drivers/clk/sunxi-ng/ccu_div.h

   1 /*
   2  * Copyright (c) 2016 Maxime Ripard. All rights reserved.
   3  *
   4  * This software is licensed under the terms of the GNU General Public
   5  * License version 2, as published by the Free Software Foundation, and
   6  * may be copied, distributed, and modified under those terms.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef _CCU_DIV_H_
  15 #define _CCU_DIV_H_
  16
  17 #include <linux/clk-provider.h>
  18
  19 #include "ccu_common.h"
  20 #include "ccu_mux.h"
  21
  22 struct _ccu_div {
  23         u8                      shift;
  24         u8                      width;
  25
  26         u32                     flags;
  27
  28         struct clk_div_table    *table;
  29 };
  30
  31 #define _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, _table, _flags)      \
  32         {                                                               \
  33                 .shift  = _shift,                                       \
  34                 .width  = _width,                                       \
  35                 .flags  = _flags,                                       \
  36                 .table  = _table,                                       \
  37         }
  38
  39 #define _SUNXI_CCU_DIV_FLAGS(_shift, _width, _flags)                    \
  40         _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, NULL, _flags)
  41
  42 #define _SUNXI_CCU_DIV_TABLE(_shift, _width, _table)                    \
  43         _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, _table, 0)
  44
  45 #define _SUNXI_CCU_DIV(_shift, _width)                                  \
  46         _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, NULL, 0)
  47
  48 struct ccu_div {
  49         u32                     enable;
  50
  51         struct _ccu_div         div;
  52         struct ccu_mux_internal mux;
  53         struct ccu_common       common;
  54 };
  55
  56 #define SUNXI_CCU_DIV_TABLE_WITH_GATE(_struct, _name, _parent, _reg,    \
  57                                       _shift, _width,                   \
  58                                       _table, _gate, _flags)            \
  59         struct ccu_div _struct = {                                      \
  60                 .div            = _SUNXI_CCU_DIV_TABLE(_shift, _width,  \
  61                                                        _table),         \
  62                 .enable         = _gate,                                \
  63                 .common = {                                             \
  64                         .reg            = _reg,                         \
  65                         .hw.init        = CLK_HW_INIT(_name,            \
  66                                                       _parent,          \
  67                                                       &ccu_div_ops,     \
  68                                                       _flags),          \
  69                 }                                                       \
  70         }
  71
  72
  73 #define SUNXI_CCU_DIV_TABLE(_struct, _name, _parent, _reg,              \
  74                             _shift, _width,                             \
  75                             _table, _flags)                             \
  76         SUNXI_CCU_DIV_TABLE_WITH_GATE(_struct, _name, _parent, _reg,    \
  77                                       _shift, _width, _table, 0,        \
  78                                       _flags)
  79
  80 #define SUNXI_CCU_M_WITH_MUX_GATE(_struct, _name, _parents, _reg,       \
  81                                   _mshift, _mwidth, _muxshift, _muxwidth, \
  82                                   _gate, _flags)                        \
  83         struct ccu_div _struct = {                                      \
  84                 .enable = _gate,                                        \
  85                 .div    = _SUNXI_CCU_DIV(_mshift, _mwidth),             \
  86                 .mux    = SUNXI_CLK_MUX(_muxshift, _muxwidth),          \
  87                 .common = {                                             \
  88                         .reg            = _reg,                         \
  89                         .hw.init        = CLK_HW_INIT_PARENTS(_name,    \
  90                                                               _parents, \
  91                                                               &ccu_div_ops, \
  92                                                               _flags),  \
  93                 },                                                      \
  94         }
  95
  96 #define SUNXI_CCU_M_WITH_MUX(_struct, _name, _parents, _reg,            \
  97                              _mshift, _mwidth, _muxshift, _muxwidth,    \
  98                              _flags)                                    \
  99         SUNXI_CCU_M_WITH_MUX_GATE(_struct, _name, _parents, _reg,       \
 100                                   _mshift, _mwidth, _muxshift, _muxwidth, \
 101                                   0, _flags)
 102
 103
 104 #define SUNXI_CCU_M_WITH_GATE(_struct, _name, _parent, _reg,            \
 105                               _mshift, _mwidth, _gate,                  \
 106                               _flags)                                   \
 107         struct ccu_div _struct = {                                      \
 108                 .enable = _gate,                                        \
 109                 .div    = _SUNXI_CCU_DIV(_mshift, _mwidth),             \
 110                 .common = {                                             \
 111                         .reg            = _reg,                         \
 112                         .hw.init        = CLK_HW_INIT(_name,            \
 113                                                       _parent,          \
 114                                                       &ccu_div_ops,     \
 115                                                       _flags),          \
 116                 },                                                      \
 117         }
 118
 119 #define SUNXI_CCU_M(_struct, _name, _parent, _reg, _mshift, _mwidth,    \
 120                     _flags)                                             \
 121         SUNXI_CCU_M_WITH_GATE(_struct, _name, _parent, _reg,            \
 122                               _mshift, _mwidth, 0, _flags)
 123
 124 static inline struct ccu_div *hw_to_ccu_div(struct clk_hw *hw)
 125 {
 126         struct ccu_common *common = hw_to_ccu_common(hw);
 127
 128         return container_of(common, struct ccu_div, common);
 129 }
 130
 131 extern const struct clk_ops ccu_div_ops;
 132
 133 #endif /* _CCU_DIV_H_ */