linux-kernel - Re: [PATCH v3 1/6] pinctrl: rockchip: add suspend/resume functions

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Date:	Tue, 21 Oct 2014 23:20:11 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	zyw@...k-chips.com
Cc:	Mike Turquette <mturquette@...aro.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	dianders@...omium.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	linux-rockchip@...ts.infradead.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	linux-arm-kernel@...ts.infradead.org,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v3 1/6] pinctrl: rockchip: add suspend/resume functions

Hi Chris,

Am Montag, 20. Oktober 2014, 20:42:48 schrieb zyw@...k-chips.com:
> From: Chris <zyw@...k-chips.com>

Please use your full name like "Chris Zhong"

> 
> support suspend/resume of pinctrl, it allows handling sleep mode
> for hogged pins in pinctrl
> 
> Signed-off-by: Chris <zyw@...k-chips.com>
> Signed-off-by: Chris Zhong <zyw@...k-chips.com>

also, please use only one Signed-off-by line for yourself :-)


> ---
> 
> Changes in v3: None
> Changes in v2: None
> 
>  drivers/pinctrl/pinctrl-rockchip.c |   29 +++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c
> b/drivers/pinctrl/pinctrl-rockchip.c index d0f3c18..d384d99 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -1795,6 +1795,31 @@ static struct rockchip_pin_ctrl
> *rockchip_pinctrl_get_soc_data( return ctrl;
>  }
> 
> +#ifdef CONFIG_PM
> +static int rockchip_pinctrl_suspend(struct platform_device *pdev,
> +				    pm_message_t state)
> +{
> +	struct rockchip_pinctrl *info;
> +
> +	info = platform_get_drvdata(pdev);
> +	if (!info)
> +		return -EINVAL;
> +
> +	return pinctrl_force_sleep(info->pctl_dev);
> +}
> +
> +static int rockchip_pinctrl_resume(struct platform_device *pdev)
> +{
> +	struct rockchip_pinctrl *info;
> +
> +	info = platform_get_drvdata(pdev);
> +	if (!info)
> +		return -EINVAL;
> +
> +	return pinctrl_force_default(info->pctl_dev);
> +}
> +#endif
> +
>  static int rockchip_pinctrl_probe(struct platform_device *pdev)
>  {
>  	struct rockchip_pinctrl *info;
> @@ -2010,6 +2035,10 @@ static struct platform_driver rockchip_pinctrl_driver
> = { .owner	= THIS_MODULE,
>  		.of_match_table = rockchip_pinctrl_dt_match,
>  	},
> +	#ifdef CONFIG_PM
> +	.suspend = rockchip_pinctrl_suspend,
> +	.resume = rockchip_pinctrl_resume,
> +	#endif

as Dmitry already pointed out, this is the legacy suspend interface and should 
not be used anymore.


>  };
> 
>  static int __init rockchip_pinctrl_drv_register(void)

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