linux-kernel - [PATCH 0/8] serial: 8250: Add 485 emulation to 8250

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Message-Id: <20180601124021.102970-1-giulio.benetti@micronovasrl.com>
Date:   Fri,  1 Jun 2018 14:40:13 +0200
From:   Giulio Benetti <giulio.benetti@...ronovasrl.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Jiri Slaby <jslaby@...e.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.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,
        Giulio Benetti <giulio.benetti@...ronovasrl.com>
Subject: [PATCH 0/8] serial: 8250: Add 485 emulation to 8250_dw.

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.

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(-)

-- 
2.17.0