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8#ifndef SOUND_FIREFACE_H_INCLUDED
9#define SOUND_FIREFACE_H_INCLUDED
10
11#include <linux/device.h>
12#include <linux/firewire.h>
13#include <linux/firewire-constants.h>
14#include <linux/module.h>
15#include <linux/mod_devicetable.h>
16#include <linux/mutex.h>
17#include <linux/slab.h>
18#include <linux/compat.h>
19#include <linux/sched/signal.h>
20
21#include <sound/core.h>
22#include <sound/info.h>
23#include <sound/rawmidi.h>
24#include <sound/pcm.h>
25#include <sound/pcm_params.h>
26#include <sound/hwdep.h>
27#include <sound/firewire.h>
28
29#include "../lib.h"
30#include "../amdtp-stream.h"
31#include "../iso-resources.h"
32
33#define SND_FF_MAXIMIM_MIDI_QUADS 9
34#define SND_FF_IN_MIDI_PORTS 2
35#define SND_FF_OUT_MIDI_PORTS 2
36
37enum snd_ff_stream_mode {
38 SND_FF_STREAM_MODE_LOW = 0,
39 SND_FF_STREAM_MODE_MID,
40 SND_FF_STREAM_MODE_HIGH,
41 SND_FF_STREAM_MODE_COUNT,
42};
43
44struct snd_ff_protocol;
45struct snd_ff_spec {
46 const char *const name;
47
48 const unsigned int pcm_capture_channels[SND_FF_STREAM_MODE_COUNT];
49 const unsigned int pcm_playback_channels[SND_FF_STREAM_MODE_COUNT];
50
51 unsigned int midi_in_ports;
52 unsigned int midi_out_ports;
53
54 const struct snd_ff_protocol *protocol;
55 u64 midi_high_addr;
56 u8 midi_addr_range;
57 u64 midi_rx_addrs[SND_FF_OUT_MIDI_PORTS];
58};
59
60struct snd_ff {
61 struct snd_card *card;
62 struct fw_unit *unit;
63 struct mutex mutex;
64 spinlock_t lock;
65
66 bool registered;
67 struct delayed_work dwork;
68
69 const struct snd_ff_spec *spec;
70
71
72 struct snd_rawmidi_substream *tx_midi_substreams[SND_FF_IN_MIDI_PORTS];
73 struct fw_address_handler async_handler;
74
75
76 struct snd_rawmidi_substream *rx_midi_substreams[SND_FF_OUT_MIDI_PORTS];
77 bool on_sysex[SND_FF_OUT_MIDI_PORTS];
78 __le32 msg_buf[SND_FF_OUT_MIDI_PORTS][SND_FF_MAXIMIM_MIDI_QUADS];
79 struct work_struct rx_midi_work[SND_FF_OUT_MIDI_PORTS];
80 struct fw_transaction transactions[SND_FF_OUT_MIDI_PORTS];
81 ktime_t next_ktime[SND_FF_OUT_MIDI_PORTS];
82 bool rx_midi_error[SND_FF_OUT_MIDI_PORTS];
83 unsigned int rx_bytes[SND_FF_OUT_MIDI_PORTS];
84
85 unsigned int substreams_counter;
86 struct amdtp_stream tx_stream;
87 struct amdtp_stream rx_stream;
88 struct fw_iso_resources tx_resources;
89 struct fw_iso_resources rx_resources;
90
91 int dev_lock_count;
92 bool dev_lock_changed;
93 wait_queue_head_t hwdep_wait;
94};
95
96enum snd_ff_clock_src {
97 SND_FF_CLOCK_SRC_INTERNAL,
98 SND_FF_CLOCK_SRC_SPDIF,
99 SND_FF_CLOCK_SRC_ADAT1,
100 SND_FF_CLOCK_SRC_ADAT2,
101 SND_FF_CLOCK_SRC_WORD,
102 SND_FF_CLOCK_SRC_LTC,
103
104};
105
106struct snd_ff_protocol {
107 void (*handle_midi_msg)(struct snd_ff *ff, unsigned int offset,
108 __le32 *buf, size_t length);
109 int (*fill_midi_msg)(struct snd_ff *ff,
110 struct snd_rawmidi_substream *substream,
111 unsigned int port);
112 int (*get_clock)(struct snd_ff *ff, unsigned int *rate,
113 enum snd_ff_clock_src *src);
114 int (*switch_fetching_mode)(struct snd_ff *ff, bool enable);
115 int (*allocate_resources)(struct snd_ff *ff, unsigned int rate);
116 int (*begin_session)(struct snd_ff *ff, unsigned int rate);
117 void (*finish_session)(struct snd_ff *ff);
118 void (*dump_status)(struct snd_ff *ff, struct snd_info_buffer *buffer);
119};
120
121extern const struct snd_ff_protocol snd_ff_protocol_ff800;
122extern const struct snd_ff_protocol snd_ff_protocol_ff400;
123extern const struct snd_ff_protocol snd_ff_protocol_latter;
124
125int snd_ff_transaction_register(struct snd_ff *ff);
126int snd_ff_transaction_reregister(struct snd_ff *ff);
127void snd_ff_transaction_unregister(struct snd_ff *ff);
128
129int amdtp_ff_set_parameters(struct amdtp_stream *s, unsigned int rate,
130 unsigned int pcm_channels);
131int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s,
132 struct snd_pcm_runtime *runtime);
133int amdtp_ff_init(struct amdtp_stream *s, struct fw_unit *unit,
134 enum amdtp_stream_direction dir);
135
136int snd_ff_stream_get_multiplier_mode(enum cip_sfc sfc,
137 enum snd_ff_stream_mode *mode);
138int snd_ff_stream_init_duplex(struct snd_ff *ff);
139void snd_ff_stream_destroy_duplex(struct snd_ff *ff);
140int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate);
141int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate);
142void snd_ff_stream_stop_duplex(struct snd_ff *ff);
143void snd_ff_stream_update_duplex(struct snd_ff *ff);
144
145void snd_ff_stream_lock_changed(struct snd_ff *ff);
146int snd_ff_stream_lock_try(struct snd_ff *ff);
147void snd_ff_stream_lock_release(struct snd_ff *ff);
148
149void snd_ff_proc_init(struct snd_ff *ff);
150const char *snd_ff_proc_get_clk_label(enum snd_ff_clock_src src);
151
152int snd_ff_create_midi_devices(struct snd_ff *ff);
153
154int snd_ff_create_pcm_devices(struct snd_ff *ff);
155
156int snd_ff_create_hwdep_devices(struct snd_ff *ff);
157
158#endif
159
