diff options
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 20 | ||||
| -rw-r--r-- | include/drm/drm_crtc.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 080c8d361f1f..75e0beeb3793 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -47,6 +47,26 @@ #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 * diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 6920dee3a2d1..89daa77c37fc 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -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, |