Re: [PATCH v9 5/7] drm/mediatek: Add connector dynamic selection capability for mt8188

From: CK Hu (胡俊光)
Date: Mon Sep 18 2023 - 03:07:58 EST

Next message: Pierre Gondois: "Re: [PATCH 1/1] cgroup/cpuset: Rebuild sched domains if isolated partition changed"
Previous message: Andy Shevchenko: "Re: [PATCH v3 2/2] gpio: sim: initialize a managed pointer when declaring it"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi, Jason:

On Thu, 2023-08-10 at 02:15 +0800, Jason-JH.Lin wrote:
> Add dynamic select available connector flow in mtk_drm_crtc_create()
> and mtk_drm_crtc_atomic_enable().
>
> In mtk_drm_crtc_create(), if there is a connector routes array in drm
> driver data, all components definded in the connector routes array
> will
> be checked and their encoder_index will be set.
>
> In mtk_drm_crtc_atomic_enable(), crtc will check its encoder_index to
> identify which componet in the connector routes array should append.
>
> Move DDP_COMPONENT_DP_INTF0 from mt8188_mtk_ddp_main array to a
> connector routes array called mt8188_mtk_ddp_main_routes to support
> dynamic selection capability for mt8188.
>
> 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_drm_crtc.c | 81
> ++++++++++++++++++++-
> 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 | 7 ++
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 20 ++++-
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 7 ++
> 6 files changed, 140 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index d40142842f85..c57012f9c0c8 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -62,6 +62,8 @@ struct mtk_drm_crtc {
> struct mtk_mutex *mutex;
> unsigned int ddp_comp_nr;
> struct mtk_ddp_comp **ddp_comp;
> + unsigned int num_conn_routes;
> + const struct mtk_drm_route *conn_routes;
>
> /* lock for display hardware access */
> struct mutex hw_lock;
> @@ -649,6 +651,47 @@ static void mtk_drm_crtc_disable_vblank(struct
> drm_crtc *crtc)
> mtk_ddp_comp_disable_vblank(comp);
> }
>
> +static void mtk_drm_crtc_update_output(struct drm_crtc *crtc,
> + struct drm_atomic_state *state)
> +{
> + 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;
> +
> + if (!crtc_state->connectors_changed)
> + return;
> +
> + if (!mtk_crtc->num_conn_routes)
> + return;
> +
> + priv = priv->all_drm_private[crtc_index];
> + dev = priv->dev;
> +
> + dev_dbg(dev, "connector change:%d, encoder mask:0x%x for
> crtc:%d\n",
> + crtc_state->connectors_changed, encoder_mask,
> crtc_index);
> +
> + for (i = 0; i < mtk_crtc->num_conn_routes; i++) {
> + struct mtk_ddp_comp *comp;
> +
> + comp_id = mtk_crtc->conn_routes[i].route_ddp;
> + comp = &priv->ddp_comp[comp_id];
> + if (comp->encoder_index >= 0 &&
> + encoder_mask & BIT(comp->encoder_index)) {
> + mtk_crtc->ddp_comp[mtk_crtc->ddp_comp_nr - 1] =
> comp;
> + dev_dbg(dev, "Add comp_id: %d at path index
> %d\n",
> + comp->id, mtk_crtc->ddp_comp_nr - 1);
> + break;
> + }
> + }
> +
> + dev_dbg(dev, "Update total comp num:%d", mtk_crtc-
> >ddp_comp_nr);

Why print this? You does not update comp num.

> +}
> +
> int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane
> *plane,
> struct mtk_plane_state *state)
> {
> @@ -681,6 +724,8 @@ static void mtk_drm_crtc_atomic_enable(struct
> drm_crtc *crtc,
>
> DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
>
> + mtk_drm_crtc_update_output(crtc, state);
> +
> 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 +931,8 @@ 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 num_conn_routes)
> {
> struct mtk_drm_private *priv = drm_dev->dev_private;
> struct device *dev = drm_dev->dev;
> @@ -1040,5 +1086,38 @@ int mtk_drm_crtc_create(struct drm_device
> *drm_dev,
> init_waitqueue_head(&mtk_crtc->cb_blocking_queue);
> }
> #endif
> +
> + if (conn_routes) {
> + struct device_node *node;
> + struct mtk_ddp_comp *comp;
> + unsigned int comp_id;
> +
> + for (i = 0; i < num_conn_routes; i++) {
> + comp_id = conn_routes[i].route_ddp;
> + node = priv->comp_node[comp_id];
> + comp = &priv->ddp_comp[comp_id];
> +
> + if (!comp->dev) {
> + dev_dbg(dev, "comp_id:%d, Component
> %pOF not initialized\n",

I would like add comment that we allow route component device is not
enabled make set comp->encoder_index to -1 to mark this.

