diff mbox series

[v11,4/5] soc / drm: mediatek: Move routing control to mmsys device

Message ID 20200302110128.2664251-5-enric.balletbo@collabora.com (mailing list archive)
State Not Applicable, archived
Headers show
Series arm/arm64: mediatek: Fix mt8173 mmsys device probing | expand

Commit Message

Enric Balletbo i Serra March 2, 2020, 11:01 a.m. UTC
Provide a mtk_mmsys_ddp_connect() and mtk_mmsys_disconnect() functions to
replace mtk_ddp_add_comp_to_path() and mtk_ddp_remove_comp_from_path().
Those functions will allow DRM driver and others to control the data
path routing.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
---

Changes in v11:
- Select CONFIG_MTK_MMSYS (CK)
- Pass device pointer of mmsys device instead of config regs (CK)

Changes in v10:
- Introduced a new patch to move routing control into mmsys driver.
- Removed the patch to use regmap as is not needed anymore.

Changes in v9: None
Changes in v8: None
Changes in v7: None

 drivers/gpu/drm/mediatek/Kconfig        |   1 +
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c |  19 +-
 drivers/gpu/drm/mediatek/mtk_drm_ddp.c  | 256 ----------------------
 drivers/gpu/drm/mediatek/mtk_drm_ddp.h  |   7 -
 drivers/gpu/drm/mediatek/mtk_drm_drv.c  |  14 +-
 drivers/gpu/drm/mediatek/mtk_drm_drv.h  |   2 +-
 drivers/soc/mediatek/mtk-mmsys.c        | 277 ++++++++++++++++++++++++
 include/linux/soc/mediatek/mtk-mmsys.h  |  20 ++
 8 files changed, 314 insertions(+), 282 deletions(-)
 create mode 100644 include/linux/soc/mediatek/mtk-mmsys.h

Comments

CK Hu (胡俊光) March 3, 2020, 2:52 a.m. UTC | #1
Hi, Enric:

On Mon, 2020-03-02 at 12:01 +0100, Enric Balletbo i Serra wrote:
> Provide a mtk_mmsys_ddp_connect() and mtk_mmsys_disconnect() functions to
> replace mtk_ddp_add_comp_to_path() and mtk_ddp_remove_comp_from_path().
> Those functions will allow DRM driver and others to control the data
> path routing.
> 

Reviewed-by: CK Hu <ck.hu@mediatek.com>

But what is the base of this series? When I apply this patch to 5.6-rc1,
some error happen, the apply --reject result is

In drivers/gpu/drm/mediatek/mtk_drm_crtc.c.rej

diff a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c        (rejected hunks)
@@ -296,9 +297,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc
*mtk_crtc)
        }

        for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
-               mtk_ddp_add_comp_to_path(mtk_crtc->config_regs,
-                                        mtk_crtc->ddp_comp[i]->id,
-                                        mtk_crtc->ddp_comp[i + 1]->id);
+               mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
+                                     mtk_crtc->ddp_comp[i]->id,
+                                     mtk_crtc->ddp_comp[i + 1]->id);
                mtk_disp_mutex_add_comp(mtk_crtc->mutex,
                                        mtk_crtc->ddp_comp[i]->id);
        }

I's trivial for me to fix this conflicts, so you have better to notice
what is the base of this series in cover latter.

