diff options
| author | Agustin Vega-Frias <agustinv@codeaurora.org> | 2017-02-03 02:23:58 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2017-02-03 18:03:48 +0300 |
| commit | d44fa3d46079dc095c1346fa6e5bc96dca1ead41 (patch) | |
| tree | 6c2880d745b366a4a024e3048e6727873a43b773 /include/linux/acpi.h | |
| parent | fa20b176f609c813d2c677f54c814cbb7ea5f1d1 (diff) | |
| download | linux-d44fa3d46079dc095c1346fa6e5bc96dca1ead41.tar.xz | |
ACPI: Add support for ResourceSource/IRQ domain mapping
ACPI extended IRQ resources may contain a ResourceSource to specify
an alternate interrupt controller. Introduce acpi_irq_get and use it
to implement ResourceSource/IRQ domain mapping.
The new API is similar to of_irq_get and allows re-initialization
of a platform resource from the ACPI extended IRQ resource, and
provides proper behavior for probe deferral when the domain is not
yet present when called.
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 5b36974ed60a..8e577c2cb0ce 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1153,4 +1153,14 @@ int parse_spcr(bool earlycon); static inline int parse_spcr(bool earlycon) { return 0; } #endif +#if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI) +int acpi_irq_get(acpi_handle handle, unsigned int index, struct resource *res); +#else +static inline +int acpi_irq_get(acpi_handle handle, unsigned int index, struct resource *res) +{ + return -EINVAL; +} +#endif + #endif /*_LINUX_ACPI_H*/ |