Messages in this thread Patch in this message | | | From | Viresh Kumar <> | Subject | [PATCH 3/5] OPP: Add dev_pm_opp_get_supplies() | Date | Tue, 31 May 2022 15:40:02 +0530 |
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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.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/opp/core.c | 22 ++++++++++++++++++++++ include/linux/pm_opp.h | 7 +++++++ 2 files changed, 29 insertions(+)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 2f76442845be..58ce1240e808 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -113,6 +113,28 @@ 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 diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 7e7986106274..185503aab64d 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -128,6 +128,8 @@ void dev_pm_opp_put_opp_table(struct opp_table *opp_table); unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp); +int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies); + unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp); unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp); @@ -216,6 +218,11 @@ static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) return 0; } +static inline int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies) +{ + return -EOPNOTSUPP; +} + static inline unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp) { return 0; -- 2.31.1.272.g89b43f80a514
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