linux-kernel - [PATCH v3, 07/15] drm/mediatek: enable OVL_LAYER_SMI_ID

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1610351031-21133-8-git-send-email-yongqiang.niu@mediatek.com>
Date:   Mon, 11 Jan 2021 15:43:43 +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>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>
Subject: [PATCH v3, 07/15] drm/mediatek: enable OVL_LAYER_SMI_ID_EN for multi-layer usecase

enable OVL_LAYER_SMI_ID_EN for multi-layer usecase

Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
---
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index b47c238..4934bee 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -23,6 +23,7 @@
 #define DISP_REG_OVL_RST			0x0014
 #define DISP_REG_OVL_ROI_SIZE			0x0020
 #define DISP_REG_OVL_DATAPATH_CON		0x0024
+#define OVL_LAYER_SMI_ID_EN				BIT(0)
 #define OVL_BGCLR_SEL_IN				BIT(2)
 #define DISP_REG_OVL_ROI_BGCLR			0x0028
 #define DISP_REG_OVL_SRC_CON			0x002c
@@ -61,6 +62,7 @@ struct mtk_disp_ovl_data {
 	unsigned int gmc_bits;
 	unsigned int layer_nr;
 	bool fmt_rgb565_is_0;
+	bool smi_id_en;
 };
 
 /**
@@ -116,7 +118,17 @@ static void mtk_ovl_disable_vblank(struct mtk_ddp_comp *comp)
 
 static void mtk_ovl_start(struct mtk_ddp_comp *comp)
 {
+	struct mtk_disp_ovl *ovl = comp_to_ovl(comp);
+
 	writel_relaxed(0x1, comp->regs + DISP_REG_OVL_EN);
+
+	if(ovl->data->smi_id_en) {
+		unsigned int reg;
+
+		reg = readl(comp->regs + DISP_REG_OVL_DATAPATH_CON);
+		reg = reg | OVL_LAYER_SMI_ID_EN;
+		writel_relaxed(reg, comp->regs + DISP_REG_OVL_DATAPATH_CON);
+	}
 }
 
 static void mtk_ovl_stop(struct mtk_ddp_comp *comp)
-- 
1.8.1.1.dirty