Regards,
CK


> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> 
> Changes in v11:
> - Select CONFIG_MTK_MMSYS (CK)
> - Pass device pointer of mmsys device instead of config regs (CK)
> 
> Changes in v10:
> - Introduced a new patch to move routing control into mmsys driver.
> - Removed the patch to use regmap as is not needed anymore.
> 
> Changes in v9: None
> Changes in v8: None
> Changes in v7: None
> 
>  drivers/gpu/drm/mediatek/Kconfig        |   1 +
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c |  19 +-
>  drivers/gpu/drm/mediatek/mtk_drm_ddp.c  | 256 ----------------------
>  drivers/gpu/drm/mediatek/mtk_drm_ddp.h  |   7 -
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c  |  14 +-
>  drivers/gpu/drm/mediatek/mtk_drm_drv.h  |   2 +-
>  drivers/soc/mediatek/mtk-mmsys.c        | 277 ++++++++++++++++++++++++
>  include/linux/soc/mediatek/mtk-mmsys.h  |  20 ++
>  8 files changed, 314 insertions(+), 282 deletions(-)
>  create mode 100644 include/linux/soc/mediatek/mtk-mmsys.h
> 
> diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
> index fa5ffc4fe823..c420f5a3d33b 100644
> --- a/drivers/gpu/drm/mediatek/Kconfig
> +++ b/drivers/gpu/drm/mediatek/Kconfig
> @@ -11,6 +11,7 @@ config DRM_MEDIATEK
>  	select DRM_MIPI_DSI
>  	select DRM_PANEL
>  	select MEMORY
> +	select MTK_MMSYS
>  	select MTK_SMI
>  	select VIDEOMODE_HELPERS
>  	help
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index fd4042de12f2..f63a885e063c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -6,6 +6,7 @@
>  #include <linux/clk.h>
>  #include <linux/pm_runtime.h>
>  #include <linux/soc/mediatek/mtk-cmdq.h>
> +#include <linux/soc/mediatek/mtk-mmsys.h>
>  
>  #include <asm/barrier.h>
>  #include <soc/mediatek/smi.h>
> @@ -28,7 +29,7 @@
>   * @enabled: records whether crtc_enable succeeded
>   * @planes: array of 4 drm_plane structures, one for each overlay plane
>   * @pending_planes: whether any plane has pending changes to be applied
> - * @config_regs: memory mapped mmsys configuration register space
> + * @mmsys_dev: pointer to the mmsys device for configuration registers
>   * @mutex: handle to one of the ten disp_mutex streams
>   * @ddp_comp_nr: number of components in ddp_comp
>   * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc
> @@ -50,7 +51,7 @@ struct mtk_drm_crtc {
>  	u32				cmdq_event;
>  #endif
>  
> -	void __iomem			*config_regs;
> +	struct device			*mmsys_dev;
>  	struct mtk_disp_mutex		*mutex;
>  	unsigned int			ddp_comp_nr;
>  	struct mtk_ddp_comp		**ddp_comp;
> @@ -296,9 +297,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
>  	}
>  
>  	for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
> -		mtk_ddp_add_comp_to_path(mtk_crtc->config_regs,
> -					 mtk_crtc->ddp_comp[i]->id,
> -					 mtk_crtc->ddp_comp[i + 1]->id);
> +		mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
> +				      mtk_crtc->ddp_comp[i]->id,
> +				      mtk_crtc->ddp_comp[i + 1]->id);
>  		mtk_disp_mutex_add_comp(mtk_crtc->mutex,
>  					mtk_crtc->ddp_comp[i]->id);
>  	}
> @@ -355,9 +356,9 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
>  					   mtk_crtc->ddp_comp[i]->id);
>  	mtk_disp_mutex_disable(mtk_crtc->mutex);
>  	for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
> -		mtk_ddp_remove_comp_from_path(mtk_crtc->config_regs,
> -					      mtk_crtc->ddp_comp[i]->id,
> -					      mtk_crtc->ddp_comp[i + 1]->id);
> +		mtk_mmsys_ddp_disconnect(mtk_crtc->mmsys_dev,
> +					 mtk_crtc->ddp_comp[i]->id,
> +					 mtk_crtc->ddp_comp[i + 1]->id);
>  		mtk_disp_mutex_remove_comp(mtk_crtc->mutex,
>  					   mtk_crtc->ddp_comp[i]->id);
>  	}
> @@ -758,7 +759,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
>  	if (!mtk_crtc)
>  		return -ENOMEM;
>  
> -	mtk_crtc->config_regs = priv->config_regs;
> +	mtk_crtc->mmsys_dev = priv->mmsys_dev;
>  	mtk_crtc->ddp_comp_nr = path_len;
>  	mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr,
>  						sizeof(*mtk_crtc->ddp_comp),
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index b885f60f474c..014c1bbe1df2 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -13,26 +13,6 @@
>  #include "mtk_drm_ddp.h"
>  #include "mtk_drm_ddp_comp.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 MT2701_DISP_MUTEX0_MOD0			0x2c
>  #define MT2701_DISP_MUTEX0_SOF0			0x30
>  
> @@ -94,48 +74,6 @@
>  #define MUTEX_SOF_DSI2			5
>  #define MUTEX_SOF_DSI3			6
>  
> -#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_disp_mutex {
>  	int id;
> @@ -246,200 +184,6 @@ static const struct mtk_ddp_data mt8173_ddp_driver_data = {
>  	.mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0,
>  };
>  
> -static unsigned int mtk_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_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_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_ddp_add_comp_to_path(void __iomem *config_regs,
> -			      enum mtk_ddp_comp_id cur,
> -			      enum mtk_ddp_comp_id next)
> -{
> -	unsigned int addr, value, reg;
> -
> -	value = mtk_ddp_mout_en(cur, next, &addr);
> -	if (value) {
> -		reg = readl_relaxed(config_regs + addr) | value;
> -		writel_relaxed(reg, config_regs + addr);
> -	}
> -
> -	mtk_ddp_sout_sel(config_regs, cur, next);
> -
> -	value = mtk_ddp_sel_in(cur, next, &addr);
> -	if (value) {
> -		reg = readl_relaxed(config_regs + addr) | value;
> -		writel_relaxed(reg, config_regs + addr);
> -	}
> -}
> -
> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
> -				   enum mtk_ddp_comp_id cur,
> -				   enum mtk_ddp_comp_id next)
> -{
> -	unsigned int addr, value, reg;
> -
> -	value = mtk_ddp_mout_en(cur, next, &addr);
> -	if (value) {
> -		reg = readl_relaxed(config_regs + addr) & ~value;
> -		writel_relaxed(reg, config_regs + addr);
> -	}
> -
> -	value = mtk_ddp_sel_in(cur, next, &addr);
> -	if (value) {
> -		reg = readl_relaxed(config_regs + addr) & ~value;
> -		writel_relaxed(reg, config_regs + addr);
> -	}
> -}
> -
>  struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id)
