xref: /openbmc/linux/include/linux/mfd/rsmu.h (revision a1867f85e06edacd82956d3422caa2b9074f4321)
1*a1867f85SMin Li /* SPDX-License-Identifier: GPL-2.0+ */
2*a1867f85SMin Li /*
3*a1867f85SMin Li  * Core interface for Renesas Synchronization Management Unit (SMU) devices.
4*a1867f85SMin Li  *
5*a1867f85SMin Li  * Copyright (C) 2021 Integrated Device Technology, Inc., a Renesas Company.
6*a1867f85SMin Li  */
7*a1867f85SMin Li 
8*a1867f85SMin Li #ifndef __LINUX_MFD_RSMU_H
9*a1867f85SMin Li #define __LINUX_MFD_RSMU_H
10*a1867f85SMin Li 
11*a1867f85SMin Li /* The supported devices are ClockMatrix, Sabre and SnowLotus */
12*a1867f85SMin Li enum rsmu_type {
13*a1867f85SMin Li 	RSMU_CM		= 0x34000,
14*a1867f85SMin Li 	RSMU_SABRE	= 0x33810,
15*a1867f85SMin Li 	RSMU_SL		= 0x19850,
16*a1867f85SMin Li };
17*a1867f85SMin Li 
18*a1867f85SMin Li /**
19*a1867f85SMin Li  *
20*a1867f85SMin Li  * struct rsmu_ddata - device data structure for sub devices.
21*a1867f85SMin Li  *
22*a1867f85SMin Li  * @dev:    i2c/spi device.
23*a1867f85SMin Li  * @regmap: i2c/spi bus access.
24*a1867f85SMin Li  * @lock:   mutex used by sub devices to make sure a series of
25*a1867f85SMin Li  *          bus access requests are not interrupted.
26*a1867f85SMin Li  * @type:   RSMU device type.
27*a1867f85SMin Li  * @page:   i2c/spi bus driver internal use only.
28*a1867f85SMin Li  */
29*a1867f85SMin Li struct rsmu_ddata {
30*a1867f85SMin Li 	struct device *dev;
31*a1867f85SMin Li 	struct regmap *regmap;
32*a1867f85SMin Li 	struct mutex lock;
33*a1867f85SMin Li 	enum rsmu_type type;
34*a1867f85SMin Li 	u16 page;
35*a1867f85SMin Li };
36*a1867f85SMin Li #endif /*  __LINUX_MFD_RSMU_H */
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