/*
   * Copyright (c) 2013, The Linux Foundation. All rights reserved.
   *
   * This software is licensed under the terms of the GNU General Public
   * License version 2, as published by the Free Software Foundation, and
   * may be copied, distributed, and modified under those terms.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  #include <linux/bitops.h>
  #include <linux/export.h>
  #include <linux/regmap.h>
  #include <linux/reset-controller.h>
  #include <linux/delay.h>
  
  #include "reset.h"
  
  static int qcom_reset(struct reset_controller_dev *rcdev, unsigned long id)
  {
  	rcdev->ops->assert(rcdev, id);
  	udelay(1);
  	rcdev->ops->deassert(rcdev, id);
  	return 0;
  }
  
  static int
  qcom_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
  {
  	struct qcom_reset_controller *rst;
  	const struct qcom_reset_map *map;
  	u32 mask;
  
  	rst = to_qcom_reset_controller(rcdev);
  	map = &rst->reset_map[id];
  	mask = BIT(map->bit);
  
  	return regmap_update_bits(rst->regmap, map->reg, mask, mask);
  }
  
  static int
  qcom_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
  {
  	struct qcom_reset_controller *rst;
  	const struct qcom_reset_map *map;
  	u32 mask;
  
  	rst = to_qcom_reset_controller(rcdev);
  	map = &rst->reset_map[id];
  	mask = BIT(map->bit);
  
  	return regmap_update_bits(rst->regmap, map->reg, mask, 0);
  }
  
  const struct reset_control_ops qcom_reset_ops = {
  	.reset = qcom_reset,
  	.assert = qcom_reset_assert,
  	.deassert = qcom_reset_deassert,
  };
  EXPORT_SYMBOL_GPL(qcom_reset_ops);