linux-kernel - [PATCH v3 03/15] opp: Add devres wrapper for dev_pm_opp_set_supported

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Message-Id: <20210314163408.22292-4-digetx@gmail.com>
Date:   Sun, 14 Mar 2021 19:33:56 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Qiang Yu <yuq825@...il.com>, Rob Clark <robdclark@...il.com>,
        Sean Paul <sean@...rly.run>, Rob Herring <robh@...nel.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Steven Price <steven.price@....com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Lukasz Luba <lukasz.luba@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Yangtao Li <tiny.windzz@...il.com>
Cc:     Daniel Vetter <daniel@...ll.ch>, dri-devel@...ts.freedesktop.org,
        lima@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        linux-media@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: [PATCH v3 03/15] opp: Add devres wrapper for dev_pm_opp_set_supported_hw

From: Yangtao Li <tiny.windzz@...il.com>

Add devres wrapper for dev_pm_opp_set_supported_hw() to simplify drivers
code.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/opp/core.c     | 29 +++++++++++++++++++++++++++++
 include/linux/pm_opp.h |  8 ++++++++
 2 files changed, 37 insertions(+)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 6217af05141f..34b054bbb28f 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1857,6 +1857,35 @@ void dev_pm_opp_put_supported_hw(struct opp_table *opp_table)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_put_supported_hw);
 
+static void devm_pm_opp_supported_hw_release(void *data)
+{
+	dev_pm_opp_put_supported_hw(data);
+}
+
+/**
+ * devm_pm_opp_set_supported_hw() - Set supported platforms
+ * @dev: Device for which supported-hw has to be set.
+ * @versions: Array of hierarchy of versions to match.
+ * @count: Number of elements in the array.
+ *
+ * This is a resource-managed variant of dev_pm_opp_set_supported_hw().
+ *
+ * Return: 0 on success and errorno otherwise.
+ */
+int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
+				 unsigned int count)
+{
+	struct opp_table *opp_table;
+
+	opp_table = dev_pm_opp_set_supported_hw(dev, versions, count);
+	if (IS_ERR(opp_table))
+		return PTR_ERR(opp_table);
+
+	return devm_add_action_or_reset(dev, devm_pm_opp_supported_hw_release,
+					opp_table);
+}
+EXPORT_SYMBOL_GPL(devm_pm_opp_set_supported_hw);
+
 /**
  * dev_pm_opp_set_prop_name() - Set prop-extn name
  * @dev: Device for which the prop-name has to be set.
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 3e667af57211..e455b187e405 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -144,6 +144,7 @@ int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb
 
 struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
 void dev_pm_opp_put_supported_hw(struct opp_table *opp_table);
+int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
 struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name);
 void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
 struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
@@ -321,6 +322,13 @@ static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
 
 static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {}
 
+static inline int devm_pm_opp_set_supported_hw(struct device *dev,
+					       const u32 *versions,
+					       unsigned int count)
+{
+	return -EOPNOTSUPP;
+}
+
 static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
 			int (*set_opp)(struct dev_pm_set_opp_data *data))
 {
-- 
2.30.2