On Mon, Apr 25, 2022 at 05:34:01PM +0300, Ilpo Järvinen wrote: > The Synopsys DesignWare UART can be configured to have HW support for > the RS485 protocol from IP version 4.0 onward. Add support for > hardware-controlled half duplex and full duplex modes. > > HW will take care of managing DE and RE, the driver just gives it > permission to use either by setting both to 1. > > To ask for full duplex mode, userspace sets SER_RS485_RX_DURING_TX flag > and HW will take care of the rest. > > Set delay_rts_before_send and delay_rts_after_send to zero for now. The > granularity of that ABI is too coarse to be useful. > > Co-developed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > Co-developed-by: Raymond Tan <raymond.tan@xxxxxxxxx> > Signed-off-by: Raymond Tan <raymond.tan@xxxxxxxxx> > Co-developed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> > --- > drivers/tty/serial/8250/8250_dwlib.c | 85 +++++++++++++++++++++++++++- > drivers/tty/serial/8250/8250_dwlib.h | 3 + > 2 files changed, 86 insertions(+), 2 deletions(-) This commit fails to apply to my tree. Can you rebase this and the rest and resend? thanks, greg k-h
