From: Joe Perches <joe@perches.com>
To: Arnaud Pouliquen <arnaud.pouliquen@st.com>,
Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>,
linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org,
Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Suman Anna <s-anna@ti.com>,
Fabien DESSENNE <fabien.dessenne@st.com>,
linux-stm32@st-md-mailman.stormreply.com,
Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
xiang xiao <xiaoxiang781216@gmail.com>
Subject: Re: [PATCH v7 2/2] tty: add rpmsg driver
Date: Tue, 24 Mar 2020 10:23:05 -0700 [thread overview]
Message-ID: <1dff1b277e5d2c95ce100a2daff4967f98d074ba.camel@perches.com> (raw)
In-Reply-To: <20200324170407.16470-3-arnaud.pouliquen@st.com>
On Tue, 2020-03-24 at 18:04 +0100, Arnaud Pouliquen wrote:
> This driver exposes a standard TTY interface on top of the rpmsg
> framework through a rpmsg service.
>
> This driver supports multi-instances, offering a /dev/ttyRPMSGx entry
> per rpmsg endpoint.
trivial notes:
> diff --git a/Documentation/serial/tty_rpmsg.rst b/Documentation/serial/tty_rpmsg.rst
[]
> +The rpmsg tty driver implements serial communication on the RPMsg bus to makes possible for user-space programs to send and receive rpmsg messages as a standard tty protocol.
Very long text lines missing newlines?
[]
> +To be compliant with this driver, the remote firmware must create its data end point associated with the "rpmsg-tty-raw" service.
[]
> +To be compatible with this driver, the remote firmware must create or use its end point associated with "rpmsg-tty-ctrl" service, plus a second endpoint for the data flow.
> +On Linux rpmsg_tty probes, the data endpoint address and the CTS (set to disable)
[]
> diff --git a/drivers/tty/rpmsg_tty.c b/drivers/tty/rpmsg_tty.c
[]
> +typedef void (*rpmsg_tty_rx_cb_t)(struct rpmsg_device *, void *, int, void *,
> + u32);
unused typedef?
[]
> +static int __init rpmsg_tty_init(void)
> +{
[]
> + err = tty_register_driver(rpmsg_tty_driver);
> + if (err < 0) {
> + pr_err("Couldn't install rpmsg tty driver: err %d\n", err);
> + goto error_put;
> + }
Might use vsprintf extension %pe
pr_err("Couldn't install rpmsg tty driver: %pe\n", ERR_PTR(err));
> + err = register_rpmsg_driver(&rpmsg_tty_rpmsg_drv);
> + if (err < 0) {
> + pr_err("Couldn't register rpmsg tty driver: err %d\n", err);
etc.
next prev parent reply other threads:[~2020-03-24 17:23 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-24 17:04 [PATCH v7 0/2] Add rpmsg tty driver Arnaud Pouliquen
2020-03-24 17:04 ` [PATCH v7 1/2] rpmsg: core: add API to get MTU Arnaud Pouliquen
2020-03-31 17:36 ` Mathieu Poirier
2020-04-01 6:28 ` Jiri Slaby
2020-04-01 6:29 ` Jiri Slaby
2020-04-01 11:34 ` Arnaud POULIQUEN
2020-03-24 17:04 ` [PATCH v7 2/2] tty: add rpmsg driver Arnaud Pouliquen
2020-03-24 17:18 ` Greg Kroah-Hartman
2020-03-25 11:34 ` Arnaud POULIQUEN
2020-03-24 17:23 ` Joe Perches [this message]
2020-03-25 11:36 ` Arnaud POULIQUEN
2020-03-24 17:44 ` Randy Dunlap
2020-03-25 8:10 ` Jiri Slaby
2020-03-25 11:39 ` Arnaud POULIQUEN
2020-03-24 20:52 ` Bjorn Andersson
2020-03-25 16:57 ` Arnaud POULIQUEN
2020-04-06 14:18 ` Arnaud POULIQUEN
2020-04-06 14:18 ` Arnaud POULIQUEN
2020-05-06 2:54 ` Bjorn Andersson
2020-05-06 10:21 ` Arnaud POULIQUEN
2020-03-25 8:45 ` Jiri Slaby
2020-03-25 13:15 ` Arnaud POULIQUEN
2020-03-25 13:31 ` Jiri Slaby
2020-03-26 0:01 ` Joe Perches
2020-03-26 6:38 ` Jiri Slaby
2020-03-26 10:59 ` Arnaud POULIQUEN
2020-03-26 12:31 ` Jiri Slaby
2020-03-26 11:40 ` Arnaud POULIQUEN
2020-03-26 11:45 ` Jiri Slaby
2020-04-01 18:06 ` Mathieu Poirier
2020-04-02 15:25 ` Arnaud POULIQUEN
2020-04-03 20:18 ` Mathieu Poirier
2020-07-15 16:06 ` [PATCH v7 0/2] Add rpmsg tty driver Arnaud POULIQUEN
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