diff options
Diffstat (limited to 'include/dm/acpi.h')
| -rw-r--r-- | include/dm/acpi.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/dm/acpi.h b/include/dm/acpi.h index 49257914ff..7563a4c60a 100644 --- a/include/dm/acpi.h +++ b/include/dm/acpi.h @@ -25,6 +25,24 @@ #if !defined(__ACPI__) /** + * struct acpi_ctx - Context used for writing ACPI tables + * + * This contains a few useful pieces of information used when writing + * + * @current: Current address for writing + * @rsdp: Pointer to the Root System Description Pointer, typically used when + * adding a new table. The RSDP holds pointers to the RSDT and XSDT. + * @rsdt: Pointer to the Root System Description Table + * @xsdt: Pointer to the Extended System Description Table + */ +struct acpi_ctx { + void *current; + struct acpi_rsdp *rsdp; + struct acpi_rsdt *rsdt; + struct acpi_xsdt *xsdt; +}; + +/** * struct acpi_ops - ACPI operations supported by driver model */ struct acpi_ops { @@ -38,6 +56,15 @@ struct acpi_ops { * other error */ int (*get_name)(const struct udevice *dev, char *out_name); + + /** + * write_tables() - Write out any tables required by this device + * + * @dev: Device to write + * @ctx: ACPI context to use + * @return 0 if OK, -ve on error + */ + int (*write_tables)(const struct udevice *dev, struct acpi_ctx *ctx); }; #define device_get_acpi_ops(dev) ((dev)->driver->acpi_ops) @@ -72,6 +99,16 @@ int acpi_get_name(const struct udevice *dev, char *out_name); */ int acpi_copy_name(char *out_name, const char *name); +/** + * acpi_write_dev_tables() - Write ACPI tables required by devices + * + * This scans through all devices and tells them to write any tables they want + * to write. + * + * @return 0 if OK, -ve if any device returned an error + */ +int acpi_write_dev_tables(struct acpi_ctx *ctx); + #endif /* __ACPI__ */ #endif |