blob: 62092e2d609c728dbe16d641c63a220e9316b33c [file] [log] [blame]
// 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. All rights reserved.
//
// Author: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
//
#include <linux/bitfield.h>
#include <trace/events/sof.h>
#include "sof-audio.h"
#include "sof-of-dev.h"
#include "ops.h"
static void sof_reset_route_setup_status(struct snd_sof_dev *sdev, struct snd_sof_widget *widget)
{
const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
struct snd_sof_route *sroute;
list_for_each_entry(sroute, &sdev->route_list, list)
if (sroute->src_widget == widget || sroute->sink_widget == widget) {
if (sroute->setup && tplg_ops->route_free)
tplg_ops->route_free(sdev, sroute);
sroute->setup = false;
}
}
int sof_widget_free(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{
const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
int err = 0;
int ret;
if (!swidget->private)
return 0;
trace_sof_widget_free(swidget);
/* only free when use_count is 0 */
if (--swidget->use_count)
return 0;
/* reset route setup status for all routes that contain this widget */
sof_reset_route_setup_status(sdev, swidget);
/* continue to disable core even if IPC fails */
if (tplg_ops->widget_free)
err = tplg_ops->widget_free(sdev, swidget);
/*
* disable widget core. continue to route setup status and complete flag
* even if this fails and return the appropriate error
*/
ret = snd_sof_dsp_core_put(sdev, swidget->core);
if (ret < 0) {
dev_err(sdev->dev, "error: failed to disable target core: %d for widget %s\n",
swidget->core, swidget->widget->name);
if (!err)
err = ret;
}
/*
* free the scheduler widget (same as pipe_widget) associated with the current swidget.
* skip for static pipelines
*/
if (swidget->dynamic_pipeline_widget && swidget->id != snd_soc_dapm_scheduler) {
ret = sof_widget_free(sdev, swidget->pipe_widget);
if (ret < 0 && !err)
err = ret;
swidget->pipe_widget->complete = 0;
}
if (!err)
dev_dbg(sdev->dev, "widget %s freed\n", swidget->widget->name);
return err;
}
EXPORT_SYMBOL(sof_widget_free);
int sof_widget_setup(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{
const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
int ret;
/* skip if there is no private data */
if (!swidget->private)
return 0;
trace_sof_widget_setup(swidget);
/* widget already set up */
if (++swidget->use_count > 1)
return 0;
/*
* The scheduler widget for a pipeline is not part of the connected DAPM
* widget list and it needs to be set up before the widgets in the pipeline
* are set up. The use_count for the scheduler widget is incremented for every
* widget in a given pipeline to ensure that it is freed only after the last
* widget in the pipeline is freed. Skip setting up scheduler widget for static pipelines.
*/
if (swidget->dynamic_pipeline_widget && swidget->id != snd_soc_dapm_scheduler) {
if (!swidget->pipe_widget) {
dev_err(sdev->dev, "No scheduler widget set for %s\n",
swidget->widget->name);
ret = -EINVAL;
goto use_count_dec;
}
ret = sof_widget_setup(sdev, swidget->pipe_widget);
if (ret < 0)
goto use_count_dec;
}
/* enable widget core */
ret = snd_sof_dsp_core_get(sdev, swidget->core);
if (ret < 0) {
dev_err(sdev->dev, "error: failed to enable target core for widget %s\n",
swidget->widget->name);
goto pipe_widget_free;
}
/* setup widget in the DSP */
if (tplg_ops->widget_setup) {
ret = tplg_ops->widget_setup(sdev, swidget);
if (ret < 0)
goto core_put;
}
/* send config for DAI components */
if (WIDGET_IS_DAI(swidget->id)) {
unsigned int flags = SOF_DAI_CONFIG_FLAGS_NONE;
if (tplg_ops->dai_config) {
ret = tplg_ops->dai_config(sdev, swidget, flags, NULL);
if (ret < 0)
goto widget_free;
}
}
/* restore kcontrols for widget */
