linux-kernel - Re: [PATCH v3 19/31] clk: mediatek: Add mtk_clk_simple

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Message-ID: <42d78659a50a98845e9bce47abcfe4bc3dff2c8c.camel@mediatek.com>
Date:   Tue, 15 Feb 2022 14:37:56 +0800
From:   Chun-Jie Chen <chun-jie.chen@...iatek.com>
To:     Chen-Yu Tsai <wenst@...omium.org>, Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Miles Chen <miles.chen@...iatek.com>,
        <linux-clk@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 19/31] clk: mediatek: Add mtk_clk_simple_remove()

On Tue, 2022-02-08 at 20:40 +0800, Chen-Yu Tsai wrote:
> In commit c58cd0e40ffa ("clk: mediatek: Add mtk_clk_simple_probe() to
> simplify clock providers"), a generic probe function was added to
> simplify clk drivers that only needed to support clk gates. However
> due
> to the lack of unregister APIs, a corresponding remove function was
> not
> added.
> 
> Now that the unregister APIs have been implemented, add
> aforementioned
> remove function to make it complete.
> 
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> Reviewed-by: Miles Chen <miles.chen@...iatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>

Reviewed-by: Chun-Jie Chen <chun-jie.chen@...iatek.com>
> ---
>  drivers/clk/mediatek/clk-mtk.c | 15 +++++++++++++++
>  drivers/clk/mediatek/clk-mtk.h |  1 +
>  2 files changed, 16 insertions(+)
> 
> diff --git a/drivers/clk/mediatek/clk-mtk.c
> b/drivers/clk/mediatek/clk-mtk.c
> index 869e6ae55c82..f108786caeda 100644
> --- a/drivers/clk/mediatek/clk-mtk.c
> +++ b/drivers/clk/mediatek/clk-mtk.c
> @@ -374,6 +374,8 @@ int mtk_clk_simple_probe(struct platform_device
> *pdev)
>  	if (r)
>  		goto free_data;
>  
> +	platform_set_drvdata(pdev, clk_data);
> +
>  	return r;
>  
>  free_data:
> @@ -381,4 +383,17 @@ int mtk_clk_simple_probe(struct platform_device
> *pdev)
>  	return r;
>  }
>  
> +int mtk_clk_simple_remove(struct platform_device *pdev)
> +{
> +	const struct mtk_clk_desc *mcd =
> of_device_get_match_data(&pdev->dev);
> +	struct clk_onecell_data *clk_data = platform_get_drvdata(pdev);
> +	struct device_node *node = pdev->dev.of_node;
> +
> +	of_clk_del_provider(node);
> +	mtk_clk_unregister_gates(mcd->clks, mcd->num_clks, clk_data);
> +	mtk_free_clk_data(clk_data);
> +
> +	return 0;
> +}
> +
>  MODULE_LICENSE("GPL");
> diff --git a/drivers/clk/mediatek/clk-mtk.h
> b/drivers/clk/mediatek/clk-mtk.h
> index 3c3a934f53cd..4fa658f5d934 100644
> --- a/drivers/clk/mediatek/clk-mtk.h
> +++ b/drivers/clk/mediatek/clk-mtk.h
> @@ -202,5 +202,6 @@ struct mtk_clk_desc {
>  };
>  
>  int mtk_clk_simple_probe(struct platform_device *pdev);
> +int mtk_clk_simple_remove(struct platform_device *pdev);
>  
>  #endif /* __DRV_CLK_MTK_H */