linux-kernel - Re: [PATCH v16 9/9] usb: dwc3: qcom: Add multiport suspend/resume support for wrapper

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Message-ID: <135446e7-5667-4ead-b2ab-78350100660d@quicinc.com>
Date: Mon, 25 Mar 2024 18:45:53 +0530
From: Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>
To: Johan Hovold <johan@...nel.org>
CC: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring
	<robh+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Wesley Cheng
	<quic_wcheng@...cinc.com>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        "Greg
 Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Felipe Balbi
	<balbi@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_ppratap@...cinc.com>,
        <quic_jackp@...cinc.com>
Subject: Re: [PATCH v16 9/9] usb: dwc3: qcom: Add multiport suspend/resume
 support for wrapper



On 3/25/2024 6:22 PM, Johan Hovold wrote:
> On Thu, Mar 07, 2024 at 11:50:52AM +0530, Krishna Kurapati wrote:
>> Power event IRQ is used for wakeup in cases:
>> a) where the controller is super speed capable and missing an
>> ss_phy interrupt.
>> b) where the GIC is not capable of detecting DP/DM hs phy irq's.
>>
>> Power event IRQ stat register indicates whether high speed phy
>> entered and exited L2 successfully during suspend and resume.
>> Indicate the same for all ports of multiport.
>>
>> Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
> 
>> @@ -471,9 +480,12 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup)
>>   	if (ret)
>>   		dev_warn(qcom->dev, "failed to enable interconnect: %d\n", ret);
>>   
>> +	for (i = 0; i < qcom->num_ports; i++) {
>>   	/* Clear existing events from PHY related to L2 in/out */
> 
> This comment either needs to be moved above the for-loop or be indented
> one level in.

Ah yes, missed it.
Will move it out of the loop.

> 
>> -	dwc3_qcom_setbits(qcom->qscratch_base, PWR_EVNT_IRQ_STAT_REG,
>> -			  PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK);
>> +		dwc3_qcom_setbits(qcom->qscratch_base,
>> +				  pwr_evnt_irq_stat_reg[i],
>> +				  PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK);
>> +	}
>>   
>>   	qcom->is_suspended = false;
> 
> With the above fixed:
> 
> Reviewed-by: Johan Hovold <johan+linaro@...nel.org>

Thanks for the review.

Regards,
Krishna,