2019-06-01 08:08:42 +00:00
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// SPDX-License-Identifier: GPL-2.0-only
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2006-01-20 22:08:59 +00:00
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2005-04-16 22:20:36 +00:00
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/*
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* drm_sysfs.c - Modifications to drm_sysfs_class.c to support
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* extra sysfs attribute from DRM. Normal drm_sysfs_class
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* does not allow adding attributes.
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*
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* Copyright (c) 2004 Jon Smirl <jonsmirl@gmail.com>
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* Copyright (c) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
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* Copyright (c) 2003-2004 IBM Corp.
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*/
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#include <linux/device.h>
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#include <linux/err.h>
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2011-08-30 22:16:33 +00:00
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#include <linux/export.h>
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2019-05-26 17:35:35 +00:00
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#include <linux/gfp.h>
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2019-07-26 17:22:55 +00:00
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#include <linux/i2c.h>
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2019-05-26 17:35:35 +00:00
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#include <linux/kdev_t.h>
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#include <linux/slab.h>
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#include <drm/drm_connector.h>
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#include <drm/drm_device.h>
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#include <drm/drm_file.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_print.h>
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#include <drm/drm_property.h>
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2012-10-02 17:01:07 +00:00
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#include <drm/drm_sysfs.h>
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2019-05-26 17:35:35 +00:00
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2014-09-10 10:43:53 +00:00
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#include "drm_internal.h"
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2019-08-01 11:41:16 +00:00
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#include "drm_crtc_internal.h"
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2005-04-16 22:20:36 +00:00
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2013-10-11 04:07:25 +00:00
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#define to_drm_minor(d) dev_get_drvdata(d)
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#define to_drm_connector(d) dev_get_drvdata(d)
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2007-11-22 04:02:38 +00:00
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2017-04-04 09:52:55 +00:00
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/**
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* DOC: overview
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*
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* DRM provides very little additional support to drivers for sysfs
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* interactions, beyond just all the standard stuff. Drivers who want to expose
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* additional sysfs properties and property groups can attach them at either
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* &drm_device.dev or &drm_connector.kdev.
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*
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* Registration is automatically handled when calling drm_dev_register(), or
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* drm_connector_register() in case of hot-plugged connectors. Unregistration is
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* also automatically handled by drm_dev_unregister() and
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* drm_connector_unregister().
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*/
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2009-08-20 09:02:31 +00:00
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static struct device_type drm_sysfs_device_minor = {
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.name = "drm_minor"
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};
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2015-09-09 12:21:30 +00:00
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struct class *drm_class;
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2011-07-24 00:24:48 +00:00
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static char *drm_devnode(struct device *dev, umode_t *mode)
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2009-04-30 13:23:42 +00:00
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{
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return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev));
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}
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drm: drop obsolete drm_core.h
The drm_core.h header contains a set of constants meant to be used
throughout DRM. However, as it turns out, they're each used just once and
don't bring any benefit. They're also grossly mis-named and lack
name-spacing. This patch inlines them, or moves them into drm_internal.h
as appropriate:
- CORE_AUTHOR and CORE_DESC are inlined into corresponding MODULE_*()
macros. It's just confusing having to follow 2 pointers when trying to
find the definition of these fields. Grep'ping for MODULE_AUTHOR()
should reveal the full information, if there's no strong reason not to.
- CORE_NAME, CORE_DATE, CORE_MAJOR, CORE_MINOR, and CORE_PATCHLEVEL are
inlined into the sysfs 'version' attribute. They're stripped
everywhere else (which is just some printk() statements). CORE_NAME
just doesn't make *any* sense, as we hard-code it in many places,
anyway. The other constants are outdated and just serve
binary-compatibility purposes. Hence, inline them in 'version' sysfs
attribute (we might even try dropping it..).
