LXR linux/drivers/clk/actions/owl-mux.h

   1// SPDX-License-Identifier: GPL-2.0+
   2//
   3// OWL mux 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_MUX_H_
  12#define _OWL_MUX_H_
  13
  14#include "owl-common.h"
  15
  16struct owl_mux_hw {
  17        u32                     reg;
  18        u8                      shift;
  19        u8                      width;
  20};
  21
  22struct owl_mux {
  23        struct owl_mux_hw       mux_hw;
  24        struct owl_clk_common   common;
  25};
  26
  27#define OWL_MUX_HW(_reg, _shift, _width)                \
  28        {                                               \
  29                .reg    = _reg,                         \
  30                .shift  = _shift,                       \
  31                .width  = _width,                       \
  32        }
  33
  34#define OWL_MUX(_struct, _name, _parents, _reg,                         \
  35                _shift, _width, _flags)                                 \
  36        struct owl_mux _struct = {                                      \
  37                .mux_hw = OWL_MUX_HW(_reg, _shift, _width),             \
  38                .common = {                                             \
  39                        .regmap = NULL,                                 \
  40                        .hw.init = CLK_HW_INIT_PARENTS(_name,           \
  41                                                       _parents,        \
  42                                                       &owl_mux_ops,    \
  43                                                       _flags),         \
  44                },                                                      \
  45        }
  46
  47static inline struct owl_mux *hw_to_owl_mux(const struct clk_hw *hw)
  48{
  49        struct owl_clk_common *common = hw_to_owl_clk_common(hw);
  50
  51        return container_of(common, struct owl_mux, common);
  52}
  53
  54u8 owl_mux_helper_get_parent(const struct owl_clk_common *common,
  55                             const struct owl_mux_hw *mux_hw);
  56int owl_mux_helper_set_parent(const struct owl_clk_common *common,
  57                              struct owl_mux_hw *mux_hw, u8 index);
  58
  59extern const struct clk_ops owl_mux_ops;
  60
  61#endif /* _OWL_MUX_H_ */
  62