Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751552AbaKXWeV (ORCPT ); Mon, 24 Nov 2014 17:34:21 -0500 Received: from mail-wg0-f50.google.com ([74.125.82.50]:64570 "EHLO mail-wg0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751345AbaKXWeP (ORCPT ); Mon, 24 Nov 2014 17:34:15 -0500 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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 --- 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) -- 1.9.1 -- 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/