Re: [PATCH 0/8] serial: 8250: Add 485 emulation to 8250_dw.

[Andy Shevchenko]

On Fri, 2018-06-01 at 14:40 +0200, Giulio Benetti wrote:
> Need to handle rs485 with 8250_dw port.
> 
> Use existing em485 emulation layer for 8250 taking care to fix some
> bug
> and taking care especially of RTS_AFTER_SEND case.
> 

I don't see in Cc list author of rs485 code, who might be interested in
this.

So, added him here.

> Giulio Benetti (8):
>   serial: 8250_dw: add em485 support
>   serial: 8250_dw: allow enable rs485 at boot time
>   serial: 8250: Copy em485 from port to real port.
>   serial: 8250: Handle case port doesn't have TEMT interrupt using
>     em485.
>   serial: 8250_dw: treat rpm suspend with -EBUSY if RS485 ON and
>     RTS_AFTER_SEND
>   serial: 8250: Copy mctrl when register port.
>   serial: 8250: Make em485_rts_after_send() set mctrl according to rts
>     state.
>   serial: core: Mask mctrl with TIOCM_RTS too if rs485 on and
>     RTS_AFTER_SEND set.
> 
>  drivers/tty/serial/8250/8250.h      |  2 +-
>  drivers/tty/serial/8250/8250_core.c |  2 ++
>  drivers/tty/serial/8250/8250_dw.c   | 41
> ++++++++++++++++++++++++++++-
>  drivers/tty/serial/8250/8250_omap.c |  2 +-
>  drivers/tty/serial/8250/8250_port.c | 33 ++++++++++++++++-------
>  drivers/tty/serial/serial_core.c    | 12 ++++++++-
>  include/linux/serial_8250.h         |  1 +
>  7 files changed, 79 insertions(+), 14 deletions(-)
> 

-- 
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy