[RFC 7/8] ARM: VIC: Add vic_set_fiq function to select if an interrupt should generate an IRQ or FIQ
From: Daniel Thompson <hidden>
Date: 2014-05-14 15:58:44
Also in:
linux-arm-kernel, linux-devicetree
Subsystem:
arm primecell vic pl190/pl192 driver, irqchip drivers, the rest · Maintainers:
Linus Walleij, Thomas Gleixner, Linus Torvalds
From: Arve Hjønnevåg <arve@android.com> Signed-off-by: Arve Hjønnevåg <arve@android.com> Signed-off-by: Daniel Thompson <redacted> --- drivers/irqchip/irq-vic.c | 23 +++++++++++++++++++++++ include/linux/irqchip/arm-vic.h | 1 + 2 files changed, 24 insertions(+)
diff --git a/drivers/irqchip/irq-vic.c b/drivers/irqchip/irq-vic.c
index 7d35287..3eaa2e4 100644
--- a/drivers/irqchip/irq-vic.c
+++ b/drivers/irqchip/irq-vic.c@@ -337,6 +337,29 @@ static void vic_unmask_irq(struct irq_data *d) writel(1 << irq, base + VIC_INT_ENABLE); } +static DEFINE_SPINLOCK(vic_intselect_lock); +int vic_set_fiq(unsigned int irq, bool enable) +{ + u32 int_select; + u32 mask; + unsigned long irq_flags; + void __iomem *base = irq_get_chip_data(irq); + irq &= 31; + mask = 1 << irq; + + spin_lock_irqsave(&vic_intselect_lock, irq_flags); + int_select = readl(base + VIC_INT_SELECT); + if (enable) + int_select |= mask; + else + int_select &= ~mask; + writel(int_select, base + VIC_INT_SELECT); + spin_unlock_irqrestore(&vic_intselect_lock, irq_flags); + + return 0; +} +EXPORT_SYMBOL(vic_set_fiq); + #if defined(CONFIG_PM) static struct vic_device *vic_from_irq(unsigned int irq) {
diff --git a/include/linux/irqchip/arm-vic.h b/include/linux/irqchip/arm-vic.h
index ba46c79..61ee4c9 100644
--- a/include/linux/irqchip/arm-vic.h
+++ b/include/linux/irqchip/arm-vic.h@@ -34,5 +34,6 @@ void __vic_init(void __iomem *base, int parent_irq, int irq_start, void vic_init(void __iomem *base, unsigned int irq_start, u32 vic_sources, u32 resume_sources); int vic_init_cascaded(void __iomem *base, unsigned int parent_irq, u32 vic_sources, u32 resume_sources); +int vic_set_fiq(unsigned int irq, bool enable); #endif
--
1.9.0
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