diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2012-10-31 22:44:41 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2012-11-15 00:28:00 +0100 |
| commit | cf761af9ee0f2c172710ad2b7ca029016b5d4c45 (patch) | |
| tree | c73b0ccfd422545508188fd8ee31ea2d192e1a82 /include/linux/acpi.h | |
| parent | 06f64c8f239a47b359c60301914c783b56b32c13 (diff) | |
ACPI: Provide generic functions for matching ACPI device nodes
Introduce function acpi_match_device() allowing callers to match
struct device objects with populated acpi_handle fields against
arrays of ACPI device IDs. Also introduce function
acpi_driver_match_device() using acpi_match_device() internally and
allowing callers to match a struct device object against an array of
ACPI device IDs provided by a device driver.
Additionally, introduce macro ACPI_PTR() that may be used by device
drivers to escape pointers to data structures whose definitions
depend on CONFIG_ACPI.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 90be98981102..48761cb481db 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -26,6 +26,7 @@ #define _LINUX_ACPI_H #include <linux/ioport.h> /* for struct resource */ +#include <linux/device.h> #ifdef CONFIG_ACPI @@ -364,6 +365,17 @@ extern int acpi_nvs_register(__u64 start, __u64 size); extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), void *data); +const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, + const struct device *dev); + +static inline bool acpi_driver_match_device(struct device *dev, + const struct device_driver *drv) +{ + return !!acpi_match_device(drv->acpi_match_table, dev); +} + +#define ACPI_PTR(_ptr) (_ptr) + #else /* !CONFIG_ACPI */ #define acpi_disabled 1 @@ -418,6 +430,22 @@ static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), return 0; } +struct acpi_device_id; + +static inline const struct acpi_device_id *acpi_match_device( + const struct acpi_device_id *ids, const struct device *dev) +{ + return NULL; +} + +static inline bool acpi_driver_match_device(struct device *dev, + const struct device_driver *drv) +{ + return false; +} + +#define ACPI_PTR(_ptr) (NULL) + #endif /* !CONFIG_ACPI */ #ifdef CONFIG_ACPI |