OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

irqchip/irq-bcm2836: Add support for DT interrupt polarity 

In order to properly define the polarity of the per-cpu interrupts,
we need to support for a second property cell. But this must be
optional to keep backward compatibility with old DT blobs.

Suggested-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Stefan Wahren 2017-12-11 21:39:11 +01:00 committed by Marc Zyngier
parent 36464580e6
commit ad83c7cb2f
1 changed files with 27 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/irqchip/irq-bcm2836.c
View File

@ -98,13 +98,35 @@ static struct irq_chip bcm2836_arm_irqchip_gpu = {
.irq_unmask = bcm2836_arm_irqchip_unmask_gpu_irq,
};
static void bcm2836_arm_irqchip_register_irq(int hwirq, struct irq_chip *chip)
static int bcm2836_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hw)
{
int irq = irq_create_mapping(intc.domain, hwirq);
struct irq_chip *chip;
switch (hw) {
case LOCAL_IRQ_CNTPSIRQ:
case LOCAL_IRQ_CNTPNSIRQ:
case LOCAL_IRQ_CNTHPIRQ:
case LOCAL_IRQ_CNTVIRQ:
chip = &bcm2836_arm_irqchip_timer;
break;
case LOCAL_IRQ_GPU_FAST:
chip = &bcm2836_arm_irqchip_gpu;
break;
case LOCAL_IRQ_PMU_FAST:
chip = &bcm2836_arm_irqchip_pmu;
break;
default:
pr_warn_once("Unexpected hw irq: %lu\n", hw);
return -EINVAL;
}
irq_set_percpu_devid(irq);
irq_set_chip_and_handler(irq, chip, handle_percpu_devid_irq);
irq_domain_set_info(d, irq, hw, chip, d->host_data,
handle_percpu_devid_irq, NULL, NULL);
irq_set_status_flags(irq, IRQ_NOAUTOEN);
return 0;
}
static void
@ -165,7 +187,8 @@ static int bcm2836_cpu_dying(unsigned int cpu)
#endif
static const struct irq_domain_ops bcm2836_arm_irqchip_intc_ops = {
.xlate = irq_domain_xlate_onecell
.xlate = irq_domain_xlate_onetwocell,
.map = bcm2836_map,
};
static void
@ -218,19 +241,6 @@ static int __init bcm2836_arm_irqchip_l1_intc_of_init(struct device_node *node,
if (!intc.domain)
panic("%pOF: unable to create IRQ domain\n", node);
bcm2836_arm_irqchip_register_irq(LOCAL_IRQ_CNTPSIRQ,
&bcm2836_arm_irqchip_timer);
bcm2836_arm_irqchip_register_irq(LOCAL_IRQ_CNTPNSIRQ,
&bcm2836_arm_irqchip_timer);
bcm2836_arm_irqchip_register_irq(LOCAL_IRQ_CNTHPIRQ,
&bcm2836_arm_irqchip_timer);
bcm2836_arm_irqchip_register_irq(LOCAL_IRQ_CNTVIRQ,
&bcm2836_arm_irqchip_timer);
bcm2836_arm_irqchip_register_irq(LOCAL_IRQ_GPU_FAST,
&bcm2836_arm_irqchip_gpu);
bcm2836_arm_irqchip_register_irq(LOCAL_IRQ_PMU_FAST,
&bcm2836_arm_irqchip_pmu);
bcm2836_arm_irqchip_smp_init();
set_handle_irq(bcm2836_arm_irqchip_handle_irq);