diff options
Diffstat (limited to 'sound/soc/sof/sof-audio.c')
| -rw-r--r-- | sound/soc/sof/sof-audio.c | 909 |
1 files changed, 909 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c new file mode 100644 index 000000000..061ab7289 --- /dev/null +++ b/sound/soc/sof/sof-audio.c @@ -0,0 +1,909 @@ +// 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; + + /* skip if the widget is in use or if it is already unprepared */ + if (!swidget || !swidget->prepared || swidget->use_count > 0) + goto sink_unprepare; + + if (widget_ops[widget->id].ipc_unprepare) + /* unprepare the source widget */ + widget_ops[widget->id].ipc_unprepare(swidget); + + swidget->prepared = false; + +sink_unprepare: + /* 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 (!swidget || !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 && 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->id != snd_soc_dapm_aif_in) + continue; + + /* starting widget for capture is DAI type */ + if (dir == SNDRV_PCM_STREAM_CAPTURE && widget->id != snd_soc_dapm_dai_out) + 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; + + if (sof_pdata->subsystem_id_set) { + mach->mach_params.subsystem_vendor = sof_pdata->subsystem_vendor; + mach->mach_params.subsystem_device = sof_pdata->subsystem_device; + mach->mach_params.subsystem_id_set = true; + } + + 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); |