[PATCH 7/8] drm/hibmc: Use drm_gem_fb_create

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Again we could delete a lot more if we'd switch over to the generic
fbdev stuff.

Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_de.c    |  4 +-
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h   | 11 +---
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c |  5 +-
 drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c   | 62 +++++--------------
 4 files changed, 19 insertions(+), 63 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
index 6527a97f68a3..2d0920ec4554 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
@@ -99,14 +99,12 @@ static void hibmc_plane_atomic_update(struct drm_plane *plane,
 	s64 gpu_addr = 0;
 	unsigned int line_l;
 	struct hibmc_drm_private *priv = plane->dev->dev_private;
-	struct hibmc_framebuffer *hibmc_fb;
 	struct drm_gem_vram_object *gbo;
 
 	if (!state->fb)
 		return;
 
-	hibmc_fb = to_hibmc_framebuffer(state->fb);
-	gbo = drm_gem_vram_of_gem(hibmc_fb->obj);
+	gbo = drm_gem_vram_of_gem(fb->obj[0]);
 
 	gpu_addr = drm_gem_vram_offset(gbo);
 	if (WARN_ON_ONCE(gpu_addr < 0))
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index e58ecd7edcf8..ab5b4a4a2095 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -20,14 +20,9 @@
 struct drm_device;
 struct drm_gem_object;
 
-struct hibmc_framebuffer {
-	struct drm_framebuffer fb;
-	struct drm_gem_object *obj;
-};
-
 struct hibmc_fbdev {
 	struct drm_fb_helper helper; /* must be first */
-	struct hibmc_framebuffer *fb;
+	struct drm_framebuffer *fb;
 	int size;
 };
 
@@ -47,8 +42,6 @@ struct hibmc_drm_private {
 	struct hibmc_fbdev *fbdev;
 };
 
-#define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
-
 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
 			  unsigned int power_mode);
 void hibmc_set_current_gate(struct hibmc_drm_private *priv,
@@ -61,7 +54,7 @@ void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
 
 int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
 		     struct drm_gem_object **obj);
-struct hibmc_framebuffer *
+struct drm_framebuffer *
 hibmc_framebuffer_init(struct drm_device *dev,
 		       const struct drm_mode_fb_cmd2 *mode_cmd,
 		       struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c
index b4c1cea051e8..446aeedc9e29 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c
@@ -141,15 +141,14 @@ static int hibmc_drm_fb_create(struct drm_fb_helper *helper,
 
 static void hibmc_fbdev_destroy(struct hibmc_fbdev *fbdev)
 {
-	struct hibmc_framebuffer *gfb = fbdev->fb;
 	struct drm_fb_helper *fbh = &fbdev->helper;
 
 	drm_fb_helper_unregister_fbi(fbh);
 
 	drm_fb_helper_fini(fbh);
 
-	if (gfb)
-		drm_framebuffer_put(&gfb->fb);
+	if (fbdev->fb)
+		drm_framebuffer_put(fbdev->fb);
 }
 
 static const struct drm_fb_helper_funcs hibmc_fbdev_helper_funcs = {
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
index 21b684eab5c9..386033b0d3a2 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
@@ -16,6 +16,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_vram_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_print.h>
 
 #include "hibmc_drm_drv.h"
@@ -97,74 +98,39 @@ int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
 	return 0;
 }
 
-static void hibmc_user_framebuffer_destroy(struct drm_framebuffer *fb)
-{
-	struct hibmc_framebuffer *hibmc_fb = to_hibmc_framebuffer(fb);
-
-	drm_gem_object_put_unlocked(hibmc_fb->obj);
-	drm_framebuffer_cleanup(fb);
-	kfree(hibmc_fb);
-}
-
 static const struct drm_framebuffer_funcs hibmc_fb_funcs = {
-	.destroy = hibmc_user_framebuffer_destroy,
+	.destroy	= drm_gem_fb_destroy,
+	.create_handle	= drm_gem_fb_create_handle,
 };
 
-struct hibmc_framebuffer *
+struct drm_framebuffer *
 hibmc_framebuffer_init(struct drm_device *dev,
 		       const struct drm_mode_fb_cmd2 *mode_cmd,
 		       struct drm_gem_object *obj)
 {
-	struct hibmc_framebuffer *hibmc_fb;
+	struct drm_framebuffer *fb;
 	int ret;
 
-	hibmc_fb = kzalloc(sizeof(*hibmc_fb), GFP_KERNEL);
-	if (!hibmc_fb) {
-		DRM_ERROR("failed to allocate hibmc_fb\n");
+	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+	if (!fb) {
+		DRM_ERROR("failed to allocate fb\n");
 		return ERR_PTR(-ENOMEM);
 	}
 
-	drm_helper_mode_fill_fb_struct(dev, &hibmc_fb->fb, mode_cmd);
-	hibmc_fb->obj = obj;
-	ret = drm_framebuffer_init(dev, &hibmc_fb->fb, &hibmc_fb_funcs);
+	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
+	fb->obj[0] = obj;
+	ret = drm_framebuffer_init(dev, fb, &hibmc_fb_funcs);
 	if (ret) {
 		DRM_ERROR("drm_framebuffer_init failed: %d\n", ret);
-		kfree(hibmc_fb);
+		kfree(fb);
 		return ERR_PTR(ret);
 	}
 
-	return hibmc_fb;
-}
-
-static struct drm_framebuffer *
-hibmc_user_framebuffer_create(struct drm_device *dev,
-			      struct drm_file *filp,
-			      const struct drm_mode_fb_cmd2 *mode_cmd)
-{
-	struct drm_gem_object *obj;
-	struct hibmc_framebuffer *hibmc_fb;
-
-	DRM_DEBUG_DRIVER("%dx%d, format %c%c%c%c\n",
-			 mode_cmd->width, mode_cmd->height,
-			 (mode_cmd->pixel_format) & 0xff,
-			 (mode_cmd->pixel_format >> 8)  & 0xff,
-			 (mode_cmd->pixel_format >> 16) & 0xff,
-			 (mode_cmd->pixel_format >> 24) & 0xff);
-
-	obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]);
-	if (!obj)
-		return ERR_PTR(-ENOENT);
-
-	hibmc_fb = hibmc_framebuffer_init(dev, mode_cmd, obj);
-	if (IS_ERR(hibmc_fb)) {
-		drm_gem_object_put_unlocked(obj);
-		return ERR_PTR((long)hibmc_fb);
-	}
-	return &hibmc_fb->fb;
+	return fb;
 }
 
 const struct drm_mode_config_funcs hibmc_mode_funcs = {
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
-	.fb_create = hibmc_user_framebuffer_create,
+	.fb_create = drm_gem_fb_create,
 };
-- 
2.24.0

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