Daniel Vetter wrote: > On Fri, Apr 19, 2013 at 10:41:50AM +0200, "David M?ller (ELSOFT AG)" wrote: >> + /* GMBUS NAK handling seems to be unstable, hence let the >> + * transmitter detection run in bit banging mode for now. >> + */ >> + intel_gmbus_force_bit(i2c, true); >> + >> + dvoinit = dvo->dev_ops->init(&intel_dvo->dev, i2c); >> + >> + intel_gmbus_force_bit(i2c, false); > > Shouldn't we keep the dvo i2c line in bit-banging mode always, i.e. > restore gmbus mode only when dvo init failed? > > I suspect that for fickle hw not just init will fail ...
As far as i can tell, the critical part is the NAK handling. Dave
