[PATCH v4 3/9] drm/mediatek: Add secure identify flag and funcution to mtk_drm_plane

From: Shawn Sung <shawn.sung@mediatek.com>
To: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: "Philipp Zabel" <p.zabel@pengutronix.de>,
	"David Airlie" <airlied@gmail.com>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"AngeloGioacchino Del Regno"
	<angelogioacchino.delregno@collabora.com>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Christian König" <christian.koenig@amd.com>,
	dri-devel@lists.freedesktop.org,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org,
	"Jason-JH.Lin" <jason-jh.lin@mediatek.com>,
	"Hsiao Chien Sung" <shawn.sung@mediatek.com>
Subject: [PATCH v4 3/9] drm/mediatek: Add secure identify flag and funcution to mtk_drm_plane
Date: Wed, 3 Apr 2024 15:07:26 +0800	[thread overview]
Message-ID: <20240403070732.22085-4-shawn.sung@mediatek.com> (raw)
In-Reply-To: <20240403070732.22085-1-shawn.sung@mediatek.com>

From: "Jason-JH.Lin" <jason-jh.lin@mediatek.com>

Add is_sec flag to identify current mtk_drm_plane is secure.
Add mtk_plane_is_sec_fb() to check current drm_framebuffer is secure.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_plane.c | 18 ++++++++++++++++++
 drivers/gpu/drm/mediatek/mtk_plane.h |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_plane.c b/drivers/gpu/drm/mediatek/mtk_plane.c
index 5bf757a3ef202..021148d4b5d4a 100644
--- a/drivers/gpu/drm/mediatek/mtk_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_plane.c
@@ -210,6 +210,7 @@ static void mtk_plane_update_new_state(struct drm_plane_state *new_state,
 	mtk_plane_state->pending.height = drm_rect_height(&new_state->dst);
 	mtk_plane_state->pending.rotation = new_state->rotation;
 	mtk_plane_state->pending.color_encoding = new_state->color_encoding;
+	mtk_plane_state->pending.is_secure = mtk_plane_fb_is_secure(fb);
 }
 
 static void mtk_plane_atomic_async_update(struct drm_plane *plane,
@@ -361,3 +362,20 @@ int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
 
 	return 0;
 }
+
+bool mtk_plane_fb_is_secure(struct drm_framebuffer *fb)
+{
+	struct drm_gem_object *gem = NULL;
+	struct mtk_gem_obj *mtk_gem = NULL;
+
+	if (!fb)
+		return false;
+
+	gem = fb->obj[0];
+	if (!gem)
+		return false;
+
+	mtk_gem = to_mtk_gem_obj(gem);
+
+	return mtk_gem->secure;
+}
diff --git a/drivers/gpu/drm/mediatek/mtk_plane.h b/drivers/gpu/drm/mediatek/mtk_plane.h
index 231bb7aac9473..a7779a91f0a20 100644
--- a/drivers/gpu/drm/mediatek/mtk_plane.h
+++ b/drivers/gpu/drm/mediatek/mtk_plane.h
@@ -33,6 +33,7 @@ struct mtk_plane_pending_state {
 	bool				async_dirty;
 	bool				async_config;
 	enum drm_color_encoding		color_encoding;
+	bool				is_secure;
 };
 
 struct mtk_plane_state {
@@ -46,6 +47,7 @@ to_mtk_plane_state(struct drm_plane_state *state)
 	return container_of(state, struct mtk_plane_state, base);
 }
 
+bool mtk_plane_fb_is_secure(struct drm_framebuffer *fb);
 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
 		   unsigned long possible_crtcs, enum drm_plane_type type,
 		   unsigned int supported_rotations, const u32 *formats,
-- 
2.18.0


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