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Diffstat (limited to '')
| -rw-r--r-- | sound/firewire/fireface/ff.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h new file mode 100644 index 000000000..705e7df4f --- /dev/null +++ b/sound/firewire/fireface/ff.h @@ -0,0 +1,169 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * ff.h - a part of driver for RME Fireface series + * + * Copyright (c) 2015-2017 Takashi Sakamoto + */ + +#ifndef SOUND_FIREFACE_H_INCLUDED +#define SOUND_FIREFACE_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/info.h> +#include <sound/rawmidi.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/hwdep.h> +#include <sound/firewire.h> + +#include "../lib.h" +#include "../amdtp-stream.h" +#include "../iso-resources.h" + +#define SND_FF_MAXIMIM_MIDI_QUADS 9 +#define SND_FF_IN_MIDI_PORTS 2 +#define SND_FF_OUT_MIDI_PORTS 2 + +enum snd_ff_unit_version { + SND_FF_UNIT_VERSION_FF800 = 0x000001, + SND_FF_UNIT_VERSION_FF400 = 0x000002, + SND_FF_UNIT_VERSION_UFX = 0x000003, + SND_FF_UNIT_VERSION_UCX = 0x000004, + SND_FF_UNIT_VERSION_802 = 0x000005, +}; + +enum snd_ff_stream_mode { + SND_FF_STREAM_MODE_LOW = 0, + SND_FF_STREAM_MODE_MID, + SND_FF_STREAM_MODE_HIGH, + SND_FF_STREAM_MODE_COUNT, +}; + +struct snd_ff_protocol; +struct snd_ff_spec { + const unsigned int pcm_capture_channels[SND_FF_STREAM_MODE_COUNT]; + const unsigned int pcm_playback_channels[SND_FF_STREAM_MODE_COUNT]; + + unsigned int midi_in_ports; + unsigned int midi_out_ports; + + const struct snd_ff_protocol *protocol; + u64 midi_high_addr; + u8 midi_addr_range; + u64 midi_rx_addrs[SND_FF_OUT_MIDI_PORTS]; +}; + +struct snd_ff { + struct snd_card *card; + struct fw_unit *unit; + struct mutex mutex; + spinlock_t lock; + + bool registered; + struct delayed_work dwork; + + enum snd_ff_unit_version unit_version; + const struct snd_ff_spec *spec; + + /* To handle MIDI tx. */ + struct snd_rawmidi_substream *tx_midi_substreams[SND_FF_IN_MIDI_PORTS]; + struct fw_address_handler async_handler; + + /* TO handle MIDI rx. */ + struct snd_rawmidi_substream *rx_midi_substreams[SND_FF_OUT_MIDI_PORTS]; + bool on_sysex[SND_FF_OUT_MIDI_PORTS]; + __le32 msg_buf[SND_FF_OUT_MIDI_PORTS][SND_FF_MAXIMIM_MIDI_QUADS]; + struct work_struct rx_midi_work[SND_FF_OUT_MIDI_PORTS]; + struct fw_transaction transactions[SND_FF_OUT_MIDI_PORTS]; + ktime_t next_ktime[SND_FF_OUT_MIDI_PORTS]; + bool rx_midi_error[SND_FF_OUT_MIDI_PORTS]; + unsigned int rx_bytes[SND_FF_OUT_MIDI_PORTS]; + + unsigned int substreams_counter; + struct amdtp_stream tx_stream; + struct amdtp_stream rx_stream; + struct fw_iso_resources tx_resources; + struct fw_iso_resources rx_resources; + + int dev_lock_count; + bool dev_lock_changed; + wait_queue_head_t hwdep_wait; + + struct amdtp_domain domain; +}; + +enum snd_ff_clock_src { + SND_FF_CLOCK_SRC_INTERNAL, + SND_FF_CLOCK_SRC_SPDIF, + SND_FF_CLOCK_SRC_ADAT1, + SND_FF_CLOCK_SRC_ADAT2, + SND_FF_CLOCK_SRC_WORD, + SND_FF_CLOCK_SRC_LTC, + /* TODO: perhaps TCO exists. */ +}; + +struct snd_ff_protocol { + void (*handle_midi_msg)(struct snd_ff *ff, unsigned int offset, + __le32 *buf, size_t length); + int (*fill_midi_msg)(struct snd_ff *ff, + struct snd_rawmidi_substream *substream, + unsigned int port); + int (*get_clock)(struct snd_ff *ff, unsigned int *rate, + enum snd_ff_clock_src *src); + int (*switch_fetching_mode)(struct snd_ff *ff, bool enable); + int (*allocate_resources)(struct snd_ff *ff, unsigned int rate); + int (*begin_session)(struct snd_ff *ff, unsigned int rate); + void (*finish_session)(struct snd_ff *ff); + void (*dump_status)(struct snd_ff *ff, struct snd_info_buffer *buffer); +}; + +extern const struct snd_ff_protocol snd_ff_protocol_ff800; +extern const struct snd_ff_protocol snd_ff_protocol_ff400; +extern const struct snd_ff_protocol snd_ff_protocol_latter; + +int snd_ff_transaction_register(struct snd_ff *ff); +int snd_ff_transaction_reregister(struct snd_ff *ff); +void snd_ff_transaction_unregister(struct snd_ff *ff); + +int amdtp_ff_set_parameters(struct amdtp_stream *s, unsigned int rate, + unsigned int pcm_channels); +int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s, + struct snd_pcm_runtime *runtime); +int amdtp_ff_init(struct amdtp_stream *s, struct fw_unit *unit, + enum amdtp_stream_direction dir); + +int snd_ff_stream_get_multiplier_mode(enum cip_sfc sfc, + enum snd_ff_stream_mode *mode); +int snd_ff_stream_init_duplex(struct snd_ff *ff); +void snd_ff_stream_destroy_duplex(struct snd_ff *ff); +int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate, + unsigned int frames_per_period, + unsigned int frames_per_buffer); +int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate); +void snd_ff_stream_stop_duplex(struct snd_ff *ff); +void snd_ff_stream_update_duplex(struct snd_ff *ff); + +void snd_ff_stream_lock_changed(struct snd_ff *ff); +int snd_ff_stream_lock_try(struct snd_ff *ff); +void snd_ff_stream_lock_release(struct snd_ff *ff); + +void snd_ff_proc_init(struct snd_ff *ff); +const char *snd_ff_proc_get_clk_label(enum snd_ff_clock_src src); + +int snd_ff_create_midi_devices(struct snd_ff *ff); + +int snd_ff_create_pcm_devices(struct snd_ff *ff); + +int snd_ff_create_hwdep_devices(struct snd_ff *ff); + +#endif |