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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: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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1 changed files with 22 additions and 0 deletions
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@ -687,6 +687,22 @@ static struct dev_pm_opp *_allocate_opp(struct device *dev,
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return opp;
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}
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static bool _opp_supported_by_regulators(struct dev_pm_opp *opp,
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struct device_opp *dev_opp)
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{
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struct regulator *reg = dev_opp->regulator;
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if (!IS_ERR(reg) &&
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!regulator_is_supported_voltage(reg, opp->u_volt_min,
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opp->u_volt_max)) {
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pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n",
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__func__, opp->u_volt_min, opp->u_volt_max);
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return false;
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}
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return true;
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}
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static int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
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struct device_opp *dev_opp)
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{
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@ -728,6 +744,12 @@ static int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
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dev_err(dev, "%s: Failed to register opp to debugfs (%d)\n",
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__func__, ret);
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if (!_opp_supported_by_regulators(new_opp, dev_opp)) {
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new_opp->available = false;
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dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n",
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__func__, new_opp->rate);
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}
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return 0;
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}
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