fishHEADmaster

1 files changed, 3902 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
new file mode 100644
index 0000000..8759d69
--- /dev/null
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -0,0 +1,3902 @@
+/*
+ * Copyright (c) 2006-2008 Intel Corporation
+ * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (c) 2008 Red Hat Inc.
+ *
+ * DRM core CRTC related functions
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ *
+ * Authors:
+ *      Keith Packard
+ *	Eric Anholt <eric@anholt.net>
+ *      Dave Airlie <airlied@linux.ie>
+ *      Jesse Barnes <jesse.barnes@intel.com>
+ */
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_fourcc.h>
+
+/**
+ * drm_modeset_lock_all - take all modeset locks
+ * @dev: drm device
+ *
+ * This function takes all modeset locks, suitable where a more fine-grained
+ * scheme isn't (yet) implemented.
+ */
+void drm_modeset_lock_all(struct drm_device *dev)
+{
+	struct drm_crtc *crtc;
+
+	mutex_lock(&dev->mode_config.mutex);
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+		mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
+}
+EXPORT_SYMBOL(drm_modeset_lock_all);
+
+/**
+ * drm_modeset_unlock_all - drop all modeset locks
+ * @dev: device
+ */
+void drm_modeset_unlock_all(struct drm_device *dev)
+{
+	struct drm_crtc *crtc;
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+		mutex_unlock(&crtc->mutex);
+
+	mutex_unlock(&dev->mode_config.mutex);
+}
+EXPORT_SYMBOL(drm_modeset_unlock_all);
+
+/**
+ * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
+ * @dev: device
+ */
+void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
+{
+	struct drm_crtc *crtc;
+
+	/* Locking is currently fubar in the panic handler. */
+	if (oops_in_progress)
+		return;
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+		WARN_ON(!mutex_is_locked(&crtc->mutex));
+
+	WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
+}
+EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
+
+/* Avoid boilerplate.  I'm tired of typing. */
+#define DRM_ENUM_NAME_FN(fnname, list)				\
+	char *fnname(int val)					\
+	{							\
+		int i;						\
+		for (i = 0; i < ARRAY_SIZE(list); i++) {	\
+			if (list[i].type == val)		\
+				return list[i].name;		\
+		}						\
+		return "(unknown)";				\
+	}
+
+/*
+ * Global properties
+ */
+static struct drm_prop_enum_list drm_dpms_enum_list[] =
+{	{ DRM_MODE_DPMS_ON, "On" },
+	{ DRM_MODE_DPMS_STANDBY, "Standby" },
+	{ DRM_MODE_DPMS_SUSPEND, "Suspend" },
+	{ DRM_MODE_DPMS_OFF, "Off" }
+};
+
+DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
+
+/*
+ * Optional properties
+ */
+static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
+{
+	{ DRM_MODE_SCALE_NONE, "None" },
+	{ DRM_MODE_SCALE_FULLSCREEN, "Full" },
+	{ DRM_MODE_SCALE_CENTER, "Center" },
+	{ DRM_MODE_SCALE_ASPECT, "Full aspect" },
+};
+
+static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
+{
+	{ DRM_MODE_DITHERING_OFF, "Off" },
+	{ DRM_MODE_DITHERING_ON, "On" },
+	{ DRM_MODE_DITHERING_AUTO, "Automatic" },
+};
+
+/*
+ * Non-global properties, but "required" for certain connectors.
+ */
+static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
+{
+	{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
+	{ DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
+	{ DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
+};
+
+DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
+
+static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
+{
+	{ DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
+	{ DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
+	{ DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
+};
+
+DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
+		 drm_dvi_i_subconnector_enum_list)
+
+static struct drm_prop_enum_list drm_tv_select_enum_list[] =
+{
+	{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
+	{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
+	{ DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
+	{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
+	{ DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
+};
+
+DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
+
+static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
+{
+	{ DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
+	{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
+	{ DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
+	{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
+	{ DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
+};
+
+DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
+		 drm_tv_subconnector_enum_list)
+
+static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
+	{ DRM_MODE_DIRTY_OFF,      "Off"      },
+	{ DRM_MODE_DIRTY_ON,       "On"       },
+	{ DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
+};
+
+struct drm_conn_prop_enum_list {
+	int type;
+	char *name;
+	int count;
+};
+
+/*
+ * Connector and encoder types.
+ */
+static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
+{	{ DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
+	{ DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
+	{ DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
+	{ DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
+	{ DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
+	{ DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
+	{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
+	{ DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
+	{ DRM_MODE_CONNECTOR_Component, "Component", 0 },
+	{ DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
+	{ DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
+	{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
+	{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
+	{ DRM_MODE_CONNECTOR_TV, "TV", 0 },
+	{ DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
+	{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
+};
+
+static struct drm_prop_enum_list drm_encoder_enum_list[] =
+{	{ DRM_MODE_ENCODER_NONE, "None" },
+	{ DRM_MODE_ENCODER_DAC, "DAC" },
+	{ DRM_MODE_ENCODER_TMDS, "TMDS" },
+	{ DRM_MODE_ENCODER_LVDS, "LVDS" },
+	{ DRM_MODE_ENCODER_TVDAC, "TV" },
+	{ DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
+};
+
+char *drm_get_encoder_name(struct drm_encoder *encoder)
+{
+	static char buf[32];
+
+	snprintf(buf, 32, "%s-%d",
+		 drm_encoder_enum_list[encoder->encoder_type].name,
+		 encoder->base.id);
+	return buf;
+}
+EXPORT_SYMBOL(drm_get_encoder_name);
+
+char *drm_get_connector_name(struct drm_connector *connector)
+{
+	static char buf[32];
+
+	snprintf(buf, 32, "%s-%d",
+		 drm_connector_enum_list[connector->connector_type].name,
+		 connector->connector_type_id);
+	return buf;
+}
+EXPORT_SYMBOL(drm_get_connector_name);
+
+char *drm_get_connector_status_name(enum drm_connector_status status)
+{
+	if (status == connector_status_connected)
+		return "connected";
+	else if (status == connector_status_disconnected)
+		return "disconnected";
+	else
+		return "unknown";
+}
+EXPORT_SYMBOL(drm_get_connector_status_name);
+
+/**
+ * drm_mode_object_get - allocate a new modeset identifier
+ * @dev: DRM device
+ * @obj: object pointer, used to generate unique ID
+ * @obj_type: object type
+ *
+ * Create a unique identifier based on @ptr in @dev's identifier space.  Used
+ * for tracking modes, CRTCs and connectors.
+ *
+ * RETURNS:
+ * New unique (relative to other objects in @dev) integer identifier for the
+ * object.
+ */
+static int drm_mode_object_get(struct drm_device *dev,
+			       struct drm_mode_object *obj, uint32_t obj_type)
+{
+	int ret;
+
+	mutex_lock(&dev->mode_config.idr_mutex);
+	ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
+	if (ret >= 0) {
+		/*
+		 * Set up the object linking under the protection of the idr
+		 * lock so that other users can't see inconsistent state.
+		 */
+		obj->id = ret;
+		obj->type = obj_type;
+	}
+	mutex_unlock(&dev->mode_config.idr_mutex);
+
+	return ret < 0 ? ret : 0;
+}
+
+/**
+ * drm_mode_object_put - free a modeset identifer
+ * @dev: DRM device
+ * @object: object to free
+ *
+ * Free @id from @dev's unique identifier pool.
+ */
+static void drm_mode_object_put(struct drm_device *dev,
+				struct drm_mode_object *object)
+{
+	mutex_lock(&dev->mode_config.idr_mutex);
+	idr_remove(&dev->mode_config.crtc_idr, object->id);
+	mutex_unlock(&dev->mode_config.idr_mutex);
+}
+
+/**
+ * drm_mode_object_find - look up a drm object with static lifetime
+ * @dev: drm device
+ * @id: id of the mode object
+ * @type: type of the mode object
+ *
+ * Note that framebuffers cannot be looked up with this functions - since those
+ * are reference counted, they need special treatment.
+ */
+struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
+		uint32_t id, uint32_t type)
+{
+	struct drm_mode_object *obj = NULL;
+
+	/* Framebuffers are reference counted and need their own lookup
+	 * function.*/
+	WARN_ON(type == DRM_MODE_OBJECT_FB);
+
+	mutex_lock(&dev->mode_config.idr_mutex);
+	obj = idr_find(&dev->mode_config.crtc_idr, id);
+	if (!obj || (obj->type != type) || (obj->id != id))
+		obj = NULL;
+	mutex_unlock(&dev->mode_config.idr_mutex);
+
+	return obj;
+}
+EXPORT_SYMBOL(drm_mode_object_find);
+
+/**
+ * drm_framebuffer_init - initialize a framebuffer
+ * @dev: DRM device
+ * @fb: framebuffer to be initialized
+ * @funcs: ... with these functions
+ *
+ * Allocates an ID for the framebuffer's parent mode object, sets its mode
+ * functions & device file and adds it to the master fd list.
+ *
+ * IMPORTANT:
+ * This functions publishes the fb and makes it available for concurrent access
+ * by other users. Which means by this point the fb _must_ be fully set up -
+ * since all the fb attributes are invariant over its lifetime, no further
+ * locking but only correct reference counting is required.
+ *
+ * RETURNS:
+ * Zero on success, error code on failure.
+ */
+int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
+			 const struct drm_framebuffer_funcs *funcs)
+{
+	int ret;
+
+	mutex_lock(&dev->mode_config.fb_lock);
+	kref_init(&fb->refcount);
+	INIT_LIST_HEAD(&fb->filp_head);
+	fb->dev = dev;
+	fb->funcs = funcs;
+
+	ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
+	if (ret)
+		goto out;
+
+	/* Grab the idr reference. */
+	drm_framebuffer_reference(fb);
+
+	dev->mode_config.num_fb++;
+	list_add(&fb->head, &dev->mode_config.fb_list);
+out:
+	mutex_unlock(&dev->mode_config.fb_lock);
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_framebuffer_init);
+
+static void drm_framebuffer_free(struct kref *kref)
+{
+	struct drm_framebuffer *fb =
+			container_of(kref, struct drm_framebuffer, refcount);
+	fb->funcs->destroy(fb);
+}
+
+static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
+							uint32_t id)
+{
+	struct drm_mode_object *obj = NULL;
+	struct drm_framebuffer *fb;
+
+	mutex_lock(&dev->mode_config.idr_mutex);
+	obj = idr_find(&dev->mode_config.crtc_idr, id);
+	if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
+		fb = NULL;
+	else
+		fb = obj_to_fb(obj);
+	mutex_unlock(&dev->mode_config.idr_mutex);
+
+	return fb;
+}
+
+/**
+ * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
+ * @dev: drm device
+ * @id: id of the fb object
+ *
+ * If successful, this grabs an additional reference to the framebuffer -
+ * callers need to make sure to eventually unreference the returned framebuffer
+ * again.
+ */
+struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
+					       uint32_t id)
+{
+	struct drm_framebuffer *fb;
+
+	mutex_lock(&dev->mode_config.fb_lock);
+	fb = __drm_framebuffer_lookup(dev, id);
+	if (fb)
+		drm_framebuffer_reference(fb);
+	mutex_unlock(&dev->mode_config.fb_lock);
+
+	return fb;
+}
+EXPORT_SYMBOL(drm_framebuffer_lookup);
+
+/**
+ * drm_framebuffer_unreference - unref a framebuffer
+ * @fb: framebuffer to unref
+ *
+ * This functions decrements the fb's refcount and frees it if it drops to zero.
+ */
+void drm_framebuffer_unreference(struct drm_framebuffer *fb)
+{
+	DRM_DEBUG("FB ID: %d\n", fb->base.id);
+	kref_put(&fb->refcount, drm_framebuffer_free);
+}
+EXPORT_SYMBOL(drm_framebuffer_unreference);
+
+/**
+ * drm_framebuffer_reference - incr the fb refcnt
+ * @fb: framebuffer
+ */
+void drm_framebuffer_reference(struct drm_framebuffer *fb)
+{
+	DRM_DEBUG("FB ID: %d\n", fb->base.id);
+	kref_get(&fb->refcount);
+}
+EXPORT_SYMBOL(drm_framebuffer_reference);
+
+static void drm_framebuffer_free_bug(struct kref *kref)
+{
+	BUG();
+}
+
+static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
+{
+	DRM_DEBUG("FB ID: %d\n", fb->base.id);
+	kref_put(&fb->refcount, drm_framebuffer_free_bug);
+}
+
+/* dev->mode_config.fb_lock must be held! */
+static void __drm_framebuffer_unregister(struct drm_device *dev,
+					 struct drm_framebuffer *fb)
+{
+	mutex_lock(&dev->mode_config.idr_mutex);
+	idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
+	mutex_unlock(&dev->mode_config.idr_mutex);
+
+	fb->base.id = 0;
+
+	__drm_framebuffer_unreference(fb);
+}
+
+/**
+ * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
+ * @fb: fb to unregister
+ *
+ * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
+ * those used for fbdev. Note that the caller must hold a reference of it's own,
+ * i.e. the object may not be destroyed through this call (since it'll lead to a
+ * locking inversion).
