Release 4.7 drivers/clk/qcom/reset.c
/*
* 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;
}
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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);
}
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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);
}
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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);
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