if (tplg_ops->control->widget_kcontrol_setup) {
ret = tplg_ops->control->widget_kcontrol_setup(sdev, swidget);
if (ret < 0)
goto widget_free;
}
dev_dbg(sdev->dev, "widget %s setup complete\n", swidget->widget->name);
return 0;
widget_free:
/* widget use_count and core ref_count will both be decremented by sof_widget_free() */
sof_widget_free(sdev, swidget);
core_put:
snd_sof_dsp_core_put(sdev, swidget->core);
pipe_widget_free:
if (swidget->id != snd_soc_dapm_scheduler)
sof_widget_free(sdev, swidget->pipe_widget);
use_count_dec:
swidget->use_count--;
return ret;
}
EXPORT_SYMBOL(sof_widget_setup);
int sof_route_setup(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *wsource,
struct snd_soc_dapm_widget *wsink)
{
const struct sof_ipc_tplg_ops *ipc_tplg_ops = sdev->ipc->ops->tplg;
struct snd_sof_widget *src_widget = wsource->dobj.private;
struct snd_sof_widget *sink_widget = wsink->dobj.private;
struct snd_sof_route *sroute;
bool route_found = false;
int ret;
/* ignore routes involving virtual widgets in topology */
switch (src_widget->id) {
case snd_soc_dapm_out_drv:
case snd_soc_dapm_output:
case snd_soc_dapm_input:
return 0;
default:
break;
}
switch (sink_widget->id) {
case snd_soc_dapm_out_drv:
case snd_soc_dapm_output:
case snd_soc_dapm_input:
return 0;
default:
break;
}
/* find route matching source and sink widgets */
list_for_each_entry(sroute, &sdev->route_list, list)
if (sroute->src_widget == src_widget && sroute->sink_widget == sink_widget) {
route_found = true;
break;
}
if (!route_found) {
dev_err(sdev->dev, "error: cannot find SOF route for source %s -> %s sink\n",
wsource->name, wsink->name);
return -EINVAL;
}
/* nothing to do if route is already set up */
if (sroute->setup)
return 0;
ret = ipc_tplg_ops->route_setup(sdev, sroute);
if (ret < 0)
return ret;
sroute->setup = true;
return 0;
}
static int sof_setup_pipeline_connections(struct snd_sof_dev *sdev,
struct snd_soc_dapm_widget_list *list, int dir)
{
struct snd_soc_dapm_widget *widget;
struct snd_soc_dapm_path *p;
int ret;
int i;
/*
* Set up connections between widgets in the sink/source paths based on direction.
* Some non-SOF widgets exist in topology either for compatibility or for the
* purpose of connecting a pipeline from a host to a DAI in order to receive the DAPM
* events. But they are not handled by the firmware. So ignore them.
*/
if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
for_each_dapm_widgets(list, i, widget) {
if (!widget->dobj.private)
continue;
snd_soc_dapm_widget_for_each_sink_path(widget, p)
if (p->sink->dobj.private) {
ret = sof_route_setup(sdev, widget, p->sink);
if (ret < 0)
return ret;
}
}
} else {
for_each_dapm_widgets(list, i, widget) {
if (!widget->dobj.private)
continue;
snd_soc_dapm_widget_for_each_source_path(widget, p)
if (p->source->dobj.private) {
ret = sof_route_setup(sdev, p->source, widget);
if (ret < 0)
return ret;
}
}
}
return 0;
}
static void
sof_unprepare_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget)
{
const struct sof_ipc_tplg_ops *ipc_tplg_ops = sdev->ipc->ops->tplg;
const struct sof_ipc_tplg_widget_ops *widget_ops = ipc_tplg_ops->widget;
struct snd_sof_widget *swidget = widget->dobj.private;
struct snd_soc_dapm_path *p;
/* return if the widget is in use or if it is already unprepared */
if (!swidget->prepared || swidget->use_count > 1)
return;
if (widget_ops[widget->id].ipc_unprepare)
/* unprepare the source widget */
widget_ops[widget->id].ipc_unprepare(swidget);
swidget->prepared = false;
/* unprepare all widgets in the sink paths */
snd_soc_dapm_widget_for_each_sink_path(widget, p) {
if (!p->walking && p->sink->dobj.private) {
p->walking = true;
sof_unprepare_widgets_in_path(sdev, p->sink);
