drivers/clk/clk.h

   1 /*
   2  * linux/drivers/clk/clk.h
   3  *
   4  * Copyright (C) 2013 Samsung Electronics Co., Ltd.
   5  * Sylwester Nawrocki <s.nawrocki@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 struct clk_hw;
  13
  14 #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
  15 struct clk *of_clk_get_by_clkspec(struct of_phandle_args *clkspec);
  16 struct clk *__of_clk_get_from_provider(struct of_phandle_args *clkspec,
  17                                        const char *dev_id, const char *con_id);
  18 void of_clk_lock(void);
  19 void of_clk_unlock(void);
  20 #endif
  21
  22 #ifdef CONFIG_COMMON_CLK
  23 struct clk *__clk_create_clk(struct clk_hw *hw, const char *dev_id,
  24                              const char *con_id);
  25 void __clk_free_clk(struct clk *clk);
  26 #else
  27 /* All these casts to avoid ifdefs in clkdev... */
  28 static inline struct clk *
  29 __clk_create_clk(struct clk_hw *hw, const char *dev_id, const char *con_id)
  30 {
  31         return (struct clk *)hw;
  32 }
  33 static inline void __clk_free_clk(struct clk *clk) { }
  34 static struct clk_hw *__clk_get_hw(struct clk *clk)
  35 {
  36         return (struct clk_hw *)clk;
  37 }
  38
  39 #endif