From mboxrd@z Thu Jan  1 00:00:00 1970
From: hzpeterchen@gmail.com (Peter Chen)
Date: Mon, 22 Aug 2016 13:33:08 +0800
Subject: [PATCH] usb: chipidea: support generic phy in PM code path
In-Reply-To: <20160819121013.760-1-jszhang@marvell.com>
References: <20160819121013.760-1-jszhang@marvell.com>
Message-ID: <20160822053308.GA4362@shlinux2>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Fri, Aug 19, 2016 at 08:10:13PM +0800, Jisheng Zhang wrote:
> Support generic phy in PM code path: call phy_power_off/phy_power_on
> in ci_controller_suspend/ci_controller_resume.
> 
> Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
> ---
>  drivers/usb/chipidea/core.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index ae12595..ef9fb0b 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -1116,6 +1116,7 @@ static void ci_controller_suspend(struct ci_hdrc *ci)
>  		usleep_range(ci->platdata->phy_clkgate_delay_us,
>  			     ci->platdata->phy_clkgate_delay_us + 50);
>  	usb_phy_set_suspend(ci->usb_phy, 1);
> +	phy_power_off(ci->phy);

How could you support USB wakeup after PHY is powered off?

Peter

>  	ci->in_lpm = true;
>  	enable_irq(ci->irq);
>  }
> @@ -1132,9 +1133,10 @@ static int ci_controller_resume(struct device *dev)
>  	}
>  
>  	ci_hdrc_enter_lpm(ci, false);
> -	if (ci->usb_phy) {
> +	if (ci->usb_phy || ci->phy) {
>  		usb_phy_set_suspend(ci->usb_phy, 0);
>  		usb_phy_set_wakeup(ci->usb_phy, false);
> +		phy_power_on(ci->phy);
>  		hw_wait_phy_stable();
>  	}
>  
> -- 
> 2.9.3
> 
> --
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-- 

Best Regards,
Peter Chen