+ */
+void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
+{
+	struct drm_device *dev = fb->dev;
+
+	mutex_lock(&dev->mode_config.fb_lock);
+	/* Mark fb as reaped and drop idr ref. */
+	__drm_framebuffer_unregister(dev, fb);
+	mutex_unlock(&dev->mode_config.fb_lock);
+}
+EXPORT_SYMBOL(drm_framebuffer_unregister_private);
+
+/**
+ * drm_framebuffer_cleanup - remove a framebuffer object
+ * @fb: framebuffer to remove
+ *
+ * Cleanup references to a user-created framebuffer. This function is intended
+ * to be used from the drivers ->destroy callback.
+ *
+ * Note that this function does not remove the fb from active usuage - if it is
+ * still used anywhere, hilarity can ensue since userspace could call getfb on
+ * the id and get back -EINVAL. Obviously no concern at driver unload time.
+ *
+ * Also, the framebuffer will not be removed from the lookup idr - for
+ * user-created framebuffers this will happen in in the rmfb ioctl. For
+ * driver-private objects (e.g. for fbdev) drivers need to explicitly call
+ * drm_framebuffer_unregister_private.
+ */
+void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
+{
+	struct drm_device *dev = fb->dev;
+
+	mutex_lock(&dev->mode_config.fb_lock);
+	list_del(&fb->head);
+	dev->mode_config.num_fb--;
+	mutex_unlock(&dev->mode_config.fb_lock);
+}
+EXPORT_SYMBOL(drm_framebuffer_cleanup);
+
+/**
+ * drm_framebuffer_remove - remove and unreference a framebuffer object
+ * @fb: framebuffer to remove
+ *
+ * Scans all the CRTCs and planes in @dev's mode_config.  If they're
+ * using @fb, removes it, setting it to NULL. Then drops the reference to the
+ * passed-in framebuffer. Might take the modeset locks.
+ *
+ * Note that this function optimizes the cleanup away if the caller holds the
+ * last reference to the framebuffer. It is also guaranteed to not take the
+ * modeset locks in this case.
+ */
+void drm_framebuffer_remove(struct drm_framebuffer *fb)
+{
+	struct drm_device *dev = fb->dev;
+	struct drm_crtc *crtc;
+	struct drm_plane *plane;
+	struct drm_mode_set set;
+	int ret;
+
+	WARN_ON(!list_empty(&fb->filp_head));
+
+	/*
+	 * drm ABI mandates that we remove any deleted framebuffers from active
+	 * useage. But since most sane clients only remove framebuffers they no
+	 * longer need, try to optimize this away.
+	 *
+	 * Since we're holding a reference ourselves, observing a refcount of 1
+	 * means that we're the last holder and can skip it. Also, the refcount
+	 * can never increase from 1 again, so we don't need any barriers or
+	 * locks.
+	 *
+	 * Note that userspace could try to race with use and instate a new
+	 * usage _after_ we've cleared all current ones. End result will be an
+	 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
+	 * in this manner.
+	 */
+	if (atomic_read(&fb->refcount.refcount) > 1) {
+		drm_modeset_lock_all(dev);
+		/* remove from any CRTC */
+		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+			if (crtc->fb == fb) {
+				/* should turn off the crtc */
+				memset(&set, 0, sizeof(struct drm_mode_set));
+				set.crtc = crtc;
+				set.fb = NULL;
+				ret = drm_mode_set_config_internal(&set);
+				if (ret)
+					DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
+			}
+		}
+
+		list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
+			if (plane->fb == fb) {
+				/* should turn off the crtc */
+				ret = plane->funcs->disable_plane(plane);
+				if (ret)
+					DRM_ERROR("failed to disable plane with busy fb\n");
+				/* disconnect the plane from the fb and crtc: */
+				__drm_framebuffer_unreference(plane->fb);
+				plane->fb = NULL;
+				plane->crtc = NULL;
+			}
+		}
+		drm_modeset_unlock_all(dev);
+	}
+
+	drm_framebuffer_unreference(fb);
+}
+EXPORT_SYMBOL(drm_framebuffer_remove);
+
+/**
+ * drm_crtc_init - Initialise a new CRTC object
+ * @dev: DRM device
+ * @crtc: CRTC object to init
+ * @funcs: callbacks for the new CRTC
+ *
+ * Inits a new object created as base part of an driver crtc object.
+ *
+ * RETURNS:
+ * Zero on success, error code on failure.
+ */
+int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
+		   const struct drm_crtc_funcs *funcs)
+{
+	int ret;
+
+	crtc->dev = dev;
+	crtc->funcs = funcs;
+	crtc->invert_dimensions = false;
+
+	drm_modeset_lock_all(dev);
+	mutex_init(&crtc->mutex);
+	mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
+
+	ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
+	if (ret)
+		goto out;
+
+	crtc->base.properties = &crtc->properties;
+
+	list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
+	dev->mode_config.num_crtc++;
+
+ out:
+	drm_modeset_unlock_all(dev);
+
+	return ret;
+}
+EXPORT_SYMBOL(drm_crtc_init);
+
+/**
+ * drm_crtc_cleanup - Cleans up the core crtc usage.
+ * @crtc: CRTC to cleanup
+ *
+ * Cleanup @crtc. Removes from drm modesetting space
+ * does NOT free object, caller does that.
+ */
+void drm_crtc_cleanup(struct drm_crtc *crtc)
+{
+	struct drm_device *dev = crtc->dev;
+
+	kfree(crtc->gamma_store);
+	crtc->gamma_store = NULL;
+
+	drm_mode_object_put(dev, &crtc->base);
+	list_del(&crtc->head);
+	dev->mode_config.num_crtc--;
+}
+EXPORT_SYMBOL(drm_crtc_cleanup);
+
+/**
+ * drm_mode_probed_add - add a mode to a connector's probed mode list
+ * @connector: connector the new mode
+ * @mode: mode data
+ *
+ * Add @mode to @connector's mode list for later use.
+ */
+void drm_mode_probed_add(struct drm_connector *connector,
+			 struct drm_display_mode *mode)
+{
+	list_add(&mode->head, &connector->probed_modes);
+}
+EXPORT_SYMBOL(drm_mode_probed_add);
+
+/**
+ * drm_mode_remove - remove and free a mode
+ * @connector: connector list to modify
+ * @mode: mode to remove
+ *
+ * Remove @mode from @connector's mode list, then free it.
+ */
+void drm_mode_remove(struct drm_connector *connector,
+		     struct drm_display_mode *mode)
+{
+	list_del(&mode->head);
+	drm_mode_destroy(connector->dev, mode);
+}
+EXPORT_SYMBOL(drm_mode_remove);
+
+/**
+ * drm_connector_init - Init a preallocated connector
+ * @dev: DRM device
+ * @connector: the connector to init
+ * @funcs: callbacks for this connector
+ * @connector_type: user visible type of the connector
+ *
+ * Initialises a preallocated connector. Connectors should be
+ * subclassed as part of driver connector objects.
+ *
+ * RETURNS:
+ * Zero on success, error code on failure.
+ */
+int drm_connector_init(struct drm_device *dev,
+		       struct drm_connector *connector,
+		       const struct drm_connector_funcs *funcs,
+		       int connector_type)
+{
+	int ret;
+
+	drm_modeset_lock_all(dev);
+
+	ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
+	if (ret)
+		goto out;
+
+	connector->base.properties = &connector->properties;
+	connector->dev = dev;
+	connector->funcs = funcs;
+	connector->connector_type = connector_type;
+	connector->connector_type_id =
+		++drm_connector_enum_list[connector_type].count; /* TODO */
+	INIT_LIST_HEAD(&connector->probed_modes);
+	INIT_LIST_HEAD(&connector->modes);
+	connector->edid_blob_ptr = NULL;
+	connector->status = connector_status_unknown;
+
+	list_add_tail(&connector->head, &dev->mode_config.connector_list);
+	dev->mode_config.num_connector++;
+
+	if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
+		drm_object_attach_property(&connector->base,
+					      dev->mode_config.edid_property,
+					      0);
+
+	drm_object_attach_property(&connector->base,
+				      dev->mode_config.dpms_property, 0);
+
+ out:
+	drm_modeset_unlock_all(dev);
+
+	return ret;
+}
+EXPORT_SYMBOL(drm_connector_init);
+
+/**
+ * drm_connector_cleanup - cleans up an initialised connector
+ * @connector: connector to cleanup
+ *
+ * Cleans up the connector but doesn't free the object.
+ */
+void drm_connector_cleanup(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_display_mode *mode, *t;
+
+	list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
+		drm_mode_remove(connector, mode);
+
+	list_for_each_entry_safe(mode, t, &connector->modes, head)
+		drm_mode_remove(connector, mode);
+
+	drm_mode_object_put(dev, &connector->base);
+	list_del(&connector->head);
+	dev->mode_config.num_connector--;
+}
+EXPORT_SYMBOL(drm_connector_cleanup);
+
+void drm_connector_unplug_all(struct drm_device *dev)
+{
+	struct drm_connector *connector;
+
+	/* taking the mode config mutex ends up in a clash with sysfs */
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+		drm_sysfs_connector_remove(connector);
+
+}
+EXPORT_SYMBOL(drm_connector_unplug_all);
+
+int drm_encoder_init(struct drm_device *dev,
+		      struct drm_encoder *encoder,
+		      const struct drm_encoder_funcs *funcs,
+		      int encoder_type)
+{
+	int ret;
+
+	drm_modeset_lock_all(dev);
+
+	ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
+	if (ret)
+		goto out;
+
+	encoder->dev = dev;
+	encoder->encoder_type = encoder_type;
+	encoder->funcs = funcs;
+
+	list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
+	dev->mode_config.num_encoder++;
+
+ out:
+	drm_modeset_unlock_all(dev);
+
+	return ret;
+}
+EXPORT_SYMBOL(drm_encoder_init);
+
+void drm_encoder_cleanup(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	drm_modeset_lock_all(dev);
+	drm_mode_object_put(dev, &encoder->base);
+	list_del(&encoder->head);
+	dev->mode_config.num_encoder--;
+	drm_modeset_unlock_all(dev);
+}
+EXPORT_SYMBOL(drm_encoder_cleanup);
+
+int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
+		   unsigned long possible_crtcs,
+		   const struct drm_plane_funcs *funcs,
+		   const uint32_t *formats, uint32_t format_count,
+		   bool priv)
+{
+	int ret;
+
+	drm_modeset_lock_all(dev);
+
+	ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
+	if (ret)
+		goto out;
+
+	plane->base.properties = &plane->properties;
+	plane->dev = dev;
+	plane->funcs = funcs;
+	plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
+				      GFP_KERNEL);
+	if (!plane->format_types) {
+		DRM_DEBUG_KMS("out of memory when allocating plane\n");
+		drm_mode_object_put(dev, &plane->base);
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
+	plane->format_count = format_count;
+	plane->possible_crtcs = possible_crtcs;
+
+	/* private planes are not exposed to userspace, but depending on
+	 * display hardware, might be convenient to allow sharing programming
+	 * for the scanout engine with the crtc implementation.
+	 */
+	if (!priv) {
+		list_add_tail(&plane->head, &dev->mode_config.plane_list);
+		dev->mode_config.num_plane++;
+	} else {
+		INIT_LIST_HEAD(&plane->head);
+	}
+
+ out:
+	drm_modeset_unlock_all(dev);
+
+	return ret;
+}
+EXPORT_SYMBOL(drm_plane_init);
+
+void drm_plane_cleanup(struct drm_plane *plane)
+{
+	struct drm_device *dev = plane->dev;
+
+	drm_modeset_lock_all(dev);
+	kfree(plane->format_types);
+	drm_mode_object_put(dev, &plane->base);
+	/* if not added to a list, it must be a private plane */
+	if (!list_empty(&plane->head)) {
+		list_del(&plane->head);
+		dev->mode_config.num_plane--;
+	}
+	drm_modeset_unlock_all(dev);
+}
+EXPORT_SYMBOL(drm_plane_cleanup);
+
+/**
+ * drm_mode_create - create a new display mode
+ * @dev: DRM device
+ *
+ * Create a new drm_display_mode, give it an ID, and return it.
+ *
+ * RETURNS:
+ * Pointer to new mode on success, NULL on error.
+ */
+struct drm_display_mode *drm_mode_create(struct drm_device *dev)
+{
+	struct drm_display_mode *nmode;
+
+	nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
+	if (!nmode)
+		return NULL;
+
+	if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
+		kfree(nmode);
+		return NULL;
+	}
+
+	return nmode;
+}
+EXPORT_SYMBOL(drm_mode_create);
+
+/**
+ * drm_mode_destroy - remove a mode
+ * @dev: DRM device
+ * @mode: mode to remove
+ *
+ * Free @mode's unique identifier, then free it.
