drm/gem: Provide drm_gem_fb_{vmap,vunmap}()

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Move framebuffer vmap code from shadow-buffered plane state into the new
interfaces drm_gem_fb_vmap() and drm_gem_fb_vunmap(). These functions
provide mappings of a framebuffer's BOs into kernel address space. No
functional changes.

v4:
	* remove duplicated blank line
v2:
	* using [static N] for array parameters enables compile-time checks
	* include <drm/drm_fourcc.h> for DRM_FORMAT_MAX_PLANES (kernel
	  test robot)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210730183511.20080-3-tzimmermann@suse.de

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This commit is contained in:

Thomas Zimmermann 2021-07-30 20:35:08 +02:00

parent 279cc2e954

commit f6424ecdb3

3 changed files with 80 additions and 33 deletions

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6

include/drm/drm_gem_framebuffer_helper.h

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