p->walking = false;
}
}
}
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)
{
const struct sof_ipc_tplg_ops *ipc_tplg_ops = sdev->ipc->ops->tplg;
const struct sof_ipc_tplg_widget_ops *widget_ops = ipc_tplg_ops->widget;
struct snd_sof_widget *swidget = widget->dobj.private;
struct snd_soc_dapm_path *p;
int ret;
if (!widget_ops[widget->id].ipc_prepare || swidget->prepared)
goto sink_prepare;
/* prepare the source widget */
ret = widget_ops[widget->id].ipc_prepare(swidget, fe_params, platform_params,
pipeline_params, dir);
if (ret < 0) {
dev_err(sdev->dev, "failed to prepare widget %s\n", widget->name);
return ret;
}
swidget->prepared = true;
sink_prepare:
/* prepare all widgets in the sink paths */
snd_soc_dapm_widget_for_each_sink_path(widget, p) {
if (!p->walking && p->sink->dobj.private) {
p->walking = true;
ret = sof_prepare_widgets_in_path(sdev, p->sink, fe_params,
platform_params, pipeline_params, dir);
p->walking = false;
if (ret < 0) {
/* unprepare the source widget */
if (widget_ops[widget->id].ipc_unprepare && swidget->prepared) {
widget_ops[widget->id].ipc_unprepare(swidget);
swidget->prepared = false;
}
return ret;
}
}
}
return 0;
}
/*
* 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_soc_dapm_path *p;
int err;
int ret = 0;
/* free all widgets even in case of error to keep use counts balanced */
snd_soc_dapm_widget_for_each_sink_path(widget, p) {
if (!p->walking && p->sink->dobj.private && widget->dobj.private) {
p->walking = true;
if (WIDGET_IS_AIF_OR_DAI(widget->id)) {
err = sof_widget_free(sdev, widget->dobj.private);
if (err < 0)
ret = err;
}
err = sof_widget_free(sdev, p->sink->dobj.private);
if (err < 0)
ret = err;
err = sof_free_widgets_in_path(sdev, p->sink, dir);
if (err < 0)
ret = err;
p->walking = false;
}
}
return ret;
}
/*
* 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_soc_dapm_path *p;
int ret;
snd_soc_dapm_widget_for_each_sink_path(widget, p) {
if (!p->walking && p->sink->dobj.private && widget->dobj.private) {
p->walking = true;
if (WIDGET_IS_AIF_OR_DAI(widget->id)) {
ret = sof_widget_setup(sdev, widget->dobj.private);
if (ret < 0)
goto out;
}
ret = sof_widget_setup(sdev, p->sink->dobj.private);
if (ret < 0) {
if (WIDGET_IS_AIF_OR_DAI(widget->id))
sof_widget_free(sdev, widget->dobj.private);
goto out;
}
ret = sof_set_up_widgets_in_path(sdev, p->sink, dir);
if (ret < 0) {
if (WIDGET_IS_AIF_OR_DAI(widget->id))
sof_widget_free(sdev, widget->dobj.private);
sof_widget_free(sdev, p->sink->dobj.private);
}
out:
p->walking = false;
if (ret < 0)
return ret;
}
}
return 0;
}
static int
sof_walk_widgets_in_order(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget_list *list,
struct snd_pcm_hw_params *fe_params,
struct snd_sof_platform_stream_params *platform_params, int dir,
enum sof_widget_op op)
{
struct snd_soc_dapm_widget *widget;
char *str;
int ret = 0;
int i;
for_each_dapm_widgets(list, i, widget) {
/* starting widget for playback is AIF type */
if (dir == SNDRV_PCM_STREAM_PLAYBACK && !WIDGET_IS_AIF(widget->id))
continue;
/* starting widget for capture is DAI type */
if (dir == SNDRV_PCM_STREAM_CAPTURE && !WIDGET_IS_DAI(widget->id))
continue;
switch (op) {
case SOF_WIDGET_SETUP:
ret = sof_set_up_widgets_in_path(sdev, widget, dir);
str = "set up";
break;
case SOF_WIDGET_FREE:
ret = sof_free_widgets_in_path(sdev, widget, dir);
str = "free";
break;
case SOF_WIDGET_PREPARE:
{
struct snd_pcm_hw_params pipeline_params;
str = "prepare";
/*
* When walking the list of connected widgets, the pipeline_params for each
* widget is modified by the source widget in the path. Use a local
* copy of the runtime params as the pipeline_params so that the runtime
* params does not get overwritten.
*/
memcpy(&pipeline_params, fe_params, sizeof(*fe_params));
ret = sof_prepare_widgets_in_path(sdev, widget, fe_params,
platform_params, &pipeline_params, dir);
break;
}
case SOF_WIDGET_UNPREPARE:
sof_unprepare_widgets_in_path(sdev, widget);
break;
default:
dev_err(sdev->dev, "Invalid widget op %d\n", op);
return -EINVAL;
}
if (ret < 0) {
dev_err(sdev->dev, "Failed to %s connected widgets\n", str);
return ret;
}
}
return 0;
}
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)
{
const struct sof_ipc_tplg_ops *ipc_tplg_ops = sdev->ipc->ops->tplg;
struct snd_soc_dapm_widget_list *list = spcm->stream[dir].list;
struct snd_soc_dapm_widget *widget;
int i, ret;
/* nothing to set up */
if (!list)
return 0;
/*
* Prepare widgets for set up. The prepare step is used to allocate memory, assign
* instance ID and pick the widget configuration based on the runtime PCM params.
*/
ret = sof_walk_widgets_in_order(sdev, list, fe_params, platform_params,
dir, SOF_WIDGET_PREPARE);
if (ret < 0)
return ret;
/* Set up is used to send the IPC to the DSP to create the widget */
ret = sof_walk_widgets_in_order(sdev, list, fe_params, platform_params,
dir, SOF_WIDGET_SETUP);
if (ret < 0) {
ret = sof_walk_widgets_in_order(sdev, list, fe_params, platform_params,
dir, SOF_WIDGET_UNPREPARE);
return ret;
}
/*
* error in setting pipeline connections will result in route status being reset for
* routes that were successfully set up when the widgets are freed.
*/
ret = sof_setup_pipeline_connections(sdev, list, dir);
if (ret < 0)
goto widget_free;
/* complete pipelines */
for_each_dapm_widgets(list, i, widget) {
struct snd_sof_widget *swidget = widget->dobj.private;
struct snd_sof_widget *pipe_widget;
if (!swidget)
continue;
pipe_widget = swidget->pipe_widget;
if (!pipe_widget) {
dev_err(sdev->dev, "error: no pipeline widget found for %s\n",
swidget->widget->name);
ret = -EINVAL;
goto widget_free;
}
if (pipe_widget->complete)
continue;
if (ipc_tplg_ops->pipeline_complete) {
pipe_widget->complete = ipc_tplg_ops->pipeline_complete(sdev, pipe_widget);
if (pipe_widget->complete < 0) {
ret = pipe_widget->complete;
goto widget_free;
}
}
}
return 0;
widget_free:
sof_walk_widgets_in_order(sdev, list, fe_params, platform_params, dir,
SOF_WIDGET_FREE);
sof_walk_widgets_in_order(sdev, list, NULL, NULL, dir, SOF_WIDGET_UNPREPARE);
return ret;
}
int sof_widget_list_free(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm, int dir)
{
struct snd_soc_dapm_widget_list *list = spcm->stream[dir].list;
int ret;
/* nothing to free */
if (!list)
return 0;
/* send IPC to free widget in the DSP */
ret = sof_walk_widgets_in_order(sdev, list, NULL, NULL, dir, SOF_WIDGET_FREE);
/* unprepare the widget */
sof_walk_widgets_in_order(sdev, list, NULL, NULL, dir, SOF_WIDGET_UNPREPARE);
snd_soc_dapm_dai_free_widgets(&list);
spcm->stream[dir].list = NULL;
return ret;
}
/*
* 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)
{
struct snd_pcm_substream *substream;
struct snd_sof_pcm *spcm;
bool d0i3_compatible_active = false;
int dir;
list_for_each_entry(spcm, &sdev->pcm_list, list) {
for_each_pcm_streams(dir) {
substream = spcm->stream[dir].substream;
if (!substream || !substream->runtime)
continue;
/*
* substream->runtime being not NULL indicates
* that the stream is open. No need to check the
* stream state.
