linux-kernel - [PATCH v6 2/7] drm/mediatek/uapi: Add DRM_MTK_GEM_CREATE

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Message-ID: <20240525232928.5524-3-jason-jh.lin@mediatek.com>
Date: Sun, 26 May 2024 07:29:23 +0800
From: Jason-JH.Lin <jason-jh.lin@...iatek.com>
To: Chun-Kuang Hu <chunkuang.hu@...nel.org>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Maxime Ripard <mripard@...nel.org>
CC: David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	Matthias Brugger <matthias.bgg@...il.com>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>, <dri-devel@...ts.freedesktop.org>,
	<linux-media@...r.kernel.org>, <linaro-mm-sig@...ts.linaro.org>, "Jason-ch
 Chen" <jason-ch.chen@...iatek.com>, "Jason-JH . Lin"
	<jason-jh.lin@...iatek.com>, Singo Chang <singo.chang@...iatek.com>, "Nancy
 Lin" <nancy.lin@...iatek.com>, Shawn Sung <shawn.sung@...iatek.com>,
	<Project_Global_Chrome_Upstream_Group@...iatek.com>, Jeffrey Kardatzke
	<jkardatzke@...gle.com>
Subject: [PATCH v6 2/7] drm/mediatek/uapi: Add DRM_MTK_GEM_CREATE_RESTRICTED flag

Add DRM_MTK_GEM_CREATE_RESTRICTED flag for the user space to tell the
kernel space this dma buffer is restricted.
The user space can store this flag into the private data of the dma
buffer after allocating.

A restricted buffer is used to store the secure video content to support
secure video path feature.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@...iatek.com>
---
 include/uapi/drm/mediatek_drm.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/drm/mediatek_drm.h b/include/uapi/drm/mediatek_drm.h
index 821f7a732365..dee581718d70 100644
--- a/include/uapi/drm/mediatek_drm.h
+++ b/include/uapi/drm/mediatek_drm.h
@@ -39,6 +39,7 @@ struct drm_mtk_gem_create {
 };
 
 #define DRM_MTK_GEM_CREATE		0x00
+#define DRM_MTK_GEM_CREATE_RESTRICTED	0x01
 
 #define DRM_IOCTL_MTK_GEM_CREATE	DRM_IOWR(DRM_COMMAND_BASE + \
 		DRM_MTK_GEM_CREATE, struct drm_mtk_gem_create)
-- 
2.18.0