diff options
Diffstat (limited to 'kernel/Documentation/IRQ-domain.txt')
| -rw-r--r-- | kernel/Documentation/IRQ-domain.txt | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/Documentation/IRQ-domain.txt b/kernel/Documentation/IRQ-domain.txt index 3a8e15cba..8d990bde8 100644 --- a/kernel/Documentation/IRQ-domain.txt +++ b/kernel/Documentation/IRQ-domain.txt @@ -32,9 +32,9 @@ top of the irq_alloc_desc*() API. An irq_domain to manage mapping is preferred over interrupt controller drivers open coding their own reverse mapping scheme. -irq_domain also implements translation from Device Tree interrupt -specifiers to hwirq numbers, and can be easily extended to support -other IRQ topology data sources. +irq_domain also implements translation from an abstract irq_fwspec +structure to hwirq numbers (Device Tree and ACPI GSI so far), and can +be easily extended to support other IRQ topology data sources. === irq_domain usage === An interrupt controller driver creates and registers an irq_domain by @@ -184,7 +184,7 @@ There are four major interfaces to use hierarchy irq_domain: related resources associated with these interrupts. 3) irq_domain_activate_irq(): activate interrupt controller hardware to deliver the interrupt. -3) irq_domain_deactivate_irq(): deactivate interrupt controller hardware +4) irq_domain_deactivate_irq(): deactivate interrupt controller hardware to stop delivering the interrupt. Following changes are needed to support hierarchy irq_domain. |