>  {
>  	struct mtk_ddp *ddp = dev_get_drvdata(dev);
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
> index 827be424a148..6b691a57be4a 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
> @@ -12,13 +12,6 @@ struct regmap;
>  struct device;
>  struct mtk_disp_mutex;
>  
> -void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
> -			      enum mtk_ddp_comp_id cur,
> -			      enum mtk_ddp_comp_id next);
> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
> -				   enum mtk_ddp_comp_id cur,
> -				   enum mtk_ddp_comp_id next);
> -
>  struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id);
>  int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex);
>  void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 8e2d3cb62ad5..208f9c5256ef 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -10,6 +10,7 @@
>  #include <linux/of_address.h>
>  #include <linux/of_platform.h>
>  #include <linux/pm_runtime.h>
> +#include <linux/soc/mediatek/mtk-mmsys.h>
>  #include <linux/dma-mapping.h>
>  
>  #include <drm/drm_atomic.h>
> @@ -425,7 +426,6 @@ static int mtk_drm_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
>  	struct mtk_drm_private *private;
> -	struct resource *mem;
>  	struct device_node *node;
>  	struct component_match *match = NULL;
>  	int ret;
> @@ -436,14 +436,10 @@ static int mtk_drm_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	private->data = of_device_get_match_data(dev);
> -
> -	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	private->config_regs = devm_ioremap_resource(dev, mem);
> -	if (IS_ERR(private->config_regs)) {
> -		ret = PTR_ERR(private->config_regs);
> -		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
> -			ret);
> -		return ret;
> +	private->mmsys_dev = dev->parent;
> +	if (!private->mmsys_dev) {
> +		dev_err(dev, "Failed to get MMSYS device\n");
> +		return -ENODEV;
>  	}
>  
>  	/* Iterate over sibling DISP function blocks */
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> index 17bc99b9f5d4..b5be63e53176 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> @@ -39,7 +39,7 @@ struct mtk_drm_private {
>  
>  	struct device_node *mutex_node;
>  	struct device *mutex_dev;
> -	void __iomem *config_regs;
> +	struct device *mmsys_dev;
>  	struct device_node *comp_node[DDP_COMPONENT_ID_MAX];
>  	struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX];
>  	const struct mtk_mmsys_driver_data *data;
> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
> index 473cdf732fb5..bb99a05fb278 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mtk-mmsys.c
> @@ -5,14 +5,81 @@
>   */
>  
>  #include <linux/clk-provider.h>
> +#include <linux/device.h>
>  #include <linux/of_device.h>
>  #include <linux/platform_device.h>
> +#include <linux/soc/mediatek/mtk-mmsys.h>
>  
>  #include "../../clk/mediatek/clk-gate.h"
>  #include "../../clk/mediatek/clk-mtk.h"
> +#include "../../gpu/drm/mediatek/mtk_drm_ddp.h"
> +#include "../../gpu/drm/mediatek/mtk_drm_ddp_comp.h"
>  
>  #include <dt-bindings/clock/mt8173-clk.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 const struct mtk_gate_regs mm0_cg_regs = {
>  	.set_ofs = 0x0104,
>  	.clr_ofs = 0x0108,
> @@ -110,13 +177,223 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
>  	.gates_num = ARRAY_SIZE(mt8173_mm_clks),
>  };
>  
> +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)
> +{
> +	void __iomem *config_regs = dev_get_drvdata(dev);
> +	unsigned int addr, value, reg;
> +
> +	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
> +	if (value) {
> +		reg = readl_relaxed(config_regs + addr) | value;
> +		writel_relaxed(reg, config_regs + addr);
> +	}
> +
> +	mtk_mmsys_ddp_sout_sel(config_regs, cur, next);
> +
> +	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
> +	if (value) {
> +		reg = readl_relaxed(config_regs + addr) | value;
> +		writel_relaxed(reg, config_regs + addr);
> +	}
> +}
> +
> +void mtk_mmsys_ddp_disconnect(struct device *dev,
> +			      enum mtk_ddp_comp_id cur,
> +			      enum mtk_ddp_comp_id next)
> +{
> +	void __iomem *config_regs = dev_get_drvdata(dev);
> +	unsigned int addr, value, reg;
> +
> +	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
> +	if (value) {
> +		reg = readl_relaxed(config_regs + addr) & ~value;
> +		writel_relaxed(reg, config_regs + addr);
> +	}
> +
> +	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
> +	if (value) {
> +		reg = readl_relaxed(config_regs + addr) & ~value;
> +		writel_relaxed(reg, config_regs + addr);
> +	}
> +}
> +
>  static int mtk_mmsys_probe(struct platform_device *pdev)
>  {
>  	struct device_node *node = pdev->dev.of_node;
>  	const struct mtk_mmsys_driver_data *data;
>  	struct clk_onecell_data *clk_data;
> +	struct device *dev = &pdev->dev;
> +	void __iomem *config_regs;
> +	struct resource *mem;
>  	int ret;
>  
> +	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	config_regs = devm_ioremap_resource(dev, mem);
> +	if (IS_ERR(config_regs)) {
> +		ret = PTR_ERR(config_regs);
> +		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
> +			ret);
> +		return ret;
> +	}
> +
> +	platform_set_drvdata(pdev, config_regs);
> +
>  	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
>  	if (!clk_data)
>  		return -ENOMEM;
> diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
> new file mode 100644
> index 000000000000..7bab5d9a3d31
> --- /dev/null
> +++ b/include/linux/soc/mediatek/mtk-mmsys.h
> @@ -0,0 +1,20 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (c) 2015 MediaTek Inc.
> + */
> +
> +#ifndef __MTK_MMSYS_H
> +#define __MTK_MMSYS_H
> +
> +enum mtk_ddp_comp_id;
> +struct device;
> +
> +void mtk_mmsys_ddp_connect(struct device *dev,
> +			   enum mtk_ddp_comp_id cur,
> +			   enum mtk_ddp_comp_id next);
> +
> +void mtk_mmsys_ddp_disconnect(struct device *dev,
> +			      enum mtk_ddp_comp_id cur,
> +			      enum mtk_ddp_comp_id next);
> +
> +#endif /* __MTK_MMSYS_H */
Enric Balletbo i Serra March 3, 2020, 8:28 a.m. UTC | #2
Hi CK,

