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 | |