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authorThomas Hellstrom <thellstrom@vmware.com>2009-08-17 16:28:37 +0200
committerDave Airlie <airlied@linux.ie>2009-08-19 16:08:51 +1000
commit327c225bd548bf7871f116a0baa5ebdac884e452 (patch)
treea97343597d446324d37874d148e1e29c3ec7e17c
parenta0724fcf829e5afb66159ef68cb16a805ea11b42 (diff)
drm: Enable drm drivers to add drm sysfs devices.
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>
-rw-r--r--drivers/gpu/drm/drm_sysfs.c25
-rw-r--r--include/drm/drm_sysfs.h12
2 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index adc179459c2..de154556c40 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -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);
diff --git a/include/drm/drm_sysfs.h b/include/drm/drm_sysfs.h
new file mode 100644
index 00000000000..1d8e033fde6
--- /dev/null
+++ b/include/drm/drm_sysfs.h
@@ -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