+static acpi_status wmid3_get_device_status(u32 *value, u16 device)
+{
+ struct wmid3_gds_return_value return_value;
+ acpi_status status;
+ union acpi_object *obj;
+ struct wmid3_gds_get_input_param params = {
+ .function_num = 0x1,
+ .hotkey_number = commun_fn_key_number,
+ .devices = device,
+ };
+ struct acpi_buffer input = {
+ sizeof(struct wmid3_gds_get_input_param),
+ ¶ms
+ };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 8) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
+ device,
+ return_value.error_code,
+ return_value.ec_return_value);
+ else
+ *value = !!(return_value.devices & device);
+
+ return status;
+}
+
+static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
+{
+ u16 device;
+
+ switch (cap) {
+ case ACER_CAP_WIRELESS:
+ device = ACER_WMID3_GDS_WIRELESS;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ device = ACER_WMID3_GDS_BLUETOOTH;
+ break;
+ case ACER_CAP_THREEG:
+ device = ACER_WMID3_GDS_THREEG;
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return wmid3_get_device_status(value, device);
+}
+
+static acpi_status wmid3_set_device_status(u32 value, u16 device)
+{
+ struct wmid3_gds_return_value return_value;
+ acpi_status status;
+ union acpi_object *obj;
+ u16 devices;
+ struct wmid3_gds_get_input_param get_params = {
+ .function_num = 0x1,
+ .hotkey_number = commun_fn_key_number,
+ .devices = commun_func_bitmap,
+ };
+ struct acpi_buffer get_input = {
+ sizeof(struct wmid3_gds_get_input_param),
+ &get_params
+ };
+ struct wmid3_gds_set_input_param set_params = {
+ .function_num = 0x2,
+ .hotkey_number = commun_fn_key_number,
+ .devices = commun_func_bitmap,
+ };
+ struct acpi_buffer set_input = {
+ sizeof(struct wmid3_gds_set_input_param),
+ &set_params
+ };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 8) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value) {
+ pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
+ return_value.error_code,
+ return_value.ec_return_value);
+ return status;
+ }
+
+ devices = return_value.devices;
+ set_params.devices = (value) ? (devices | device) : (devices & ~device);
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output2.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 4) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
+ return_value.error_code,
+ return_value.ec_return_value);
+
+ return status;
+}
+
+static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
+{
+ u16 device;
+
+ switch (cap) {
+ case ACER_CAP_WIRELESS:
+ device = ACER_WMID3_GDS_WIRELESS;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ device = ACER_WMID3_GDS_BLUETOOTH;
+ break;
+ case ACER_CAP_THREEG:
+ device = ACER_WMID3_GDS_THREEG;
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return wmid3_set_device_status(value, device);
+}
+