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
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