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/* SPDX-License-Identifier: GPL-2.0 */
/*
* The MIPI SDCA specification is available for public downloads at
* https://www.mipi.org/mipi-sdca-v1-0-download
*
* Copyright (C) 2025 Cirrus Logic, Inc. and
* Cirrus Logic International Semiconductor Ltd.
*/
#ifndef __SDCA_CLASS_H__
#define __SDCA_CLASS_H__
#include <linux/completion.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
struct device;
struct regmap;
struct sdw_slave;
struct sdca_function_data;
/**
* struct sdca_class_ops - optional codec-provided class callbacks
* @populate_function: fill @function (entities, clusters, init_table, ...)
* from static tables in place of sdca_parse_function() on
* DT/non-DisCo platforms. Called once per SDCA function with
* @dev pointing at that function's device. Pure data source;
* performs no bus I/O. Return 0 on success or a negative errno.
*/
struct sdca_class_ops {
int (*populate_function)(struct device *dev,
struct sdca_function_data *function);
};
struct sdca_class_drv {
struct device *dev;
struct regmap *dev_regmap;
struct sdw_slave *sdw;
struct sdca_interrupt_info *irq_info;
const struct sdca_class_ops *ops;
struct mutex regmap_lock;
/* Serialise function initialisations */
struct mutex init_lock;
struct work_struct boot_work;
};
/* Library helpers used by codec-specific SDCA SoundWire drivers. */
int sdca_class_probe(struct sdw_slave *sdw,
struct sdca_class_drv *drv,
const struct sdca_class_ops *ops);
void sdca_class_remove(struct sdca_class_drv *drv);
/*
* PM helpers. Codec drivers embed sdca_class_drv in their own priv,
* own dev_set_drvdata(), and compose these into their own dev_pm_ops:
*
* static int wcd_runtime_suspend(struct device *dev) {
* struct wcd_priv *priv = dev_get_drvdata(dev);
* return sdca_class_runtime_suspend(&priv->class);
* }
*/
int sdca_class_runtime_suspend(struct sdca_class_drv *drv);
int sdca_class_runtime_resume(struct sdca_class_drv *drv);
int sdca_class_system_suspend(struct sdca_class_drv *drv);
int sdca_class_system_resume(struct sdca_class_drv *drv);
#endif /* __SDCA_CLASS_H__ */
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