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The Linux LP (parallel) device driver.

Paul Dwerryhouse

6th December, 1997

This document describes the operation of the Linux parallel device driver verb, found in drivers/char/lp.c, in the Linux kernel tree. It is based on the code found in the 2.1.x series of the Linux kernel.

1. Introduction

2. lp_char(char lpchar, int minor, int use_polling);

3. lp_write_buf(unsigned int minor, const char *buf, int count)

4. lp_write(struct file * file, const char * buf, size_t count, loff_t *ppos)

5. lp_open(struct inode * inode, struct file * file)

6. lp_release(struct inode * inode, struct file * file)

7. lp_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)

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