Re: [PATCH v5, 22/32] drm/mediatek: add ovl0/ovl_2l0 usecase

Hi, Yongqiang:

On Thu, 2019-08-29 at 22:50 +0800, yongqiang.niu@mediatek.com wrote:

From: Yongqiang Niu yongqiang.niu@mediatek.com

This patch add ovl0/ovl_2l0 usecase in ovl->ovl_2l0 direct link usecase:

1. the crtc support layer number will 4+2
2. ovl_2l0 background color input select ovl0 when crtc init

and disable it when crtc finish 3. config ovl_2l0 layer, if crtc config layer number is bigger than ovl0 support layers(max is 4)

Applied to mediatek-drm-next-5.5 [1] with some modification by my comment, thanks.

[1] https://github.com/ckhu-mediatek/linux.git-tags/commits/mediatek-drm-next-5....

Regards, CK

Signed-off-by: Yongqiang Niu yongqiang.niu@mediatek.com

drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 38 +++++++++++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index c63ff2b..b55970a 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -270,6 +270,15 @@ 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;
  

• if (i > 0)
  

• 	prev = mtk_crtc->ddp_comp[i - 1]->id;
  

• else
  

• 	prev = DDP_COMPONENT_ID_MAX;
  

• if (prev == DDP_COMPONENT_OVL0)
  

• 	mtk_ddp_comp_bgclr_in_on(comp);
  
  

  mtk_ddp_comp_config(comp, width, height, vrefresh, bpc); mtk_ddp_comp_start(comp);

@@ -279,9 +288,18 @@ 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;
  
  

  plane_state = to_mtk_plane_state(plane->state);

• mtk_ddp_comp_layer_config(mtk_crtc->ddp_comp[0], i,
  

• 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);
  

  }

@@ -307,6 +325,7 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc) mtk_crtc->ddp_comp[i]->id); mtk_disp_mutex_disable(mtk_crtc->mutex); for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {

• mtk_ddp_comp_bgclr_in_off(mtk_crtc->ddp_comp[i]);
  

  mtk_ddp_remove_comp_from_path(mtk_crtc->config_regs, mtk_crtc->mmsys_reg_data, mtk_crtc->ddp_comp[i]->id,

@@ -327,6 +346,8 @@ 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;

  /*

  • TODO: instead of updating the registers here, we should prepare

@@ -349,7 +370,14 @@ 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;
  }
  

  }

@@ -572,6 +600,12 @@ 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) {

• struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[1];
  

• if (comp->funcs->bgclr_in_on)
  

• 	mtk_crtc->layer_nr += mtk_ddp_comp_layer_nr(comp);
  

• } mtk_crtc->planes = devm_kcalloc(dev, mtk_crtc->layer_nr, sizeof(struct drm_plane), GFP_KERNEL);