+ */
+void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
+{
+	if (!mode)
+		return;
+
+	drm_mode_object_put(dev, &mode->base);
+
+	kfree(mode);
+}
+EXPORT_SYMBOL(drm_mode_destroy);
+
+static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
+{
+	struct drm_property *edid;
+	struct drm_property *dpms;
+
+	/*
+	 * Standard properties (apply to all connectors)
+	 */
+	edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
+				   DRM_MODE_PROP_IMMUTABLE,
+				   "EDID", 0);
+	dev->mode_config.edid_property = edid;
+
+	dpms = drm_property_create_enum(dev, 0,
+				   "DPMS", drm_dpms_enum_list,
+				   ARRAY_SIZE(drm_dpms_enum_list));
+	dev->mode_config.dpms_property = dpms;
+
+	return 0;
+}
+
+/**
+ * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
+ * @dev: DRM device
+ *
+ * Called by a driver the first time a DVI-I connector is made.
+ */
+int drm_mode_create_dvi_i_properties(struct drm_device *dev)
+{
+	struct drm_property *dvi_i_selector;
+	struct drm_property *dvi_i_subconnector;
+
+	if (dev->mode_config.dvi_i_select_subconnector_property)
+		return 0;
+
+	dvi_i_selector =
+		drm_property_create_enum(dev, 0,
+				    "select subconnector",
+				    drm_dvi_i_select_enum_list,
+				    ARRAY_SIZE(drm_dvi_i_select_enum_list));
+	dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
+
+	dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
+				    "subconnector",
+				    drm_dvi_i_subconnector_enum_list,
+				    ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
+	dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
+
+/**
+ * drm_create_tv_properties - create TV specific connector properties
+ * @dev: DRM device
+ * @num_modes: number of different TV formats (modes) supported
+ * @modes: array of pointers to strings containing name of each format
+ *
+ * Called by a driver's TV initialization routine, this function creates
+ * the TV specific connector properties for a given device.  Caller is
+ * responsible for allocating a list of format names and passing them to
+ * this routine.
+ */
+int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
+				  char *modes[])
+{
+	struct drm_property *tv_selector;
+	struct drm_property *tv_subconnector;
+	int i;
+
+	if (dev->mode_config.tv_select_subconnector_property)
+		return 0;
+
+	/*
+	 * Basic connector properties
+	 */
+	tv_selector = drm_property_create_enum(dev, 0,
+					  "select subconnector",
+					  drm_tv_select_enum_list,
+					  ARRAY_SIZE(drm_tv_select_enum_list));
+	dev->mode_config.tv_select_subconnector_property = tv_selector;
+
+	tv_subconnector =
+		drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
+				    "subconnector",
+				    drm_tv_subconnector_enum_list,
+				    ARRAY_SIZE(drm_tv_subconnector_enum_list));
+	dev->mode_config.tv_subconnector_property = tv_subconnector;
+
+	/*
+	 * Other, TV specific properties: margins & TV modes.
+	 */
+	dev->mode_config.tv_left_margin_property =
+		drm_property_create_range(dev, 0, "left margin", 0, 100);
+
+	dev->mode_config.tv_right_margin_property =
+		drm_property_create_range(dev, 0, "right margin", 0, 100);
+
+	dev->mode_config.tv_top_margin_property =
+		drm_property_create_range(dev, 0, "top margin", 0, 100);
+
+	dev->mode_config.tv_bottom_margin_property =
+		drm_property_create_range(dev, 0, "bottom margin", 0, 100);
+
+	dev->mode_config.tv_mode_property =
+		drm_property_create(dev, DRM_MODE_PROP_ENUM,
+				    "mode", num_modes);
+	for (i = 0; i < num_modes; i++)
+		drm_property_add_enum(dev->mode_config.tv_mode_property, i,
+				      i, modes[i]);
+
+	dev->mode_config.tv_brightness_property =
+		drm_property_create_range(dev, 0, "brightness", 0, 100);
+
+	dev->mode_config.tv_contrast_property =
+		drm_property_create_range(dev, 0, "contrast", 0, 100);
+
+	dev->mode_config.tv_flicker_reduction_property =
+		drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
+
+	dev->mode_config.tv_overscan_property =
+		drm_property_create_range(dev, 0, "overscan", 0, 100);
+
+	dev->mode_config.tv_saturation_property =
+		drm_property_create_range(dev, 0, "saturation", 0, 100);
+
+	dev->mode_config.tv_hue_property =
+		drm_property_create_range(dev, 0, "hue", 0, 100);
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_create_tv_properties);
+
+/**
+ * drm_mode_create_scaling_mode_property - create scaling mode property
+ * @dev: DRM device
+ *
+ * Called by a driver the first time it's needed, must be attached to desired
+ * connectors.
+ */
+int drm_mode_create_scaling_mode_property(struct drm_device *dev)
+{
+	struct drm_property *scaling_mode;
+
+	if (dev->mode_config.scaling_mode_property)
+		return 0;
+
+	scaling_mode =
+		drm_property_create_enum(dev, 0, "scaling mode",
+				drm_scaling_mode_enum_list,
+				    ARRAY_SIZE(drm_scaling_mode_enum_list));
+
+	dev->mode_config.scaling_mode_property = scaling_mode;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
+
+/**
+ * drm_mode_create_dithering_property - create dithering property
+ * @dev: DRM device
+ *
+ * Called by a driver the first time it's needed, must be attached to desired
+ * connectors.
+ */
+int drm_mode_create_dithering_property(struct drm_device *dev)
+{
+	struct drm_property *dithering_mode;
+
+	if (dev->mode_config.dithering_mode_property)
+		return 0;
+
+	dithering_mode =
+		drm_property_create_enum(dev, 0, "dithering",
+				drm_dithering_mode_enum_list,
+				    ARRAY_SIZE(drm_dithering_mode_enum_list));
+	dev->mode_config.dithering_mode_property = dithering_mode;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_create_dithering_property);
+
+/**
+ * drm_mode_create_dirty_property - create dirty property
+ * @dev: DRM device
+ *
+ * Called by a driver the first time it's needed, must be attached to desired
+ * connectors.
+ */
+int drm_mode_create_dirty_info_property(struct drm_device *dev)
+{
+	struct drm_property *dirty_info;
+
+	if (dev->mode_config.dirty_info_property)
+		return 0;
+
+	dirty_info =
+		drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
+				    "dirty",
+				    drm_dirty_info_enum_list,
+				    ARRAY_SIZE(drm_dirty_info_enum_list));
+	dev->mode_config.dirty_info_property = dirty_info;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
+
+static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
+{
+	uint32_t total_objects = 0;
+
+	total_objects += dev->mode_config.num_crtc;
+	total_objects += dev->mode_config.num_connector;
+	total_objects += dev->mode_config.num_encoder;
+
+	group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
+	if (!group->id_list)
+		return -ENOMEM;
+
+	group->num_crtcs = 0;
+	group->num_connectors = 0;
+	group->num_encoders = 0;
+	return 0;
+}
+
+int drm_mode_group_init_legacy_group(struct drm_device *dev,
+				     struct drm_mode_group *group)
+{
+	struct drm_crtc *crtc;
+	struct drm_encoder *encoder;
+	struct drm_connector *connector;
+	int ret;
+
+	if ((ret = drm_mode_group_init(dev, group)))
+		return ret;
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+		group->id_list[group->num_crtcs++] = crtc->base.id;
+
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
+		group->id_list[group->num_crtcs + group->num_encoders++] =
+		encoder->base.id;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+		group->id_list[group->num_crtcs + group->num_encoders +
+			       group->num_connectors++] = connector->base.id;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
+
+/**
+ * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
+ * @out: drm_mode_modeinfo struct to return to the user
+ * @in: drm_display_mode to use
+ *
+ * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
+ * the user.
+ */
+static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
+				      const struct drm_display_mode *in)
+{
+	WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
+	     in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
+	     in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
+	     in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
+	     in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
+	     "timing values too large for mode info\n");
+
+	out->clock = in->clock;
+	out->hdisplay = in->hdisplay;
+	out->hsync_start = in->hsync_start;
+	out->hsync_end = in->hsync_end;
+	out->htotal = in->htotal;
+	out->hskew = in->hskew;
+	out->vdisplay = in->vdisplay;
+	out->vsync_start = in->vsync_start;
+	out->vsync_end = in->vsync_end;
+	out->vtotal = in->vtotal;
+	out->vscan = in->vscan;
+	out->vrefresh = in->vrefresh;
+	out->flags = in->flags;
+	out->type = in->type;
+	strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
+	out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
+}
+
+/**
+ * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
+ * @out: drm_display_mode to return to the user
+ * @in: drm_mode_modeinfo to use
+ *
+ * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
+ * the caller.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+static int drm_crtc_convert_umode(struct drm_display_mode *out,
+				  const struct drm_mode_modeinfo *in)
+{
+	if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
+		return -ERANGE;
+
+	out->clock = in->clock;
+	out->hdisplay = in->hdisplay;
+	out->hsync_start = in->hsync_start;
+	out->hsync_end = in->hsync_end;
+	out->htotal = in->htotal;
+	out->hskew = in->hskew;
+	out->vdisplay = in->vdisplay;
+	out->vsync_start = in->vsync_start;
+	out->vsync_end = in->vsync_end;
+	out->vtotal = in->vtotal;
+	out->vscan = in->vscan;
+	out->vrefresh = in->vrefresh;
+	out->flags = in->flags;
+	out->type = in->type;
+	strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
+	out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
+
+	return 0;
+}
+
+/**
+ * drm_mode_getresources - get graphics configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Construct a set of configuration description structures and return
+ * them to the user, including CRTC, connector and framebuffer configuration.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_getresources(struct drm_device *dev, void *data,
+			  struct drm_file *file_priv)
+{
+	struct drm_mode_card_res *card_res = data;
+	struct list_head *lh;
+	struct drm_framebuffer *fb;
+	struct drm_connector *connector;
+	struct drm_crtc *crtc;
+	struct drm_encoder *encoder;
+	int ret = 0;
+	int connector_count = 0;
+	int crtc_count = 0;
+	int fb_count = 0;
+	int encoder_count = 0;
+	int copied = 0, i;
+	uint32_t __user *fb_id;
+	uint32_t __user *crtc_id;
+	uint32_t __user *connector_id;
+	uint32_t __user *encoder_id;
+	struct drm_mode_group *mode_group;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+
+	mutex_lock(&file_priv->fbs_lock);
+	/*
+	 * For the non-control nodes we need to limit the list of resources
+	 * by IDs in the group list for this node
+	 */
+	list_for_each(lh, &file_priv->fbs)
+		fb_count++;
+
+	/* handle this in 4 parts */
+	/* FBs */
+	if (card_res->count_fbs >= fb_count) {
+		copied = 0;
+		fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
+		list_for_each_entry(fb, &file_priv->fbs, filp_head) {
+			if (put_user(fb->base.id, fb_id + copied)) {
+				mutex_unlock(&file_priv->fbs_lock);
+				return -EFAULT;
+			}
+			copied++;
+		}
+	}
+	card_res->count_fbs = fb_count;
+	mutex_unlock(&file_priv->fbs_lock);
+
+	drm_modeset_lock_all(dev);
+	mode_group = &file_priv->master->minor->mode_group;
+	if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
+
+		list_for_each(lh, &dev->mode_config.crtc_list)
+			crtc_count++;
+
+		list_for_each(lh, &dev->mode_config.connector_list)
+			connector_count++;
+
+		list_for_each(lh, &dev->mode_config.encoder_list)
+			encoder_count++;
+	} else {
+
+		crtc_count = mode_group->num_crtcs;
+		connector_count = mode_group->num_connectors;
