ACPI / blacklist: add acpi_match_platform_list()
ACPI OEM ID / OEM Table ID / Revision can be used to identify
a platform based on ACPI firmware info. acpi_blacklisted(),
intel_pstate_platform_pwr_mgmt_exists(), and some other funcs,
have been using similar check to detect a list of platforms
that require special handlings.
Move the platform check in acpi_blacklisted() to a new common
utility function, acpi_match_platform_list(), so that other
drivers do not have to implement their own version.
There is no change in functionality.
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 27b4b66..1c8a97d 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -556,6 +556,25 @@
#define ACPI_OST_SC_DRIVER_LOAD_FAILURE 0x81
#define ACPI_OST_SC_INSERT_NOT_SUPPORTED 0x82
+enum acpi_predicate {
+ all_versions,
+ less_than_or_equal,
+ equal,
+ greater_than_or_equal,
+};
+
+/* Table must be terminted by a NULL entry */
+struct acpi_platform_list {
+ char oem_id[ACPI_OEM_ID_SIZE+1];
+ char oem_table_id[ACPI_OEM_TABLE_ID_SIZE+1];
+ u32 oem_revision;
+ char *table;
+ enum acpi_predicate pred;
+ char *reason;
+ u32 data;
+};
+int acpi_match_platform_list(const struct acpi_platform_list *plat);
+
extern void acpi_early_init(void);
extern void acpi_subsystem_init(void);