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Date: Mon, 04 Jun 2018 13:12:07 +0300 From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> To: Giulio Benetti <giulio.benetti@...ronovasrl.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Matwey V.Kornilov" <matwey@....msu.ru> Cc: Jiri Slaby <jslaby@...e.com>, Kees Cook <keescook@...omium.org>, Matthias Brugger <mbrugger@...e.com>, Allen Pais <allen.lkml@...il.com>, Sean Young <sean@...s.org>, Ed Blake <ed.blake@...drel.com>, Stefan Potyra <Stefan.Potyra@...ktrobit.com>, Philipp Zabel <p.zabel@...gutronix.de>, Joshua Scott <joshua.scott@...iedtelesis.co.nz>, Vignesh R <vigneshr@...com>, Rolf Evers-Fischer <rolf.evers.fischer@...iv.com>, Aaron Sierra <asierra@...-inc.com>, Rafael Gago <rafael.gago@...il.com>, Joel Stanley <joel@....id.au>, Sean Wang <sean.wang@...iatek.com>, linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 0/8] serial: 8250: Add 485 emulation to 8250_dw. 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@...ux.intel.com> Intel Finland Oy
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