Actually, setting the registers for routing, use multiple 'if-else' for 
different
routes, but this code would be more and more complicated while we
support more and more SoCs. Change that and use a function call per SoC so the
code will be more portable and clear.

Signed-off-by: Yongqiang Niu <yongqiang....@mediatek.com>
---
 drivers/soc/mediatek/mmsys/Makefile       |   3 +-
 drivers/soc/mediatek/mmsys/mt2701-mmsys.c | 233 +++++++++++++++++++++++++++++
 drivers/soc/mediatek/mmsys/mtk-mmsys.c    | 241 +++---------------------------
 include/linux/soc/mediatek/mtk-mmsys.h    |  14 ++
 4 files changed, 268 insertions(+), 223 deletions(-)
 create mode 100644 drivers/soc/mediatek/mmsys/mt2701-mmsys.c

diff --git a/drivers/soc/mediatek/mmsys/Makefile 
b/drivers/soc/mediatek/mmsys/Makefile
index 5d976d7..ac03025 100644
--- a/drivers/soc/mediatek/mmsys/Makefile
+++ b/drivers/soc/mediatek/mmsys/Makefile
@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o
\ No newline at end of file
+obj-$(CONFIG_MTK_MMSYS) += mt2701-mmsys.o
+obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o
diff --git a/drivers/soc/mediatek/mmsys/mt2701-mmsys.c 
b/drivers/soc/mediatek/mmsys/mt2701-mmsys.c
new file mode 100644
index 0000000..40576d3
--- /dev/null
+++ b/drivers/soc/mediatek/mmsys/mt2701-mmsys.c
@@ -0,0 +1,233 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020 MediaTek Inc.
+ */
+
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
+
+#define DISP_REG_CONFIG_DISP_OVL0_MOUT_EN      0x040
+#define DISP_REG_CONFIG_DISP_OVL1_MOUT_EN      0x044
+#define DISP_REG_CONFIG_DISP_OD_MOUT_EN                0x048
+#define DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN     0x04c
+#define DISP_REG_CONFIG_DISP_UFOE_MOUT_EN      0x050
+#define DISP_REG_CONFIG_DISP_COLOR0_SEL_IN     0x084
+#define DISP_REG_CONFIG_DISP_COLOR1_SEL_IN     0x088
+#define DISP_REG_CONFIG_DSIE_SEL_IN            0x0a4
+#define DISP_REG_CONFIG_DSIO_SEL_IN            0x0a8
+#define DISP_REG_CONFIG_DPI_SEL_IN             0x0ac
+#define DISP_REG_CONFIG_DISP_RDMA2_SOUT                0x0b8
+#define DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN     0x0c4
+#define DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN     0x0c8
+#define DISP_REG_CONFIG_MMSYS_CG_CON0          0x100
+
+#define DISP_REG_CONFIG_DISP_OVL_MOUT_EN       0x030
+#define DISP_REG_CONFIG_OUT_SEL                        0x04c
+#define DISP_REG_CONFIG_DSI_SEL                        0x050
+#define DISP_REG_CONFIG_DPI_SEL                        0x064
+
+#define OVL0_MOUT_EN_COLOR0                    0x1
+#define OD_MOUT_EN_RDMA0                       0x1
+#define OD1_MOUT_EN_RDMA1                      BIT(16)
+#define UFOE_MOUT_EN_DSI0                      0x1
+#define COLOR0_SEL_IN_OVL0                     0x1
+#define OVL1_MOUT_EN_COLOR1                    0x1
+#define GAMMA_MOUT_EN_RDMA1                    0x1
+#define RDMA0_SOUT_DPI0                                0x2
+#define RDMA0_SOUT_DPI1                                0x3
+#define RDMA0_SOUT_DSI1                                0x1
+#define RDMA0_SOUT_DSI2                                0x4
+#define RDMA0_SOUT_DSI3                                0x5
+#define RDMA1_SOUT_DPI0                                0x2
+#define RDMA1_SOUT_DPI1                                0x3
+#define RDMA1_SOUT_DSI1                                0x1
+#define RDMA1_SOUT_DSI2                                0x4
+#define RDMA1_SOUT_DSI3                                0x5
+#define RDMA2_SOUT_DPI0                                0x2
+#define RDMA2_SOUT_DPI1                                0x3
+#define RDMA2_SOUT_DSI1                                0x1
+#define RDMA2_SOUT_DSI2                                0x4
+#define RDMA2_SOUT_DSI3                                0x5
+#define DPI0_SEL_IN_RDMA1                      0x1
+#define DPI0_SEL_IN_RDMA2                      0x3
+#define DPI1_SEL_IN_RDMA1                      (0x1 << 8)
+#define DPI1_SEL_IN_RDMA2                      (0x3 << 8)
+#define DSI0_SEL_IN_RDMA1                      0x1
+#define DSI0_SEL_IN_RDMA2                      0x4
