drivers/clk/mxs/clk.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright 2012 Freescale Semiconductor, Inc.
   4  */
   5
   6 #ifndef __MXS_CLK_H
   7 #define __MXS_CLK_H
   8
   9 struct clk;
  10
  11 #include <linux/clk-provider.h>
  12 #include <linux/spinlock.h>
  13
  14 #define SET     0x4
  15 #define CLR     0x8
  16
  17 extern spinlock_t mxs_lock;
  18
  19 int mxs_clk_wait(void __iomem *reg, u8 shift);
  20
  21 struct clk *mxs_clk_pll(const char *name, const char *parent_name,
  22                         void __iomem *base, u8 power, unsigned long rate);
  23
  24 struct clk *mxs_clk_ref(const char *name, const char *parent_name,
  25                         void __iomem *reg, u8 idx);
  26
  27 struct clk *mxs_clk_div(const char *name, const char *parent_name,
  28                         void __iomem *reg, u8 shift, u8 width, u8 busy);
  29
  30 struct clk *mxs_clk_frac(const char *name, const char *parent_name,
  31                          void __iomem *reg, u8 shift, u8 width, u8 busy);
  32
  33 static inline struct clk *mxs_clk_fixed(const char *name, int rate)
  34 {
  35         return clk_register_fixed_rate(NULL, name, NULL, 0, rate);
  36 }
  37
  38 static inline struct clk *mxs_clk_gate(const char *name,
  39                         const char *parent_name, void __iomem *reg, u8 shift)
  40 {
  41         return clk_register_gate(NULL, name, parent_name, CLK_SET_RATE_PARENT,
  42                                  reg, shift, CLK_GATE_SET_TO_DISABLE,
  43                                  &mxs_lock);
  44 }
  45
  46 static inline struct clk *mxs_clk_mux(const char *name, void __iomem *reg,
  47                 u8 shift, u8 width, const char *const *parent_names, int num_parents)
  48 {
  49         return clk_register_mux(NULL, name, parent_names, num_parents,
  50                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
  51                                 reg, shift, width, 0, &mxs_lock);
  52 }
  53
  54 static inline struct clk *mxs_clk_fixed_factor(const char *name,
  55                 const char *parent_name, unsigned int mult, unsigned int div)
  56 {
  57         return clk_register_fixed_factor(NULL, name, parent_name,
  58                                          CLK_SET_RATE_PARENT, mult, div);
  59 }
  60
  61 #endif /* __MXS_CLK_H */