linux/drivers/char/tpm/tpm_tis_synquacer.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2020 Linaro Ltd.
 *
 * This device driver implements MMIO TPM on SynQuacer Platform.
 */
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/kernel.h>
#include "tpm.h"
#include "tpm_tis_core.h"

/*
 * irq > 0 means: use irq $irq;
 * irq = 0 means: autoprobe for an irq;
 * irq = -1 means: no irq support
 */
struct tpm_tis_synquacer_info { … };

struct tpm_tis_synquacer_phy { … };

static inline struct tpm_tis_synquacer_phy *to_tpm_tis_tcg_phy(struct tpm_tis_data *data)
{ … }

static int tpm_tis_synquacer_read_bytes(struct tpm_tis_data *data, u32 addr,
					u16 len, u8 *result,
					enum tpm_tis_io_mode io_mode)
{ … }

static int tpm_tis_synquacer_write_bytes(struct tpm_tis_data *data, u32 addr,
					 u16 len, const u8 *value,
					 enum tpm_tis_io_mode io_mode)
{ … }

static const struct tpm_tis_phy_ops tpm_tcg_bw = …;

static int tpm_tis_synquacer_init(struct device *dev,
				  struct tpm_tis_synquacer_info *tpm_info)
{ … }

static SIMPLE_DEV_PM_OPS(tpm_tis_synquacer_pm, tpm_pm_suspend, tpm_tis_resume);

static int tpm_tis_synquacer_probe(struct platform_device *pdev)
{ … }

static void tpm_tis_synquacer_remove(struct platform_device *pdev)
{ … }

#ifdef CONFIG_OF
static const struct of_device_id tis_synquacer_of_platform_match[] = …;
MODULE_DEVICE_TABLE(of, tis_synquacer_of_platform_match);
#endif

#ifdef CONFIG_ACPI
static const struct acpi_device_id tpm_synquacer_acpi_tbl[] = …;
MODULE_DEVICE_TABLE(acpi, tpm_synquacer_acpi_tbl);
#endif

static struct platform_driver tis_synquacer_drv = …;

module_platform_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;