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| author | Marcin Wojtas <mw@semihalf.com> | 2018-01-18 15:31:40 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-01-22 18:57:04 +0300 |
| commit | 7c6c57f2ab2c5113844fe187a7c45c4bd76dc671 (patch) | |
| tree | 41132234dab217c94395fed1f1d628ee4a6d6e73 /include/linux/property.h | |
| parent | b28f263b86709a1e26d7207112030e970abf4aab (diff) | |
| download | linux-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.h | 2 |
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, |