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