LXR linux/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
  13struct snd_firewire_event_common {
  14        unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */
  15};
  16
  17struct snd_firewire_event_lock_status {
  18        unsigned int type;
  19        unsigned int status; /* 0/1 = unlocked/locked */
  20};
  21
  22struct 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 */
  29struct 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};
  38struct snd_firewire_event_efw_response {
  39        unsigned int type;
  40        __be32 response[0];     /* some responses */
  41};
  42
  43union 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
  61struct 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 */
  74