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 31 extern int platform_irqchip_probe(struct platform_device *pdev); 32 33 #define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \ 34 static 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 }; \ 41 MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table); \ 42 static 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 }; \ 51 builtin_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 71 void irqchip_init(void); 72 #else 73 static inline void irqchip_init(void) {} 74 #endif 75 76 #endif 77