1 files changed, 7 insertions, 5 deletions

diff --git a/include/acpi/amlcode.h b/include/acpi/amlcode.h
index 2ec538eac58e..55e97ed29190 100644
--- a/include/acpi/amlcode.h
+++ b/include/acpi/amlcode.h
@@ -146,8 +146,7 @@
 
 /* prefixed opcodes */
 
-#define AML_EXTOP                   (u16) 0x005b
-
+#define AML_EXTOP                   (u16) 0x005b     /* prefix for 2-byte opcodes */
 
 #define AML_MUTEX_OP                (u16) 0x5b01
 #define AML_EVENT_OP                (u16) 0x5b02
@@ -194,7 +193,6 @@
  * Use only "Unknown" AML opcodes, don't attempt to use
  * any valid ACPI ASCII values (A-Z, 0-9, '-')
  */
-
 #define AML_INT_NAMEPATH_OP         (u16) 0x002d
 #define AML_INT_NAMEDFIELD_OP       (u16) 0x0030
 #define AML_INT_RESERVEDFIELD_OP    (u16) 0x0031
@@ -214,7 +212,6 @@
  * There can be up to 31 unique argument types
  * Zero is reserved as end-of-list indicator
  */
-
 #define ARGP_BYTEDATA               0x01
 #define ARGP_BYTELIST               0x02
 #define ARGP_CHARLIST               0x03
@@ -295,7 +292,6 @@
 /*
  * opcode groups and types
  */
-
 #define OPGRP_NAMED                 0x01
 #define OPGRP_FIELD                 0x02
 #define OPGRP_BYTELIST              0x04
@@ -381,6 +377,12 @@
 #define AML_TYPE_UNDEFINED          0x19
 #define AML_TYPE_BOGUS              0x1A
 
+/* AML Package Length encodings */
+
+#define ACPI_AML_PACKAGE_TYPE1      0x40
+#define ACPI_AML_PACKAGE_TYPE2      0x4000
+#define ACPI_AML_PACKAGE_TYPE3      0x400000
+#define ACPI_AML_PACKAGE_TYPE4      0x40000000
 
 /*
  * Opcode classes