[tip:irq/core] acpi/gsi: Add acpi_set_irq_model to initialize the GSI layer
From: tip-bot for Marc Zyngier
Date: Tue Oct 13 2015 - 13:58:27 EST
Commit-ID: 2bc6eba4a322e70eac8cde76442c4ac90699fb39
Gitweb: http://git.kernel.org/tip/2bc6eba4a322e70eac8cde76442c4ac90699fb39
Author: Marc Zyngier <marc.zyngier@xxxxxxx>
AuthorDate: Tue, 13 Oct 2015 12:51:38 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 13 Oct 2015 19:01:24 +0200
acpi/gsi: Add acpi_set_irq_model to initialize the GSI layer
In order to start embrassing irqdomains at the GSI level, introduce
a new initializer:
void acpi_set_irq_model(enum acpi_irq_model_id model,
struct fwnode_handle *fwnode);
where:
- model is the value assigned to acpi_irq_model
- fwnode is the identifier for the irqdomain mapping
GSI interrupts
As nobody calls this code yet, the current code is (mostly)
left in place.
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Reviewed-and-tested-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Tomasz Nowicki <tomasz.nowicki@xxxxxxxxxx>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
Cc: Graeme Gregory <graeme@xxxxxxxxxxx>
Cc: Jake Oshins <jakeo@xxxxxxxxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1444737105-31573-11-git-send-email-marc.zyngier@xxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
drivers/acpi/gsi.c | 32 +++++++++++++++++++++++++++-----
include/linux/acpi.h | 3 +++
2 files changed, 30 insertions(+), 5 deletions(-)
diff --git a/drivers/acpi/gsi.c b/drivers/acpi/gsi.c
index 2c39fe1..202a8fe 100644
--- a/drivers/acpi/gsi.c
+++ b/drivers/acpi/gsi.c
@@ -75,12 +75,21 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger,
{
unsigned int irq;
unsigned int irq_type = acpi_gsi_get_irq_type(trigger, polarity);
- struct irq_domain *d = irq_find_matching_fwnode(acpi_gsi_domain_id,
- DOMAIN_BUS_ANY);
- irq = irq_create_mapping(d, gsi);
- if (!irq)
- return -EINVAL;
+ if (acpi_gsi_domain_id) {
+ struct irq_fwspec fwspec;
+
+ fwspec.fwnode = acpi_gsi_domain_id;
+ fwspec.param[0] = gsi;
+ fwspec.param[1] = irq_type;
+ fwspec.param_count = 2;
+
+ return irq_create_fwspec_mapping(&fwspec);
+ } else {
+ irq = irq_create_mapping(NULL, gsi);
+ if (!irq)
+ return -EINVAL;
+ }
/* Set irq type if specified and different than the current one */
if (irq_type != IRQ_TYPE_NONE &&
@@ -103,3 +112,16 @@ void acpi_unregister_gsi(u32 gsi)
irq_dispose_mapping(irq);
}
EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+/**
+ * acpi_set_irq_model - Setup the GSI irqdomain information
+ * @model: the value assigned to acpi_irq_model
+ * @fwnode: the irq_domain identifier for mapping and looking up
+ * GSI interrupts
+ */
+void __init acpi_set_irq_model(enum acpi_irq_model_id model,
+ struct fwnode_handle *fwnode)
+{
+ acpi_irq_model = model;
+ acpi_gsi_domain_id = fwnode;
+}
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 43856d1..d863e12 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -201,6 +201,9 @@ int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity
int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi);
+void acpi_set_irq_model(enum acpi_irq_model_id model,
+ struct fwnode_handle *fwnode);
+
#ifdef CONFIG_X86_IO_APIC
extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity);
#else
--
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