LXR linux/drivers/clk/uniphier/clk-uniphier-fixed-factor.c

   1/*
   2 * Copyright (C) 2016 Socionext Inc.
   3 *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
   4 *
   5 * This program is free software; you can redistribute it and/or modify
   6 * it under the terms of the GNU General Public License as published by
   7 * the Free Software Foundation; either version 2 of the License, or
   8 * (at your option) any later version.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 */
  15
  16#include <linux/clk-provider.h>
  17#include <linux/device.h>
  18
  19#include "clk-uniphier.h"
  20
  21struct clk_hw *uniphier_clk_register_fixed_factor(struct device *dev,
  22                                                  const char *name,
  23                        const struct uniphier_clk_fixed_factor_data *data)
  24{
  25        struct clk_fixed_factor *fix;
  26        struct clk_init_data init;
  27        int ret;
  28
  29        fix = devm_kzalloc(dev, sizeof(*fix), GFP_KERNEL);
  30        if (!fix)
  31                return ERR_PTR(-ENOMEM);
  32
  33        init.name = name;
  34        init.ops = &clk_fixed_factor_ops;
  35        init.flags = data->parent_name ? CLK_SET_RATE_PARENT : 0;
  36        init.parent_names = data->parent_name ? &data->parent_name : NULL;
  37        init.num_parents = data->parent_name ? 1 : 0;
  38
  39        fix->mult = data->mult;
  40        fix->div = data->div;
  41        fix->hw.init = &init;
  42
  43        ret = devm_clk_hw_register(dev, &fix->hw);
  44        if (ret)
  45                return ERR_PTR(ret);
  46
  47        return &fix->hw;
  48}
  49