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📁 ac97
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📁 sof
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📄 ac97_codec.h
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📄 dmaengine_pcm.h
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📄 opl4.h
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📄 pcm.h
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📄 pcm_drm_eld.h
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📄 pcm_iec958.h
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📄 pcm_params.h
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📄 rawmidi.h
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📄 s3c24xx_uda134x.h
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📄 sdw.h
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📄 seq_device.h
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📄 seq_kernel.h
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📄 seq_midi_emul.h
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📄 seq_midi_event.h
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📄 seq_oss.h
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📄 seq_oss_legacy.h
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📄 seq_virmidi.h
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📄 sh_dac_audio.h
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📄 simple_card.h
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📄 simple_card_utils.h
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📄 snd_wavefront.h
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📄 soc-acpi-intel-match.h
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📄 soc.h
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📄 sof.h
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📄 soundfont.h
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📄 spear_dma.h
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📄 spear_spdif.h
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📄 wss.h
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EDIT: rawmidi.h
/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_RAWMIDI_H #define __SOUND_RAWMIDI_H /* * Abstract layer for MIDI v1.0 stream * Copyright (c) by Jaroslav Kysela <perex@perex.cz> */ #include <sound/asound.h> #include <linux/interrupt.h> #include <linux/spinlock.h> #include <linux/wait.h> #include <linux/mutex.h> #include <linux/workqueue.h> #include <linux/device.h> #if IS_ENABLED(CONFIG_SND_SEQUENCER) #include <sound/seq_device.h> #endif /* * Raw MIDI interface */ #define SNDRV_RAWMIDI_DEVICES 8 #define SNDRV_RAWMIDI_LFLG_OUTPUT (1<<0) #define SNDRV_RAWMIDI_LFLG_INPUT (1<<1) #define SNDRV_RAWMIDI_LFLG_OPEN (3<<0) #define SNDRV_RAWMIDI_LFLG_APPEND (1<<2) struct snd_rawmidi; struct snd_rawmidi_substream; struct snd_seq_port_info; struct pid; struct snd_rawmidi_ops { int (*open) (struct snd_rawmidi_substream * substream); int (*close) (struct snd_rawmidi_substream * substream); void (*trigger) (struct snd_rawmidi_substream * substream, int up); void (*drain) (struct snd_rawmidi_substream * substream); }; struct snd_rawmidi_global_ops { int (*dev_register) (struct snd_rawmidi * rmidi); int (*dev_unregister) (struct snd_rawmidi * rmidi); void (*get_port_info)(struct snd_rawmidi *rmidi, int number, struct snd_seq_port_info *info); }; struct snd_rawmidi_runtime { struct snd_rawmidi_substream *substream; unsigned int drain: 1, /* drain stage */ oss: 1; /* OSS compatible mode */ /* midi stream buffer */ unsigned char *buffer; /* buffer for MIDI data */ size_t buffer_size; /* size of buffer */ size_t appl_ptr; /* application pointer */ size_t hw_ptr; /* hardware pointer */ size_t avail_min; /* min avail for wakeup */ size_t avail; /* max used buffer for wakeup */ size_t xruns; /* over/underruns counter */ int buffer_ref; /* buffer reference count */ /* misc */ wait_queue_head_t sleep; /* event handler (new bytes, input only) */ void (*event)(struct snd_rawmidi_substream *substream); /* defers calls to event [input] or ops->trigger [output] */ struct work_struct event_work; /* private data */ void *private_data; void (*private_free)(struct snd_rawmidi_substream *substream); }; struct snd_rawmidi_substream { struct list_head list; /* list of all substream for given stream */ int stream; /* direction */ int number; /* substream number */ bool opened; /* open flag */ bool append; /* append flag (merge more streams) */ bool active_sensing; /* send active sensing when close */ unsigned int framing; /* whether to frame input data */ unsigned int clock_type; /* clock source to use for input framing */ int use_count; /* use counter (for output) */ size_t bytes; spinlock_t lock; struct snd_rawmidi *rmidi; struct snd_rawmidi_str *pstr; char name[32]; struct snd_rawmidi_runtime *runtime; struct pid *pid; /* hardware layer */ const struct snd_rawmidi_ops *ops; }; struct snd_rawmidi_file { struct snd_rawmidi *rmidi; struct snd_rawmidi_substream *input; struct snd_rawmidi_substream *output; unsigned int user_pversion; /* supported protocol version */ }; struct snd_rawmidi_str { unsigned int substream_count; unsigned int substream_opened; struct list_head substreams; }; struct snd_rawmidi { struct snd_card *card; struct list_head list; unsigned int device; /* device number */ unsigned int info_flags; /* SNDRV_RAWMIDI_INFO_XXXX */ char id[64]; char name[80]; #ifdef CONFIG_SND_OSSEMUL int ossreg; #endif const struct snd_rawmidi_global_ops *ops; struct snd_rawmidi_str streams[2]; void *private_data; void (*private_free) (struct snd_rawmidi *rmidi); struct mutex open_mutex; wait_queue_head_t open_wait; struct device *dev; struct snd_info_entry *proc_entry; #if IS_ENABLED(CONFIG_SND_SEQUENCER) struct snd_seq_device *seq_dev; #endif }; /* main rawmidi functions */ int snd_rawmidi_new(struct snd_card *card, char *id, int device, int output_count, int input_count, struct snd_rawmidi **rmidi); void snd_rawmidi_set_ops(struct snd_rawmidi *rmidi, int stream, const struct snd_rawmidi_ops *ops); /* callbacks */ int snd_rawmidi_receive(struct snd_rawmidi_substream *substream, const unsigned char *buffer, int count); int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream); int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream, unsigned char *buffer, int count); int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count); int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream, unsigned char *buffer, int count); int snd_rawmidi_proceed(struct snd_rawmidi_substream *substream); /* main midi functions */ int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info); int snd_rawmidi_kernel_open(struct snd_rawmidi *rmidi, int subdevice, int mode, struct snd_rawmidi_file *rfile); int snd_rawmidi_kernel_release(struct snd_rawmidi_file *rfile); int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream, struct snd_rawmidi_params *params); int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream, struct snd_rawmidi_params *params); int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream); int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream); int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream); long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream, unsigned char *buf, long count); long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream, const unsigned char *buf, long count); #endif /* __SOUND_RAWMIDI_H */