From b79055952badbd73710685643bab44104f2509ea Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Thu, 6 Nov 2014 22:44:19 -0800 Subject: genirq: Generic chip: Add big endian I/O accessors Use io{read,write}32be if the caller specified IRQ_GC_BE_IO when creating the irqchip. Signed-off-by: Kevin Cernekee Acked-by: Thomas Gleixner Acked-by: Acked-by: Arnd Bergmann Link: https://lkml.kernel.org/r/1415342669-30640-5-git-send-email-cernekee@gmail.com Signed-off-by: Jason Cooper --- kernel/irq/generic-chip.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'kernel/irq/generic-chip.c') diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c index db458c68e392..61024e8abdef 100644 --- a/kernel/irq/generic-chip.c +++ b/kernel/irq/generic-chip.c @@ -191,6 +191,16 @@ int irq_gc_set_wake(struct irq_data *d, unsigned int on) return 0; } +static u32 irq_readl_be(void __iomem *addr) +{ + return ioread32be(addr); +} + +static void irq_writel_be(u32 val, void __iomem *addr) +{ + iowrite32be(val, addr); +} + static void irq_init_generic_chip(struct irq_chip_generic *gc, const char *name, int num_ct, unsigned int irq_base, @@ -300,7 +310,13 @@ int irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip, dgc->gc[i] = gc = tmp; irq_init_generic_chip(gc, name, num_ct, i * irqs_per_chip, NULL, handler); + gc->domain = d; + if (gcflags & IRQ_GC_BE_IO) { + gc->reg_readl = &irq_readl_be; + gc->reg_writel = &irq_writel_be; + } + raw_spin_lock_irqsave(&gc_lock, flags); list_add_tail(&gc->list, &gc_list); raw_spin_unlock_irqrestore(&gc_lock, flags); -- cgit