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
to_tpm_tis_spi_phy(struct tpm_tis_data * data)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
cr50_spi_probe(struct spi_device * spi)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