drm/exynos: fix to set pipe of crtc

It is enough to set pipe of crtc to manager only when do mode_set of
crtc.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_crtc.c

@@ -67,8 +67,7 @@ static void exynos_drm_crtc_apply(struct drm_crtc *crtc)
 
 	exynos_drm_fn_encoder(crtc, overlay,
 			exynos_drm_encoder_crtc_mode_set);
-	exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
-			exynos_drm_encoder_crtc_commit);
+	exynos_drm_fn_encoder(crtc, NULL, exynos_drm_encoder_crtc_commit);
 }
 
 int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay,
@@ -231,8 +230,7 @@ static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
 					exynos_drm_encoder_dpms_from_crtc);
 	}
 
-	exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
-			exynos_drm_encoder_crtc_commit);
+	exynos_drm_fn_encoder(crtc, NULL, exynos_drm_encoder_crtc_commit);
 }
 
 static bool
@@ -253,6 +251,7 @@ exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
 {
 	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
 	struct exynos_drm_overlay *overlay = &exynos_crtc->overlay;
+	int pipe = exynos_crtc->pipe;
 	int ret;
 
 	DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -268,6 +267,7 @@ exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
 		return ret;
 
 	exynos_drm_fn_encoder(crtc, overlay, exynos_drm_encoder_crtc_mode_set);
+	exynos_drm_fn_encoder(crtc, &pipe, exynos_drm_encoder_crtc_pipe);
 
 	return 0;
 }

drivers/gpu/drm/exynos/exynos_drm_encoder.c

@@ -30,7 +30,6 @@
 #include "drm_crtc_helper.h"
 
 #include "exynos_drm_drv.h"
-#include "exynos_drm_crtc.h"
 #include "exynos_drm_encoder.h"
 
 #define to_exynos_encoder(x)	container_of(x, struct exynos_drm_encoder,\
@@ -303,8 +302,8 @@ void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data)
 	struct exynos_drm_manager_ops *manager_ops = manager->ops;
 	int crtc = *(int *)data;
 
-	if (manager->pipe == -1)
-		manager->pipe = crtc;
+	if (manager->pipe != crtc)
+		return;
 
 	if (manager_ops->enable_vblank)
 		manager_ops->enable_vblank(manager->dev);
@@ -317,8 +316,8 @@ void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data)
 	struct exynos_drm_manager_ops *manager_ops = manager->ops;
 	int crtc = *(int *)data;
 
-	if (manager->pipe == -1)
-		manager->pipe = crtc;
+	if (manager->pipe != crtc)
+		return;
 
 	if (manager_ops->disable_vblank)
 		manager_ops->disable_vblank(manager->dev);
@@ -341,19 +340,10 @@ void exynos_drm_encoder_crtc_plane_commit(struct drm_encoder *encoder,
 
 void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data)
 {
-	struct exynos_drm_manager *manager =
-		to_exynos_encoder(encoder)->manager;
-	int crtc = *(int *)data;
 	int zpos = DEFAULT_ZPOS;
 
 	DRM_DEBUG_KMS("%s\n", __FILE__);
 
-	/*
-	 * when crtc is detached from encoder, this pipe is used
-	 * to select manager operation
-	 */
-	manager->pipe = crtc;
-
 	exynos_drm_encoder_crtc_plane_commit(encoder, &zpos);
 }
 
@@ -429,3 +419,18 @@ void exynos_drm_encoder_crtc_disable(struct drm_encoder *encoder, void *data)
 	if (overlay_ops && overlay_ops->disable)
 		overlay_ops->disable(manager->dev, zpos);
 }
+
+void exynos_drm_encoder_crtc_pipe(struct drm_encoder *encoder, void *data)
+{
+	struct exynos_drm_manager *manager =
+		to_exynos_encoder(encoder)->manager;
+	int pipe = *(int *)data;
+
+	DRM_DEBUG_KMS("%s\n", __FILE__);
+
+	/*
+	 * when crtc is detached from encoder, this pipe is used
+	 * to select manager operation
+	 */
+	manager->pipe = pipe;
+}

drivers/gpu/drm/exynos/exynos_drm_encoder.h

@@ -48,5 +48,6 @@ void exynos_drm_encoder_dpms_from_crtc(struct drm_encoder *encoder,
 void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data);
 void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data);
 void exynos_drm_encoder_crtc_disable(struct drm_encoder *encoder, void *data);
+void exynos_drm_encoder_crtc_pipe(struct drm_encoder *encoder, void *data);
 
 #endif