As a start point for further development, this is an incomplete driver for DICE devices: - only playback (so no clock source except the bus clock) - only 44.1 kHz - no MIDI - recovery after bus reset is slow - hwdep device is created, but not actually implemented Contains compilation fixes by Stefan Richter.
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| @@ -5,6 +5,7 @@ header-y += asound_fm.h · 4 unmodified lines | ||
| 5 | 5 | header-y += compress_offload.h |
| 6 | 6 | header-y += compress_params.h |
| 7 | 7 | header-y += emu10k1.h |
| 8 | +header-y += firewire.h | |
| 8 | 9 | header-y += hdsp.h |
| 9 | 10 | header-y += hdspm.h |
| 10 | 11 | header-y += sb16_csp.h |
| @@ -93,9 +93,10 @@ enum { · 92 unmodified lines | ||
| 93 | 93 | SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */ |
| 94 | 94 | SNDRV_HWDEP_IFACE_HDA, /* HD-audio */ |
| 95 | 95 | SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */ |
| 96 | + SNDRV_HWDEP_IFACE_FW_DICE, /* TC DICE FireWire device */ | |
| 96 | 97 | |
| 97 | 98 | /* Don't forget to change the following: */ |
| 98 | − SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM | |
| 99 | + SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_DICE | |
| 99 | 100 | }; |
| 100 | 101 | |
| 101 | 102 | struct snd_hwdep_info { |
| @@ -0,0 +1,51 @@ | ||
| 1 | +#ifndef UAPI_SOUND_FIREWIRE_H_INCLUDED | |
| 2 | +#define UAPI_SOUND_FIREWIRE_H_INCLUDED | |
| 3 | + | |
| 4 | +#include <linux/ioctl.h> | |
| 5 | + | |
| 6 | +/* events can be read() from the hwdep device */ | |
| 7 | + | |
| 8 | +#define SNDRV_FIREWIRE_EVENT_LOCK_STATUS 0x000010cc | |
| 9 | +#define SNDRV_FIREWIRE_EVENT_DICE_NOTIFICATION 0xd1ce004e | |
| 10 | + | |
| 11 | +struct snd_firewire_event_common { | |
| 12 | + unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */ | |
| 13 | +}; | |
| 14 | + | |
| 15 | +struct snd_firewire_event_lock_status { | |
| 16 | + unsigned int type; | |
| 17 | + unsigned int status; /* 0/1 = unlocked/locked */ | |
| 18 | +}; | |
| 19 | + | |
| 20 | +struct snd_firewire_event_dice_notification { | |
| 21 | + unsigned int type; | |
| 22 | + unsigned int notification; /* DICE-specific bits */ | |
| 23 | +}; | |
| 24 | + | |
| 25 | +union snd_firewire_event { | |
| 26 | + struct snd_firewire_event_common common; | |
| 27 | + struct snd_firewire_event_lock_status lock_status; | |
| 28 | + struct snd_firewire_event_dice_notification dice_notification; | |
| 29 | +}; | |
| 30 | + | |
| 31 | + | |
| 32 | +#define SNDRV_FIREWIRE_IOCTL_GET_INFO _IOR('H', 0xf8, struct snd_firewire_get_info) | |
| 33 | +#define SNDRV_FIREWIRE_IOCTL_LOCK _IO('H', 0xf9) | |
| 34 | +#define SNDRV_FIREWIRE_IOCTL_UNLOCK _IO('H', 0xfa) | |
| 35 | + | |
| 36 | +#define SNDRV_FIREWIRE_TYPE_DICE 1 | |
| 37 | +/* Fireworks, AV/C, RME, MOTU, ... */ | |
| 38 | + | |
| 39 | +struct snd_firewire_get_info { | |
| 40 | + unsigned int type; /* SNDRV_FIREWIRE_TYPE_xxx */ | |
| 41 | + unsigned int card; /* same as fw_cdev_get_info.card */ | |
| 42 | + unsigned char guid[8]; | |
| 43 | + char device_name[16]; /* device node in /dev */ | |
| 44 | +}; | |
| 45 | + | |
| 46 | +/* | |
| 47 | + * SNDRV_FIREWIRE_IOCTL_LOCK prevents the driver from streaming. | |
| 48 | + * Returns -EBUSY if the driver is already streaming. | |
| 49 | + */ | |
| 50 | + | |
| 51 | +#endif | |