- DRM_IF_MAJOR and DRM_IF_MINOR are moved into drm_internal.h as they're
only used by the global ioctl handlers. Furthermore, versioning
interfaces breaks backports and as such is deprecated, anyway. We just
keep them for historic reasons. I doubt anyone will ever modify them
again.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160901124837.680-6-dh.herrmann@gmail.com
2016-09-01 12:48:36 +00:00
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static CLASS_ATTR_STRING(version, S_IRUGO, "drm 1.1.0 20060810");
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2005-04-16 22:20:36 +00:00
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/**
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2015-09-09 12:21:30 +00:00
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* drm_sysfs_init - initialize sysfs helpers
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*
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* This is used to create the DRM class, which is the implicit parent of any
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* other top-level DRM sysfs objects.
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2005-04-16 22:20:36 +00:00
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*
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2015-09-09 12:21:30 +00:00
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* You must call drm_sysfs_destroy() to release the allocated resources.
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2005-04-16 22:20:36 +00:00
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*
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2015-09-09 12:21:30 +00:00
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* Return: 0 on success, negative error code on failure.
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2005-04-16 22:20:36 +00:00
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*/
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2015-09-09 12:21:30 +00:00
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int drm_sysfs_init(void)
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2005-04-16 22:20:36 +00:00
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{
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2006-10-10 21:23:37 +00:00
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int err;
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2006-01-20 22:08:59 +00:00
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2015-09-09 12:21:30 +00:00
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drm_class = class_create(THIS_MODULE, "drm");
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if (IS_ERR(drm_class))
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return PTR_ERR(drm_class);
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2007-11-22 04:02:38 +00:00
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2015-09-09 12:21:30 +00:00
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err = class_create_file(drm_class, &class_attr_version.attr);
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if (err) {
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class_destroy(drm_class);
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drm_class = NULL;
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return err;
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}
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2006-10-10 21:23:37 +00:00
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2015-09-09 12:21:30 +00:00
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drm_class->devnode = drm_devnode;
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return 0;
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2005-04-16 22:20:36 +00:00
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}
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/**
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2007-11-22 04:02:38 +00:00
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* drm_sysfs_destroy - destroys DRM class
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2005-04-16 22:20:36 +00:00
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*
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2007-11-22 04:02:38 +00:00
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* Destroy the DRM device class.
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2005-04-16 22:20:36 +00:00
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*/
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2007-11-22 04:02:38 +00:00
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void drm_sysfs_destroy(void)
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2005-04-16 22:20:36 +00:00
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{
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2015-09-09 12:21:29 +00:00
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if (IS_ERR_OR_NULL(drm_class))
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2005-04-16 22:20:36 +00:00
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return;
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2010-01-05 11:48:09 +00:00
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class_remove_file(drm_class, &class_attr_version.attr);
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2007-11-22 04:02:38 +00:00
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class_destroy(drm_class);
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2012-07-06 17:06:42 +00:00
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drm_class = NULL;
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2005-04-16 22:20:36 +00:00
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}
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2008-11-07 22:05:41 +00:00
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/*
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* Connector properties
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*/
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2015-03-06 12:36:42 +00:00
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static ssize_t status_store(struct device *device,
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2008-11-07 22:05:41 +00:00
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struct device_attribute *attr,
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2015-03-06 12:36:42 +00:00
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const char *buf, size_t count)
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2008-11-07 22:05:41 +00:00
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{
