1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Core interface for Renesas Synchronization Management Unit (SMU) devices. 4 * 5 * Copyright (C) 2021 Integrated Device Technology, Inc., a Renesas Company. 6 */ 7 8 #ifndef __LINUX_MFD_RSMU_H 9 #define __LINUX_MFD_RSMU_H 10 11 #define RSMU_MAX_WRITE_COUNT (255) 12 #define RSMU_MAX_READ_COUNT (255) 13 14 /* The supported devices are ClockMatrix, Sabre and SnowLotus */ 15 enum rsmu_type { 16 RSMU_CM = 0x34000, 17 RSMU_SABRE = 0x33810, 18 RSMU_SL = 0x19850, 19 }; 20 21 /** 22 * 23 * struct rsmu_ddata - device data structure for sub devices. 24 * 25 * @dev: i2c/spi device. 26 * @regmap: i2c/spi bus access. 27 * @lock: mutex used by sub devices to make sure a series of 28 * bus access requests are not interrupted. 29 * @type: RSMU device type. 30 * @page: i2c/spi bus driver internal use only. 31 */ 32 struct rsmu_ddata { 33 struct device *dev; 34 struct regmap *regmap; 35 struct mutex lock; 36 enum rsmu_type type; 37 u32 page; 38 }; 39 #endif /* __LINUX_MFD_RSMU_H */ 40