drm/exynos: add helper to get crtc from pipe

Andrzej Hajda · daeinki · commit 2701932899e9 · 2016-04-30T01:04:22.000+09:00
The helper abstracts out conversion from pipeline
to crtc. Currently it is used in two places, but
there will be more uses in next patches.

Signed-off-by: Andrzej Hajda &lt;a.hajda@samsung.com&gt;
Signed-off-by: Inki Dae &lt;inki.dae@samsung.com&gt;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -157,9 +157,8 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 
 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
-	struct exynos_drm_private *private = dev->dev_private;
-	struct exynos_drm_crtc *exynos_crtc =
-		to_exynos_crtc(private->crtc[pipe]);
+	struct exynos_drm_crtc *exynos_crtc = exynos_drm_crtc_from_pipe(dev,
+									pipe);
 
 	if (exynos_crtc->ops->enable_vblank)
 		return exynos_crtc->ops->enable_vblank(exynos_crtc);
@@ -169,9 +168,8 @@ int exynos_drm_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
 
 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
-	struct exynos_drm_private *private = dev->dev_private;
-	struct exynos_drm_crtc *exynos_crtc =
-		to_exynos_crtc(private->crtc[pipe]);
+	struct exynos_drm_crtc *exynos_crtc = exynos_drm_crtc_from_pipe(dev,
+									pipe);
 
 	if (exynos_crtc->ops->disable_vblank)
 		exynos_crtc->ops->disable_vblank(exynos_crtc);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -232,6 +232,14 @@ struct exynos_drm_private {
 	wait_queue_head_t	wait;
 };
 
+static inline struct exynos_drm_crtc *
+exynos_drm_crtc_from_pipe(struct drm_device *dev, int pipe)
+{
+	struct exynos_drm_private *private = dev->dev_private;
+
+	return to_exynos_crtc(private->crtc[pipe]);
+}
+
 static inline struct device *to_dma_dev(struct drm_device *dev)
 {
 	struct exynos_drm_private *priv = dev->dev_private;
