diff mbox series

[v3,07/12] opp: Add dev_pm_opp_get_required_pstate()

Message ID 20210118005524.27787-8-digetx@gmail.com (mailing list archive)
State New
Delegated to: viresh kumar
Headers show
Series OPP API fixes and improvements | expand

Commit Message

Dmitry Osipenko Jan. 18, 2021, 12:55 a.m. UTC
Add dev_pm_opp_get_required_pstate() which allows OPP users to retrieve
required performance state of a given OPP.

Tested-by: Peter Geis <pgwipeout@gmail.com>
Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/opp/core.c     | 22 ++++++++++++++++++++++
 include/linux/pm_opp.h | 10 ++++++++++
 2 files changed, 32 insertions(+)

Comments

Viresh Kumar Jan. 18, 2021, 10:50 a.m. UTC | #1
On 18-01-21, 03:55, Dmitry Osipenko wrote:
> Add dev_pm_opp_get_required_pstate() which allows OPP users to retrieve
> required performance state of a given OPP.
> 
> Tested-by: Peter Geis <pgwipeout@gmail.com>
> Tested-by: Nicolas Chauvet <kwizart@gmail.com>
> Tested-by: Matt Merhar <mattmerhar@protonmail.com>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  drivers/opp/core.c     | 22 ++++++++++++++++++++++
>  include/linux/pm_opp.h | 10 ++++++++++
>  2 files changed, 32 insertions(+)
> 
> diff --git a/drivers/opp/core.c b/drivers/opp/core.c
> index df0969002555..fde2ec00ab0e 100644
> --- a/drivers/opp/core.c
> +++ b/drivers/opp/core.c
> @@ -145,6 +145,28 @@ unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
>  }
>  EXPORT_SYMBOL_GPL(dev_pm_opp_get_level);
>  
> +/**
> + * dev_pm_opp_get_required_pstate() - Gets the required performance state
> + *                                    corresponding to an available opp
> + * @opp:	opp for which performance state has to be returned for
> + * @index:	index of the required opp
> + *
> + * Return: performance state read from device tree corresponding to the
> + * required opp, else return 0.
> + */
> +unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
> +					    unsigned int index)
> +{
> +	if (IS_ERR_OR_NULL(opp) || !opp->available ||
> +	    index >= opp->opp_table->required_opp_count) {
> +		pr_err("%s: Invalid parameters\n", __func__);
> +		return 0;
> +	}
> +
> +	return opp->required_opps[index]->pstate;
> +}
> +EXPORT_SYMBOL_GPL(dev_pm_opp_get_required_pstate);
> +
>  /**
>   * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
>   * @opp: opp for which turbo mode is being verified
> diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
> index b7dc993487c7..e072148ae0e1 100644
> --- a/include/linux/pm_opp.h
> +++ b/include/linux/pm_opp.h
> @@ -98,6 +98,9 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
>  
>  unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp);
>  
> +unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
> +					    unsigned int index);
> +
>  bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
>  
>  int dev_pm_opp_get_opp_count(struct device *dev);
> @@ -194,6 +197,13 @@ static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
>  	return 0;
>  }
>  
> +static inline
> +unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
> +					    unsigned int index)
> +{
> +	return 0;
> +}
> +
>  static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
>  {
>  	return false;

Applied. Thanks.
diff mbox series

Patch

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index df0969002555..fde2ec00ab0e 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -145,6 +145,28 @@  unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_get_level);
 
+/**
+ * dev_pm_opp_get_required_pstate() - Gets the required performance state
+ *                                    corresponding to an available opp
+ * @opp:	opp for which performance state has to be returned for
+ * @index:	index of the required opp
+ *
+ * Return: performance state read from device tree corresponding to the
+ * required opp, else return 0.
+ */
+unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
+					    unsigned int index)
+{
+	if (IS_ERR_OR_NULL(opp) || !opp->available ||
+	    index >= opp->opp_table->required_opp_count) {
+		pr_err("%s: Invalid parameters\n", __func__);
+		return 0;
+	}
+
+	return opp->required_opps[index]->pstate;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_required_pstate);
+
 /**
  * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
  * @opp: opp for which turbo mode is being verified
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index b7dc993487c7..e072148ae0e1 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -98,6 +98,9 @@  unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
 
 unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp);
 
+unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
+					    unsigned int index);
+
 bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
 
 int dev_pm_opp_get_opp_count(struct device *dev);
@@ -194,6 +197,13 @@  static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
 	return 0;
 }
 
+static inline
+unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
+					    unsigned int index)
+{
+	return 0;
+}
+
 static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
 {
 	return false;