include/linux/irqchip.h

   1 /*
   2  * Copyright (C) 2012 Thomas Petazzoni
   3  *
   4  * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10
  11 #ifndef _LINUX_IRQCHIP_H
  12 #define _LINUX_IRQCHIP_H
  13
  14 #include <linux/acpi.h>
  15 #include <linux/of.h>
  16
  17 /*
  18  * This macro must be used by the different irqchip drivers to declare
  19  * the association between their DT compatible string and their
  20  * initialization function.
  21  *
  22  * @name: name that must be unique accross all IRQCHIP_DECLARE of the
  23  * same file.
  24  * @compstr: compatible string of the irqchip driver
  25  * @fn: initialization function
  26  */
  27 #define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
  28
  29 /*
  30  * This macro must be used by the different irqchip drivers to declare
  31  * the association between their version and their initialization function.
  32  *
  33  * @name: name that must be unique accross all IRQCHIP_ACPI_DECLARE of the
  34  * same file.
  35  * @subtable: Subtable to be identified in MADT
  36  * @validate: Function to be called on that subtable to check its validity.
  37  *            Can be NULL.
  38  * @data: data to be checked by the validate function.
  39  * @fn: initialization function
  40  */
  41 #define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn)        \
  42         ACPI_DECLARE_PROBE_ENTRY(irqchip, name, ACPI_SIG_MADT,          \
  43                                  subtable, validate, data, fn)
  44
  45 #ifdef CONFIG_IRQCHIP
  46 void irqchip_init(void);
  47 #else
  48 static inline void irqchip_init(void) {}
  49 #endif
  50
  51 #endif