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[PATCH v2 3/6] genirq: introduce irq_chip_set_type_parent() helper

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  [PATCH v2 3/6] genirq: introduce irq_chip_set_type_parent() helper Grygorii Strashko <grygorii.strashko@ti.com> - 2015-08-12 19:50 +0200
    Re: [PATCH v2 3/6] genirq: introduce irq_chip_set_type_parent() helper Sudeep Holla <sudeep.holla@arm.com> - 2015-08-13 11:00 +0200
      Re: [PATCH v2 3/6] genirq: introduce irq_chip_set_type_parent() helper Grygorii Strashko <grygorii.strashko@ti.com> - 2015-08-13 12:00 +0200

#1206295 — [PATCH v2 3/6] genirq: introduce irq_chip_set_type_parent() helper

It's expected to use this helper when the current
domain doesn't implement .irq_set_type(),  but expect
the parent to do so.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
 include/linux/irq.h |  1 +
 kernel/irq/chip.c   | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 92188b0..51744bc 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -484,6 +484,7 @@ extern int irq_chip_set_affinity_parent(struct irq_data *data,
 extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);
 extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data,
 					     void *vcpu_info);
+extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
 #endif
 
 /* Handling of unhandled and spurious interrupts: */
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index bdb1b9d..b48938b 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -985,6 +985,26 @@ int irq_chip_set_affinity_parent(struct irq_data *data,
 }
 
 /**
+ * irq_chip_set_type_parent - Set IRQ type on the parent interrupt
+ * @data:	Pointer to interrupt specific data
+ * @type:	IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
+ *
+ * Conditional, as the underlying parent chip might not implement it.
+ */
+int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
+{
+	data = data->parent_data;
+
+	if (irq_data_get_irq_chip(data)->flags & IRQCHIP_SKIP_SET_WAKE)
+		return 0;
+
+	if (data->chip->irq_set_type)
+		return data->chip->irq_set_type(data, type);
+
+	return -ENOSYS;
+}
+
+/**
  * irq_chip_retrigger_hierarchy - Retrigger an interrupt in hardware
  * @data:	Pointer to interrupt specific data
  *
-- 
2.5.0

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#1206615

On 12/08/15 18:45, Grygorii Strashko wrote:
> It's expected to use this helper when the current
> domain doesn't implement .irq_set_type(),  but expect
> the parent to do so.
>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
> ---
>   include/linux/irq.h |  1 +
>   kernel/irq/chip.c   | 20 ++++++++++++++++++++
>   2 files changed, 21 insertions(+)
>
> diff --git a/include/linux/irq.h b/include/linux/irq.h
> index 92188b0..51744bc 100644
> --- a/include/linux/irq.h
> +++ b/include/linux/irq.h
> @@ -484,6 +484,7 @@ extern int irq_chip_set_affinity_parent(struct irq_data *data,
>   extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);
>   extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data,
>   					     void *vcpu_info);
> +extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
>   #endif
>
>   /* Handling of unhandled and spurious interrupts: */
> diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
> index bdb1b9d..b48938b 100644
> --- a/kernel/irq/chip.c
> +++ b/kernel/irq/chip.c
> @@ -985,6 +985,26 @@ int irq_chip_set_affinity_parent(struct irq_data *data,
>   }
>
>   /**
> + * irq_chip_set_type_parent - Set IRQ type on the parent interrupt
> + * @data:	Pointer to interrupt specific data
> + * @type:	IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
> + *
> + * Conditional, as the underlying parent chip might not implement it.
> + */
> +int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
> +{
> +	data = data->parent_data;
> +
> +	if (irq_data_get_irq_chip(data)->flags & IRQCHIP_SKIP_SET_WAKE)
> +		return 0;
> +

I think this is unrelated here(perhaps copy-paste error ?). I fail to
see how wakeup and trigger type are related.

Regards,
Sudeep
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#1206667

On 08/13/2015 11:58 AM, Sudeep Holla wrote:
>
>
> On 12/08/15 18:45, Grygorii Strashko wrote:
>> It's expected to use this helper when the current
>> domain doesn't implement .irq_set_type(),  but expect
>> the parent to do so.
>>
>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>> ---
>>   include/linux/irq.h |  1 +
>>   kernel/irq/chip.c   | 20 ++++++++++++++++++++
>>   2 files changed, 21 insertions(+)
>>
>> diff --git a/include/linux/irq.h b/include/linux/irq.h
>> index 92188b0..51744bc 100644
>> --- a/include/linux/irq.h
>> +++ b/include/linux/irq.h
>> @@ -484,6 +484,7 @@ extern int irq_chip_set_affinity_parent(struct
>> irq_data *data,
>>   extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned
>> int on);
>>   extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data,
>>                            void *vcpu_info);
>> +extern int irq_chip_set_type_parent(struct irq_data *data, unsigned
>> int type);
>>   #endif
>>
>>   /* Handling of unhandled and spurious interrupts: */
>> diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
>> index bdb1b9d..b48938b 100644
>> --- a/kernel/irq/chip.c
>> +++ b/kernel/irq/chip.c
>> @@ -985,6 +985,26 @@ int irq_chip_set_affinity_parent(struct irq_data
>> *data,
>>   }
>>
>>   /**
>> + * irq_chip_set_type_parent - Set IRQ type on the parent interrupt
>> + * @data:    Pointer to interrupt specific data
>> + * @type:    IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
>> + *
>> + * Conditional, as the underlying parent chip might not implement it.
>> + */
>> +int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
>> +{
>> +    data = data->parent_data;
>> +
>> +    if (irq_data_get_irq_chip(data)->flags & IRQCHIP_SKIP_SET_WAKE)
>> +        return 0;
>> +
>
> I think this is unrelated here(perhaps copy-paste error ?). I fail to
> see how wakeup and trigger type are related.

Oh. Yes, it's copy-paste error. thanks, will fix.

-- 
regards,
-grygorii
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