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    Subject[PATCH v17, 14/19] media: mtk-vcodec: Support 34bits dma address for vdec
    Date
    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>
    Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
    ---
    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 10215ccc85f7..1c2b96b4930b 100644
    --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
    +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
    @@ -322,6 +322,14 @@ 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);
    --
    2.25.1
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