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struct drm_connector *connector = to_drm_connector(device);
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2015-03-06 12:36:42 +00:00
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struct drm_device *dev = connector->dev;
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2015-11-19 16:46:50 +00:00
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enum drm_connector_force old_force;
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2011-03-15 11:40:00 +00:00
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int ret;
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2015-03-06 12:36:42 +00:00
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ret = mutex_lock_interruptible(&dev->mode_config.mutex);
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2011-03-15 11:40:00 +00:00
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if (ret)
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return ret;
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2008-11-07 22:05:41 +00:00
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2015-11-19 16:46:50 +00:00
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old_force = connector->force;
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2015-03-06 12:36:42 +00:00
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2015-11-19 16:46:50 +00:00
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if (sysfs_streq(buf, "detect"))
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2015-03-06 12:36:42 +00:00
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connector->force = 0;
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2015-11-19 16:46:50 +00:00
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else if (sysfs_streq(buf, "on"))
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2015-03-06 12:36:42 +00:00
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connector->force = DRM_FORCE_ON;
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2015-11-19 16:46:50 +00:00
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else if (sysfs_streq(buf, "on-digital"))
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2015-03-06 12:36:42 +00:00
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connector->force = DRM_FORCE_ON_DIGITAL;
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2015-11-19 16:46:50 +00:00
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else if (sysfs_streq(buf, "off"))
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2015-03-06 12:36:42 +00:00
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connector->force = DRM_FORCE_OFF;
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2015-11-19 16:46:50 +00:00
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else
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2015-03-06 12:36:42 +00:00
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ret = -EINVAL;
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2015-11-19 16:46:50 +00:00
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if (old_force != connector->force || !connector->force) {
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DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force updated from %d to %d or reprobing\n",
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2015-03-06 12:36:42 +00:00
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connector->base.id,
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connector->name,
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2015-11-19 16:46:50 +00:00
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old_force, connector->force);
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2015-03-06 12:36:42 +00:00
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2015-11-19 16:46:50 +00:00
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connector->funcs->fill_modes(connector,
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dev->mode_config.max_width,
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dev->mode_config.max_height);
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2015-03-06 12:36:42 +00:00
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}
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mutex_unlock(&dev->mode_config.mutex);
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2015-06-05 22:27:30 +00:00
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return ret ? ret : count;
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2015-03-06 12:36:42 +00:00
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}
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static ssize_t status_show(struct device *device,
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struct device_attribute *attr,
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char *buf)
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{
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struct drm_connector *connector = to_drm_connector(device);
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2016-03-30 09:45:13 +00:00
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enum drm_connector_status status;
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status = READ_ONCE(connector->status);
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2011-03-15 11:40:00 +00:00
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2009-05-31 03:42:25 +00:00
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return snprintf(buf, PAGE_SIZE, "%s\n",
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2016-03-30 09:45:13 +00:00
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drm_get_connector_status_name(status));
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2008-11-07 22:05:41 +00:00
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}
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static ssize_t dpms_show(struct device *device,
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struct device_attribute *attr,
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char *buf)
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{
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struct drm_connector *connector = to_drm_connector(device);
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2015-09-29 07:56:53 +00:00
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int dpms;
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2008-11-07 22:05:41 +00:00
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2015-09-29 07:56:53 +00:00
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dpms = READ_ONCE(connector->dpms);
