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kernel/linux-rt-4.4.41/include/linux/irqchip.h 1.54 KB
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  /*
   * Copyright (C) 2012 Thomas Petazzoni
   *
   * Thomas Petazzoni <thomas.petazzoni@free-electrons.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 _LINUX_IRQCHIP_H
  #define _LINUX_IRQCHIP_H
  
  #include <linux/acpi.h>
  #include <linux/of.h>
  
  /*
   * This macro must be used by the different irqchip drivers to declare
   * the association between their DT compatible string and their
   * initialization function.
   *
   * @name: name that must be unique accross all IRQCHIP_DECLARE of the
   * same file.
   * @compstr: compatible string of the irqchip driver
   * @fn: initialization function
   */
  #define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
  
  /*
   * This macro must be used by the different irqchip drivers to declare
   * the association between their version and their initialization function.
   *
   * @name: name that must be unique accross all IRQCHIP_ACPI_DECLARE of the
   * same file.
   * @subtable: Subtable to be identified in MADT
   * @validate: Function to be called on that subtable to check its validity.
   *            Can be NULL.
   * @data: data to be checked by the validate function.
   * @fn: initialization function
   */
  #define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn)	\
  	ACPI_DECLARE_PROBE_ENTRY(irqchip, name, ACPI_SIG_MADT, 		\
  				 subtable, validate, data, fn)
  
  #ifdef CONFIG_IRQCHIP
  void irqchip_init(void);
  #else
  static inline void irqchip_init(void) {}
  #endif
  
  #endif