+		encoder_count = mode_group->num_encoders;
+	}
+
+	card_res->max_height = dev->mode_config.max_height;
+	card_res->min_height = dev->mode_config.min_height;
+	card_res->max_width = dev->mode_config.max_width;
+	card_res->min_width = dev->mode_config.min_width;
+
+	/* CRTCs */
+	if (card_res->count_crtcs >= crtc_count) {
+		copied = 0;
+		crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
+		if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
+			list_for_each_entry(crtc, &dev->mode_config.crtc_list,
+					    head) {
+				DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
+				if (put_user(crtc->base.id, crtc_id + copied)) {
+					ret = -EFAULT;
+					goto out;
+				}
+				copied++;
+			}
+		} else {
+			for (i = 0; i < mode_group->num_crtcs; i++) {
+				if (put_user(mode_group->id_list[i],
+					     crtc_id + copied)) {
+					ret = -EFAULT;
+					goto out;
+				}
+				copied++;
+			}
+		}
+	}
+	card_res->count_crtcs = crtc_count;
+
+	/* Encoders */
+	if (card_res->count_encoders >= encoder_count) {
+		copied = 0;
+		encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
+		if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
+			list_for_each_entry(encoder,
+					    &dev->mode_config.encoder_list,
+					    head) {
+				DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
+						drm_get_encoder_name(encoder));
+				if (put_user(encoder->base.id, encoder_id +
+					     copied)) {
+					ret = -EFAULT;
+					goto out;
+				}
+				copied++;
+			}
+		} else {
+			for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
+				if (put_user(mode_group->id_list[i],
+					     encoder_id + copied)) {
+					ret = -EFAULT;
+					goto out;
+				}
+				copied++;
+			}
+
+		}
+	}
+	card_res->count_encoders = encoder_count;
+
+	/* Connectors */
+	if (card_res->count_connectors >= connector_count) {
+		copied = 0;
+		connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
+		if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
+			list_for_each_entry(connector,
+					    &dev->mode_config.connector_list,
+					    head) {
+				DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+					connector->base.id,
+					drm_get_connector_name(connector));
+				if (put_user(connector->base.id,
+					     connector_id + copied)) {
+					ret = -EFAULT;
+					goto out;
+				}
+				copied++;
+			}
+		} else {
+			int start = mode_group->num_crtcs +
+				mode_group->num_encoders;
+			for (i = start; i < start + mode_group->num_connectors; i++) {
+				if (put_user(mode_group->id_list[i],
+					     connector_id + copied)) {
+					ret = -EFAULT;
+					goto out;
+				}
+				copied++;
+			}
+		}
+	}
+	card_res->count_connectors = connector_count;
+
+	DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
+		  card_res->count_connectors, card_res->count_encoders);
+
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+/**
+ * drm_mode_getcrtc - get CRTC configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Construct a CRTC configuration structure to return to the user.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_getcrtc(struct drm_device *dev,
+		     void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_crtc *crtc_resp = data;
+	struct drm_crtc *crtc;
+	struct drm_mode_object *obj;
+	int ret = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+
+	obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
+				   DRM_MODE_OBJECT_CRTC);
+	if (!obj) {
+		ret = -EINVAL;
+		goto out;
+	}
+	crtc = obj_to_crtc(obj);
+
+	crtc_resp->x = crtc->x;
+	crtc_resp->y = crtc->y;
+	crtc_resp->gamma_size = crtc->gamma_size;
+	if (crtc->fb)
+		crtc_resp->fb_id = crtc->fb->base.id;
+	else
+		crtc_resp->fb_id = 0;
+
+	if (crtc->enabled) {
+
+		drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
+		crtc_resp->mode_valid = 1;
+
+	} else {
+		crtc_resp->mode_valid = 0;
+	}
+
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+/**
+ * drm_mode_getconnector - get connector configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Construct a connector configuration structure to return to the user.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_getconnector(struct drm_device *dev, void *data,
+			  struct drm_file *file_priv)
+{
+	struct drm_mode_get_connector *out_resp = data;
+	struct drm_mode_object *obj;
+	struct drm_connector *connector;
+	struct drm_display_mode *mode;
+	int mode_count = 0;
+	int props_count = 0;
+	int encoders_count = 0;
+	int ret = 0;
+	int copied = 0;
+	int i;
+	struct drm_mode_modeinfo u_mode;
+	struct drm_mode_modeinfo __user *mode_ptr;
+	uint32_t __user *prop_ptr;
+	uint64_t __user *prop_values;
+	uint32_t __user *encoder_ptr;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
+
+	DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
+
+	mutex_lock(&dev->mode_config.mutex);
+
+	obj = drm_mode_object_find(dev, out_resp->connector_id,
+				   DRM_MODE_OBJECT_CONNECTOR);
+	if (!obj) {
+		ret = -EINVAL;
+		goto out;
+	}
+	connector = obj_to_connector(obj);
+
+	props_count = connector->properties.count;
+
+	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
+		if (connector->encoder_ids[i] != 0) {
+			encoders_count++;
+		}
+	}
+
+	if (out_resp->count_modes == 0) {
+		connector->funcs->fill_modes(connector,
+					     dev->mode_config.max_width,
+					     dev->mode_config.max_height);
+	}
+
+	/* delayed so we get modes regardless of pre-fill_modes state */
+	list_for_each_entry(mode, &connector->modes, head)
+		mode_count++;
+
+	out_resp->connector_id = connector->base.id;
+	out_resp->connector_type = connector->connector_type;
+	out_resp->connector_type_id = connector->connector_type_id;
+	out_resp->mm_width = connector->display_info.width_mm;
+	out_resp->mm_height = connector->display_info.height_mm;
+	out_resp->subpixel = connector->display_info.subpixel_order;
+	out_resp->connection = connector->status;
+	if (connector->encoder)
+		out_resp->encoder_id = connector->encoder->base.id;
+	else
+		out_resp->encoder_id = 0;
+
+	/*
+	 * This ioctl is called twice, once to determine how much space is
+	 * needed, and the 2nd time to fill it.
+	 */
+	if ((out_resp->count_modes >= mode_count) && mode_count) {
+		copied = 0;
+		mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
+		list_for_each_entry(mode, &connector->modes, head) {
+			drm_crtc_convert_to_umode(&u_mode, mode);
+			if (copy_to_user(mode_ptr + copied,
+					 &u_mode, sizeof(u_mode))) {
+				ret = -EFAULT;
+				goto out;
+			}
+			copied++;
+		}
+	}
+	out_resp->count_modes = mode_count;
+
+	if ((out_resp->count_props >= props_count) && props_count) {
+		copied = 0;
+		prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
+		prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
+		for (i = 0; i < connector->properties.count; i++) {
+			if (put_user(connector->properties.ids[i],
+				     prop_ptr + copied)) {
+				ret = -EFAULT;
+				goto out;
+			}
+
+			if (put_user(connector->properties.values[i],
+				     prop_values + copied)) {
+				ret = -EFAULT;
+				goto out;
+			}
+			copied++;
+		}
+	}
+	out_resp->count_props = props_count;
+
+	if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
+		copied = 0;
+		encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
+		for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
+			if (connector->encoder_ids[i] != 0) {
+				if (put_user(connector->encoder_ids[i],
+					     encoder_ptr + copied)) {
+					ret = -EFAULT;
+					goto out;
+				}
+				copied++;
+			}
+		}
+	}
+	out_resp->count_encoders = encoders_count;
+
+out:
+	mutex_unlock(&dev->mode_config.mutex);
+
+	return ret;
+}
+
+int drm_mode_getencoder(struct drm_device *dev, void *data,
+			struct drm_file *file_priv)
+{
+	struct drm_mode_get_encoder *enc_resp = data;
+	struct drm_mode_object *obj;
+	struct drm_encoder *encoder;
+	int ret = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+	obj = drm_mode_object_find(dev, enc_resp->encoder_id,
+				   DRM_MODE_OBJECT_ENCODER);
+	if (!obj) {
+		ret = -EINVAL;
+		goto out;
+	}
+	encoder = obj_to_encoder(obj);
+
+	if (encoder->crtc)
+		enc_resp->crtc_id = encoder->crtc->base.id;
+	else
+		enc_resp->crtc_id = 0;
+	enc_resp->encoder_type = encoder->encoder_type;
+	enc_resp->encoder_id = encoder->base.id;
+	enc_resp->possible_crtcs = encoder->possible_crtcs;
+	enc_resp->possible_clones = encoder->possible_clones;
+
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+/**
+ * drm_mode_getplane_res - get plane info
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * Return an plane count and set of IDs.
+ */
+int drm_mode_getplane_res(struct drm_device *dev, void *data,
+			    struct drm_file *file_priv)
+{
+	struct drm_mode_get_plane_res *plane_resp = data;
+	struct drm_mode_config *config;
+	struct drm_plane *plane;
+	uint32_t __user *plane_ptr;
+	int copied = 0, ret = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+	config = &dev->mode_config;
+
+	/*
+	 * This ioctl is called twice, once to determine how much space is
+	 * needed, and the 2nd time to fill it.
+	 */
+	if (config->num_plane &&
+	    (plane_resp->count_planes >= config->num_plane)) {
+		plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
+
+		list_for_each_entry(plane, &config->plane_list, head) {
+			if (put_user(plane->base.id, plane_ptr + copied)) {
+				ret = -EFAULT;
+				goto out;
+			}
+			copied++;
+		}
+	}
+	plane_resp->count_planes = config->num_plane;
+
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+/**
+ * drm_mode_getplane - get plane info
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * Return plane info, including formats supported, gamma size, any
+ * current fb, etc.
+ */
+int drm_mode_getplane(struct drm_device *dev, void *data,
+			struct drm_file *file_priv)
+{
+	struct drm_mode_get_plane *plane_resp = data;
+	struct drm_mode_object *obj;
+	struct drm_plane *plane;
+	uint32_t __user *format_ptr;
+	int ret = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+	obj = drm_mode_object_find(dev, plane_resp->plane_id,
+				   DRM_MODE_OBJECT_PLANE);
+	if (!obj) {
+		ret = -ENOENT;
+		goto out;
+	}
+	plane = obj_to_plane(obj);
+
+	if (plane->crtc)
+		plane_resp->crtc_id = plane->crtc->base.id;
+	else
+		plane_resp->crtc_id = 0;
+
+	if (plane->fb)
+		plane_resp->fb_id = plane->fb->base.id;
+	else
+		plane_resp->fb_id = 0;
+
+	plane_resp->plane_id = plane->base.id;
+	plane_resp->possible_crtcs = plane->possible_crtcs;
+	plane_resp->gamma_size = plane->gamma_size;
+
+	/*
+	 * This ioctl is called twice, once to determine how much space is
+	 * needed, and the 2nd time to fill it.
+	 */
+	if (plane->format_count &&
+	    (plane_resp->count_format_types >= plane->format_count)) {
+		format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
+		if (copy_to_user(format_ptr,
+				 plane->format_types,
+				 sizeof(uint32_t) * plane->format_count)) {
+			ret = -EFAULT;
+			goto out;
+		}
+	}
+	plane_resp->count_format_types = plane->format_count;
+
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+/**
+ * drm_mode_setplane - set up or tear down an plane
+ * @dev: DRM device
+ * @data: ioctl data*
+ * @file_priv: DRM file info
+ *
+ * Set plane info, including placement, fb, scaling, and other factors.
+ * Or pass a NULL fb to disable.
+ */
+int drm_mode_setplane(struct drm_device *dev, void *data,
+			struct drm_file *file_priv)
+{
+	struct drm_mode_set_plane *plane_req = data;
+	struct drm_mode_object *obj;
+	struct drm_plane *plane;
+	struct drm_crtc *crtc;
+	struct drm_framebuffer *fb = NULL, *old_fb = NULL;
+	int ret = 0;
+	unsigned int fb_width, fb_height;
+	int i;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	/*
+	 * First, find the plane, crtc, and fb objects.  If not available,
+	 * we don't bother to call the driver.
