linux-kernel - [PATCH 1/2] clk: of: helper for determining flags properties

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Message-Id: <1399982253-21079-2-git-send-email-gabriel.fernandez@linaro.org>
Date:	Tue, 13 May 2014 13:57:32 +0200
From:	Gabriel FERNANDEZ <gabriel.fernandez@...com>
To:	mturquette@...aro.org, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, rdunlap@...radead.org
Cc:	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	kernel@...inux.com, Lee Jones <lee.jones@...aro.org>,
	Gabriel Fernandez <gabriel.fernandez@...aro.org>
Subject: [PATCH 1/2] clk: of: helper for determining flags properties

The patch provides a helper to get flags properties of
a clock node.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@...aro.org>
---
 drivers/clk/clk.c            | 11 +++++++++++
 include/linux/clk-provider.h |  6 ++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 4d56220..cae8985 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2528,6 +2528,17 @@ const char *of_clk_get_parent_name(struct device_node *np, int index)
 }
 EXPORT_SYMBOL_GPL(of_clk_get_parent_name);
 
+unsigned long of_clk_get_flags(struct device_node *np)
+{
+	unsigned long flags = 0;
+
+	if (of_property_read_bool(np, "set-rate-parent"))
+		flags |= CLK_SET_RATE_PARENT;
+
+	return flags;
+}
+EXPORT_SYMBOL_GPL(of_clk_get_flags);
+
 struct clock_provider {
 	of_clk_init_cb_t clk_init_cb;
 	struct device_node *np;
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 59e2eb5..650bc10 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -519,6 +519,7 @@ int of_clk_get_parent_count(struct device_node *np);
 const char *of_clk_get_parent_name(struct device_node *np, int index);
 
 void of_clk_init(const struct of_device_id *matches);
+unsigned long of_clk_get_flags(struct device_node *np);
 
 #else /* !CONFIG_OF */
 
@@ -546,6 +547,11 @@ static inline const char *of_clk_get_parent_name(struct device_node *np,
 {
 	return NULL;
 }
+static inline unsigned long of_clk_get_flags(struct device_node *np)
+{
+	return NULL;
+}
+
 #define of_clk_init(matches) \
 	{ while (0); }
 #endif /* CONFIG_OF */
-- 
1.9.1

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