linux/sound/soc/sof/sof-audio.c

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2019 Intel Corporation
//
// Author: Ranjani Sridharan <[email protected]>
//

#include <linux/bitfield.h>
#include <trace/events/sof.h>
#include "sof-audio.h"
#include "ops.h"

static bool is_virtual_widget(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget,
			      const char *func)
{ … }

static void sof_reset_route_setup_status(struct snd_sof_dev *sdev, struct snd_sof_widget *widget)
{ … }

static int sof_widget_free_unlocked(struct snd_sof_dev *sdev,
				    struct snd_sof_widget *swidget)
{ … }

int sof_widget_free(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{ … }
EXPORT_SYMBOL(…);

static int sof_widget_setup_unlocked(struct snd_sof_dev *sdev,
				     struct snd_sof_widget *swidget)
{ … }

int sof_widget_setup(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{ … }
EXPORT_SYMBOL(…);

int sof_route_setup(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *wsource,
		    struct snd_soc_dapm_widget *wsink)
{ … }

static int sof_setup_pipeline_connections(struct snd_sof_dev *sdev,
					  struct snd_soc_dapm_widget_list *list, int dir)
{ … }

static void
sof_unprepare_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget,
			      struct snd_soc_dapm_widget_list *list)
{ … }

static int
sof_prepare_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget,
			    struct snd_pcm_hw_params *fe_params,
			    struct snd_sof_platform_stream_params *platform_params,
			    struct snd_pcm_hw_params *pipeline_params, int dir,
			    struct snd_soc_dapm_widget_list *list)
{ … }

/*
 * free all widgets in the sink path starting from the source widget
 * (DAI type for capture, AIF type for playback)
 */
static int sof_free_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget,
				    int dir, struct snd_sof_pcm *spcm)
{ … }

/*
 * set up all widgets in the sink path starting from the source widget
 * (DAI type for capture, AIF type for playback).
 * The error path in this function ensures that all successfully set up widgets getting freed.
 */
static int sof_set_up_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget,
				      int dir, struct snd_sof_pcm *spcm)
{ … }

static int
sof_walk_widgets_in_order(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm,
			  struct snd_pcm_hw_params *fe_params,
			  struct snd_sof_platform_stream_params *platform_params, int dir,
			  enum sof_widget_op op)
{ … }

int sof_widget_list_setup(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm,
			  struct snd_pcm_hw_params *fe_params,
			  struct snd_sof_platform_stream_params *platform_params,
			  int dir)
{ … }

int sof_widget_list_free(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm, int dir)
{ … }

/*
 * helper to determine if there are only D0i3 compatible
 * streams active
 */
bool snd_sof_dsp_only_d0i3_compatible_stream_active(struct snd_sof_dev *sdev)
{ … }
EXPORT_SYMBOL(…);

bool snd_sof_stream_suspend_ignored(struct snd_sof_dev *sdev)
{ … }

int sof_pcm_stream_free(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,
			struct snd_sof_pcm *spcm, int dir, bool free_widget_list)
{ … }

/*
 * Generic object lookup APIs.
 */

struct snd_sof_pcm *snd_sof_find_spcm_name(struct snd_soc_component *scomp,
					   const char *name)
{ … }

struct snd_sof_pcm *snd_sof_find_spcm_comp(struct snd_soc_component *scomp,
					   unsigned int comp_id,
					   int *direction)
{ … }

struct snd_sof_widget *snd_sof_find_swidget(struct snd_soc_component *scomp,
					    const char *name)
{ … }

/* find widget by stream name and direction */
struct snd_sof_widget *
snd_sof_find_swidget_sname(struct snd_soc_component *scomp,
			   const char *pcm_name, int dir)
{ … }

struct snd_sof_dai *snd_sof_find_dai(struct snd_soc_component *scomp,
				     const char *name)
{ … }

static int sof_dai_get_param(struct snd_soc_pcm_runtime *rtd, int param_type)
{ … }

/*
 * Helper to get SSP MCLK from a pcm_runtime.
 * Return 0 if not exist.
 */
int sof_dai_get_mclk(struct snd_soc_pcm_runtime *rtd)
{ … }
EXPORT_SYMBOL(…);

/*
 * Helper to get SSP BCLK from a pcm_runtime.
 * Return 0 if not exist.
 */
int sof_dai_get_bclk(struct snd_soc_pcm_runtime *rtd)
{ … }
EXPORT_SYMBOL(…);

/*
 * Helper to get SSP TDM slot number from a pcm_runtime.
 * Return 0 if not exist.
 */
int sof_dai_get_tdm_slots(struct snd_soc_pcm_runtime *rtd)
{ … }
EXPORT_SYMBOL(…);