+	 */
+	obj = drm_mode_object_find(dev, plane_req->plane_id,
+				   DRM_MODE_OBJECT_PLANE);
+	if (!obj) {
+		DRM_DEBUG_KMS("Unknown plane ID %d\n",
+			      plane_req->plane_id);
+		return -ENOENT;
+	}
+	plane = obj_to_plane(obj);
+
+	/* No fb means shut it down */
+	if (!plane_req->fb_id) {
+		drm_modeset_lock_all(dev);
+		old_fb = plane->fb;
+		plane->funcs->disable_plane(plane);
+		plane->crtc = NULL;
+		plane->fb = NULL;
+		drm_modeset_unlock_all(dev);
+		goto out;
+	}
+
+	obj = drm_mode_object_find(dev, plane_req->crtc_id,
+				   DRM_MODE_OBJECT_CRTC);
+	if (!obj) {
+		DRM_DEBUG_KMS("Unknown crtc ID %d\n",
+			      plane_req->crtc_id);
+		ret = -ENOENT;
+		goto out;
+	}
+	crtc = obj_to_crtc(obj);
+
+	fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
+	if (!fb) {
+		DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
+			      plane_req->fb_id);
+		ret = -ENOENT;
+		goto out;
+	}
+
+	/* Check whether this plane supports the fb pixel format. */
+	for (i = 0; i < plane->format_count; i++)
+		if (fb->pixel_format == plane->format_types[i])
+			break;
+	if (i == plane->format_count) {
+		DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	fb_width = fb->width << 16;
+	fb_height = fb->height << 16;
+
+	/* Make sure source coordinates are inside the fb. */
+	if (plane_req->src_w > fb_width ||
+	    plane_req->src_x > fb_width - plane_req->src_w ||
+	    plane_req->src_h > fb_height ||
+	    plane_req->src_y > fb_height - plane_req->src_h) {
+		DRM_DEBUG_KMS("Invalid source coordinates "
+			      "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
+			      plane_req->src_w >> 16,
+			      ((plane_req->src_w & 0xffff) * 15625) >> 10,
+			      plane_req->src_h >> 16,
+			      ((plane_req->src_h & 0xffff) * 15625) >> 10,
+			      plane_req->src_x >> 16,
+			      ((plane_req->src_x & 0xffff) * 15625) >> 10,
+			      plane_req->src_y >> 16,
+			      ((plane_req->src_y & 0xffff) * 15625) >> 10);
+		ret = -ENOSPC;
+		goto out;
+	}
+
+	/* Give drivers some help against integer overflows */
+	if (plane_req->crtc_w > INT_MAX ||
+	    plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
+	    plane_req->crtc_h > INT_MAX ||
+	    plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
+		DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
+			      plane_req->crtc_w, plane_req->crtc_h,
+			      plane_req->crtc_x, plane_req->crtc_y);
+		ret = -ERANGE;
+		goto out;
+	}
+
+	drm_modeset_lock_all(dev);
+	ret = plane->funcs->update_plane(plane, crtc, fb,
+					 plane_req->crtc_x, plane_req->crtc_y,
+					 plane_req->crtc_w, plane_req->crtc_h,
+					 plane_req->src_x, plane_req->src_y,
+					 plane_req->src_w, plane_req->src_h);
+	if (!ret) {
+		old_fb = plane->fb;
+		plane->crtc = crtc;
+		plane->fb = fb;
+		fb = NULL;
+	}
+	drm_modeset_unlock_all(dev);
+
+out:
+	if (fb)
+		drm_framebuffer_unreference(fb);
+	if (old_fb)
+		drm_framebuffer_unreference(old_fb);
+
+	return ret;
+}
+
+/**
+ * drm_mode_set_config_internal - helper to call ->set_config
+ * @set: modeset config to set
+ *
+ * This is a little helper to wrap internal calls to the ->set_config driver
+ * interface. The only thing it adds is correct refcounting dance.
+ */
+int drm_mode_set_config_internal(struct drm_mode_set *set)
+{
+	struct drm_crtc *crtc = set->crtc;
+	struct drm_framebuffer *fb, *old_fb;
+	int ret;
+
+	old_fb = crtc->fb;
+	fb = set->fb;
+
+	ret = crtc->funcs->set_config(set);
+	if (ret == 0) {
+		if (old_fb)
+			drm_framebuffer_unreference(old_fb);
+		if (fb)
+			drm_framebuffer_reference(fb);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(drm_mode_set_config_internal);
+
+/**
+ * drm_mode_setcrtc - set CRTC configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Build a new CRTC configuration based on user request.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_setcrtc(struct drm_device *dev, void *data,
+		     struct drm_file *file_priv)
+{
+	struct drm_mode_config *config = &dev->mode_config;
+	struct drm_mode_crtc *crtc_req = data;
+	struct drm_mode_object *obj;
+	struct drm_crtc *crtc;
+	struct drm_connector **connector_set = NULL, *connector;
+	struct drm_framebuffer *fb = NULL;
+	struct drm_display_mode *mode = NULL;
+	struct drm_mode_set set;
+	uint32_t __user *set_connectors_ptr;
+	int ret;
+	int i;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	/* For some reason crtc x/y offsets are signed internally. */
+	if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
+		return -ERANGE;
+
+	drm_modeset_lock_all(dev);
+	obj = drm_mode_object_find(dev, crtc_req->crtc_id,
+				   DRM_MODE_OBJECT_CRTC);
+	if (!obj) {
+		DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
+		ret = -EINVAL;
+		goto out;
+	}
+	crtc = obj_to_crtc(obj);
+	DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
+
+	if (crtc_req->mode_valid) {
+		int hdisplay, vdisplay;
+		/* If we have a mode we need a framebuffer. */
+		/* If we pass -1, set the mode with the currently bound fb */
+		if (crtc_req->fb_id == -1) {
+			if (!crtc->fb) {
+				DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
+				ret = -EINVAL;
+				goto out;
+			}
+			fb = crtc->fb;
+			/* Make refcounting symmetric with the lookup path. */
+			drm_framebuffer_reference(fb);
+		} else {
+			fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
+			if (!fb) {
+				DRM_DEBUG_KMS("Unknown FB ID%d\n",
+						crtc_req->fb_id);
+				ret = -EINVAL;
+				goto out;
+			}
+		}
+
+		mode = drm_mode_create(dev);
+		if (!mode) {
+			ret = -ENOMEM;
+			goto out;
+		}
+
+		ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
+		if (ret) {
+			DRM_DEBUG_KMS("Invalid mode\n");
+			goto out;
+		}
+
+		drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
+
+		hdisplay = mode->hdisplay;
+		vdisplay = mode->vdisplay;
+
+		if (crtc->invert_dimensions)
+			swap(hdisplay, vdisplay);
+
+		if (hdisplay > fb->width ||
+		    vdisplay > fb->height ||
+		    crtc_req->x > fb->width - hdisplay ||
+		    crtc_req->y > fb->height - vdisplay) {
+			DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
+				      fb->width, fb->height,
+				      hdisplay, vdisplay, crtc_req->x, crtc_req->y,
+				      crtc->invert_dimensions ? " (inverted)" : "");
+			ret = -ENOSPC;
+			goto out;
+		}
+	}
+
+	if (crtc_req->count_connectors == 0 && mode) {
+		DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
+		DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
+			  crtc_req->count_connectors);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (crtc_req->count_connectors > 0) {
+		u32 out_id;
+
+		/* Avoid unbounded kernel memory allocation */
+		if (crtc_req->count_connectors > config->num_connector) {
+			ret = -EINVAL;
+			goto out;
+		}
+
+		connector_set = kmalloc(crtc_req->count_connectors *
+					sizeof(struct drm_connector *),
+					GFP_KERNEL);
+		if (!connector_set) {
+			ret = -ENOMEM;
+			goto out;
+		}
+
+		for (i = 0; i < crtc_req->count_connectors; i++) {
+			set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
+			if (get_user(out_id, &set_connectors_ptr[i])) {
+				ret = -EFAULT;
+				goto out;
+			}
+
+			obj = drm_mode_object_find(dev, out_id,
+						   DRM_MODE_OBJECT_CONNECTOR);
+			if (!obj) {
+				DRM_DEBUG_KMS("Connector id %d unknown\n",
+						out_id);
+				ret = -EINVAL;
+				goto out;
+			}
+			connector = obj_to_connector(obj);
+			DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+					connector->base.id,
+					drm_get_connector_name(connector));
+
+			connector_set[i] = connector;
+		}
+	}
+
+	set.crtc = crtc;
+	set.x = crtc_req->x;
+	set.y = crtc_req->y;
+	set.mode = mode;
+	set.connectors = connector_set;
+	set.num_connectors = crtc_req->count_connectors;
+	set.fb = fb;
+	ret = drm_mode_set_config_internal(&set);
+
+out:
+	if (fb)
+		drm_framebuffer_unreference(fb);
+
+	kfree(connector_set);
+	drm_mode_destroy(dev, mode);
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+int drm_mode_cursor_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_cursor *req = data;
+	struct drm_mode_object *obj;
+	struct drm_crtc *crtc;
+	int ret = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
+		return -EINVAL;
+
+	obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
+	if (!obj) {
+		DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
+		return -EINVAL;
+	}
+	crtc = obj_to_crtc(obj);
+
+	mutex_lock(&crtc->mutex);
+	if (req->flags & DRM_MODE_CURSOR_BO) {
+		if (!crtc->funcs->cursor_set) {
+			ret = -ENXIO;
+			goto out;
+		}
+		/* Turns off the cursor if handle is 0 */
+		ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
+					      req->width, req->height);
+	}
+
+	if (req->flags & DRM_MODE_CURSOR_MOVE) {
+		if (crtc->funcs->cursor_move) {
+			ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
+		} else {
+			ret = -EFAULT;
+			goto out;
+		}
+	}
+out:
+	mutex_unlock(&crtc->mutex);
+
+	return ret;
+}
+
+/* Original addfb only supported RGB formats, so figure out which one */
+uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
+{
+	uint32_t fmt;
+
+	switch (bpp) {
+	case 8:
+		fmt = DRM_FORMAT_C8;
+		break;
+	case 16:
+		if (depth == 15)
+			fmt = DRM_FORMAT_XRGB1555;
+		else
+			fmt = DRM_FORMAT_RGB565;
+		break;
+	case 24:
+		fmt = DRM_FORMAT_RGB888;
+		break;
+	case 32:
+		if (depth == 24)
+			fmt = DRM_FORMAT_XRGB8888;
+		else if (depth == 30)
+			fmt = DRM_FORMAT_XRGB2101010;
+		else
+			fmt = DRM_FORMAT_ARGB8888;
+		break;
+	default:
+		DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
+		fmt = DRM_FORMAT_XRGB8888;
+		break;
+	}
+
+	return fmt;
+}
+EXPORT_SYMBOL(drm_mode_legacy_fb_format);
+
+/**
+ * drm_mode_addfb - add an FB to the graphics configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Add a new FB to the specified CRTC, given a user request.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_addfb(struct drm_device *dev,
+		   void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_fb_cmd *or = data;
+	struct drm_mode_fb_cmd2 r = {};
+	struct drm_mode_config *config = &dev->mode_config;
+	struct drm_framebuffer *fb;
+	int ret = 0;
+
+	/* Use new struct with format internally */
+	r.fb_id = or->fb_id;
+	r.width = or->width;
+	r.height = or->height;
+	r.pitches[0] = or->pitch;
+	r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
+	r.handles[0] = or->handle;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	if ((config->min_width > r.width) || (r.width > config->max_width))
+		return -EINVAL;
+
+	if ((config->min_height > r.height) || (r.height > config->max_height))
+		return -EINVAL;
+
+	fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
+	if (IS_ERR(fb)) {
+		DRM_DEBUG_KMS("could not create framebuffer\n");
+		return PTR_ERR(fb);
+	}
+
+	mutex_lock(&file_priv->fbs_lock);
+	or->fb_id = fb->base.id;
+	list_add(&fb->filp_head, &file_priv->fbs);
+	DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
+	mutex_unlock(&file_priv->fbs_lock);
+
+	return ret;
+}
+
+static int format_check(const struct drm_mode_fb_cmd2 *r)
+{
+	uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
+
+	switch (format) {
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_RGB332:
+	case DRM_FORMAT_BGR233:
+	case DRM_FORMAT_XRGB4444:
+	case DRM_FORMAT_XBGR4444:
+	case DRM_FORMAT_RGBX4444:
+	case DRM_FORMAT_BGRX4444:
+	case DRM_FORMAT_ARGB4444:
+	case DRM_FORMAT_ABGR4444:
+	case DRM_FORMAT_RGBA4444:
+	case DRM_FORMAT_BGRA4444:
+	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_XBGR1555:
+	case DRM_FORMAT_RGBX5551:
+	case DRM_FORMAT_BGRX5551:
+	case DRM_FORMAT_ARGB1555:
+	case DRM_FORMAT_ABGR1555:
+	case DRM_FORMAT_RGBA5551:
+	case DRM_FORMAT_BGRA5551:
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_BGR565:
+	case DRM_FORMAT_RGB888:
+	case DRM_FORMAT_BGR888:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_RGBX8888:
+	case DRM_FORMAT_BGRX8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_RGBA8888:
+	case DRM_FORMAT_BGRA8888:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_RGBX1010102:
+	case DRM_FORMAT_BGRX1010102:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_RGBA1010102:
+	case DRM_FORMAT_BGRA1010102:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_AYUV:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
+	case DRM_FORMAT_YUV410:
+	case DRM_FORMAT_YVU410:
+	case DRM_FORMAT_YUV411:
+	case DRM_FORMAT_YVU411:
+	case DRM_FORMAT_YUV420:
+	case DRM_FORMAT_YVU420:
+	case DRM_FORMAT_YUV422:
+	case DRM_FORMAT_YVU422:
+	case DRM_FORMAT_YUV444:
+	case DRM_FORMAT_YVU444:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
+{
+	int ret, hsub, vsub, num_planes, i;
+
+	ret = format_check(r);
+	if (ret) {
+		DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format);
+		return ret;
+	}
+
+	hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
+	vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
+	num_planes = drm_format_num_planes(r->pixel_format);
+
+	if (r->width == 0 || r->width % hsub) {
+		DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
+		return -EINVAL;
+	}
+
+	if (r->height == 0 || r->height % vsub) {
+		DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_planes; i++) {
+		unsigned int width = r->width / (i != 0 ? hsub : 1);
