Re: [PATCH v2 1/2] drm/mediatek: Add ability to support dynamic connector selection

[Jason-JH Lin (林睿祥)]

Hi Matthias,

Thanks for the reviews.

On Thu, 2023-04-27 at 14:17 +0200, Matthias Brugger wrote:
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
> 
> 
> On 27/04/2023 10:40, Jason-JH.Lin wrote:
> > 1. Move output drm connector from each ddp_path array to connector
> > array.
> > 2. Add dynamic select available connector flow in crtc create and
> > enable.
> > 
> > Signed-off-by: Nancy Lin <nancy.lin@xxxxxxxxxxxx>
> > Signed-off-by: Nathan Lu <nathan.lu@xxxxxxxxxxxx>
> > Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
> > ---
> >   drivers/gpu/drm/mediatek/mtk_disp_drv.h     |   1 +
> >   drivers/gpu/drm/mediatek/mtk_dpi.c          |   9 ++
> >   drivers/gpu/drm/mediatek/mtk_drm_crtc.c     | 112
> > +++++++++++++++++++-
> >   drivers/gpu/drm/mediatek/mtk_drm_crtc.h     |   5 +-
> >   drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |  27 +++++
> >   drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h |   8 ++
> >   drivers/gpu/drm/mediatek/mtk_drm_drv.c      |  44 ++++++--
> >   drivers/gpu/drm/mediatek/mtk_drm_drv.h      |   8 ++
> >   8 files changed, 203 insertions(+), 11 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > index 2254038519e1..72c57442f965 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > @@ -44,6 +44,7 @@ void mtk_dither_set_common(void __iomem *regs,
> > struct cmdq_client_reg *cmdq_reg,
> > 
> >   void mtk_dpi_start(struct device *dev);
> >   void mtk_dpi_stop(struct device *dev);
> > +int mtk_dpi_encoder_index(struct device *dev);
> > 
> >   void mtk_dsi_ddp_start(struct device *dev);
> >   void mtk_dsi_ddp_stop(struct device *dev);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > index 948a53f1f4b3..765fc976e41f 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > @@ -782,6 +782,15 @@ void mtk_dpi_stop(struct device *dev)
> >       mtk_dpi_power_off(dpi);
> >   }
> > 
> > +int mtk_dpi_encoder_index(struct device *dev)
> > +{
> > +     struct mtk_dpi *dpi = dev_get_drvdata(dev);
> > +     int encoder_index = drm_encoder_index(&dpi->encoder);
> > +
> > +     dev_dbg(dev, "encoder index:%d", encoder_index);
> > +     return encoder_index;
> > +}
> > +
> >   static int mtk_dpi_bind(struct device *dev, struct device
> > *master, void *data)
> >   {
> >       struct mtk_dpi *dpi = dev_get_drvdata(dev);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > index d40142842f85..2bafd377dcf4 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > @@ -60,8 +60,12 @@ struct mtk_drm_crtc {
> >       struct device                   *mmsys_dev;
> >       struct device                   *dma_dev;
> >       struct mtk_mutex                *mutex;
> > +     unsigned int                    ddp_comp_nr_ori;
> > +     unsigned int                    max_ddp_comp_nr;
> >       unsigned int                    ddp_comp_nr;
> >       struct mtk_ddp_comp             **ddp_comp;
> > +     unsigned int                    conn_route_nr;
> > +     const struct mtk_drm_route      *conn_routes;
> > 
> >       /* lock for display hardware access */
> >       struct mutex                    hw_lock;
> > @@ -649,6 +653,85 @@ static void mtk_drm_crtc_disable_vblank(struct
> > drm_crtc *crtc)
> >       mtk_ddp_comp_disable_vblank(comp);
> >   }
> > 
> > +static unsigned int mtk_drm_crtc_max_num_route_comp(struct
> > mtk_drm_crtc *mtk_crtc)
> > +{
> > +     unsigned int max_num = 0;
> > +     unsigned int i;
> > +
> > +     if (!mtk_crtc->conn_route_nr)
> > +             return 0;
> > +
> > +     for (i = 0; i < mtk_crtc->conn_route_nr; i++)
> > +             if (max_num < mtk_crtc->conn_routes[i].route_len)
> > +                     max_num = mtk_crtc->conn_routes[i].route_len;
> 
> max_num = max(mtk_crtc->conn_routes[i].route_len, max_num);
> 
> Regards,
> Matthias
> 

OK, I'll change this at the next version.