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2008-11-07 22:05:41 +00:00
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2009-05-31 03:42:25 +00:00
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return snprintf(buf, PAGE_SIZE, "%s\n",
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2015-09-29 07:56:53 +00:00
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drm_get_dpms_name(dpms));
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2008-11-07 22:05:41 +00:00
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}
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static ssize_t enabled_show(struct device *device,
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struct device_attribute *attr,
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char *buf)
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{
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struct drm_connector *connector = to_drm_connector(device);
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2016-03-30 09:45:13 +00:00
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bool enabled;
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enabled = READ_ONCE(connector->encoder);
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2008-11-07 22:05:41 +00:00
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2016-03-30 09:45:13 +00:00
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return snprintf(buf, PAGE_SIZE, enabled ? "enabled\n" : "disabled\n");
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2008-11-07 22:05:41 +00:00
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}
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2010-05-13 01:28:57 +00:00
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static ssize_t edid_show(struct file *filp, struct kobject *kobj,
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struct bin_attribute *attr, char *buf, loff_t off,
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size_t count)
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2008-11-07 22:05:41 +00:00
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{
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2016-01-13 14:48:41 +00:00
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struct device *connector_dev = kobj_to_dev(kobj);
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2008-11-07 22:05:41 +00:00
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struct drm_connector *connector = to_drm_connector(connector_dev);
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unsigned char *edid;
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size_t size;
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2015-10-02 11:01:02 +00:00
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ssize_t ret = 0;
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2008-11-07 22:05:41 +00:00
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2015-10-02 11:01:02 +00:00
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mutex_lock(&connector->dev->mode_config.mutex);
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2008-11-07 22:05:41 +00:00
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if (!connector->edid_blob_ptr)
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2015-10-02 11:01:02 +00:00
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goto unlock;
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2008-11-07 22:05:41 +00:00
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edid = connector->edid_blob_ptr->data;
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size = connector->edid_blob_ptr->length;
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if (!edid)
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2015-10-02 11:01:02 +00:00
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goto unlock;
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2008-11-07 22:05:41 +00:00
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if (off >= size)
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2015-10-02 11:01:02 +00:00
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goto unlock;
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2008-11-07 22:05:41 +00:00
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if (off + count > size)
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count = size - off;
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memcpy(buf, edid + off, count);
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2015-10-02 11:01:02 +00:00
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ret = count;
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unlock:
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mutex_unlock(&connector->dev->mode_config.mutex);
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return ret;
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2008-11-07 22:05:41 +00:00
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}
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static ssize_t modes_show(struct device *device,
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struct device_attribute *attr,
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char *buf)
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{
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struct drm_connector *connector = to_drm_connector(device);
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struct drm_display_mode *mode;
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int written = 0;
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2015-10-02 11:01:02 +00:00
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mutex_lock(&connector->dev->mode_config.mutex);
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2008-11-07 22:05:41 +00:00
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list_for_each_entry(mode, &connector->modes, head) {
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2020-03-11 07:35:40 +00:00
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written += scnprintf(buf + written, PAGE_SIZE - written, "%s\n",
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2008-11-07 22:05:41 +00:00
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mode->name);
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}
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2015-10-02 11:01:02 +00:00
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mutex_unlock(&connector->dev->mode_config.mutex);
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2008-11-07 22:05:41 +00:00
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return written;
