iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ACPI: utils: Introduce acpi_get_local_address()

Browse Source 
Introduce a wrapper around the _ADR evaluation.

Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Grant Likely <grant.likely@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Calvin Johnson 2021-06-11 13:53:56 +03:00 committed by David S. Miller
parent 8d2cb3ad31
commit 7ec16433cf
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/acpi/utils.c
View File

@ -277,6 +277,20 @@ acpi_evaluate_integer(acpi_handle handle,
EXPORT_SYMBOL(acpi_evaluate_integer);
int acpi_get_local_address(acpi_handle handle, u32 *addr)
{
unsigned long long adr;
acpi_status status;
status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
if (ACPI_FAILURE(status))
return -ENODATA;
*addr = (u32)adr;
return 0;
}
EXPORT_SYMBOL(acpi_get_local_address);
acpi_status
acpi_evaluate_reference(acpi_handle handle,
acpi_string pathname,

7
include/linux/acpi.h
View File

@ -710,6 +710,8 @@ static inline u64 acpi_arch_get_root_pointer(void)
}
#endif
int acpi_get_local_address(acpi_handle handle, u32 *addr);
#else /* !CONFIG_ACPI */
#define acpi_disabled 1
@ -965,6 +967,11 @@ static inline struct acpi_device *acpi_resource_consumer(struct resource *res)
return NULL;
}
static inline int acpi_get_local_address(acpi_handle handle, u32 *addr)
{
return -ENODEV;
}
#endif /* !CONFIG_ACPI */
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC