/* * Copyright (C) 2016 Maxime Ripard * Maxime Ripard <maxime.ripard@free-electrons.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. */ #include <linux/io.h> #include <linux/reset-controller.h> #include "ccu_reset.h" static int ccu_reset_assert(struct reset_controller_dev *rcdev, unsigned long id) { struct ccu_reset *ccu = rcdev_to_ccu_reset(rcdev); const struct ccu_reset_map *map = &ccu->reset_map[id]; unsigned long flags; u32 reg; spin_lock_irqsave(ccu->lock, flags); reg = readl(ccu->base + map->reg); writel(reg & ~map->bit, ccu->base + map->reg); spin_unlock_irqrestore(ccu->lock, flags); return 0; } static int ccu_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id) { struct ccu_reset *ccu = rcdev_to_ccu_reset(rcdev); const struct ccu_reset_map *map = &ccu->reset_map[id]; unsigned long flags; u32 reg; spin_lock_irqsave(ccu->lock, flags); reg = readl(ccu->base + map->reg); writel(reg | map->bit, ccu->base + map->reg); spin_unlock_irqrestore(ccu->lock, flags); return 0; } const struct reset_control_ops ccu_reset_ops = { .assert = ccu_reset_assert, .deassert = ccu_reset_deassert, };