+		unsigned int height = r->height / (i != 0 ? vsub : 1);
+		unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
+
+		if (!r->handles[i]) {
+			DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
+			return -EINVAL;
+		}
+
+		if ((uint64_t) width * cpp > UINT_MAX)
+			return -ERANGE;
+
+		if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
+			return -ERANGE;
+
+		if (r->pitches[i] < width * cpp) {
+			DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * drm_mode_addfb2 - add an FB to the graphics configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Add a new FB to the specified CRTC, given a user request with format.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_addfb2(struct drm_device *dev,
+		    void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_fb_cmd2 *r = data;
+	struct drm_mode_config *config = &dev->mode_config;
+	struct drm_framebuffer *fb;
+	int ret;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	if (r->flags & ~DRM_MODE_FB_INTERLACED) {
+		DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
+		return -EINVAL;
+	}
+
+	if ((config->min_width > r->width) || (r->width > config->max_width)) {
+		DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
+			  r->width, config->min_width, config->max_width);
+		return -EINVAL;
+	}
+	if ((config->min_height > r->height) || (r->height > config->max_height)) {
+		DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
+			  r->height, config->min_height, config->max_height);
+		return -EINVAL;
+	}
+
+	ret = framebuffer_check(r);
+	if (ret)
+		return ret;
+
+	fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
+	if (IS_ERR(fb)) {
+		DRM_DEBUG_KMS("could not create framebuffer\n");
+		return PTR_ERR(fb);
+	}
+
+	mutex_lock(&file_priv->fbs_lock);
+	r->fb_id = fb->base.id;
+	list_add(&fb->filp_head, &file_priv->fbs);
+	DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
+	mutex_unlock(&file_priv->fbs_lock);
+
+
+	return ret;
+}
+
+/**
+ * drm_mode_rmfb - remove an FB from the configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Remove the FB specified by the user.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_rmfb(struct drm_device *dev,
+		   void *data, struct drm_file *file_priv)
+{
+	struct drm_framebuffer *fb = NULL;
+	struct drm_framebuffer *fbl = NULL;
+	uint32_t *id = data;
+	int found = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	mutex_lock(&file_priv->fbs_lock);
+	mutex_lock(&dev->mode_config.fb_lock);
+	fb = __drm_framebuffer_lookup(dev, *id);
+	if (!fb)
+		goto fail_lookup;
+
+	list_for_each_entry(fbl, &file_priv->fbs, filp_head)
+		if (fb == fbl)
+			found = 1;
+	if (!found)
+		goto fail_lookup;
+
+	/* Mark fb as reaped, we still have a ref from fpriv->fbs. */
+	__drm_framebuffer_unregister(dev, fb);
+
+	list_del_init(&fb->filp_head);
+	mutex_unlock(&dev->mode_config.fb_lock);
+	mutex_unlock(&file_priv->fbs_lock);
+
+	drm_framebuffer_remove(fb);
+
+	return 0;
+
+fail_lookup:
+	mutex_unlock(&dev->mode_config.fb_lock);
+	mutex_unlock(&file_priv->fbs_lock);
+
+	return -EINVAL;
+}
+
+/**
+ * drm_mode_getfb - get FB info
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Lookup the FB given its ID and return info about it.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_getfb(struct drm_device *dev,
+		   void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_fb_cmd *r = data;
+	struct drm_framebuffer *fb;
+	int ret;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	fb = drm_framebuffer_lookup(dev, r->fb_id);
+	if (!fb)
+		return -EINVAL;
+
+	r->height = fb->height;
+	r->width = fb->width;
+	r->depth = fb->depth;
+	r->bpp = fb->bits_per_pixel;
+	r->pitch = fb->pitches[0];
+	if (fb->funcs->create_handle) {
+		if (file_priv->is_master || capable(CAP_SYS_ADMIN)) {
+			ret = fb->funcs->create_handle(fb, file_priv,
+						       &r->handle);
+		} else {
+			/* GET_FB() is an unprivileged ioctl so we must not
+			 * return a buffer-handle to non-master processes! For
+			 * backwards-compatibility reasons, we cannot make
+			 * GET_FB() privileged, so just return an invalid handle
+			 * for non-masters. */
+			r->handle = 0;
+			ret = 0;
+		}
+	} else {
+		ret = -ENODEV;
+	}
+
+	drm_framebuffer_unreference(fb);
+
+	return ret;
+}
+
+int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
+			   void *data, struct drm_file *file_priv)
+{
+	struct drm_clip_rect __user *clips_ptr;
+	struct drm_clip_rect *clips = NULL;
+	struct drm_mode_fb_dirty_cmd *r = data;
+	struct drm_framebuffer *fb;
+	unsigned flags;
+	int num_clips;
+	int ret;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	fb = drm_framebuffer_lookup(dev, r->fb_id);
+	if (!fb)
+		return -EINVAL;
+
+	num_clips = r->num_clips;
+	clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
+
+	if (!num_clips != !clips_ptr) {
+		ret = -EINVAL;
+		goto out_err1;
+	}
+
+	flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
+
+	/* If userspace annotates copy, clips must come in pairs */
+	if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
+		ret = -EINVAL;
+		goto out_err1;
+	}
+
+	if (num_clips && clips_ptr) {
+		if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
+			ret = -EINVAL;
+			goto out_err1;
+		}
+		clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
+		if (!clips) {
+			ret = -ENOMEM;
+			goto out_err1;
+		}
+
+		ret = copy_from_user(clips, clips_ptr,
+				     num_clips * sizeof(*clips));
+		if (ret) {
+			ret = -EFAULT;
+			goto out_err2;
+		}
+	}
+
+	if (fb->funcs->dirty) {
+		drm_modeset_lock_all(dev);
+		ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
+				       clips, num_clips);
+		drm_modeset_unlock_all(dev);
+	} else {
+		ret = -ENOSYS;
+	}
+
+out_err2:
+	kfree(clips);
+out_err1:
+	drm_framebuffer_unreference(fb);
+
+	return ret;
+}
+
+
+/**
+ * drm_fb_release - remove and free the FBs on this file
+ * @priv: drm file for the ioctl
+ *
+ * Destroy all the FBs associated with @filp.
+ *
+ * Called by the user via ioctl.
+ *
+ * RETURNS:
+ * Zero on success, errno on failure.
+ */
+void drm_fb_release(struct drm_file *priv)
+{
+	struct drm_device *dev = priv->minor->dev;
+	struct drm_framebuffer *fb, *tfb;
+
+	mutex_lock(&priv->fbs_lock);
+	list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
+
+		mutex_lock(&dev->mode_config.fb_lock);
+		/* Mark fb as reaped, we still have a ref from fpriv->fbs. */
+		__drm_framebuffer_unregister(dev, fb);
+		mutex_unlock(&dev->mode_config.fb_lock);
+
+		list_del_init(&fb->filp_head);
+
+		/* This will also drop the fpriv->fbs reference. */
+		drm_framebuffer_remove(fb);
+	}
+	mutex_unlock(&priv->fbs_lock);
+}
+
+struct drm_property *drm_property_create(struct drm_device *dev, int flags,
+					 const char *name, int num_values)
+{
+	struct drm_property *property = NULL;
+	int ret;
+
+	property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
+	if (!property)
+		return NULL;
+
+	if (num_values) {
+		property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
+		if (!property->values)
+			goto fail;
+	}
+
+	ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
+	if (ret)
+		goto fail;
+
+	property->flags = flags;
+	property->num_values = num_values;
+	INIT_LIST_HEAD(&property->enum_blob_list);
+
+	if (name) {
+		strncpy(property->name, name, DRM_PROP_NAME_LEN);
+		property->name[DRM_PROP_NAME_LEN-1] = '\0';
+	}
+
+	list_add_tail(&property->head, &dev->mode_config.property_list);
+	return property;
+fail:
+	kfree(property->values);
+	kfree(property);
+	return NULL;
+}
+EXPORT_SYMBOL(drm_property_create);
+
+struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
+					 const char *name,
+					 const struct drm_prop_enum_list *props,
+					 int num_values)
+{
+	struct drm_property *property;
+	int i, ret;
+
+	flags |= DRM_MODE_PROP_ENUM;
+
+	property = drm_property_create(dev, flags, name, num_values);
+	if (!property)
+		return NULL;
+
+	for (i = 0; i < num_values; i++) {
+		ret = drm_property_add_enum(property, i,
+				      props[i].type,
+				      props[i].name);
+		if (ret) {
+			drm_property_destroy(dev, property);
+			return NULL;
+		}
+	}
+
+	return property;
+}
+EXPORT_SYMBOL(drm_property_create_enum);
+
+struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
+					 int flags, const char *name,
+					 const struct drm_prop_enum_list *props,
+					 int num_values)
+{
+	struct drm_property *property;
+	int i, ret;
+
+	flags |= DRM_MODE_PROP_BITMASK;
+
+	property = drm_property_create(dev, flags, name, num_values);
+	if (!property)
+		return NULL;
+
+	for (i = 0; i < num_values; i++) {
+		ret = drm_property_add_enum(property, i,
+				      props[i].type,
+				      props[i].name);
+		if (ret) {
+			drm_property_destroy(dev, property);
+			return NULL;
+		}
+	}
+
+	return property;
+}
+EXPORT_SYMBOL(drm_property_create_bitmask);
+
+struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
+					 const char *name,
+					 uint64_t min, uint64_t max)
+{
+	struct drm_property *property;
+
+	flags |= DRM_MODE_PROP_RANGE;
+
+	property = drm_property_create(dev, flags, name, 2);
+	if (!property)
+		return NULL;
+
+	property->values[0] = min;
+	property->values[1] = max;
+
+	return property;
+}
+EXPORT_SYMBOL(drm_property_create_range);
+
+int drm_property_add_enum(struct drm_property *property, int index,
+			  uint64_t value, const char *name)
+{
+	struct drm_property_enum *prop_enum;
+
+	if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
+		return -EINVAL;
+
+	/*
+	 * Bitmask enum properties have the additional constraint of values
+	 * from 0 to 63
+	 */
+	if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
+		return -EINVAL;
+
+	if (!list_empty(&property->enum_blob_list)) {
+		list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
+			if (prop_enum->value == value) {
+				strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
+				prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
+				return 0;
+			}
+		}
+	}
+
+	prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
+	if (!prop_enum)
+		return -ENOMEM;
+
+	strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
+	prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
+	prop_enum->value = value;
+
+	property->values[index] = value;
+	list_add_tail(&prop_enum->head, &property->enum_blob_list);
+	return 0;
+}
+EXPORT_SYMBOL(drm_property_add_enum);
+
+void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
+{
+	struct drm_property_enum *prop_enum, *pt;
+
+	list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
+		list_del(&prop_enum->head);
+		kfree(prop_enum);
+	}
+
+	if (property->num_values)
+		kfree(property->values);
+	drm_mode_object_put(dev, &property->base);
+	list_del(&property->head);
+	kfree(property);
+}
+EXPORT_SYMBOL(drm_property_destroy);
+
+void drm_object_attach_property(struct drm_mode_object *obj,
+				struct drm_property *property,
+				uint64_t init_val)
+{
+	int count = obj->properties->count;
+
+	if (count == DRM_OBJECT_MAX_PROPERTY) {
+		WARN(1, "Failed to attach object property (type: 0x%x). Please "
+			"increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
+			"you see this message on the same object type.\n",
+			obj->type);
+		return;
+	}
+
+	obj->properties->ids[count] = property->base.id;
+	obj->properties->values[count] = init_val;
+	obj->properties->count++;
+}
+EXPORT_SYMBOL(drm_object_attach_property);
+
+int drm_object_property_set_value(struct drm_mode_object *obj,
+				  struct drm_property *property, uint64_t val)
+{
+	int i;
+
+	for (i = 0; i < obj->properties->count; i++) {
+		if (obj->properties->ids[i] == property->base.id) {
+			obj->properties->values[i] = val;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(drm_object_property_set_value);
+
+int drm_object_property_get_value(struct drm_mode_object *obj,
+				  struct drm_property *property, uint64_t *val)
+{
+	int i;
+
+	for (i = 0; i < obj->properties->count; i++) {
+		if (obj->properties->ids[i] == property->base.id) {
+			*val = obj->properties->values[i];
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(drm_object_property_get_value);
+
+int drm_mode_getproperty_ioctl(struct drm_device *dev,
+			       void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_object *obj;
+	struct drm_mode_get_property *out_resp = data;
+	struct drm_property *property;
+	int enum_count = 0;
+	int blob_count = 0;
+	int value_count = 0;
+	int ret = 0, i;
+	int copied;
+	struct drm_property_enum *prop_enum;
+	struct drm_mode_property_enum __user *enum_ptr;
+	struct drm_property_blob *prop_blob;
+	uint32_t __user *blob_id_ptr;
+	uint64_t __user *values_ptr;
+	uint32_t __user *blob_length_ptr;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+	obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
+	if (!obj) {
+		ret = -EINVAL;
+		goto done;
+	}
+	property = obj_to_property(obj);
+
+	if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
+		list_for_each_entry(prop_enum, &property->enum_blob_list, head)
+			enum_count++;
+	} else if (property->flags & DRM_MODE_PROP_BLOB) {
+		list_for_each_entry(prop_blob, &property->enum_blob_list, head)
+			blob_count++;
+	}
+
+	value_count = property->num_values;
