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drm/vram-helpers: Set plane fence for display update

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Calling the VRAM helper's prepare_fb() helper now sets the plane's
fence object. This will be useful for PRIME support. VRAM helpers
don't support buffer sharing ATM, so for now there are no drivers
requiring this change.

v2:
	* removed a TODO comment about buffer synchronization

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200331092740.29282-1-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2020-03-31 11:27:40 +02:00
parent 8e334c1d89
commit d7b001d852
1 changed files with 8 additions and 3 deletions
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11
drivers/gpu/drm/drm_gem_vram_helper.c
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@ -5,6 +5,7 @@
#include <drm/drm_drv.h> #include <drm/drm_drv.h>
#include <drm/drm_file.h> #include <drm/drm_file.h>
#include <drm/drm_framebuffer.h> #include <drm/drm_framebuffer.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_gem_ttm_helper.h> #include <drm/drm_gem_ttm_helper.h>
#include <drm/drm_gem_vram_helper.h> #include <drm/drm_gem_vram_helper.h>
#include <drm/drm_mode.h> #include <drm/drm_mode.h>
@ -670,9 +671,9 @@ EXPORT_SYMBOL(drm_gem_vram_driver_dumb_mmap_offset);
* @plane: a DRM plane * @plane: a DRM plane
* @new_state: the plane's new state * @new_state: the plane's new state
* *
* During plane updates, this function pins the GEM VRAM * During plane updates, this function sets the plane's fence and
* objects of the plane's new framebuffer to VRAM. Call * pins the GEM VRAM objects of the plane's new framebuffer to VRAM.
* drm_gem_vram_plane_helper_cleanup_fb() to unpin them. * Call drm_gem_vram_plane_helper_cleanup_fb() to unpin them.
* *
* Returns: * Returns:
* 0 on success, or * 0 on success, or
@ -698,6 +699,10 @@ drm_gem_vram_plane_helper_prepare_fb(struct drm_plane *plane,
goto err_drm_gem_vram_unpin; goto err_drm_gem_vram_unpin;
} }
ret = drm_gem_fb_prepare_fb(plane, new_state);
if (ret)
goto err_drm_gem_vram_unpin;
return 0; return 0;
err_drm_gem_vram_unpin: err_drm_gem_vram_unpin: