LXR linux/include/linux/irqchip/spear-shirq.h

   1/*
   2 * SPEAr platform shared irq layer header file
   3 *
   4 * Copyright (C) 2009-2012 ST Microelectronics
   5 * Viresh Kumar <viresh.linux@gmail.com>
   6 *
   7 * This file is licensed under the terms of the GNU General Public
   8 * License version 2. This program is licensed "as is" without any
   9 * warranty of any kind, whether express or implied.
  10 */
  11
  12#ifndef __SPEAR_SHIRQ_H
  13#define __SPEAR_SHIRQ_H
  14
  15#include <linux/irq.h>
  16#include <linux/types.h>
  17
  18/*
  19 * struct shirq_regs: shared irq register configuration
  20 *
  21 * enb_reg: enable register offset
  22 * reset_to_enb: val 1 indicates, we need to clear bit for enabling interrupt
  23 * status_reg: status register offset
  24 * status_reg_mask: status register valid mask
  25 * clear_reg: clear register offset
  26 * reset_to_clear: val 1 indicates, we need to clear bit for clearing interrupt
  27 */
  28struct shirq_regs {
  29        u32 enb_reg;
  30        u32 reset_to_enb;
  31        u32 status_reg;
  32        u32 clear_reg;
  33        u32 reset_to_clear;
  34};
  35
  36/*
  37 * struct spear_shirq: shared irq structure
  38 *
  39 * irq: hardware irq number
  40 * irq_base: base irq in linux domain
  41 * irq_nr: no. of shared interrupts in a particular block
  42 * irq_bit_off: starting bit offset in the status register
  43 * invalid_irq: irq group is currently disabled
  44 * base: base address of shared irq register
  45 * regs: register configuration for shared irq block
  46 */
  47struct spear_shirq {
  48        u32 irq;
  49        u32 irq_base;
  50        u32 irq_nr;
  51        u32 irq_bit_off;
  52        int invalid_irq;
  53        void __iomem *base;
  54        struct shirq_regs regs;
  55};
  56
  57int __init spear300_shirq_of_init(struct device_node *np,
  58                struct device_node *parent);
  59int __init spear310_shirq_of_init(struct device_node *np,
  60                struct device_node *parent);
  61int __init spear320_shirq_of_init(struct device_node *np,
  62                struct device_node *parent);
  63
  64#endif /* __SPEAR_SHIRQ_H */
  65