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Message-ID: <69e38d0d25a5a9a76648ae1133608aab8a04b947.camel@mediatek.com>
Date: Fri, 6 Oct 2023 07:30:51 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: Jason-JH Lin (林睿祥)
<Jason-JH.Lin@...iatek.com>,
"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
"angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Singo Chang (張興國)
<Singo.Chang@...iatek.com>,
Johnson Wang (王聖鑫)
<Johnson.Wang@...iatek.com>,
Jason-ch Chen (陳建豪)
<Jason-ch.Chen@...iatek.com>,
Shawn Sung (宋孝謙)
<Shawn.Sung@...iatek.com>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
Nancy Lin (林欣螢) <Nancy.Lin@...iatek.com>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
Project_Global_Chrome_Upstream_Group
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
Nathan Lu (呂東霖) <Nathan.Lu@...iatek.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"matthias.bgg@...il.com" <matthias.bgg@...il.com>
Subject: Re: [PATCH v11 5/9] drm/mediatek: Add connector dynamic selection
capability
Hi, Jason:
On Wed, 2023-10-04 at 10:40 +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.
Reviewed-by: CK Hu <ck.hu@...iatek.com>
>
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> Signed-off-by: Nancy Lin <nancy.lin@...iatek.com>
> Signed-off-by: Nathan Lu <nathan.lu@...iatek.com>
> Tested-by: Fei Shao <fshao@...omium.org>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 72
> ++++++++++++++++++++-
> drivers/gpu/drm/mediatek/mtk_drm_crtc.h | 5 +-
> drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 30 ++++++++-
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 13 +++-
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 7 ++
> 5 files changed, 120 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index b6fa4ad2f94d..742218691080 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -63,6 +63,8 @@ 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;
> @@ -647,6 +649,43 @@ 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;
> + unsigned int encoder_mask = crtc_state->encoder_mask;
> +
> + if (!crtc_state->connectors_changed)
> + return;
> +
> + if (!mtk_crtc->num_conn_routes)
> + return;
> +
> + priv = ((struct mtk_drm_private *)crtc->dev->dev_private)-
> >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++) {
> + unsigned int comp_id = mtk_crtc-
> >conn_routes[i].route_ddp;
> + struct mtk_ddp_comp *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;
> + }
> + }
> +}
> +
> int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane
> *plane,
> struct mtk_plane_state *state)
> {
> @@ -685,6 +724,8 @@ static void mtk_drm_crtc_atomic_enable(struct
> drm_crtc *crtc,
> return;
> }
>
> + mtk_drm_crtc_update_output(crtc, state);
> +
> ret = mtk_crtc_ddp_hw_init(mtk_crtc);
> if (ret) {
> pm_runtime_put(comp->dev);
> @@ -884,7 +925,8 @@ 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;
> @@ -935,7 +977,8 @@ 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 = devm_kmalloc_array(dev,
> + mtk_crtc->ddp_comp_nr +
> (conn_routes ? 1 : 0),
> sizeof(*mtk_crtc-
> >ddp_comp),
> GFP_KERNEL);
> if (!mtk_crtc->ddp_comp)
> @@ -1038,5 +1081,30 @@ int mtk_drm_crtc_create(struct drm_device
> *drm_dev,
> init_waitqueue_head(&mtk_crtc->cb_blocking_queue);
> }
> #endif
> +
> + if (conn_routes) {
> + for (i = 0; i < num_conn_routes; i++) {
> + unsigned int comp_id =
> conn_routes[i].route_ddp;
> + struct device_node *node = priv-
> >comp_node[comp_id];
> + struct mtk_ddp_comp *comp = &priv-
> >ddp_comp[comp_id];
> +
> + if (!comp->dev) {
> + dev_dbg(dev, "comp_id:%d, Component
> %pOF not initialized\n",
> + comp_id, node);
> + /* mark encoder_index to -1, if route
> comp device is not enabled */
> + 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;
> +
> + /* increase ddp_comp_nr at the end of
> mtk_drm_crtc_create */
> + 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 771f4e173353..02f0ada3754b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -507,6 +507,31 @@ static bool mtk_drm_find_comp_in_ddp(struct
> device *dev,
> return false;
> }
>
> +static unsigned 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)
> +{
> + int ret;
> + unsigned int i;
> +
> + if (!routes) {
> + ret = -EINVAL;
> + goto err;
> + }
> +
> + for (i = 0; i < num_routes; i++)
> + if (dev == ddp_comp[routes[i].route_ddp].dev)
> + return BIT(routes[i].crtc_id);
> +
> + ret = -ENODEV;
> +err:
> +
> + DRM_INFO("Failed to find comp in ddp table, ret = %d\n", ret);
> +
> + return 0;
> +}
> +
> int mtk_ddp_comp_get_id(struct device_node *node,
> enum mtk_ddp_comp_type comp_type)
> {
> @@ -538,7 +563,10 @@ 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);
>
> return ret;
> }
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index bf4a04c1156b..5d2e191b4106 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -424,6 +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;
> }
>
> @@ -482,21 +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;
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