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authorMarcin Wojtas <mw@semihalf.com>2018-01-18 15:31:40 +0300
committerDavid S. Miller <davem@davemloft.net>2018-01-22 18:57:04 +0300
commit7c6c57f2ab2c5113844fe187a7c45c4bd76dc671 (patch)
tree41132234dab217c94395fed1f1d628ee4a6d6e73 /include/linux/property.h
parentb28f263b86709a1e26d7207112030e970abf4aab (diff)
downloadlinux-7c6c57f2ab2c5113844fe187a7c45c4bd76dc671.tar.xz
device property: Introduce fwnode_irq_get()
Until now there were two very similar functions allowing to get Linux IRQ number from ACPI handle (acpi_irq_get()) and OF node (of_irq_get()). The first one appeared to be used only as a subroutine of platform_irq_get(), which (in the generic code) limited IRQ obtaining from _CRS method only to nodes associated to kernel's struct platform_device. This patch introduces a new helper routine - fwnode_irq_get(), which allows to get the IRQ number directly from the fwnode to be used as common for OF/ACPI worlds. It is usable not only for the parents fwnodes, but also for the child nodes comprising their own _CRS methods with interrupts description. In order to be able o satisfy compilation with !CONFIG_ACPI and also simplify the new code, introduce a helper macro (ACPI_HANDLE_FWNODE), with which it is possible to reach an ACPI handle directly from its fwnode. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/property.h')
-rw-r--r--include/linux/property.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/property.h b/include/linux/property.h
index 9b133320072f..e05889fdbb14 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -103,6 +103,8 @@ struct fwnode_handle *device_get_named_child_node(struct device *dev,
struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
void fwnode_handle_put(struct fwnode_handle *fwnode);
+int fwnode_irq_get(struct fwnode_handle *fwnode, unsigned int index);
+
unsigned int device_get_child_node_count(struct device *dev);
static inline bool device_property_read_bool(struct device *dev,