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Subject: media: mtk-vcodec: Support 34bits dma address for vdec
Author: Yunfei Dong <yunfei.d...@mediatek.com>
Date: Thu Jan 13 05:10:51 2022 +0100
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.d...@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno
<angelogioacchino.delre...@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mche...@kernel.org>
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 8 ++++++++
1 file changed, 8 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 1b67ed8f7f52..08d8e02559c6 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -323,6 +323,14 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
}
}
+ if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL)) {
+ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34));
+ if (ret) {
+ mtk_v4l2_err("Failed to set mask");
+ goto err_core_workq;
+ }
+ }
+
for (i = 0; i < MTK_VDEC_HW_MAX; i++)
mutex_init(&dev->dec_mutex[i]);
mutex_init(&dev->dev_mutex);
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