On Sat, Apr 29, 2017 at 10:44:58AM +0200, David Härdeman wrote: > >This can be implemented without breaking userspace. > > How? The current keymaps we have do not specify the protocol variant, only the protocol (rc6 vs rc6-mce). So to support this, we have to be able to specify multiple protocols at the same time. So I think the protocol should be a bitmask. Also, in your example you re-used RC_TYPE_OTHER to match any protocol; I don't think that is a good solution since there are already keymaps which use other. So if we have an "struct rc_scancode" which looks like: struct rc_scancode { u64 protocol; u64 scancode; }; Then if the keymap protocol is rc6, ir-keytable should set the protocol to RC_BIT_RC6_0 | RC_BIT_RC6_6A_20 | RC_BIT_RC6_6A_24 | RC_BIT_RC6_6A_32 | RC_BIT_RC6_MCE. If the old ioctl is used, then the protocol should be set to RC_BIT_ALL. I can't think of anything what would break with this scheme. Thanks Sean