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drm: Enable drm drivers to add drm sysfs devices.

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Export utility functions for drivers to add specialized devices in the
sysfs drm class subdirectory.

Initially this will be needed form TTM to add a virtual device that
handles power management.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Thomas Hellstrom 2009-08-17 16:28:37 +02:00 committed by Dave Airlie
parent a0724fcf82
commit 327c225bd5
2 changed files with 37 additions and 0 deletions
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25
drivers/gpu/drm/drm_sysfs.c
View file

@ -16,6 +16,7 @@
#include <linux/kdev_t.h>
#include <linux/err.h>
#include "drm_sysfs.h"
#include "drm_core.h"
#include "drmP.h"
@ -515,3 +516,27 @@ void drm_sysfs_device_remove(struct drm_minor *minor)
{
device_unregister(&minor->kdev);
}
/**
* drm_class_device_register - Register a struct device in the drm class.
*
* @dev: pointer to struct device to register.
*
* @dev should have all relevant members pre-filled with the exception
* of the class member. In particular, the device_type member must
* be set.
*/
int drm_class_device_register(struct device *dev)
{
dev->class = drm_class;
return device_register(dev);
}
EXPORT_SYMBOL_GPL(drm_class_device_register);
void drm_class_device_unregister(struct device *dev)
{
return device_unregister(dev);
}
EXPORT_SYMBOL_GPL(drm_class_device_unregister);

12
include/drm/drm_sysfs.h Normal file
View file

@ -0,0 +1,12 @@
#ifndef _DRM_SYSFS_H_
#define _DRM_SYSFS_H_
/**
* This minimalistic include file is intended for users (read TTM) that
* don't want to include the full drmP.h file.
*/
extern int drm_class_device_register(struct device *dev);
extern void drm_class_device_unregister(struct device *dev);
#endif