drivers/clk/sprd/composite.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Spreadtrum composite clock driver
   4 //
   5 // Copyright (C) 2017 Spreadtrum, Inc.
   6 // Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
   7
   8 #include <linux/clk-provider.h>
   9
  10 #include "composite.h"
  11
  12 static long sprd_comp_round_rate(struct clk_hw *hw, unsigned long rate,
  13                                 unsigned long *parent_rate)
  14 {
  15         struct sprd_comp *cc = hw_to_sprd_comp(hw);
  16
  17         return sprd_div_helper_round_rate(&cc->common, &cc->div,
  18                                          rate, parent_rate);
  19 }
  20
  21 static unsigned long sprd_comp_recalc_rate(struct clk_hw *hw,
  22                                           unsigned long parent_rate)
  23 {
  24         struct sprd_comp *cc = hw_to_sprd_comp(hw);
  25
  26         return sprd_div_helper_recalc_rate(&cc->common, &cc->div, parent_rate);
  27 }
  28
  29 static int sprd_comp_set_rate(struct clk_hw *hw, unsigned long rate,
  30                              unsigned long parent_rate)
  31 {
  32         struct sprd_comp *cc = hw_to_sprd_comp(hw);
  33
  34         return sprd_div_helper_set_rate(&cc->common, &cc->div,
  35                                        rate, parent_rate);
  36 }
  37
  38 static u8 sprd_comp_get_parent(struct clk_hw *hw)
  39 {
  40         struct sprd_comp *cc = hw_to_sprd_comp(hw);
  41
  42         return sprd_mux_helper_get_parent(&cc->common, &cc->mux);
  43 }
  44
  45 static int sprd_comp_set_parent(struct clk_hw *hw, u8 index)
  46 {
  47         struct sprd_comp *cc = hw_to_sprd_comp(hw);
  48
  49         return sprd_mux_helper_set_parent(&cc->common, &cc->mux, index);
  50 }
  51
  52 const struct clk_ops sprd_comp_ops = {
  53         .get_parent     = sprd_comp_get_parent,
  54         .set_parent     = sprd_comp_set_parent,
  55
  56         .round_rate     = sprd_comp_round_rate,
  57         .recalc_rate    = sprd_comp_recalc_rate,
  58         .set_rate       = sprd_comp_set_rate,
  59 };
  60 EXPORT_SYMBOL_GPL(sprd_comp_ops);