linux-kernel - [PATCH v3 12/14] media: mediatek: vcodec: send share memory address to vcp

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Message-ID: <20260211054149.27249-13-yunfei.dong@mediatek.com>
Date: Wed, 11 Feb 2026 13:41:39 +0800
From: Yunfei Dong <yunfei.dong@...iatek.com>
To: Nícolas F . R . A . Prado
	<nfraprado@...labora.com>, Sebastian Fricke <sebastian.fricke@...labora.com>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>, Hans Verkuil
	<hverkuil-cisco@...all.nl>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Benjamin Gaignard
	<benjamin.gaignard@...labora.com>, Nathan Hebert <nhebert@...omium.org>,
	Daniel Almeida <daniel.almeida@...labora.com>
CC: Hsin-Yi Wang <hsinyi@...omium.org>, Fritz Koenig <frkoenig@...omium.org>,
	Daniel Vetter <daniel@...ll.ch>, Steve Cho <stevecho@...omium.org>, Yunfei
 Dong <yunfei.dong@...iatek.com>, <linux-media@...r.kernel.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>
Subject: [PATCH v3 12/14] media: mediatek: vcodec: send share memory address to vcp

The share memory is allocated in kernel for vcp architecture, it's different
with vpu which share memors is reserved in vpu micro processor. Need to send
share memory address to vcp.

Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
---
 drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h | 2 ++
 drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c  | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h b/drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h
index 47070be2a991..097561a1efdc 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h
@@ -67,11 +67,13 @@ struct vdec_vpu_ipi_ack {
  * @msg_id	: AP_IPIMSG_DEC_INIT
  * @codec_type	: codec fourcc
  * @ap_inst_addr	: AP video decoder instance address
+ * @shared_iova	: reserved share memory address
  */
 struct vdec_ap_ipi_init {
 	uint32_t msg_id;
 	u32 codec_type;
 	uint64_t ap_inst_addr;
+	u64 shared_iova;
 };
 
 /**
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c
index cdb673e6b477..3a10b32be094 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c
@@ -236,6 +236,8 @@ int vpu_dec_init(struct vdec_vpu_inst *vpu)
 	msg.msg_id = AP_IPIMSG_DEC_INIT;
 	msg.ap_inst_addr = (unsigned long)vpu;
 	msg.codec_type = vpu->codec_type;
+	if (mtk_vcodec_fw_get_type(vpu->ctx->dev->fw_handler) == VCP)
+		msg.shared_iova = vpu->ctx->dev->fw_handler->vcp->iova_addr;
 
 	mtk_vdec_debug(vpu->ctx, "vdec_inst=%p", vpu);
 
-- 
2.45.2