linux-kernel - Re: [PATCH 1/2] pinctrl: mediatek: Add mtk_eint_pm

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Date:   Thu, 2 May 2019 21:48:08 +0800
From:   Yingjoe Chen <yingjoe.chen@...iatek.com>
To:     Nicolas Boichat <drinkcat@...omium.org>
CC:     <linux-mediatek@...ts.infradead.org>,
        Chuanjia Liu <Chuanjia.Liu@...iatek.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sean Wang <sean.wang@...nel.org>,
        <linux-kernel@...r.kernel.org>, <evgreen@...omium.org>,
        <swboyd@...omium.org>, <linux-gpio@...r.kernel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/2] pinctrl: mediatek: Add mtk_eint_pm_ops to common-v2

On Mon, 2019-04-29 at 11:25 +0800, Nicolas Boichat wrote:
> pinctrl variants that include pinctrl-mtk-common-v2.h (and not
> pinctrl-mtk-common.h) also need to use mtk_eint_pm_ops to setup
> wake mask properly, so copy over the pm_ops to v2.
> 
> It is not easy to merge the 2 copies (or move
> mtk_eint_suspend/resume to mtk-eint.c), as we need to
> dereference pctrl->eint, and struct mtk_pinctrl *pctl has a
> different structure definition for v1 and v2.
> 
> Signed-off-by: Nicolas Boichat <drinkcat@...omium.org>
> Reviewed-by: Chuanjia Liu <Chuanjia.Liu@...iatek.com>
> ---
>  .../pinctrl/mediatek/pinctrl-mtk-common-v2.c  | 19 +++++++++++++++++++
>  .../pinctrl/mediatek/pinctrl-mtk-common-v2.h  |  1 +
>  2 files changed, 20 insertions(+)
> 
> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> index 20e1c890e73b30c..7e19b5a4748eafe 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> @@ -723,3 +723,22 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
>  
>  	return 0;
>  }
> +
> +static int mtk_eint_suspend(struct device *device)
> +{
> +	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> +
> +	return mtk_eint_do_suspend(pctl->eint);
> +}
> +
> +static int mtk_eint_resume(struct device *device)
> +{
> +	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> +
> +	return mtk_eint_do_resume(pctl->eint);
> +}
> +
> +const struct dev_pm_ops mtk_eint_pm_ops = {
> +	.suspend_noirq = mtk_eint_suspend,
> +	.resume_noirq = mtk_eint_resume,
> +};

This is identical to the one in pinctrl-mtk-common.c and will have name
clash if both pinctrl-mtk-common.c and pinctrl-mtk-common-v2.c are
built.

It would be better if we try to merge both version into mtk-eint.c, this
way we could also remove some global functions.

Joe.C