1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _TPM_DEV_H
3#define _TPM_DEV_H
4
5#include <linux/poll.h>
6#include "tpm.h"
7
8struct file_priv {
9 struct tpm_chip *chip;
10 struct tpm_space *space;
11
12 struct mutex buffer_mutex;
13 struct timer_list user_read_timer; /* user needs to claim result */
14 struct work_struct timeout_work;
15 struct work_struct async_work;
16 wait_queue_head_t async_wait;
17 ssize_t response_length;
18 bool response_read;
19 bool command_enqueued;
20
21 u8 data_buffer[TPM_BUFSIZE];
22};
23
24void tpm_common_open(struct file *file, struct tpm_chip *chip,
25 struct file_priv *priv, struct tpm_space *space);
26ssize_t tpm_common_read(struct file *file, char __user *buf,
27 size_t size, loff_t *off);
28ssize_t tpm_common_write(struct file *file, const char __user *buf,
29 size_t size, loff_t *off);
30__poll_t tpm_common_poll(struct file *file, poll_table *wait);
31
32void tpm_common_release(struct file *file, struct file_priv *priv);
33#endif
34

source code of linux/drivers/char/tpm/tpm-dev.h