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Subject[PATCH 1/3] opp: core: add regulators enable and disable
Date
From: Kamil Konieczny <k.konieczny@partner.samsung.com>

Add enable regulators to dev_pm_opp_set_regulators() and disable
regulators to dev_pm_opp_put_regulators(). This prepares for
converting exynos-bus devfreq driver to use dev_pm_opp_set_rate().

Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com>
---
drivers/opp/core.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 0e7703fe733f..947cac452854 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1580,8 +1580,19 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
if (ret)
goto free_regulators;

+ for (i = 0; i < opp_table->regulator_count; i++) {
+ ret = regulator_enable(opp_table->regulators[i]);
+ if (ret < 0)
+ goto disable;
+ }
+
return opp_table;

+disable:
+ while (i != 0)
+ regulator_disable(opp_table->regulators[--i]);
+
+ i = opp_table->regulator_count;
free_regulators:
while (i != 0)
regulator_put(opp_table->regulators[--i]);
@@ -1609,6 +1620,8 @@ 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--)
+ regulator_disable(opp_table->regulators[i]);

for (i = opp_table->regulator_count - 1; i >= 0; i--)
regulator_put(opp_table->regulators[i]);
--
2.22.0
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