Commit 502932a0 authored by james qian wang (Arm Technology China)'s avatar james qian wang (Arm Technology China) Committed by Liviu Dudau

drm/komeda: Add the initial scaler support for CORE

This patch add the initial and necessary logic for CORE to support scaler:
- Complete the struct komeda_scaler and komeda_scaler_state for adding
  the scaler specific features and capablities.
- Implement komeda_scaler_validate to check the scaler with the data flow
  configurations.
- Enable scaling support for plane input path (layer input data flow).

v2: Fix a typo, and rename "needs_scaling" to "en_scaling"
Signed-off-by: default avatarJames Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: default avatarLiviu Dudau <liviu.dudau@arm.com>
parent 7fded557
......@@ -126,6 +126,20 @@ komeda_pipeline_get_component(struct komeda_pipeline *pipe, int id)
return c;
}
struct komeda_component *
komeda_pipeline_get_first_component(struct komeda_pipeline *pipe,
u32 comp_mask)
{
struct komeda_component *c = NULL;
int id;
id = find_first_bit((unsigned long *)&comp_mask, 32);
if (id < 32)
c = komeda_pipeline_get_component(pipe, id);
return c;
}
/** komeda_component_add - Add a component to &komeda_pipeline */
struct komeda_component *
komeda_component_add(struct komeda_pipeline *pipe,
......
......@@ -244,11 +244,17 @@ struct komeda_layer_state {
struct komeda_scaler {
struct komeda_component base;
/* scaler features and caps */
struct malidp_range hsize, vsize;
u32 max_upscaling;
u32 max_downscaling;
};
struct komeda_scaler_state {
struct komeda_component_state base;
u16 hsize_in, vsize_in;
u16 hsize_out, vsize_out;
u8 en_scaling : 1,
en_alpha : 1; /* enable alpha processing */
};
struct komeda_compiz {
......@@ -307,6 +313,7 @@ struct komeda_data_flow_cfg {
u32 rot;
int blending_zorder;
u8 pixel_blend_mode, layer_alpha;
u8 en_scaling : 1;
};
/** struct komeda_pipeline_funcs */
......@@ -407,6 +414,9 @@ void komeda_pipeline_destroy(struct komeda_dev *mdev,
int komeda_assemble_pipelines(struct komeda_dev *mdev);
struct komeda_component *
komeda_pipeline_get_component(struct komeda_pipeline *pipe, int id);
struct komeda_component *
komeda_pipeline_get_first_component(struct komeda_pipeline *pipe,
u32 comp_mask);
void komeda_pipeline_dump_register(struct komeda_pipeline *pipe,
struct seq_file *sf);
......@@ -423,6 +433,14 @@ komeda_component_add(struct komeda_pipeline *pipe,
void komeda_component_destroy(struct komeda_dev *mdev,
struct komeda_component *c);
static inline struct komeda_component *
komeda_component_pickup_output(struct komeda_component *c, u32 avail_comps)
{
u32 avail_inputs = c->supported_outputs & (avail_comps);
return komeda_pipeline_get_first_component(c->pipeline, avail_inputs);
}
struct komeda_plane_state;
struct komeda_crtc_state;
struct komeda_crtc;
......
......@@ -249,6 +249,26 @@ komeda_component_validate_private(struct komeda_component *c,
return err;
}
/* Get current available scaler from the component->supported_outputs */
static struct komeda_scaler *
komeda_component_get_avail_scaler(struct komeda_component *c,
struct drm_atomic_state *state)
{
struct komeda_pipeline_state *pipe_st;
u32 avail_scalers;
pipe_st = komeda_pipeline_get_state(c->pipeline, state);
if (!pipe_st)
return NULL;
avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^
KOMEDA_PIPELINE_SCALERS;
c = komeda_component_pickup_output(c, avail_scalers);
return to_scaler(c);
}
static int
komeda_layer_check_cfg(struct komeda_layer *layer,
struct komeda_plane_state *kplane_st,
......@@ -355,6 +375,98 @@ komeda_wb_layer_validate(struct komeda_layer *wb_layer,
return 0;
}
static bool scaling_ratio_valid(u32 size_in, u32 size_out,
u32 max_upscaling, u32 max_downscaling)
{
if (size_out > size_in * max_upscaling)
return false;
else if (size_in > size_out * max_downscaling)
return false;
return true;
}
static int
komeda_scaler_check_cfg(struct komeda_scaler *scaler,
struct komeda_data_flow_cfg *dflow)
{
u32 hsize_in, vsize_in, hsize_out, vsize_out;
hsize_in = dflow->in_w;
vsize_in = dflow->in_h;
hsize_out = dflow->out_w;
vsize_out = dflow->out_h;
if (!in_range(&scaler->hsize, hsize_in) ||
!in_range(&scaler->hsize, hsize_out)) {
DRM_DEBUG_ATOMIC("Invalid horizontal sizes");
return -EINVAL;
}
if (!in_range(&scaler->vsize, vsize_in) ||
!in_range(&scaler->vsize, vsize_out)) {
DRM_DEBUG_ATOMIC("Invalid vertical sizes");
return -EINVAL;
}
if (!scaling_ratio_valid(hsize_in, hsize_out, scaler->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,
scaler->max_downscaling)) {
DRM_DEBUG_ATOMIC("Invalid vertical scaling ratio");
return -EINVAL;
}
return 0;
}
static int
komeda_scaler_validate(void *user,
struct komeda_crtc_state *kcrtc_st,
struct komeda_data_flow_cfg *dflow)
{
struct drm_atomic_state *drm_st = kcrtc_st->base.state;
struct komeda_component_state *c_st;
struct komeda_scaler_state *st;
struct komeda_scaler *scaler;
int err = 0;
if (!dflow->en_scaling)
return 0;
scaler = komeda_component_get_avail_scaler(dflow->input.component,
drm_st);
if (!scaler) {
DRM_DEBUG_ATOMIC("No scaler available");
return -EINVAL;
}
err = komeda_scaler_check_cfg(scaler, dflow);
if (err)
return err;
c_st = komeda_component_get_state_and_set_user(&scaler->base,
drm_st, user, kcrtc_st->base.crtc);
if (IS_ERR(c_st))
return PTR_ERR(c_st);
st = to_scaler_st(c_st);
st->hsize_in = dflow->in_w;
st->vsize_in = dflow->in_h;
st->hsize_out = dflow->out_w;
st->vsize_out = dflow->out_h;
st->en_scaling = dflow->en_scaling;
/* Enable alpha processing if the next stage needs the pixel alpha */
st->en_alpha = dflow->pixel_blend_mode != DRM_MODE_BLEND_PIXEL_NONE;
komeda_component_add_input(&st->base, &dflow->input, 0);
komeda_component_set_output(&dflow->input, &scaler->base, 0);
return err;
}
void pipeline_composition_size(struct komeda_crtc_state *kcrtc_st,
u16 *hsize, u16 *vsize)
{
......@@ -520,6 +632,10 @@ int komeda_build_layer_data_flow(struct komeda_layer *layer,
if (err)
return err;
err = komeda_scaler_validate(plane, kcrtc_st, dflow);
if (err)
return err;
err = komeda_compiz_set_input(pipe->compiz, kcrtc_st, dflow);
return err;
......
......@@ -16,6 +16,7 @@ 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));
......@@ -36,6 +37,13 @@ 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);
return 0;
}
......
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