include/linux/clkdev.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  include/linux/clkdev.h
   4  *
   5  *  Copyright (C) 2008 Russell King.
   6  *
   7  * Helper for the clk API to assist looking up a struct clk.
   8  */
   9 #ifndef __CLKDEV_H
  10 #define __CLKDEV_H
  11
  12 #include <linux/slab.h>
  13
  14 struct clk;
  15 struct clk_hw;
  16 struct device;
  17
  18 struct clk_lookup {
  19         struct list_head        node;
  20         const char              *dev_id;
  21         const char              *con_id;
  22         struct clk              *clk;
  23         struct clk_hw           *clk_hw;
  24 };
  25
  26 #define CLKDEV_INIT(d, n, c)    \
  27         {                       \
  28                 .dev_id = d,    \
  29                 .con_id = n,    \
  30                 .clk = c,       \
  31         }
  32
  33 struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
  34         const char *dev_fmt, ...) __printf(3, 4);
  35 struct clk_lookup *clkdev_hw_alloc(struct clk_hw *hw, const char *con_id,
  36         const char *dev_fmt, ...) __printf(3, 4);
  37
  38 void clkdev_add(struct clk_lookup *cl);
  39 void clkdev_drop(struct clk_lookup *cl);
  40
  41 struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
  42         const char *dev_fmt, ...) __printf(3, 4);
  43 struct clk_lookup *clkdev_hw_create(struct clk_hw *hw, const char *con_id,
  44         const char *dev_fmt, ...) __printf(3, 4);
  45
  46 void clkdev_add_table(struct clk_lookup *, size_t);
  47 int clk_add_alias(const char *, const char *, const char *, struct device *);
  48
  49 int clk_register_clkdev(struct clk *, const char *, const char *);
  50 int clk_hw_register_clkdev(struct clk_hw *, const char *, const char *);
  51
  52 int devm_clk_hw_register_clkdev(struct device *dev, struct clk_hw *hw,
  53                                 const char *con_id, const char *dev_id);
  54 void devm_clk_release_clkdev(struct device *dev, const char *con_id,
  55                              const char *dev_id);
  56 #endif