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From: Russell King <rmk+kernel@arm.linux.org.uk>
To: alsa-devel@alsa-project.org,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linux-omap@vger.kernel.org,
	linux-sh@vger.kernel.org
Subject: [PATCH 05/10] clkdev: add clkdev_create() helper
Date: Mon, 02 Mar 2015 17:06:26 +0000
Message-ID: <E1YSTnW-0001Jk-Tm@rmk-PC.arm.linux.org.uk> (raw)
In-Reply-To: <20150302170538.GQ8656@n2100.arm.linux.org.uk>

Add a helper to allocate and add a clk_lookup structure.  This can not
only be used in several places in clkdev.c to simplify the code, but
more importantly, can be used by callers of the clkdev code to simplify
their clkdev creation and registration.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 drivers/clk/clkdev.c   | 52 ++++++++++++++++++++++++++++++++++++++------------
 include/linux/clkdev.h |  3 +++
 2 files changed, 43 insertions(+), 12 deletions(-)

diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
index 043fd3633373..611b9acbad78 100644
--- a/drivers/clk/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -294,6 +294,19 @@ vclkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt,
 	return &cla->cl;
 }
 
+static struct clk_lookup *
+vclkdev_create((struct clk *clk, const char *con_id, const char *dev_fmt,
+	va_list ap)
+{
+	struct clk_lookup *cl;
+
+	cl = vclkdev_alloc(clk, con_id, dev_fmt, ap);
+	if (cl)
+		clkdev_add(cl);
+
+	return cl;
+}
+
 struct clk_lookup * __init_refok
 clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
 {
@@ -308,6 +321,28 @@ clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
 }
 EXPORT_SYMBOL(clkdev_alloc);
 
+/**
+ * clkdev_create - allocate and add a clkdev lookup structure
+ * @clk: struct clk to associate with all clk_lookups
+ * @con_id: connection ID string on device
+ * @dev_fmt: format string describing device name
+ *
+ * Returns a clk_lookup structure, which can be later unregistered and
+ * freed.
+ */
+struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
+	const char *dev_fmt, ...)
+{
+	struct clk_lookup *cl;
+	va_list ap;
+
+	va_start(ap, dev_fmt);
+	cl = vclkdev_create(clk, con_id, dev_fmt, ap);
+	va_end(ap);
+
+	return cl;
+}
+
 int clk_add_alias(const char *alias, const char *alias_dev_name, char *id,
 	struct device *dev)
 {
@@ -317,12 +352,10 @@ int clk_add_alias(const char *alias, const char *alias_dev_name, char *id,
 	if (IS_ERR(r))
 		return PTR_ERR(r);
 
-	l = clkdev_alloc(r, alias, alias_dev_name);
+	l = vclkdev_create(r, alias, "%s", alias_dev_name);
 	clk_put(r);
-	if (!l)
-		return -ENODEV;
-	clkdev_add(l);
-	return 0;
+
+	return l ? 0 : -ENODEV;
 }
 EXPORT_SYMBOL(clk_add_alias);
 
@@ -362,15 +395,10 @@ int clk_register_clkdev(struct clk *clk, const char *con_id,
 		return PTR_ERR(clk);
 
 	va_start(ap, dev_fmt);
-	cl = vclkdev_alloc(clk, con_id, dev_fmt, ap);
+	cl = vclkdev_create(clk, con_id, dev_fmt, ap);
 	va_end(ap);
 
-	if (!cl)
-		return -ENOMEM;
-
-	clkdev_add(cl);
-
-	return 0;
+	return cl ? 0 : -ENOMEM;
 }
 EXPORT_SYMBOL(clk_register_clkdev);
 
diff --git a/include/linux/clkdev.h b/include/linux/clkdev.h
index 94bad77eeb4a..6f32f6d8b6ee 100644
--- a/include/linux/clkdev.h
+++ b/include/linux/clkdev.h
@@ -37,6 +37,9 @@ struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
 void clkdev_add(struct clk_lookup *cl);
 void clkdev_drop(struct clk_lookup *cl);
 
+struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
+	const char *dev_fmt, ...);
+
 void clkdev_add_table(struct clk_lookup *, size_t);
 int clk_add_alias(const char *, const char *, char *, struct device *);
 
-- 
1.8.3.1


  parent reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-02 17:05 [PATCH 00/10] initial clkdev cleanups Russell King - ARM Linux
2015-03-02 17:06 ` [PATCH 01/10] media: omap3isp: remove unused clkdev Russell King
2015-03-02 22:33   ` Laurent Pinchart
2015-03-02 22:53     ` Sakari Ailus
2015-03-02 23:54       ` Russell King - ARM Linux
2015-03-03  0:39         ` Laurent Pinchart
2015-03-03 22:09           ` Sakari Ailus
2015-03-03 23:09         ` Sakari Ailus
2015-03-02 17:06 ` [PATCH 02/10] SH: use clkdev_add_table() Russell King
2015-03-02 17:18   ` Geert Uytterhoeven
2015-03-02 17:06 ` [PATCH 03/10] clk: versatile: convert Integrator IM/PD-1 to " Russell King
2015-03-02 17:06 ` [PATCH 04/10] ARM: lpc32xx: convert " Russell King
2015-03-02 17:06 ` Russell King [this message]
2015-03-02 17:22   ` [PATCH 05/10] clkdev: add clkdev_create() helper Geert Uytterhoeven
2015-03-02 17:46     ` Russell King - ARM Linux
2015-03-02 20:36       ` Geert Uytterhoeven
2015-03-02 19:07   ` Stephen Boyd
2015-03-02 21:01     ` Russell King - ARM Linux
2015-03-02 21:54       ` Stephen Boyd
2015-03-02 17:06 ` [PATCH 06/10] ASOC: migor: use clkdev_create() Russell King
2015-03-02 17:29   ` Mark Brown
2015-03-02 17:06 ` [PATCH 07/10] clk: s2mps11: " Russell King
2015-03-02 17:06 ` [PATCH 08/10] ARM: orion: " Russell King
2015-03-03 10:25   ` Thomas Petazzoni
2015-03-02 17:06 ` [PATCH 09/10] ARM: omap2: " Russell King
2015-03-02 17:06 ` [PATCH 10/10] ARM: omap2: use clkdev_add_alias() Russell King
2015-03-03  0:13   ` Tony Lindgren
2015-03-02 21:50 ` [PATCH 00/10] initial clkdev cleanups Stephen Boyd
2015-03-03 15:56   ` Andy Shevchenko

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