linux-kernel - Re: [PATCH v1, 06/14] media: mtk-vcodec: Add irq interface for core hardware

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Date:   Fri, 9 Jul 2021 15:59:52 +0800
From:   Tzung-Bi Shih <tzungbi@...gle.com>
To:     Yunfei Dong <Yunfei.Dong@...iatek.com>
Cc:     Alexandre Courbot <acourbot@...omium.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Tzung-Bi Shih <tzungbi@...omium.org>,
        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>,
        Fritz Koenig <frkoenig@...omium.org>,
        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,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v1, 06/14] media: mtk-vcodec: Add irq interface for core hardware

On Wed, Jul 7, 2021 at 2:22 PM Yunfei Dong <yunfei.dong@...iatek.com> wrote:
> +static int mtk_vcodec_get_hw_count(struct mtk_vcodec_dev *dev)
> +{
> +       if (dev->vdec_pdata->hw_arch == MTK_VDEC_PURE_SINGLE_CORE)
> +               return 1;
> +       else if (dev->vdec_pdata->hw_arch == MTK_VDEC_LAT_SINGLE_CORE)
> +               return 2;
> +       else
> +               return 0;
> +}
Use a switch .. case .. would be easier to read.

Would it be better to use some macro or enums for the magic numbers?

> @@ -113,8 +114,7 @@ static int mtk_vdec_comp_init_irq(struct mtk_vdec_comp_dev *dev)
>         }
>
>         ret = devm_request_irq(&pdev->dev, dev->dec_irq,
> -                               mtk_vdec_comp_irq_handler,
> -                               0, pdev->name, dev);
> +                               mtk_vdec_comp_irq_handler, 0, pdev->name, dev);
The change is irrelevant to this patch.

> @@ -154,8 +154,10 @@ static int mtk_vdec_comp_probe(struct platform_device *pdev)
>                 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34));
>
>         ret = mtk_vdec_comp_init_irq(dev);
> -       if (ret)
> +       if (ret) {
> +               dev_err(&pdev->dev, "Failed to register irq handler.\n");
>                 goto err;
> +       }
The change shouldn't be in this patch.  Instead, another patch that
adds the mtk_vdec_comp_init_irq() invocation.

> +int mtk_vcodec_wait_for_comp_done_ctx(struct mtk_vcodec_ctx  *ctx,
Remove the extra space before "*ctx".