linux-kernel - [PATCH v2,2/5] media: mtk-vcodec: Support 4GB~8GB range iova space for venc

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Message-ID: <20210312075542.5503-3-irui.wang@mediatek.com>
Date:   Fri, 12 Mar 2021 15:55:39 +0800
From:   Irui Wang <irui.wang@...iatek.com>
To:     Alexandre Courbot <acourbot@...omium.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tomasz Figa <tfiga@...gle.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Maoguang Meng <maoguang.meng@...iatek.com>,
        Longfei Wang <longfei.wang@...iatek.com>,
        Yunfei Dong <yunfei.dong@...iatek.com>, <yong.wu@...iatek.com>
CC:     Irui Wang <irui.wang@...iatek.com>, <linux-media@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <linux-mediatek@...ts.infradead.org>
Subject: [PATCH v2,2/5] media: mtk-vcodec: Support 4GB~8GB range iova space for venc

Uses the dma_set_mask_and_coherent helper to set venc
DMA bit mask to support 4GB~8GB range iova space.

Signed-off-by: Irui Wang <irui.wang@...iatek.com>
---
 drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
index 7d7b8cfc2cc5..26b089e81213 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
@@ -361,6 +361,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 		goto err_event_workq;
 	}
 
+	if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL))
+		dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34));
+
 	ret = video_register_device(vfd_enc, VFL_TYPE_VIDEO, 1);
 	if (ret) {
 		mtk_v4l2_err("Failed to register video device");
-- 
2.18.0