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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>
hifive-unleashed-5.1
Viresh Kumar 2016-02-09 10:30:34 +05:30 committed by Rafael J. Wysocki
parent 9f8ea969d5
commit 7d34d56ef3
1 changed files with 22 additions and 0 deletions
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22
drivers/base/power/opp/core.c
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@ -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;
}