Merge tag 'cleanup-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git...

[firefly-linux-kernel-4.4.55.git] / drivers / clk / clk-fixed-factor.c

diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index 1ef271e47594a318b04f5860ac03244e969df5aa..9ff7d510faa35e7fcb5ed37e0982b5d4b3735d1e 100644 (file)
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -11,6 +11,7 @@
 #include <linux/clk-provider.h>
 #include <linux/slab.h>
 #include <linux/err.h>
+#include <linux/of.h>
 
 /*
  * DOC: basic fixed multiplier and divider clock that cannot gate
@@ -96,3 +97,38 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
 
        return clk;
 }
+#ifdef CONFIG_OF
+/**
+ * of_fixed_factor_clk_setup() - Setup function for simple fixed factor clock
+ */
+void __init of_fixed_factor_clk_setup(struct device_node *node)
+{
+       struct clk *clk;
+       const char *clk_name = node->name;
+       const char *parent_name;
+       u32 div, mult;
+
+       if (of_property_read_u32(node, "clock-div", &div)) {
+               pr_err("%s Fixed factor clock <%s> must have a clock-div property\n",
+                       __func__, node->name);
+               return;
+       }
+
+       if (of_property_read_u32(node, "clock-mult", &mult)) {
+               pr_err("%s Fixed factor clock <%s> must have a clokc-mult property\n",
+                       __func__, node->name);
+               return;
+       }
+
+       of_property_read_string(node, "clock-output-names", &clk_name);
+       parent_name = of_clk_get_parent_name(node, 0);
+
+       clk = clk_register_fixed_factor(NULL, clk_name, parent_name, 0,
+                                       mult, div);
+       if (!IS_ERR(clk))
+               of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+EXPORT_SYMBOL_GPL(of_fixed_factor_clk_setup);
+CLK_OF_DECLARE(fixed_factor_clk, "fixed-factor-clock",
+               of_fixed_factor_clk_setup);
+#endif