LXR linux/drivers/clk/sunxi-ng/ccu

   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 */
  28struct 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
  84static 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
  91extern const struct clk_ops ccu_nkm_ops;
  92
  93#endif /* _CCU_NKM_H_ */
  94