linux-kernel - Re: [PATCH v4 11/13] i2c: qcom-geni: Use resources helper APIs in runtime PM functions

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Message-ID: <3466212b-802c-4ea3-8661-794da34c6c3e@oss.qualcomm.com>
Date: Wed, 4 Feb 2026 10:36:19 +0530
From: Praveen Talari <praveen.talari@....qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Andi Shyti <andi.shyti@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Mukesh Kumar Savaliya <mukesh.savaliya@....qualcomm.com>,
        Viken Dadhaniya <viken.dadhaniya@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, bjorn.andersson@....qualcomm.com,
        dmitry.baryshkov@....qualcomm.com
Cc: prasad.sodagudi@....qualcomm.com, quic_vtanuku@...cinc.com,
        aniket.randive@....qualcomm.com, chandana.chiluveru@....qualcomm.com,
        jyothi.seerapu@....qualcomm.com
Subject: Re: [PATCH v4 11/13] i2c: qcom-geni: Use resources helper APIs in
 runtime PM functions

Hi Konrad,

On 2/3/2026 6:18 PM, Konrad Dybcio wrote:
> On 2/2/26 7:09 PM, Praveen Talari wrote:
>> To manage GENI serial engine resources during runtime power management,
>> drivers currently need to call functions for ICC, clock, and
>> SE resource operations in both suspend and resume paths, resulting in
>> code duplication across drivers.
>>
>> The new geni_se_resources_activate() and geni_se_resources_deactivate()
>> helper APIs addresses this issue by providing a streamlined method to
>> enable or disable all resources based, thereby eliminating redundancy
>> across drivers.
>>
>> Acked-by: Viken Dadhaniya <viken.dadhaniya@....qualcomm.com>
>> Signed-off-by: Praveen Talari <praveen.talari@....qualcomm.com>
>> ---
> 
> [...]
> 
> 
>>   	disable_irq(gi2c->irq);
>> -	ret = geni_se_resources_off(&gi2c->se);
>> +
>> +	ret = geni_se_resources_deactivate(&gi2c->se);
>>   	if (ret) {
>>   		enable_irq(gi2c->irq);
>>   		return ret;
>> -
>> -	} else {
>> -		gi2c->suspended = 1;
>>   	}
>>   
>> -	clk_disable_unprepare(gi2c->core_clk);
> 
> I believe you can give gi2c->core_clk and desc->has_core_clk the boot
> with this patch since they're no longer referenced anywhere

Sorry i didn't get you. Please share more on this.

Thanks,
Praveen Talari
> 
> Konrad