On Thu, Jan 04, 2018 at 10:29:20AM +0800, Ji-Ze Hong (Peter Hong) wrote: > The F81532/534 can be disable port by manufacturer with > following H/W design. > 1: Connect DCD/DSR/CTS/RI pin to ground. > 2: Connect RX pin to ground. > > In driver, we'll implements some detect method likes following: > 1: Read MSR. > 2: Turn MCR LOOP bit on, off and read LSR after delay with 60ms. > It'll contain BREAK status in LSR. > > Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@xxxxxxxxx> > --- > V2: > 1: f81534_check_port_hw_disabled() change return type from int to bool. > 2: Add help function f81534_set_phy_port_register() / > f81534_get_phy_port_register() for f81534_check_port_hw_disabled() > to read register without port. > 3: Re-write f81534_calc_num_ports() & f81534_attach() to reduce the > f81534_check_port_hw_disabled() repeatedly called. This looks good, but please split up the config-data-readout refactoring and f81534_check_port_hw_disabled() changes in two patches. Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
