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drm: Add GEM backed framebuffer library

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This library provides helpers for drivers that don't subclass
drm_framebuffer and are backed by drm_gem_object. The code is
taken from drm_fb_cma_helper.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-2-git-send-email-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes
2017-08-13 15:31:44 +02:00
parent d956e1293b
commit 4c3dbb2c31
5 changed files with 337 additions and 1 deletions
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37
include/drm/drm_gem_framebuffer_helper.h Normal file
View File

@@ -0,0 +1,37 @@
#ifndef __DRM_GEM_FB_HELPER_H__
#define __DRM_GEM_FB_HELPER_H__
struct drm_device;
struct drm_file;
struct drm_fb_helper_surface_size;
struct drm_framebuffer;
struct drm_framebuffer_funcs;
struct drm_gem_object;
struct drm_mode_fb_cmd2;
struct drm_plane;
struct drm_plane_state;
struct drm_gem_object *drm_gem_fb_get_obj(struct drm_framebuffer *fb,
unsigned int plane);
void drm_gem_fb_destroy(struct drm_framebuffer *fb);
int drm_gem_fb_create_handle(struct drm_framebuffer *fb, struct drm_file *file,
unsigned int *handle);
struct drm_framebuffer *
drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file,
const struct drm_mode_fb_cmd2 *mode_cmd,
const struct drm_framebuffer_funcs *funcs);
struct drm_framebuffer *
drm_gem_fb_create(struct drm_device *dev, struct drm_file *file,
const struct drm_mode_fb_cmd2 *mode_cmd);
int drm_gem_fb_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *state);
struct drm_framebuffer *
drm_gem_fbdev_fb_create(struct drm_device *dev,
struct drm_fb_helper_surface_size *sizes,
unsigned int pitch_align, struct drm_gem_object *obj,
const struct drm_framebuffer_funcs *funcs);
#endif