drivers/clk/mediatek/clk-mux.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (c) 2018 MediaTek Inc.
   4  * Author: Owen Chen <owen.chen@mediatek.com>
   5  */
   6
   7 #ifndef __DRV_CLK_MTK_MUX_H
   8 #define __DRV_CLK_MTK_MUX_H
   9
  10 #include <linux/clk-provider.h>
  11
  12 struct mtk_clk_mux {
  13         struct clk_hw hw;
  14         struct regmap *regmap;
  15         const struct mtk_mux *data;
  16         spinlock_t *lock;
  17 };
  18
  19 struct mtk_mux {
  20         int id;
  21         const char *name;
  22         const char * const *parent_names;
  23         unsigned int flags;
  24
  25         u32 mux_ofs;
  26         u32 set_ofs;
  27         u32 clr_ofs;
  28         u32 upd_ofs;
  29
  30         u8 mux_shift;
  31         u8 mux_width;
  32         u8 gate_shift;
  33         s8 upd_shift;
  34
  35         const struct clk_ops *ops;
  36
  37         signed char num_parents;
  38 };
  39
  40 extern const struct clk_ops mtk_mux_ops;
  41 extern const struct clk_ops mtk_mux_clr_set_upd_ops;
  42 extern const struct clk_ops mtk_mux_gate_ops;
  43 extern const struct clk_ops mtk_mux_gate_clr_set_upd_ops;
  44
  45 #define GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, _mux_ofs,          \
  46                         _mux_set_ofs, _mux_clr_ofs, _shift, _width,     \
  47                         _gate, _upd_ofs, _upd, _flags, _ops) {          \
  48                 .id = _id,                                              \
  49                 .name = _name,                                          \
  50                 .mux_ofs = _mux_ofs,                                    \
  51                 .set_ofs = _mux_set_ofs,                                \
  52                 .clr_ofs = _mux_clr_ofs,                                \
  53                 .upd_ofs = _upd_ofs,                                    \
  54                 .mux_shift = _shift,                                    \
  55                 .mux_width = _width,                                    \
  56                 .gate_shift = _gate,                                    \
  57                 .upd_shift = _upd,                                      \
  58                 .parent_names = _parents,                               \
  59                 .num_parents = ARRAY_SIZE(_parents),                    \
  60                 .flags = _flags,                                        \
  61                 .ops = &_ops,                                           \
  62         }
  63
  64 #define MUX_GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, _mux_ofs,      \
  65                         _mux_set_ofs, _mux_clr_ofs, _shift, _width,     \
  66                         _gate, _upd_ofs, _upd, _flags)                  \
  67                 GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents, _mux_ofs,  \
  68                         _mux_set_ofs, _mux_clr_ofs, _shift, _width,     \
  69                         _gate, _upd_ofs, _upd, _flags,                  \
  70                         mtk_mux_gate_clr_set_upd_ops)
  71
  72 #define MUX_GATE_CLR_SET_UPD(_id, _name, _parents, _mux_ofs,            \
  73                         _mux_set_ofs, _mux_clr_ofs, _shift, _width,     \
  74                         _gate, _upd_ofs, _upd)                          \
  75                 MUX_GATE_CLR_SET_UPD_FLAGS(_id, _name, _parents,        \
  76                         _mux_ofs, _mux_set_ofs, _mux_clr_ofs, _shift,   \
  77                         _width, _gate, _upd_ofs, _upd,                  \
  78                         CLK_SET_RATE_PARENT)
  79
  80 struct clk *mtk_clk_register_mux(const struct mtk_mux *mux,
  81                                  struct regmap *regmap,
  82                                  spinlock_t *lock);
  83
  84 int mtk_clk_register_muxes(const struct mtk_mux *muxes,
  85                            int num, struct device_node *node,
  86                            spinlock_t *lock,
  87                            struct clk_onecell_data *clk_data);
  88
  89 #endif /* __DRV_CLK_MTK_MUX_H */