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OpenCloudOS-Kernel/include/linux/of_clk.h

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clk: Extract OF clock helpers in <linux/of_clk.h> The use of of_clk_get_parent_{count,name}() and of_clk_init() is not limited to clock providers. Hence move these helpers into their own header file, so callers that are not clock providers no longer have to include <linux/clk-provider.h>. Suggested-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-04-18 22:50:01 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* OF clock helpers
*/
#ifndef __LINUX_OF_CLK_H
#define __LINUX_OF_CLK_H
of: clk: Make <linux/of_clk.h> self-contained Depending on include order: include/linux/of_clk.h:11:45: warning: ‘struct device_node’ declared inside parameter list will not be visible outside of this definition or declaration unsigned int of_clk_get_parent_count(struct device_node *np); ^~~~~~~~~~~ include/linux/of_clk.h:12:43: warning: ‘struct device_node’ declared inside parameter list will not be visible outside of this definition or declaration const char *of_clk_get_parent_name(struct device_node *np, int index); ^~~~~~~~~~~ include/linux/of_clk.h:13:31: warning: ‘struct of_device_id’ declared inside parameter list will not be visible outside of this definition or declaration void of_clk_init(const struct of_device_id *matches); ^~~~~~~~~~~~ Fix this by adding forward declarations for struct device_node and struct of_device_id. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lkml.kernel.org/r/20200205194649.31309-1-geert+renesas@glider.be Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-02-06 03:46:49 +08:00
struct device_node;
struct of_device_id;
clk: Extract OF clock helpers in <linux/of_clk.h> The use of of_clk_get_parent_{count,name}() and of_clk_init() is not limited to clock providers. Hence move these helpers into their own header file, so callers that are not clock providers no longer have to include <linux/clk-provider.h>. Suggested-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-04-18 22:50:01 +08:00
#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_OF)
of: clk: Make of_clk_get_parent_{count,name}() parameter const of_clk_get_parent_count() and of_clk_get_parent_name() never modify the device nodes passed, so they can be const. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lkml.kernel.org/r/20200212094317.1150-1-geert+renesas@glider.be Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-02-12 17:43:17 +08:00
unsigned int of_clk_get_parent_count(const struct device_node *np);
const char *of_clk_get_parent_name(const struct device_node *np, int index);
clk: Extract OF clock helpers in <linux/of_clk.h> The use of of_clk_get_parent_{count,name}() and of_clk_init() is not limited to clock providers. Hence move these helpers into their own header file, so callers that are not clock providers no longer have to include <linux/clk-provider.h>. Suggested-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-04-18 22:50:01 +08:00
void of_clk_init(const struct of_device_id *matches);
#else /* !CONFIG_COMMON_CLK || !CONFIG_OF */
of: clk: Make of_clk_get_parent_{count,name}() parameter const of_clk_get_parent_count() and of_clk_get_parent_name() never modify the device nodes passed, so they can be const. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lkml.kernel.org/r/20200212094317.1150-1-geert+renesas@glider.be Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-02-12 17:43:17 +08:00
static inline unsigned int of_clk_get_parent_count(const struct device_node *np)
clk: Extract OF clock helpers in <linux/of_clk.h> The use of of_clk_get_parent_{count,name}() and of_clk_init() is not limited to clock providers. Hence move these helpers into their own header file, so callers that are not clock providers no longer have to include <linux/clk-provider.h>. Suggested-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-04-18 22:50:01 +08:00
{
return 0;
}
of: clk: Make of_clk_get_parent_{count,name}() parameter const of_clk_get_parent_count() and of_clk_get_parent_name() never modify the device nodes passed, so they can be const. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lkml.kernel.org/r/20200212094317.1150-1-geert+renesas@glider.be Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-02-12 17:43:17 +08:00
static inline const char *of_clk_get_parent_name(const struct device_node *np,
clk: Extract OF clock helpers in <linux/of_clk.h> The use of of_clk_get_parent_{count,name}() and of_clk_init() is not limited to clock providers. Hence move these helpers into their own header file, so callers that are not clock providers no longer have to include <linux/clk-provider.h>. Suggested-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-04-18 22:50:01 +08:00
int index)
{
return NULL;
}
static inline void of_clk_init(const struct of_device_id *matches) {}
#endif /* !CONFIG_COMMON_CLK || !CONFIG_OF */
#endif /* __LINUX_OF_CLK_H */