+#define DSI1_SEL_IN_RDMA1                      0x1
+#define DSI1_SEL_IN_RDMA2                      0x4
+#define DSI2_SEL_IN_RDMA1                      (0x1 << 16)
+#define DSI2_SEL_IN_RDMA2                      (0x4 << 16)
+#define DSI3_SEL_IN_RDMA1                      (0x1 << 16)
+#define DSI3_SEL_IN_RDMA2                      (0x4 << 16)
+#define COLOR1_SEL_IN_OVL1                     0x1
+
+#define OVL_MOUT_EN_RDMA                       0x1
+#define BLS_TO_DSI_RDMA1_TO_DPI1               0x8
+#define BLS_TO_DPI_RDMA1_TO_DSI                        0x2
+#define DSI_SEL_IN_BLS                         0x0
+#define DPI_SEL_IN_BLS                         0x0
+#define DSI_SEL_IN_RDMA                                0x1
+
+static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur,
+                                         enum mtk_ddp_comp_id next,
+                                         unsigned int *addr)
+{
+       unsigned int value;
+
+       if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
+               *addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN;
+               value = OVL0_MOUT_EN_COLOR0;
+       } else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) {
+               *addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN;
+               value = OVL_MOUT_EN_RDMA;
+       } else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) {
+               *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
+               value = OD_MOUT_EN_RDMA0;
+       } else if (cur == DDP_COMPONENT_UFOE && next == DDP_COMPONENT_DSI0) {
+               *addr = DISP_REG_CONFIG_DISP_UFOE_MOUT_EN;
+               value = UFOE_MOUT_EN_DSI0;
+       } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
+               *addr = DISP_REG_CONFIG_DISP_OVL1_MOUT_EN;
+               value = OVL1_MOUT_EN_COLOR1;
+       } else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) {
+               *addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN;
+               value = GAMMA_MOUT_EN_RDMA1;
+       } else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) {
+               *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
+               value = OD1_MOUT_EN_RDMA1;
+       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI0) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
+               value = RDMA0_SOUT_DPI0;
+       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI1) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
+               value = RDMA0_SOUT_DPI1;
+       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI1) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
+               value = RDMA0_SOUT_DSI1;
+       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI2) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
+               value = RDMA0_SOUT_DSI2;
+       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI3) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
+               value = RDMA0_SOUT_DSI3;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
+               value = RDMA1_SOUT_DSI1;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
+               value = RDMA1_SOUT_DSI2;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
+               value = RDMA1_SOUT_DSI3;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
+               value = RDMA1_SOUT_DPI0;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
+               value = RDMA1_SOUT_DPI1;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
+               value = RDMA2_SOUT_DPI0;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
+               value = RDMA2_SOUT_DPI1;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
+               value = RDMA2_SOUT_DSI1;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
+               value = RDMA2_SOUT_DSI2;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
+               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
+               value = RDMA2_SOUT_DSI3;
+       } else {
+               value = 0;
+       }
+
+       return value;
+}
+
