linux-kernel - Re: [PATCH v3 2/4] OPP: Add "opp-microwatt" supporting code

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Message-ID: <20220224090325.m4pl36ma3uettxvg@vireshk-i7>
Date:   Thu, 24 Feb 2022 14:33:25 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Lukasz Luba <lukasz.luba@....com>
Cc:     linux-kernel@...r.kernel.org, dietmar.eggemann@....com,
        rafael@...nel.org, daniel.lezcano@...aro.org, nm@...com,
        sboyd@...nel.org, mka@...omium.org, dianders@...omium.org,
        robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 2/4] OPP: Add "opp-microwatt" supporting code

On 24-02-22, 08:11, Lukasz Luba wrote:
> +/**
> + * dev_pm_opp_get_power() - Gets the power corresponding to an opp
> + * @opp:	opp for which power has to be returned for
> + *
> + * Return: power in micro watt corresponding to the opp, else
> + * return 0
> + *
> + * This is useful only for devices with single power supply.
> + */
> +unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp)
> +{
> +	if (IS_ERR_OR_NULL(opp)) {
> +		pr_err("%s: Invalid parameters\n", __func__);
> +		return 0;
> +	}
> +
> +	return opp->supplies[0].u_watt;

What about returning the total of all u_watts for this OPP here ?
Surely it doesn't make sense to do the same for voltage and current,
but power is different.

-- 
viresh