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Subject[PATCH v2 1/4] opp: core: add regulators enable and disable
Date
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>
--
Changes in v2:

- move regulator enable and disable into loop

---
drivers/opp/core.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 0e7703fe733f..069c5cf8827e 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1570,6 +1570,10 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
goto free_regulators;
}

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

@@ -1582,9 +1586,15 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,

return opp_table;

+disable:
+ regulator_put(reg);
+ --i;
+
free_regulators:
- while (i != 0)
- regulator_put(opp_table->regulators[--i]);
+ for (; i >= 0; --i) {
+ regulator_disable(opp_table->regulators[i]);
+ regulator_put(opp_table->regulators[i]);
+ }

kfree(opp_table->regulators);
opp_table->regulators = NULL;
@@ -1610,8 +1620,10 @@ 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);

--
2.22.0
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