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| author | Marc Zyngier <Marc.Zyngier@arm.com> | 2015-09-28 15:49:13 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-01 02:18:38 +0200 |
| commit | 46e589a391809627144e6bee93d71d73fe915db2 (patch) | |
| tree | b9d3feafb1ebcf69e50263ea1d04d0673f8da1ac /include/linux/irqchip.h | |
| parent | e647b532275bb357e87272e052fccf5fcdb36a17 (diff) | |
| download | lwn-46e589a391809627144e6bee93d71d73fe915db2.tar.gz lwn-46e589a391809627144e6bee93d71d73fe915db2.zip | |
irqchip / ACPI: Add probing infrastructure for ACPI-based irqchips
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>
Diffstat (limited to 'include/linux/irqchip.h')
| -rw-r--r-- | include/linux/irqchip.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/irqchip.h b/include/linux/irqchip.h index 638887376e58..89c34b200671 100644 --- a/include/linux/irqchip.h +++ b/include/linux/irqchip.h @@ -11,6 +11,7 @@ #ifndef _LINUX_IRQCHIP_H #define _LINUX_IRQCHIP_H +#include <linux/acpi.h> #include <linux/of.h> /* @@ -25,6 +26,22 @@ */ #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 |