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From:   Yunfei Dong <yunfei.dong@mediatek.com>
To:     Yunfei Dong <yunfei.dong@mediatek.com>,
        Alexandre Courbot <acourbot@chromium.org>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        Tzung-Bi Shih <tzungbi@chromium.org>,
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        Andrew-CT Chen <andrew-ct.chen@mediatek.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Tomasz Figa <tfiga@google.com>
CC:     Hsin-Yi Wang <hsinyi@chromium.org>,
        Fritz Koenig <frkoenig@chromium.org>,
        Irui Wang <irui.wang@mediatek.com>,
        <linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <srv_heupstream@mediatek.com>,
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Subject: [PATCH v1, 11/14] media: mtk-vcodec: Support 34bits dma address for vdec
Date:   Wed, 7 Jul 2021 14:21:54 +0800
Message-ID: <20210707062157.21176-12-yunfei.dong@mediatek.com>
In-Reply-To: <20210707062157.21176-1-yunfei.dong@mediatek.com>
References: <20210707062157.21176-1-yunfei.dong@mediatek.com>
MIME-Version: 1.0
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Use the dma_set_mask_and_coherent helper to set vdec
DMA bit mask to support 34bits iova space(16GB) that
the mt8192 iommu HW support.

Whole the iova range separate to 0~4G/4G~8G/8G~12G/12G~16G,
regarding which iova range VDEC actually locate, it
depends on the dma-ranges property of vdec dtsi node.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index 1bcb070ef947..c29154c30dcc 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -432,6 +432,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 		dev->num_core = 0;
 	}
 
+	if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL))
+		dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34));
+
 	for (i = 0; i < MTK_VDEC_HW_MAX; i++)
 		mutex_init(&dev->dec_mutex[i]);
 	mutex_init(&dev->dev_mutex);
-- 
2.18.0