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opp: core: add regulators enable and disable 

Add enable regulators to dev_pm_opp_set_regulators() and disable
regulators to dev_pm_opp_put_regulators(). Even if bootloader
leaves regulators enabled, they should be enabled in kernel in
order to increase the reference count.

Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
k.konieczny@partner.samsung.com 2019-07-19 17:05:32 +02:00 committed by Viresh Kumar
parent 11e1a16482
commit 7f93ff73f7
1 changed files with 13 additions and 3 deletions
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16
drivers/opp/core.c
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@ -1626,6 +1626,12 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
goto free_regulators;
}
ret = regulator_enable(reg);
if (ret < 0) {
regulator_put(reg);
goto free_regulators;
}
opp_table->regulators[i] = reg;
}
@ -1639,8 +1645,10 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
return opp_table;
free_regulators:
while (i != 0)
regulator_put(opp_table->regulators[--i]);
while (i--) {
regulator_disable(opp_table->regulators[i]);
regulator_put(opp_table->regulators[i]);
}
kfree(opp_table->regulators);
opp_table->regulators = NULL;
@ -1666,8 +1674,10 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table)
/* Make sure there are no concurrent readers while updating opp_table */
WARN_ON(!list_empty(&opp_table->opp_list));
for (i = opp_table->regulator_count - 1; i >= 0; i--)
for (i = opp_table->regulator_count - 1; i >= 0; i--) {
regulator_disable(opp_table->regulators[i]);
regulator_put(opp_table->regulators[i]);
}
_free_set_opp_data(opp_table);