+static unsigned int mtk_mmsys_ddp_sel_in(enum mtk_ddp_comp_id cur,
+                                        enum mtk_ddp_comp_id next,
+                                        unsigned int *addr)
+{
+       unsigned int value;
+
+       if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
+               *addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN;
+               value = COLOR0_SEL_IN_OVL0;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
+               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
+               value = DPI0_SEL_IN_RDMA1;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
+               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
+               value = DPI1_SEL_IN_RDMA1;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
+               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
+               value = DSI0_SEL_IN_RDMA1;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
+               *addr = DISP_REG_CONFIG_DSIO_SEL_IN;
+               value = DSI1_SEL_IN_RDMA1;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
+               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
+               value = DSI2_SEL_IN_RDMA1;
+       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
+               *addr = DISP_REG_CONFIG_DSIO_SEL_IN;
+               value = DSI3_SEL_IN_RDMA1;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
+               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
+               value = DPI0_SEL_IN_RDMA2;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
+               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
+               value = DPI1_SEL_IN_RDMA2;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI0) {
+               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
+               value = DSI0_SEL_IN_RDMA2;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
+               *addr = DISP_REG_CONFIG_DSIO_SEL_IN;
+               value = DSI1_SEL_IN_RDMA2;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
+               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
+               value = DSI2_SEL_IN_RDMA2;
+       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
+               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
+               value = DSI3_SEL_IN_RDMA2;
+       } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
+               *addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN;
+               value = COLOR1_SEL_IN_OVL1;
+       } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
+               *addr = DISP_REG_CONFIG_DSI_SEL;
+               value = DSI_SEL_IN_BLS;
+       } else {
+               value = 0;
+       }
+
+       return value;
+}
+
+static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
+                                  enum mtk_ddp_comp_id cur,
+                                  enum mtk_ddp_comp_id next)
+{
+       if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
+               writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
+                              config_regs + DISP_REG_CONFIG_OUT_SEL);
+       } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
+               writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
+                              config_regs + DISP_REG_CONFIG_OUT_SEL);
+               writel_relaxed(DSI_SEL_IN_RDMA,
+                              config_regs + DISP_REG_CONFIG_DSI_SEL);
+               writel_relaxed(DPI_SEL_IN_BLS,
+                              config_regs + DISP_REG_CONFIG_DPI_SEL);
+       }
+}
+
+struct mtk_mmsys_conn_funcs mt2701_mmsys_funcs = {
+       .mout_en = mtk_mmsys_ddp_mout_en,
+       .sel_in = mtk_mmsys_ddp_sel_in,
+       .sout_sel = mtk_mmsys_ddp_sout_sel,
+};
diff --git a/drivers/soc/mediatek/mmsys/mtk-mmsys.c 
b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
index da2de8f..c35bda1 100644
--- a/drivers/soc/mediatek/mmsys/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
@@ -10,91 +10,34 @@
 #include <linux/platform_device.h>
 #include <linux/soc/mediatek/mtk-mmsys.h>
 
