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authorViresh Kumar <viresh.kumar@linaro.org>2022-05-31 10:54:21 +0300
committerViresh Kumar <viresh.kumar@linaro.org>2022-07-08 08:57:49 +0300
commit69b1af178a3a534da2f20fa0c7356fcbbe8cce1f (patch)
treeeacea8f3e990c335ccb828414a8822b96beb10cd /drivers/opp
parentc522ce8a08066b44539e0dd0998b8e3b277a759b (diff)
downloadlinux-69b1af178a3a534da2f20fa0c7356fcbbe8cce1f.tar.xz
OPP: Add dev_pm_opp_get_supplies()
We already have an API for getting voltage information for a single regulator, dev_pm_opp_get_voltage(), but there is nothing available for multiple regulator case. This patch adds a new API, dev_pm_opp_get_supplies(), to get all information related to the supplies for an OPP. Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp')
-rw-r--r--drivers/opp/core.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 5ecf077b6b17..3a794bff2ba1 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -118,6 +118,31 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
EXPORT_SYMBOL_GPL(dev_pm_opp_get_voltage);
/**
+ * dev_pm_opp_get_supplies() - Gets the supply information corresponding to an opp
+ * @opp: opp for which voltage has to be returned for
+ * @supplies: Placeholder for copying the supply information.
+ *
+ * Return: negative error number on failure, 0 otherwise on success after
+ * setting @supplies.
+ *
+ * This can be used for devices with any number of power supplies. The caller
+ * must ensure the @supplies array must contain space for each regulator.
+ */
+int dev_pm_opp_get_supplies(struct dev_pm_opp *opp,
+ struct dev_pm_opp_supply *supplies)
+{
+ if (IS_ERR_OR_NULL(opp) || !supplies) {
+ pr_err("%s: Invalid parameters\n", __func__);
+ return -EINVAL;
+ }
+
+ memcpy(supplies, opp->supplies,
+ sizeof(*supplies) * opp->opp_table->regulator_count);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_supplies);
+
+/**
* dev_pm_opp_get_power() - Gets the power corresponding to an opp
* @opp: opp for which power has to be returned for
*