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Index of /FSS-OZR/root/usr/lib/modules/5.14.0-687.31.1.el9_8.x86_64/source/sound/firewire/digi00x
Index of /FSS-OZR/root/usr/lib/modules/5.14.0-687.31.1.el9_8.x86_64/source/sound/firewire/digi00x
0 * l4(
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i=_I|+ @ /* SPDX-License-Identifier: GPL-2.0
*
* linux/sound/soc-dpcm.h -- ALSA SoC Dynamic PCM Support
*
* Author: Liam Girdwood
*/
#ifndef __LINUX_SND_SOC_DPCM_H
#define __LINUX_SND_SOC_DPCM_H
#include
#include
#include
struct snd_soc_pcm_runtime;
/*
* Types of runtime_update to perform. e.g. originated from FE PCM ops
* or audio route changes triggered by muxes/mixers.
*/
enum snd_soc_dpcm_update {
SND_SOC_DPCM_UPDATE_NO = 0,
SND_SOC_DPCM_UPDATE_BE,
SND_SOC_DPCM_UPDATE_FE,
};
/*
* Dynamic PCM Frontend -> Backend link management states.
*/
enum snd_soc_dpcm_link_state {
SND_SOC_DPCM_LINK_STATE_NEW = 0, /* newly created link */
SND_SOC_DPCM_LINK_STATE_FREE, /* link to be dismantled */
};
/*
* Dynamic PCM Frontend -> Backend link PCM states.
*/
enum snd_soc_dpcm_state {
SND_SOC_DPCM_STATE_NEW = 0,
SND_SOC_DPCM_STATE_OPEN,
SND_SOC_DPCM_STATE_HW_PARAMS,
SND_SOC_DPCM_STATE_PREPARE,
SND_SOC_DPCM_STATE_START,
SND_SOC_DPCM_STATE_STOP,
SND_SOC_DPCM_STATE_PAUSED,
SND_SOC_DPCM_STATE_SUSPEND,
SND_SOC_DPCM_STATE_HW_FREE,
SND_SOC_DPCM_STATE_CLOSE,
};
/*
* Dynamic PCM trigger ordering. Triggering flexibility is required as some
* DSPs require triggering before/after their CPU platform and DAIs.
*
* i.e. some clients may want to manually order this call in their PCM
* trigger() whilst others will just use the regular core ordering.
*/
enum snd_soc_dpcm_trigger {
SND_SOC_DPCM_TRIGGER_PRE = 0,
SND_SOC_DPCM_TRIGGER_POST,
};
/*
* Dynamic PCM link
* This links together a FE and BE DAI at runtime and stores the link
* state information and the hw_params configuration.
*/
struct snd_soc_dpcm {
/* FE and BE DAIs*/
struct snd_soc_pcm_runtime *be;
struct snd_soc_pcm_runtime *fe;
/* link state */
enum snd_soc_dpcm_link_state state;
/* list of BE and FE for this DPCM link */
struct list_head list_be;
struct list_head list_fe;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_state;
#endif
};
/*
* Dynamic PCM runtime data.
*/
struct snd_soc_dpcm_runtime {
struct list_head be_clients;
struct list_head fe_clients;
int users;
struct snd_pcm_hw_params hw_params;
/* state and update */
enum snd_soc_dpcm_update runtime_update;
enum snd_soc_dpcm_state state;
int trigger_pending; /* trigger cmd + 1 if pending, 0 if not */
int be_start; /* refcount protected by BE stream pcm lock */
int be_pause; /* refcount protected by BE stream pcm lock */
bool fe_pause; /* used to track STOP after PAUSE */
};
#define for_each_dpcm_fe(be, stream, _dpcm) \
list_for_each_entry(_dpcm, &(be)->dpcm[stream].fe_clients, list_fe)
#define for_each_dpcm_be(fe, stream, _dpcm) \
list_for_each_entry(_dpcm, &(fe)->dpcm[stream].be_clients, list_be)
#define for_each_dpcm_be_safe(fe, stream, _dpc