The clock consumer, drivers/video/fbdev/simplefb.c, includes
<linux/clk-provider.h> just for calling of_clk_get_parent_count().
This is ugly.
Looking at simplefb_clocks_get(), of_clk_get_parent_count() seems
useful for clock consumers as well as for clock providers.
Unfortunately, we do not have a good home for declarations shared
between consumers and providers.
Create a new header <linux/__clk.h>, and move it over to it. This
header must be included via <linux/clk.h> or <linux/clk-provider.h>
(this is why it is prefixed with double-underscore). Add #error
so the build terminates if it is included directly.
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
drivers/video/fbdev/simplefb.c | 1 -
include/linux/__clk.h | 31 +++++++++++++++++++++++++++++++
include/linux/clk-provider.h | 7 ++-----
include/linux/clk.h | 2 ++
4 files changed, 35 insertions(+), 6 deletions(-)
create mode 100644 include/linux/__clk.h
diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c
index a3c44ec..17f0aec 100644
--- a/drivers/video/fbdev/simplefb.c
+++ b/drivers/video/fbdev/simplefb.c
@@ -27,7 +27,6 @@
#include <linux/platform_data/simplefb.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
-#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/parser.h>
diff --git a/include/linux/__clk.h b/include/linux/__clk.h
new file mode 100644
index 0000000..a8b86bf
--- /dev/null
+++ b/include/linux/__clk.h
@@ -0,0 +1,31 @@
+/*
+ * 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.
+ */
+
+#ifndef __LINUX___CLK_H
+#define __LINUX___CLK_H
+
+/* This header contains stuff shared between consumers and providers. */
+
+#if !defined(__LINUX_CLK_H) && !defined(__LINUX_CLK_PROVIDER_H)
+#error "Please don't include <linux/__clk.h> directly, include <linux/clk.h> or <linux/clk-provider.h> instead."
+#endif
+
+struct device_node;
+
+#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_OF)
+
+unsigned int of_clk_get_parent_count(struct device_node *np);
+
+#else
+
+static inline unsigned int of_clk_get_parent_count(struct device_node *np)
+{
+ return 0;
+}
+
+#endif
+
+#endif /* __LINUX___CLK_H */
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 5100ec1..cd9bca1 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -14,6 +14,8 @@
#include <linux/io.h>
#include <linux/of.h>
+#include "__clk.h"
+
#ifdef CONFIG_COMMON_CLK
/*
@@ -823,7 +825,6 @@ struct clk_hw *of_clk_hw_simple_get(struct of_phandle_args *clkspec,
struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data);
struct clk_hw *of_clk_hw_onecell_get(struct of_phandle_args *clkspec,
void *data);
-unsigned int of_clk_get_parent_count(struct device_node *np);
int of_clk_parent_fill(struct device_node *np, const char **parents,
unsigned int size);
const char *of_clk_get_parent_name(struct device_node *np, int index);
@@ -868,10 +869,6 @@ of_clk_hw_onecell_get(struct of_phandle_args *clkspec, void *data)
{
return ERR_PTR(-ENOENT);
}
-static inline unsigned int of_clk_get_parent_count(struct device_node *np)
-{
- return 0;
-}
static inline int of_clk_parent_fill(struct device_node *np,
const char **parents, unsigned int size)
{
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 12c96d9..83d24cb 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -16,6 +16,8 @@
#include <linux/kernel.h>
#include <linux/notifier.h>
+#include "__clk.h"
+
struct device;
struct clk;
struct device_node;
--
2.7.4
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