a42d64d51c
Refactor out some member resulting in code reduction. For SQUASH. Signed-off-by: Liam Girdwood <lrg@ti.com>
125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/*
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* linux/sound/soc-dsp.h -- ALSA SoC DSP
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*
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* Author: Liam Girdwood <lrg@slimlogic.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __LINUX_SND_SOC_DSP_H
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#define __LINUX_SND_SOC_DSP_H
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#include <sound/pcm.h>
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struct snd_soc_dapm_widget;
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/*
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* DSP trigger ordering. Triggering flexibility is required as some DSPs
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* require triggering before/after their clients/hosts.
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*
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* i.e. some clients may want to manually order this call in their PCM
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* trigger() whilst others will just use the regular core ordering.
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*/
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enum snd_soc_dsp_trigger {
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SND_SOC_DSP_TRIGGER_PRE = 0,
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SND_SOC_DSP_TRIGGER_POST,
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SND_SOC_DSP_TRIGGER_BESPOKE,
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};
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/*
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* The DSP Backend state.
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*/
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enum snd_soc_dsp_link_state {
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SND_SOC_DSP_LINK_STATE_NEW = 0, /* newly created path */
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SND_SOC_DSP_LINK_STATE_FREE, /* path to be dismantled */
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SND_SOC_DSP_LINK_STATE_HW_PARAMS, /* path hw_params configured */
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SND_SOC_DSP_LINK_STATE_PREPARE, /* path is prepared */
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SND_SOC_DSP_LINK_STATE_START, /* path is started */
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SND_SOC_DSP_LINK_STATE_PAUSED, /* path is paused */
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};
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struct snd_soc_dsp_params {
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struct snd_soc_pcm_runtime *be;
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struct snd_soc_pcm_runtime *fe;
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enum snd_soc_dsp_link_state state;
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struct list_head list_be;
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struct list_head list_fe;
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struct snd_pcm_hw_params params;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs_state;
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#endif
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};
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struct snd_soc_dsp_link {
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bool capture;
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bool playback;
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enum snd_soc_dsp_trigger trigger[2];
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};
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/* FE DSP PCM ops - called by soc-core */
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int soc_dsp_fe_dai_open(struct snd_pcm_substream *substream);
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int soc_dsp_fe_dai_close(struct snd_pcm_substream *substream);
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int soc_dsp_fe_dai_prepare(struct snd_pcm_substream *substream);
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int soc_dsp_fe_dai_hw_free(struct snd_pcm_substream *substream);
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int soc_dsp_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd);
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int soc_dsp_fe_dai_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params);
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/* Backend DSP trigger.
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* Can be called by core or components depending on trigger config.
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*/
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int soc_dsp_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd);
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/* Is this trigger() call required for this BE and stream */
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static inline int snd_soc_dsp_is_trigger_for_be(struct snd_soc_pcm_runtime *fe,
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struct snd_soc_pcm_runtime *be, int stream)
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{
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if (!fe->dsp[stream].runtime_update)
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return 1;
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else if (be->dsp[stream].runtime_update)
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return 1;
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else
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return 0;
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}
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/* Is this trigger() call required for this FE and stream */
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static inline int snd_soc_dsp_is_trigger_for_fe(struct snd_soc_pcm_runtime *fe,
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int stream)
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{
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return !fe->dsp[stream].runtime_update;
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}
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static inline int snd_soc_dsp_platform_trigger(struct snd_pcm_substream *substream,
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int cmd, struct snd_soc_platform *platform)
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{
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if (platform->driver->ops->trigger)
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return platform->driver->ops->trigger(substream, cmd);
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return 0;
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}
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/* Runtime update - open/close Backend DSP paths depending on mixer updates */
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int soc_dsp_runtime_update(struct snd_soc_dapm_widget *widget);
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/* Backend DSP suspend and resume */
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int soc_dsp_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute);
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int soc_dsp_be_cpu_dai_suspend(struct snd_soc_pcm_runtime *fe);
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int soc_dsp_be_ac97_cpu_dai_suspend(struct snd_soc_pcm_runtime *fe);
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int soc_dsp_be_platform_suspend(struct snd_soc_pcm_runtime *fe);
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int soc_dsp_be_cpu_dai_resume(struct snd_soc_pcm_runtime *fe);
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int soc_dsp_be_ac97_cpu_dai_resume(struct snd_soc_pcm_runtime *fe);
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int soc_dsp_be_platform_resume(struct snd_soc_pcm_runtime *fe);
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/* DAPM stream events for Backend DSP paths */
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int soc_dsp_dapm_stream_event(struct snd_soc_pcm_runtime *fe,
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int dir, const char *stream, int event);
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static inline struct snd_pcm_substream *snd_soc_dsp_get_substream(
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struct snd_soc_pcm_runtime *be, int stream)
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{
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return be->pcm->streams[stream].substream;
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}
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#endif
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