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Date: Fri, 11 Nov 2011 09:10:16 +0800
From: Richard Zhao <richard.zhao@...aro.org>
To: <linux-arm-kernel@...ts.infradead.org>,
<linux-i2c@...r.kernel.org>, <linux-mmc@...r.kernel.org>,
<netdev@...r.kernel.org>, <linux-serial@...r.kernel.org>
CC: <linux@....linux.org.uk>, <amit.kucheria@...onical.com>,
<kernel@...gutronix.de>, <ben-linux@...ff.org>, <cjb@...top.org>,
<alan@...ux.intel.com>, <eric.miao@...aro.org>,
Richard Zhao <richard.zhao@...aro.org>
Subject: [PATCH V2 01/14] clk: add helper functions clk_prepare_enable and clk_disable_unprepare
Signed-off-by: Richard Zhao <richard.zhao@...aro.org>
---
include/linux/clk.h | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 7213b52..63985f7 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -107,6 +107,25 @@ static inline void clk_unprepare(struct clk *clk)
}
#endif
+static inline int clk_prepare_enable(struct clk *clk)
+{
+ int ret;
+
+ ret = clk_prepare(clk);
+ if (!ret)
+ ret = clk_enable(clk);
+ if (ret)
+ clk_unprepare(clk);
+
+ return ret;
+}
+
+static inline void clk_disable_unprepare(struct clk *clk)
+{
+ clk_disable(clk);
+ clk_unprepare(clk);
+}
+
/**
* clk_get_rate - obtain the current clock rate (in Hz) for a clock source.
* This is only valid once the clock source has been enabled.
--
1.7.5.4
--
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