diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/dm/acpi.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/include/dm/acpi.h b/include/dm/acpi.h index a2da57fe224..2f52950d16e 100644 --- a/include/dm/acpi.h +++ b/include/dm/acpi.h @@ -27,6 +27,8 @@ #if !defined(__ACPI__) +#include <linker_lists.h> + struct nhlt; struct udevice; @@ -69,6 +71,48 @@ struct acpi_ctx { }; /** + * enum acpi_writer_flags_t - flags to use for the ACPI writers + */ +enum acpi_writer_flags_t { + ACPIWF_ALIGN64_, +}; + +struct acpi_writer; + +/** + * acpi_writer_func() - Function that can write an ACPI table + * + * @ctx: ACPI context to use for writing + * @entry: Linker-list entry for this writer + * @return 0 if OK, -ve on error + */ +typedef int (*acpi_writer_func)(struct acpi_ctx *ctx, + const struct acpi_writer *entry); + +/** + * struct acpi_writer - an ACPI table that can be written + * + * @name: Name of the writer + * @table: Table name that is generated (e.g. "DSDT") + * @h_write: Writer function + */ +struct acpi_writer { + const char *name; + const char *table; + acpi_writer_func h_write; + int flags; +}; + +/* Declare a new ACPI table writer */ +#define ACPI_WRITER(_name, _table, _write, _flags) \ + ll_entry_declare(struct acpi_writer, _name, acpi_writer) = { \ + .name = #_name, \ + .table = _table, \ + .h_write = _write, \ + .flags = _flags, \ + } + +/** * struct acpi_ops - ACPI operations supported by driver model */ struct acpi_ops { @@ -240,6 +284,19 @@ int acpi_get_path(const struct udevice *dev, char *out_path, int maxlen); */ void acpi_reset_items(void); +/** + * acpi_write_one() - Call a single ACPI writer entry + * + * This handles aligning the context afterwards, if the entry flags indicate + * that. + * + * @ctx: ACPI context to use + * @entry: Entry to call + * @return 0 if OK, -ENOENT if this writer produced an empty entry, other -ve + * value on error + */ +int acpi_write_one(struct acpi_ctx *ctx, const struct acpi_writer *entry); + #endif /* __ACPI__ */ #endif |