From: Daniel Stone <daniels@collabora.com>
Date: Fri, 30 Mar 2018 15:11:18 +0100
Subject: drm/rockchip: Place GEM BOs in drm_framebuffer
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Git-commit: 4c7c9a63f215da5576460b3a526e23d564de1360
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Heiko Stübner <heiko@sntech.de>
Tested-by: Heiko Stübner <heiko@sntech.de>
Cc: Sandy Huang <hjc@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-4-daniels@collabora.com

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_fb.c |   36 ++++-------------------------
 1 file changed, 6 insertions(+), 30 deletions(-)

--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -18,6 +18,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
 
 #include "rockchip_drm_drv.h"
 #include "rockchip_drm_fb.h"
@@ -28,40 +29,15 @@
 
 struct rockchip_drm_fb {
 	struct drm_framebuffer fb;
-	struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER];
 };
 
 struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb,
 					       unsigned int plane)
 {
-	struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb);
-
 	if (plane >= ROCKCHIP_MAX_FB_BUFFER)
 		return NULL;
 
-	return rk_fb->obj[plane];
-}
-
-static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
-{
-	struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
-	int i;
-
-	for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++)
-		drm_gem_object_put_unlocked(rockchip_fb->obj[i]);
-
-	drm_framebuffer_cleanup(fb);
-	kfree(rockchip_fb);
-}
-
-static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb,
-					 struct drm_file *file_priv,
-					 unsigned int *handle)
-{
-	struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
-
-	return drm_gem_handle_create(file_priv,
-				     rockchip_fb->obj[0], handle);
+	return fb->obj[plane];
 }
 
 static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
@@ -75,9 +51,9 @@ static int rockchip_drm_fb_dirty(struct
 }
 
 static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
-	.destroy	= rockchip_drm_fb_destroy,
-	.create_handle	= rockchip_drm_fb_create_handle,
-	.dirty		= rockchip_drm_fb_dirty,
+	.destroy       = drm_gem_fb_destroy,
+	.create_handle = drm_gem_fb_create_handle,
+	.dirty	       = rockchip_drm_fb_dirty,
 };
 
 static struct rockchip_drm_fb *
@@ -95,7 +71,7 @@ rockchip_fb_alloc(struct drm_device *dev
 	drm_helper_mode_fill_fb_struct(dev, &rockchip_fb->fb, mode_cmd);
 
 	for (i = 0; i < num_planes; i++)
-		rockchip_fb->obj[i] = obj[i];
+		rockchip_fb->fb.obj[i] = obj[i];
 
 	ret = drm_framebuffer_init(dev, &rockchip_fb->fb,
 				   &rockchip_drm_fb_funcs);