diff options
Diffstat (limited to 'drivers/acpi/parser/psopcode.c')
| -rw-r--r-- | drivers/acpi/parser/psopcode.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/acpi/parser/psopcode.c b/drivers/acpi/parser/psopcode.c index 9296e86761d7..3bf8105d6348 100644 --- a/drivers/acpi/parser/psopcode.c +++ b/drivers/acpi/parser/psopcode.c @@ -49,6 +49,8 @@ #define _COMPONENT ACPI_PARSER ACPI_MODULE_NAME("psopcode") +const u8 acpi_gbl_argument_count[] = { 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 6 }; + /******************************************************************************* * * NAME: acpi_gbl_aml_op_info @@ -59,6 +61,7 @@ ACPI_MODULE_NAME("psopcode") * the operand type. * ******************************************************************************/ + /* * Summary of opcode types/flags * @@ -176,6 +179,7 @@ ACPI_MODULE_NAME("psopcode") AML_CREATE_QWORD_FIELD_OP ******************************************************************************/ + /* * Master Opcode information table. A summary of everything we know about each * opcode, all in one place. @@ -779,3 +783,25 @@ char *acpi_ps_get_opcode_name(u16 opcode) #endif } + +/******************************************************************************* + * + * FUNCTION: acpi_ps_get_argument_count + * + * PARAMETERS: op_type - Type associated with the AML opcode + * + * RETURN: Argument count + * + * DESCRIPTION: Obtain the number of expected arguments for an AML opcode + * + ******************************************************************************/ + +u8 acpi_ps_get_argument_count(u32 op_type) +{ + + if (op_type <= AML_TYPE_EXEC_6A_0T_1R) { + return (acpi_gbl_argument_count[op_type]); + } + + return (0); +} |