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Message-ID: <525c3f83-86b4-bd42-4088-25e81b53a6bf@quicinc.com>
Date:   Wed, 21 Jun 2023 15:38:45 +0530
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Subject: Re: [PATCH v9 06/10] usb: dwc3: qcom: Add support to read IRQ's
 related to multiport
To:     Konrad Dybcio <konrad.dybcio@linaro.org>,
        Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Andy Gross <agross@kernel.org>,
        "Bjorn Andersson" <andersson@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
        Felipe Balbi <balbi@kernel.org>,
        Wesley Cheng <quic_wcheng@quicinc.com>,
        Johan Hovold <johan@kernel.org>
CC:     <linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <quic_pkondeti@quicinc.com>, <quic_ppratap@quicinc.com>,
        <quic_jackp@quicinc.com>, <quic_harshq@quicinc.com>,
        <ahalaney@redhat.com>, <quic_shazhuss@quicinc.com>
References: <20230621043628.21485-1-quic_kriskura@quicinc.com>
 <20230621043628.21485-7-quic_kriskura@quicinc.com>
 <03371bd0-12a5-3109-ebf7-33feeef31bac@linaro.org>
Content-Language: en-US
From:   Krishna Kurapati PSSNV <quic_kriskura@quicinc.com>
In-Reply-To: <03371bd0-12a5-3109-ebf7-33feeef31bac@linaro.org>
Content-Type: text/plain; charset="UTF-8"; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk


On 6/21/2023 3:35 PM, Konrad Dybcio wrote:
> On 21.06.2023 06:36, Krishna Kurapati wrote:
>> Add support to read Multiport IRQ's related to quad port controller
>> of SA8295 Device.
>>
>> Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
>> ---
>>   drivers/usb/dwc3/dwc3-qcom.c | 108 +++++++++++++++++++++++++++++------
>>   1 file changed, 91 insertions(+), 17 deletions(-)
>>
>> diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
>> index 3de43df6bbe8..3ab48a6925fe 100644
>> --- a/drivers/usb/dwc3/dwc3-qcom.c
>> +++ b/drivers/usb/dwc3/dwc3-qcom.c
>> @@ -74,9 +74,9 @@ struct dwc3_qcom {
>>   	struct reset_control	*resets;
>>   
>>   	int			hs_phy_irq;
>> -	int			dp_hs_phy_irq;
>> -	int			dm_hs_phy_irq;
>> -	int			ss_phy_irq;
>> +	int			dp_hs_phy_irq[4];
>> +	int			dm_hs_phy_irq[4];
>> +	int			ss_phy_irq[2];
> Not sure if that's been raised previously, but having raw numbers here
> is not very descriptive.. MAX_NUM_MP_HSPHY or something would be helpful
> for readability..
> 
> Konrad

Hi Konrad,

   This has been implented in v9. Wasn't there till v8.
Yes, will replace numbers with Macros.

