From: Magnus Damm <damm@igel.co.jp>
Date: Thu, 17 Jul 2008 10:09:51 +0000 (+0900)
Subject: sh: Introduce clk_always_enable() function
X-Git-Tag: v3.12-rc1~19022^2~15
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=de9254263b8c8b1809520a1009dd516e41976519;p=kernel%2Fkernel-generic.git

sh: Introduce clk_always_enable() function

Add SuperH specific funcion clk_always_enable(), useful to enable MSTPCR
bits in processor or board specific code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

diff --git a/include/asm-sh/clock.h b/include/asm-sh/clock.h
index 252f155..720dfab 100644
--- a/include/asm-sh/clock.h
+++ b/include/asm-sh/clock.h
@@ -5,6 +5,7 @@
 #include <linux/list.h>
 #include <linux/seq_file.h>
 #include <linux/clk.h>
+#include <linux/err.h>
 
 struct clk;
 
@@ -47,6 +48,22 @@ void clk_recalc_rate(struct clk *);
 int clk_register(struct clk *);
 void clk_unregister(struct clk *);
 
+static inline int clk_always_enable(const char *id)
+{
+	struct clk *clk;
+	int ret;
+
+	clk = clk_get(NULL, id);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	ret = clk_enable(clk);
+	if (ret)
+		clk_put(clk);
+
+	return ret;
+}
+
 /* the exported API, in addition to clk_set_rate */
 /**
  * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter