linux-kernel - [PATCH v4 5/9] drm/mediatek: Add get_sec_port interface to mtk_ddp

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Date: Wed, 3 Apr 2024 15:07:28 +0800
From: Shawn Sung <shawn.sung@...iatek.com>
To: Chun-Kuang Hu <chunkuang.hu@...nel.org>
CC: Philipp Zabel <p.zabel@...gutronix.de>, David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>, Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	"Maarten Lankhorst" <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
	<mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, Sumit Semwal
	<sumit.semwal@...aro.org>, Christian König
	<christian.koenig@....com>, <dri-devel@...ts.freedesktop.org>,
	<linux-mediatek@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-media@...r.kernel.org>,
	<linaro-mm-sig@...ts.linaro.org>, Jason-JH.Lin <jason-jh.lin@...iatek.com>,
	Hsiao Chien Sung <shawn.sung@...iatek.com>
Subject: [PATCH v4 5/9] drm/mediatek: Add get_sec_port interface to mtk_ddp_comp

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

Add get_sec_port interface to ddp_comp to get the secure port settings
from ovl and ovl_adaptor.
Then mediatek-drm will use secure cmdq driver to configure DRAM access
permission in secure world by their secure port settings.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@...iatek.com>
---
 drivers/gpu/drm/mediatek/mtk_ddp_comp.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_ddp_comp.h
index a00258a5cefda..a22725e5cdce9 100644
--- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.h
@@ -92,6 +92,7 @@ struct mtk_ddp_comp_funcs {
 	size_t (*crc_cnt)(struct device *dev);
 	u32 *(*crc_entry)(struct device *dev);
 	void (*crc_read)(struct device *dev);
+	u64 (*get_sec_port)(struct mtk_ddp_comp *comp, unsigned int idx);
 };
 
 struct mtk_ddp_comp {
@@ -237,6 +238,14 @@ static inline unsigned int mtk_ddp_gamma_get_lut_size(struct mtk_ddp_comp *comp)
 	return 0;
 }
 
+static inline u64 mtk_ddp_comp_layer_get_sec_port(struct mtk_ddp_comp *comp,
+						  unsigned int idx)
+{
+	if (comp->funcs && comp->funcs->get_sec_port)
+		return comp->funcs->get_sec_port(comp, idx);
+	return 0;
+}
+
 static inline void mtk_ddp_gamma_set(struct mtk_ddp_comp *comp,
 				     struct drm_crtc_state *state)
 {
-- 
2.18.0