ACPICA: ACPI 5.1: Support for the _DSD predefined name.

Adds full support for _DSD. David Box.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2 files changed, 13 insertions, 1 deletions

diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h
index bd08817cafd8..c5bfadf5294a 100644
--- a/drivers/acpi/acpica/acpredef.h
+++ b/drivers/acpi/acpica/acpredef.h
@@ -105,6 +105,11 @@
  *      count = 0 (optional)
  *      (Used for _DLM)
  *
+ * ACPI_PTYPE2_UUID_PAIR: Each subpackage is preceded by a UUID Buffer. The UUID
+ *      defines the format of the package. Zero-length parent package is
+ *      allowed.
+ *      (Used for _DSD)
+ *
  *****************************************************************************/
 
 enum acpi_return_package_types {
@@ -117,7 +122,8 @@ enum acpi_return_package_types {
         ACPI_PTYPE2_FIXED = 7,
         ACPI_PTYPE2_MIN = 8,
         ACPI_PTYPE2_REV_FIXED = 9,
-        ACPI_PTYPE2_FIX_VAR = 10
+        ACPI_PTYPE2_FIX_VAR = 10,
+        ACPI_PTYPE2_UUID_PAIR = 11
 };
 
 /* Support macros for users of the predefined info table */
@@ -436,6 +442,11 @@ const union acpi_predefined_info acpi_gbl_predefined_methods[] = {
         {{"_DOS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
           METHOD_NO_RETURN_VALUE}},
 
+        {{"_DSD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each: 1 Buf, 1 Pkg */
+        PACKAGE_INFO(ACPI_PTYPE2_UUID_PAIR, ACPI_RTYPE_BUFFER, 1,
+                     ACPI_RTYPE_PACKAGE, 1, 0),
+
         {{"_DSM",
           METHOD_4ARGS(ACPI_TYPE_BUFFER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER,
                        ACPI_TYPE_PACKAGE),
diff --git a/include/acpi/acnames.h b/include/acpi/acnames.h
index 3dd6e838dc30..c728113374f5 100644
--- a/include/acpi/acnames.h
+++ b/include/acpi/acnames.h
@@ -55,6 +55,7 @@
 #define METHOD_NAME__HID        "_HID"
 #define METHOD_NAME__INI        "_INI"
 #define METHOD_NAME__PLD        "_PLD"
+#define METHOD_NAME__DSD        "_DSD"
 #define METHOD_NAME__PRS        "_PRS"
 #define METHOD_NAME__PRT        "_PRT"
 #define METHOD_NAME__PRW        "_PRW"