diff mbox series

[RESEND,v1,13/18] drm/mediatek: add ddp write register common api

Message ID 1552565120-24329-14-git-send-email-yongqiang.niu@mediatek.com (mailing list archive)
State New, archived
Headers show
Series add drm support for MT8183 | expand

Commit Message

Yongqiang Niu March 14, 2019, 12:05 p.m. UTC 
From: Yongqiang Niu <yongqiang.niu@mediatek.com>

This patch add ddp write register common api

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 24 ++++++++++++++++++++++++
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h |  9 +++++++++
 2 files changed, 33 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index a97e27b..1c0f9cc 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -84,6 +84,30 @@ 
 #define DITHER_ADD_LSHIFT_G(x)			(((x) & 0x7) << 4)
 #define DITHER_ADD_RSHIFT_G(x)			(((x) & 0x7) << 0)
 
+void mtk_ddp_write(unsigned int value, struct mtk_ddp_comp *comp,
+		   unsigned int offset)
+{
+	writel(value, comp->regs + offset);
+}
+
+void mtk_ddp_write_relaxed(unsigned int value,
+			   struct mtk_ddp_comp *comp,
+			   unsigned int offset)
+{
+	writel_relaxed(value, comp->regs + offset);
+}
+
+void mtk_ddp_write_mask(unsigned int value,
+			struct mtk_ddp_comp *comp,
+			unsigned int offset,
+			unsigned int mask)
+{
+	unsigned int tmp = readl(comp->regs + offset);
+
+	tmp = (tmp & ~mask) | (value & mask);
+	writel(tmp, comp->regs + offset);
+}
+
 void mtk_dither_set(struct mtk_ddp_comp *comp, unsigned int bpc,
 		    unsigned int CFG)
 {
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index f2ab0b3..b908172 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -189,5 +189,14 @@  int mtk_ddp_comp_init(struct device *dev, struct device_node *comp_node,
 void mtk_ddp_comp_unregister(struct drm_device *drm, struct mtk_ddp_comp *comp);
 void mtk_dither_set(struct mtk_ddp_comp *comp, unsigned int bpc,
 		    unsigned int CFG);
+void mtk_ddp_write(unsigned int value, struct mtk_ddp_comp *comp,
+		   unsigned int offset);
+void mtk_ddp_write_relaxed(unsigned int value,
+			   struct mtk_ddp_comp *comp,
+			   unsigned int offset);
+void mtk_ddp_write_mask(unsigned int value,
+			struct mtk_ddp_comp *comp,
+			unsigned int offset,
+			unsigned int mask);
 
 #endif /* MTK_DRM_DDP_COMP_H */