LXR linux/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/module.h>
  16#include <linux/of.h>
  17#include <linux/platform_device.h>
  18
  19/*
  20 * This macro must be used by the different irqchip drivers to declare
  21 * the association between their DT compatible string and their
  22 * initialization function.
  23 *
  24 * @name: name that must be unique across all IRQCHIP_DECLARE of the
  25 * same file.
  26 * @compstr: compatible string of the irqchip driver
  27 * @fn: initialization function
  28 */
  29#define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
  30
  31extern int platform_irqchip_probe(struct platform_device *pdev);
  32
  33#define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
  34static const struct of_device_id drv_name##_irqchip_match_table[] = {
  35
  36#define IRQCHIP_MATCH(compat, fn) { .compatible = compat, .data = fn },
  37
  38#define IRQCHIP_PLATFORM_DRIVER_END(drv_name)                           \
  39        {},                                                             \
  40};                                                                      \
  41MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table);                \
  42static struct platform_driver drv_name##_driver = {             \
  43        .probe  = platform_irqchip_probe,                               \
  44        .driver = {                                                     \
  45                .name = #drv_name,                                      \
  46                .owner = THIS_MODULE,                                   \
  47                .of_match_table = drv_name##_irqchip_match_table,       \
  48                .suppress_bind_attrs = true,                            \
  49        },                                                              \
  50};                                                                      \
  51builtin_platform_driver(drv_name##_driver)
  52
  53/*
  54 * This macro must be used by the different irqchip drivers to declare
  55 * the association between their version and their initialization function.
  56 *
  57 * @name: name that must be unique across all IRQCHIP_ACPI_DECLARE of the
  58 * same file.
  59 * @subtable: Subtable to be identified in MADT
  60 * @validate: Function to be called on that subtable to check its validity.
  61 *            Can be NULL.
  62 * @data: data to be checked by the validate function.
  63 * @fn: initialization function
  64 */
  65#define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn)        \
  66        ACPI_DECLARE_SUBTABLE_PROBE_ENTRY(irqchip, name,                \
  67                                          ACPI_SIG_MADT, subtable,      \
  68                                          validate, data, fn)
  69
  70#ifdef CONFIG_IRQCHIP
  71void irqchip_init(void);
  72#else
  73static inline void irqchip_init(void) {}
  74#endif
  75
  76#endif
  77