linux-kernel - [PATCH V2 3/3] opp: Add dev_pm_opp_of_add_table

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Date:   Thu, 28 Jan 2021 12:30:09 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dmitry Osipenko <digetx@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH V2 3/3] opp: Add dev_pm_opp_of_add_table_noclk()

A few drivers have device's clk but they don't want the OPP core to
handle that. Add a new helper for them, dev_pm_opp_of_add_table_noclk().

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
V2:
- Split this into a separate patch.

 drivers/opp/of.c       | 18 ++++++++++++++++++
 include/linux/pm_opp.h |  6 ++++++
 2 files changed, 24 insertions(+)

diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index d4b51b2e384f..a905497c75f8 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -1030,6 +1030,24 @@ int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_indexed);
 
+/**
+ * dev_pm_opp_of_add_table_noclk() - Initialize indexed opp table from device
+ *		tree without getting clk for device.
+ * @dev:	device pointer used to lookup OPP table.
+ * @index:	Index number.
+ *
+ * Register the initial OPP table with the OPP library for given device only
+ * using the "operating-points-v2" property. Do not try to get the clk for the
+ * device.
+ *
+ * Return: Refer to dev_pm_opp_of_add_table() for return values.
+ */
+int dev_pm_opp_of_add_table_noclk(struct device *dev, int index)
+{
+	return _of_add_table_indexed(dev, index, false);
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_noclk);
+
 /* CPU device specific helpers */
 
 /**
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 979b208bc4a8..158158620dde 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -395,6 +395,7 @@ static inline int dev_pm_opp_sync_regulators(struct device *dev)
 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
 int dev_pm_opp_of_add_table(struct device *dev);
 int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
+int dev_pm_opp_of_add_table_noclk(struct device *dev, int index);
 void dev_pm_opp_of_remove_table(struct device *dev);
 int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
 void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
@@ -419,6 +420,11 @@ static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
 	return -ENOTSUPP;
 }
 
+static inline int dev_pm_opp_of_add_table_noclk(struct device *dev, int index)
+{
+	return -ENOTSUPP;
+}
+
 static inline void dev_pm_opp_of_remove_table(struct device *dev)
 {
 }
-- 
2.25.0.rc1.19.g042ed3e048af