parport_negotiate — negotiate an IEEE 1284 mode
|struct parport * port,|
Use this to negotiate to a particular IEEE 1284 transfer mode.
mode parameter should be one of the constants in
The return value is 0 if the peripheral has accepted the negotiation to the mode specified, -1 if the peripheral is not IEEE 1284 compliant (or not present), or 1 if the peripheral has rejected the negotiation.