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drm/mediatek: Add helper to get component for a plane 

Instead of hard-coding which components have planes, add a helper
function to walk the components and map a plane index to a component
layer.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
This commit is contained in:
Sean Paul 2019-11-05 16:10:19 -05:00 committed by CK Hu
parent 31c5558dae
commit d6b53f6835
1 changed files with 33 additions and 21 deletions
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54
drivers/gpu/drm/mediatek/mtk_drm_crtc.c
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@ -207,6 +207,28 @@ static void mtk_crtc_ddp_clk_disable(struct mtk_drm_crtc *mtk_crtc)
clk_disable_unprepare(mtk_crtc->ddp_comp[i]->clk);
}
static
struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
struct drm_plane *plane,
unsigned int *local_layer)
{
struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
struct mtk_ddp_comp *comp;
int i, count = 0;
for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
comp = mtk_crtc->ddp_comp[i];
if (plane->index < (count + mtk_ddp_comp_layer_nr(comp))) {
*local_layer = plane->index - count;
return comp;
}
count += mtk_ddp_comp_layer_nr(comp);
}
WARN(1, "Failed to find component for plane %d\n", plane->index);
return NULL;
}
static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
{
struct drm_crtc *crtc = &mtk_crtc->base;
@ -283,19 +305,12 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
for (i = 0; i < mtk_crtc->layer_nr; i++) {
struct drm_plane *plane = &mtk_crtc->planes[i];
struct mtk_plane_state *plane_state;
struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
unsigned int comp_layer_nr = mtk_ddp_comp_layer_nr(comp);
struct mtk_ddp_comp *comp;
unsigned int local_layer;
plane_state = to_mtk_plane_state(plane->state);
if (i >= comp_layer_nr) {
comp = mtk_crtc->ddp_comp[1];
local_layer = i - comp_layer_nr;
} else
local_layer = i;
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state);
comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
mtk_ddp_comp_layer_config(comp, local_layer, plane_state);
}
return 0;
@ -343,7 +358,6 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
unsigned int i;
unsigned int comp_layer_nr = mtk_ddp_comp_layer_nr(comp);
unsigned int local_layer;
/*
@ -366,17 +380,15 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
plane_state = to_mtk_plane_state(plane->state);
if (plane_state->pending.config) {
if (i >= comp_layer_nr) {
comp = mtk_crtc->ddp_comp[1];
local_layer = i - comp_layer_nr;
} else
local_layer = i;
if (!plane_state->pending.config)
continue;
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state);
plane_state->pending.config = false;
}
comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
&local_layer);
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state);
plane_state->pending.config = false;
}
mtk_crtc->pending_planes = false;
}