[PATCH v10 13/22] drm/mediatek: add display merge start/stop API for cmdq support

[Nancy . Lin]

Add merge start/stop API for cmdq support. The ovl_adaptor merges
are configured with each drm plane update. Need to enable/disable
merge with cmdq making sure all the settings taken effect in the
same vblank.

Signed-off-by: Nancy.Lin <nancy....@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang...@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_disp_drv.h   |  2 ++
 drivers/gpu/drm/mediatek/mtk_disp_merge.c | 20 +++++++++++++++++---
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h 
b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index c2de53a5892e..224a710bb537 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -66,6 +66,8 @@ void mtk_merge_stop(struct device *dev);
 void mtk_merge_advance_config(struct device *dev, unsigned int l_w, unsigned 
int r_w,
                              unsigned int h, unsigned int vrefresh, unsigned 
int bpc,
                              struct cmdq_pkt *cmdq_pkt);
+void mtk_merge_start_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt);
+void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt);
 
 void mtk_ovl_bgclr_in_on(struct device *dev);
 void mtk_ovl_bgclr_in_off(struct device *dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c 
b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
index 40da0555416d..c0d9b43b2a66 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
@@ -67,17 +67,31 @@ struct mtk_disp_merge {
 };
 
 void mtk_merge_start(struct device *dev)
+{
+       mtk_merge_start_cmdq(dev, NULL);
+}
+
+void mtk_merge_stop(struct device *dev)
 {
        struct mtk_disp_merge *priv = dev_get_drvdata(dev);
 
-       writel(MERGE_EN, priv->regs + DISP_REG_MERGE_CTRL);
+       mtk_merge_stop_cmdq(dev, NULL);
 }
 
-void mtk_merge_stop(struct device *dev)
+void mtk_merge_start_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
+{
+       struct mtk_disp_merge *priv = dev_get_drvdata(dev);
+
+       mtk_ddp_write(cmdq_pkt, 1, &priv->cmdq_reg, priv->regs,
+                     DISP_REG_MERGE_CTRL);
+}
+
+void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
 {
        struct mtk_disp_merge *priv = dev_get_drvdata(dev);
 
-       writel(0x0, priv->regs + DISP_REG_MERGE_CTRL);
+       mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs,
+                     DISP_REG_MERGE_CTRL);
 }
 
 static void mtk_merge_fifo_setting(struct mtk_disp_merge *priv,
-- 
2.18.0