From patchwork Fri Dec 22 15:07:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 10130681 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B967B60318 for ; Fri, 22 Dec 2017 15:12:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BAE5D2A044 for ; Fri, 22 Dec 2017 15:12:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AF8EE2A05A; Fri, 22 Dec 2017 15:12:37 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable 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 5E6D129FB5 for ; Fri, 22 Dec 2017 15:12:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756414AbdLVPKK (ORCPT ); Fri, 22 Dec 2017 10:10:10 -0500 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:56578 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756381AbdLVPKG (ORCPT ); Fri, 22 Dec 2017 10:10:06 -0500 X-IronPort-AV: E=Sophos;i="5.45,441,1508828400"; d="scan'208";a="10402487" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 22 Dec 2017 08:10:06 -0700 Received: from eh-station.mchp-main.com (10.10.76.4) by chn-sv-exch07.mchp-main.com (10.10.76.108) with Microsoft SMTP Server id 14.3.352.0; Fri, 22 Dec 2017 08:10:04 -0700 From: Eugen Hristev To: , , , , , , , , , CC: Eugen Hristev Subject: [PATCH 06/14] iio: triggers: expose attach and detach helpers for pollfuncs Date: Fri, 22 Dec 2017 17:07:13 +0200 Message-ID: <1513955241-10985-7-git-send-email-eugen.hristev@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1513955241-10985-1-git-send-email-eugen.hristev@microchip.com> References: <1513955241-10985-1-git-send-email-eugen.hristev@microchip.com> MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Make attach and detach functions for pollfuncs available as symbols. These functions are required in the trigger consumer drivers in order to register their own pollfunctions to iio devices. Signed-off-by: Eugen Hristev --- drivers/iio/industrialio-trigger.c | 10 ++++++---- include/linux/iio/trigger_consumer.h | 9 +++++++++ 2 files changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c index cbaa079..8565c92 100644 --- a/drivers/iio/industrialio-trigger.c +++ b/drivers/iio/industrialio-trigger.c @@ -265,8 +265,8 @@ static void iio_trigger_put_irq(struct iio_trigger *trig, int irq) * the relevant function is in there may be the best option. */ /* Worth protecting against double additions? */ -static int iio_trigger_attach_poll_func(struct iio_trigger *trig, - struct iio_poll_func *pf) +int iio_trigger_attach_poll_func(struct iio_trigger *trig, + struct iio_poll_func *pf) { int ret = 0; bool notinuse @@ -312,9 +312,10 @@ static int iio_trigger_attach_poll_func(struct iio_trigger *trig, module_put(pf->indio_dev->driver_module); return ret; } +EXPORT_SYMBOL(iio_trigger_attach_poll_func); -static int iio_trigger_detach_poll_func(struct iio_trigger *trig, - struct iio_poll_func *pf) +int iio_trigger_detach_poll_func(struct iio_trigger *trig, + struct iio_poll_func *pf) { int ret = 0; bool no_other_users @@ -334,6 +335,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig, return ret; } +EXPORT_SYMBOL(iio_trigger_detach_poll_func); irqreturn_t iio_pollfunc_store_time(int irq, void *p) { diff --git a/include/linux/iio/trigger_consumer.h b/include/linux/iio/trigger_consumer.h index c4f8c74..aeefcdb 100644 --- a/include/linux/iio/trigger_consumer.h +++ b/include/linux/iio/trigger_consumer.h @@ -60,4 +60,13 @@ void iio_trigger_notify_done(struct iio_trigger *trig); int iio_triggered_buffer_postenable(struct iio_dev *indio_dev); int iio_triggered_buffer_predisable(struct iio_dev *indio_dev); +/* + * Two functions for the uncommon case when we need to attach or detach + * a specific pollfunc to and from a trigger + */ +int iio_trigger_attach_poll_func(struct iio_trigger *trig, + struct iio_poll_func *pf); + +int iio_trigger_detach_poll_func(struct iio_trigger *trig, + struct iio_poll_func *pf); #endif