Em Sat, 27 Jul 2013 10:11:53 -0300 Mauro Carvalho Chehab <m.chehab@xxxxxxxxxxx> escreveu: > Hi Dmitry, > > I received a new notebook those days that has an extra feature of a "Fn Lock" > key. > > When this key is pressed, it produces a scan code 0xa8, and the direction > keys (and other keys) start to produce different codes. When pressed again, > it produces a scan code 0xa9, and the keys return to their normal behavior. > > The input layer doesn't currently produce any EV_KEY event for those two > scancodes. It produces just EV_MSC events (and, of course, EV_SYN). > > I was wandering that the better would be to have a LED indicator to > track this, and maybe have two new keycodes, like KEY_FN_LOCK_ON and > KEY_FN_LOCK_OFF. > > This way, some userspace program, like mate-lockkeys-applet could be > presenting not only the CAPS LOCK indicator, but also the FN LOCK > indicator. > > Do you think it would be doable? > > FYI, this is how this keyboard identifies itself: > > $ cat /sys/class/input/event3/device/uevent > PRODUCT=11/1/1/ab41 > NAME="AT Translated Set 2 keyboard" > PHYS="isa0060/serio0/input0" > PROP=0 > EV=120013 > KEY=500f02000403 3803078f870d001 feffffdffbefffff fffffffffffffffe > MSC=10 > LED=7 > MODALIAS=input:b0011v0001p0001eAB41-e0,1,4,11,14,k71,72,73,74,75,76,77,79,7A,7B,7C,7D,7E,7F,80,8C,8E,8F,94,95,96,9B,9C,9D,9E,9F,A3,A4,A5,A6,AC,AD,B7,B8,B9,C0,C1,CA,D9,E0,E1,E2,E3,EC,EE,ram4,l0,1,2,sfw > > I'm not sure if the PRODUCT there is unique, and if it could be used > to add this kind of extra feature to the input subsystem (or if it would > be just fine to add those extra features at the standard AT keyboard > driver, although I personally don't like this idea, as other keyboards > might be using scancodes 0xa8/0xa9 for other meanings). > > What do you think? Just discovered something weird while trying to write some code for systemd/udev: there are a few keys that only produce key down events: Fn + F1 (KEY_SETUP) Fn + F12 (KEY_WLAN) Fn Lock (both scan codes 0xa8 and 0xa9) See: # ir-keytable -d /dev/input/event3 -t Testing events. Please, press CTRL-C to abort. 1374948216.879719: event type EV_MSC(0x04): scancode = 0xce 1374948216.879719: event type EV_KEY(0x01) key_down: KEY_SETUP(0x0001) 1374948216.879719: event type EV_SYN(0x00). 1374948218.420177: event type EV_MSC(0x04): scancode = 0xce 1374948218.420177: event type EV_KEY(0x01) key_down: KEY_SETUP(0x0001) 1374948218.420177: event type EV_SYN(0x00). 1374948219.362185: event type EV_MSC(0x04): scancode = 0x89 1374948219.362185: event type EV_KEY(0x01) key_down: KEY_BRIGHTNESSDOWN(0x0001) 1374948219.362185: event type EV_SYN(0x00). 1374948219.362218: event type EV_KEY(0x01) key_up: KEY_BRIGHTNESSDOWN(0x0001) 1374948219.362218: event type EV_SYN(0x00). 1374948222.746160: event type EV_MSC(0x04): scancode = 0xce 1374948222.746160: event type EV_KEY(0x01) key_down: KEY_SETUP(0x0001) 1374948222.746160: event type EV_SYN(0x00). 1374948223.348321: event type EV_MSC(0x04): scancode = 0x89 1374948223.348321: event type EV_KEY(0x01) key_down: KEY_BRIGHTNESSDOWN(0x0001) 1374948223.348321: event type EV_SYN(0x00). 