+
+error:
+ toshiba_acpi_remove(acpi_dev, 0);
+ return ret;
+}
+
+static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
+{
+ struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
+ u32 hci_result, value;
+
+ if (event != 0x80)
+ return;
+ do {
+ hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ if (value == 0x100)
+ continue;
+ /* act on key press; ignore key release */
+ if (value & 0x80)
+ continue;
+
+ if (!sparse_keymap_report_event(dev->hotkey_dev,
+ value, 1, true)) {
+ pr_info("Unknown key %x\n",
+ value);
+ }
+ } else if (hci_result == HCI_NOT_SUPPORTED) {
+ /* This is a workaround for an unresolved issue on
+ * some machines where system events sporadically
+ * become disabled. */
+ hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
+ pr_notice("Re-enabled hotkeys\n");
+ }
+ } while (hci_result != HCI_EMPTY);
+}
+
+
+static struct acpi_driver toshiba_acpi_driver = {
+ .name = "Toshiba ACPI driver",
+ .owner = THIS_MODULE,
+ .ids = toshiba_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
+ .ops = {
+ .add = toshiba_acpi_add,
+ .remove = toshiba_acpi_remove,
+ .notify = toshiba_acpi_notify,
+ },
+};
+
+static int __init toshiba_acpi_init(void)
+{
+ int ret;
+
+ toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
+ if (!toshiba_proc_dir) {
+ pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
+ return -ENODEV;
+ }
+
+ ret = acpi_bus_register_driver(&toshiba_acpi_driver);
+ if (ret) {
+ pr_err("Failed to register ACPI driver: %d\n", ret);
+ remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+ }
+
+ return ret;
+}
+
+static void __exit toshiba_acpi_exit(void)
+{
+ acpi_bus_unregister_driver(&toshiba_acpi_driver);
+ if (toshiba_proc_dir)
+ remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);