From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 194CBC433FF for ; Wed, 14 Aug 2019 07:47:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E10C020843 for ; Wed, 14 Aug 2019 07:47:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727021AbfHNHrV (ORCPT ); Wed, 14 Aug 2019 03:47:21 -0400 Received: from mga09.intel.com ([134.134.136.24]:30572 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725280AbfHNHrS (ORCPT ); Wed, 14 Aug 2019 03:47:18 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Aug 2019 00:47:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,384,1559545200"; d="scan'208";a="188041249" Received: from pipin.fi.intel.com ([10.237.72.175]) by orsmga002.jf.intel.com with ESMTP; 14 Aug 2019 00:47:16 -0700 From: Felipe Balbi To: Richard Cochran Cc: Christopher S Hall , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Felipe Balbi Subject: [PATCH 2/2] PTP: add support for one-shot output Date: Wed, 14 Aug 2019 10:47:12 +0300 Message-Id: <20190814074712.10684-2-felipe.balbi@linux.intel.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190814074712.10684-1-felipe.balbi@linux.intel.com> References: <20190814074712.10684-1-felipe.balbi@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some controllers allow for a one-shot output pulse, in contrast to periodic output. Now that we have extensible versions of our IOCTLs, we can finally make use of the 'flags' field to pass a bit telling driver that if we want one-shot pulse output. Signed-off-by: Felipe Balbi --- drivers/ptp/ptp_chardev.c | 5 ++--- include/uapi/linux/ptp_clock.h | 4 +++- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c index 204212fc3f8c..b75a65880056 100644 --- a/drivers/ptp/ptp_chardev.c +++ b/drivers/ptp/ptp_chardev.c @@ -173,9 +173,8 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg) err = -EFAULT; break; } - if ((req.perout.flags || req.perout.rsv[0] || req.perout.rsv[1] - || req.perout.rsv[2] || req.perout.rsv[3]) - && cmd == PTP_PEROUT_REQUEST2) { + if ((req.perout.rsv[0] || req.perout.rsv[1] || req.perout.rsv[2] + || req.perout.rsv[3]) && cmd == PTP_PEROUT_REQUEST2) { err = -EINVAL; break; } else if (cmd == PTP_PEROUT_REQUEST) { diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h index 039cd62ec706..9412b16cc8ed 100644 --- a/include/uapi/linux/ptp_clock.h +++ b/include/uapi/linux/ptp_clock.h @@ -67,7 +67,9 @@ struct ptp_perout_request { struct ptp_clock_time start; /* Absolute start time. */ struct ptp_clock_time period; /* Desired period, zero means disable. */ unsigned int index; /* Which channel to configure. */ - unsigned int flags; /* Reserved for future use. */ + +#define PTP_PEROUT_ONE_SHOT BIT(0) + unsigned int flags; /* Bit 0 -> oneshot output. */ unsigned int rsv[4]; /* Reserved for future use. */ }; -- 2.22.0