drivers/clk/sunxi-ng/ccu_nkm.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_NKM_H_
  15 #define _CCU_NKM_H_
  16
  17 #include <linux/clk-provider.h>
  18
  19 #include "ccu_common.h"
  20 #include "ccu_div.h"
  21 #include "ccu_mult.h"
  22
  23 /*
  24  * struct ccu_nkm - Definition of an N-K-M clock
  25  *
  26  * Clocks based on the formula parent * N * K / M
  27  */
  28 struct ccu_nkm {
  29         u32                     enable;
  30         u32                     lock;
  31
  32         struct ccu_mult_internal        n;
  33         struct ccu_mult_internal        k;
  34         struct ccu_div_internal         m;
  35         struct ccu_mux_internal mux;
  36
  37         unsigned int            fixed_post_div;
  38
  39         struct ccu_common       common;
  40 };
  41
  42 #define SUNXI_CCU_NKM_WITH_MUX_GATE_LOCK(_struct, _name, _parents, _reg, \
  43                                          _nshift, _nwidth,              \
  44                                          _kshift, _kwidth,              \
  45                                          _mshift, _mwidth,              \
  46                                          _muxshift, _muxwidth,          \
  47                                          _gate, _lock, _flags)          \
  48         struct ccu_nkm _struct = {                                      \
  49                 .enable         = _gate,                                \
  50                 .lock           = _lock,                                \
  51                 .k              = _SUNXI_CCU_MULT(_kshift, _kwidth),    \
  52                 .n              = _SUNXI_CCU_MULT(_nshift, _nwidth),    \
  53                 .m              = _SUNXI_CCU_DIV(_mshift, _mwidth),     \
  54                 .mux            = _SUNXI_CCU_MUX(_muxshift, _muxwidth), \
  55                 .common         = {                                     \
  56                         .reg            = _reg,                         \
  57                         .hw.init        = CLK_HW_INIT_PARENTS(_name,    \
  58                                                       _parents,         \
  59                                                       &ccu_nkm_ops,     \
  60                                                       _flags),          \
  61                 },                                                      \
  62         }
  63
  64 #define SUNXI_CCU_NKM_WITH_GATE_LOCK(_struct, _name, _parent, _reg,     \
  65                                      _nshift, _nwidth,                  \
  66                                      _kshift, _kwidth,                  \
  67                                      _mshift, _mwidth,                  \
  68                                      _gate, _lock, _flags)              \
  69         struct ccu_nkm _struct = {                                      \
  70                 .enable         = _gate,                                \
  71                 .lock           = _lock,                                \
  72                 .k              = _SUNXI_CCU_MULT(_kshift, _kwidth),    \
  73                 .n              = _SUNXI_CCU_MULT(_nshift, _nwidth),    \
  74                 .m              = _SUNXI_CCU_DIV(_mshift, _mwidth),     \
  75                 .common         = {                                     \
  76                         .reg            = _reg,                         \
  77                         .hw.init        = CLK_HW_INIT(_name,            \
  78                                                       _parent,          \
  79                                                       &ccu_nkm_ops,     \
  80                                                       _flags),          \
  81                 },                                                      \
  82         }
  83
  84 static inline struct ccu_nkm *hw_to_ccu_nkm(struct clk_hw *hw)
  85 {
  86         struct ccu_common *common = hw_to_ccu_common(hw);
  87
  88         return container_of(common, struct ccu_nkm, common);
  89 }
  90
  91 extern const struct clk_ops ccu_nkm_ops;
  92
  93 #endif /* _CCU_NKM_H_ */