linux-kernel - [PATCH v1 19/21] drm/mediatek: add aal bypass shadow register function

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Date:   Thu, 20 Aug 2020 14:04:16 +0800
From:   Yongqiang Niu <yongqiang.niu@...iatek.com>
To:     CK Hu <ck.hu@...iatek.com>, Philipp Zabel <p.zabel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>
Subject: [PATCH v1 19/21] drm/mediatek: add aal bypass shadow register function

add aal bypass shadow register function

Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index 315bd3a..b4a6df5 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -38,7 +38,8 @@
 #define AAL_RELAY_MODE					BIT(0)
 #define AAL_ENGINE_EN					BIT(1)
 #define DISP_AAL_SIZE				0x0030
-
+#define DISP_AAL_SHADOW_CTRL			0x00f0
+#define AAL_BYPASS_SHADOW				BIT(0)
 #define DISP_AAL_OUTPUT_SIZE			0x04d8
 
 #define DISP_CCORR_EN				0x0000
@@ -207,6 +208,13 @@ static void mtk_aal_stop(struct mtk_ddp_comp *comp)
 	writel_relaxed(0x0, comp->regs + DISP_AAL_EN);
 }
 
+static void mtk_aal_bypass_shadow(struct mtk_ddp_comp *comp)
+{
+	mtk_ddp_write_mask(NULL, AAL_BYPASS_SHADOW, comp,
+			   DISP_AAL_SHADOW_CTRL,
+			   AAL_BYPASS_SHADOW);
+}
+
 static void mtk_ccorr_config(struct mtk_ddp_comp *comp, unsigned int w,
 			     unsigned int h, unsigned int vrefresh,
 			     unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
@@ -365,6 +373,7 @@ static void mtk_postmask_stop(struct mtk_ddp_comp *comp)
 	.config = mtk_aal_config,
 	.start = mtk_aal_start,
 	.stop = mtk_aal_stop,
+	.bypass_shadow = mtk_aal_bypass_shadow,
 };
 
 static const struct mtk_ddp_comp_funcs ddp_ccorr = {
-- 
1.8.1.1.dirty