drivers/clk/sunxi-ng/ccu_nm.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_NM_H_
  15 #define _CCU_NM_H_
  16
  17 #include <linux/clk-provider.h>
  18
  19 #include "ccu_common.h"
  20 #include "ccu_div.h"
  21 #include "ccu_frac.h"
  22 #include "ccu_mult.h"
  23
  24 /*
  25  * struct ccu_nm - Definition of an N-M clock
  26  *
  27  * Clocks based on the formula parent * N / M
  28  */
  29 struct ccu_nm {
  30         u32                     enable;
  31         u32                     lock;
  32
  33         struct ccu_mult_internal        n;
  34         struct ccu_div_internal         m;
  35         struct ccu_frac_internal        frac;
  36
  37         struct ccu_common       common;
  38 };
  39
  40 #define SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(_struct, _name, _parent, _reg, \
  41                                          _nshift, _nwidth,              \
  42                                          _mshift, _mwidth,              \
  43                                          _frac_en, _frac_sel,           \
  44                                          _frac_rate_0, _frac_rate_1,    \
  45                                          _gate, _lock, _flags)          \
  46         struct ccu_nm _struct = {                                       \
  47                 .enable         = _gate,                                \
  48                 .lock           = _lock,                                \
  49                 .n              = _SUNXI_CCU_MULT(_nshift, _nwidth),    \
  50                 .m              = _SUNXI_CCU_DIV(_mshift, _mwidth),     \
  51                 .frac           = _SUNXI_CCU_FRAC(_frac_en, _frac_sel,  \
  52                                                   _frac_rate_0,         \
  53                                                   _frac_rate_1),        \
  54                 .common         = {                                     \
  55                         .reg            = _reg,                         \
  56                         .features       = CCU_FEATURE_FRACTIONAL,       \
  57                         .hw.init        = CLK_HW_INIT(_name,            \
  58                                                       _parent,          \
  59                                                       &ccu_nm_ops,      \
  60                                                       _flags),          \
  61                 },                                                      \
  62         }
  63
  64 #define SUNXI_CCU_NM_WITH_GATE_LOCK(_struct, _name, _parent, _reg,      \
  65                                     _nshift, _nwidth,                   \
  66                                     _mshift, _mwidth,                   \
  67                                     _gate, _lock, _flags)               \
  68         struct ccu_nm _struct = {                                       \
  69                 .enable         = _gate,                                \
  70                 .lock           = _lock,                                \
  71                 .n              = _SUNXI_CCU_MULT(_nshift, _nwidth),    \
  72                 .m              = _SUNXI_CCU_DIV(_mshift, _mwidth),     \
  73                 .common         = {                                     \
  74                         .reg            = _reg,                         \
  75                         .hw.init        = CLK_HW_INIT(_name,            \
  76                                                       _parent,          \
  77                                                       &ccu_nm_ops,      \
  78                                                       _flags),          \
  79                 },                                                      \
  80         }
  81
  82 static inline struct ccu_nm *hw_to_ccu_nm(struct clk_hw *hw)
  83 {
  84         struct ccu_common *common = hw_to_ccu_common(hw);
  85
  86         return container_of(common, struct ccu_nm, common);
  87 }
  88
  89 extern const struct clk_ops ccu_nm_ops;
  90
  91 #endif /* _CCU_NM_H_ */