Re: [PATCH v2 05/17] irqchip: Convert all alloc/xlate users from of_node to fwnode
From: Tomasz Nowicki
Date: Wed Oct 14 2015 - 11:38:09 EST
On 14.10.2015 17:31, Marc Zyngier wrote:
On 14/10/15 16:26, Tomasz Nowicki wrote:
Hi Marc,
On 13.10.2015 13:51, Marc Zyngier wrote:
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@xxxxxxx>
---
arch/arm/mach-exynos/suspend.c | 55 ++++++++++++++++---------------
arch/arm/mach-imx/gpc.c | 55 ++++++++++++++++---------------
arch/arm/mach-omap2/omap-wakeupgen.c | 55 ++++++++++++++++---------------
drivers/irqchip/irq-crossbar.c | 62 ++++++++++++++++++----------------
drivers/irqchip/irq-gic-v2m.c | 18 ++++++----
drivers/irqchip/irq-gic-v3-its.c | 20 ++++++-----
drivers/irqchip/irq-gic-v3.c | 49 +++++++++++++--------------
drivers/irqchip/irq-gic.c | 33 ++++++++++++++++---
drivers/irqchip/irq-imx-gpcv2.c | 64 ++++++++++++++++--------------------
drivers/irqchip/irq-mtk-sysirq.c | 49 ++++++++++++++-------------
drivers/irqchip/irq-nvic.c | 18 +++++++---
drivers/irqchip/irq-tegra.c | 55 ++++++++++++++++---------------
drivers/irqchip/irq-vf610-mscm-ir.c | 42 +++++++++++++++--------
13 files changed, 323 insertions(+), 252 deletions(-)
[...]
static int its_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
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 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq,
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;
}
What about GIC_IRQ_TYPE_LPI type? Previously we leaved interrupt line nr
and now +32.
Please see the patch I've posted earlier that address this particular issue:
https://lkml.org/lkml/2015/10/14/272
Makes sense, thanks.
Tomasz
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