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authorArchit Taneja <architt@codeaurora.org>2015-07-22 14:57:56 +0530
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-08-06 14:12:54 +0200
commitb8017d6c33be9862505a9154e302c4b00cbfca43 (patch)
treefd5d3f30f6d57d7b86acaa8e541bba5981fe0a32 /include/drm
parentc201d00f4a4c004482aec7de1bffdfe2d85e65cf (diff)
downloadlinux-linaro-stable-b8017d6c33be9862505a9154e302c4b00cbfca43.tar.gz
drm/fb_helper: Add drm_fb_helper functions to manage fb_info creation
Every drm driver calls framebuffer_alloc, fb_alloc_cmap, unregister_framebuffer, fb_dealloc_cmap and framebuffer_release in order to emulate fbdev support. Create drm_fb_helper functions that perform the above operations. This is part of an effort to prevent drm drivers from calling fbdev functions directly. It also removes repetitive code from drivers. There are some drivers that call alloc_apertures after framebuffer_alloc and some that don't. Make the helper always call alloc_apertures. This would make certain drivers allocate memory for apertures but not use them. Since it's a small amount of memory, it shouldn't be an issue. v2: - Added kerneldocs - Added a check for non-NULL fb_helper before proceeding. This will make the helpers work when we have a module param for fbdev emulation Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drm_fb_helper.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 0dfd94def593..2ee4ec53efc1 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -136,6 +136,10 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
struct fb_info *info);
bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
+
+struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper);
+void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
+void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper);
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
uint32_t fb_width, uint32_t fb_height);
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,