path: root/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. All rights reserved.
//
// Author: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
//

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

static int sof_kcontrol_setup(struct snd_sof_dev *sdev, struct snd_sof_control *scontrol)
{
	int ipc_cmd, ctrl_type;
	int ret;

	/* reset readback offset for scontrol */
	scontrol->readback_offset = 0;

	/* notify DSP of kcontrol values */
	switch (scontrol->cmd) {
	case SOF_CTRL_CMD_VOLUME:
	case SOF_CTRL_CMD_ENUM:
	case SOF_CTRL_CMD_SWITCH:
		ipc_cmd = SOF_IPC_COMP_SET_VALUE;
		ctrl_type = SOF_CTRL_TYPE_VALUE_CHAN_SET;
		break;
	case SOF_CTRL_CMD_BINARY:
		ipc_cmd = SOF_IPC_COMP_SET_DATA;
		ctrl_type = SOF_CTRL_TYPE_DATA_SET;
		break;
	default:
		return 0;
	}

	ret = snd_sof_ipc_set_get_comp_data(scontrol, ipc_cmd, ctrl_type, scontrol->cmd, true);
	if (ret < 0)
		dev_err(sdev->dev, "error: failed kcontrol value set for widget: %d\n",
			scontrol->comp_id);

	return ret;
}

static int sof_dai_config_setup(struct snd_sof_dev *sdev, struct snd_sof_dai *dai)
{
	struct sof_ipc_dai_config *config;
	struct sof_ipc_reply reply;
	int ret;

	config = &dai->dai_config[dai->current_config];
	if (!config) {
		dev_err(sdev->dev, "error: no config for DAI %s\n", dai->name);
		return -EINVAL;
	}

	/* set NONE flag to clear all previous settings */
	config->flags = FIELD_PREP(SOF_DAI_CONFIG_FLAGS_MASK, SOF_DAI_CONFIG_FLAGS_NONE);

	ret = sof_ipc_tx_message(sdev->ipc, config->hdr.cmd, config, config->hdr.size,
				 &reply, sizeof(reply));

	if (ret < 0)
		dev_err(sdev->dev, "error: failed to set dai config for %s\n", dai->name);

	return ret;
}

static int sof_widget_kcontrol_setup(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{
	struct snd_sof_control *scontrol;
	int ret;

	/* set up all controls for the widget */
	list_for_each_entry(scontrol, &sdev->kcontrol_list, list)
		if (scontrol->comp_id == swidget->comp_id) {
			ret = sof_kcontrol_setup(sdev, scontrol);
			if (ret < 0) {
				dev_err(sdev->dev, "error: fail to set up kcontrols for widget %s\n",
					swidget->widget->name);
				return ret;
			}
		}

	return 0;
}

static void sof_reset_route_setup_status(struct snd_sof_dev *sdev, struct snd_sof_widget *widget)
{
	struct snd_sof_route *sroute;

	list_for_each_entry(sroute, &sdev->route_list, list)
		if (sroute->src_widget == widget || sroute->sink_widget == widget)
			sroute->setup = false;
}

int sof_widget_free(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
{
	struct sof_ipc_free ipc_free = {
		.hdr = {
			.size = sizeof(ipc_free),
			.cmd = SOF_IPC_GLB_TPLG_MSG,
		},
		.id = swidget->comp_id,
	};
	struct sof_ipc_reply reply;
	int ret;

	if (!swidget->private)
		return 0;

	/* only free when use_count is 0 */
	if (--swidget->use_count)
		return 0;

	switch (swidget->id) {
	case snd_soc_dapm_scheduler:
		ipc_free.hdr.cmd |= SOF_IPC_TPLG_PIPE_FREE;
		break;
	case snd_soc_dapm_buffer:
		ipc_free.hdr.cmd |= SOF_IPC_TPLG_BUFFER_FREE;
		break;
	default:
		ipc_free.hdr.cmd |= SOF_IPC_TPLG_COMP_FREE;
		break;
	}

	ret = sof_ipc_tx_message(sdev->ipc, ipc_free.hdr.cmd, &ipc_free, sizeof(ipc_free),
				 &reply, sizeof(reply));
	if (ret < 0) {
		dev_err(sdev->dev, "error: failed to free widget %s\n", swidget->widget->name);
		swidget->use_count++;
		return ret;
	}

	/* reset route setup status for all routes that contain this widget */
	sof_reset_route_setup_status(sdev, swidget);
	swidget->complete = 0;
	dev_dbg(sdev->dev, "widget %s freed\n", swidget->widget->name);

	return 0;
}
EXPORT_SYMBOL(sof_widget_free);

int