Merge tag 'hwmon-for-linus-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / drivers / acpi / acpica / dbmethod.c

diff --git a/drivers/acpi/acpica/dbmethod.c b/drivers/acpi/acpica/dbmethod.c
index f17a86f..314b94c 100644 (file)
--- a/drivers/acpi/acpica/dbmethod.c
+++ b/drivers/acpi/acpica/dbmethod.c
@@ -52,6 +52,11 @@
 #define _COMPONENT          ACPI_CA_DEBUGGER
 ACPI_MODULE_NAME("dbmethod")
 
+/* Local prototypes */
+static acpi_status
+acpi_db_walk_for_execute(acpi_handle obj_handle,
+                        u32 nesting_level, void *context, void **return_value);
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_set_method_breakpoint
@@ -66,6 +71,7 @@ ACPI_MODULE_NAME("dbmethod")
  *              AML offset
  *
  ******************************************************************************/
+
 void
 acpi_db_set_method_breakpoint(char *location,
                              struct acpi_walk_state *walk_state,
@@ -367,3 +373,129 @@ acpi_status acpi_db_disassemble_method(char *name)
        acpi_ut_release_owner_id(&obj_desc->method.owner_id);
        return (AE_OK);
 }
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_walk_for_execute
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Batch execution module. Currently only executes predefined
+ *              ACPI names.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_execute(acpi_handle obj_handle,
+                        u32 nesting_level, void *context, void **return_value)
+{
+       struct acpi_namespace_node *node =
+           (struct acpi_namespace_node *)obj_handle;
+       struct acpi_db_execute_walk *info =
+           (struct acpi_db_execute_walk *)context;
+       struct acpi_buffer return_obj;
+       acpi_status status;
+       char *pathname;
+       u32 i;
+       struct acpi_device_info *obj_info;
+       struct acpi_object_list param_objects;
+       union acpi_object params[ACPI_METHOD_NUM_ARGS];
+       const union acpi_predefined_info *predefined;
+
+       predefined = acpi_ut_match_predefined_method(node->name.ascii);
+       if (!predefined) {
+               return (AE_OK);
+       }
+
+       if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
+               return (AE_OK);
+       }
+
+       pathname = acpi_ns_get_external_pathname(node);
+       if (!pathname) {
+               return (AE_OK);
+       }
+
+       /* Get the object info for number of method parameters */
+
+       status = acpi_get_object_info(obj_handle, &obj_info);
+       if (ACPI_FAILURE(status)) {
+               return (status);
+       }
+
+       param_objects.pointer = NULL;
+       param_objects.count = 0;
+
+       if (obj_info->type == ACPI_TYPE_METHOD) {
+
+               /* Setup default parameters */
+
+               for (i = 0; i < obj_info->param_count; i++) {
+                       params[i].type = ACPI_TYPE_INTEGER;
+                       params[i].integer.value = 1;
+               }
+
+               param_objects.pointer = params;
+               param_objects.count = obj_info->param_count;
+       }
+
+       ACPI_FREE(obj_info);
+       return_obj.pointer = NULL;
+       return_obj.length = ACPI_ALLOCATE_BUFFER;
+
+       /* Do the actual method execution */
+
+       acpi_gbl_method_executing = TRUE;
+
+       status = acpi_evaluate_object(node, NULL, &param_objects, &return_obj);
+
+       acpi_os_printf("%-32s returned %s\n", pathname,
+                      acpi_format_exception(status));
+       acpi_gbl_method_executing = FALSE;
+       ACPI_FREE(pathname);
+
+       /* Ignore status from method execution */
+
+       status = AE_OK;
+
+       /* Update count, check if we have executed enough methods */
+
+       info->count++;
+       if (info->count >= info->max_count) {
+               status = AE_CTRL_TERMINATE;
+       }
+
+       return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_evaluate_predefined_names
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Namespace batch execution. Execute predefined names in the
+ *              namespace, up to the max count, if specified.
+ *
+ ******************************************************************************/
+
+void acpi_db_evaluate_predefined_names(void)
+{
+       struct acpi_db_execute_walk info;
+
+       info.count = 0;
+       info.max_count = ACPI_UINT32_MAX;
+
+       /* Search all nodes in namespace */
+
+       (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+                                 ACPI_UINT32_MAX, acpi_db_walk_for_execute,
+                                 NULL, (void *)&info, NULL);
+
+       acpi_os_printf("Evaluated %u predefined names in the namespace\n",
+                      info.count);
+}