From patchwork Mon Jul 25 11:51:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kandziora X-Patchwork-Id: 652239 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3ryfjJ2BTtz9ssP for ; Mon, 25 Jul 2016 21:51:16 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751683AbcGYLvP (ORCPT ); Mon, 25 Jul 2016 07:51:15 -0400 Received: from mout.gmx.net ([212.227.15.19]:55448 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751648AbcGYLvO (ORCPT ); Mon, 25 Jul 2016 07:51:14 -0400 Received: from [10.0.0.99] ([79.242.230.215]) by mail.gmx.com (mrgmx003) with ESMTPSA (Nemesis) id 0MhRUQ-1bfJgS28gM-00Md0m; Mon, 25 Jul 2016 13:51:10 +0200 From: Jan Kandziora Subject: [PATCH v2 1/2] wire: export w1_touch_bit To: Wolfram Sang Cc: linux-i2c@vger.kernel.org Message-ID: <5795FD2D.2010800@gmx.de> Date: Mon, 25 Jul 2016 13:51:09 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.0 MIME-Version: 1.0 X-Provags-ID: V03:K0:UJea/oDy/rL001CPnvbpKxOugBTJYniMTaV3NjBnLXPpxrJGclK LkkfB+eAxe37Wn9rKpExPxPjJ1NxQ/fZRTRgDFLSZukHplXaWwzSe39LpjpZtC737o01IIC otUouWGuxTAv0i9Pl7Tqrbz+8GweCrk5DMVBhlUmDJxVWIPaNCM0Dba7JfVXGGISNIAgBTP BhT23YPla2yl0po9ULKPg== X-UI-Out-Filterresults: notjunk:1; V01:K0:PmLHZGxe9Vk=:DIg/tirH7tHX/CP5jhAqX+ 3VeCyFUTlMD9ge7UPvR8Gcgm9cjOku3dpv4UJ8XuWviIppucMySzAfC/Hc0pwVajAUEA1m36V DMHsPHIpQHHWkceozyEo/fwQFZNj6yZ+/uRB5Pk8/8vSvRLfEH+VFtUoBXZs9W19+DEZBv7gw pdeBhGorbUgGdkRoDnU5l9rtiwVGZ8IR9vbWVIvr4KzBPXwvHj6pe2/nHXnqgsh6jvfsZ2vN3 vMG9jWzvMqUoQG+xnJjnPcQqgVgeloPoeO7NkUeCF2O0zbou8Jun46bwUlgAadTD8rnjmGuPr bGfTOzLXjWgwJSB1hf0z/3XfOZ+HcWWEhAhu0AE08sCyMi9DTT2IrTH9IS/6UlfP43ZlT9S9e G0WAZ1M5ASu2eoMzxeKTyvA4f1wrnV7AJGgFoynLs6l+OS1QZhMXchvH2oQ4pHwkLkLnenwwN yGCLdSujwRPWvFkVTL56eZ39zj1en2163JUoHCOCFruKfv1ZS7wdKnBNVPrVsylpmWXY40G3W wx9kUEe/wF7lDJl1mJALVk4fDBDVOFs2Ds2Q1/B959iFWxHNjl1ULFcpGa1DqwRHrqqfevICk KL0uPohjBJZ3cLbm5rHVhI0gIgQff1gUY/KJJBZXfU2tkJ41sLQBMtr5sAEr1ZHozaKkYbDLg lUPhppqfM7s90Uz6U+ND3GtCf9+sXu690TnBVQRIliHdopfBQaSNRkts5XWL/PtAKDLTJhab9 K9UVws09eEDQbpMQKKf1+QbvCe11028IFySb/+yqizEl1zXUxZFUw5Hj5uce0bYXX/aTjAzS6 qokMk3L Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org No changes in v2 against v1 in this subpatch. The w1_ds28e17 driver from the next part of this patch needs to emit single-bit read timeslots to the DS28E17. The w1 subsystem already has this function but it is not exported outside drivers/w1/w1_io.c This subpatch exports the w1_touch_bit symbol with EXPORT_SYMBOL_GPL, same as the other exported symbols in drivers/w1/w1_io.c May be also useful later for writing drivers for other Onewire chips which do single-bit communication. Signed-off-by: Jan Kandziora --- drivers/w1/w1.h | 1 + drivers/w1/w1_io.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h index 129895f..ac8a6a5 100644 --- a/drivers/w1/w1.h +++ b/drivers/w1/w1.h @@ -302,6 +302,7 @@ int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn); int w1_slave_detach(struct w1_slave *sl); u8 w1_triplet(struct w1_master *dev, int bdir); +u8 w1_touch_bit(struct w1_master *dev, int bit); void w1_write_8(struct w1_master *, u8); u8 w1_read_8(struct w1_master *); int w1_reset_bus(struct w1_master *); diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c index f4bc8c1..1c34f97 100644 --- a/drivers/w1/w1_io.c +++ b/drivers/w1/w1_io.c @@ -66,7 +66,7 @@ static u8 w1_read_bit(struct w1_master *dev); * @dev: the master device * @bit: 0 - write a 0, 1 - write a 0 read the level */ -static u8 w1_touch_bit(struct w1_master *dev, int bit) +u8 w1_touch_bit(struct w1_master *dev, int bit) { if (dev->bus_master->touch_bit) return dev->bus_master->touch_bit(dev->bus_master->data, bit); @@ -77,6 +77,7 @@ static u8 w1_touch_bit(struct w1_master *dev, int bit) return 0; } } +EXPORT_SYMBOL_GPL(w1_touch_bit); /** * w1_write_bit() - Generates a write-0 or write-1 cycle. -- 2.1.4