Regards,
Jason-JH.Lin

> > +
> > +     return max_num;
> > +}
> > +
> > +static int mtk_drm_crtc_update_output(struct drm_crtc *crtc,
> > +                                   struct drm_atomic_state *state)
> > +{
> > +     const struct mtk_drm_route *conn_routes;
> > +     int crtc_index = drm_crtc_index(crtc);
> > +     int i;
> > +     struct device *dev;
> > +     struct drm_crtc_state *crtc_state = state-
> > >crtcs[crtc_index].new_state;
> > +     struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
> > +     struct mtk_drm_private *priv = crtc->dev->dev_private;
> > +     unsigned int comp_id;
> > +     unsigned int encoder_mask = crtc_state->encoder_mask;
> > +     unsigned int route_len = 0, route_index = 0;
> > +
> > +     if (!mtk_crtc->conn_route_nr)
> > +             return 0;
> > +
> > +     priv = priv->all_drm_private[crtc_index];
> > +     dev = priv->dev;
> > +
> > +     dev_dbg(dev, "connector change:%d, encoder mask0x%x for
> > crtc%d",
> > +             crtc_state->connectors_changed, encoder_mask,
> > crtc_index);
> > +
> > +     if (!crtc_state->connectors_changed)
> > +             return 0;
> > +
> > +     conn_routes = mtk_crtc->conn_routes;
> > +
> > +     for (i = 0; i < mtk_crtc->conn_route_nr; i++) {
> > +             route_len = conn_routes[i].route_len;
> > +             if (route_len > 0) {
> > +                     comp_id = conn_routes[i].route_ddp[route_len
> > - 1];
> > +                     if (priv->comp_node[comp_id]) {
> > +                             if ((1 << priv-
> > >ddp_comp[comp_id].encoder_index) == encoder_mask) {
> > +                                     route_index = i;
> > +                                     break;
> > +                             }
> > +                     }
> > +             }
> > +     }
> > +
> > +     for (i = 0; i < route_len; i++) {
> > +             struct mtk_ddp_comp *comp;
> > +             struct device_node *node;
> > +
> > +             comp_id = conn_routes[route_index].route_ddp[i];
> > +             node = priv->comp_node[comp_id];
> > +             comp = &priv->ddp_comp[comp_id];
> > +             if (!comp) {
> > +                     dev_err(dev, "Component %pOF not
> > initialized\n", node);
> > +                     return -ENODEV;
> > +             }
> > +
> > +             mtk_crtc->ddp_comp[mtk_crtc->ddp_comp_nr_ori + i] =
> > comp;
> > +             dev_dbg(dev, "Add comp_id: %d at path index %d\n",
> > +                     comp->id, mtk_crtc->ddp_comp_nr_ori + i);
> > +     }
> > +
> > +     mtk_crtc->ddp_comp_nr = mtk_crtc->ddp_comp_nr_ori +
> > route_len;
> > +     dev_dbg(dev, "Update total comp num:%d", mtk_crtc-
> > >ddp_comp_nr);
> > +
> > +     return 0;
> > +}
> > +
> >   int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct
> > drm_plane *plane,
> >                            struct mtk_plane_state *state)
> >   {
> > @@ -681,6 +764,12 @@ static void mtk_drm_crtc_atomic_enable(struct
> > drm_crtc *crtc,
> > 
> >       DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
> > 
> > +     ret = mtk_drm_crtc_update_output(crtc, state);
> > +     if (ret < 0) {
> > +             DRM_DEV_ERROR(comp->dev, "Failed to update crtc
> > output: %d\n", ret);
> > +             return;
> > +     }
> > +
> >       ret = pm_runtime_resume_and_get(comp->dev);
> >       if (ret < 0) {
> >               DRM_DEV_ERROR(comp->dev, "Failed to enable power
> > domain: %d\n", ret);
> > @@ -886,7 +975,8 @@ struct device *mtk_drm_crtc_dma_dev_get(struct
> > drm_crtc *crtc)
> > 
> >   int mtk_drm_crtc_create(struct drm_device *drm_dev,
> >                       const unsigned int *path, unsigned int
> > path_len,
> > -                     int priv_data_index)
> > +                     int priv_data_index, const struct
> > mtk_drm_route *conn_routes,
> > +                     unsigned int conn_routes_num)
> >   {
> >       struct mtk_drm_private *priv = drm_dev->dev_private;
> >       struct device *dev = drm_dev->dev;
> > @@ -898,6 +988,7 @@ int mtk_drm_crtc_create(struct drm_device
> > *drm_dev,
> >       uint gamma_lut_size = 0;
> >       struct drm_crtc *tmp;
> >       int crtc_i = 0;
