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/*
* SPEAr platform shared irq layer header file
*
* Copyright (C) 2009-2012 ST Microelectronics
* Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __SPEAR_SHIRQ_H
#define __SPEAR_SHIRQ_H
#include <linux/irq.h>
#include <linux/types.h>
/*
* struct shirq_regs: shared irq register configuration
*
* enb_reg: enable register offset
* reset_to_enb: val 1 indicates, we need to clear bit for enabling interrupt
* status_reg: status register offset
* status_reg_mask: status register valid mask
* clear_reg: clear register offset
* reset_to_clear: val 1 indicates, we need to clear bit for clearing interrupt
*/
struct shirq_regs {
u32 enb_reg;
u32 reset_to_enb;
u32 status_reg;
u32 clear_reg;
u32 reset_to_clear;
};
/*
* struct spear_shirq: shared irq structure
*
* irq: hardware irq number
* irq_base: base irq in linux domain
* irq_nr: no. of shared interrupts in a particular block
* irq_bit_off: starting bit offset in the status register
* invalid_irq: irq group is currently disabled
* base: base address of shared irq register
* regs: register configuration for shared irq block
*/
struct spear_shirq {
u32 irq;
u32 irq_base;
u32 irq_nr;
u32 irq_bit_off;
int invalid_irq;
void __iomem *base;
struct shirq_regs regs;
};
int __init spear300_shirq_of_init(struct device_node *np,
struct device_node *parent);
int __init spear310_shirq_of_init(struct device_node *np,
struct device_node *parent);
int __init spear320_shirq_of_init(struct device_node *np,
struct device_node *parent);
#endif /* __SPEAR_SHIRQ_H */