+
+	strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
+	out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
+	out_resp->flags = property->flags;
+
+	if ((out_resp->count_values >= value_count) && value_count) {
+		values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
+		for (i = 0; i < value_count; i++) {
+			if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
+				ret = -EFAULT;
+				goto done;
+			}
+		}
+	}
+	out_resp->count_values = value_count;
+
+	if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
+		if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
+			copied = 0;
+			enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
+			list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
+
+				if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
+					ret = -EFAULT;
+					goto done;
+				}
+
+				if (copy_to_user(&enum_ptr[copied].name,
+						 &prop_enum->name, DRM_PROP_NAME_LEN)) {
+					ret = -EFAULT;
+					goto done;
+				}
+				copied++;
+			}
+		}
+		out_resp->count_enum_blobs = enum_count;
+	}
+
+	if (property->flags & DRM_MODE_PROP_BLOB) {
+		if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
+			copied = 0;
+			blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
+			blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
+
+			list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
+				if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
+					ret = -EFAULT;
+					goto done;
+				}
+
+				if (put_user(prop_blob->length, blob_length_ptr + copied)) {
+					ret = -EFAULT;
+					goto done;
+				}
+
+				copied++;
+			}
+		}
+		out_resp->count_enum_blobs = blob_count;
+	}
+done:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
+							  void *data)
+{
+	struct drm_property_blob *blob;
+	int ret;
+
+	if (!length || !data)
+		return NULL;
+
+	blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
+	if (!blob)
+		return NULL;
+
+	ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
+	if (ret) {
+		kfree(blob);
+		return NULL;
+	}
+
+	blob->length = length;
+
+	memcpy(blob->data, data, length);
+
+	list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
+	return blob;
+}
+
+static void drm_property_destroy_blob(struct drm_device *dev,
+			       struct drm_property_blob *blob)
+{
+	drm_mode_object_put(dev, &blob->base);
+	list_del(&blob->head);
+	kfree(blob);
+}
+
+int drm_mode_getblob_ioctl(struct drm_device *dev,
+			   void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_object *obj;
+	struct drm_mode_get_blob *out_resp = data;
+	struct drm_property_blob *blob;
+	int ret = 0;
+	void __user *blob_ptr;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+	obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
+	if (!obj) {
+		ret = -EINVAL;
+		goto done;
+	}
+	blob = obj_to_blob(obj);
+
+	if (out_resp->length == blob->length) {
+		blob_ptr = (void __user *)(unsigned long)out_resp->data;
+		if (copy_to_user(blob_ptr, blob->data, blob->length)){
+			ret = -EFAULT;
+			goto done;
+		}
+	}
+	out_resp->length = blob->length;
+
+done:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+int drm_mode_connector_update_edid_property(struct drm_connector *connector,
+					    struct edid *edid)
+{
+	struct drm_device *dev = connector->dev;
+	int ret, size;
+
+	if (connector->edid_blob_ptr)
+		drm_property_destroy_blob(dev, connector->edid_blob_ptr);
+
+	/* Delete edid, when there is none. */
+	if (!edid) {
+		connector->edid_blob_ptr = NULL;
+		ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
+		return ret;
+	}
+
+	size = EDID_LENGTH * (1 + edid->extensions);
+	connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
+							    size, edid);
+	if (!connector->edid_blob_ptr)
+		return -EINVAL;
+
+	ret = drm_object_property_set_value(&connector->base,
+					       dev->mode_config.edid_property,
+					       connector->edid_blob_ptr->base.id);
+
+	return ret;
+}
+EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
+
+static bool drm_property_change_is_valid(struct drm_property *property,
+					 uint64_t value)
+{
+	if (property->flags & DRM_MODE_PROP_IMMUTABLE)
+		return false;
+	if (property->flags & DRM_MODE_PROP_RANGE) {
+		if (value < property->values[0] || value > property->values[1])
+			return false;
+		return true;
+	} else if (property->flags & DRM_MODE_PROP_BITMASK) {
+		int i;
+		uint64_t valid_mask = 0;
+		for (i = 0; i < property->num_values; i++)
+			valid_mask |= (1ULL << property->values[i]);
+		return !(value & ~valid_mask);
+	} else if (property->flags & DRM_MODE_PROP_BLOB) {
+		/* Only the driver knows */
+		return true;
+	} else {
+		int i;
+		for (i = 0; i < property->num_values; i++)
+			if (property->values[i] == value)
+				return true;
+		return false;
+	}
+}
+
+int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
+				       void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_connector_set_property *conn_set_prop = data;
+	struct drm_mode_obj_set_property obj_set_prop = {
+		.value = conn_set_prop->value,
+		.prop_id = conn_set_prop->prop_id,
+		.obj_id = conn_set_prop->connector_id,
+		.obj_type = DRM_MODE_OBJECT_CONNECTOR
+	};
+
+	/* It does all the locking and checking we need */
+	return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
+}
+
+static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
+					   struct drm_property *property,
+					   uint64_t value)
+{
+	int ret = -EINVAL;
+	struct drm_connector *connector = obj_to_connector(obj);
+
+	/* Do DPMS ourselves */
+	if (property == connector->dev->mode_config.dpms_property) {
+		if (connector->funcs->dpms)
+			(*connector->funcs->dpms)(connector, (int)value);
+		ret = 0;
+	} else if (connector->funcs->set_property)
+		ret = connector->funcs->set_property(connector, property, value);
+
+	/* store the property value if successful */
+	if (!ret)
+		drm_object_property_set_value(&connector->base, property, value);
+	return ret;
+}
+
+static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
+				      struct drm_property *property,
+				      uint64_t value)
+{
+	int ret = -EINVAL;
+	struct drm_crtc *crtc = obj_to_crtc(obj);
+
+	if (crtc->funcs->set_property)
+		ret = crtc->funcs->set_property(crtc, property, value);
+	if (!ret)
+		drm_object_property_set_value(obj, property, value);
+
+	return ret;
+}
+
+static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
+				      struct drm_property *property,
+				      uint64_t value)
+{
+	int ret = -EINVAL;
+	struct drm_plane *plane = obj_to_plane(obj);
+
+	if (plane->funcs->set_property)
+		ret = plane->funcs->set_property(plane, property, value);
+	if (!ret)
+		drm_object_property_set_value(obj, property, value);
+
+	return ret;
+}
+
+int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
+				      struct drm_file *file_priv)
+{
+	struct drm_mode_obj_get_properties *arg = data;
+	struct drm_mode_object *obj;
+	int ret = 0;
+	int i;
+	int copied = 0;
+	int props_count = 0;
+	uint32_t __user *props_ptr;
+	uint64_t __user *prop_values_ptr;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+
+	obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
+	if (!obj) {
+		ret = -EINVAL;
+		goto out;
+	}
+	if (!obj->properties) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	props_count = obj->properties->count;
+
+	/* This ioctl is called twice, once to determine how much space is
+	 * needed, and the 2nd time to fill it. */
+	if ((arg->count_props >= props_count) && props_count) {
+		copied = 0;
+		props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
+		prop_values_ptr = (uint64_t __user *)(unsigned long)
+				  (arg->prop_values_ptr);
+		for (i = 0; i < props_count; i++) {
+			if (put_user(obj->properties->ids[i],
+				     props_ptr + copied)) {
+				ret = -EFAULT;
+				goto out;
+			}
+			if (put_user(obj->properties->values[i],
+				     prop_values_ptr + copied)) {
+				ret = -EFAULT;
+				goto out;
+			}
+			copied++;
+		}
+	}
+	arg->count_props = props_count;
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
+				    struct drm_file *file_priv)
+{
+	struct drm_mode_obj_set_property *arg = data;
+	struct drm_mode_object *arg_obj;
+	struct drm_mode_object *prop_obj;
+	struct drm_property *property;
+	int ret = -EINVAL;
+	int i;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+
+	arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
+	if (!arg_obj)
+		goto out;
+	if (!arg_obj->properties)
+		goto out;
+
+	for (i = 0; i < arg_obj->properties->count; i++)
+		if (arg_obj->properties->ids[i] == arg->prop_id)
+			break;
+
+	if (i == arg_obj->properties->count)
+		goto out;
+
+	prop_obj = drm_mode_object_find(dev, arg->prop_id,
+					DRM_MODE_OBJECT_PROPERTY);
+	if (!prop_obj)
+		goto out;
+	property = obj_to_property(prop_obj);
+
+	if (!drm_property_change_is_valid(property, arg->value))
+		goto out;
+
+	switch (arg_obj->type) {
+	case DRM_MODE_OBJECT_CONNECTOR:
+		ret = drm_mode_connector_set_obj_prop(arg_obj, property,
+						      arg->value);
+		break;
+	case DRM_MODE_OBJECT_CRTC:
+		ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
+		break;
+	case DRM_MODE_OBJECT_PLANE:
+		ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
+		break;
+	}
+
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+int drm_mode_connector_attach_encoder(struct drm_connector *connector,
+				      struct drm_encoder *encoder)
+{
+	int i;
+
+	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
+		if (connector->encoder_ids[i] == 0) {
+			connector->encoder_ids[i] = encoder->base.id;
+			return 0;
+		}
+	}
+	return -ENOMEM;
+}
+EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
+
+void drm_mode_connector_detach_encoder(struct drm_connector *connector,
+				    struct drm_encoder *encoder)
+{
+	int i;
+	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
+		if (connector->encoder_ids[i] == encoder->base.id) {
+			connector->encoder_ids[i] = 0;
+			if (connector->encoder == encoder)
+				connector->encoder = NULL;
+			break;
+		}
+	}
+}
+EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
+
+int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
+				  int gamma_size)
+{
+	crtc->gamma_size = gamma_size;
+
+	crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
+	if (!crtc->gamma_store) {
+		crtc->gamma_size = 0;
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
+
+int drm_mode_gamma_set_ioctl(struct drm_device *dev,
+			     void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_crtc_lut *crtc_lut = data;
+	struct drm_mode_object *obj;
+	struct drm_crtc *crtc;
+	void *r_base, *g_base, *b_base;
+	int size;
+	int ret = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+	obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
+	if (!obj) {
+		ret = -EINVAL;
+		goto out;
+	}
+	crtc = obj_to_crtc(obj);
+
+	if (crtc->funcs->gamma_set == NULL) {
+		ret = -ENOSYS;
+		goto out;
+	}
+
+	/* memcpy into gamma store */
+	if (crtc_lut->gamma_size != crtc->gamma_size) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	size = crtc_lut->gamma_size * (sizeof(uint16_t));
+	r_base = crtc->gamma_store;
+	if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	g_base = r_base + size;
+	if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	b_base = g_base + size;
+	if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
+
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+
+}
+
+int drm_mode_gamma_get_ioctl(struct drm_device *dev,
+			     void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_crtc_lut *crtc_lut = data;
+	struct drm_mode_object *obj;
+	struct drm_crtc *crtc;
+	void *r_base, *g_base, *b_base;
+	int size;
+	int ret = 0;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+	obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
+	if (!obj) {
+		ret = -EINVAL;
+		goto out;
+	}
+	crtc = obj_to_crtc(obj);
+
+	/* memcpy into gamma store */
+	if (crtc_lut->gamma_size != crtc->gamma_size) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	size = crtc_lut->gamma_size * (sizeof(uint16_t));
+	r_base = crtc->gamma_store;
+	if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	g_base = r_base + size;
+	if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	b_base = g_base + size;
+	if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
+		ret = -EFAULT;
+		goto out;
+	}
+out:
+	drm_modeset_unlock_all(dev);
+	return ret;
+}
+
+int drm_mode_page_flip_ioctl(struct drm_device *dev,
+			     void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_crtc_page_flip *page_flip = data;
+	struct drm_mode_object *obj;
+	struct drm_crtc *crtc;
+	struct drm_framebuffer *fb = NULL, *old_fb = NULL;
+	struct drm_pending_vblank_event *e = NULL;
+	unsigned long flags;
+	int hdisplay, vdisplay;
+	int ret = -EINVAL;
+
+	if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
+	    page_flip->reserved != 0)
+		return -EINVAL;
+
+	obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
+	if (!obj)
+		return -EINVAL;
+	crtc = obj_to_crtc(obj);
+
+	mutex_lock(&crtc->mutex);
+	if (crtc->fb == NULL) {
+		/* The framebuffer is currently unbound, presumably
+		 * due to a hotplug event, that userspace has not
+		 * yet discovered.
