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

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Message-ID: <b52729a3-4d14-40cc-b426-7bdec5dbfde8@oss.qualcomm.com>
Date: Wed, 4 Feb 2026 22:01:39 +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 2/4/2026 7:14 PM, Konrad Dybcio wrote:
> On 2/4/26 6:06 AM, Praveen Talari wrote:
>> 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.
> 
> I think you can remove these fields from i2c-qcom-geni.c as they seem
> unused now
Got it. will update in next version.

Thanks,
Praveen Talari
> 
> Konrad