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authorThomas Gleixner <tglx@linutronix.de>2019-11-20 14:16:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2019-11-20 14:16:34 +0100
commit407e62f52aadd8124dcba407f18a03aedce9b86a (patch)
treeb095eb5b55d2a77a91d75cde279f2026ed74d823 /kernel
parent20a15ee040f23bd553d4e6bbb1f8724ccd282abc (diff)
parent585d1183ffeea5cbe2cd24863bbc90196d827257 (diff)
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Merge tag 'irqchip-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier: - Qualcomm PDC wakeup interrupt support - Layerscape external IRQ support - Broadcom bcm7038 PM and wakeup support - Ingenic driver cleanup and modernization - GICv3 ITS preparation for GICv4.1 updates - GICv4 fixes - Various cleanups
Diffstat (limited to 'kernel')
-rw-r--r--kernel/irq/chip.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index b76703b2c0af..b3fa2d87d2f3 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -1298,6 +1298,50 @@ EXPORT_SYMBOL_GPL(handle_fasteoi_mask_irq);
#endif /* CONFIG_IRQ_FASTEOI_HIERARCHY_HANDLERS */
/**
+ * irq_chip_set_parent_state - set the state of a parent interrupt.
+ *
+ * @data: Pointer to interrupt specific data
+ * @which: State to be restored (one of IRQCHIP_STATE_*)
+ * @val: Value corresponding to @which
+ *
+ * Conditional success, if the underlying irqchip does not implement it.
+ */
+int irq_chip_set_parent_state(struct irq_data *data,
+ enum irqchip_irq_state which,
+ bool val)
+{
+ data = data->parent_data;
+
+ if (!data || !data->chip->irq_set_irqchip_state)
+ return 0;
+
+ return data->chip->irq_set_irqchip_state(data, which, val);
+}
+EXPORT_SYMBOL_GPL(irq_chip_set_parent_state);
+
+/**
+ * irq_chip_get_parent_state - get the state of a parent interrupt.
+ *
+ * @data: Pointer to interrupt specific data
+ * @which: one of IRQCHIP_STATE_* the caller wants to know
+ * @state: a pointer to a boolean where the state is to be stored
+ *
+ * Conditional success, if the underlying irqchip does not implement it.
+ */
+int irq_chip_get_parent_state(struct irq_data *data,
+ enum irqchip_irq_state which,
+ bool *state)
+{
+ data = data->parent_data;
+
+ if (!data || !data->chip->irq_get_irqchip_state)
+ return 0;
+
+ return data->chip->irq_get_irqchip_state(data, which, state);
+}
+EXPORT_SYMBOL_GPL(irq_chip_get_parent_state);
+
+/**
* irq_chip_enable_parent - Enable the parent interrupt (defaults to unmask if
* NULL)
* @data: Pointer to interrupt specific data