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Date: Wed, 21 Nov 2012 21:34:40 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org,
Russell King <linux@....linux.org.uk>,
Mike Turquette <mturquette@...com>,
Viresh Kumar <viresh.kumar@...aro.org>,
Shawn Guo <shawn.guo@...aro.org>
Subject: [PATCH v2 1/3] CLK: get rid of HAVE_CLK_PREPARE
HAVE_CLK_PREPARE is automatically selected by COMMON_CLK and the only
platform that explicitly selects HAVE_CLK_PREPARE is MXS which has been
switched to common clk framework, so we can delete this option now.
As part of this change we move declarations of clk_prepare() and
clk_unprepare() under HAVE_CLK and provide stubs if this option is not
enabled.
Reviewed-by: Viresh Kumar <viresh.kumar@...aro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
arch/arm/Kconfig | 1 -
drivers/clk/Kconfig | 4 ----
include/linux/clk.h | 68 +++++++++++++++++++++++++----------------------------
3 files changed, 32 insertions(+), 41 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ade7e92..ae6c1df 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -453,7 +453,6 @@ config ARCH_MXS
select CLKSRC_MMIO
select COMMON_CLK
select GENERIC_CLOCKEVENTS
- select HAVE_CLK_PREPARE
select MULTI_IRQ_HANDLER
select PINCTRL
select SPARSE_IRQ
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index bace9e9..639ee9d 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -3,15 +3,11 @@ config CLKDEV_LOOKUP
bool
select HAVE_CLK
-config HAVE_CLK_PREPARE
- bool
-
config HAVE_MACH_CLKDEV
bool
config COMMON_CLK
bool
- select HAVE_CLK_PREPARE
select CLKDEV_LOOKUP
---help---
The common clock framework is a single definition of struct
diff --git a/include/linux/clk.h b/include/linux/clk.h
index b3ac22d..f8204c3 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -84,42 +84,6 @@ int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb);
#endif
-/**
- * clk_prepare - prepare a clock source
- * @clk: clock source
- *
- * This prepares the clock source for use.
- *
- * Must not be called from within atomic context.
- */
-#ifdef CONFIG_HAVE_CLK_PREPARE
-int clk_prepare(struct clk *clk);
-#else
-static inline int clk_prepare(struct clk *clk)
-{
- might_sleep();
- return 0;
-}
-#endif
-
-/**
- * clk_unprepare - undo preparation of a clock source
- * @clk: clock source
- *
- * This undoes a previously prepared clock. The caller must balance
- * the number of prepare and unprepare calls.
- *
- * Must not be called from within atomic context.
- */
-#ifdef CONFIG_HAVE_CLK_PREPARE
-void clk_unprepare(struct clk *clk);
-#else
-static inline void clk_unprepare(struct clk *clk)
-{
- might_sleep();
-}
-#endif
-
#ifdef CONFIG_HAVE_CLK
/**
* clk_get - lookup and obtain a reference to a clock producer.
@@ -159,6 +123,27 @@ struct clk *clk_get(struct device *dev, const char *id);
struct clk *devm_clk_get(struct device *dev, const char *id);
/**
+ * clk_prepare - prepare a clock source
+ * @clk: clock source
+ *
+ * This prepares the clock source for use.
+ *
+ * Must not be called from within atomic context.
+ */
+int clk_prepare(struct clk *clk);
+
+/**
+ * clk_unprepare - undo preparation of a clock source
+ * @clk: clock source
+ *
+ * This undoes a previously prepared clock. The caller must balance
+ * the number of prepare and unprepare calls.
+ *
+ * Must not be called from within atomic context.
+ */
+void clk_unprepare(struct clk *clk);
+
+/**
* clk_enable - inform the system when the clock source should be running.
* @clk: clock source
*
@@ -292,6 +277,17 @@ static inline void clk_put(struct clk *clk) {}
static inline void devm_clk_put(struct device *dev, struct clk *clk) {}
+static inline int clk_prepare(struct clk *clk)
+{
+ might_sleep();
+ return 0;
+}
+
+static inline void clk_unprepare(struct clk *clk)
+{
+ might_sleep();
+}
+
static inline int clk_enable(struct clk *clk)
{
return 0;
--
1.7.11.7
--
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