HCI_TR_BACKLIGHT 1294 drivers/platform/x86/toshiba_acpi.c 	u32 result = hci_read(dev, HCI_TR_BACKLIGHT, status);
HCI_TR_BACKLIGHT 1306 drivers/platform/x86/toshiba_acpi.c 	u32 result = hci_write(dev, HCI_TR_BACKLIGHT, !status);