LXR linux/drivers/clk/uniphier/clk-uniphier-fixed-rate.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_rate(struct device *dev,
  22                                                const char *name,
  23                                const struct uniphier_clk_fixed_rate_data *data)
  24{
  25        struct clk_fixed_rate *fixed;
  26        struct clk_init_data init;
  27        int ret;
  28
  29        /* allocate fixed-rate clock */
  30        fixed = devm_kzalloc(dev, sizeof(*fixed), GFP_KERNEL);
  31        if (!fixed)
  32                return ERR_PTR(-ENOMEM);
  33
  34        init.name = name;
  35        init.ops = &clk_fixed_rate_ops;
  36        init.parent_names = NULL;
  37        init.num_parents = 0;
  38
  39        fixed->fixed_rate = data->fixed_rate;
  40        fixed->hw.init = &init;
  41
  42        ret = devm_clk_hw_register(dev, &fixed->hw);
  43        if (ret)
  44                return ERR_PTR(ret);
  45
  46        return &fixed->hw;
  47}
  48