diff options
| author | David Daney <david.daney@cavium.com> | 2017-08-17 17:53:34 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-18 11:21:42 +0200 |
| commit | 495c38d3001fd226cf91df1d031320f349bcaf35 (patch) | |
| tree | e95708012ea936df31395e7d0139c4ae82ae9ff0 /include/linux/irqdomain.h | |
| parent | 0d12ec075a18f53e6f58ec95a4f534da2641bf9b (diff) | |
irqdomain: Add irq_domain_{push,pop}_irq() functions
For an already existing irqdomain hierarchy, as might be obtained via
a call to pci_enable_msix_range(), a PCI driver wishing to add an
additional irqdomain to the hierarchy needs to be able to insert the
irqdomain to that already initialized hierarchy. Calling
irq_domain_create_hierarchy() allows the new irqdomain to be created,
but no existing code allows for initializing the associated irq_data.
Add a couple of helper functions (irq_domain_push_irq() and
irq_domain_pop_irq()) to initialize the irq_data for the new
irqdomain added to an existing hierarchy.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Link: http://lkml.kernel.org/r/1503017616-3252-6-git-send-email-david.daney@cavium.com
Diffstat (limited to 'include/linux/irqdomain.h')
| -rw-r--r-- | include/linux/irqdomain.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index cac77a5c5555..2318f29054af 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -460,6 +460,9 @@ extern void irq_domain_free_irqs_common(struct irq_domain *domain, extern void irq_domain_free_irqs_top(struct irq_domain *domain, unsigned int virq, unsigned int nr_irqs); +extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg); +extern int irq_domain_pop_irq(struct irq_domain *domain, int virq); + extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain, unsigned int irq_base, unsigned int nr_irqs, void *arg); |