#include <drm/drmP.h>
#include <linux/poll.h>
#include <linux/slab.h>
#include <linux/module.h>

Functions
	DEFINE_MUTEX (drm_global_mutex)

	EXPORT_SYMBOL (drm_global_mutex)

int	drm_open (struct inode inode, struct file filp)

	EXPORT_SYMBOL (drm_open)

int	drm_stub_open (struct inode inode, struct file filp)

int	drm_fasync (int fd, struct file *filp, int on)

	EXPORT_SYMBOL (drm_fasync)

int	drm_release (struct inode inode, struct file filp)

	EXPORT_SYMBOL (drm_release)

ssize_t	drm_read (struct file filp, char __user buffer, size_t count, loff_t *offset)

	EXPORT_SYMBOL (drm_read)

unsigned int	drm_poll (struct file filp, struct poll_table_struct wait)

	EXPORT_SYMBOL (drm_poll)

Detailed Description

File operations for DRM

Author: Rickard E. (Rik) Faith faith.nosp@m.@val.nosp@m.inux..nosp@m.com; Daryll Strauss daryl.nosp@m.l@va.nosp@m.linux.nosp@m..com; Gareth Hughes garet.nosp@m.h@va.nosp@m.linux.nosp@m..com

Definition in file drm_fops.c.

Function Documentation

DEFINE_MUTEX ( drm_global_mutex )

int drm_fasync	(	int	fd,
		struct file *	filp,
		int	on
	)

No-op.

Definition at line 374 of file drm_fops.c.

int drm_open	(	struct inode *	inode,
		struct file *	filp
	)

Open file.

Parameters

inode	device inode
filp	file pointer.

Returns: zero on success or a negative number on failure.

Searches the DRM device with the same minor number, calls open_helper(), and increments the device open count. If the open count was previous at zero, i.e., it's the first that the device is open, then calls setup().

Definition at line 118 of file drm_fops.c.

unsigned int drm_poll	(	struct file *	filp,
		struct poll_table_struct *	wait
	)

Definition at line 625 of file drm_fops.c.

ssize_t drm_read	(	struct file *	filp,
		char __user *	buffer,
		size_t	count,
		loff_t *	offset
	)

Definition at line 596 of file drm_fops.c.

int drm_release	(	struct inode *	inode,
		struct file *	filp
	)

Release file.

Parameters

inode	device inode
file_priv	DRM file private.

Returns: zero on success or a negative number on failure.

If the hardware lock is held then free it, and take it again for the kernel context since it's necessary to reclaim buffers. Unlink the file private data from its list and free it. Decreases the open count and if it reaches zero calls drm_lastclose().

Since the master is disappearing, so is the possibility to lock.

Definition at line 433 of file drm_fops.c.

int drm_stub_open	(	struct inode *	inode,
		struct file *	filp
	)

File open operation.

Parameters

inode	device inode.
filp	file pointer.

Puts the dev->fops corresponding to the device minor number into filp, call the open method, and restore the file operations.

Definition at line 181 of file drm_fops.c.

EXPORT_SYMBOL ( drm_global_mutex )

EXPORT_SYMBOL ( drm_open )

EXPORT_SYMBOL ( drm_fasync )

EXPORT_SYMBOL ( drm_release )

EXPORT_SYMBOL ( drm_read )

EXPORT_SYMBOL ( drm_poll )

Functions

Detailed Description

Function Documentation