[ARM] aaec2000: convert to simple clk API

aaec2000 only uses the clk API for the framebuffer, so there's
no point having a complicated implementation.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-aaec2000/Makefile

@@ -3,7 +3,7 @@
 #
 
 # Common support (must be linked before board specific support)
-obj-y += core.o clock.o
+obj-y += core.o
 
 # Specific board support
 obj-$(CONFIG_MACH_AAED2000) += aaed2000.o

arch/arm/mach-aaec2000/clock.c

-/*
- *  linux/arch/arm/mach-aaec2000/clock.c
- *
- *  Copyright (C) 2005 Nicolas Bellido Y Ortega
- *
- *  Based on linux/arch/arm/mach-integrator/clock.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/string.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-
-#include "clock.h"
-
-static LIST_HEAD(clocks);
-static DEFINE_MUTEX(clocks_mutex);
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
-	struct clk *p, *clk = ERR_PTR(-ENOENT);
-
-	mutex_lock(&clocks_mutex);
-	list_for_each_entry(p, &clocks, node) {
-		if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
-			clk = p;
-			break;
-		}
-	}
-	mutex_unlock(&clocks_mutex);
-
-	return clk;
-}
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-	module_put(clk->owner);
-}
-EXPORT_SYMBOL(clk_put);
-
-int clk_enable(struct clk *clk)
-{
-	return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-void clk_disable(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_disable);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
-	return clk->rate;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
-	return rate;
-}
-EXPORT_SYMBOL(clk_round_rate);
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
-	return 0;
-}
-EXPORT_SYMBOL(clk_set_rate);
-
-int clk_register(struct clk *clk)
-{
-	mutex_lock(&clocks_mutex);
-	list_add(&clk->node, &clocks);
-	mutex_unlock(&clocks_mutex);
-	return 0;
-}
-EXPORT_SYMBOL(clk_register);
-
-void clk_unregister(struct clk *clk)
-{
-	mutex_lock(&clocks_mutex);
-	list_del(&clk->node);
-	mutex_unlock(&clocks_mutex);
-}
-EXPORT_SYMBOL(clk_unregister);
-
-static int __init clk_init(void)
-{
-	return 0;
-}
-arch_initcall(clk_init);

arch/arm/mach-aaec2000/clock.h

-/*
- *  linux/arch/arm/mach-aaec2000/clock.h
- *
- *  Copyright (C) 2005 Nicolas Bellido Y Ortega
- *
- *  Based on linux/arch/arm/mach-integrator/clock.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-struct module;
-
-struct clk {
-	struct list_head	node;
-	unsigned long		rate;
-	struct module		*owner;
-	const char		*name;
-	void			*data;
-};
-
-int clk_register(struct clk *clk);
-void clk_unregister(struct clk *clk);

arch/arm/mach-aaec2000/core.c

@@ -19,6 +19,7 @@
 #include <linux/interrupt.h>
 #include <linux/timex.h>
 #include <linux/signal.h>
+#include <linux/clk.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
@@ -30,7 +31,6 @@
 #include <asm/mach/map.h>
 
 #include "core.h"
-#include "clock.h"
 
 /*
  * Common I/O mapping:
@@ -229,9 +229,28 @@ static struct amba_device *amba_devs[] __initdata = {
 	&clcd_device,
 };
 
-static struct clk aaec2000_clcd_clk = {
-	.name = "CLCDCLK",
-};
+void clk_disable(struct clk *clk)
+{
+}
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	return 0;
+}
+
+int clk_enable(struct clk *clk)
+{
+	return 0;
+}
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+	return dev && strcmp(dev_name(dev), "mb:16") == 0 ? NULL : ERR_PTR(-ENOENT);
+}
+
+void clk_put(struct clk *clk)
+{
+}
 
 void __init aaec2000_set_clcd_plat_data(struct aaec2000_clcd_info *clcd)
 {
@@ -265,8 +284,6 @@ static int __init aaec2000_init(void)
 {
 	int i;
 
-	clk_register(&aaec2000_clcd_clk);
-
 	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 		struct amba_device *d = amba_devs[i];
 		amba_device_register(d, &iomem_resource);