From patchwork Sat Jul 16 20:15:27 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kandziora X-Patchwork-Id: 649163 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 3rsLKM0zzGz9s6r for ; Sun, 17 Jul 2016 06:15:34 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751732AbcGPUPc (ORCPT ); Sat, 16 Jul 2016 16:15:32 -0400 Received: from mout.gmx.net ([212.227.17.21]:55156 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751666AbcGPUPb (ORCPT ); Sat, 16 Jul 2016 16:15:31 -0400 Received: from [10.0.0.99] ([62.227.255.92]) by mail.gmx.com (mrgmx103) with ESMTPSA (Nemesis) id 0MHH3P-1bbSQe48DD-00E2G1; Sat, 16 Jul 2016 22:15:28 +0200 To: Wolfram Sang , Evgeniy Polyakov From: Jan Kandziora Subject: [PATCH 1/2] wire: export w1_touch_bit Cc: linux-i2c@vger.kernel.org Message-ID: <578A95DF.6070908@gmx.de> Date: Sat, 16 Jul 2016 22:15:27 +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:wqVrtlK40A2HuYIJNbcy+vlDdUYQBLr60cQPmTENDnRkmkQLQIc cZiP2JRcrZdXJt+WzlZ5Iq5zU0ePh5oGnQ5vqQmKX8EmaD2XMC0kUvyUJQdGYAb0UDptydt /+j7x0/4rGoIeL02Hhwvt218/l53bcRllLEMn+3ML/NdzQH1/OdB13FHEMl0AzUaiz4mUfm suPzLS6b6daWs6U70bMeg== X-UI-Out-Filterresults: notjunk:1; V01:K0:yCO4iCCCQS4=:PeuuicgM7+9+YN+mGv7kHX 5KrGbKz/4UJy9NupLnCIXQ0CYlv1PPzAAb0rPSErfMwLwnLL0pjXIj141N8R5PnU3ohoxVOw+ 2xPFjcp+tO0pa6mGjeuxMVV0EBpv4j3wJ7syORVwbzRxYsdlDt8TC4KqIIvUUKnpEuPCjMecd Pp6O9FU7XLIy321BcfQ1s3Sq/kC6nrSNvP0qVSaA1UsUNfuNdBg5gjwdmoOACw7l03WVO+Wge bRgeuuhH6h3/0FY6DkQI74MR1QgLnbix5jak31WGRhCGy2BA9t5S3gl5bEzGRskgBKR5db43D ptGgeJnnXfYLSg89siMTy86Amhedc/n/iecwBnywIanWoEPzA3ubypDkr5C3V28PcPpAQUUEL MLd160AJcwIfUx46hoAarAhZ4FUFpduP+MbDEuIMvPcC8Yw0bNe7CX4vEtqz0x+q/iHBCca1L NZ/SSN3eg2zif6/9wDOAHEKQsenrXtdpJyx9zPxqTxlK+f49GwjOnuFQf49KB8KbDUuRBpOw9 xH8TyMWuMI/kpVyIS5TzIi3ARZ6Uhjqa6PqhKuU+F0FmTZT9y1jInIRl4YNapPdg3iZuJ0KwC v2KZaZIWur5Iid7jov4PfxRmhCzriJ/UpF1BXAJmwrFbsg5zmQIg0jhZ/TjVGcajlcSEgSQCu +IFfHLFb0LFUtUNvGUHIjzQkVJ7dt7gC0IiUYjitM65kof77pERalDdlM0oazP6QuN+KAQS2G zJHoBTF65RzzZ+RJFzInXIBjSecBglF0AKipBkxeldbENgOBGQWj7w4mSyv0eItuzuwaDqyaY ELDxbX0 Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org 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(-) 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.