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}
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|
2015-03-06 12:36:42 +00:00
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static DEVICE_ATTR_RW(status);
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2015-02-04 10:58:53 +00:00
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static DEVICE_ATTR_RO(enabled);
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static DEVICE_ATTR_RO(dpms);
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static DEVICE_ATTR_RO(modes);
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static struct attribute *connector_dev_attrs[] = {
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&dev_attr_status.attr,
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&dev_attr_enabled.attr,
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&dev_attr_dpms.attr,
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&dev_attr_modes.attr,
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NULL
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2008-11-07 22:05:41 +00:00
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};
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static struct bin_attribute edid_attr = {
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.attr.name = "edid",
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2009-05-31 03:42:26 +00:00
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.attr.mode = 0444,
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2010-03-29 21:43:23 +00:00
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.size = 0,
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2008-11-07 22:05:41 +00:00
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.read = edid_show,
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};
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2015-02-04 10:58:53 +00:00
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static struct bin_attribute *connector_bin_attrs[] = {
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&edid_attr,
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NULL
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};
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static const struct attribute_group connector_dev_group = {
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.attrs = connector_dev_attrs,
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.bin_attrs = connector_bin_attrs,
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};
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static const struct attribute_group *connector_dev_groups[] = {
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&connector_dev_group,
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NULL
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};
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2008-11-07 22:05:41 +00:00
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|
|
int drm_sysfs_connector_add(struct drm_connector *connector)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
|
2013-10-11 04:07:25 +00:00
|
|
|
if (connector->kdev)
|
|
|
|
return 0;
|
2008-11-07 22:05:41 +00:00
|
|
|
|
2015-02-04 10:58:53 +00:00
|
|
|
connector->kdev =
|
|
|
|
device_create_with_groups(drm_class, dev->primary->kdev, 0,
|
|
|
|
connector, connector_dev_groups,
|
|
|
|
"card%d-%s", dev->primary->index,
|
|
|
|
connector->name);
|
2008-11-07 22:05:41 +00:00
|
|
|
DRM_DEBUG("adding \"%s\" to sysfs\n",
|
2014-06-03 11:56:20 +00:00
|
|
|
connector->name);
|
2008-11-07 22:05:41 +00:00
|
|
|
|
2013-10-11 04:07:25 +00:00
|
|
|
if (IS_ERR(connector->kdev)) {
|
|
|
|
DRM_ERROR("failed to register connector device: %ld\n", PTR_ERR(connector->kdev));
|
2015-02-04 10:58:53 +00:00
|
|
|
return PTR_ERR(connector->kdev);
|
2008-11-07 22:05:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Let userspace know we have a new connector */
|
|
|
|
drm_sysfs_hotplug_event(dev);
|
|
|
|
|
2019-07-26 17:22:55 +00:00
|
|
|
if (connector->ddc)
|
|
|
|
return sysfs_create_link(&connector->kdev->kobj,
|
|
|
|
&connector->ddc->dev.kobj, "ddc");
|
2008-11-07 22:05:41 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void drm_sysfs_connector_remove(struct drm_connector *connector)
|
|
|
|
{
|
2013-10-11 04:07:25 +00:00
|
|
|
if (!connector->kdev)
|
2012-02-20 14:15:02 +00:00
|
|
|
return;
|
2019-07-26 17:22:55 +00:00
|
|
|
|
|
|
|
if (connector->ddc)
|
|
|
|
sysfs_remove_link(&connector->kdev->kobj, "ddc");
|
|
|
|
|
2008-11-07 22:05:41 +00:00
|
|
|
DRM_DEBUG("removing \"%s\" from sysfs\n",
|
2014-06-03 11:56:20 +00:00
|
|
|
connector->name);
|
2008-11-07 22:05:41 +00:00
|
|
|
|
2013-10-11 04:07:25 +00:00
|
|
|
device_unregister(connector->kdev);
|
|
|
|
connector->kdev = NULL;
|
2008-11-07 22:05:41 +00:00
|
|
|
}
|
|
|
|
|
2018-11-29 09:42:26 +00:00
|
|
|
void drm_sysfs_lease_event(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
char *event_string = "LEASE=1";
|
|
|
|
char *envp[] = { event_string, NULL };
|
|
|
|
|
|
|
|
DRM_DEBUG("generating lease event\n");
|
|
|
|
|
|
|
|
kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp);
|
|
|
|
}
|
|
|
|
|
2008-11-07 22:05:41 +00:00
|
|
|
/**
|
|
|
|
* drm_sysfs_hotplug_event - generate a DRM uevent
|
|
|
|
* @dev: DRM device
|
|
|
|
*
|
|
|
|
* Send a uevent for the DRM device specified by @dev. Currently we only
|
|
|
|
* set HOTPLUG=1 in the uevent environment, but this could be expanded to
|
|
|
|
* deal with other types of events.
|
2019-08-01 11:41:16 +00:00
|
|
|
*
|
|
|
|
* Any new uapi should be using the drm_sysfs_connector_status_event()
|
|
|
|
* for uevents on connector status change.
|
2008-11-07 22:05:41 +00:00
|
|
|
*/
|
|
|
|
void drm_sysfs_hotplug_event(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
char *event_string = "HOTPLUG=1";
|
|
|
|
char *envp[] = { event_string, NULL };
|
|
|
|
|
|
|
|
DRM_DEBUG("generating hotplug event\n");
|
|
|
|
|
2013-10-11 04:07:25 +00:00
|
|
|
kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp);
|
2008-11-07 22:05:41 +00:00
|
|
|
}
|
2009-03-31 21:11:15 +00:00
|
|
|
EXPORT_SYMBOL(drm_sysfs_hotplug_event);
|
2008-11-07 22:05:41 +00:00
|
|
|
|
2019-08-01 11:41:16 +00:00
|
|
|
/**
|
|
|
|
* drm_sysfs_connector_status_event - generate a DRM uevent for connector
|
|
|
|
* property status change
|
|
|
|
* @connector: connector on which property status changed
|
|
|
|
* @property: connector property whose status changed.
|
|
|
|
*
|
|
|
|
* Send a uevent for the DRM device specified by @dev. Currently we
|
|
|
|
* set HOTPLUG=1 and connector id along with the attached property id
|
|
|
|
* related to the status change.
