| Message ID | 20210311062011.8054-11-calvin.johnson@oss.nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ACPI support for dpaa2 driver | expand |
On Thu, Mar 11, 2021 at 8:22 AM Calvin Johnson <calvin.johnson@oss.nxp.com> wrote: > > Introduce a wrapper around the _ADR evaluation. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> > Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com> > --- > > Changes in v7: None > Changes in v6: None > Changes in v5: > - Replace fwnode_get_id() with acpi_get_local_address() > > Changes in v4: > - Improve code structure to handle all cases > > Changes in v3: > - Modified to retrieve reg property value for ACPI as well > - Resolved compilation issue with CONFIG_ACPI = n > - Added more info into documentation > > Changes in v2: None > > drivers/acpi/utils.c | 14 ++++++++++++++ > include/linux/acpi.h | 7 +++++++ > 2 files changed, 21 insertions(+) > > diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c > index 682edd913b3b..41fe380a09a7 100644 > --- a/drivers/acpi/utils.c > +++ b/drivers/acpi/utils.c > @@ -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, > diff --git a/include/linux/acpi.h b/include/linux/acpi.h > index fcdaab723916..700f9fc303ab 100644 > --- a/include/linux/acpi.h > +++ b/include/linux/acpi.h > @@ -706,6 +706,8 @@ 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 > @@ -953,6 +955,11 @@ 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 > -- > 2.17.1 >
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 682edd913b3b..41fe380a09a7 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -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, diff --git a/include/linux/acpi.h b/include/linux/acpi.h index fcdaab723916..700f9fc303ab 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -706,6 +706,8 @@ 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 @@ -953,6 +955,11 @@ 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
Introduce a wrapper around the _ADR evaluation. Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com> --- Changes in v7: None Changes in v6: None Changes in v5: - Replace fwnode_get_id() with acpi_get_local_address() Changes in v4: - Improve code structure to handle all cases Changes in v3: - Modified to retrieve reg property value for ACPI as well - Resolved compilation issue with CONFIG_ACPI = n - Added more info into documentation Changes in v2: None drivers/acpi/utils.c | 14 ++++++++++++++ include/linux/acpi.h | 7 +++++++ 2 files changed, 21 insertions(+)