From: Heiko Stuebner <heiko@sntech.de>
To: gregkh@linuxfoundation.org
Cc: jslaby@suse.com, andriy.shevchenko@linux.intel.com,
matwey.kornilov@gmail.com, giulio.benetti@micronovasrl.com,
lukas@wunner.de, linux-serial@vger.kernel.org,
linux-kernel@vger.kernel.org,
christoph.muellner@theobroma-systems.com, heiko@sntech.de,
Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Subject: [PATCH v3 5/5] serial: 8250_dw: add em485 support
Date: Sun, 17 May 2020 23:56:10 +0200 [thread overview]
Message-ID: <20200517215610.2131618-6-heiko@sntech.de> (raw)
In-Reply-To: <20200517215610.2131618-1-heiko@sntech.de>
From: Giulio Benetti <giulio.benetti@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.
Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
[moved to use newly added start/stop helpers]
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
---
drivers/tty/serial/8250/8250_dw.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 51a7d3b19b39..36d364268a45 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -415,6 +415,9 @@ static int dw8250_probe(struct platform_device *pdev)
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;
p->membase = devm_ioremap(dev, regs->start, resource_size(regs));
if (!p->membase)
--
2.25.1
next prev parent reply other threads:[~2020-05-17 21:56 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-17 21:56 [PATCH v3 0/5] serial: 8250: Add rs485 emulation to 8250_dw Heiko Stuebner
2020-05-17 21:56 ` [PATCH v3 1/5] serial: 8520_port: Fix function param documentation Heiko Stuebner
2020-05-18 15:09 ` Andy Shevchenko
2020-05-17 21:56 ` [PATCH v3 2/5] dt-bindings: serial: Add binding for rs485 receiver enable GPIO Heiko Stuebner
2020-05-17 21:56 ` [PATCH v3 3/5] serial: 8250: Support separate rs485 rx-enable GPIO Heiko Stuebner
2020-05-18 4:50 ` Lukas Wunner
2020-05-18 8:04 ` Heiko Stübner
2020-05-18 9:19 ` Lukas Wunner
2020-05-18 15:12 ` Andy Shevchenko
2020-05-18 15:22 ` Lukas Wunner
2020-05-18 15:24 ` Lukas Wunner
2020-05-18 16:13 ` Maarten Brock
2020-05-18 16:35 ` Andy Shevchenko
2020-05-18 17:05 ` Maarten Brock
2020-05-18 17:16 ` Andy Shevchenko
2024-01-24 10:29 ` Farouk Bouabid
2020-05-17 21:56 ` [PATCH v3 4/5] serial: 8250: Handle implementations not having TEMT interrupt using em485 Heiko Stuebner
2020-05-18 15:19 ` Andy Shevchenko
2020-05-17 21:56 ` Heiko Stuebner [this message]
2020-05-18 15:21 ` [PATCH v3 5/5] serial: 8250_dw: add em485 support Andy Shevchenko
2021-02-02 0:31 ` Giulio Benetti
2021-02-02 11:22 ` Andy Shevchenko
2021-02-05 17:46 ` Giulio Benetti
2021-02-05 19:29 ` Andy Shevchenko
2022-09-22 9:56 ` [PATCH v3 0/5] serial: 8250: Add rs485 emulation to 8250_dw Lukas Wunner
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