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SubjectRe: [PATCH 1/2] drm/mediatek: Add ability to support dynamic connector selection
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Hi Jason,

Can you give me the based git tree/branch for this series please ?
I want to do a non-regression test for mt8365-evk board.

Feedback below:

On 05/04/2023 16:51, 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.
> snip...
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index d40142842f85..5ff20d0de29b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -60,8 +60,13 @@ struct mtk_drm_crtc {
> struct device *mmsys_dev;
> struct device *dma_dev;
> struct mtk_mutex *mutex;
> +

Remove this extra line please.

> + 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 +654,85 @@ 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++)
> + max_num = (max_num > mtk_crtc->conn_routes[i].route_len) ? max_num :
> + mtk_crtc->conn_routes[i].route_len;

if test is true, then do "max_num = max_num"
I'm not sure the compiler will optimize that.
Also, I think it more readable like that:

if (max_num < mtk_crtc->conn_routes[i].route_len) {
max_num = mtk_crtc->conn_routes[i].route_len;
}

> +
> + return max_num;
> +}
> +
> +static int mtk_drm_crtc_update_output(struct drm_crtc *crtc,
> + struct drm_atomic_state *state)
> +{
> + int crtc_index = drm_crtc_index(crtc);
> + struct drm_crtc_state *crtc_state = state->crtcs[crtc_index].new_state;
> + unsigned int encoder_mask = crtc_state->encoder_mask;
> + struct mtk_drm_private *priv = crtc->dev->dev_private;
> + struct device *dev;
> + struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
> + const struct mtk_drm_route *conn_routes;
> + unsigned int route_len = 0, route_index = 0;
> + unsigned int comp_id;
> + int i;

Can you put them in alphabetical order please ?

> +
> + if (!mtk_crtc->conn_route_nr)
> + return 0;
> +
> snip...
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> index 3e9046993d09..96790f8f7a94 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> @@ -7,6 +7,7 @@
> #define MTK_DRM_CRTC_H
>
> #include <drm/drm_crtc.h>
> +#include "mtk_drm_drv.h"

Alphabetical order please.

> #include "mtk_drm_ddp_comp.h"
> #include "mtk_drm_plane.h"
>
> @@ -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,


Regards,
Alexandre

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