drm/mediatek: add DPI1 support for mutex

This patch add the DPI1 support for mutex
Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drivers/gpu/drm/mediatek/mtk_drm_ddp.c

@@ -76,6 +76,7 @@
 #define MUTEX_SOF_DSI0			1
 #define MUTEX_SOF_DSI1			2
 #define MUTEX_SOF_DPI0			3
+#define MUTEX_SOF_DPI1			4
 
 #define OVL0_MOUT_EN_COLOR0		0x1
 #define OD_MOUT_EN_RDMA0		0x1
@@ -385,6 +386,9 @@ void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
 	case DDP_COMPONENT_DPI0:
 		reg = MUTEX_SOF_DPI0;
 		break;
+	case DDP_COMPONENT_DPI1:
+		reg = MUTEX_SOF_DPI1;
+		break;
 	default:
 		if (ddp->mutex_mod[id] < 32) {
 			offset = DISP_REG_MUTEX_MOD(mutex->id);
@@ -417,6 +421,7 @@ void mtk_disp_mutex_remove_comp(struct mtk_disp_mutex *mutex,
 	case DDP_COMPONENT_DSI0:
 	case DDP_COMPONENT_DSI1:
 	case DDP_COMPONENT_DPI0:
+	case DDP_COMPONENT_DPI1:
 		writel_relaxed(MUTEX_SOF_SINGLE_MODE,
 			       ddp->regs + DISP_REG_MUTEX_SOF(mutex->id));
 		break;