#ifndef _TPM_DEV_H
#define _TPM_DEV_H
#include <linux/poll.h>
#include "tpm.h"
struct file_priv { … };
void tpm_common_open(struct file *file, struct tpm_chip *chip,
struct file_priv *priv, struct tpm_space *space);
ssize_t tpm_common_read(struct file *file, char __user *buf,
size_t size, loff_t *off);
ssize_t tpm_common_write(struct file *file, const char __user *buf,
size_t size, loff_t *off);
__poll_t tpm_common_poll(struct file *file, poll_table *wait);
void tpm_common_release(struct file *file, struct file_priv *priv);
#endif