drm/fb-cma-helper: Add function drm_fb_cma_create_with_funcs()

Add drm_fb_cma_create_with_funcs() for drivers that need to set the
dirty() callback.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1463077523-23959-3-git-send-email-noralf@tronnes.org

diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
index 378360b..172cafe 100644 (file)
--- a/drivers/gpu/drm/drm_fb_cma_helper.c
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -159,13 +159,17 @@ static struct drm_fb_cma *drm_fb_cma_alloc(struct drm_device *dev,
 }
 
 /**
- * drm_fb_cma_create() - (struct drm_mode_config_funcs *)->fb_create callback function
+ * drm_fb_cma_create_with_funcs() - helper function for the
+ *                                  &drm_mode_config_funcs ->fb_create
+ *                                  callback function
  *
- * If your hardware has special alignment or pitch requirements these should be
- * checked before calling this function.
+ * This can be used to set &drm_framebuffer_funcs for drivers that need the
+ * dirty() callback. Use drm_fb_cma_create() if you don't need to change
+ * &drm_framebuffer_funcs.
  */
-struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
-       struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd)
+struct drm_framebuffer *drm_fb_cma_create_with_funcs(struct drm_device *dev,
+       struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd,
+       const struct drm_framebuffer_funcs *funcs)
 {
        struct drm_fb_cma *fb_cma;
        struct drm_gem_cma_object *objs[4];
@@ -202,7 +206,7 @@ struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
                objs[i] = to_drm_gem_cma_obj(obj);
        }
 
-       fb_cma = drm_fb_cma_alloc(dev, mode_cmd, objs, i, &drm_fb_cma_funcs);
+       fb_cma = drm_fb_cma_alloc(dev, mode_cmd, objs, i, funcs);
        if (IS_ERR(fb_cma)) {
                ret = PTR_ERR(fb_cma);
                goto err_gem_object_unreference;
@@ -215,6 +219,21 @@ err_gem_object_unreference:
                drm_gem_object_unreference_unlocked(&objs[i]->base);
        return ERR_PTR(ret);
 }
+EXPORT_SYMBOL_GPL(drm_fb_cma_create_with_funcs);
+
+/**
+ * drm_fb_cma_create() - &drm_mode_config_funcs ->fb_create callback function
+ *
+ * If your hardware has special alignment or pitch requirements these should be
+ * checked before calling this function. Use drm_fb_cma_create_with_funcs() if
+ * you need to set &drm_framebuffer_funcs ->dirty.
+ */
+struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
+       struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+       return drm_fb_cma_create_with_funcs(dev, file_priv, mode_cmd,
+                                           &drm_fb_cma_funcs);
+}
 EXPORT_SYMBOL_GPL(drm_fb_cma_create);
 
 /**

diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
index ac38a05..fd0dde9 100644 (file)
--- a/include/drm/drm_fb_cma_helper.h
+++ b/include/drm/drm_fb_cma_helper.h
@@ -31,6 +31,9 @@ void drm_fb_cma_destroy(struct drm_framebuffer *fb);
 int drm_fb_cma_create_handle(struct drm_framebuffer *fb,
        struct drm_file *file_priv, unsigned int *handle);
 
+struct drm_framebuffer *drm_fb_cma_create_with_funcs(struct drm_device *dev,
+       struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd,
+       const struct drm_framebuffer_funcs *funcs);
 struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
        struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd);