blob: c3768cd494a5f3fe3bb9059bd8e588c73b806c86 [file] [log] [blame]
#include <linux/firewire-constants.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <sound/rawmidi.h>
struct fw_unit;
#define FW_GENERATION_MASK 0x00ff
#define FW_FIXED_GENERATION 0x0100
#define FW_QUIET 0x0200
int snd_fw_transaction(struct fw_unit *unit, int tcode,
u64 offset, void *buffer, size_t length,
unsigned int flags);
/* returns true if retrying the transaction would not make sense */
static inline bool rcode_is_permanent_error(int rcode)
return rcode == RCODE_TYPE_ERROR || rcode == RCODE_ADDRESS_ERROR;
void snd_fw_schedule_registration(struct fw_unit *unit,
struct delayed_work *dwork);
struct snd_fw_async_midi_port;
typedef int (*snd_fw_async_midi_port_fill)(
struct snd_rawmidi_substream *substream,
u8 *buf);
struct snd_fw_async_midi_port {
struct fw_device *parent;
struct work_struct work;
bool idling;
ktime_t next_ktime;
bool error;
u64 addr;
struct fw_transaction transaction;
u8 *buf;
unsigned int len;
struct snd_rawmidi_substream *substream;
snd_fw_async_midi_port_fill fill;
int consume_bytes;
int snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port,
struct fw_unit *unit, u64 addr, unsigned int len,
snd_fw_async_midi_port_fill fill);
void snd_fw_async_midi_port_destroy(struct snd_fw_async_midi_port *port);
* snd_fw_async_midi_port_run - run transactions for the async MIDI port
* @port: the asynchronous MIDI port
* @substream: the MIDI substream
static inline void
snd_fw_async_midi_port_run(struct snd_fw_async_midi_port *port,
struct snd_rawmidi_substream *substream)
if (!port->error) {
port->substream = substream;
* snd_fw_async_midi_port_finish - finish the asynchronous MIDI port
* @port: the asynchronous MIDI port
static inline void
snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port)
port->substream = NULL;
port->error = false;