On 3/3/20 3:52, CK Hu wrote:
> Hi, Enric:
> 
> On Mon, 2020-03-02 at 12:01 +0100, Enric Balletbo i Serra wrote:
>> Provide a mtk_mmsys_ddp_connect() and mtk_mmsys_disconnect() functions to
>> replace mtk_ddp_add_comp_to_path() and mtk_ddp_remove_comp_from_path().
>> Those functions will allow DRM driver and others to control the data
>> path routing.
>>
> 
> Reviewed-by: CK Hu <ck.hu@mediatek.com>
> 
> But what is the base of this series? When I apply this patch to 5.6-rc1,
> some error happen, the apply --reject result is
> 

I think the conflict is because I have this patch [1] applied on my tree too.
But as you said, easy to fix. Sorry about the extra job.

[1] https://patchwork.kernel.org/patch/11406227/

> In drivers/gpu/drm/mediatek/mtk_drm_crtc.c.rej
> 
> diff a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c        (rejected hunks)
> @@ -296,9 +297,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc
> *mtk_crtc)
>         }
> 
>         for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
> -               mtk_ddp_add_comp_to_path(mtk_crtc->config_regs,
> -                                        mtk_crtc->ddp_comp[i]->id,
> -                                        mtk_crtc->ddp_comp[i + 1]->id);
> +               mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
> +                                     mtk_crtc->ddp_comp[i]->id,
> +                                     mtk_crtc->ddp_comp[i + 1]->id);
>                 mtk_disp_mutex_add_comp(mtk_crtc->mutex,
>                                         mtk_crtc->ddp_comp[i]->id);
>         }
> 
> I's trivial for me to fix this conflicts, so you have better to notice
> what is the base of this series in cover latter.
> 
> Regards,
> CK
> 
> 
>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
>> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
>> ---
>>
>> Changes in v11:
>> - Select CONFIG_MTK_MMSYS (CK)
>> - Pass device pointer of mmsys device instead of config regs (CK)
>>
>> Changes in v10:
>> - Introduced a new patch to move routing control into mmsys driver.
>> - Removed the patch to use regmap as is not needed anymore.
>>
>> Changes in v9: None
>> Changes in v8: None
>> Changes in v7: None
>>
>>  drivers/gpu/drm/mediatek/Kconfig        |   1 +
>>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c |  19 +-
>>  drivers/gpu/drm/mediatek/mtk_drm_ddp.c  | 256 ----------------------
>>  drivers/gpu/drm/mediatek/mtk_drm_ddp.h  |   7 -
>>  drivers/gpu/drm/mediatek/mtk_drm_drv.c  |  14 +-
>>  drivers/gpu/drm/mediatek/mtk_drm_drv.h  |   2 +-
>>  drivers/soc/mediatek/mtk-mmsys.c        | 277 ++++++++++++++++++++++++
>>  include/linux/soc/mediatek/mtk-mmsys.h  |  20 ++
>>  8 files changed, 314 insertions(+), 282 deletions(-)
>>  create mode 100644 include/linux/soc/mediatek/mtk-mmsys.h
>>
>> diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
>> index fa5ffc4fe823..c420f5a3d33b 100644
>> --- a/drivers/gpu/drm/mediatek/Kconfig
>> +++ b/drivers/gpu/drm/mediatek/Kconfig
>> @@ -11,6 +11,7 @@ config DRM_MEDIATEK
>>  	select DRM_MIPI_DSI
>>  	select DRM_PANEL
>>  	select MEMORY
>> +	select MTK_MMSYS
>>  	select MTK_SMI
>>  	select VIDEOMODE_HELPERS
>>  	help
>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
>> index fd4042de12f2..f63a885e063c 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
>> @@ -6,6 +6,7 @@
>>  #include <linux/clk.h>
>>  #include <linux/pm_runtime.h>
>>  #include <linux/soc/mediatek/mtk-cmdq.h>
>> +#include <linux/soc/mediatek/mtk-mmsys.h>
>>  
>>  #include <asm/barrier.h>
>>  #include <soc/mediatek/smi.h>
>> @@ -28,7 +29,7 @@
>>   * @enabled: records whether crtc_enable succeeded
>>   * @planes: array of 4 drm_plane structures, one for each overlay plane
>>   * @pending_planes: whether any plane has pending changes to be applied
>> - * @config_regs: memory mapped mmsys configuration register space
>> + * @mmsys_dev: pointer to the mmsys device for configuration registers
>>   * @mutex: handle to one of the ten disp_mutex streams
>>   * @ddp_comp_nr: number of components in ddp_comp
>>   * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc
>> @@ -50,7 +51,7 @@ struct mtk_drm_crtc {
>>  	u32				cmdq_event;
>>  #endif
>>  
>> -	void __iomem			*config_regs;
>> +	struct device			*mmsys_dev;
>>  	struct mtk_disp_mutex		*mutex;
>>  	unsigned int			ddp_comp_nr;
>>  	struct mtk_ddp_comp		**ddp_comp;
>> @@ -296,9 +297,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
>>  	}
>>  
>>  	for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
>> -		mtk_ddp_add_comp_to_path(mtk_crtc->config_regs,
>> -					 mtk_crtc->ddp_comp[i]->id,
>> -					 mtk_crtc->ddp_comp[i + 1]->id);
>> +		mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
>> +				      mtk_crtc->ddp_comp[i]->id,
>> +				      mtk_crtc->ddp_comp[i + 1]->id);
>>  		mtk_disp_mutex_add_comp(mtk_crtc->mutex,
>>  					mtk_crtc->ddp_comp[i]->id);
>>  	}