> > +     unsigned int route_len = 0, max_route_comp_num = 0;
> > 
> >       if (!path)
> >               return 0;
> > @@ -937,7 +1028,24 @@ int mtk_drm_crtc_create(struct drm_device
> > *drm_dev,
> > 
> >       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,
> > +     mtk_crtc->ddp_comp_nr_ori = path_len;
> > +     if (conn_routes) {
> > +             unsigned int comp_id;
> > +
> > +             for (i = 0; i < conn_routes_num; i++) {
> > +                     route_len = conn_routes[i].route_len;
> > +                     if (route_len > 0) {
> > +                             comp_id =
> > conn_routes[i].route_ddp[route_len - 1];
> > +                             mtk_ddp_comp_encoder_index_set(&priv-
> > >ddp_comp[comp_id]);
> > +                     }
> > +             }
> > +
> > +             mtk_crtc->conn_route_nr = conn_routes_num;
> > +             mtk_crtc->conn_routes = conn_routes;
> > +     }
> > +     max_route_comp_num =
> > mtk_drm_crtc_max_num_route_comp(mtk_crtc);
> > +     mtk_crtc->max_ddp_comp_nr  = mtk_crtc->ddp_comp_nr +
> > max_route_comp_num;
> > +     mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc-
> > >max_ddp_comp_nr,
> >                                               sizeof(*mtk_crtc-
> > >ddp_comp),
> >                                               GFP_KERNEL);
> >       if (!mtk_crtc->ddp_comp)
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> > b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> > index 3e9046993d09..672b9c7afee6 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> > @@ -8,6 +8,7 @@
> > 
> >   #include <drm/drm_crtc.h>
> >   #include "mtk_drm_ddp_comp.h"
> > +#include "mtk_drm_drv.h"
> >   #include "mtk_drm_plane.h"
> > 
> >   #define MTK_LUT_SIZE        512
> > @@ -18,7 +19,9 @@ void mtk_drm_crtc_commit(struct drm_crtc *crtc);
> >   int mtk_drm_crtc_create(struct drm_device *drm_dev,
> >                       const unsigned int *path,
> >                       unsigned int path_len,
> > -                     int priv_data_index);
> > +                     int priv_data_index,
> > +                     const struct mtk_drm_route *conn_routes,
> > +                     unsigned int conn_routes_num);
> >   int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct
> > drm_plane *plane,
> >                            struct mtk_plane_state *state);
> >   void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct
> > drm_plane *plane,
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > index f114da4d36a9..fe20ce26b19f 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > @@ -304,6 +304,7 @@ static const struct mtk_ddp_comp_funcs
> > ddp_dither = {
> >   static const struct mtk_ddp_comp_funcs ddp_dpi = {
> >       .start = mtk_dpi_start,
> >       .stop = mtk_dpi_stop,
> > +     .encoder_index = mtk_dpi_encoder_index,
> >   };
> > 
> >   static const struct mtk_ddp_comp_funcs ddp_dsc = {
> > @@ -507,6 +508,26 @@ static bool mtk_drm_find_comp_in_ddp(struct
> > device *dev,
> >       return false;
> >   }
> > 
> > +static int mtk_drm_find_comp_in_ddp_conn_path(struct device *dev,
> > +                                           const struct
> > mtk_drm_route *routes,
> > +                                           unsigned int
> > routes_num,
> > +                                           struct mtk_ddp_comp
> > *ddp_comp)
> > +{
> > +     unsigned int i;
> > +
> > +     if (!routes)
> > +             return 0;
> > +
> > +     for (i = 0; i < routes_num; i++)
> > +             if (mtk_drm_find_comp_in_ddp(dev,
> > routes[i].route_ddp,
> > +                                          routes[i].route_len,
> > ddp_comp))
> > +                     return BIT(routes[i].crtc_id);
> > +
> > +     DRM_INFO("Failed to find comp in ddp connector table\n");
> > +
> > +     return 0;
> > +}
> > +
> >   int mtk_ddp_comp_get_id(struct device_node *node,
> >                       enum mtk_ddp_comp_type comp_type)
> >   {
> > @@ -538,6 +559,12 @@ unsigned int
> > mtk_drm_find_possible_crtc_by_comp(struct drm_device *drm,
> >                                         private->data->third_len,
> > private->ddp_comp))
> >               ret = BIT(2);
> >       else