*/
if (!spcm->stream[dir].d0i3_compatible)
return false;
d0i3_compatible_active = true;
}
}
return d0i3_compatible_active;
}
EXPORT_SYMBOL(snd_sof_dsp_only_d0i3_compatible_stream_active);
bool snd_sof_stream_suspend_ignored(struct snd_sof_dev *sdev)
{
struct snd_sof_pcm *spcm;
list_for_each_entry(spcm, &sdev->pcm_list, list) {
if (spcm->stream[SNDRV_PCM_STREAM_PLAYBACK].suspend_ignored ||
spcm->stream[SNDRV_PCM_STREAM_CAPTURE].suspend_ignored)
return true;
}
return false;
}
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)
{
const struct sof_ipc_pcm_ops *pcm_ops = sdev->ipc->ops->pcm;
int ret;
/* Send PCM_FREE IPC to reset pipeline */
if (pcm_ops->hw_free && spcm->prepared[substream->stream]) {
ret = pcm_ops->hw_free(sdev->component, substream);
if (ret < 0)
return ret;
}
spcm->prepared[substream->stream] = false;
/* stop the DMA */
ret = snd_sof_pcm_platform_hw_free(sdev, substream);
if (ret < 0)
return ret;
/* free widget list */
if (free_widget_list) {
ret = sof_widget_list_free(sdev, spcm, dir);
if (ret < 0)
dev_err(sdev->dev, "failed to free widgets during suspend\n");
}
return ret;
}
/*
* Generic object lookup APIs.
*/
struct snd_sof_pcm *snd_sof_find_spcm_name(struct snd_soc_component *scomp,
const char *name)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
struct snd_sof_pcm *spcm;
list_for_each_entry(spcm, &sdev->pcm_list, list) {
/* match with PCM dai name */
if (strcmp(spcm->pcm.dai_name, name) == 0)
return spcm;
/* match with playback caps name if set */
if (*spcm->pcm.caps[0].name &&
!strcmp(spcm->pcm.caps[0].name, name))
return spcm;
/* match with capture caps name if set */
if (*spcm->pcm.caps[1].name &&
!strcmp(spcm->pcm.caps[1].name, name))
return spcm;
}
return NULL;
}
struct snd_sof_pcm *snd_sof_find_spcm_comp(struct snd_soc_component *scomp,
unsigned int comp_id,
int *direction)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
struct snd_sof_pcm *spcm;
int dir;
list_for_each_entry(spcm, &sdev->pcm_list, list) {
for_each_pcm_streams(dir) {
if (spcm->stream[dir].comp_id == comp_id) {
*direction = dir;
return spcm;
}
}
}
return NULL;
}
struct snd_sof_widget *snd_sof_find_swidget(struct snd_soc_component *scomp,
const char *name)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
struct snd_sof_widget *swidget;
list_for_each_entry(swidget, &sdev->widget_list, list) {
if (strcmp(name, swidget->widget->name) == 0)
return swidget;
}
return NULL;
}
/* 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_dev *sdev = snd_soc_component_get_drvdata(scomp);
struct snd_sof_widget *swidget;
enum snd_soc_dapm_type type;
if (dir == SNDRV_PCM_STREAM_PLAYBACK)
type = snd_soc_dapm_aif_in;
else
type = snd_soc_dapm_aif_out;
list_for_each_entry(swidget, &sdev->widget_list, list) {
if (!strcmp(pcm_name, swidget->widget->sname) &&
swidget->id == type)
return swidget;
}
return NULL;
}
struct snd_sof_dai *snd_sof_find_dai(struct snd_soc_component *scomp,
const char *name)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
struct snd_sof_dai *dai;
list_for_each_entry(dai, &sdev->dai_list, list) {
if (dai->name && (strcmp(name, dai->name) == 0))
return dai;
}
return NULL;
}
static int sof_dai_get_clk(struct snd_soc_pcm_runtime *rtd, int clk_type)
{
