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Commit 6d1b81d8 authored by Shawn Guo's avatar Shawn Guo Committed by Daniel Vetter
Browse files

drm: add crtc helper drm_crtc_from_index() 



It adds a crtc helper drm_crtc_from_index() to find the registered CRTC
with a given index, just like drm_plane_from_index().

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1483015290-16660-2-git-send-email-shawnguo@kernel.org
parent b5c3714f

drivers/gpu/drm/drm_crtc.c

+20 −0
Original line number Diff line number Diff line
@@ -46,6 +46,26 @@ 
#include "drm_crtc_internal.h"

#include "drm_internal.h"



/**

 * drm_crtc_from_index - find the registered CRTC at an index

 * @dev: DRM device

 * @idx: index of registered CRTC to find for

 *

 * Given a CRTC index, return the registered CRTC from DRM device's

 * list of CRTCs with matching index.

 */

struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx)

{

	struct drm_crtc *crtc;



	drm_for_each_crtc(crtc, dev)

		if (idx == crtc->index)

			return crtc;



	return NULL;

}

EXPORT_SYMBOL(drm_crtc_from_index);



/**

 * drm_crtc_force_disable - Forcibly turn off a CRTC

 * @crtc: CRTC to turn off

include/drm/drm_crtc.h

+1 −0
Original line number Diff line number Diff line
@@ -822,6 +822,7 @@ int drm_crtc_force_disable(struct drm_crtc *crtc); 
int drm_crtc_force_disable_all(struct drm_device *dev);



int drm_mode_set_config_internal(struct drm_mode_set *set);

struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx);



/* Helpers */

static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,