linux-kernel - Re: [PATCH v5 3/4] usb: dwc3: qcom: Configure wakeup interrupts and set genpd active wakeup flag

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Message-ID: <YFqMivRlDllNuqu/@google.com>
Date:   Tue, 23 Mar 2021 17:49:14 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Sandeep Maheswaram <sanm@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Felipe Balbi <balbi@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Doug Anderson <dianders@...omium.org>,
        linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Manu Gautam <mgautam@...eaurora.org>
Subject: Re: [PATCH v5 3/4] usb: dwc3: qcom: Configure wakeup interrupts and
 set genpd active wakeup flag

On Tue, Mar 23, 2021 at 01:11:18PM +0100, Greg Kroah-Hartman wrote:
> On Mon, Mar 22, 2021 at 11:01:19PM +0530, Sandeep Maheswaram wrote:
> > Configure interrupts based on hs_phy_mode to avoid triggering of
> > interrupts during system suspend and suspends successfully.
> > Set genpd active wakeup flag for usb gdsc if wakeup capable devices
> > are connected so that wake up happens without reenumeration.
> > Add helper functions to enable,disable wake irqs.
> 
> That feels like a lot of different things all in one patch.

Sandeep: one thing you could do to reduce the churn is to add
dwc3_qcom_enable/disable_wakeup_irq() in a separate patch, without
any functional changes. Then this patch would only add the different
branches based on the PHY mode.

The handling of the power domain could probably also be done in a
separate patch, if I recall correctly it is only an optimization.