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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * OSS compatible sequencer driver4 * read fifo queue5 *6 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>7 */8 9#ifndef __SEQ_OSS_READQ_H10#define __SEQ_OSS_READQ_H11 12#include "seq_oss_device.h"13 14 15/*16 * definition of read queue17 */18struct seq_oss_readq {19 union evrec *q;20 int qlen;21 int maxlen;22 int head, tail;23 unsigned long pre_event_timeout;24 unsigned long input_time;25 wait_queue_head_t midi_sleep;26 spinlock_t lock;27};28 29struct seq_oss_readq *snd_seq_oss_readq_new(struct seq_oss_devinfo *dp, int maxlen);30void snd_seq_oss_readq_delete(struct seq_oss_readq *q);31void snd_seq_oss_readq_clear(struct seq_oss_readq *readq);32unsigned int snd_seq_oss_readq_poll(struct seq_oss_readq *readq, struct file *file, poll_table *wait);33int snd_seq_oss_readq_puts(struct seq_oss_readq *readq, int dev, unsigned char *data, int len);34int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev,35 struct snd_seq_event *ev);36int snd_seq_oss_readq_put_event(struct seq_oss_readq *readq, union evrec *ev);37int snd_seq_oss_readq_put_timestamp(struct seq_oss_readq *readq, unsigned long curt, int seq_mode);38int snd_seq_oss_readq_pick(struct seq_oss_readq *q, union evrec *rec);39void snd_seq_oss_readq_wait(struct seq_oss_readq *q);40void snd_seq_oss_readq_free(struct seq_oss_readq *q);41 42#define snd_seq_oss_readq_lock(q, flags) spin_lock_irqsave(&(q)->lock, flags)43#define snd_seq_oss_readq_unlock(q, flags) spin_unlock_irqrestore(&(q)->lock, flags)44 45#endif46