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.w...@arm.com>
---
.../drm/arm/display/komeda/komeda_pipeline.h | 2 ++
.../display/komeda/komeda_pipeline_state.c | 36 +++++++++++++++----
.../gpu/drm/arm/display/komeda/komeda_plane.c | 8 +----
.../arm/display/komeda/komeda_wb_connector.c | 2 ++
4 files changed, 34 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index 400af217ed86..9ffe11c9f386 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -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_*/
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 a5300ef92eb7..9f07ef65008f 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
@@ -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);
}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
index cd3a7172a756..97d8adb6cd2b 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
@@ -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;
}
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 0c1a4220c280..eed521218ef3 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
@@ -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;
}
--
2.17.1
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