Commit-ID: 56e8abab615e0c5858cfb9fa0015a44641762b9d
Gitweb: http://git.kernel.org/tip/56e8abab615e0c5858cfb9fa0015a44641762b9d
Author: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
AuthorDate: Thu, 13 Nov 2014 23:37:05 +0800
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Sun, 23 Nov 2014 13:01:46 +0100
genirq: Add more helper functions to support stacked irq_chip
Add more helper function for stacked irq_chip to just call parent's
function.
Signed-off-by: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Gran Likely <grant.likely@xxxxxxxxxx>
Cc: Boris BREZILLON <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Cc: <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Yijing Wang <wangyijing@xxxxxxxxxx>
Cc: <srv_heupstream@xxxxxxxxxxxx>
Cc: <yingjoe.chen@xxxxxxxxx>
Cc: <hc.yen@xxxxxxxxxxxx>
Cc: <eddie.huang@xxxxxxxxxxxx>
Cc: <nathan.chung@xxxxxxxxxxxx>
Cc: <yh.chen@xxxxxxxxxxxx>
Cc: Sascha Hauer <kernel@xxxxxxxxxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Link: http://lkml.kernel.org/r/1415893029-2971-3-git-send-email-yingjoe.chen@xxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/irq.h | 6 ++++++
kernel/irq/chip.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 0adcbbb..fad4bf6 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -446,6 +446,12 @@ extern void handle_nested_irq(unsigned int irq);
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
extern void irq_chip_ack_parent(struct irq_data *data);
extern int irq_chip_retrigger_hierarchy(struct irq_data *data);
+extern void irq_chip_mask_parent(struct irq_data *data);
+extern void irq_chip_unmask_parent(struct irq_data *data);
+extern void irq_chip_eoi_parent(struct irq_data *data);
+extern int irq_chip_set_affinity_parent(struct irq_data *data,
+ const struct cpumask *dest,
+ bool force);
#endif
/* Handling of unhandled and spurious interrupts: */
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index dd1d3c4..47f4c64 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -863,6 +863,54 @@ void irq_chip_ack_parent(struct irq_data *data)
}
/**
+ * irq_chip_mask_parent - Mask the parent interrupt
+ * @data: Pointer to interrupt specific data
+ */
+void irq_chip_mask_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+ data->chip->irq_mask(data);
+}
+
+/**
+ * irq_chip_unmask_parent - Unmask the parent interrupt
+ * @data: Pointer to interrupt specific data
+ */
+void irq_chip_unmask_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+ data->chip->irq_unmask(data);
+}
+
+/**
+ * irq_chip_eoi_parent - Invoke EOI on the parent interrupt
+ * @data: Pointer to interrupt specific data
+ */
+void irq_chip_eoi_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+ data->chip->irq_eoi(data);
+}
+
+/**
+ * irq_chip_set_affinity_parent - Set affinity on the parent interrupt
+ * @data: Pointer to interrupt specific data
+ * @dest: The affinity mask to set
+ * @force: Flag to enforce setting (disable online checks)
+ *
+ * Conditinal, as the underlying parent chip might not implement it.
+ */
+int irq_chip_set_affinity_parent(struct irq_data *data,
+ const struct cpumask *dest, bool force)
+{
+ data = data->parent_data;
+ if (data->chip->irq_set_affinity)
+ return data->chip->irq_set_affinity(data, dest, force);
+
+ return -ENOSYS;
+}
+
+/**
* irq_chip_retrigger_hierarchy - Retrigger an interrupt in hardware
* @data: Pointer to interrupt specific data
*
--
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