+		 */
+		ret = -EBUSY;
+		goto out;
+	}
+
+	if (crtc->funcs->page_flip == NULL)
+		goto out;
+
+	fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
+	if (!fb)
+		goto out;
+
+	hdisplay = crtc->mode.hdisplay;
+	vdisplay = crtc->mode.vdisplay;
+
+	if (crtc->invert_dimensions)
+		swap(hdisplay, vdisplay);
+
+	if (hdisplay > fb->width ||
+	    vdisplay > fb->height ||
+	    crtc->x > fb->width - hdisplay ||
+	    crtc->y > fb->height - vdisplay) {
+		DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
+			      fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y,
+			      crtc->invert_dimensions ? " (inverted)" : "");
+		ret = -ENOSPC;
+		goto out;
+	}
+
+	if (crtc->fb->pixel_format != fb->pixel_format) {
+		DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
+		ret = -ENOMEM;
+		spin_lock_irqsave(&dev->event_lock, flags);
+		if (file_priv->event_space < sizeof e->event) {
+			spin_unlock_irqrestore(&dev->event_lock, flags);
+			goto out;
+		}
+		file_priv->event_space -= sizeof e->event;
+		spin_unlock_irqrestore(&dev->event_lock, flags);
+
+		e = kzalloc(sizeof *e, GFP_KERNEL);
+		if (e == NULL) {
+			spin_lock_irqsave(&dev->event_lock, flags);
+			file_priv->event_space += sizeof e->event;
+			spin_unlock_irqrestore(&dev->event_lock, flags);
+			goto out;
+		}
+
+		e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
+		e->event.base.length = sizeof e->event;
+		e->event.user_data = page_flip->user_data;
+		e->base.event = &e->event.base;
+		e->base.file_priv = file_priv;
+		e->base.destroy =
+			(void (*) (struct drm_pending_event *)) kfree;
+	}
+
+	old_fb = crtc->fb;
+	ret = crtc->funcs->page_flip(crtc, fb, e);
+	if (ret) {
+		if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
+			spin_lock_irqsave(&dev->event_lock, flags);
+			file_priv->event_space += sizeof e->event;
+			spin_unlock_irqrestore(&dev->event_lock, flags);
+			kfree(e);
+		}
+		/* Keep the old fb, don't unref it. */
+		old_fb = NULL;
+	} else {
+		/*
+		 * Warn if the driver hasn't properly updated the crtc->fb
+		 * field to reflect that the new framebuffer is now used.
+		 * Failing to do so will screw with the reference counting
+		 * on framebuffers.
+		 */
+		WARN_ON(crtc->fb != fb);
+		/* Unref only the old framebuffer. */
+		fb = NULL;
+	}
+
+out:
+	if (fb)
+		drm_framebuffer_unreference(fb);
+	if (old_fb)
+		drm_framebuffer_unreference(old_fb);
+	mutex_unlock(&crtc->mutex);
+
+	return ret;
+}
+
+void drm_mode_config_reset(struct drm_device *dev)
+{
+	struct drm_crtc *crtc;
+	struct drm_encoder *encoder;
+	struct drm_connector *connector;
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+		if (crtc->funcs->reset)
+			crtc->funcs->reset(crtc);
+
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
+		if (encoder->funcs->reset)
+			encoder->funcs->reset(encoder);
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		connector->status = connector_status_unknown;
+
+		if (connector->funcs->reset)
+			connector->funcs->reset(connector);
+	}
+}
+EXPORT_SYMBOL(drm_mode_config_reset);
+
+int drm_mode_create_dumb_ioctl(struct drm_device *dev,
+			       void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_create_dumb *args = data;
+
+	if (!dev->driver->dumb_create)
+		return -ENOSYS;
+	return dev->driver->dumb_create(file_priv, dev, args);
+}
+
+int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
+			     void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_map_dumb *args = data;
+
+	/* call driver ioctl to get mmap offset */
+	if (!dev->driver->dumb_map_offset)
+		return -ENOSYS;
+
+	return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
+}
+
+int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
+				void *data, struct drm_file *file_priv)
+{
+	struct drm_mode_destroy_dumb *args = data;
+
+	if (!dev->driver->dumb_destroy)
+		return -ENOSYS;
+
+	return dev->driver->dumb_destroy(file_priv, dev, args->handle);
+}
+
+/*
+ * Just need to support RGB formats here for compat with code that doesn't
+ * use pixel formats directly yet.
+ */
+void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
+			  int *bpp)
+{
+	switch (format) {
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_RGB332:
+	case DRM_FORMAT_BGR233:
+		*depth = 8;
+		*bpp = 8;
+		break;
+	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_XBGR1555:
+	case DRM_FORMAT_RGBX5551:
+	case DRM_FORMAT_BGRX5551:
+	case DRM_FORMAT_ARGB1555:
+	case DRM_FORMAT_ABGR1555:
+	case DRM_FORMAT_RGBA5551:
+	case DRM_FORMAT_BGRA5551:
+		*depth = 15;
+		*bpp = 16;
+		break;
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_BGR565:
+		*depth = 16;
+		*bpp = 16;
+		break;
+	case DRM_FORMAT_RGB888:
+	case DRM_FORMAT_BGR888:
+		*depth = 24;
+		*bpp = 24;
+		break;
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_RGBX8888:
+	case DRM_FORMAT_BGRX8888:
+		*depth = 24;
+		*bpp = 32;
+		break;
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_RGBX1010102:
+	case DRM_FORMAT_BGRX1010102:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_RGBA1010102:
+	case DRM_FORMAT_BGRA1010102:
+		*depth = 30;
+		*bpp = 32;
+		break;
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_RGBA8888:
+	case DRM_FORMAT_BGRA8888:
+		*depth = 32;
+		*bpp = 32;
+		break;
+	default:
+		DRM_DEBUG_KMS("unsupported pixel format\n");
+		*depth = 0;
+		*bpp = 0;
+		break;
+	}
+}
+EXPORT_SYMBOL(drm_fb_get_bpp_depth);
+
+/**
+ * drm_format_num_planes - get the number of planes for format
+ * @format: pixel format (DRM_FORMAT_*)
+ *
+ * RETURNS:
+ * The number of planes used by the specified pixel format.
+ */
+int drm_format_num_planes(uint32_t format)
+{
+	switch (format) {
+	case DRM_FORMAT_YUV410:
+	case DRM_FORMAT_YVU410:
+	case DRM_FORMAT_YUV411:
+	case DRM_FORMAT_YVU411:
+	case DRM_FORMAT_YUV420:
+	case DRM_FORMAT_YVU420:
+	case DRM_FORMAT_YUV422:
+	case DRM_FORMAT_YVU422:
+	case DRM_FORMAT_YUV444:
+	case DRM_FORMAT_YVU444:
+		return 3;
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
+		return 2;
+	default:
+		return 1;
+	}
+}
+EXPORT_SYMBOL(drm_format_num_planes);
+
+/**
+ * drm_format_plane_cpp - determine the bytes per pixel value
+ * @format: pixel format (DRM_FORMAT_*)
+ * @plane: plane index
+ *
+ * RETURNS:
+ * The bytes per pixel value for the specified plane.
+ */
+int drm_format_plane_cpp(uint32_t format, int plane)
+{
+	unsigned int depth;
+	int bpp;
+
+	if (plane >= drm_format_num_planes(format))
+		return 0;
+
+	switch (format) {
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+		return 2;
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
+		return plane ? 2 : 1;
+	case DRM_FORMAT_YUV410:
+	case DRM_FORMAT_YVU410:
+	case DRM_FORMAT_YUV411:
+	case DRM_FORMAT_YVU411:
+	case DRM_FORMAT_YUV420:
+	case DRM_FORMAT_YVU420:
+	case DRM_FORMAT_YUV422:
+	case DRM_FORMAT_YVU422:
+	case DRM_FORMAT_YUV444:
+	case DRM_FORMAT_YVU444:
+		return 1;
+	default:
+		drm_fb_get_bpp_depth(format, &depth, &bpp);
+		return bpp >> 3;
+	}
+}
+EXPORT_SYMBOL(drm_format_plane_cpp);
+
+/**
+ * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
+ * @format: pixel format (DRM_FORMAT_*)
+ *
+ * RETURNS:
+ * The horizontal chroma subsampling factor for the
+ * specified pixel format.
+ */
+int drm_format_horz_chroma_subsampling(uint32_t format)
+{
+	switch (format) {
+	case DRM_FORMAT_YUV411:
+	case DRM_FORMAT_YVU411:
+	case DRM_FORMAT_YUV410:
+	case DRM_FORMAT_YVU410:
+		return 4;
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_YUV422:
+	case DRM_FORMAT_YVU422:
+	case DRM_FORMAT_YUV420:
+	case DRM_FORMAT_YVU420:
+		return 2;
+	default:
+		return 1;
+	}
+}
+EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
+
+/**
+ * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
+ * @format: pixel format (DRM_FORMAT_*)
+ *
+ * RETURNS:
+ * The vertical chroma subsampling factor for the
+ * specified pixel format.
+ */
+int drm_format_vert_chroma_subsampling(uint32_t format)
+{
+	switch (format) {
+	case DRM_FORMAT_YUV410:
+	case DRM_FORMAT_YVU410:
+		return 4;
+	case DRM_FORMAT_YUV420:
+	case DRM_FORMAT_YVU420:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+		return 2;
+	default:
+		return 1;
+	}
+}
+EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
+
+/**
+ * drm_mode_config_init - initialize DRM mode_configuration structure
+ * @dev: DRM device
+ *
+ * Initialize @dev's mode_config structure, used for tracking the graphics
+ * configuration of @dev.
+ *
+ * Since this initializes the modeset locks, no locking is possible. Which is no
+ * problem, since this should happen single threaded at init time. It is the
+ * driver's problem to ensure this guarantee.
+ *
+ */
+void drm_mode_config_init(struct drm_device *dev)
+{
+	mutex_init(&dev->mode_config.mutex);
+	mutex_init(&dev->mode_config.idr_mutex);
+	mutex_init(&dev->mode_config.fb_lock);
+	INIT_LIST_HEAD(&dev->mode_config.fb_list);
+	INIT_LIST_HEAD(&dev->mode_config.crtc_list);
+	INIT_LIST_HEAD(&dev->mode_config.connector_list);
+	INIT_LIST_HEAD(&dev->mode_config.encoder_list);
+	INIT_LIST_HEAD(&dev->mode_config.property_list);
+	INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
+	INIT_LIST_HEAD(&dev->mode_config.plane_list);
+	idr_init(&dev->mode_config.crtc_idr);
+
+	drm_modeset_lock_all(dev);
+	drm_mode_create_standard_connector_properties(dev);
+	drm_modeset_unlock_all(dev);
+
+	/* Just to be sure */
+	dev->mode_config.num_fb = 0;
+	dev->mode_config.num_connector = 0;
+	dev->mode_config.num_crtc = 0;
+	dev->mode_config.num_encoder = 0;
+}
+EXPORT_SYMBOL(drm_mode_config_init);
+
+/**
+ * drm_mode_config_cleanup - free up DRM mode_config info
+ * @dev: DRM device
+ *
+ * Free up all the connectors and CRTCs associated with this DRM device, then
+ * free up the framebuffers and associated buffer objects.
+ *
+ * Note that since this /should/ happen single-threaded at driver/device
+ * teardown time, no locking is required. It's the driver's job to ensure that
+ * this guarantee actually holds true.
+ *
+ * FIXME: cleanup any dangling user buffer objects too
+ */
+void drm_mode_config_cleanup(struct drm_device *dev)
+{
+	struct drm_connector *connector, *ot;
+	struct drm_crtc *crtc, *ct;
+	struct drm_encoder *encoder, *enct;
+	struct drm_framebuffer *fb, *fbt;
+	struct drm_property *property, *pt;
+	struct drm_property_blob *blob, *bt;
+	struct drm_plane *plane, *plt;
+
+	list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
+				 head) {
+		encoder->funcs->destroy(encoder);
+	}
+
+	list_for_each_entry_safe(connector, ot,
+				 &dev->mode_config.connector_list, head) {
+		connector->funcs->destroy(connector);
+	}
+
+	list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
+				 head) {
+		drm_property_destroy(dev, property);
+	}
+
+	list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
+				 head) {
+		drm_property_destroy_blob(dev, blob);
+	}
+
+	/*
+	 * Single-threaded teardown context, so it's not required to grab the
+	 * fb_lock to protect against concurrent fb_list access. Contrary, it
+	 * would actually deadlock with the drm_framebuffer_cleanup function.
+	 *
+	 * Also, if there are any framebuffers left, that's a driver leak now,
+	 * so politely WARN about this.
+	 */
+	WARN_ON(!list_empty(&dev->mode_config.fb_list));
+	list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
+		drm_framebuffer_remove(fb);
+	}
+
+	list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
+				 head) {
+		plane->funcs->destroy(plane);
+	}
+
+	list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
+		crtc->funcs->destroy(crtc);
+	}
+
+	idr_destroy(&dev->mode_config.crtc_idr);
+}
+EXPORT_SYMBOL(drm_mode_config_cleanup);