> > +             ret = mtk_drm_find_comp_in_ddp_conn_path(dev,
> > +                                                      private-
> > >data->conn_routes,
> > +                                                      private-
> > >data->conn_routes_num,
> > +                                                      private-
> > >ddp_comp);
> > +
> > +     if (ret == 0)
> >               DRM_INFO("Failed to find comp in ddp table\n");
> > 
> >       return ret;
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> > b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> > index febcaeef16a1..1c1d670cfe41 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> > @@ -80,6 +80,7 @@ struct mtk_ddp_comp_funcs {
> >       void (*disconnect)(struct device *dev, struct device
> > *mmsys_dev, unsigned int next);
> >       void (*add)(struct device *dev, struct mtk_mutex *mutex);
> >       void (*remove)(struct device *dev, struct mtk_mutex *mutex);
> > +     int (*encoder_index)(struct device *dev);
> >   };
> > 
> >   struct mtk_ddp_comp {
> > @@ -87,6 +88,7 @@ struct mtk_ddp_comp {
> >       int irq;
> >       unsigned int id;
> >       const struct mtk_ddp_comp_funcs *funcs;
> > +     int encoder_index;
> >   };
> > 
> >   static inline int mtk_ddp_comp_clk_enable(struct mtk_ddp_comp
> > *comp)
> > @@ -275,6 +277,12 @@ static inline bool
> > mtk_ddp_comp_disconnect(struct mtk_ddp_comp *comp, struct dev
> >       return false;
> >   }
> > 
> > +static inline void mtk_ddp_comp_encoder_index_set(struct
> > mtk_ddp_comp *comp)
> > +{
> > +     if (comp->funcs && comp->funcs->encoder_index)
> > +             comp->encoder_index = comp->funcs-
> > >encoder_index(comp->dev);
> > +}
> > +
> >   int mtk_ddp_comp_get_id(struct device_node *node,
> >                       enum mtk_ddp_comp_type comp_type);
> >   unsigned int mtk_drm_find_possible_crtc_by_comp(struct drm_device
> > *drm,
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> > b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> > index 6dcb4ba2466c..d8c49614a107 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> > @@ -185,7 +185,14 @@ static const unsigned int
> > mt8188_mtk_ddp_main[] = {
> >       DDP_COMPONENT_GAMMA,
> >       DDP_COMPONENT_POSTMASK0,
> >       DDP_COMPONENT_DITHER0,
> > -     DDP_COMPONENT_DP_INTF0,
> > +};
> > +
> > +static const unsigned int mt8188_mtk_ddp_main_routes_0[] = {
> > +     DDP_COMPONENT_DP_INTF0
> > +};
> > +
> > +static const struct mtk_drm_route mt8188_mtk_ddp_main_routes[] = {
> > +     {0, ARRAY_SIZE(mt8188_mtk_ddp_main_routes_0),
> > mt8188_mtk_ddp_main_routes_0},
> >   };
> > 
> >   static const unsigned int mt8192_mtk_ddp_main[] = {
> > @@ -287,6 +294,9 @@ static const struct mtk_mmsys_driver_data
> > mt8186_mmsys_driver_data = {
> >   static const struct mtk_mmsys_driver_data
> > mt8188_vdosys0_driver_data = {
> >       .main_path = mt8188_mtk_ddp_main,
> >       .main_len = ARRAY_SIZE(mt8188_mtk_ddp_main),
> > +     .conn_routes = mt8188_mtk_ddp_main_routes,
> > +     .conn_routes_num = ARRAY_SIZE(mt8188_mtk_ddp_main_routes),
> > +     .mmsys_dev_num = 1,
> >   };
> > 
> >   static const struct mtk_mmsys_driver_data
> > mt8192_mmsys_driver_data = {
> > @@ -350,6 +360,7 @@ static bool mtk_drm_get_all_drm_priv(struct
> > device *dev)
> >   {
> >       struct mtk_drm_private *drm_priv = dev_get_drvdata(dev);
> >       struct mtk_drm_private *all_drm_priv[MAX_CRTC];
> > +     struct mtk_drm_private *temp_drm_priv;
> >       struct device_node *phandle = dev->parent->of_node;
> >       const struct of_device_id *of_id;
> >       struct device_node *node;
> > @@ -372,9 +383,18 @@ static bool mtk_drm_get_all_drm_priv(struct
> > device *dev)
> >               if (!drm_dev || !dev_get_drvdata(drm_dev))
> >                       continue;
> > 
> > -             all_drm_priv[cnt] = dev_get_drvdata(drm_dev);
> > -             if (all_drm_priv[cnt] && all_drm_priv[cnt]-
> > >mtk_drm_bound)
> > -                     cnt++;
> > +             temp_drm_priv = dev_get_drvdata(drm_dev);
> > +             if (temp_drm_priv) {
> > +                     if (temp_drm_priv->mtk_drm_bound)
> > +                             cnt++;
