forked from mirrors/linux
46e589a391
DT enjoys a rather nice probing infrastructure for irqchips, while ACPI is so far stuck into a very distant past. This patch introduces a declarative API, allowing irqchips to be self-contained and be called when a particular entry is matched in the MADT table. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/*
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* Copyright (C) 2012 Thomas Petazzoni
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*
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* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef _LINUX_IRQCHIP_H
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#define _LINUX_IRQCHIP_H
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#include <linux/acpi.h>
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#include <linux/of.h>
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/*
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* This macro must be used by the different irqchip drivers to declare
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* the association between their DT compatible string and their
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* initialization function.
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*
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* @name: name that must be unique accross all IRQCHIP_DECLARE of the
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* same file.
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* @compstr: compatible string of the irqchip driver
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* @fn: initialization function
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*/
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#define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
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/*
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* This macro must be used by the different irqchip drivers to declare
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* the association between their version and their initialization function.
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*
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* @name: name that must be unique accross all IRQCHIP_ACPI_DECLARE of the
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* same file.
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* @subtable: Subtable to be identified in MADT
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* @validate: Function to be called on that subtable to check its validity.
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* Can be NULL.
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* @data: data to be checked by the validate function.
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* @fn: initialization function
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*/
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#define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn) \
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ACPI_DECLARE_PROBE_ENTRY(irqchip, name, ACPI_SIG_MADT, \
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subtable, validate, data, fn)
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#ifdef CONFIG_IRQCHIP
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void irqchip_init(void);
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#else
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static inline void irqchip_init(void) {}
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#endif
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#endif
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