From patchwork Tue Nov 2 07:05:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 12597951 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 487F7C433EF for ; Tue, 2 Nov 2021 07:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 267A360F02 for ; Tue, 2 Nov 2021 07:06:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229849AbhKBHIk (ORCPT ); Tue, 2 Nov 2021 03:08:40 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:55951 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230140AbhKBHIj (ORCPT ); Tue, 2 Nov 2021 03:08:39 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1635836764; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=5fEtNBfMOPuQvrIufJ+iE7zhzDqTILQAqeScWkbv0Rg=; b=pK/nCdqg5T91f4epB03AnpIqHuF0wb7P76RaKwcuUqCbp5JBTfTV3JHF9pptC+tX0n2+FYB2 JqtUUgd4NlmMjSRJClf6RND8E3DEUg41VI9l6Jx9uwLSDCWi90tnjDKtA1VURgi3NK8j2BVg 709db6mPwy0YdDvi/jjQ4d4Djjs= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI2MTA3ZSIsICJsaW51eC1ibHVldG9vdGhAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-west-2.postgun.com with SMTP id 6180e32b648aeeca5c45cb7b (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 02 Nov 2021 07:05:15 GMT Sender: zijuhu=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 5DA17C43616; Tue, 2 Nov 2021 07:05:15 +0000 (UTC) Received: from zijuhu-gv.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: zijuhu) by smtp.codeaurora.org (Postfix) with ESMTPSA id 6C9F2C4338F; Tue, 2 Nov 2021 07:05:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org 6C9F2C4338F Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Zijun Hu To: robh@kernel.org, gregkh@linuxfoundation.org, jirislaby@kernel.org Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, zijuhu@codeaurora.org, Zijun Hu Subject: [PATCH v1 1/3] serdev: Add interface serdev_device_ioctl Date: Tue, 2 Nov 2021 15:05:07 +0800 Message-Id: <1635836707-29341-1-git-send-email-zijuhu@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Zijun Hu For serdev_device which is mounted at virtual tty port, tty ioctl() maybe be used to make serdev_device ready to talk with tty port, so add interface serdev_device_ioctl(). Signed-off-by: Zijun Hu --- drivers/tty/serdev/core.c | 13 +++++++++++++ drivers/tty/serdev/serdev-ttyport.c | 12 ++++++++++++ include/linux/serdev.h | 9 +++++++++ 3 files changed, 34 insertions(+) diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c index f1324fe99378..dee934203277 100644 --- a/drivers/tty/serdev/core.c +++ b/drivers/tty/serdev/core.c @@ -405,6 +405,19 @@ int serdev_device_set_tiocm(struct serdev_device *serdev, int set, int clear) } EXPORT_SYMBOL_GPL(serdev_device_set_tiocm); +int serdev_device_ioctl(struct serdev_device *serdev, unsigned int cmd, unsigned long arg) +{ + struct serdev_controller *ctrl = serdev->ctrl; + + if (!ctrl) + return -ENOTTY; + else if (!ctrl->ops->ioctl) + return -ENOSYS; + else + return ctrl->ops->ioctl(ctrl, cmd, arg); +} +EXPORT_SYMBOL_GPL(serdev_device_ioctl); + static int serdev_drv_probe(struct device *dev) { const struct serdev_device_driver *sdrv = to_serdev_device_driver(dev->driver); diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c index d367803e2044..66afad1eb1b7 100644 --- a/drivers/tty/serdev/serdev-ttyport.c +++ b/drivers/tty/serdev/serdev-ttyport.c @@ -247,6 +247,17 @@ static int ttyport_set_tiocm(struct serdev_controller *ctrl, unsigned int set, u return tty->ops->tiocmset(tty, set, clear); } +static int ttyport_ioctl(struct serdev_controller *ctrl, unsigned int cmd, unsigned long arg) +{ + struct serport *serport = serdev_controller_get_drvdata(ctrl); + struct tty_struct *tty = serport->tty; + + if (!tty->ops->ioctl) + return -ENOSYS; + + return tty->ops->ioctl(tty, cmd, arg); +} + static const struct serdev_controller_ops ctrl_ops = { .write_buf = ttyport_write_buf, .write_flush = ttyport_write_flush, @@ -259,6 +270,7 @@ static const struct serdev_controller_ops ctrl_ops = { .wait_until_sent = ttyport_wait_until_sent, .get_tiocm = ttyport_get_tiocm, .set_tiocm = ttyport_set_tiocm, + .ioctl = ttyport_ioctl, }; struct device *serdev_tty_port_register(struct tty_port *port, diff --git a/include/linux/serdev.h b/include/linux/serdev.h index 3368c261ab62..5804201fafb2 100644 --- a/include/linux/serdev.h +++ b/include/linux/serdev.h @@ -91,6 +91,7 @@ struct serdev_controller_ops { void (*wait_until_sent)(struct serdev_controller *, long); int (*get_tiocm)(struct serdev_controller *); int (*set_tiocm)(struct serdev_controller *, unsigned int, unsigned int); + int (*ioctl)(struct serdev_controller *ctrl, unsigned int cmd, unsigned long arg); }; /** @@ -201,6 +202,7 @@ int serdev_device_write_buf(struct serdev_device *, const unsigned char *, size_ void serdev_device_wait_until_sent(struct serdev_device *, long); int serdev_device_get_tiocm(struct serdev_device *); int serdev_device_set_tiocm(struct serdev_device *, int, int); +int serdev_device_ioctl(struct serdev_device *serdev, unsigned int cmd, unsigned long arg); void serdev_device_write_wakeup(struct serdev_device *); int serdev_device_write(struct serdev_device *, const unsigned char *, size_t, long); void serdev_device_write_flush(struct serdev_device *); @@ -254,6 +256,13 @@ static inline int serdev_device_set_tiocm(struct serdev_device *serdev, int set, { return -ENOTSUPP; } + +static inline int serdev_device_ioctl(struct serdev_device *serdev, + unsigned int cmd, unsigned long arg) +{ + return -ENOSYS; +} + static inline int serdev_device_write(struct serdev_device *sdev, const unsigned char *buf, size_t count, unsigned long timeout) {