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irqchip / ACPI: Add probing infrastructure for ACPI-based irqchips

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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 <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Reviewed-by: Hanjun Guo <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Tested-by: Hanjun Guo <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Marc Zyngier 2015-09-28 15:49:13 +01:00 • committed by Rafael J. Wysocki
commit 46e589a391
5 changed files with 23 additions and 24 deletions
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8
drivers/irqchip/irqchip.c
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@ -8,7 +8,7 @@
* warranty of any kind, whether express or implied.
*/
#include <linux/acpi_irq.h>
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/of_irq.h>
#include <linux/irqchip.h>
@ -27,6 +27,8 @@ extern struct of_device_id __irqchip_of_table[];
void __init irqchip_init(void)
{
of_irq_init(__irqchip_of_table);
acpi_irq_init();
#if defined(CONFIG_ARM64) && defined(CONFIG_ACPI)
acpi_gic_init(); /* Temporary hack */
#endif
acpi_probe_device_table(irqchip);
}