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SubjectRe: [PATCH 2/2] drm/komeda: Computing layer_split and image_enhancer internally
On Fri, Jul 05, 2019 at 11:44:45AM +0000, james qian wang (Arm Technology China) wrote:
> For layer_split:
> Enable it if the scaling exceed the accept range of scaler.
>
> For image_enhancer:
> Enable it if the scaling is a 2x+ scaling

Imo should be two patches. Aside from that (and with 0 knowledge about the
hw, just looking at this from a kms/atomic uapi pov):

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

>
> Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
> ---
> .../gpu/drm/arm/display/komeda/komeda_pipeline.h | 3 ++-
> .../arm/display/komeda/komeda_pipeline_state.c | 15 ++++++++++++++-
> drivers/gpu/drm/arm/display/komeda/komeda_plane.c | 8 +-------
> .../drm/arm/display/komeda/komeda_wb_connector.c | 10 +---------
> 4 files changed, 18 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
> index fc1b8613385e..a90bcbb3cb23 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
> @@ -537,7 +537,8 @@ void komeda_pipeline_disable(struct komeda_pipeline *pipe,
> void komeda_pipeline_update(struct komeda_pipeline *pipe,
> struct drm_atomic_state *old_state);
>
> -void komeda_complete_data_flow_cfg(struct komeda_data_flow_cfg *dflow,
> +void komeda_complete_data_flow_cfg(struct komeda_layer *layer,
> + struct komeda_data_flow_cfg *dflow,
> struct drm_framebuffer *fb);
>
> #endif /* _KOMEDA_PIPELINE_H_*/
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> index 2b415ef2b7d3..709870bdaa4f 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> @@ -784,9 +784,11 @@ komeda_timing_ctrlr_validate(struct komeda_timing_ctrlr *ctrlr,
> return 0;
> }
>
> -void komeda_complete_data_flow_cfg(struct komeda_data_flow_cfg *dflow,
> +void komeda_complete_data_flow_cfg(struct komeda_layer *layer,
> + struct komeda_data_flow_cfg *dflow,
> struct drm_framebuffer *fb)
> {
> + struct komeda_scaler *scaler = layer->base.pipeline->scalers[0];
> u32 w = dflow->in_w;
> u32 h = dflow->in_h;
>
> @@ -803,6 +805,17 @@ void komeda_complete_data_flow_cfg(struct komeda_data_flow_cfg *dflow,
>
> dflow->en_scaling = (w != dflow->out_w) || (h != dflow->out_h);
> dflow->is_yuv = fb->format->is_yuv;
> +
> + /* try to enable image enhancer if it is a 2x+ upscaling */
> + dflow->en_img_enhancement = dflow->out_w >= 2 * w ||
> + dflow->out_h >= 2 * h;
> +
> + /* try to enable split if scaling exceed the scaler's acceptable
> + * input/output range.
> + */
> + if (dflow->en_scaling && scaler)
> + dflow->en_split = !in_range(&scaler->hsize, dflow->in_w) ||
> + !in_range(&scaler->hsize, dflow->out_w);
> }
>
> static bool merger_is_available(struct komeda_pipeline *pipe,
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> index 5bb8553cc117..c095af154216 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> @@ -18,7 +18,6 @@ komeda_plane_init_data_flow(struct drm_plane_state *st,
> struct komeda_data_flow_cfg *dflow)
> {
> struct komeda_plane *kplane = to_kplane(st->plane);
> - struct komeda_plane_state *kplane_st = to_kplane_st(st);
> struct drm_framebuffer *fb = st->fb;
> const struct komeda_format_caps *caps = to_kfb(fb)->format_caps;
> struct komeda_pipeline *pipe = kplane->layer->base.pipeline;
> @@ -57,10 +56,7 @@ komeda_plane_init_data_flow(struct drm_plane_state *st,
> return -EINVAL;
> }
>
> - dflow->en_img_enhancement = !!kplane_st->img_enhancement;
> - dflow->en_split = !!kplane_st->layer_split;
> -
> - komeda_complete_data_flow_cfg(dflow, fb);
> + komeda_complete_data_flow_cfg(kplane->layer, dflow, fb);
>
> return 0;
> }
> @@ -175,8 +171,6 @@ komeda_plane_atomic_duplicate_state(struct drm_plane *plane)
>
> old = to_kplane_st(plane->state);
>
> - new->img_enhancement = old->img_enhancement;
> -
> return &new->base;
> }
>
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
> index bb8a61f6e9a4..617e1f7b8472 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
> @@ -13,7 +13,6 @@ komeda_wb_init_data_flow(struct komeda_layer *wb_layer,
> struct komeda_crtc_state *kcrtc_st,
> struct komeda_data_flow_cfg *dflow)
> {
> - struct komeda_scaler *scaler = wb_layer->base.pipeline->scalers[0];
> struct drm_framebuffer *fb = conn_st->writeback_job->fb;
>
> memset(dflow, 0, sizeof(*dflow));
> @@ -28,14 +27,7 @@ komeda_wb_init_data_flow(struct komeda_layer *wb_layer,
> dflow->pixel_blend_mode = DRM_MODE_BLEND_PIXEL_NONE;
> dflow->rot = DRM_MODE_ROTATE_0;
>
> - komeda_complete_data_flow_cfg(dflow, fb);
> -
> - /* if scaling exceed the acceptable scaler input/output range, try to
> - * enable split.
> - */
> - if (dflow->en_scaling && scaler)
> - dflow->en_split = !in_range(&scaler->hsize, dflow->in_w) ||
> - !in_range(&scaler->hsize, dflow->out_w);
> + komeda_complete_data_flow_cfg(wb_layer, dflow, fb);
>
> return 0;
> }
> --
> 2.20.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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