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authorDomen Puncer <domen.puncer@telargo.com>2007-09-20 14:00:11 (GMT)
committerPaul Mackerras <paulus@samba.org>2007-10-02 23:11:56 (GMT)
commit6f6682809b994fd9a61081fa0410df31481d5f7f (patch)
treeb70e568099380de0671e50362dce8e7c77c9443d /arch/powerpc/kernel/clock.c
parent21ccdd31e9c70f42b00d9ea152f6c4e0ff3f536e (diff)
downloadlinux-fsl-qoriq-6f6682809b994fd9a61081fa0410df31481d5f7f.tar.xz
[POWERPC] clk.h interface for platforms
This provides an implementation of the <linux/clk.h> interface for arch/powerpc using a set of function pointers in clk_functions. Platforms that want to support this interface should fill clk_functions and select CONFIG_PPC_CLOCK in Kconfig. Signed-off-by: Domen Puncer <domen.puncer@telargo.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/clock.c')
-rw-r--r--arch/powerpc/kernel/clock.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/clock.c b/arch/powerpc/kernel/clock.c
new file mode 100644
index 0000000..ce668f5
--- /dev/null
+++ b/arch/powerpc/kernel/clock.c
@@ -0,0 +1,82 @@
+/*
+ * Dummy clk implementations for powerpc.
+ * These need to be overridden in platform code.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <asm/clk_interface.h>
+
+struct clk_interface clk_functions;
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+ if (clk_functions.clk_get)
+ return clk_functions.clk_get(dev, id);
+ return ERR_PTR(-ENOSYS);
+}
+EXPORT_SYMBOL(clk_get);
+
+void clk_put(struct clk *clk)
+{
+ if (clk_functions.clk_put)
+ clk_functions.clk_put(clk);
+}
+EXPORT_SYMBOL(clk_put);
+
+int clk_enable(struct clk *clk)
+{
+ if (clk_functions.clk_enable)
+ return clk_functions.clk_enable(clk);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+ if (clk_functions.clk_disable)
+ clk_functions.clk_disable(clk);
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ if (clk_functions.clk_get_rate)
+ return clk_functions.clk_get_rate(clk);
+ return 0;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk_functions.clk_round_rate)
+ return clk_functions.clk_round_rate(clk, rate);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_round_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk_functions.clk_set_rate)
+ return clk_functions.clk_set_rate(clk, rate);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_set_rate);
+
+struct clk *clk_get_parent(struct clk *clk)
+{
+ if (clk_functions.clk_get_parent)
+ return clk_functions.clk_get_parent(clk);
+ return ERR_PTR(-ENOSYS);
+}
+EXPORT_SYMBOL(clk_get_parent);
+
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ if (clk_functions.clk_set_parent)
+ return clk_functions.clk_set_parent(clk, parent);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_set_parent);