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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/drivers/char/tpm/st33zp24/st33zp24.h
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/* SPDX-License-Identifier: GPL-2.0-only */

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/*

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 * STMicroelectronics TPM Linux driver for TPM ST33ZP24

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 * Copyright (C) 2009 - 2016  STMicroelectronics

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 */

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#ifndef __LOCAL_ST33ZP24_H__

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#define __LOCAL_ST33ZP24_H__

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#define TPM_ST33_I2C		"st33zp24-i2c"

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#define TPM_ST33_SPI		"st33zp24-spi"

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#define TPM_WRITE_DIRECTION	0x80

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#define ST33ZP24_BUFSIZE	2048

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struct st33zp24_dev {

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	struct tpm_chip *chip;

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	void *phy_id;

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	const struct st33zp24_phy_ops *ops;

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	int locality;

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	int irq;

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	u32 intrs;

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	struct gpio_desc *io_lpcpd;

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	wait_queue_head_t read_queue;

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};

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struct st33zp24_phy_ops {

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	int (*send)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size);

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	int (*recv)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size);

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};

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#ifdef CONFIG_PM_SLEEP

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int st33zp24_pm_suspend(struct device *dev);

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int st33zp24_pm_resume(struct device *dev);

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#endif

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int st33zp24_probe(void *phy_id, const struct st33zp24_phy_ops *ops,

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		   struct device *dev, int irq);

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void st33zp24_remove(struct tpm_chip *chip);

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#endif /* __LOCAL_ST33ZP24_H__ */

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