>> @@ -355,9 +356,9 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
>>  					   mtk_crtc->ddp_comp[i]->id);
>>  	mtk_disp_mutex_disable(mtk_crtc->mutex);
>>  	for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
>> -		mtk_ddp_remove_comp_from_path(mtk_crtc->config_regs,
>> -					      mtk_crtc->ddp_comp[i]->id,
>> -					      mtk_crtc->ddp_comp[i + 1]->id);
>> +		mtk_mmsys_ddp_disconnect(mtk_crtc->mmsys_dev,
>> +					 mtk_crtc->ddp_comp[i]->id,
>> +					 mtk_crtc->ddp_comp[i + 1]->id);
>>  		mtk_disp_mutex_remove_comp(mtk_crtc->mutex,
>>  					   mtk_crtc->ddp_comp[i]->id);
>>  	}
>> @@ -758,7 +759,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
>>  	if (!mtk_crtc)
>>  		return -ENOMEM;
>>  
>> -	mtk_crtc->config_regs = priv->config_regs;
>> +	mtk_crtc->mmsys_dev = priv->mmsys_dev;
>>  	mtk_crtc->ddp_comp_nr = path_len;
>>  	mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr,
>>  						sizeof(*mtk_crtc->ddp_comp),
>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
>> index b885f60f474c..014c1bbe1df2 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
>> @@ -13,26 +13,6 @@
>>  #include "mtk_drm_ddp.h"
>>  #include "mtk_drm_ddp_comp.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 MT2701_DISP_MUTEX0_MOD0			0x2c
>>  #define MT2701_DISP_MUTEX0_SOF0			0x30
>>  
>> @@ -94,48 +74,6 @@
>>  #define MUTEX_SOF_DSI2			5
>>  #define MUTEX_SOF_DSI3			6
>>  
>> -#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_disp_mutex {
>>  	int id;
>> @@ -246,200 +184,6 @@ static const struct mtk_ddp_data mt8173_ddp_driver_data = {
>>  	.mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0,
>>  };
>>  
>> -static unsigned int mtk_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_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_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_ddp_add_comp_to_path(void __iomem *config_regs,
>> -			      enum mtk_ddp_comp_id cur,
>> -			      enum mtk_ddp_comp_id next)
>> -{
>> -	unsigned int addr, value, reg;
>> -
>> -	value = mtk_ddp_mout_en(cur, next, &addr);
>> -	if (value) {
>> -		reg = readl_relaxed(config_regs + addr) | value;
>> -		writel_relaxed(reg, config_regs + addr);
>> -	}
>> -
>> -	mtk_ddp_sout_sel(config_regs, cur, next);
>> -
>> -	value = mtk_ddp_sel_in(cur, next, &addr);
>> -	if (value) {
>> -		reg = readl_relaxed(config_regs + addr) | value;
>> -		writel_relaxed(reg, config_regs + addr);
>> -	}
>> -}
>> -
>> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
>> -				   enum mtk_ddp_comp_id cur,
>> -				   enum mtk_ddp_comp_id next)
>> -{
>> -	unsigned int addr, value, reg;
>> -
>> -	value = mtk_ddp_mout_en(cur, next, &addr);
>> -	if (value) {
>> -		reg = readl_relaxed(config_regs + addr) & ~value;
>> -		writel_relaxed(reg, config_regs + addr);
>> -	}
>> -
>> -	value = mtk_ddp_sel_in(cur, next, &addr);
>> -	if (value) {
>> -		reg = readl_relaxed(config_regs + addr) & ~value;
>> -		writel_relaxed(reg, config_regs + addr);
>> -	}
>> -}
>> -
>>  struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id)
>>  {
>>  	struct mtk_ddp *ddp = dev_get_drvdata(dev);
>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
>> index 827be424a148..6b691a57be4a 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
>> @@ -12,13 +12,6 @@ struct regmap;
>>  struct device;
>>  struct mtk_disp_mutex;
>>  
>> -void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
>> -			      enum mtk_ddp_comp_id cur,
>> -			      enum mtk_ddp_comp_id next);
>> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
>> -				   enum mtk_ddp_comp_id cur,
>> -				   enum mtk_ddp_comp_id next);
>> -
>>  struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id);
>>  int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex);
>>  void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
>> index 8e2d3cb62ad5..208f9c5256ef 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
>> @@ -10,6 +10,7 @@
>>  #include <linux/of_address.h>
>>  #include <linux/of_platform.h>
>>  #include <linux/pm_runtime.h>
>> +#include <linux/soc/mediatek/mtk-mmsys.h>
>>  #include <linux/dma-mapping.h>
>>  
>>  #include <drm/drm_atomic.h>
>> @@ -425,7 +426,6 @@ static int mtk_drm_probe(struct platform_device *pdev)
>>  {
>>  	struct device *dev = &pdev->dev;
>>  	struct mtk_drm_private *private;
>> -	struct resource *mem;
>>  	struct device_node *node;
>>  	struct component_match *match = NULL;
>>  	int ret;
>> @@ -436,14 +436,10 @@ static int mtk_drm_probe(struct platform_device *pdev)
>>  		return -ENOMEM;
>>  
>>  	private->data = of_device_get_match_data(dev);
>> -
>> -	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> -	private->config_regs = devm_ioremap_resource(dev, mem);
>> -	if (IS_ERR(private->config_regs)) {
>> -		ret = PTR_ERR(private->config_regs);
>> -		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
>> -			ret);
>> -		return ret;
>> +	private->mmsys_dev = dev->parent;
