linux-kernel - Re: [PATCH v11, 04/19] media: mtk-vcodec: export decoder pm functions

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Date:   Tue, 30 Nov 2021 14:34:07 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     Yunfei Dong <yunfei.dong@...iatek.com>,
        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>
Cc:     Hsin-Yi Wang <hsinyi@...omium.org>,
        Fritz Koenig <frkoenig@...omium.org>,
        Dafna Hirschfeld <dafna.hirschfeld@...labora.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.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 v11, 04/19] media: mtk-vcodec: export decoder pm functions


Le 29/11/2021 à 04:41, Yunfei Dong a écrit :
> Register each hardware as platform device, need to call pm functions
> to open/close power and clock from module mtk-vcodec-dec, export these
> functions.

The commit message confuse me, maybe something like:
"When mtk vcodec decoder is build as a module we need to export
mtk-vcodec-dec pm functions to make them visible by the other components"

With that:
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>

>
> Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
> ---
>   drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> index 20bd157a855c..221cf60e9fbf 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> @@ -77,12 +77,14 @@ int mtk_vcodec_init_dec_pm(struct platform_device *pdev,
>   	put_device(pm->larbvdec);
>   	return ret;
>   }
> +EXPORT_SYMBOL_GPL(mtk_vcodec_init_dec_pm);
>   
>   void mtk_vcodec_release_dec_pm(struct mtk_vcodec_pm *pm)
>   {
>   	pm_runtime_disable(pm->dev);
>   	put_device(pm->larbvdec);
>   }
> +EXPORT_SYMBOL_GPL(mtk_vcodec_release_dec_pm);
>   
>   int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
>   {
> @@ -94,6 +96,7 @@ int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
>   
>   	return ret;
>   }
> +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_on);
>   
>   void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
>   {
> @@ -103,6 +106,7 @@ void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
>   	if (ret)
>   		mtk_v4l2_err("pm_runtime_put_sync fail %d", ret);
>   }
> +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_off);
>   
>   void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
>   {
> @@ -129,6 +133,7 @@ void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
>   	for (i -= 1; i >= 0; i--)
>   		clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
>   }
> +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_on);
>   
>   void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
>   {
> @@ -139,3 +144,4 @@ void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
>   	for (i = dec_clk->clk_num - 1; i >= 0; i--)
>   		clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
>   }
> +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_off);