| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* |
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| 3 | * ALSA sequencer System Client |
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| 4 | * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl> |
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| 5 | */ |
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| 6 | #ifndef __SND_SEQ_SYSTEM_H |
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| 7 | #define __SND_SEQ_SYSTEM_H |
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| 8 | |
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| 9 | #include <sound/seq_kernel.h> |
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| 10 | |
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| 11 | |
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| 12 | /* entry points for broadcasting system events */ |
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| 13 | void snd_seq_system_broadcast(int client, int port, int type, bool atomic); |
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| 14 | |
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| 15 | /* normal system notification event broadcast */ |
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| 16 | #define notify_event(client, port, type) \ |
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| 17 | snd_seq_system_broadcast(client, port, type, false) |
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| 18 | |
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| 19 | /* notify UMP EP/FB change event */ |
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| 20 | static inline void snd_seq_system_ump_notify(int client, int block, int type, |
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| 21 | bool atomic) |
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| 22 | { |
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| 23 | /* reuse the existing snd_seq_system_broadcast(): |
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| 24 | * struct snd_seq_ev_ump_notify is compatible with struct snd_seq_addr |
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| 25 | */ |
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| 26 | snd_seq_system_broadcast(client, port: block, type, atomic); |
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| 27 | } |
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| 28 | |
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| 29 | #define snd_seq_system_client_ev_client_start(client) notify_event(client, 0, SNDRV_SEQ_EVENT_CLIENT_START) |
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| 30 | #define snd_seq_system_client_ev_client_exit(client) notify_event(client, 0, SNDRV_SEQ_EVENT_CLIENT_EXIT) |
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| 31 | #define snd_seq_system_client_ev_client_change(client) notify_event(client, 0, SNDRV_SEQ_EVENT_CLIENT_CHANGE) |
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| 32 | #define snd_seq_system_client_ev_port_start(client, port) notify_event(client, port, SNDRV_SEQ_EVENT_PORT_START) |
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| 33 | #define snd_seq_system_client_ev_port_exit(client, port) notify_event(client, port, SNDRV_SEQ_EVENT_PORT_EXIT) |
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| 34 | #define snd_seq_system_client_ev_port_change(client, port) notify_event(client, port, SNDRV_SEQ_EVENT_PORT_CHANGE) |
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| 35 | |
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| 36 | int snd_seq_system_notify(int client, int port, struct snd_seq_event *ev, |
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| 37 | bool atomic); |
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| 38 | |
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| 39 | /* register our internal client */ |
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| 40 | int snd_seq_system_client_init(void); |
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| 41 | |
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| 42 | /* unregister our internal client */ |
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| 43 | void snd_seq_system_client_done(void); |
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| 44 | |
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| 45 | |
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| 46 | #endif |
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| 47 | |
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