54 строки
1.4 KiB
C
54 строки
1.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2015 Infineon Technologies AG
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* Copyright (C) 2016 STMicroelectronics SAS
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*/
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#ifndef TPM_TIS_SPI_H
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#define TPM_TIS_SPI_H
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#include "tpm_tis_core.h"
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struct tpm_tis_spi_phy {
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struct tpm_tis_data priv;
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struct spi_device *spi_device;
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int (*flow_control)(struct tpm_tis_spi_phy *phy,
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struct spi_transfer *xfer);
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struct completion ready;
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unsigned long wake_after;
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u8 *iobuf;
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};
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static inline struct tpm_tis_spi_phy *to_tpm_tis_spi_phy(struct tpm_tis_data *data)
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{
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return container_of(data, struct tpm_tis_spi_phy, priv);
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}
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extern int tpm_tis_spi_init(struct spi_device *spi, struct tpm_tis_spi_phy *phy,
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int irq, const struct tpm_tis_phy_ops *phy_ops);
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extern int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
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u8 *in, const u8 *out);
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extern int tpm_tis_spi_read16(struct tpm_tis_data *data, u32 addr, u16 *result);
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extern int tpm_tis_spi_read32(struct tpm_tis_data *data, u32 addr, u32 *result);
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extern int tpm_tis_spi_write32(struct tpm_tis_data *data, u32 addr, u32 value);
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#ifdef CONFIG_TCG_TIS_SPI_CR50
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extern int cr50_spi_probe(struct spi_device *spi);
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#else
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static inline int cr50_spi_probe(struct spi_device *spi)
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{
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return -ENODEV;
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}
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#endif
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#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_TCG_TIS_SPI_CR50)
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extern int tpm_tis_spi_resume(struct device *dev);
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#else
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#define tpm_tis_spi_resume NULL
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#endif
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#endif
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