diff options
Diffstat (limited to 'drivers/irqchip/irq-loongson-liointc.c')
| -rw-r--r-- | drivers/irqchip/irq-loongson-liointc.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c index 838c8fa2d868..a4a7cccd1181 100644 --- a/drivers/irqchip/irq-loongson-liointc.c +++ b/drivers/irqchip/irq-loongson-liointc.c @@ -354,6 +354,26 @@ IRQCHIP_DECLARE(loongson_liointc_2_0, "loongson,liointc-2.0", liointc_of_init); #endif #ifdef CONFIG_ACPI +static int __init htintc_parse_madt(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_madt_ht_pic *htintc_entry = (struct acpi_madt_ht_pic *)header; + struct irq_domain *parent = irq_find_matching_fwnode(liointc_handle, DOMAIN_BUS_ANY); + + return htvec_acpi_init(parent, htintc_entry); +} + +static int __init acpi_cascade_irqdomain_init(void) +{ + int r; + + r = acpi_table_parse_madt(ACPI_MADT_TYPE_HT_PIC, htintc_parse_madt, 0); + if (r < 0) + return r; + + return 0; +} + int __init liointc_acpi_init(struct irq_domain *parent, struct acpi_madt_lio_pic *acpi_liointc) { int ret; @@ -370,9 +390,12 @@ int __init liointc_acpi_init(struct irq_domain *parent, struct acpi_madt_lio_pic pr_err("Unable to allocate domain handle\n"); return -ENOMEM; } + ret = liointc_init(acpi_liointc->address, acpi_liointc->size, 1, domain_handle, NULL); - if (ret) + if (ret == 0) + ret = acpi_cascade_irqdomain_init(); + else irq_domain_free_fwnode(domain_handle); return ret; |