-#define DISP_REG_CONFIG_DISP_OVL0_MOUT_EN      0x040
-#define DISP_REG_CONFIG_DISP_OVL1_MOUT_EN      0x044
-#define DISP_REG_CONFIG_DISP_OD_MOUT_EN                0x048
-#define DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN     0x04c
-#define DISP_REG_CONFIG_DISP_UFOE_MOUT_EN      0x050
-#define DISP_REG_CONFIG_DISP_COLOR0_SEL_IN     0x084
-#define DISP_REG_CONFIG_DISP_COLOR1_SEL_IN     0x088
-#define DISP_REG_CONFIG_DSIE_SEL_IN            0x0a4
-#define DISP_REG_CONFIG_DSIO_SEL_IN            0x0a8
-#define DISP_REG_CONFIG_DPI_SEL_IN             0x0ac
-#define DISP_REG_CONFIG_DISP_RDMA2_SOUT                0x0b8
-#define DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN     0x0c4
-#define DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN     0x0c8
-#define DISP_REG_CONFIG_MMSYS_CG_CON0          0x100
-
-#define DISP_REG_CONFIG_DISP_OVL_MOUT_EN       0x030
-#define DISP_REG_CONFIG_OUT_SEL                        0x04c
-#define DISP_REG_CONFIG_DSI_SEL                        0x050
-#define DISP_REG_CONFIG_DPI_SEL                        0x064
-
-#define OVL0_MOUT_EN_COLOR0                    0x1
-#define OD_MOUT_EN_RDMA0                       0x1
-#define OD1_MOUT_EN_RDMA1                      BIT(16)
-#define UFOE_MOUT_EN_DSI0                      0x1
-#define COLOR0_SEL_IN_OVL0                     0x1
-#define OVL1_MOUT_EN_COLOR1                    0x1
-#define GAMMA_MOUT_EN_RDMA1                    0x1
-#define RDMA0_SOUT_DPI0                                0x2
-#define RDMA0_SOUT_DPI1                                0x3
-#define RDMA0_SOUT_DSI1                                0x1
-#define RDMA0_SOUT_DSI2                                0x4
-#define RDMA0_SOUT_DSI3                                0x5
-#define RDMA1_SOUT_DPI0                                0x2
-#define RDMA1_SOUT_DPI1                                0x3
-#define RDMA1_SOUT_DSI1                                0x1
-#define RDMA1_SOUT_DSI2                                0x4
-#define RDMA1_SOUT_DSI3                                0x5
-#define RDMA2_SOUT_DPI0                                0x2
-#define RDMA2_SOUT_DPI1                                0x3
-#define RDMA2_SOUT_DSI1                                0x1
-#define RDMA2_SOUT_DSI2                                0x4
-#define RDMA2_SOUT_DSI3                                0x5
-#define DPI0_SEL_IN_RDMA1                      0x1
-#define DPI0_SEL_IN_RDMA2                      0x3
-#define DPI1_SEL_IN_RDMA1                      (0x1 << 8)
-#define DPI1_SEL_IN_RDMA2                      (0x3 << 8)
-#define DSI0_SEL_IN_RDMA1                      0x1
-#define DSI0_SEL_IN_RDMA2                      0x4
-#define DSI1_SEL_IN_RDMA1                      0x1
-#define DSI1_SEL_IN_RDMA2                      0x4
-#define DSI2_SEL_IN_RDMA1                      (0x1 << 16)
-#define DSI2_SEL_IN_RDMA2                      (0x4 << 16)
-#define DSI3_SEL_IN_RDMA1                      (0x1 << 16)
-#define DSI3_SEL_IN_RDMA2                      (0x4 << 16)
-#define COLOR1_SEL_IN_OVL1                     0x1
-
-#define OVL_MOUT_EN_RDMA                       0x1
-#define BLS_TO_DSI_RDMA1_TO_DPI1               0x8
-#define BLS_TO_DPI_RDMA1_TO_DSI                        0x2
-#define DSI_SEL_IN_BLS                         0x0
-#define DPI_SEL_IN_BLS                         0x0
-#define DSI_SEL_IN_RDMA                                0x1
-
 struct mtk_mmsys_driver_data {
        const char *clk_driver;
+       const struct mtk_mmsys_conn_funcs *funcs;
 };
 