Regards,
Krishna,

>>   	enum usb_device_speed	usb2_speed;
>>   
>>   	struct extcon_dev	*edev;
>> @@ -375,16 +375,16 @@ static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom)
>>   	dwc3_qcom_disable_wakeup_irq(qcom->hs_phy_irq);
>>   
>>   	if (qcom->usb2_speed == USB_SPEED_LOW) {
>> -		dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq);
>> +		dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq[0]);
>>   	} else if ((qcom->usb2_speed == USB_SPEED_HIGH) ||
>>   			(qcom->usb2_speed == USB_SPEED_FULL)) {
>> -		dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq);
>> +		dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq[0]);
>>   	} else {
>> -		dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq);
>> -		dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq);
>> +		dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq[0]);
>> +		dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq[0]);
>>   	}
>>   
>> -	dwc3_qcom_disable_wakeup_irq(qcom->ss_phy_irq);
>> +	dwc3_qcom_disable_wakeup_irq(qcom->ss_phy_irq[0]);
>>   }
>>   
>>   static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
>> @@ -401,20 +401,20 @@ static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
>>   	 */
>>   
>>   	if (qcom->usb2_speed == USB_SPEED_LOW) {
>> -		dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq,
>> +		dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq[0],
>>   						IRQ_TYPE_EDGE_FALLING);
>>   	} else if ((qcom->usb2_speed == USB_SPEED_HIGH) ||
>>   			(qcom->usb2_speed == USB_SPEED_FULL)) {
>> -		dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq,
>> +		dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq[0],
>>   						IRQ_TYPE_EDGE_FALLING);
>>   	} else {
>> -		dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq,
>> +		dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq[0],
>>   						IRQ_TYPE_EDGE_RISING);
>> -		dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq,
>> +		dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq[0],
>>   						IRQ_TYPE_EDGE_RISING);
>>   	}
>>   
>> -	dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq, 0);
>> +	dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq[0], 0);
>>   }
>>   
>>   static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup)
>> @@ -535,6 +535,80 @@ static int dwc3_qcom_get_irq(struct platform_device *pdev,
>>   	return ret;
>>   }
>>   
>> +static int dwc3_qcom_setup_mp_irq(struct platform_device *pdev)
>> +{
>> +	struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
>> +	char irq_name[15];
>> +	int irq;
>> +	int ret;
>> +	int i;
>> +
>> +	for (i = 0; i < 4; i++) {
>> +		if (qcom->dp_hs_phy_irq[i])
>> +			continue;
>> +
>> +		sprintf(irq_name, "dp%d_hs_phy_irq", i+1);
>> +		irq = dwc3_qcom_get_irq(pdev, irq_name, -1);
>> +		if (irq > 0) {
>> +			irq_set_status_flags(irq, IRQ_NOAUTOEN);
>> +			ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
>> +					qcom_dwc3_resume_irq,
>> +					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
>> +					irq_name, qcom);
>> +			if (ret) {
>> +				dev_err(qcom->dev, "%s failed: %d\n", irq_name, ret);
>> +				return ret;
>> +			}
>> +		}
>> +
>> +		qcom->dp_hs_phy_irq[i] = irq;
>> +	}
>> +
>> +	for (i = 0; i < 4; i++) {
>> +		if (qcom->dm_hs_phy_irq[i])
>> +			continue;
>> +
>> +		sprintf(irq_name, "dm%d_hs_phy_irq", i+1);
>> +		irq = dwc3_qcom_get_irq(pdev, irq_name, -1);
>> +		if (irq > 0) {
>> +			irq_set_status_flags(irq, IRQ_NOAUTOEN);
>> +			ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
>> +					qcom_dwc3_resume_irq,
>> +					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
>> +					irq_name, qcom);
>> +			if (ret) {
>> +				dev_err(qcom->dev, "%s failed: %d\n", irq_name, ret);
>> +				return ret;
>> +			}
>> +		}
>> +
>> +		qcom->dm_hs_phy_irq[i] = irq;
>> +	}
>> +
>> +	for (i = 0; i < 2; i++) {
>> +		if (qcom->ss_phy_irq[i])
>> +			continue;
>> +
>> +		sprintf(irq_name, "ss%d_phy_irq", i+1);
>> +		irq = dwc3_qcom_get_irq(pdev, irq_name, -1);
>> +		if (irq > 0) {
>> +			irq_set_status_flags(irq, IRQ_NOAUTOEN);
>> +			ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
>> +					qcom_dwc3_resume_irq,
>> +					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
>> +					irq_name, qcom);
>> +			if (ret) {
>> +				dev_err(qcom->dev, "%s failed: %d\n", irq_name, ret);
>> +				return ret;
>> +			}
>> +		}
>> +
>> +		qcom->ss_phy_irq[i] = irq;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>>   static int dwc3_qcom_setup_irq(struct platform_device *pdev)
>>   {
>>   	struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
>> @@ -570,7 +644,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev)
>>   			dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret);
>>   			return ret;
>>   		}
>> -		qcom->dp_hs_phy_irq = irq;
>> +		qcom->dp_hs_phy_irq[0] = irq;
>>   	}
>>   
>>   	irq = dwc3_qcom_get_irq(pdev, "dm_hs_phy_irq",
>> @@ -585,7 +659,7 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev)
>>   			dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret);
>>   			return ret;
>>   		}
>> -		qcom->dm_hs_phy_irq = irq;
>> +		qcom->dm_hs_phy_irq[0] = irq;
>>   	}
>>   
>>   	irq = dwc3_qcom_get_irq(pdev, "ss_phy_irq",
>> @@ -600,10 +674,10 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev)
>>   			dev_err(qcom->dev, "ss_phy_irq failed: %d\n", ret);
>>   			return ret;
>>   		}
>> -		qcom->ss_phy_irq = irq;
>> +		qcom->ss_phy_irq[0] = irq;
>>   	}
>>   
>> -	return 0;
>> +	return dwc3_qcom_setup_mp_irq(pdev);;
>>   }
>>   
>>   static int dwc3_qcom_clk_init(struct dwc3_qcom *qcom, int count)