[PATCH v2 2/5] ARM: OMAP2/3: intc: Add irqdomain support
From: Benoit Cousson <hidden>
Date: 2011-12-20 13:39:55
Also in:
linux-devicetree, linux-omap
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Introduce the usage of the irqdomain to prepare the DT support. The irq_base is still hard coded to 0 to allow non-DT drivers to work with the previous assumption that was hwirq = irq. Signed-off-by: Benoit Cousson <redacted> Cc: Tony Lindgren <tony@atomide.com> Cc: Rob Herring <redacted> --- arch/arm/mach-omap2/irq.c | 18 +++++++++++++++++- 1 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 42b1d65..2f65dfd 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c@@ -17,6 +17,7 @@ #include <mach/hardware.h> #include <asm/exception.h> #include <asm/mach/irq.h> +#include <linux/irqdomain.h> /* selected INTC register offsets */
@@ -57,6 +58,8 @@ static struct omap_irq_bank { }, }; +static struct irq_domain domain; + /* Structure to save interrupt controller context */ struct omap3_intc_regs { u32 sysconfig;
@@ -158,6 +161,17 @@ static void __init omap_init_irq(u32 base, int nr_irqs) if (WARN_ON(!omap_irq_base)) return; + /* + * XXX: Use a 0 irq_base for the moment since the legacy devices + * created statically are expected a hwirq = irq mapping. + * A proper offset will be added later, when IRQ resource creation + * will be handled by DT. + */ + domain.irq_base = 0; + domain.nr_irq = nr_irqs; + domain.ops = &irq_domain_simple_ops; + irq_domain_add(&domain); + for (i = 0; i < ARRAY_SIZE(irq_banks); i++) { struct omap_irq_bank *bank = irq_banks + i;
@@ -225,8 +239,10 @@ out: irqnr = readl_relaxed(base_addr + INTCPS_SIR_IRQ_OFFSET); irqnr &= ACTIVEIRQ_MASK; - if (irqnr) + if (irqnr) { + irqnr = irq_domain_to_irq(&domain, irqnr); handle_IRQ(irqnr, regs); + } } while (irqnr); }
--
1.7.0.4