linux/drivers/char/tpm/tpm_tis_spi.h
Johannes Holland 6422cbd3c5 tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops
Only tpm_tis and tpm_tis_synquacer have a dedicated way to access
multiple bytes at once, every other driver will just fall back to
read_bytes/write_bytes. Therefore, remove the read16/read32/write32
calls and move their logic to read_bytes/write_bytes.

Suggested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Johannes Holland <johannes.holland@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2022-05-23 18:47:49 +03:00

50 lines
1.2 KiB
C

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