From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755867AbdGSUOO (ORCPT ); Wed, 19 Jul 2017 16:14:14 -0400 Received: from mout.gmx.net ([212.227.17.21]:56927 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755732AbdGSUOM (ORCPT ); Wed, 19 Jul 2017 16:14:12 -0400 From: Jan Kandziora To: LKML Cc: Evgeniy Polyakov , Linux-I2C Subject: [PATCH v4 1/2] wire: export w1_touch_bit Date: Wed, 19 Jul 2017 22:14:08 +0200 Message-Id: <20170719201409.5968-1-jjj@gmx.de> X-Mailer: git-send-email 2.13.2 X-Provags-ID: V03:K0:bECtuFPEFPLjyKKbXnVMuyQxqtQf4UhP6l3Vm95x20BGQ1tK3w9 XpQwT/Ku3Jg4q7631424aQ+eujaNmMJ+Me0JdN+AJvUPP4YDNEV3fj3Ej8IL4dWjMINztjo xZKaKkpPSaa9g18XSA3aT05DGGb2bL+QfoT8Qd4dC5BaPv1BTwA+R1ZoFjy3zO19EtLPtYc W5WGpFqdbFQvLgJiFvyIg== X-UI-Out-Filterresults: notjunk:1;V01:K0:rtnZDoLv0V4=:38Qwm7sWy8K6OxGyeVGRB/ bo6Skp0jvuNH5ONRzzNubOic9jZ2+glJQakCgQOG18aTaR0TYjfDFVYHJ/JzJGyukRIf12m7p vjb/cJTCPEEWLTKqpNj3f+Hs14Af1lB4/OmspKRJNcDgdh3HJZwDtMkNImSppMcwqmI3TAfsK I3FBnCXeDThkLyJ3xNT0iDGE1WbZHsjybaroHvKx11iJWtvTZwiYpK5kXN02e2VWXuduFzBel 7ooDVo59ANDRqcw+pP95CCTChzmsSBoGjE3ErOZdXYc6QclnBqvWVp/9h5fJo7faIXH0n1Ibp /lJdssI493th5OiIC8RAlw8bymHuwzMqU2+MSdlo3GvwRftFQScX88V3A8AqI0u65qyhllapP 8v+lVazSpBe8SXe+bOC54TLnuBImqhLpdyeTk41t0nVETLHj2LZCsIgKZxu3oPGqMFphvBWFp sqN/ywgBh+Kwv+Zv9YUk2DbsIVYNVlJxPUzneWrTrAm61YEtzaaevc5bSK3yWSAASf3m80V+E v5YBdtRJ7KQ9ak75gQWVjZqAVnZtPHW2dDRW6bDdWB3N0lKExVItv0BItrMi9hRsuDYjHdJYs 1mK9USFxWQ5WCpmqD9nKpWk8DiYqNjpu3HhMpIMhM/EJRMksx46iUP5RQRSscrhHOawa6VswA dmyPRR+eNfpqReV45gsJUxlarxvmpBbRzT/oep0kkVCQaAeGQNpufjga3gbU2gdfUxuAJFcr2 ZKYQdb5XF1T/XtKMXjACbUnFnQVKk7FDOFbYUCSIfpqoZqteW4RE1cLvqNWcLiKpSr2OVHmaM BSsAyT6pyvvo50AJCMkgctLosjpxQ== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 --- Changes in v4 against v3 in this subpatch: - adapted to linux-4.12.0 No changes in v3 against v2,v1 in this subpatch. 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 758a7a6..e7af855 100644 --- a/drivers/w1/w1.h +++ b/drivers/w1/w1.h @@ -295,6 +295,7 @@ 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 1134e6b..4bb77a1 100644 --- a/drivers/w1/w1_io.c +++ b/drivers/w1/w1_io.c @@ -58,7 +58,7 @@ 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); @@ -69,6 +69,7 @@ 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. -- 2.13.2