@@ -387,13 +387,15 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
u8 pin;
int triggering = ACPI_LEVEL_SENSITIVE;
/*
- * On ARM systems with the GIC interrupt model, level interrupts
+ * On ARM systems with the GIC interrupt model, or LoongArch
+ * systems with the LPIC interrupt model, level interrupts
* are always polarity high by specification; PCI legacy
* IRQs lines are inverted before reaching the interrupt
* controller and must therefore be considered active high
* as default.
*/
- int polarity = acpi_irq_model == ACPI_IRQ_MODEL_GIC ?
+ int polarity = acpi_irq_model == ACPI_IRQ_MODEL_GIC ||
+ acpi_irq_model == ACPI_IRQ_MODEL_LPIC ?
ACPI_ACTIVE_HIGH : ACPI_ACTIVE_LOW;
char *link = NULL;
char link_desc[16];
@@ -159,11 +159,18 @@ static int pch_pic_domain_translate(struct irq_domain *d,
return -EINVAL;
if (of_node) {
+ if (fwspec->param_count < 2)
+ return -EINVAL;
+
*hwirq = fwspec->param[0] + priv->ht_vec_base;
*type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
} else {
*hwirq = fwspec->param[0] - priv->gsi_base;
- *type = IRQ_TYPE_NONE;
+
+ if (fwspec->param_count > 1)
+ *type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
+ else
+ *type = IRQ_TYPE_NONE;
}
return 0;
For ACPI path, the translate callback used IRQ_TYPE_NONE and ignored the irq type in fwspec->param[1]. For supporting to set type for irqs of the irqdomain, fwspec->param[1] should be used to get irq type. On Loongson platform, the irq trigger type of PCI devices is high level, so high level triggered type is inputed to acpi_register_gsi when create irq mapping for PCI devices. Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn> --- drivers/acpi/pci_irq.c | 6 ++++-- drivers/irqchip/irq-loongson-pch-pic.c | 9 ++++++++- 2 files changed, 12 insertions(+), 3 deletions(-)