1374948223.348356: event type EV_KEY(0x01) key_up: KEY_BRIGHTNESSDOWN(0x0001) 1374948223.348356: event type EV_SYN(0x00). 1374948224.864993: event type EV_MSC(0x04): scancode = 0xce 1374948224.864993: event type EV_KEY(0x01) key_down: KEY_SETUP(0x0001) 1374948224.864993: event type EV_SYN(0x00). 1374948227.762895: event type EV_MSC(0x04): scancode = 0x82 1374948227.762895: event type EV_KEY(0x01) key_down: KEY_SWITCHVIDEOMODE(0x0001) 1374948227.762895: event type EV_SYN(0x00). 1374948227.762930: event type EV_KEY(0x01) key_up: KEY_SWITCHVIDEOMODE(0x0001) 1374948227.762930: event type EV_SYN(0x00). 1374948229.212478: event type EV_MSC(0x04): scancode = 0x82 1374948229.212478: event type EV_KEY(0x01) key_down: KEY_SWITCHVIDEOMODE(0x0001) 1374948229.212478: event type EV_SYN(0x00). 1374948229.212513: event type EV_KEY(0x01) key_up: KEY_SWITCHVIDEOMODE(0x0001) 1374948229.212513: event type EV_SYN(0x00). 1374948232.961500: event type EV_MSC(0x04): scancode = 0xd5 1374948232.961500: event type EV_KEY(0x01) key_down: KEY_WLAN(0x0001) 1374948232.961500: event type EV_SYN(0x00). 1374948234.377876: event type EV_MSC(0x04): scancode = 0xd5 1374948234.377876: event type EV_KEY(0x01) key_down: KEY_WLAN(0x0001) 1374948234.377876: event type EV_SYN(0x00). 1374948235.090077: event type EV_MSC(0x04): scancode = 0xa8 1374948235.090077: event type EV_KEY(0x01) key_down: KEY_PROG1(0x0001) 1374948235.090077: event type EV_SYN(0x00). 1374948236.650001: event type EV_MSC(0x04): scancode = 0xa9 1374948236.650001: event type EV_KEY(0x01) key_down: KEY_PROG2(0x0001) 1374948236.650001: event type EV_SYN(0x00). 1374948237.094992: event type EV_MSC(0x04): scancode = 0xb7 1374948237.094992: event type EV_KEY(0x01) key_down: KEY_SYSRQ(0x0001) 1374948237.094992: event type EV_SYN(0x00). 1374948237.213233: event type EV_MSC(0x04): scancode = 0xb7 1374948237.213233: event type EV_KEY(0x01) key_up: KEY_SYSRQ(0x0001) 1374948237.213233: event type EV_SYN(0x00). 1374948247.126649: event type EV_MSC(0x04): scancode = 0xb7 1374948247.126649: event type EV_KEY(0x01) key_down: KEY_SYSRQ(0x0001) 1374948247.126649: event type EV_SYN(0x00). 1374948247.299130: event type EV_MSC(0x04): scancode = 0xb7 1374948247.299130: event type EV_KEY(0x01) key_up: KEY_SYSRQ(0x0001) 1374948247.299130: event type EV_SYN(0x00). 1374948249.158131: event type EV_MSC(0x04): scancode = 0xb7 1374948249.158131: event type EV_KEY(0x01) key_down: KEY_SYSRQ(0x0001) 1374948249.158131: event type EV_SYN(0x00). 1374948249.294389: event type EV_MSC(0x04): scancode = 0xb7 1374948249.294389: event type EV_KEY(0x01) key_up: KEY_SYSRQ(0x0001) 1374948249.294389: event type EV_SYN(0x00). 1374948250.904246: event type EV_MSC(0x04): scancode = 0xa8 1374948250.904246: event type EV_KEY(0x01) key_down: KEY_PROG1(0x0001) 1374948250.904246: event type EV_SYN(0x00). 1374948252.938739: event type EV_MSC(0x04): scancode = 0xa9 1374948252.938739: event type EV_KEY(0x01) key_down: KEY_PROG2(0x0001) 1374948252.938739: event type EV_SYN(0x00). So, perhaps some quirk will be needed at the Kernel driver to artificially produce KEYUP events for those scancodes. Cheers, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