 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
        .clk_driver = "clk-mt2701-mm",
+       .funcs = &mt2701_mmsys_funcs,
 };
 
 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
        .clk_driver = "clk-mt2712-mm",
+       .funcs = &mt2701_mmsys_funcs,
 };
 
 static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
        .clk_driver = "clk-mt6779-mm",
+       .funcs = &mt2701_mmsys_funcs,
 };
 
 static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
        .clk_driver = "clk-mt6797-mm",
+       .funcs = &mt2701_mmsys_funcs,
 };
 
 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
        .clk_driver = "clk-mt8173-mm",
+       .funcs = &mt2701_mmsys_funcs,
 };
 
 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
@@ -106,176 +49,26 @@ struct mtk_mmsys {
        const struct mtk_mmsys_driver_data *data;
 };
 
-static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur,
-                                         enum mtk_ddp_comp_id next,
-                                         unsigned int *addr)
-{
-       unsigned int value;
-
-       if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
-               *addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN;
-               value = OVL0_MOUT_EN_COLOR0;
-       } else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) {
-               *addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN;
-               value = OVL_MOUT_EN_RDMA;
-       } else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) {
-               *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
-               value = OD_MOUT_EN_RDMA0;
-       } else if (cur == DDP_COMPONENT_UFOE && next == DDP_COMPONENT_DSI0) {
-               *addr = DISP_REG_CONFIG_DISP_UFOE_MOUT_EN;
-               value = UFOE_MOUT_EN_DSI0;
-       } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
-               *addr = DISP_REG_CONFIG_DISP_OVL1_MOUT_EN;
-               value = OVL1_MOUT_EN_COLOR1;
-       } else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) {
-               *addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN;
-               value = GAMMA_MOUT_EN_RDMA1;
-       } else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) {
-               *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
-               value = OD1_MOUT_EN_RDMA1;
-       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI0) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
-               value = RDMA0_SOUT_DPI0;
-       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI1) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
-               value = RDMA0_SOUT_DPI1;
-       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI1) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
-               value = RDMA0_SOUT_DSI1;
-       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI2) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
-               value = RDMA0_SOUT_DSI2;
-       } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI3) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
-               value = RDMA0_SOUT_DSI3;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
-               value = RDMA1_SOUT_DSI1;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
-               value = RDMA1_SOUT_DSI2;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
-               value = RDMA1_SOUT_DSI3;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
-               value = RDMA1_SOUT_DPI0;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
-               value = RDMA1_SOUT_DPI1;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
-               value = RDMA2_SOUT_DPI0;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
-               value = RDMA2_SOUT_DPI1;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
-               value = RDMA2_SOUT_DSI1;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
-               value = RDMA2_SOUT_DSI2;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
-               *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
-               value = RDMA2_SOUT_DSI3;
-       } else {
-               value = 0;
-       }
-
-       return value;
-}
-
-static unsigned int mtk_mmsys_ddp_sel_in(enum mtk_ddp_comp_id cur,
-                                        enum mtk_ddp_comp_id next,
-                                        unsigned int *addr)
-{
-       unsigned int value;
-
-       if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
-               *addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN;
-               value = COLOR0_SEL_IN_OVL0;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
-               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
-               value = DPI0_SEL_IN_RDMA1;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
-               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
-               value = DPI1_SEL_IN_RDMA1;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
-               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
-               value = DSI0_SEL_IN_RDMA1;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
-               *addr = DISP_REG_CONFIG_DSIO_SEL_IN;
-               value = DSI1_SEL_IN_RDMA1;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
-               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
-               value = DSI2_SEL_IN_RDMA1;
-       } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
-               *addr = DISP_REG_CONFIG_DSIO_SEL_IN;
-               value = DSI3_SEL_IN_RDMA1;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
-               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
-               value = DPI0_SEL_IN_RDMA2;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
-               *addr = DISP_REG_CONFIG_DPI_SEL_IN;
-               value = DPI1_SEL_IN_RDMA2;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI0) {
-               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
-               value = DSI0_SEL_IN_RDMA2;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
-               *addr = DISP_REG_CONFIG_DSIO_SEL_IN;
-               value = DSI1_SEL_IN_RDMA2;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
-               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
-               value = DSI2_SEL_IN_RDMA2;
-       } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
-               *addr = DISP_REG_CONFIG_DSIE_SEL_IN;
-               value = DSI3_SEL_IN_RDMA2;
-       } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
-               *addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN;
-               value = COLOR1_SEL_IN_OVL1;
-       } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
-               *addr = DISP_REG_CONFIG_DSI_SEL;
-               value = DSI_SEL_IN_BLS;
-       } else {
-               value = 0;
-       }
-
-       return value;
-}
-
-static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
-                                  enum mtk_ddp_comp_id cur,
-                                  enum mtk_ddp_comp_id next)
-{
-       if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
-               writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
-                              config_regs + DISP_REG_CONFIG_OUT_SEL);
-       } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
-               writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
-                              config_regs + DISP_REG_CONFIG_OUT_SEL);
-               writel_relaxed(DSI_SEL_IN_RDMA,
-                              config_regs + DISP_REG_CONFIG_DSI_SEL);
-               writel_relaxed(DPI_SEL_IN_BLS,
-                              config_regs + DISP_REG_CONFIG_DPI_SEL);
-       }
-}
-
 void mtk_mmsys_ddp_connect(struct device *dev,
                           enum mtk_ddp_comp_id cur,
                           enum mtk_ddp_comp_id next)
 {
        struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
        unsigned int addr, value, reg;
+       const struct mtk_mmsys_conn_funcs *funcs = mmsys->data->funcs;
 
