151 lines
4.2 KiB
C
151 lines
4.2 KiB
C
/*
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* ff.h - a part of driver for RME Fireface series
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*
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* Copyright (c) 2015-2017 Takashi Sakamoto
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#ifndef SOUND_FIREFACE_H_INCLUDED
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#define SOUND_FIREFACE_H_INCLUDED
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#include <linux/device.h>
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#include <linux/firewire.h>
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#include <linux/firewire-constants.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/compat.h>
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#include <linux/sched/signal.h>
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#include <sound/core.h>
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#include <sound/info.h>
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#include <sound/rawmidi.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/hwdep.h>
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#include <sound/firewire.h>
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#include "../lib.h"
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#include "../amdtp-stream.h"
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#include "../iso-resources.h"
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#define SND_FF_STREAM_MODES 3
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#define SND_FF_MAXIMIM_MIDI_QUADS 9
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#define SND_FF_IN_MIDI_PORTS 2
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#define SND_FF_OUT_MIDI_PORTS 2
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#define SND_FF_REG_SYNC_STATUS 0x0000801c0000ull
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/* For block wriet request. */
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#define SND_FF_REG_FETCH_PCM_FRAMES 0x0000801c0000ull
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#define SND_FF_REG_CLOCK_CONFIG 0x0000801c0004ull
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enum snd_ff_reg_type {
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SND_FF_REG_TYPE_MIDI_HIGH_ADDR = 0,
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SND_FF_REG_TYPE_COUNT,
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};
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struct snd_ff_protocol;
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struct snd_ff_spec {
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const char *const name;
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const unsigned int pcm_capture_channels[SND_FF_STREAM_MODES];
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const unsigned int pcm_playback_channels[SND_FF_STREAM_MODES];
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unsigned int midi_in_ports;
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unsigned int midi_out_ports;
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const struct snd_ff_protocol *protocol;
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u64 regs[SND_FF_REG_TYPE_COUNT];
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};
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struct snd_ff {
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struct snd_card *card;
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struct fw_unit *unit;
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struct mutex mutex;
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spinlock_t lock;
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bool registered;
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struct delayed_work dwork;
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const struct snd_ff_spec *spec;
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/* To handle MIDI tx. */
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struct snd_rawmidi_substream *tx_midi_substreams[SND_FF_IN_MIDI_PORTS];
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struct fw_address_handler async_handler;
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/* TO handle MIDI rx. */
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struct snd_rawmidi_substream *rx_midi_substreams[SND_FF_OUT_MIDI_PORTS];
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u8 running_status[SND_FF_OUT_MIDI_PORTS];
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__le32 msg_buf[SND_FF_OUT_MIDI_PORTS][SND_FF_MAXIMIM_MIDI_QUADS];
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struct work_struct rx_midi_work[SND_FF_OUT_MIDI_PORTS];
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struct fw_transaction transactions[SND_FF_OUT_MIDI_PORTS];
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ktime_t next_ktime[SND_FF_OUT_MIDI_PORTS];
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bool rx_midi_error[SND_FF_OUT_MIDI_PORTS];
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unsigned int rx_bytes[SND_FF_OUT_MIDI_PORTS];
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unsigned int substreams_counter;
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struct amdtp_stream tx_stream;
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struct amdtp_stream rx_stream;
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struct fw_iso_resources tx_resources;
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struct fw_iso_resources rx_resources;
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int dev_lock_count;
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bool dev_lock_changed;
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wait_queue_head_t hwdep_wait;
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};
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enum snd_ff_clock_src {
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SND_FF_CLOCK_SRC_INTERNAL,
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SND_FF_CLOCK_SRC_SPDIF,
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SND_FF_CLOCK_SRC_ADAT1,
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SND_FF_CLOCK_SRC_ADAT2,
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SND_FF_CLOCK_SRC_WORD,
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SND_FF_CLOCK_SRC_LTC,
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/* TODO: perhaps TCO exists. */
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};
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struct snd_ff_protocol {
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void (*handle_midi_msg)(struct snd_ff *ff, __le32 *buf, size_t length);
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int (*begin_session)(struct snd_ff *ff, unsigned int rate);
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void (*finish_session)(struct snd_ff *ff);
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int (*switch_fetching_mode)(struct snd_ff *ff, bool enable);
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};
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extern const struct snd_ff_protocol snd_ff_protocol_ff400;
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int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate,
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enum snd_ff_clock_src *src);
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int snd_ff_transaction_register(struct snd_ff *ff);
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int snd_ff_transaction_reregister(struct snd_ff *ff);
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void snd_ff_transaction_unregister(struct snd_ff *ff);
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int amdtp_ff_set_parameters(struct amdtp_stream *s, unsigned int rate,
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unsigned int pcm_channels);
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int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s,
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struct snd_pcm_runtime *runtime);
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int amdtp_ff_init(struct amdtp_stream *s, struct fw_unit *unit,
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enum amdtp_stream_direction dir);
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int snd_ff_stream_init_duplex(struct snd_ff *ff);
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void snd_ff_stream_destroy_duplex(struct snd_ff *ff);
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int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate);
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void snd_ff_stream_stop_duplex(struct snd_ff *ff);
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void snd_ff_stream_update_duplex(struct snd_ff *ff);
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void snd_ff_stream_lock_changed(struct snd_ff *ff);
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int snd_ff_stream_lock_try(struct snd_ff *ff);
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void snd_ff_stream_lock_release(struct snd_ff *ff);
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void snd_ff_proc_init(struct snd_ff *ff);
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int snd_ff_create_midi_devices(struct snd_ff *ff);
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int snd_ff_create_pcm_devices(struct snd_ff *ff);
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int snd_ff_create_hwdep_devices(struct snd_ff *ff);
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#endif
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