>> +	if (!private->mmsys_dev) {
>> +		dev_err(dev, "Failed to get MMSYS device\n");
>> +		return -ENODEV;
>>  	}
>>  
>>  	/* Iterate over sibling DISP function blocks */
>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
>> index 17bc99b9f5d4..b5be63e53176 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
>> @@ -39,7 +39,7 @@ struct mtk_drm_private {
>>  
>>  	struct device_node *mutex_node;
>>  	struct device *mutex_dev;
>> -	void __iomem *config_regs;
>> +	struct device *mmsys_dev;
>>  	struct device_node *comp_node[DDP_COMPONENT_ID_MAX];
>>  	struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX];
>>  	const struct mtk_mmsys_driver_data *data;
>> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
>> index 473cdf732fb5..bb99a05fb278 100644
>> --- a/drivers/soc/mediatek/mtk-mmsys.c
>> +++ b/drivers/soc/mediatek/mtk-mmsys.c
>> @@ -5,14 +5,81 @@
>>   */
>>  
>>  #include <linux/clk-provider.h>
>> +#include <linux/device.h>
>>  #include <linux/of_device.h>
>>  #include <linux/platform_device.h>
>> +#include <linux/soc/mediatek/mtk-mmsys.h>
>>  
>>  #include "../../clk/mediatek/clk-gate.h"
>>  #include "../../clk/mediatek/clk-mtk.h"
>> +#include "../../gpu/drm/mediatek/mtk_drm_ddp.h"
>> +#include "../../gpu/drm/mediatek/mtk_drm_ddp_comp.h"
>>  
>>  #include <dt-bindings/clock/mt8173-clk.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 const struct mtk_gate_regs mm0_cg_regs = {
>>  	.set_ofs = 0x0104,
>>  	.clr_ofs = 0x0108,
>> @@ -110,13 +177,223 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
>>  	.gates_num = ARRAY_SIZE(mt8173_mm_clks),
>>  };
>>  
>> +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)
>> +{
>> +	void __iomem *config_regs = dev_get_drvdata(dev);
>> +	unsigned int addr, value, reg;
>> +
>> +	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
>> +	if (value) {
>> +		reg = readl_relaxed(config_regs + addr) | value;
>> +		writel_relaxed(reg, config_regs + addr);
>> +	}
>> +
>> +	mtk_mmsys_ddp_sout_sel(config_regs, cur, next);
>> +
>> +	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
>> +	if (value) {
>> +		reg = readl_relaxed(config_regs + addr) | value;
>> +		writel_relaxed(reg, config_regs + addr);
>> +	}
>> +}
>> +
>> +void mtk_mmsys_ddp_disconnect(struct device *dev,
>> +			      enum mtk_ddp_comp_id cur,
>> +			      enum mtk_ddp_comp_id next)
>> +{
>> +	void __iomem *config_regs = dev_get_drvdata(dev);
>> +	unsigned int addr, value, reg;
>> +
>> +	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
>> +	if (value) {
>> +		reg = readl_relaxed(config_regs + addr) & ~value;
>> +		writel_relaxed(reg, config_regs + addr);
>> +	}
>> +
>> +	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
>> +	if (value) {
>> +		reg = readl_relaxed(config_regs + addr) & ~value;
>> +		writel_relaxed(reg, config_regs + addr);
>> +	}
>> +}
>> +
>>  static int mtk_mmsys_probe(struct platform_device *pdev)
>>  {
>>  	struct device_node *node = pdev->dev.of_node;
>>  	const struct mtk_mmsys_driver_data *data;
>>  	struct clk_onecell_data *clk_data;
>> +	struct device *dev = &pdev->dev;
>> +	void __iomem *config_regs;
>> +	struct resource *mem;
>>  	int ret;
>>  
>> +	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> +	config_regs = devm_ioremap_resource(dev, mem);
>> +	if (IS_ERR(config_regs)) {
>> +		ret = PTR_ERR(config_regs);
>> +		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
>> +			ret);
>> +		return ret;
>> +	}
>> +
>> +	platform_set_drvdata(pdev, config_regs);
>> +
>>  	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
>>  	if (!clk_data)
>>  		return -ENOMEM;
>> diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
>> new file mode 100644
>> index 000000000000..7bab5d9a3d31
>> --- /dev/null
>> +++ b/include/linux/soc/mediatek/mtk-mmsys.h
>> @@ -0,0 +1,20 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
>> +/*
>> + * Copyright (c) 2015 MediaTek Inc.
>> + */
>> +
>> +#ifndef __MTK_MMSYS_H
>> +#define __MTK_MMSYS_H
>> +
>> +enum mtk_ddp_comp_id;
>> +struct device;
>> +
>> +void mtk_mmsys_ddp_connect(struct device *dev,
>> +			   enum mtk_ddp_comp_id cur,
>> +			   enum mtk_ddp_comp_id next);
>> +
>> +void mtk_mmsys_ddp_disconnect(struct device *dev,
>> +			      enum mtk_ddp_comp_id cur,
>> +			      enum mtk_ddp_comp_id next);
>> +
>> +#endif /* __MTK_MMSYS_H */
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index fa5ffc4fe823..c420f5a3d33b 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -11,6 +11,7 @@  config DRM_MEDIATEK
 	select DRM_MIPI_DSI
 	select DRM_PANEL
 	select MEMORY
+	select MTK_MMSYS
 	select MTK_SMI
 	select VIDEOMODE_HELPERS
 	help
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index fd4042de12f2..f63a885e063c 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -6,6 +6,7 @@ 
 #include <linux/clk.h>
 #include <linux/pm_runtime.h>
 #include <linux/soc/mediatek/mtk-cmdq.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
 
