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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Lochnagar internals
*
* Copyright (c) 2013-2018 Cirrus Logic, Inc. and
* Cirrus Logic International Semiconductor Ltd.
*
* Author: Charles Keepax <[email protected]>
*/
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/regmap.h>
#ifndef CIRRUS_LOCHNAGAR_H
#define CIRRUS_LOCHNAGAR_H
enum lochnagar_type {
LOCHNAGAR1,
LOCHNAGAR2,
};
/**
* struct lochnagar - Core data for the Lochnagar audio board driver.
*
* @type: The type of Lochnagar device connected.
* @dev: A pointer to the struct device for the main MFD.
* @regmap: The devices main register map.
* @analogue_config_lock: Lock used to protect updates in the analogue
* configuration as these must not be changed whilst the hardware is processing
* the last update.
*/
struct lochnagar {
enum lochnagar_type type;
struct device *dev;
struct regmap *regmap;
/* Lock to protect updates to the analogue configuration */
struct mutex analogue_config_lock;
};
/* Register Addresses */
#define LOCHNAGAR_SOFTWARE_RESET 0x00
#define LOCHNAGAR_FIRMWARE_ID1 0x01
#define LOCHNAGAR_FIRMWARE_ID2 0x02
/* (0x0000) Software Reset */
#define LOCHNAGAR_DEVICE_ID_MASK 0xFFFC
#define LOCHNAGAR_DEVICE_ID_SHIFT 2
#define LOCHNAGAR_REV_ID_MASK 0x0003
#define LOCHNAGAR_REV_ID_SHIFT 0
int lochnagar_update_config(struct lochnagar *lochnagar);
#endif