On Fri, 2018-03-30 at 22:11 +0800, Daniel Stone wrote:
> 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.
>
Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
> Signed-off-by: Daniel Stone <daniels@xxxxxxxxxxxxx>
> Cc: CK Hu <ck.hu@xxxxxxxxxxxx>
> Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_fb.c | 38 +++++---------------------------
> drivers/gpu/drm/mediatek/mtk_drm_fb.h | 1 -
> drivers/gpu/drm/mediatek/mtk_drm_plane.c | 4 ++--
> 3 files changed, 7 insertions(+), 36 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_fb.c b/drivers/gpu/drm/mediatek/mtk_drm_fb.c
> index 0d8d506695f9..f130e37123b5 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_fb.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_fb.c
> @@ -15,6 +15,7 @@
> #include <drm/drm_crtc_helper.h>
> #include <drm/drm_fb_helper.h>
> #include <drm/drm_gem.h>
> +#include <drm/drm_gem_framebuffer_helper.h>
> #include <linux/dma-buf.h>
> #include <linux/reservation.h>
>
> @@ -30,42 +31,13 @@
> */
> struct mtk_drm_fb {
> struct drm_framebuffer base;
> - /* For now we only support a single plane */
> - struct drm_gem_object *gem_obj;
> };
>
> #define to_mtk_fb(x) container_of(x, struct mtk_drm_fb, base)
>
> -struct drm_gem_object *mtk_fb_get_gem_obj(struct drm_framebuffer *fb)
> -{
> - struct mtk_drm_fb *mtk_fb = to_mtk_fb(fb);
> -
> - return mtk_fb->gem_obj;
> -}
> -
> -static int mtk_drm_fb_create_handle(struct drm_framebuffer *fb,
> - struct drm_file *file_priv,
> - unsigned int *handle)
> -{
> - struct mtk_drm_fb *mtk_fb = to_mtk_fb(fb);
> -
> - return drm_gem_handle_create(file_priv, mtk_fb->gem_obj, handle);
> -}
> -
> -static void mtk_drm_fb_destroy(struct drm_framebuffer *fb)
> -{
> - struct mtk_drm_fb *mtk_fb = to_mtk_fb(fb);
> -
> - drm_framebuffer_cleanup(fb);
> -
> - drm_gem_object_put_unlocked(mtk_fb->gem_obj);
> -
> - kfree(mtk_fb);
> -}
> -
> static const struct drm_framebuffer_funcs mtk_drm_fb_funcs = {
> - .create_handle = mtk_drm_fb_create_handle,
> - .destroy = mtk_drm_fb_destroy,
> + .create_handle = drm_gem_fb_create_handle,
> + .destroy = drm_gem_fb_destroy,
> };
>
> static struct mtk_drm_fb *mtk_drm_framebuffer_init(struct drm_device *dev,
> @@ -84,7 +56,7 @@ static struct mtk_drm_fb *mtk_drm_framebuffer_init(struct drm_device *dev,
>
> drm_helper_mode_fill_fb_struct(dev, &mtk_fb->base, mode);
>
> - mtk_fb->gem_obj = obj;
> + mtk_fb->base.obj[0] = obj;
>
> ret = drm_framebuffer_init(dev, &mtk_fb->base, &mtk_drm_fb_funcs);
> if (ret) {
> @@ -110,7 +82,7 @@ int mtk_fb_wait(struct drm_framebuffer *fb)
> if (!fb)
> return 0;
>
> - gem = mtk_fb_get_gem_obj(fb);
> + gem = fb->obj[0];
> if (!gem || !gem->dma_buf || !gem->dma_buf->resv)
> return 0;
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_fb.h b/drivers/gpu/drm/mediatek/mtk_drm_fb.h
> index 9b2ae345a4e9..7f976b196a15 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_fb.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_fb.h
> @@ -14,7 +14,6 @@
> #ifndef MTK_DRM_FB_H
> #define MTK_DRM_FB_H
>
> -struct drm_gem_object *mtk_fb_get_gem_obj(struct drm_framebuffer *fb);
> int mtk_fb_wait(struct drm_framebuffer *fb);
> struct drm_framebuffer *mtk_drm_mode_fb_create(struct drm_device *dev,
> struct drm_file *file,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> index ac010365d88b..5370f926e63d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> @@ -95,7 +95,7 @@ static int mtk_plane_atomic_check(struct drm_plane *plane,
> if (!fb)
> return 0;
>
> - WARN_ON(!mtk_fb_get_gem_obj(fb));
> + WARN_ON(!fb->obj[0]);
>
> if (!state->crtc)
> return 0;
> @@ -124,7 +124,7 @@ static void mtk_plane_atomic_update(struct drm_plane *plane,
> if (!crtc || WARN_ON(!fb))
> return;
>
> - gem = mtk_fb_get_gem_obj(fb);
> + gem = fb->obj[0];
> mtk_gem = to_mtk_gem_obj(gem);
> addr = mtk_gem->dma_addr;
> pitch = fb->pitches[0];
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