> + comp_id, node);
> + comp->encoder_index = -1;
> + continue;
> + }
> +
> + mtk_ddp_comp_encoder_index_set(&priv-
> >ddp_comp[comp_id]);
> + }
> +
> + mtk_crtc->num_conn_routes = num_conn_routes;
> + mtk_crtc->conn_routes = conn_routes;
> +
> + /* append the last ddp_comp and ddp_comp_nr at the end
> of mtk_drm_crtc_create */
> + mtk_crtc->ddp_comp[mtk_crtc->ddp_comp_nr] =
> + devm_kmalloc(dev, sizeof(*mtk_crtc->ddp_comp),
> GFP_KERNEL);

mtk_crtc->ddp_comp[mtk_crtc->ddp_comp_nr] is not valid here. You may
increase mtk_crtc->ddp_comp_nr before mtk_crtc->ddp_comp is allocated.

> + if (!mtk_crtc->ddp_comp[mtk_crtc->ddp_comp_nr])
> + return -ENOMEM;
> +
> + mtk_crtc->ddp_comp_nr++;
> + }
> +
> return 0;
> }
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> index 3e9046993d09..3c224595fa71 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 num_conn_routes);
> 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 effaaa769b46..c1ea112e6be8 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -508,6 +508,23 @@ 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 num_routes,
> + struct mtk_ddp_comp
> *ddp_comp)
> +{
> + unsigned int i;
> +
> + if (!routes)
> + return -EINVAL;
> +
> + for (i = 0; i < num_routes; i++)
> + if (dev == ddp_comp[routes[i].route_ddp].dev)
> + return BIT(routes[i].crtc_id);
> +
> + return -ENODEV;
> +}
> +
> int mtk_ddp_comp_get_id(struct device_node *node,
> enum mtk_ddp_comp_type comp_type)
> {
> @@ -539,7 +556,15 @@ unsigned int
> mtk_drm_find_possible_crtc_by_comp(struct drm_device *drm,
> private->data->third_len,
> private->ddp_comp))
> ret = BIT(2);
> else
> - DRM_INFO("Failed to find comp in ddp table\n");
> + ret = mtk_drm_find_comp_in_ddp_conn_path(dev,
> + private->data-
> >conn_routes,
> + private->data-
> >num_conn_routes,
> + private-
> >ddp_comp);
> +
> + if (ret <= 0) {
> + DRM_INFO("Failed to find comp in ddp table, ret =%d\n",
> ret);
> + ret = 0;
> + }
>
> 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 326cb57a18c9..d16c9cb20199 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> @@ -87,6 +87,7 @@ struct mtk_ddp_comp {
> struct device *dev;
> int irq;
> unsigned int id;
> + unsigned int encoder_index;
> const struct mtk_ddp_comp_funcs *funcs;
> };
>
> @@ -276,6 +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);
> +}

I would like this to be a separate patch of adding ddp comp encoder
index interface. Part of [4/7] would be that patch also.

> +
> 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 c12886f31e54..9900007667a2 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -185,7 +185,10 @@ static const unsigned int mt8188_mtk_ddp_main[]
> = {
> DDP_COMPONENT_GAMMA,
> DDP_COMPONENT_POSTMASK0,
> DDP_COMPONENT_DITHER0,
> - DDP_COMPONENT_DP_INTF0,
> +};
> +
> +static const struct mtk_drm_route mt8188_mtk_ddp_main_routes[] = {
> + {0, DDP_COMPONENT_DP_INTF0},
> };

I would like separate mt8188 modification to another patch and make
this patch independent of each SoC.

>
> static const unsigned int mt8192_mtk_ddp_main[] = {
> @@ -287,6 +290,8 @@ 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,
> + .num_conn_routes = ARRAY_SIZE(mt8188_mtk_ddp_main_routes),
> .mmsys_dev_num = 1,
> };
>
> @@ -419,6 +424,11 @@ 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->num_conn_routes)
> + for (i = 0; i < drv_data->num_conn_routes; i++)
> + if (drv_data->conn_routes[i].route_ddp ==
> comp_id)
> + return true;
> +
> return false;
> }
>
> @@ -477,21 +487,23 @@ static int mtk_drm_kms_init(struct drm_device
> *drm)
>
> if (i == CRTC_MAIN && 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-
> >num_conn_routes);
> if (ret)
> goto err_component_unbind;
>
> continue;
> } else if (i == CRTC_EXT && 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 == CRTC_THIRD && 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 f4de8bb27685..6f98fff4f1a4 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> @@ -28,6 +28,11 @@ struct drm_fb_helper;
> struct drm_property;
> struct regmap;
>
> +struct mtk_drm_route {
> + const unsigned int crtc_id;
> + const unsigned int route_ddp;
> +};
> +
> struct mtk_mmsys_driver_data {
> const unsigned int *main_path;
> unsigned int main_len;
> @@ -35,6 +40,8 @@ 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 num_conn_routes;
>
> bool shadow_register;
> unsigned int mmsys_id;

Next message: Pierre Gondois: "Re: [PATCH 1/1] cgroup/cpuset: Rebuild sched domains if isolated partition changed"
Previous message: Andy Shevchenko: "Re: [PATCH v3 2/2] gpio: sim: initialize a managed pointer when declaring it"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]