irqchip: Convert all alloc/xlate users from of_node to fwnode
Since we now have a generic data structure to express an
interrupt specifier, convert all hierarchical irqchips that
are OF based to use a fwnode_handle as part of their alloc
and xlate (which becomes translate) callbacks.
As most of these drivers have dependencies (they exchange IRQ
specifiers), change them all in a single, massive patch...
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-and-tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Graeme Gregory <graeme@xora.org.uk>
Cc: Jake Oshins <jakeo@microsoft.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Link: http://lkml.kernel.org/r/1444737105-31573-6-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 5793880..05d010b 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -737,32 +737,30 @@
return 0;
}
-static int gic_irq_domain_xlate(struct irq_domain *d,
- struct device_node *controller,
- const u32 *intspec, unsigned int intsize,
- unsigned long *out_hwirq, unsigned int *out_type)
+static int gic_irq_domain_translate(struct irq_domain *d,
+ struct irq_fwspec *fwspec,
+ unsigned long *hwirq,
+ unsigned int *type)
{
- if (irq_domain_get_of_node(d) != controller)
- return -EINVAL;
- if (intsize < 3)
- return -EINVAL;
+ if (is_of_node(fwspec->fwnode)) {
+ if (fwspec->param_count < 3)
+ return -EINVAL;
- switch(intspec[0]) {
- case 0: /* SPI */
- *out_hwirq = intspec[1] + 32;
- break;
- case 1: /* PPI */
- *out_hwirq = intspec[1] + 16;
- break;
- case GIC_IRQ_TYPE_LPI: /* LPI */
- *out_hwirq = intspec[1];
- break;
- default:
- return -EINVAL;
+ /* Get the interrupt number and add 16 to skip over SGIs */
+ *hwirq = fwspec->param[1] + 16;
+
+ /*
+ * For SPIs, we need to add 16 more to get the GIC irq
+ * ID number
+ */
+ if (!fwspec->param[0])
+ *hwirq += 16;
+
+ *type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;
+ return 0;
}
- *out_type = intspec[2] & IRQ_TYPE_SENSE_MASK;
- return 0;
+ return -EINVAL;
}
static int gic_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
@@ -771,10 +769,9 @@
int i, ret;
irq_hw_number_t hwirq;
unsigned int type = IRQ_TYPE_NONE;
- struct of_phandle_args *irq_data = arg;
+ struct irq_fwspec *fwspec = arg;
- ret = gic_irq_domain_xlate(domain, irq_data->np, irq_data->args,
- irq_data->args_count, &hwirq, &type);
+ ret = gic_irq_domain_translate(domain, fwspec, &hwirq, &type);
if (ret)
return ret;
@@ -797,7 +794,7 @@
}
static const struct irq_domain_ops gic_irq_domain_ops = {
- .xlate = gic_irq_domain_xlate,
+ .translate = gic_irq_domain_translate,
.alloc = gic_irq_domain_alloc,
.free = gic_irq_domain_free,
};