-       value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
+       if (!funcs)
+               return;
+
+       value = funcs->mout_en(cur, next, &addr);
        if (value) {
                reg = readl_relaxed(mmsys->regs + addr) | value;
                writel_relaxed(reg, mmsys->regs + addr);
        }
 
-       mtk_mmsys_ddp_sout_sel(mmsys->regs, cur, next);
+       funcs->sout_sel(mmsys->regs, cur, next);
 
-       value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
+       value = funcs->sel_in(cur, next, &addr);
        if (value) {
                reg = readl_relaxed(mmsys->regs + addr) | value;
                writel_relaxed(reg, mmsys->regs + addr);
@@ -289,14 +82,18 @@ void mtk_mmsys_ddp_disconnect(struct device *dev,
 {
        struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
        unsigned int addr, value, reg;
+       const struct mtk_mmsys_conn_funcs *funcs = mmsys->data->funcs;
+
+       if (!funcs)
+               return;
 
-       value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
+       value = funcs->mout_en(cur, next, &addr);
        if (value) {
                reg = readl_relaxed(mmsys->regs + addr) & ~value;
                writel_relaxed(reg, mmsys->regs + addr);
        }
 
-       value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
+       value = funcs->sel_in(cur, next, &addr);
        if (value) {
                reg = readl_relaxed(mmsys->regs + addr) & ~value;
                writel_relaxed(reg, mmsys->regs + addr);
diff --git a/include/linux/soc/mediatek/mtk-mmsys.h 
b/include/linux/soc/mediatek/mtk-mmsys.h
index 2228bf6..17e8b91 100644
--- a/include/linux/soc/mediatek/mtk-mmsys.h
+++ b/include/linux/soc/mediatek/mtk-mmsys.h
@@ -42,6 +42,20 @@ enum mtk_ddp_comp_id {
        DDP_COMPONENT_ID_MAX,
 };
 
+struct mtk_mmsys_conn_funcs {
+       u32 (*mout_en)(enum mtk_ddp_comp_id cur,
+                      enum mtk_ddp_comp_id next,
+                      unsigned int *addr);
+       u32 (*sel_in)(enum mtk_ddp_comp_id cur,
+                     enum mtk_ddp_comp_id next,
+                     unsigned int *addr);
+       void (*sout_sel)(void __iomem *config_regs,
+                        enum mtk_ddp_comp_id cur,
+                        enum mtk_ddp_comp_id next);
+};
+
+extern struct mtk_mmsys_conn_funcs mt2701_mmsys_funcs;
+
 void mtk_mmsys_ddp_connect(struct device *dev,
                           enum mtk_ddp_comp_id cur,
                           enum mtk_ddp_comp_id next);
-- 
1.8.1.1.dirty

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