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drm/komeda: Add writeback scaling support

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1. Add scaler to writeback pipeline to enable the writeback scaling support
2. Display HW can not do upscaling for writeback, check it when validate.

v2: Rebase

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
james qian wang (Arm Technology China) 2019-05-23 12:10:15 +01:00 committed by Liviu Dudau
parent 6d30cbfbcd
commit d92b66b875
4 changed files with 34 additions and 14 deletions
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2
drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
View File

@ -470,4 +470,6 @@ 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);
#endif /* _KOMEDA_PIPELINE_H_*/

36
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
View File

@ -390,6 +390,7 @@ komeda_scaler_check_cfg(struct komeda_scaler *scaler,
struct komeda_data_flow_cfg *dflow)
{
u32 hsize_in, vsize_in, hsize_out, vsize_out;
u32 max_upscaling;
hsize_in = dflow->in_w;
vsize_in = dflow->in_h;
@ -408,13 +409,21 @@ komeda_scaler_check_cfg(struct komeda_scaler *scaler,
return -EINVAL;
}
if (!scaling_ratio_valid(hsize_in, hsize_out, scaler->max_upscaling,
/* If input comes from compiz that means the scaling is for writeback
* and scaler can not do upscaling for writeback
*/
if (has_bit(dflow->input.component->id, KOMEDA_PIPELINE_COMPIZS))
max_upscaling = 1;
else
max_upscaling = scaler->max_upscaling;
if (!scaling_ratio_valid(hsize_in, hsize_out, max_upscaling,
scaler->max_downscaling)) {
DRM_DEBUG_ATOMIC("Invalid horizontal scaling ratio");
return -EINVAL;
}
if (!scaling_ratio_valid(vsize_in, vsize_out, scaler->max_upscaling,
if (!scaling_ratio_valid(vsize_in, vsize_out, max_upscaling,
scaler->max_downscaling)) {
DRM_DEBUG_ATOMIC("Invalid vertical scaling ratio");
return -EINVAL;
@ -614,6 +623,17 @@ komeda_timing_ctrlr_validate(struct komeda_timing_ctrlr *ctrlr,
return 0;
}
void komeda_complete_data_flow_cfg(struct komeda_data_flow_cfg *dflow)
{
u32 w = dflow->in_w;
u32 h = dflow->in_h;
if (drm_rotation_90_or_270(dflow->rot))
swap(w, h);
dflow->en_scaling = (w != dflow->out_w) || (h != dflow->out_h);
}
int komeda_build_layer_data_flow(struct komeda_layer *layer,
struct komeda_plane_state *kplane_st,
struct komeda_crtc_state *kcrtc_st,
@ -641,16 +661,18 @@ int komeda_build_layer_data_flow(struct komeda_layer *layer,
return err;
}
/* writeback data path: compiz -> scaler -> wb_layer -> memory */
int komeda_build_wb_data_flow(struct komeda_layer *wb_layer,
struct drm_connector_state *conn_st,
struct komeda_crtc_state *kcrtc_st,
struct komeda_data_flow_cfg *dflow)
{
if ((dflow->in_w != dflow->out_w) ||
(dflow->in_h != dflow->out_h)) {
DRM_DEBUG_ATOMIC("current do not support scaling writeback.\n");
return -EINVAL;
}
struct drm_connector *conn = conn_st->connector;
int err;
err = komeda_scaler_validate(conn, kcrtc_st, dflow);
if (err)
return err;
return komeda_wb_layer_validate(wb_layer, conn_st, dflow);
}

8
drivers/gpu/drm/arm/display/komeda/komeda_plane.c
View File

@ -16,7 +16,6 @@ komeda_plane_init_data_flow(struct drm_plane_state *st,
struct komeda_data_flow_cfg *dflow)
{
struct drm_framebuffer *fb = st->fb;
u32 w, h;
memset(dflow, 0, sizeof(*dflow));
@ -37,12 +36,7 @@ komeda_plane_init_data_flow(struct drm_plane_state *st,
dflow->in_w = st->src_w >> 16;
dflow->in_h = st->src_h >> 16;
w = dflow->in_w;
h = dflow->in_h;
if (drm_rotation_90_or_270(dflow->rot))
swap(w, h);
dflow->en_scaling = (w != dflow->out_w) || (h != dflow->out_h);
komeda_complete_data_flow_cfg(dflow);
return 0;
}

2
drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
View File

@ -31,6 +31,8 @@ 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);
return 0;
}