/* * linux/sound/soc-dpcm.h -- ALSA SoC Dynamic PCM Support * * Author: Liam Girdwood * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #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, SND_SOC_DPCM_TRIGGER_BESPOKE, }; /* * 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; /* hw params for this link - may be different for each link */ struct snd_pcm_hw_params hw_params; #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_runtime *runtime; 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 */ }; /* can this BE stop and free */ int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream); /* can this BE perform a hw_params() */ int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream); /* is the current PCM operation for this FE ? */ int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream); /* is the current PCM operation for this BE ? */ int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream); /* get the substream for this BE */ struct snd_pcm_substream * snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream); /* get the BE runtime state */ enum snd_soc_dpcm_state snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream); /* set the BE runtime state */ void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, int stream, enum snd_soc_dpcm_state state); /* internal use only */ int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute); void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd); int soc_dpcm_runtime_update(struct snd_soc_card *); int dpcm_path_get(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list_); int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list, int new); int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream); int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream); void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream); void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream); int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream); int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int tream); int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd); int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream); int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, int event); static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) { kfree(*list); } #endif m>
authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 16:09:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 16:09:50 -0800
commit99421c1cb27fb837e93b517036fab4500fe39de5 (patch)
treede5fc5bacb671223f389793ad643cebe520bc292 /net/hsr/Kconfig
parentc92816275674c1491ce228ee49aa030a5fa1be04 (diff)
parent93362fa47fe98b62e4a34ab408c4a418432e7939 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace fixes from Eric Biederman: "This tree contains 4 fixes. The first is a fix for a race that can causes oopses under the right circumstances, and that someone just recently encountered. Past that are several small trivial correct fixes. A real issue that was blocking development of an out of tree driver, but does not appear to have caused any actual problems for in-tree code. A potential deadlock that was reported by lockdep. And a deadlock people have experienced and took the time to track down caused by a cleanup that removed the code to drop a reference count" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: sysctl: Drop reference added by grab_header in proc_sys_readdir pid: fix lockdep deadlock warning due to ucount_lock libfs: Modify mount_pseudo_xattr to be clear it is not a userspace mount mnt: Protect the mountpoint hashtable with mount_lock
Diffstat (limited to 'net/hsr/Kconfig')