/* * 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 rl'>
authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /include/uapi/asm-generic/termios.h
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/uapi/asm-generic/termios.h')