1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2015 Infineon Technologies AG 4 * Copyright (C) 2016 STMicroelectronics SAS 5 */ 6 7 #ifndef TPM_TIS_SPI_H 8 #define TPM_TIS_SPI_H 9 10 #include "tpm_tis_core.h" 11 12 struct tpm_tis_spi_phy { 13 struct tpm_tis_data priv; 14 struct spi_device *spi_device; 15 int (*flow_control)(struct tpm_tis_spi_phy *phy, 16 struct spi_transfer *xfer); 17 struct completion ready; 18 unsigned long wake_after; 19 20 u8 *iobuf; 21 }; 22 23 static inline struct tpm_tis_spi_phy *to_tpm_tis_spi_phy(struct tpm_tis_data *data) 24 { 25 return container_of(data, struct tpm_tis_spi_phy, priv); 26 } 27 28 extern int tpm_tis_spi_init(struct spi_device *spi, struct tpm_tis_spi_phy *phy, 29 int irq, const struct tpm_tis_phy_ops *phy_ops); 30 31 extern int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len, 32 u8 *in, const u8 *out); 33 34 #ifdef CONFIG_TCG_TIS_SPI_CR50 35 extern int cr50_spi_probe(struct spi_device *spi); 36 #else 37 static inline int cr50_spi_probe(struct spi_device *spi) 38 { 39 return -ENODEV; 40 } 41 #endif 42 43 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_TCG_TIS_SPI_CR50) 44 extern int tpm_tis_spi_resume(struct device *dev); 45 #else 46 #define tpm_tis_spi_resume NULL 47 #endif 48 49 #endif 50