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authorOlof Johansson <olof@lixom.net>2014-01-03 21:55:29 -0800
committerOlof Johansson <olof@lixom.net>2014-01-03 21:55:29 -0800
commit3d7e0207ced354d1647195f53bcc670f9756c649 (patch)
treebedff8fa54a8a086e7426d66a0069323b5864986 /drivers/irqchip
parent7bfc397fe76de447ca645edd7453d8ef6ab18279 (diff)
parent8e048b9997efbe75fe77b1f14d3af41700cc8724 (diff)
Merge tag 'integrator-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/drivers
From Linus Walleij: Some Integrator patches that matured for v3.14: - Use PATCH_PHYS_TO_VIRT and AUTO_ZRELADDR. - Support cascaded interrupts on the SIC. - Complete clock implementation for the IM-PD1. * tag 'integrator-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator: clk: versatile: fixup IM-PD1 clock implementation clk: versatile: pass a name to ICST clock provider ARM: integrator: pass parent IRQ to the SIC irqchip: versatile FPGA: support cascaded interrupts from DT ARM: integrator: Default enable ARM_PATCH_PHYS_VIRT, AUTO_ZRELADDR Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-versatile-fpga.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-versatile-fpga.c b/drivers/irqchip/irq-versatile-fpga.c
index 47a52ab580d8..3ae2bb8d9cf2 100644
--- a/drivers/irqchip/irq-versatile-fpga.c
+++ b/drivers/irqchip/irq-versatile-fpga.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <asm/exception.h>
#include <asm/mach/irq.h>
@@ -167,8 +168,12 @@ void __init fpga_irq_init(void __iomem *base, const char *name, int irq_start,
f->used_irqs++;
}
- pr_info("FPGA IRQ chip %d \"%s\" @ %p, %u irqs\n",
+ pr_info("FPGA IRQ chip %d \"%s\" @ %p, %u irqs",
fpga_irq_id, name, base, f->used_irqs);
+ if (parent_irq != -1)
+ pr_cont(", parent IRQ: %d\n", parent_irq);
+ else
+ pr_cont("\n");
fpga_irq_id++;
}
@@ -180,6 +185,7 @@ int __init fpga_irq_of_init(struct device_node *node,
void __iomem *base;
u32 clear_mask;
u32 valid_mask;
+ int parent_irq;
if (WARN_ON(!node))
return -ENODEV;
@@ -193,7 +199,12 @@ int __init fpga_irq_of_init(struct device_node *node,
if (of_property_read_u32(node, "valid-mask", &valid_mask))
valid_mask = 0;
- fpga_irq_init(base, node->name, 0, -1, valid_mask, node);
+ /* Some chips are cascaded from a parent IRQ */
+ parent_irq = irq_of_parse_and_map(node, 0);
+ if (!parent_irq)
+ parent_irq = -1;
+
+ fpga_irq_init(base, node->name, 0, parent_irq, valid_mask, node);
writel(clear_mask, base + IRQ_ENABLE_CLEAR);
writel(clear_mask, base + FIQ_ENABLE_CLEAR);