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X-IronPort-AV: E=McAfee;i="6600,9927,10962"; a="401529937" X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="401529937" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2024 07:15:12 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="2072375" Received: from ijarvine-desk1.ger.corp.intel.com (HELO localhost) ([10.246.48.46]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2024 07:15:06 -0800 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Date: Wed, 24 Jan 2024 17:15:01 +0200 (EET) To: Frank Li cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, devicetree@vger.kernel.org, gregkh@linuxfoundation.org, imx@lists.linux.dev, jirislaby@kernel.org, joe@perches.com, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, miquel.raynal@bootlin.com, robh@kernel.org, zbigniew.lukwinski@linux.intel.com Subject: Re: [PATCH v4 6/8] i3c: target: func: add tty driver In-Reply-To: <20240123231043.3891847-7-Frank.Li@nxp.com> Message-ID: <744bf8d6-48a3-81b4-baa8-d8c06500a971@linux.intel.com> References: <20240123231043.3891847-1-Frank.Li@nxp.com> <20240123231043.3891847-7-Frank.Li@nxp.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240124_071513_917015_7333F7FB X-CRM114-Status: GOOD ( 14.98 ) X-Mailman-Approved-At: Sat, 27 Jan 2024 11:52:56 -0800 X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On Tue, 23 Jan 2024, Frank Li wrote: > Add tty over I3C target function driver. > > Signed-off-by: Frank Li > diff --git a/drivers/i3c/func/tty.c b/drivers/i3c/func/tty.c > new file mode 100644 > index 0000000000000..bad99c08be0ac > --- /dev/null > +++ b/drivers/i3c/func/tty.c > @@ -0,0 +1,475 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2023 NXP > + * Author: Frank Li > + */ > + > +#include > +#include > +#include > +#include > +#include > + > +static DEFINE_IDR(i3c_tty_minors); > + > +static struct tty_driver *i3c_tty_driver; > + > +#define I3C_TTY_MINORS 8 > + > +#define I3C_TX_NOEMPTY BIT(0) > +#define I3C_TTY_TRANS_SIZE 16 > +#define I3C_TTY_IBI_TX BIT(0) Lacking #include for BIT() > + do { > + req = i3c_target_ctrl_alloc_request(func->ctrl, GFP_KERNEL); > + if (!req) > + goto err_alloc_req; > + > + req->buf = (void *) (sport->buffer + offset); Casting to void is unnecessary. > + req->length = rxfifo_size; > + req->context = sport; > + req->complete = i3c_target_tty_rx_complete; > + offset += rxfifo_size; > + > + if (i3c_target_ctrl_queue(req, GFP_KERNEL)) > + goto err_alloc_req; > + } while (req && (offset + rxfifo_size) < UART_XMIT_SIZE); Extra (). > +static void i3c_port_shutdown(struct tty_port *port) > +{ > + struct ttyi3c_port *sport = > + container_of(port, struct ttyi3c_port, port); Just put this to a single line, nothing important is lost even on 80 char screen. > +static void i3c_port_destruct(struct tty_port *port) > +{ > + struct ttyi3c_port *sport = > + container_of(port, struct ttyi3c_port, port); Ditto. > + if (i3c_target_ctrl_set_config(func->ctrl, func)) { > + dev_err(&func->dev, "failure set i3c config\n"); failed to set i3c config > + read_poll_timeout(i3c_target_ctrl_fifo_status, val, !val, 100, timeout, false, > + sport->i3cdev->ctrl, true); > + > + i3c_target_ctrl_set_status_format1(sport->i3cdev->ctrl, sport->status & (~I3C_TX_NOEMPTY)); Unnecessary (). -- i. -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c