNDRV_FIREWIRE_TYPE_OXFW        4
  59 /* RME, MOTU, ... */
  60
  61 struct snd_firewire_get_info {
  62         unsigned int type; /* SNDRV_FIREWIRE_TYPE_xxx */
  63         unsigned int card; /* same as fw_cdev_get_info.card */
  64         unsigned char guid[8];
  65         char device_name[16]; /* device node in /dev */
  66 };
  67
  68 /*
  69  * SNDRV_FIREWIRE_IOCTL_LOCK prevents the driver from streaming.
  70  * Returns -EBUSY if the driver is already streaming.
  71  */
  72
  73 #endif /* _UAPI_SOUND_FIREWIRE_H_INCLUDED */