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authorBartosz Golaszewski <brgl@bgdev.pl>2017-05-31 18:07:00 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-06-21 15:53:11 +0200
commit30fd8fc5c91973485705f83c7efe9588b8e6f371 (patch)
tree1d3908654e7cc9a33a05db0e2a68164d7d3e3a8d /kernel/irq/devres.c
parent1c3e36309fe2e94b8a889fa32cb5c871434f8ed6 (diff)
downloadlinux-stericsson-30fd8fc5c91973485705f83c7efe9588b8e6f371.tar.gz
irq/generic-chip: Provide devm_irq_setup_generic_chip()
Provide a resource managed variant of irq_setup_generic_chip(). Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-doc@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Link: http://lkml.kernel.org/r/1496246820-13250-6-git-send-email-brgl@bgdev.pl
Diffstat (limited to 'kernel/irq/devres.c')
-rw-r--r--kernel/irq/devres.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/kernel/irq/devres.c b/kernel/irq/devres.c
index 21ee0aebccfb..194c506d9d20 100644
--- a/kernel/irq/devres.c
+++ b/kernel/irq/devres.c
@@ -231,4 +231,56 @@ devm_irq_alloc_generic_chip(struct device *dev, const char *name, int num_ct,
return gc;
}
EXPORT_SYMBOL_GPL(devm_irq_alloc_generic_chip);
+
+struct irq_generic_chip_devres {
+ struct irq_chip_generic *gc;
+ u32 msk;
+ unsigned int clr;
+ unsigned int set;
+};
+
+static void devm_irq_remove_generic_chip(struct device *dev, void *res)
+{
+ struct irq_generic_chip_devres *this = res;
+
+ irq_remove_generic_chip(this->gc, this->msk, this->clr, this->set);
+}
+
+/**
+ * devm_irq_setup_generic_chip - Setup a range of interrupts with a generic
+ * chip for a managed device
+ *
+ * @dev: Device to setup the generic chip for
+ * @gc: Generic irq chip holding all data
+ * @msk: Bitmask holding the irqs to initialize relative to gc->irq_base
+ * @flags: Flags for initialization
+ * @clr: IRQ_* bits to clear
+ * @set: IRQ_* bits to set
+ *
+ * Set up max. 32 interrupts starting from gc->irq_base. Note, this
+ * initializes all interrupts to the primary irq_chip_type and its
+ * associated handler.
+ */
+int devm_irq_setup_generic_chip(struct device *dev, struct irq_chip_generic *gc,
+ u32 msk, enum irq_gc_flags flags,
+ unsigned int clr, unsigned int set)
+{
+ struct irq_generic_chip_devres *dr;
+
+ dr = devres_alloc(devm_irq_remove_generic_chip,
+ sizeof(*dr), GFP_KERNEL);
+ if (!dr)
+ return -ENOMEM;
+
+ irq_setup_generic_chip(gc, msk, flags, clr, set);
+
+ dr->gc = gc;
+ dr->msk = msk;
+ dr->clr = clr;
+ dr->set = set;
+ devres_add(dev, dr);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devm_irq_setup_generic_chip);
#endif /* CONFIG_GENERIC_IRQ_CHIP */