/*
 * Copyright (C) 2010 Google, Inc.
 *
 * Author:
 *	Brian Swetland <swetland@google.com>
 *	Iliyan Malchev <malchev@google.com>
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/slab.h>

#include <asm/hardware/gic.h>

#include <mach/iomap.h>
#include <mach/fiq.h>
#include <mach/legacy_irq.h>

#include "board.h"

void tegra_fiq_enable(int irq)
{
	void __iomem *base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100);
	/* enable FIQ */
	u32 val = readl(base + GIC_CPU_CTRL);
	val &= ~8; /* pass FIQs through */
	val |= 2; /* enableNS */
	writel(val, base + GIC_CPU_CTRL);
	tegra_legacy_select_fiq(irq, true);
	tegra_legacy_unmask_irq(irq);
}

void tegra_fiq_disable(int irq)
{
	tegra_legacy_mask_irq(irq);
	tegra_legacy_select_fiq(irq, false);
}