[PATCH 1/1] irqchip: stm32-exti: add domain translate function

[Loic Pallardy]

Domain translate function is needed to recover irq
configuration parameters from DT node

Signed-off-by: Loic Pallardy <loic.palla...@st.com>
---
 drivers/irqchip/irq-stm32-exti.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index 6edfd4bfa169..717879028cc4 100644
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c
@@ -819,9 +819,27 @@ static int __init stm32_exti_init(const struct 
stm32_exti_drv_data *drv_data,
        return ret;
 }
 
+static int stm32_exti_h_translate(struct irq_domain *d,
+                                 struct irq_fwspec *fwspec,
+                                 unsigned long *out_hwirq,
+                                 unsigned int *out_type)
+{
+       if (is_of_node(fwspec->fwnode)) {
+               if (fwspec->param_count != 2)
+                       return -EINVAL;
+
+               *out_hwirq = fwspec->param[0];
+               *out_type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
+               return 0;
+       }
+
+       return -EINVAL;
+}
+
 static const struct irq_domain_ops stm32_exti_h_domain_ops = {
        .alloc  = stm32_exti_h_domain_alloc,
        .free   = irq_domain_free_irqs_common,
+       .translate = stm32_exti_h_translate,
 };
 
 static int
-- 
2.7.4