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drm: Move a few macros away from drm_crtc.h

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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
This commit is contained in:
Daniel Vetter
2016-08-31 18:09:04 +02:00
parent 2cc107dc5b
commit afb21ea63d
6 changed files with 64 additions and 34 deletions
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17
include/drm/drm_framebuffer.h
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@@ -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