Implementing vmap() and vunmap() of struct drm_gem_object_funcs is
required by generic fbdev emulation. Supporting free() is easy as
well. More udl-specific interfaces can probably be replaced by GEM
object functions in later patches.
Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
---
drivers/gpu/drm/udl/udl_gem.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
index 3ea0cd9ae2d6..6ca097c270d6 100644
--- a/drivers/gpu/drm/udl/udl_gem.c
+++ b/drivers/gpu/drm/udl/udl_gem.c
@@ -11,6 +11,8 @@
#include "udl_drv.h"
+static const struct drm_gem_object_funcs udl_gem_object_funcs;
+
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size)
{
@@ -25,6 +27,7 @@ struct udl_gem_object *udl_gem_alloc_object(struct drm_device
*dev,
return NULL;
}
+ obj->base.funcs = &udl_gem_object_funcs;
obj->flags = UDL_BO_CACHEABLE;
return obj;
}
@@ -230,3 +233,34 @@ int udl_gem_mmap(struct drm_file *file, struct drm_device
*dev,
mutex_unlock(&udl->gem_lock);
return ret;
}
+
+/*
+ * Helpers for struct drm_gem_object_funcs
+ */
+
+static void udl_gem_object_free(struct drm_gem_object *obj)
+{
+ udl_gem_free_object(obj);
+}
+
+static void *udl_gem_object_vmap(struct drm_gem_object *obj)
+{
+ struct udl_gem_object *uobj = to_udl_bo(obj);
+ int ret;
+
+ ret = udl_gem_vmap(uobj);
+ if (ret)
+ return ERR_PTR(ret);
+ return uobj->vmapping;
+}
+
+static void udl_gem_object_vunmap(struct drm_gem_object *obj, void *vaddr)
+{
+ return udl_gem_vunmap(to_udl_bo(obj));
+}
+
+static const struct drm_gem_object_funcs udl_gem_object_funcs = {
+ .free = udl_gem_object_free,
+ .vmap = udl_gem_object_vmap,
+ .vunmap = udl_gem_object_vunmap,
+};
--
2.23.0
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