> > +
> > +                     if (temp_drm_priv->data->main_len)
> > +                             all_drm_priv[0] = temp_drm_priv;
> > +                     else if (temp_drm_priv->data->ext_len)
> > +                             all_drm_priv[1] = temp_drm_priv;
> > +                     else if (temp_drm_priv->data->third_len)
> > +                             all_drm_priv[2] = temp_drm_priv;
> > +             }
> >       }
> > 
> >       if (drm_priv->data->mmsys_dev_num == cnt) {
> > @@ -391,7 +411,7 @@ static bool mtk_drm_get_all_drm_priv(struct
> > device *dev)
> >   static bool mtk_drm_find_mmsys_comp(struct mtk_drm_private
> > *private, int comp_id)
> >   {
> >       const struct mtk_mmsys_driver_data *drv_data = private->data;
> > -     int i;
> > +     int i, j;
> > 
> >       if (drv_data->main_path)
> >               for (i = 0; i < drv_data->main_len; i++)
> > @@ -408,6 +428,12 @@ static bool mtk_drm_find_mmsys_comp(struct
> > mtk_drm_private *private, int comp_id
> >                       if (drv_data->third_path[i] == comp_id)
> >                               return true;
> > 
> > +     if (drv_data->conn_routes_num)
> > +             for (i = 0; i < drv_data->conn_routes_num; i++)
> > +                     for (j = 0; j < drv_data-
> > >conn_routes[i].route_len; j++)
> > +                             if (drv_data-
> > >conn_routes[i].route_ddp[j] == comp_id)
> > +                                     return true;
> > +
> >       return false;
> >   }
> > 
> > @@ -466,21 +492,23 @@ static int mtk_drm_kms_init(struct drm_device
> > *drm)
> > 
> >                       if (i == 0 && priv_n->data->main_len) {
> >                               ret = mtk_drm_crtc_create(drm,
> > priv_n->data->main_path,
> > -                                                       priv_n-
> > >data->main_len, j);
> > +                                                       priv_n-
> > >data->main_len, j,
> > +                                                       priv_n-
> > >data->conn_routes,
> > +                                                       priv_n-
> > >data->conn_routes_num);
> >                               if (ret)
> >                                       goto err_component_unbind;
> > 
> >                               continue;
> >                       } else if (i == 1 && priv_n->data->ext_len) {
> >                               ret = mtk_drm_crtc_create(drm,
> > priv_n->data->ext_path,
> > -                                                       priv_n-
> > >data->ext_len, j);
> > +                                                       priv_n-
> > >data->ext_len, j, NULL, 0);
> >                               if (ret)
> >                                       goto err_component_unbind;
> > 
> >                               continue;
> >                       } else if (i == 2 && priv_n->data->third_len) 
> > {
> >                               ret = mtk_drm_crtc_create(drm,
> > priv_n->data->third_path,
> > -                                                       priv_n-
> > >data->third_len, j);
> > +                                                       priv_n-
> > >data->third_len, j, NULL, 0);
> >                               if (ret)
> >                                       goto err_component_unbind;
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> > b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> > index eb2fd45941f0..8dca68ea1b94 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> > @@ -22,6 +22,12 @@ struct drm_fb_helper;
> >   struct drm_property;
> >   struct regmap;
> > 
> > +struct mtk_drm_route {
> > +     const unsigned int crtc_id;
> > +     const unsigned int route_len;
> > +     const unsigned int *route_ddp;
> > +};
> > +
> >   struct mtk_mmsys_driver_data {
> >       const unsigned int *main_path;
> >       unsigned int main_len;
> > @@ -29,6 +35,8 @@ struct mtk_mmsys_driver_data {
> >       unsigned int ext_len;
> >       const unsigned int *third_path;
> >       unsigned int third_len;
> > +     const struct mtk_drm_route *conn_routes;
> > +     unsigned int conn_routes_num;
> > 
> >       bool shadow_register;
> >       unsigned int mmsys_id;