From patchwork Wed Oct 3 11:34:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arun Kumar Neelakantam X-Patchwork-Id: 10624651 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 434E314BD for ; Wed, 3 Oct 2018 11:35:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 36735287C3 for ; Wed, 3 Oct 2018 11:35:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2AF8E287E5; Wed, 3 Oct 2018 11:35:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C620F287C3 for ; Wed, 3 Oct 2018 11:35:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727137AbeJCSXL (ORCPT ); Wed, 3 Oct 2018 14:23:11 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:55364 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726617AbeJCSXK (ORCPT ); Wed, 3 Oct 2018 14:23:10 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id C790960C62; Wed, 3 Oct 2018 11:35:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1538566509; bh=q8HwYztCvotKOrqEFcstvdFfANwvR5OGFj7Il4/+IVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GqqltBA51WMDvB7vknEvRGUsu0nvX0TOEnjHFk+qOx62rP5QsjNOA+rn3IFHBrnss h5tVsatsfK7q+a2wJHtHkF0cR6tk5M3D002QgKdSmjTL8sz+KBchspOZAYATfDy1EE 0NqhAetpU9bs0KxLMrEfYdICQ+gM2jIGBZkIUzos= Received: from aneelaka-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: aneela@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id C8D0460B26; Wed, 3 Oct 2018 11:35:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1538566509; bh=q8HwYztCvotKOrqEFcstvdFfANwvR5OGFj7Il4/+IVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GqqltBA51WMDvB7vknEvRGUsu0nvX0TOEnjHFk+qOx62rP5QsjNOA+rn3IFHBrnss h5tVsatsfK7q+a2wJHtHkF0cR6tk5M3D002QgKdSmjTL8sz+KBchspOZAYATfDy1EE 0NqhAetpU9bs0KxLMrEfYdICQ+gM2jIGBZkIUzos= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org C8D0460B26 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=aneela@codeaurora.org From: Arun Kumar Neelakantam To: ohad@wizery.com, bjorn.andersson@linaro.org, clew@codeaurora.org, sricharan@codeaurora.org Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Arun Kumar Neelakantam Subject: [PATCH 3/5] rpmsg: Add TIOCMGET/TIOCMSET ioctl support Date: Wed, 3 Oct 2018 17:04:21 +0530 Message-Id: <1538566463-24627-4-git-send-email-aneela@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1538566463-24627-1-git-send-email-aneela@codeaurora.org> References: <1538566463-24627-1-git-send-email-aneela@codeaurora.org> Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add TICOMGET and TIOCMSET ioctl support for rpmsg char device nodes to get/set the low level transport signals. Signed-off-by: Arun Kumar Neelakantam --- drivers/rpmsg/rpmsg_char.c | 54 +++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 51 insertions(+), 3 deletions(-) diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c index 86003d5..c983d6c 100644 --- a/drivers/rpmsg/rpmsg_char.c +++ b/drivers/rpmsg/rpmsg_char.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -274,15 +275,62 @@ static __poll_t rpmsg_eptdev_poll(struct file *filp, poll_table *wait) return mask; } +static int rpmsg_eptdev_tiocmset(struct file *fp, unsigned int cmd, + unsigned long arg) +{ + struct rpmsg_eptdev *eptdev = fp->private_data; + u32 lsigs, rsigs, val; + int ret; + + ret = get_user(val, (u32 *)arg); + if (ret) + return ret; + + ret = rpmsg_get_sigs(eptdev->ept, &lsigs, &rsigs); + if (ret < 0) + return ret; + + switch (cmd) { + case TIOCMBIS: + lsigs |= val; + break; + case TIOCMBIC: + lsigs &= ~val; + break; + case TIOCMSET: + lsigs = val; + break; + } + + ret = rpmsg_set_sigs(eptdev->ept, lsigs); + return ret; +} + static long rpmsg_eptdev_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) { struct rpmsg_eptdev *eptdev = fp->private_data; + u32 lsigs, rsigs; + int ret; - if (cmd != RPMSG_DESTROY_EPT_IOCTL) - return -EINVAL; + switch (cmd) { + case TIOCMGET: + ret = rpmsg_get_sigs(eptdev->ept, &lsigs, &rsigs); + if (!ret) + ret = put_user(rsigs, (u32 *)arg); + break; + case TIOCMSET: + case TIOCMBIS: + case TIOCMBIC: + ret = rpmsg_eptdev_tiocmset(fp, cmd, arg); + break; + case RPMSG_DESTROY_EPT_IOCTL: + ret = rpmsg_eptdev_destroy(&eptdev->dev, NULL); + default: + ret = -EINVAL; + } - return rpmsg_eptdev_destroy(&eptdev->dev, NULL); + return ret; } static const struct file_operations rpmsg_eptdev_fops = {