Hi Andy,
Il 18/05/2020 17:21, Andy Shevchenko ha scritto:
On Sun, May 17, 2020 at 11:56:10PM +0200, Heiko Stuebner wrote:
From: Giulio Benetti <giulio.bene...@micronovasrl.com>
Need to use rs485 transceiver so let's use existing em485 485 emulation
layer on top of 8250.
Add rs485_config callback to port and uses the standard em485 start and
stop helpers.
Would it prevent to use native RS485 support?
8250_dw doesn't have a native RS485 support, do you mean using hardware
RTS assertion? Anyway at the moment it's not present. This would be the
first rs485 support added to 8250_dw.
Best regards
--
Giulio Benetti
CTO
MICRONOVA SRL
Sede: Via A. Niedda 3 - 35010 Vigonza (PD)
Tel. 049/8931563 - Fax 049/8931346
Cod.Fiscale - P.IVA 02663420285
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Numero R.E.A. 258642
...
p->serial_out = dw8250_serial_out;
p->set_ldisc = dw8250_set_ldisc;
p->set_termios = dw8250_set_termios;
+ p->rs485_config = serial8250_em485_config;
+ up->rs485_start_tx = serial8250_em485_start_tx;
+ up->rs485_stop_tx = serial8250_em485_stop_tx;
