drivers/clk/pistachio/clk.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2014 Google, Inc.
   4  */
   5
   6 #ifndef __PISTACHIO_CLK_H
   7 #define __PISTACHIO_CLK_H
   8
   9 #include <linux/clk-provider.h>
  10
  11 struct pistachio_gate {
  12         unsigned int id;
  13         unsigned long reg;
  14         unsigned int shift;
  15         const char *name;
  16         const char *parent;
  17 };
  18
  19 #define GATE(_id, _name, _pname, _reg, _shift)  \
  20         {                                       \
  21                 .id     = _id,                  \
  22                 .reg    = _reg,                 \
  23                 .shift  = _shift,               \
  24                 .name   = _name,                \
  25                 .parent = _pname,               \
  26         }
  27
  28 struct pistachio_mux {
  29         unsigned int id;
  30         unsigned long reg;
  31         unsigned int shift;
  32         unsigned int num_parents;
  33         const char *name;
  34         const char *const *parents;
  35 };
  36
  37 #define PNAME(x) static const char *const x[] __initconst
  38
  39 #define MUX(_id, _name, _pnames, _reg, _shift)                  \
  40         {                                                       \
  41                 .id             = _id,                          \
  42                 .reg            = _reg,                         \
  43                 .shift          = _shift,                       \
  44                 .name           = _name,                        \
  45                 .parents        = _pnames,                      \
  46                 .num_parents    = ARRAY_SIZE(_pnames)           \
  47         }
  48
  49
  50 struct pistachio_div {
  51         unsigned int id;
  52         unsigned long reg;
  53         unsigned int width;
  54         unsigned int div_flags;
  55         const char *name;
  56         const char *parent;
  57 };
  58
  59 #define DIV(_id, _name, _pname, _reg, _width)                   \
  60         {                                                       \
  61                 .id             = _id,                          \
  62                 .reg            = _reg,                         \
  63                 .width          = _width,                       \
  64                 .div_flags      = 0,                            \
  65                 .name           = _name,                        \
  66                 .parent         = _pname,                       \
  67         }
  68
  69 #define DIV_F(_id, _name, _pname, _reg, _width, _div_flags)     \
  70         {                                                       \
  71                 .id             = _id,                          \
  72                 .reg            = _reg,                         \
  73                 .width          = _width,                       \
  74                 .div_flags      = _div_flags,                   \
  75                 .name           = _name,                        \
  76                 .parent         = _pname,                       \
  77         }
  78
  79 struct pistachio_fixed_factor {
  80         unsigned int id;
  81         unsigned int div;
  82         const char *name;
  83         const char *parent;
  84 };
  85
  86 #define FIXED_FACTOR(_id, _name, _pname, _div)                  \
  87         {                                                       \
  88                 .id             = _id,                          \
  89                 .div            = _div,                         \
  90                 .name           = _name,                        \
  91                 .parent         = _pname,                       \
  92         }
  93
  94 struct pistachio_pll_rate_table {
  95         unsigned long long fref;
  96         unsigned long long fout;
  97         unsigned long long refdiv;
  98         unsigned long long fbdiv;
  99         unsigned long long postdiv1;
 100         unsigned long long postdiv2;
 101         unsigned long long frac;
 102 };
 103
 104 enum pistachio_pll_type {
 105         PLL_GF40LP_LAINT,
 106         PLL_GF40LP_FRAC,
 107 };
 108
 109 struct pistachio_pll {
 110         unsigned int id;
 111         unsigned long reg_base;
 112         enum pistachio_pll_type type;
 113         struct pistachio_pll_rate_table *rates;
 114         unsigned int nr_rates;
 115         const char *name;
 116         const char *parent;
 117 };
 118
 119 #define PLL(_id, _name, _pname, _type, _reg, _rates)            \
 120         {                                                       \
 121                 .id             = _id,                          \
 122                 .reg_base       = _reg,                         \
 123                 .type           = _type,                        \
 124                 .rates          = _rates,                       \
 125                 .nr_rates       = ARRAY_SIZE(_rates),           \
 126                 .name           = _name,                        \
 127                 .parent         = _pname,                       \
 128         }
 129
 130 #define PLL_FIXED(_id, _name, _pname, _type, _reg)              \
 131         {                                                       \
 132                 .id             = _id,                          \
 133                 .reg_base       = _reg,                         \
 134                 .type           = _type,                        \
 135                 .rates          = NULL,                         \
 136                 .nr_rates       = 0,                            \
 137                 .name           = _name,                        \
 138                 .parent         = _pname,                       \
 139         }
 140
 141 struct pistachio_clk_provider {
 142         struct device_node *node;
 143         void __iomem *base;
 144         struct clk_onecell_data clk_data;
 145 };
 146
 147 extern struct pistachio_clk_provider *
 148 pistachio_clk_alloc_provider(struct device_node *node, unsigned int num_clks);
 149 extern void pistachio_clk_register_provider(struct pistachio_clk_provider *p);
 150
 151 extern void pistachio_clk_register_gate(struct pistachio_clk_provider *p,
 152                                         struct pistachio_gate *gate,
 153                                         unsigned int num);
 154 extern void pistachio_clk_register_mux(struct pistachio_clk_provider *p,
 155                                        struct pistachio_mux *mux,
 156                                        unsigned int num);
 157 extern void pistachio_clk_register_div(struct pistachio_clk_provider *p,
 158                                        struct pistachio_div *div,
 159                                        unsigned int num);
 160 extern void
 161 pistachio_clk_register_fixed_factor(struct pistachio_clk_provider *p,
 162                                     struct pistachio_fixed_factor *ff,
 163                                     unsigned int num);
 164 extern void pistachio_clk_register_pll(struct pistachio_clk_provider *p,
 165                                        struct pistachio_pll *pll,
 166                                        unsigned int num);
 167
 168 extern void pistachio_clk_force_enable(struct pistachio_clk_provider *p,
 169                                        unsigned int *clk_ids, unsigned int num);
 170
 171 #endif