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/*
* tascam.h - a part of driver for TASCAM FireWire series
*
* Copyright (c) 2015 Takashi Sakamoto
*
* Licensed under the terms of the GNU General Public License, version 2.
*/
#ifndef SOUND_TASCAM_H_INCLUDED
#define SOUND_TASCAM_H_INCLUDED
#include <linux/device.h>
#include <linux/firewire.h>
#include <linux/firewire-constants.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/compat.h>
#include <linux/sched/signal.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/firewire.h>
#include <sound/hwdep.h>
#include <sound/rawmidi.h>
#include "../lib.h"
#include "../amdtp-stream.h"
#include "../iso-resources.h"
struct snd_tscm_spec {
const char *const name;
bool has_adat;
bool has_spdif;
unsigned int pcm_capture_analog_channels;
unsigned int pcm_playback_analog_channels;
unsigned int midi_capture_ports;
unsigned int midi_playback_ports;
};
#define TSCM_MIDI_IN_PORT_MAX 4
#define TSCM_MIDI_OUT_PORT_MAX 4
struct snd_fw_async_midi_port {
struct fw_device *parent;
struct work_struct work;
bool idling;
ktime_t next_ktime;
bool error;
struct fw_transaction transaction;
u8 buf[4];
u8 running_status;
bool on_sysex;
struct snd_rawmidi_substream *substream;
int consume_bytes;
};
#define SND_TSCM_QUEUE_COUNT 16
struct snd_tscm {
struct snd_card *card;
struct fw_unit *unit;
struct mutex mutex;
spinlock_t lock;
bool registered;
struct delayed_work dwork;
const struct snd_tscm_spec *spec;
struct fw_iso_resources tx_resources;
struct fw_iso_resources rx_resources;
struct amdtp_stream tx_stream;
struct amdtp_stream rx_stream;
unsigned int substreams_counter;
int dev_lock_count;
bool dev_lock_changed;
wait_queue_head_t hwdep_wait;
/* For MIDI message incoming transactions. */
struct fw_address_handler async_handler;
struct snd_rawmidi_substream *tx_midi_substreams[TSCM_MIDI_IN_PORT_MAX];
/* For MIDI message outgoing transactions. */
struct snd_fw_async_midi_port out_ports[TSCM_MIDI_OUT_PORT_MAX];
// A cache of status information in tx isoc packets.
__be32 state[SNDRV_FIREWIRE_TASCAM_STATE_COUNT];
struct snd_hwdep *hwdep;
struct snd_firewire_tascam_change queue[SND_TSCM_QUEUE_COUNT];
unsigned int pull_pos;
unsigned int push_pos;
};
#define TSCM_ADDR_BASE 0xffff00000000ull
#define TSCM_OFFSET_FIRMWARE_REGISTER 0x0000
#define TSCM_OFFSET_FIRMWARE_FPGA 0x0004
#define TSCM_OFFSET_FIRMWARE_ARM 0x0008
#define TSCM_OFFSET_FIRMWARE_HW 0x000c
#define TSCM_OFFSET_ISOC_TX_CH 0x0200
#define TSCM_OFFSET_UNKNOWN 0x0204
#define TSCM_OFFSET_START_STREAMING 0x0208
#define TSCM_OFFSET_ISOC_RX_CH 0x020c
#define TSCM_OFFSET_ISOC_RX_ON 0x0210 /* Little conviction. */
#define TSCM_OFFSET_TX_PCM_CHANNELS 0x0214
#define TSCM_OFFSET_RX_PCM_CHANNELS 0x0218
#define TSCM_OFFSET_MULTIPLEX_MODE 0x021c
#define TSCM_OFFSET_ISOC_TX_ON 0x0220
/* Unknown 0x0224 */
#define TSCM_OFFSET_CLOCK_STATUS 0x0228
#define TSCM_OFFSET_SET_OPTION 0x022c
#define TSCM_OFFSET_MIDI_TX_ON 0x0300
#define TSCM_OFFSET_MIDI_TX_ADDR_HI 0x0304
#define TSCM_OFFSET_MIDI_TX_ADDR_LO 0x0308
#define TSCM_OFFSET_LED_POWER 0x0404
#define TSCM_OFFSET_MIDI_RX_QUAD 0x4000
enum snd_tscm_clock {
SND_TSCM_CLOCK_INTERNAL = 0,
SND_TSCM_CLOCK_WORD = 1,
SND_TSCM_CLOCK_SPDIF = 2,
SND_TSCM_CLOCK_ADAT = 3,
};
int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir, unsigned int pcm_channels);
int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate);
int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s,
struct snd_pcm_runtime *runtime);
int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate);
int snd_tscm_stream_get_clock(struct snd_tscm *tscm,
enum snd_tscm_clock *clock);
int snd_tscm_stream_init_duplex(struct snd_tscm *tscm);
void snd_tscm_stream_update_duplex(struct snd_tscm *tscm);
void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm);
int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate);
void snd_tscm_stream_release_duplex(struct snd_tscm *tscm);
int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate);
void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm);
void snd_tscm_stream_lock_changed(struct snd_tscm *tscm);
int snd_tscm_stream_lock_try(struct snd_tscm *tscm);
void snd_tscm_stream_lock_release(struct snd_tscm *tscm);
void snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port);
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;
schedule_work(&port->work);
}
}
static inline void
snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port)
{
port->substream = NULL;
cancel_work_sync(&port->work);
port->error = false;
}
int snd_tscm_transaction_register(struct snd_tscm *tscm);
int snd_tscm_transaction_reregister(struct snd_tscm *tscm);
void snd_tscm_transaction_unregister(struct snd_tscm *tscm);
void snd_tscm_proc_init(struct snd_tscm *tscm);
int snd_tscm_create_pcm_devices(struct snd_tscm *tscm);
int snd_tscm_create_midi_devices(struct snd_tscm *tscm);
int snd_tscm_create_hwdep_device(struct snd_tscm *tscm);
#endif
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