drivers/clk/sunxi-ng/ccu_nk.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_NK_H_
  15 #define _CCU_NK_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_nk - Definition of an N-K clock
  25  *
  26  * Clocks based on the formula parent * N * K
  27  */
  28 struct ccu_nk {
  29         u16                     reg;
  30         u32                     enable;
  31         u32                     lock;
  32
  33         struct ccu_mult_internal        n;
  34         struct ccu_mult_internal        k;
  35
  36         unsigned int            fixed_post_div;
  37
  38         struct ccu_common       common;
  39 };
  40
  41 #define SUNXI_CCU_NK_WITH_GATE_LOCK_POSTDIV(_struct, _name, _parent, _reg, \
  42                                             _nshift, _nwidth,           \
  43                                             _kshift, _kwidth,           \
  44                                             _gate, _lock, _postdiv,     \
  45                                             _flags)                     \
  46         struct ccu_nk _struct = {                                       \
  47                 .enable         = _gate,                                \
  48                 .lock           = _lock,                                \
  49                 .k              = _SUNXI_CCU_MULT(_kshift, _kwidth),    \
  50                 .n              = _SUNXI_CCU_MULT(_nshift, _nwidth),    \
  51                 .fixed_post_div = _postdiv,                             \
  52                 .common         = {                                     \
  53                         .reg            = _reg,                         \
  54                         .features       = CCU_FEATURE_FIXED_POSTDIV,    \
  55                         .hw.init        = CLK_HW_INIT(_name,            \
  56                                                       _parent,          \
  57                                                       &ccu_nk_ops,      \
  58                                                       _flags),          \
  59                 },                                                      \
  60         }
  61
  62 static inline struct ccu_nk *hw_to_ccu_nk(struct clk_hw *hw)
  63 {
  64         struct ccu_common *common = hw_to_ccu_common(hw);
  65
  66         return container_of(common, struct ccu_nk, common);
  67 }
  68
  69 extern const struct clk_ops ccu_nk_ops;
  70
  71 #endif /* _CCU_NK_H_ */