drivers/clk/actions/owl-gate.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // OWL gate clock driver
   4 //
   5 // Copyright (c) 2014 Actions Semi Inc.
   6 // Author: David Liu <liuwei@actions-semi.com>
   7 //
   8 // Copyright (c) 2018 Linaro Ltd.
   9 // Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
  10
  11 #ifndef _OWL_GATE_H_
  12 #define _OWL_GATE_H_
  13
  14 #include "owl-common.h"
  15
  16 struct owl_gate_hw {
  17         u32                     reg;
  18         u8                      bit_idx;
  19         u8                      gate_flags;
  20 };
  21
  22 struct owl_gate {
  23         struct owl_gate_hw      gate_hw;
  24         struct owl_clk_common   common;
  25 };
  26
  27 #define OWL_GATE_HW(_reg, _bit_idx, _gate_flags)        \
  28         {                                               \
  29                 .reg            = _reg,                 \
  30                 .bit_idx        = _bit_idx,             \
  31                 .gate_flags     = _gate_flags,          \
  32         }
  33
  34 #define OWL_GATE(_struct, _name, _parent, _reg,                         \
  35                 _bit_idx, _gate_flags, _flags)                          \
  36         struct owl_gate _struct = {                                     \
  37                 .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags),    \
  38                 .common = {                                             \
  39                         .regmap         = NULL,                         \
  40                         .hw.init        = CLK_HW_INIT(_name,            \
  41                                                       _parent,          \
  42                                                       &owl_gate_ops,    \
  43                                                       _flags),          \
  44                 }                                                       \
  45         }                                                               \
  46
  47 #define OWL_GATE_NO_PARENT(_struct, _name, _reg,                        \
  48                 _bit_idx, _gate_flags, _flags)                          \
  49         struct owl_gate _struct = {                                     \
  50                 .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags),    \
  51                 .common = {                                             \
  52                         .regmap         = NULL,                         \
  53                         .hw.init        = CLK_HW_INIT_NO_PARENT(_name,  \
  54                                                       &owl_gate_ops,    \
  55                                                       _flags),          \
  56                 },                                                      \
  57         }                                                               \
  58
  59 static inline struct owl_gate *hw_to_owl_gate(const struct clk_hw *hw)
  60 {
  61         struct owl_clk_common *common = hw_to_owl_clk_common(hw);
  62
  63         return container_of(common, struct owl_gate, common);
  64 }
  65
  66 void owl_gate_set(const struct owl_clk_common *common,
  67                  const struct owl_gate_hw *gate_hw, bool enable);
  68 int owl_gate_clk_is_enabled(const struct owl_clk_common *common,
  69                    const struct owl_gate_hw *gate_hw);
  70
  71 extern const struct clk_ops owl_gate_ops;
  72
  73 #endif /* _OWL_GATE_H_ */