 #include <asm/barrier.h>
 #include <soc/mediatek/smi.h>
@@ -28,7 +29,7 @@ 
  * @enabled: records whether crtc_enable succeeded
  * @planes: array of 4 drm_plane structures, one for each overlay plane
  * @pending_planes: whether any plane has pending changes to be applied
- * @config_regs: memory mapped mmsys configuration register space
+ * @mmsys_dev: pointer to the mmsys device for configuration registers
  * @mutex: handle to one of the ten disp_mutex streams
  * @ddp_comp_nr: number of components in ddp_comp
  * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc
@@ -50,7 +51,7 @@  struct mtk_drm_crtc {
 	u32				cmdq_event;
 #endif
 
-	void __iomem			*config_regs;
+	struct device			*mmsys_dev;
 	struct mtk_disp_mutex		*mutex;
 	unsigned int			ddp_comp_nr;
 	struct mtk_ddp_comp		**ddp_comp;
@@ -296,9 +297,9 @@  static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
 	}
 
 	for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
-		mtk_ddp_add_comp_to_path(mtk_crtc->config_regs,
-					 mtk_crtc->ddp_comp[i]->id,
-					 mtk_crtc->ddp_comp[i + 1]->id);
+		mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
+				      mtk_crtc->ddp_comp[i]->id,
+				      mtk_crtc->ddp_comp[i + 1]->id);
 		mtk_disp_mutex_add_comp(mtk_crtc->mutex,
 					mtk_crtc->ddp_comp[i]->id);
 	}
@@ -355,9 +356,9 @@  static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
 					   mtk_crtc->ddp_comp[i]->id);
 	mtk_disp_mutex_disable(mtk_crtc->mutex);
 	for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
-		mtk_ddp_remove_comp_from_path(mtk_crtc->config_regs,
-					      mtk_crtc->ddp_comp[i]->id,
-					      mtk_crtc->ddp_comp[i + 1]->id);
+		mtk_mmsys_ddp_disconnect(mtk_crtc->mmsys_dev,
+					 mtk_crtc->ddp_comp[i]->id,
+					 mtk_crtc->ddp_comp[i + 1]->id);
 		mtk_disp_mutex_remove_comp(mtk_crtc->mutex,
 					   mtk_crtc->ddp_comp[i]->id);
 	}
@@ -758,7 +759,7 @@  int mtk_drm_crtc_create(struct drm_device *drm_dev,
 	if (!mtk_crtc)
 		return -ENOMEM;
 
-	mtk_crtc->config_regs = priv->config_regs;
+	mtk_crtc->mmsys_dev = priv->mmsys_dev;
 	mtk_crtc->ddp_comp_nr = path_len;
 	mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr,
 						sizeof(*mtk_crtc->ddp_comp),
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index b885f60f474c..014c1bbe1df2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -13,26 +13,6 @@ 
 #include "mtk_drm_ddp.h"
 #include "mtk_drm_ddp_comp.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 MT2701_DISP_MUTEX0_MOD0			0x2c
 #define MT2701_DISP_MUTEX0_SOF0			0x30
 
@@ -94,48 +74,6 @@ 
 #define MUTEX_SOF_DSI2			5
 #define MUTEX_SOF_DSI3			6
 
-#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_disp_mutex {
 	int id;
@@ -246,200 +184,6 @@  static const struct mtk_ddp_data mt8173_ddp_driver_data = {
 	.mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0,
 };
 
-static unsigned int mtk_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_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_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_ddp_add_comp_to_path(void __iomem *config_regs,
-			      enum mtk_ddp_comp_id cur,
-			      enum mtk_ddp_comp_id next)
-{
-	unsigned int addr, value, reg;
-
-	value = mtk_ddp_mout_en(cur, next, &addr);
-	if (value) {
-		reg = readl_relaxed(config_regs + addr) | value;
-		writel_relaxed(reg, config_regs + addr);
-	}
-
-	mtk_ddp_sout_sel(config_regs, cur, next);
-
-	value = mtk_ddp_sel_in(cur, next, &addr);
-	if (value) {
-		reg = readl_relaxed(config_regs + addr) | value;
-		writel_relaxed(reg, config_regs + addr);
-	}
-}
-
-void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
-				   enum mtk_ddp_comp_id cur,
-				   enum mtk_ddp_comp_id next)
-{
-	unsigned int addr, value, reg;
-
-	value = mtk_ddp_mout_en(cur, next, &addr);
-	if (value) {
-		reg = readl_relaxed(config_regs + addr) & ~value;
-		writel_relaxed(reg, config_regs + addr);
-	}
-
-	value = mtk_ddp_sel_in(cur, next, &addr);
-	if (value) {
-		reg = readl_relaxed(config_regs + addr) & ~value;
-		writel_relaxed(reg, config_regs + addr);
-	}
-}
-
 struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id)
 {
 	struct mtk_ddp *ddp = dev_get_drvdata(dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
index 827be424a148..6b691a57be4a 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h
@@ -12,13 +12,6 @@  struct regmap;
 struct device;
 struct mtk_disp_mutex;
 
