irqchip/gic-v2m: acpi: Introducing GICv2m ACPI support

This patch introduces gicv2m_acpi_init(), which uses information
in MADT GIC MSI frames structure to initialize GICv2m driver.
It also exposes gicv2m_init() function, which simplifies callers
to a single GICv2m init function.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Duc Dang <dhdang@apm.com>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index fcd327f49e8e..644e8bbe130c 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1234,7 +1234,7 @@ gic_of_init(struct device_node *node, struct device_node *parent)
         }
 
         if (IS_ENABLED(CONFIG_ARM_GIC_V2M))
-                gicv2m_of_init(node, gic_data[gic_cnt].domain);
+                gicv2m_init(&node->fwnode, gic_data[gic_cnt].domain);
 
         gic_cnt++;
         return 0;
@@ -1359,6 +1359,10 @@ static int __init gic_v2_acpi_init(struct acpi_subtable_header *header,
         __gic_init_bases(0, -1, dist_base, cpu_base, 0, domain_handle);
 
         acpi_set_irq_model(ACPI_IRQ_MODEL_GIC, domain_handle);
+
+        if (IS_ENABLED(CONFIG_ARM_GIC_V2M))
+                gicv2m_init(NULL, gic_data[0].domain);
+
         return 0;
 }
 IRQCHIP_ACPI_DECLARE(gic_v2, ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR,