/* * 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);