From d1755e3592305f8866b4d60d63a481959d5e58bf Mon Sep 17 00:00:00 2001
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Mon, 16 Feb 2009 14:27:06 +0100
Subject: [ARM] MXC: add clkdev support
This patch only adds general clkdev support without actually switching
any MXC architecture to clkdev.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/plat-mxc/clock.c | 10 ++++++++++
arch/arm/plat-mxc/include/mach/clkdev.h | 7 +++++++
arch/arm/plat-mxc/include/mach/clock.h | 4 ++++
3 files changed, 21 insertions(+)
create mode 100644 arch/arm/plat-mxc/include/mach/clkdev.h
(limited to 'arch/arm')
diff --git a/arch/arm/plat-mxc/clock.c b/arch/arm/plat-mxc/clock.c
index 888dd33..92e1356 100644
--- a/arch/arm/plat-mxc/clock.c
+++ b/arch/arm/plat-mxc/clock.c
@@ -48,6 +48,11 @@ static DEFINE_MUTEX(clocks_mutex);
*-------------------------------------------------------------------------*/
/*
+ * All the code inside #ifndef CONFIG_COMMON_CLKDEV can be removed once all
+ * MXC architectures have switched to using clkdev.
+ */
+#ifndef CONFIG_COMMON_CLKDEV
+/*
* Retrieve a clock by name.
*
* Note that we first try to use device id on the bus
@@ -110,6 +115,7 @@ found:
return clk;
}
EXPORT_SYMBOL(clk_get);
+#endif
static void __clk_disable(struct clk *clk)
{
@@ -187,6 +193,7 @@ unsigned long clk_get_rate(struct clk *clk)
}
EXPORT_SYMBOL(clk_get_rate);
+#ifndef CONFIG_COMMON_CLKDEV
/* Decrement the clock's module reference count */
void clk_put(struct clk *clk)
{
@@ -194,6 +201,7 @@ void clk_put(struct clk *clk)
module_put(clk->owner);
}
EXPORT_SYMBOL(clk_put);
+#endif
/* Round the requested clock rate to the nearest supported
* rate that is less than or equal to the requested rate.
@@ -257,6 +265,7 @@ struct clk *clk_get_parent(struct clk *clk)
}
EXPORT_SYMBOL(clk_get_parent);
+#ifndef CONFIG_COMMON_CLKDEV
/*
* Add a new clock to the clock tree.
*/
@@ -327,6 +336,7 @@ static int __init mxc_setup_proc_entry(void)
}
late_initcall(mxc_setup_proc_entry);
+#endif /* CONFIG_PROC_FS */
#endif
/*
diff --git a/arch/arm/plat-mxc/include/mach/clkdev.h b/arch/arm/plat-mxc/include/mach/clkdev.h
new file mode 100644
index 0000000..04b37a8
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/clkdev.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif
diff --git a/arch/arm/plat-mxc/include/mach/clock.h b/arch/arm/plat-mxc/include/mach/clock.h
index b830655..43a82d0 100644
--- a/arch/arm/plat-mxc/include/mach/clock.h
+++ b/arch/arm/plat-mxc/include/mach/clock.h
@@ -26,9 +26,13 @@
struct module;
struct clk {
+#ifndef CONFIG_COMMON_CLKDEV
+ /* As soon as i.MX1 and i.MX31 switched to clkdev, this
+ * block can go away */
struct list_head node;
struct module *owner;
const char *name;
+#endif
int id;
/* Source clock this clk depends on */
struct clk *parent;
--
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