// 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 <ranjani.sridharan@linux.intel.com> //
/* 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);
/* free DAI config and continue to free widget even if it fails */ if (WIDGET_IS_DAI(swidget->id)) { struct snd_sof_dai_config_data data; unsignedint flags = SOF_DAI_CONFIG_FLAGS_HW_FREE;
data.dai_data = DMA_CHAN_INVALID;
if (tplg_ops && tplg_ops->dai_config) {
err = tplg_ops->dai_config(sdev, swidget, flags, &data); if (err < 0)
dev_err(sdev->dev, "failed to free config for widget %s\n",
swidget->widget->name);
}
}
/* continue to disable core even if IPC fails */ if (tplg_ops && tplg_ops->widget_free) {
ret = tplg_ops->widget_free(sdev, swidget); if (ret < 0 && !err)
err = ret;
}
/* * decrement ref count for cores associated with all modules in the pipeline and clear * the complete flag
*/ if (swidget->id == snd_soc_dapm_scheduler) { int i;
for_each_set_bit(i, &spipe->core_mask, sdev->num_cores) {
ret = snd_sof_dsp_core_put(sdev, i); if (ret < 0) {
dev_err(sdev->dev, "failed to disable target core: %d for pipeline %s\n",
i, swidget->widget->name); if (!err)
err = ret;
}
}
swidget->spipe->complete = 0;
}
/* * free the scheduler widget (same as pipe_widget) associated with the current swidget. * skip for static pipelines
*/ if (swidget->spipe && swidget->dynamic_pipeline_widget &&
swidget->id != snd_soc_dapm_scheduler) {
ret = sof_widget_free_unlocked(sdev, swidget->spipe->pipe_widget); if (ret < 0 && !err)
err = ret;
}
if (!err)
dev_dbg(sdev->dev, "widget %s freed\n", swidget->widget->name);
return err;
}
int sof_widget_free(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{ int ret;
mutex_lock(&swidget->setup_mutex);
ret = sof_widget_free_unlocked(sdev, swidget);
mutex_unlock(&swidget->setup_mutex);
/* 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->spipe || !swidget->spipe->pipe_widget) {
dev_err(sdev->dev, "No pipeline set for %s\n", swidget->widget->name);
ret = -EINVAL; goto use_count_dec;
}
ret = sof_widget_setup_unlocked(sdev, swidget->spipe->pipe_widget); if (ret < 0) goto use_count_dec;
}
/* update ref count for cores associated with all modules in the pipeline */ if (swidget->id == snd_soc_dapm_scheduler) {
for_each_set_bit(i, &spipe->core_mask, sdev->num_cores) {
ret = snd_sof_dsp_core_get(sdev, i); if (ret < 0) {
dev_err(sdev->dev, "failed to enable target core %d for pipeline %s\n",
i, swidget->widget->name); goto pipe_widget_free;
}
}
}
/* setup widget in the DSP */ if (tplg_ops && tplg_ops->widget_setup) {
ret = tplg_ops->widget_setup(sdev, swidget); if (ret < 0) goto pipe_widget_free;
}
/* send config for DAI components */ if (WIDGET_IS_DAI(swidget->id)) { unsignedint flags = SOF_DAI_CONFIG_FLAGS_HW_PARAMS;
/* * The config flags saved during BE DAI hw_params will be used for IPC3. IPC4 does * not use the flags argument.
*/ if (tplg_ops && 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 && tplg_ops->control && tplg_ops->control->widget_kcontrol_setup) {
ret = tplg_ops->control->widget_kcontrol_setup(sdev, swidget); if (ret < 0) goto widget_free;
}
widget_free: /* widget use_count will be decremented by sof_widget_free() */
sof_widget_free_unlocked(sdev, swidget);
use_count_decremented = true;
pipe_widget_free: if (swidget->id != snd_soc_dapm_scheduler) {
sof_widget_free_unlocked(sdev, swidget->spipe->pipe_widget);
} else { int j;
/* decrement ref count for all cores that were updated previously */
for_each_set_bit(j, &spipe->core_mask, sdev->num_cores) { if (j >= i) break;
snd_sof_dsp_core_put(sdev, j);
}
}
use_count_dec: if (!use_count_decremented)
swidget->use_count--;
return ret;
}
int sof_widget_setup(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{ int ret;
mutex_lock(&swidget->setup_mutex);
ret = sof_widget_setup_unlocked(sdev, swidget);
mutex_unlock(&swidget->setup_mutex);
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;
if (tplg_ops && tplg_ops->route_setup) { int ret = tplg_ops->route_setup(sdev, sroute);
if (ret < 0) return ret;
}
sroute->setup = true; return 0;
}
staticint sof_setup_pipeline_connections(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget_list *list, int dir)
{ conststruct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, tplg); struct snd_soc_dapm_widget *widget; struct snd_sof_route *sroute; struct snd_soc_dapm_path *p; int ret = 0; 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 (!widget_in_list(list, p->sink)) continue;
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 (!widget_in_list(list, p->source)) continue;
if (p->source->dobj.private) {
ret = sof_route_setup(sdev, p->source, widget); if (ret < 0) return ret;
}
}
}
}
/* * The above loop handles connections between widgets that belong to the DAPM widget list. * This is not sufficient to handle loopback cases between pipelines configured with * different directions, e.g. a sidetone or an amplifier feedback connected to a speaker * protection module.
*/
list_for_each_entry(sroute, &sdev->route_list, list) { bool src_widget_in_dapm_list, sink_widget_in_dapm_list; struct snd_sof_widget *swidget;
/* * if both source and sink are in the DAPM list, the route must already have been * set up above. And if neither are in the DAPM list, the route shouldn't be * handled now.
*/ if (src_widget_in_dapm_list == sink_widget_in_dapm_list) continue;
/* * At this point either the source widget or the sink widget is in the DAPM list * with a route that might need to be set up. Check the use_count of the widget * that is not in the DAPM list to confirm if it is in use currently before setting * up the route.
*/ if (src_widget_in_dapm_list)
swidget = sroute->sink_widget; else
swidget = sroute->src_widget;
mutex_lock(&swidget->setup_mutex); if (!swidget->use_count) {
mutex_unlock(&swidget->setup_mutex); continue;
}
if (tplg_ops && tplg_ops->route_setup) { /* * this route will get freed when either the source widget or the sink * widget is freed during hw_free
*/
ret = tplg_ops->route_setup(sdev, sroute); if (!ret)
sroute->setup = true;
}
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 (!widget_in_list(list, p->sink)) continue; 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,
list);
p->walking = false; if (ret < 0) { /* unprepare the source widget */ if (widget_ops[widget->id].ipc_unprepare &&
swidget && swidget->prepared && swidget->use_count == 0) {
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)
*/ staticint sof_free_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget, int dir, struct snd_sof_pcm *spcm)
{ struct snd_soc_dapm_widget_list *list = spcm->stream[dir].list; struct snd_soc_dapm_path *p; int err; int ret = 0;
if (is_virtual_widget(sdev, widget, __func__)) return 0;
if (widget->dobj.private) {
err = sof_widget_free(sdev, widget->dobj.private); if (err < 0)
ret = err;
}
/* free all widgets in the sink paths even in case of error to keep use counts balanced */
snd_soc_dapm_widget_for_each_sink_path(widget, p) { if (!p->walking) { if (!widget_in_list(list, p->sink)) continue;
p->walking = true;
err = sof_free_widgets_in_path(sdev, p->sink, dir, spcm); 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.
*/ staticint sof_set_up_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *widget, int dir, struct snd_sof_pcm *spcm)
{ struct snd_sof_pcm_stream_pipeline_list *pipeline_list = &spcm->stream[dir].pipeline_list; struct snd_soc_dapm_widget_list *list = spcm->stream[dir].list; struct snd_sof_widget *swidget = widget->dobj.private; struct snd_sof_pipeline *spipe; struct snd_soc_dapm_path *p; int ret;
if (is_virtual_widget(sdev, widget, __func__)) return 0;
if (swidget) { int i;
ret = sof_widget_setup(sdev, widget->dobj.private); if (ret < 0) return ret;
/* skip populating the pipe_widgets array if it is NULL */ if (!pipeline_list->pipelines) goto sink_setup;
/* * Add the widget's pipe_widget to the list of pipelines to be triggered if not * already in the list. This will result in the pipelines getting added in the * order source to sink.
*/ for (i = 0; i < pipeline_list->count; i++) {
spipe = pipeline_list->pipelines[i]; if (spipe == swidget->spipe) break;
}
if (i == pipeline_list->count) {
pipeline_list->count++;
pipeline_list->pipelines[i] = swidget->spipe;
}
}
sink_setup:
snd_soc_dapm_widget_for_each_sink_path(widget, p) { if (!p->walking) { if (!widget_in_list(list, p->sink)) continue;
p->walking = true;
ret = sof_set_up_widgets_in_path(sdev, p->sink, dir, spcm);
p->walking = false; if (ret < 0) { if (swidget)
sof_widget_free(sdev, swidget); return ret;
}
}
}
return 0;
}
staticint
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)
{ struct snd_soc_dapm_widget_list *list = spcm->stream[dir].list; struct snd_soc_dapm_widget *widget; char *str; int ret = 0; int i;
if (!list) return 0;
for_each_dapm_widgets(list, i, widget) { if (is_virtual_widget(sdev, widget, __func__)) continue;
/* 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, spcm);
str = "set up"; break; case SOF_WIDGET_FREE:
ret = sof_free_widgets_in_path(sdev, widget, dir, spcm);
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, list); break;
} case SOF_WIDGET_UNPREPARE:
sof_unprepare_widgets_in_path(sdev, widget, list); 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)
{ conststruct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, 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, spcm, 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, spcm, fe_params, platform_params,
dir, SOF_WIDGET_SETUP); if (ret < 0) {
sof_walk_widgets_in_order(sdev, spcm, 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;
if (!swidget || sdev->dspless_mode_selected) continue;
spipe = swidget->spipe; if (!spipe) {
dev_err(sdev->dev, "no pipeline found for %s\n",
swidget->widget->name);
ret = -EINVAL; goto widget_free;
}
pipe_widget = spipe->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 (spipe->complete) continue;
if (tplg_ops && tplg_ops->pipeline_complete) {
spipe->complete = tplg_ops->pipeline_complete(sdev, pipe_widget); if (spipe->complete < 0) {
ret = spipe->complete; goto widget_free;
}
}
}
/* * 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;
/* * substream->runtime being not NULL indicates * that the stream is open. No need to check the * stream state.
*/ if (!spcm->stream[dir].d0i3_compatible) returnfalse;
/* use the tplg configured mclk if existed */ if (!dai) return 0;
if (tplg_ops && tplg_ops->dai_get_param) return tplg_ops->dai_get_param(sdev, dai, param_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_param(rtd, SOF_DAI_PARAM_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_param(rtd, SOF_DAI_PARAM_INTEL_SSP_BCLK);
}
EXPORT_SYMBOL(sof_dai_get_bclk);
/* * 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)
{ return sof_dai_get_param(rtd, SOF_DAI_PARAM_INTEL_SSP_TDM_SLOTS);
}
EXPORT_SYMBOL(sof_dai_get_tdm_slots);
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