1 files changed, 104 insertions, 1 deletions

diff --git a/arch/m68k/platform/coldfire/clk.c b/arch/m68k/platform/coldfire/clk.c
index 44da406897e5..c06c0f4a0ffc 100644
--- a/arch/m68k/platform/coldfire/clk.c
+++ b/arch/m68k/platform/coldfire/clk.c
@@ -10,11 +10,17 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
 #include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/err.h>
 #include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfclk.h>
 
 /***************************************************************************/
-
+#ifndef MCFPM_PPMCR0
 struct clk *clk_get(struct device *dev, const char *id)
 {
         return NULL;
@@ -49,4 +55,101 @@ struct clk *devm_clk_get(struct device *dev, const char *id)
 }
 EXPORT_SYMBOL(devm_clk_get);
 
+#else
+static DEFINE_SPINLOCK(clk_lock);
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+        const char *clk_name = dev ? dev_name(dev) : id ? id : NULL;
+        struct clk *clk;
+        unsigned i;
+
+        for (i = 0; (clk = mcf_clks[i]) != NULL; ++i)
+                if (!strcmp(clk->name, clk_name))
+                        return clk;
+        pr_warn("clk_get: didn't find clock %s\n", clk_name);
+        return ERR_PTR(-ENOENT);
+}
+EXPORT_SYMBOL(clk_get);
+
+int clk_enable(struct clk *clk)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&clk_lock, flags);
+        if ((clk->enabled++ == 0) && clk->clk_ops)
+                clk->clk_ops->enable(clk);
+        spin_unlock_irqrestore(&clk_lock, flags);
+
+        return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&clk_lock, flags);
+        if ((--clk->enabled == 0) && clk->clk_ops)
+                clk->clk_ops->disable(clk);
+        spin_unlock_irqrestore(&clk_lock, flags);
+}
+EXPORT_SYMBOL(clk_disable);
+
+void clk_put(struct clk *clk)
+{
+        if (clk->enabled != 0)
+                pr_warn("clk_put %s still enabled\n", clk->name);
+}
+EXPORT_SYMBOL(clk_put);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+        return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
 /***************************************************************************/
+
+void __clk_init_enabled(struct clk *clk)
+{
+        clk->enabled = 1;
+        clk->clk_ops->enable(clk);
+}
+
+void __clk_init_disabled(struct clk *clk)
+{
+        clk->enabled = 0;
+        clk->clk_ops->disable(clk);
+}
+
+static void __clk_enable0(struct clk *clk)
+{
+        __raw_writeb(clk->slot, MCFPM_PPMCR0);
+}
+
+static void __clk_disable0(struct clk *clk)
+{
+        __raw_writeb(clk->slot, MCFPM_PPMSR0);
+}
+
+struct clk_ops clk_ops0 = {
+        .enable         = __clk_enable0,
+        .disable        = __clk_disable0,
+};
+
+#ifdef MCFPM_PPMCR1
+static void __clk_enable1(struct clk *clk)
+{
+        __raw_writeb(clk->slot, MCFPM_PPMCR1);
+}
+
+static void __clk_disable1(struct clk *clk)
+{
+        __raw_writeb(clk->slot, MCFPM_PPMSR1);
+}
+
+struct clk_ops clk_ops1 = {
+        .enable         = __clk_enable1,
+        .disable        = __clk_disable1,
+};
+#endif /* MCFPM_PPMCR1 */
+#endif /* MCFPM_PPMCR0 */