From patchwork Mon Nov 24 22:33:39 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Grant Likely X-Patchwork-Id: 414131 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 ACBA3140170 for ; Tue, 25 Nov 2014 09:34:47 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751458AbaKXWeR (ORCPT ); Mon, 24 Nov 2014 17:34:17 -0500 Received: from mail-wg0-f53.google.com ([74.125.82.53]:42245 "EHLO mail-wg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751347AbaKXWeP (ORCPT ); Mon, 24 Nov 2014 17:34:15 -0500 Received: by mail-wg0-f53.google.com with SMTP id l18so13495368wgh.40 for ; Mon, 24 Nov 2014 14:34:13 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=Piuh0Qka0gxM/BIYexmicWnVP7lRMHEBislpx4WlKDo=; b=RI16SLgOC035lUAfLrjG+zpI8NvqgTU4MWv0eojl5497ufXW74D5Pbtx8Zwg8wJMjb 0mSgFoL1ilwke1IxZirbzK8PQeHHl5Y2KujKaHEVPM/gMb69hy4EiEiXGAYDkk4eOSSe OvchChVMiwp7knBzaKOPdNyipay2pkmXafgN8mkAP1HYpDiBSnsMAzvn6ThZwelxPWYg YGHqlKv4Ga+biv+B8DTItDy0IiJO7NJ5yALKyv3CkTUkZLgcG5lN4kAB4zHm3Pd4o8aH QSnHwlAPi+Eb4s/OXI1TiYmv5xpCvFKjI8x/kmbb73fGfuTakaCeWPL+OYDRxmp3zIli tl5Q== X-Gm-Message-State: ALoCoQl0b4zPxs/LUQLvIRzmRNj6vgb8r3zuROzp3hEPkLESPKCUc5L1cCleI6RyrWOlHNExvNc1 X-Received: by 10.180.93.132 with SMTP id cu4mr25282670wib.46.1416868453701; Mon, 24 Nov 2014 14:34:13 -0800 (PST) Received: from trevor.secretlab.ca (host86-166-84-117.range86-166.btcentralplus.com. [86.166.84.117]) by mx.google.com with ESMTPSA id p7sm22861808wjo.38.2014.11.24.14.34.10 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 24 Nov 2014 14:34:12 -0800 (PST) Received: by trevor.secretlab.ca (Postfix, from userid 1000) id D635BC44215; Mon, 24 Nov 2014 22:33:45 +0000 (GMT) From: Grant Likely To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Pantelis Antoniou Cc: Rob Herring , Mark Brown , Wolfram Sang , Grant Likely , linux-i2c@vger.kernel.org Subject: [PATCH v2 11/14] i2c/of: Factor out Devicetree registration code Date: Mon, 24 Nov 2014 22:33:39 +0000 Message-Id: <1416868422-22103-12-git-send-email-grant.likely@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1416868422-22103-1-git-send-email-grant.likely@linaro.org> References: <1416868422-22103-1-git-send-email-grant.likely@linaro.org> Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org From: Pantelis Antoniou Dynamically inserting i2c client device nodes requires the use of a single device registration method. Factor out the loop body of of_i2c_register_devices() so that it can be called for individual device_nodes instead of for all the children of a node. Note: The diff of this commit looks far more complicated than it actually is due the indentation being changed for a large block of code. When viewed using the diff -w flag to ignore whitespace changes it can be seen that the change is actually quite simple. Signed-off-by: Pantelis Antoniou [grant.likely: Made new function static and removed changes to header] Signed-off-by: Grant Likely Cc: Wolfram Sang Cc: Rob Herring Cc: linux-i2c@vger.kernel.org Reviewed-by: Wolfram Sang --- drivers/i2c/i2c-core.c | 97 +++++++++++++++++++++++++++----------------------- 1 file changed, 52 insertions(+), 45 deletions(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index f43b4e11647a..15ba6185dba5 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -49,6 +49,7 @@ #include #include #include +#include #include "i2c-core.h" @@ -1368,63 +1369,69 @@ static void i2c_scan_static_board_info(struct i2c_adapter *adapter) /* OF support code */ #if IS_ENABLED(CONFIG_OF) -static void of_i2c_register_devices(struct i2c_adapter *adap) +static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap, + struct device_node *node) { - void *result; - struct device_node *node; + struct i2c_client *result; + struct i2c_board_info info = {}; + struct dev_archdata dev_ad = {}; + const __be32 *addr; + int len; - /* Only register child devices if the adapter has a node pointer set */ - if (!adap->dev.of_node) - return; + dev_dbg(&adap->dev, "of_i2c: register %s\n", node->full_name); - dev_dbg(&adap->dev, "of_i2c: walking child nodes\n"); + if (of_modalias_node(node, info.type, sizeof(info.type)) < 0) { + dev_err(&adap->dev, "of_i2c: modalias failure on %s\n", + node->full_name); + return ERR_PTR(-EINVAL); + } - for_each_available_child_of_node(adap->dev.of_node, node) { - struct i2c_board_info info = {}; - struct dev_archdata dev_ad = {}; - const __be32 *addr; - int len; + addr = of_get_property(node, "reg", &len); + if (!addr || (len < sizeof(int))) { + dev_err(&adap->dev, "of_i2c: invalid reg on %s\n", + node->full_name); + return ERR_PTR(-EINVAL); + } - dev_dbg(&adap->dev, "of_i2c: register %s\n", node->full_name); + info.addr = be32_to_cpup(addr); + if (info.addr > (1 << 10) - 1) { + dev_err(&adap->dev, "of_i2c: invalid addr=%x on %s\n", + info.addr, node->full_name); + return ERR_PTR(-EINVAL); + } - if (of_modalias_node(node, info.type, sizeof(info.type)) < 0) { - dev_err(&adap->dev, "of_i2c: modalias failure on %s\n", - node->full_name); - continue; - } + info.irq = irq_of_parse_and_map(node, 0); + info.of_node = of_node_get(node); + info.archdata = &dev_ad; - addr = of_get_property(node, "reg", &len); - if (!addr || (len < sizeof(int))) { - dev_err(&adap->dev, "of_i2c: invalid reg on %s\n", - node->full_name); - continue; - } + if (of_get_property(node, "wakeup-source", NULL)) + info.flags |= I2C_CLIENT_WAKE; - info.addr = be32_to_cpup(addr); - if (info.addr > (1 << 10) - 1) { - dev_err(&adap->dev, "of_i2c: invalid addr=%x on %s\n", - info.addr, node->full_name); - continue; - } + request_module("%s%s", I2C_MODULE_PREFIX, info.type); - info.irq = irq_of_parse_and_map(node, 0); - info.of_node = of_node_get(node); - info.archdata = &dev_ad; + result = i2c_new_device(adap, &info); + if (result == NULL) { + dev_err(&adap->dev, "of_i2c: Failure registering %s\n", + node->full_name); + of_node_put(node); + irq_dispose_mapping(info.irq); + return ERR_PTR(-EINVAL); + } + return result; +} - if (of_get_property(node, "wakeup-source", NULL)) - info.flags |= I2C_CLIENT_WAKE; +static void of_i2c_register_devices(struct i2c_adapter *adap) +{ + struct device_node *node; - request_module("%s%s", I2C_MODULE_PREFIX, info.type); + /* Only register child devices if the adapter has a node pointer set */ + if (!adap->dev.of_node) + return; - result = i2c_new_device(adap, &info); - if (result == NULL) { - dev_err(&adap->dev, "of_i2c: Failure registering %s\n", - node->full_name); - of_node_put(node); - irq_dispose_mapping(info.irq); - continue; - } - } + dev_dbg(&adap->dev, "of_i2c: walking child nodes\n"); + + for_each_available_child_of_node(adap->dev.of_node, node) + of_i2c_register_device(adap, node); } static int of_dev_node_match(struct device *dev, void *data)