Re: [PATCH v12 4/5] soc / drm: mediatek: Move routing control to mmsys device
From: CK Hu
Date: Wed Mar 25 2020 - 19:13:59 EST
Hi, Matthias:
On Wed, 2020-03-25 at 17:16 +0100, Matthias Brugger wrote:
>
> On 11/03/2020 17:53, 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.
> >
> > Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
> > Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
> > Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
> > Acked-by: CK Hu <ck.hu@xxxxxxxxxxxx>
>
> This patch does not apply against v5.6-rc1.
> Please rebase as this is a quite big patch and it won't be easy to do that by hand.
I think this patch depends on [1] which has been acked by me and I have
not picked it. The simple way is that you pick [1] first and then pick
this series.
[1]
https://patchwork.kernel.org/patch/11406227/
Regards,
CK
>
> Regards,
> Matthias
>
> > ---
> >
> > Changes in v12: None
> > Changes in v10:
> > - Select CONFIG_MTK_MMSYS (CK)
> > - Pass device pointer of mmsys device instead of config regs (CK)
> >
> > Changes in v9:
> > - Introduced a new patch to move routing control into mmsys driver.
> > - Removed the patch to use regmap as is not needed anymore.
> >
> > 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 | 279 ++++++++++++++++++++++++
> > include/linux/soc/mediatek/mtk-mmsys.h | 20 ++
> > 8 files changed, 316 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 0e05683d7b53..579a5a5d4472 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);
> > }
> > @@ -761,7 +762,7 @@ 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 dbdfedd302fa..4b286b525cd3 100644
> > --- a/drivers/soc/mediatek/mtk-mmsys.c
> > +++ b/drivers/soc/mediatek/mtk-mmsys.c
> > @@ -5,8 +5,76 @@
> > */
> >
> > #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 "../../gpu/drm/mediatek/mtk_drm_ddp.h"
> > +#include "../../gpu/drm/mediatek/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 OVL0_MOUT_EN_COLOR0 0x1
> > +#define OD_MOUT_EN_RDMA0 0x1
> > +#define OD1_MOUT_EN_RDMA1 BIT(16)
> > +#define UFOE_MOUT_EN_DSI0 0x1
> > +#define COLOR0_SEL_IN_OVL0 0x1
> > +#define OVL1_MOUT_EN_COLOR1 0x1
> > +#define GAMMA_MOUT_EN_RDMA1 0x1
> > +#define RDMA0_SOUT_DPI0 0x2
> > +#define RDMA0_SOUT_DPI1 0x3
> > +#define RDMA0_SOUT_DSI1 0x1
> > +#define RDMA0_SOUT_DSI2 0x4
> > +#define RDMA0_SOUT_DSI3 0x5
> > +#define RDMA1_SOUT_DPI0 0x2
> > +#define RDMA1_SOUT_DPI1 0x3
> > +#define RDMA1_SOUT_DSI1 0x1
> > +#define RDMA1_SOUT_DSI2 0x4
> > +#define RDMA1_SOUT_DSI3 0x5
> > +#define RDMA2_SOUT_DPI0 0x2
> > +#define RDMA2_SOUT_DPI1 0x3
> > +#define RDMA2_SOUT_DSI1 0x1
> > +#define RDMA2_SOUT_DSI2 0x4
> > +#define RDMA2_SOUT_DSI3 0x5
> > +#define DPI0_SEL_IN_RDMA1 0x1
> > +#define DPI0_SEL_IN_RDMA2 0x3
> > +#define DPI1_SEL_IN_RDMA1 (0x1 << 8)
> > +#define DPI1_SEL_IN_RDMA2 (0x3 << 8)
> > +#define DSI0_SEL_IN_RDMA1 0x1
> > +#define DSI0_SEL_IN_RDMA2 0x4
> > +#define DSI1_SEL_IN_RDMA1 0x1
> > +#define DSI1_SEL_IN_RDMA2 0x4
> > +#define DSI2_SEL_IN_RDMA1 (0x1 << 16)
> > +#define DSI2_SEL_IN_RDMA2 (0x4 << 16)
> > +#define DSI3_SEL_IN_RDMA1 (0x1 << 16)
> > +#define DSI3_SEL_IN_RDMA2 (0x4 << 16)
> > +#define COLOR1_SEL_IN_OVL1 0x1
> > +
> > +#define OVL_MOUT_EN_RDMA 0x1
> > +#define BLS_TO_DSI_RDMA1_TO_DPI1 0x8
> > +#define BLS_TO_DPI_RDMA1_TO_DSI 0x2
> > +#define DSI_SEL_IN_BLS 0x0
> > +#define DPI_SEL_IN_BLS 0x0
> > +#define DSI_SEL_IN_RDMA 0x1
> >
> > struct mtk_mmsys_driver_data {
> > const char *clk_driver;
> > @@ -16,10 +84,221 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
> > .clk_driver = "clk-mt8173-mm",
> > };
> >
> > +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)
> > {
> > const struct mtk_mmsys_driver_data *data;
> > + struct device *dev = &pdev->dev;
> > struct platform_device *clks;
> > + 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);
> >
> > data = of_device_get_match_data(&pdev->dev);
> >
> > 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 */
> >