-void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
-			      enum mtk_ddp_comp_id cur,
-			      enum mtk_ddp_comp_id next);
-void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
-				   enum mtk_ddp_comp_id cur,
-				   enum mtk_ddp_comp_id next);
-
 struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id);
 int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex);
 void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 8e2d3cb62ad5..208f9c5256ef 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -10,6 +10,7 @@ 
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/pm_runtime.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
 #include <linux/dma-mapping.h>
 
 #include <drm/drm_atomic.h>
@@ -425,7 +426,6 @@  static int mtk_drm_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_drm_private *private;
-	struct resource *mem;
 	struct device_node *node;
 	struct component_match *match = NULL;
 	int ret;
@@ -436,14 +436,10 @@  static int mtk_drm_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	private->data = of_device_get_match_data(dev);
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	private->config_regs = devm_ioremap_resource(dev, mem);
-	if (IS_ERR(private->config_regs)) {
-		ret = PTR_ERR(private->config_regs);
-		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
-			ret);
-		return ret;
+	private->mmsys_dev = dev->parent;
+	if (!private->mmsys_dev) {
+		dev_err(dev, "Failed to get MMSYS device\n");
+		return -ENODEV;
 	}
 
 	/* Iterate over sibling DISP function blocks */
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index 17bc99b9f5d4..b5be63e53176 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -39,7 +39,7 @@  struct mtk_drm_private {
 
 	struct device_node *mutex_node;
 	struct device *mutex_dev;
-	void __iomem *config_regs;
+	struct device *mmsys_dev;
 	struct device_node *comp_node[DDP_COMPONENT_ID_MAX];
 	struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX];
 	const struct mtk_mmsys_driver_data *data;
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 473cdf732fb5..bb99a05fb278 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -5,14 +5,81 @@ 
  */
 
 #include <linux/clk-provider.h>
+#include <linux/device.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
 
 #include "../../clk/mediatek/clk-gate.h"
 #include "../../clk/mediatek/clk-mtk.h"
+#include "../../gpu/drm/mediatek/mtk_drm_ddp.h"
+#include "../../gpu/drm/mediatek/mtk_drm_ddp_comp.h"
 
 #include <dt-bindings/clock/mt8173-clk.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 const struct mtk_gate_regs mm0_cg_regs = {
 	.set_ofs = 0x0104,
 	.clr_ofs = 0x0108,
@@ -110,13 +177,223 @@  static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 	.gates_num = ARRAY_SIZE(mt8173_mm_clks),
 };
 
+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)
+{
+	void __iomem *config_regs = dev_get_drvdata(dev);
+	unsigned int addr, value, reg;
+
+	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
+	if (value) {
+		reg = readl_relaxed(config_regs + addr) | value;
+		writel_relaxed(reg, config_regs + addr);
+	}
+
+	mtk_mmsys_ddp_sout_sel(config_regs, cur, next);
+
+	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
+	if (value) {
+		reg = readl_relaxed(config_regs + addr) | value;
+		writel_relaxed(reg, config_regs + addr);
+	}
+}
+
+void mtk_mmsys_ddp_disconnect(struct device *dev,
+			      enum mtk_ddp_comp_id cur,
+			      enum mtk_ddp_comp_id next)
+{
+	void __iomem *config_regs = dev_get_drvdata(dev);
+	unsigned int addr, value, reg;
+
+	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
+	if (value) {
+		reg = readl_relaxed(config_regs + addr) & ~value;
+		writel_relaxed(reg, config_regs + addr);
+	}
+
+	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
+	if (value) {
+		reg = readl_relaxed(config_regs + addr) & ~value;
+		writel_relaxed(reg, config_regs + addr);
+	}
+}
+
 static int mtk_mmsys_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;
 	const struct mtk_mmsys_driver_data *data;
 	struct clk_onecell_data *clk_data;
+	struct device *dev = &pdev->dev;
+	void __iomem *config_regs;
+	struct resource *mem;
 	int ret;
 
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	config_regs = devm_ioremap_resource(dev, mem);
+	if (IS_ERR(config_regs)) {
+		ret = PTR_ERR(config_regs);
+		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
+			ret);
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, config_regs);
+
 	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
 	if (!clk_data)
 		return -ENOMEM;
diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
new file mode 100644
index 000000000000..7bab5d9a3d31
--- /dev/null
+++ b/include/linux/soc/mediatek/mtk-mmsys.h
@@ -0,0 +1,20 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ */
+
+#ifndef __MTK_MMSYS_H
+#define __MTK_MMSYS_H
+
+enum mtk_ddp_comp_id;
+struct device;
+
+void mtk_mmsys_ddp_connect(struct device *dev,
+			   enum mtk_ddp_comp_id cur,
+			   enum mtk_ddp_comp_id next);
+
+void mtk_mmsys_ddp_disconnect(struct device *dev,
+			      enum mtk_ddp_comp_id cur,
+			      enum mtk_ddp_comp_id next);
+
+#endif /* __MTK_MMSYS_H */