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    Subject[RESEND PATCH v1 17/18] drm/mediatek: add ovl0/ovl0_2l usecase
    Date
    From: Yongqiang Niu <yongqiang.niu@mediatek.com>

    This patch add ovl0/ovl0_2l usecase

    Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
    ---
    drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 38 ++++++++++++++++++++++++++++++---
    1 file changed, 35 insertions(+), 3 deletions(-)

    diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
    index a5af4be..25cf063 100644
    --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
    +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
    @@ -283,6 +283,15 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)

    for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
    struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[i];
    + enum mtk_ddp_comp_id prev = DDP_COMPONENT_ID_MAX;
    +
    + if (i > 0) {
    + struct mtk_ddp_comp *comp_prev;
    +
    + comp_prev = mtk_crtc->ddp_comp[i - 1];
    + prev = comp_prev->id;
    + }
    + mtk_ddp_comp_connect(comp, prev);

    mtk_ddp_comp_config(comp, width, height, vrefresh, bpc);
    mtk_ddp_comp_start(comp);
    @@ -292,10 +301,19 @@ 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);
    + unsigned int local_layer = 0;

    plane_state = to_mtk_plane_state(plane->state);
    - mtk_ddp_comp_layer_config(mtk_crtc->ddp_comp[0], i,
    - 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);
    }

    return 0;
    @@ -340,6 +358,8 @@ 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 = 0;

    /*
    * TODO: instead of updating the registers here, we should prepare
    @@ -362,7 +382,15 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
    plane_state = to_mtk_plane_state(plane->state);

    if (plane_state->pending.config) {
    - mtk_ddp_comp_layer_config(comp, i, 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);
    plane_state->pending.config = false;
    }
    }
    @@ -604,6 +632,10 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
    }

    mtk_crtc->layer_nr = mtk_ddp_comp_layer_nr(mtk_crtc->ddp_comp[0]);
    + if (mtk_crtc->ddp_comp_nr > 1 &&
    + mtk_ddp_comp_get_type(mtk_crtc->ddp_comp[1]->id) == MTK_DISP_OVL)
    + mtk_crtc->layer_nr +=
    + mtk_ddp_comp_layer_nr(mtk_crtc->ddp_comp[1]);
    mtk_crtc->planes = devm_kcalloc(dev, mtk_crtc->layer_nr,
    sizeof(struct drm_plane),
    GFP_KERNEL);
    --
    1.8.1.1.dirty
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