The hibmc driver's struct hibmc_framebuffer stores a DRM framebuffer
with an associated GEM object. This functionality is also provided by
generic code. Switch hibmc over.

Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
Reviewed-by: Daniel Vetter <daniel.vet...@ffwll.ch>
Acked-by: Sam Ravnborg <s...@ravnborg.org>
---
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_de.c    |  4 +-
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h   | 11 ---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c   | 69 +------------------
 3 files changed, 3 insertions(+), 81 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..7fa7d4933f60 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(state->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 b34493ead30b..8eb7258b236a 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -20,11 +20,6 @@
 struct drm_device;
 struct drm_gem_object;
 
-struct hibmc_framebuffer {
-       struct drm_framebuffer fb;
-       struct drm_gem_object *obj;
-};
-
 struct hibmc_drm_private {
        /* hw */
        void __iomem   *mmio;
@@ -38,8 +33,6 @@ struct hibmc_drm_private {
        bool mode_config_initialized;
 };
 
-#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,
@@ -50,10 +43,6 @@ int hibmc_vdac_init(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 *
-hibmc_framebuffer_init(struct drm_device *dev,
-                      const struct drm_mode_fb_cmd2 *mode_cmd,
-                      struct drm_gem_object *obj);
 
 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c 
b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
index 21b684eab5c9..f6d25b85c209 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
@@ -15,6 +15,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_gem.h>
+#include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_gem_vram_helper.h>
 #include <drm/drm_print.h>
 
@@ -97,74 +98,8 @@ 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,
-};
-
-struct hibmc_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;
-       int ret;
-
-       hibmc_fb = kzalloc(sizeof(*hibmc_fb), GFP_KERNEL);
-       if (!hibmc_fb) {
-               DRM_ERROR("failed to allocate hibmc_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);
-       if (ret) {
-               DRM_ERROR("drm_framebuffer_init failed: %d\n", ret);
-               kfree(hibmc_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;
-}
-
 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,
 };
-- 
2.23.0

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