struct snd_soc_component *component =
snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
struct snd_sof_dai *dai =
snd_sof_find_dai(component, (char *)rtd->dai_link->name);
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
/* use the tplg configured mclk if existed */
if (!dai)
return 0;
if (tplg_ops->dai_get_clk)
return tplg_ops->dai_get_clk(sdev, dai, clk_type);
return 0;
}
/*
* 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)
{
return sof_dai_get_clk(rtd, SOF_DAI_CLK_INTEL_SSP_MCLK);
}
EXPORT_SYMBOL(sof_dai_get_mclk);
/*
* 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)
{
return sof_dai_get_clk(rtd, SOF_DAI_CLK_INTEL_SSP_BCLK);
}
EXPORT_SYMBOL(sof_dai_get_bclk);
static struct snd_sof_of_mach *sof_of_machine_select(struct snd_sof_dev *sdev)
{
struct snd_sof_pdata *sof_pdata = sdev->pdata;
const struct sof_dev_desc *desc = sof_pdata->desc;
struct snd_sof_of_mach *mach = desc->of_machines;
if (!mach)
return NULL;
for (; mach->compatible; mach++) {
if (of_machine_is_compatible(mach->compatible)) {
sof_pdata->tplg_filename = mach->sof_tplg_filename;
if (mach->fw_filename)
sof_pdata->fw_filename = mach->fw_filename;
return mach;
}
}
return NULL;
}
/*
* SOF Driver enumeration.
*/
int sof_machine_check(struct snd_sof_dev *sdev)
{
struct snd_sof_pdata *sof_pdata = sdev->pdata;
const struct sof_dev_desc *desc = sof_pdata->desc;
struct snd_soc_acpi_mach *mach;
if (!IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)) {
const struct snd_sof_of_mach *of_mach;
/* find machine */
mach = snd_sof_machine_select(sdev);
if (mach) {
sof_pdata->machine = mach;
snd_sof_set_mach_params(mach, sdev);
return 0;
}
of_mach = sof_of_machine_select(sdev);
if (of_mach) {
sof_pdata->of_machine = of_mach;
return 0;
}
if (!IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)) {
dev_err(sdev->dev, "error: no matching ASoC machine driver found - aborting probe\n");
return -ENODEV;
}
} else {
dev_warn(sdev->dev, "Force to use nocodec mode\n");
}
/* select nocodec mode */
dev_warn(sdev->dev, "Using nocodec machine driver\n");
mach = devm_kzalloc(sdev->dev, sizeof(*mach), GFP_KERNEL);
if (!mach)
return -ENOMEM;
mach->drv_name = "sof-nocodec";
if (!sof_pdata->tplg_filename)
sof_pdata->tplg_filename = desc->nocodec_tplg_filename;
sof_pdata->machine = mach;
snd_sof_set_mach_params(mach, sdev);
return 0;
}
EXPORT_SYMBOL(sof_machine_check);
int sof_machine_register(struct snd_sof_dev *sdev, void *pdata)
{
struct snd_sof_pdata *plat_data = pdata;
const char *drv_name;
const void *mach;
int size;
drv_name = plat_data->machine->drv_name;
mach = plat_data->machine;
size = sizeof(*plat_data->machine);
/* register machine driver, pass machine info as pdata */
plat_data->pdev_mach =
platform_device_register_data(sdev->dev, drv_name,
PLATFORM_DEVID_NONE, mach, size);
if (IS_ERR(plat_data->pdev_mach))
return PTR_ERR(plat_data->pdev_mach);
dev_dbg(sdev->dev, "created machine %s\n",
dev_name(&plat_data->pdev_mach->dev));
return 0;
}
EXPORT_SYMBOL(sof_machine_register);
void sof_machine_unregister(struct snd_sof_dev *sdev, void *pdata)
{
struct snd_sof_pdata *plat_data = pdata;
if (!IS_ERR_OR_NULL(plat_data->pdev_mach))
platform_device_unregister(plat_data->pdev_mach);
}
EXPORT_SYMBOL(sof_machine_unregister);