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authorDaniel Vetter <daniel.vetter@ffwll.ch>2016-08-31 18:09:04 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-09-19 15:03:46 +0200
commitafb21ea63d815d05f6081ee3efef6772a16317eb (patch)
treed0dbbad659da899e64778ae531efc11857fd6237 /include/drm/drm_framebuffer.h
parent2cc107dc5b2f247dda9495fa488229cc187057d6 (diff)
downloadop-kernel-dev-afb21ea63d815d05f6081ee3efef6772a16317eb.zip
op-kernel-dev-afb21ea63d815d05f6081ee3efef6772a16317eb.tar.gz
drm: Move a few macros away from drm_crtc.h
Now that there's less stuff in there I noticed that I overlooked them. Sprinkle some docs over them while at it. Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20160831160913.12991-2-daniel.vetter@ffwll.ch
Diffstat (limited to 'include/drm/drm_framebuffer.h')
-rw-r--r--include/drm/drm_framebuffer.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/drm/drm_framebuffer.h b/include/drm/drm_framebuffer.h
index b2554c5..f5ae1f4 100644
--- a/include/drm/drm_framebuffer.h
+++ b/include/drm/drm_framebuffer.h
@@ -206,6 +206,8 @@ struct drm_framebuffer {
struct list_head filp_head;
};
+#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
+
int drm_framebuffer_init(struct drm_device *dev,
struct drm_framebuffer *fb,
const struct drm_framebuffer_funcs *funcs);
@@ -247,4 +249,19 @@ static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb)
{
return atomic_read(&fb->base.refcount.refcount);
}
+
+/**
+ * drm_for_each_fb - iterate over all framebuffers
+ * @fb: the loop cursor
+ * @dev: the DRM device
+ *
+ * Iterate over all framebuffers of @dev. User must hold the fb_lock from
+ * &drm_mode_config.
+ */
+#define drm_for_each_fb(fb, dev) \
+ for (WARN_ON(!mutex_is_locked(&(dev)->mode_config.fb_lock)), \
+ fb = list_first_entry(&(dev)->mode_config.fb_list, \
+ struct drm_framebuffer, head); \
+ &fb->head != (&(dev)->mode_config.fb_list); \
+ fb = list_next_entry(fb, head))
#endif
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