Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759652AbYGaC4R (ORCPT ); Wed, 30 Jul 2008 22:56:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754770AbYGaCuQ (ORCPT ); Wed, 30 Jul 2008 22:50:16 -0400 Received: from SpacedOut.fries.net ([67.64.210.234]:60579 "EHLO SpacedOut.fries.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759556AbYGaCuL (ORCPT ); Wed, 30 Jul 2008 22:50:11 -0400 Date: Wed, 30 Jul 2008 21:49:00 -0500 From: David Fries To: Andrew Morton Cc: Evgeniy Polyakov , linux-kernel@vger.kernel.org Subject: [PATCH 10/30] W1: Document add, remove, search_count, and pullup. Message-ID: <20080731024859.GK12181@spacedout.fries.net> References: <20080729020433.GA24424@spacedout.fries.net> <20080729161356.2de456fb.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080729161356.2de456fb.akpm@linux-foundation.org> User-Agent: Mutt/1.5.4i X-Greylist: Sender is SPF-compliant, not delayed by milter-greylist-3.0 (SpacedOut.fries.net [127.0.0.1]); Wed, 30 Jul 2008 21:49:00 -0500 (CDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2279 Lines: 48 Document w1_master_add, w1_master_remove, search_count, and pullup. Signed-off-by: David Fries Signed-off-by: Evgeniy Polyakov --- Documentation/w1/w1.generic | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/Documentation/w1/w1.generic b/Documentation/w1/w1.generic index 4c6509d..e3333ee 100644 --- a/Documentation/w1/w1.generic +++ b/Documentation/w1/w1.generic @@ -79,10 +79,13 @@ w1 master sysfs interface - a directory for a found device. The format is family-serial bus - (standard) symlink to the w1 bus driver - (standard) symlink to the w1 driver +w1_master_add - Manually register a slave device w1_master_attempts - the number of times a search was attempted w1_master_max_slave_count - the maximum slaves that may be attached to a master w1_master_name - the name of the device (w1_bus_masterX) +w1_master_pullup - 5V strong pullup 0 enabled, 1 disabled +w1_master_remove - Manually remove a slave device w1_master_search - the number of searches left to do, -1=continual (default) w1_master_slave_count - the number of slaves found @@ -90,7 +93,13 @@ w1_master_slaves - the names of the slaves, one per line w1_master_timeout - the delay in seconds between searches If you have a w1 bus that never changes (you don't add or remove devices), -you can set w1_master_search to a positive value to disable searches. +you can set the module parameter search_count to a small positive number +for an initially small number of bus searches. Alternatively it could be +set to zero, then manually add the slave device serial numbers by +w1_master_add device file. The w1_master_add and w1_master_remove files +generally only make sense when searching is disabled, as a search will +redetect manually removed devices that are present and timeout manually +added devices that aren't on the bus. w1 slave sysfs interface -- 1.4.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/