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Commit 7d34d56e authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki
Browse files

PM / OPP: Disable OPPs that aren't supported by the regulator 



Disable any OPPs where the connected regulator isn't able to provide the
specified voltage.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 9f8ea969

drivers/base/power/opp/core.c

+22 −0
Original line number Diff line number Diff line
@@ -687,6 +687,22 @@ static struct dev_pm_opp *_allocate_opp(struct device *dev, 
	return opp;

}



static bool _opp_supported_by_regulators(struct dev_pm_opp *opp,

					 struct device_opp *dev_opp)

{

	struct regulator *reg = dev_opp->regulator;



	if (!IS_ERR(reg) &&

	    !regulator_is_supported_voltage(reg, opp->u_volt_min,

					    opp->u_volt_max)) {

		pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n",

			__func__, opp->u_volt_min, opp->u_volt_max);

		return false;

	}



	return true;

}



static int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,

		    struct device_opp *dev_opp)

{
@@ -728,6 +744,12 @@ static int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, 
		dev_err(dev, "%s: Failed to register opp to debugfs (%d)\n",

			__func__, ret);



	if (!_opp_supported_by_regulators(new_opp, dev_opp)) {

		new_opp->available = false;

		dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n",

			 __func__, new_opp->rate);

	}



	return 0;

}