[PATCH v4 8/9] drm/mediatek: add third ddp path

[Stu Hsieh]

This patch create third crtc by third ddp path

Signed-off-by: Stu Hsieh <stu.hs...@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 3 +++
 drivers/gpu/drm/mediatek/mtk_drm_drv.c  | 5 +++++
 drivers/gpu/drm/mediatek/mtk_drm_drv.h  | 7 +++++--
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c 
b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 658b8dd45b83..2d6aa150a9ff 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -539,6 +539,9 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
        int ret;
        int i;
 
+       if (!path)
+               return 0;
+
        for (i = 0; i < path_len; i++) {
                enum mtk_ddp_comp_id comp_id = path[i];
                struct device_node *node;
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c 
b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 08d5d0b47bfe..3d279a299383 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -232,6 +232,11 @@ static int mtk_drm_kms_init(struct drm_device *drm)
        if (ret < 0)
                goto err_component_unbind;
 
+       ret = mtk_drm_crtc_create(drm, private->data->third_path,
+                                 private->data->third_len);
+       if (ret < 0)
+               goto err_component_unbind;
+
        /* Use OVL device for all DMA memory allocations */
        np = private->comp_node[private->data->main_path[0]] ?:
             private->comp_node[private->data->ext_path[0]];
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h 
b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index c3378c452c0a..d867e2683923 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -17,8 +17,8 @@
 #include <linux/io.h>
 #include "mtk_drm_ddp_comp.h"
 
-#define MAX_CRTC       2
-#define MAX_CONNECTOR  2
+#define MAX_CRTC       3
+#define MAX_CONNECTOR  3
 
 struct device;
 struct device_node;
@@ -33,6 +33,9 @@ struct mtk_mmsys_driver_data {
        unsigned int main_len;
        const enum mtk_ddp_comp_id *ext_path;
        unsigned int ext_len;
+       const enum mtk_ddp_comp_id *third_path;
+       unsigned int third_len;
+
        bool shadow_register;
 };
 
-- 
2.12.5

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