|
|
|
|
*/
|
|
|
|
void drm_sysfs_connector_status_event(struct drm_connector *connector,
|
|
|
|
struct drm_property *property)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
char hotplug_str[] = "HOTPLUG=1", conn_id[21], prop_id[21];
|
|
|
|
char *envp[4] = { hotplug_str, conn_id, prop_id, NULL };
|
|
|
|
|
|
|
|
WARN_ON(!drm_mode_obj_find_prop_id(&connector->base,
|
|
|
|
property->base.id));
|
|
|
|
|
|
|
|
snprintf(conn_id, ARRAY_SIZE(conn_id),
|
|
|
|
"CONNECTOR=%u", connector->base.id);
|
|
|
|
snprintf(prop_id, ARRAY_SIZE(prop_id),
|
|
|
|
"PROPERTY=%u", property->base.id);
|
|
|
|
|
|
|
|
DRM_DEBUG("generating connector status event\n");
|
|
|
|
|
|
|
|
kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_sysfs_connector_status_event);
|
|
|
|
|
2013-11-21 10:50:50 +00:00
|
|
|
static void drm_sysfs_release(struct device *dev)
|
|
|
|
{
|
|
|
|
kfree(dev);
|
|
|
|
}
|
|
|
|
|
2014-07-23 09:38:38 +00:00
|
|
|
struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2014-07-23 09:38:38 +00:00
|
|
|
const char *minor_str;
|
|
|
|
struct device *kdev;
|
2013-11-21 10:50:50 +00:00
|
|
|
int r;
|
2007-11-22 04:02:38 +00:00
|
|
|
|
2018-04-20 06:51:59 +00:00
|
|
|
if (minor->type == DRM_MINOR_RENDER)
|
2014-07-23 09:38:38 +00:00
|
|
|
minor_str = "renderD%d";
|
|
|
|
else
|
|
|
|
minor_str = "card%d";
|
|
|
|
|
|
|
|
kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
|
|
|
|
if (!kdev)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
device_initialize(kdev);
|
|
|
|
kdev->devt = MKDEV(DRM_MAJOR, minor->index);
|
|
|
|
kdev->class = drm_class;
|
|
|
|
kdev->type = &drm_sysfs_device_minor;
|
|
|
|
kdev->parent = minor->dev->dev;
|
|
|
|
kdev->release = drm_sysfs_release;
|
|
|
|
dev_set_drvdata(kdev, minor);
|
|
|
|
|
|
|
|
r = dev_set_name(kdev, minor_str, minor->index);
|
2013-11-21 10:50:50 +00:00
|
|
|
if (r < 0)
|
2014-07-23 09:38:38 +00:00
|
|
|
goto err_free;
|
2013-11-21 10:50:50 +00:00
|
|
|
|
2014-07-23 09:38:38 +00:00
|
|
|
return kdev;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2014-07-23 09:38:38 +00:00
|
|
|
err_free:
|
|
|
|
put_device(kdev);
|
|
|
|
return ERR_PTR(r);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2009-08-17 14:28:37 +00:00
|
|
|
|
|
|
|
/**
|
2017-04-04 09:52:55 +00:00
|
|
|
* drm_class_device_register - register new device with the DRM sysfs class
|
|
|
|
* @dev: device to register
|
2009-08-17 14:28:37 +00:00
|
|
|
*
|
2017-04-04 09:52:55 +00:00
|
|
|
* Registers a new &struct device within the DRM sysfs class. Essentially only
|
|
|
|
* used by ttm to have a place for its global settings. Drivers should never use
|
|
|
|
* this.
|
2009-08-17 14:28:37 +00:00
|
|
|
*/
|
|
|
|
int drm_class_device_register(struct device *dev)
|
|
|
|
{
|
2012-07-06 17:06:42 +00:00
|
|
|
if (!drm_class || IS_ERR(drm_class))
|
|
|
|
return -ENOENT;
|
|
|
|
|
2009-08-17 14:28:37 +00:00
|
|
|
dev->class = drm_class;
|
|
|
|
return device_register(dev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_class_device_register);
|
|
|
|
|
2017-04-04 09:52:55 +00:00
|
|
|
/**
|
|
|
|
* drm_class_device_unregister - unregister device with the DRM sysfs class
|
|
|
|
* @dev: device to unregister
|
|
|
|
*
|
|
|
|
* Unregisters a &struct device from the DRM sysfs class. Essentially only used
|
|
|
|
* by ttm to have a place for its global settings. Drivers should never use
|
|
|
|
* this.
|
|
|
|
*/
|
2009-08-17 14:28:37 +00:00
|
|
|
void drm_class_device_unregister(struct device *dev)
|
|
|
|
{
|
|
|
|
return device_unregister(dev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_class_device_unregister);
|