[PATCH v8 2/8] drm/mediatevk: Add crtc path enum for all_drm_priv array

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Add mtk_drm_crtc_path enum for eatch display path.

Instead of using array index of all_drm_priv in mtk_drm_kms_init(),
mtk_drm_crtc_path enum can make more readable.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
---
 drivers/gpu/drm/mediatek/mtk_drm_drv.c | 6 +++---
 drivers/gpu/drm/mediatek/mtk_drm_drv.h | 8 +++++++-
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 249c9fd6347e..89a38561ba27 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -465,21 +465,21 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 		for (j = 0; j < private->data->mmsys_dev_num; j++) {
 			priv_n = private->all_drm_private[j];
 
-			if (i == 0 && priv_n->data->main_len) {
+			if (i == CRTC_MAIN && priv_n->data->main_len) {
 				ret = mtk_drm_crtc_create(drm, priv_n->data->main_path,
 							  priv_n->data->main_len, j);
 				if (ret)
 					goto err_component_unbind;
 
 				continue;
-			} else if (i == 1 && priv_n->data->ext_len) {
+			} else if (i == CRTC_EXT && priv_n->data->ext_len) {
 				ret = mtk_drm_crtc_create(drm, priv_n->data->ext_path,
 							  priv_n->data->ext_len, j);
 				if (ret)
 					goto err_component_unbind;
 
 				continue;
-			} else if (i == 2 && priv_n->data->third_len) {
+			} else if (i == CRTC_THIRD && priv_n->data->third_len) {
 				ret = mtk_drm_crtc_create(drm, priv_n->data->third_path,
 							  priv_n->data->third_len, j);
 				if (ret)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index eb2fd45941f0..f4de8bb27685 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -9,11 +9,17 @@
 #include <linux/io.h>
 #include "mtk_drm_ddp_comp.h"
 
-#define MAX_CRTC	3
 #define MAX_CONNECTOR	2
 #define DDP_COMPONENT_DRM_OVL_ADAPTOR (DDP_COMPONENT_ID_MAX + 1)
 #define DDP_COMPONENT_DRM_ID_MAX (DDP_COMPONENT_DRM_OVL_ADAPTOR + 1)
 
+enum mtk_drm_crtc_path {
+	CRTC_MAIN,
+	CRTC_EXT,
+	CRTC_THIRD,
+	MAX_CRTC,
+};
+
 struct device;
 struct device_node;
 struct drm_crtc;
-- 
2.18.0




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