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irqchip/gicv3-its: platform-msi: Refactor its_pmsi_init() to prepare for ACPI

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Introduce its_pmsi_init_one() to separate firmware dependent
code (ie OF dependent code) and firmware agnostic code so
that gic3-its code can be made to support other firmware
bindings easily.

Signed-off-by: Hanjun Guo <[email protected]>
[[email protected]: rewrote commit log]
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Matthias Brugger <[email protected]>
Tested-by: Ming Lei <[email protected]>
Tested-by: Wei Xu <[email protected]>
Tested-by: Sinan Kaya <[email protected]>
Cc: Tomasz Nowicki <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
This commit is contained in:
Hanjun Guo 2017-03-07 20:40:01 +08:00 • committed by Marc Zyngier
commit 42677db900
1 changed files with 27 additions and 18 deletions
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45
drivers/irqchip/irq-gic-v3-its-platform-msi.c
View file

@ -82,34 +82,43 @@ static struct of_device_id its_device_id[] = {
{},
};
static int __init its_pmsi_init(void)
static int __init its_pmsi_init_one(struct fwnode_handle *fwnode,
const char *name)
{
struct irq_domain *parent;
parent = irq_find_matching_fwnode(fwnode, DOMAIN_BUS_NEXUS);
if (!parent || !msi_get_domain_info(parent)) {
pr_err("%s: unable to locate ITS domain\n", name);
return -ENXIO;
}
if (!platform_msi_create_irq_domain(fwnode, &its_pmsi_domain_info,
parent)) {
pr_err("%s: unable to create platform domain\n", name);
return -ENXIO;
}
pr_info("Platform MSI: %s domain created\n", name);
return 0;
}
static void __init its_pmsi_of_init(void)
{
struct device_node *np;
struct irq_domain *parent;
for (np = of_find_matching_node(NULL, its_device_id); np;
np = of_find_matching_node(np, its_device_id)) {
if (!of_property_read_bool(np, "msi-controller"))
continue;
parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS);
if (!parent || !msi_get_domain_info(parent)) {
pr_err("%s: unable to locate ITS domain\n",
np->full_name);
continue;
}
if (!platform_msi_create_irq_domain(of_node_to_fwnode(np),
&its_pmsi_domain_info,
parent)) {
pr_err("%s: unable to create platform domain\n",
np->full_name);
continue;
}
pr_info("Platform MSI: %s domain created\n", np->full_name);
its_pmsi_init_one(of_node_to_fwnode(np), np->full_name);
}
}
static int __init its_pmsi_init(void)
{
its_pmsi_of_init();
return 0;
}
early_initcall(its_pmsi_init);