From: Peter Chen <hzpeterchen@gmail.com>
To: Jisheng Zhang <jszhang@marvell.com>
Cc: Peter.Chen@nxp.com, gregkh@linuxfoundation.org,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] usb: chipidea: support generic phy in PM code path
Date: Mon, 22 Aug 2016 13:33:08 +0800 [thread overview]
Message-ID: <20160822053308.GA4362@shlinux2> (raw)
In-Reply-To: <20160819121013.760-1-jszhang@marvell.com>
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
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-usb" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Best Regards,
Peter Chen
next prev parent reply other threads:[~2016-08-22 5:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-19 12:10 [PATCH] usb: chipidea: support generic phy in PM code path Jisheng Zhang
2016-08-22 5:33 ` Peter Chen [this message]
2016-08-22 6:39 ` Jisheng Zhang
2016-08-22 7:29 ` Peter Chen
2016-08-22 8:14 ` Jisheng Zhang
2016-08-22 8:23 ` Kishon Vijay Abraham I
2016-08-22 8:29 ` Jisheng Zhang
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