From patchwork Wed Jun 12 01:39:09 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chanwoo Choi X-Patchwork-Id: 2707641 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5240AC1459 for ; Wed, 12 Jun 2013 01:40:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3980F20273 for ; Wed, 12 Jun 2013 01:40:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F131320265 for ; Wed, 12 Jun 2013 01:40:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757607Ab3FLBkN (ORCPT ); Tue, 11 Jun 2013 21:40:13 -0400 Received: from mailout3.samsung.com ([203.254.224.33]:39379 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753814Ab3FLBkD (ORCPT ); Tue, 11 Jun 2013 21:40:03 -0400 Received: from epcpsbgr4.samsung.com (u144.gpu120.samsung.co.kr [203.254.230.144]) by mailout3.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MO90052AB9SAPA0@mailout3.samsung.com>; Wed, 12 Jun 2013 10:40:02 +0900 (KST) Received: from epcpsbgm2.samsung.com ( [172.20.52.113]) by epcpsbgr4.samsung.com (EPCPMTA) with SMTP id FB.1C.29708.171D7B15; Wed, 12 Jun 2013 10:40:01 +0900 (KST) X-AuditID: cbfee690-b7f6f6d00000740c-65-51b7d1711729 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id AB.5C.21068.171D7B15; Wed, 12 Jun 2013 10:40:01 +0900 (KST) Received: from chan.10.32.193.11 ([10.90.8.51]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MO900NIYBAP4200@mmp2.samsung.com>; Wed, 12 Jun 2013 10:40:01 +0900 (KST) From: Chanwoo Choi To: kishon@ti.com, myungjoo.ham@samsung.com, cw00.choi@samsung.com, balbi@ti.com, devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-omap@vger.kernel.org Cc: grant.likely@linaro.org, rob.herring@calxeda.com, rob@landley.net, gregkh@linuxfoundation.org, benoit.cousson@linaro.org, anish198519851985@gmail.com, pmeerw@pmeerw.net Subject: [PATCH] extcon: Add an API to get extcon device from dt node Date: Wed, 12 Jun 2013 10:39:09 +0900 Message-id: <1371001149-16906-1-git-send-email-cw00.choi@samsung.com> X-Mailer: git-send-email 1.8.0 In-reply-to: <1370276020-17446-2-git-send-email-kishon@ti.com> References: <1370276020-17446-2-git-send-email-kishon@ti.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrNIsWRmVeSWpSXmKPExsWyRsSkULfw4vZAg1Xd2haXb3QxWxy8X28x 89NNNovrX56zWhyY/RBI/NnBaNG8eD2bxYWnPWwWC9uWsFhc3jWHzWL2kn4Wi0XLWpktbjeu YLP4vesYu8XhFQeYLNa9nM7iIOCx4PMVdo+ds+6ye7xaPZPV4861PWwe++euYfc4P2Mho8f5 5iOMHn1bVjF6HL+xncnj8ya5AK4oLpuU1JzMstQifbsErozpT2axFMxTrOicuImxgfGWdBcj J4eEgInEtfu72CFsMYkL99azgdhCAksZJd5PloKpWbjrNGMXIxdQfDqjxMpLf6Gc/4wSV25v A+tmE9CS2P/iBhtIQkTgNaPEzq5VLCAOs8AGRok3y7uYuxg5OIQFXCXu/QkFaWARUJW4se87 E4jNCxRe+XYxI8Q6OYkPex6BDeUUsJPYt6CPFaRVSMBWonEJ2EgJgVYOiXWT5jJDzBGQ+Db5 EAtIjYSArMSmA8wQYyQlDq64wTKBUXgBI8MqRtHUguSC4qT0IhO94sTc4tK8dL3k/NxNjMCI O/3v2YQdjPcOWB9iTAYaN5FZSjQ5HxixeSXxhsZmRhamJqbGRuaWZqQJK4nzqrdYBwoJpCeW pGanphakFsUXleakFh9iZOLglGpgtOV/q5ui1z2jdflzTbHsOD/dLK0fNiYd1atiCu4ySeed ffbD+tU8CQHe9Q7ft26wEf7it+2Oo4C/edGmFXFpNsYvNnUcKMy1lW0SyL8Ssuz/i28r7l9f mZlUuHVN5LRbKRKcD/xWM7J1ld6/eTvcef3KKc3+Np/M9Tfn7n7UxzvFdMd3x5+PlFiKMxIN tZiLihMBiFmc7M4CAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprJKsWRmVeSWpSXmKPExsVy+t9jQd3Ci9sDDXZ+lbe4fKOL2eLg/XqL mZ9usllc//Kc1eLA7IdA4s8ORovmxevZLC487WGzWNi2hMXi8q45bBazl/SzWCxa1spscbtx BZvF713H2C0OrzjAZLHu5XQWBwGPBZ+vsHvsnHWX3ePV6pmsHneu7WHz2D93DbvH+RkLGT3O Nx9h9OjbsorR4/iN7UwenzfJBXBFNTDaZKQmpqQWKaTmJeenZOal2yp5B8c7x5uaGRjqGlpa mCsp5CXmptoqufgE6Lpl5gA9o6RQlphTChQKSCwuVtK3wzQhNMRN1wKmMULXNyQIrsfIAA0k rGHMmP5kFkvBPMWKzombGBsYb0l3MXJySAiYSCzcdZoRwhaTuHBvPVsXIxeHkMB0RomVl/4y Qjj/GSWu3N7GDlLFJqAlsf/FDbAqEYHXjBI7u1axgDjMAhsYJd4s72LuYuTgEBZwlbj3JxSk gUVAVeLGvu9MIDYvUHjl28VQ6+QkPux5BDaUU8BOYt+CPlaQViEBW4nGJSwTGHkXMDKsYhRN LUguKE5KzzXSK07MLS7NS9dLzs/dxAiO6GfSOxhXNVgcYhTgYFTi4T1gtj1QiDWxrLgy9xCj BAezkgivbi5QiDclsbIqtSg/vqg0J7X4EGMy0FETmaVEk/OBySavJN7Q2MTMyNLI3NDCyNic NGElcd6DrdaBQgLpiSWp2ampBalFMFuYODilGhizixZvMJxlrNjxd9olP8dV8lfuPv6jJHK4 c+uBPV0mV54Y9l5NiLoW9Hb5cuGVkUILappTOOsvKN/76F943zC9N/XVLkuG1xLeKqF7uDJN 2j1SrzlNkEja+6qqosQxeFqx/ve4LveDxrtl18XNyI9r+nOx63mL8OFkYZsVwWqXgyrksj7y MCixFGckGmoxFxUnAgBdy4njLAMAAA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Kishon Vijay Abraham I Added an API of_extcon_get_extcon_dev() to be used by drivers to get extcon device in the case of dt boot (this can be used instead of extcon_get_extcon_dev()). Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- drivers/extcon/Makefile | 3 +++ drivers/extcon/of-extcon.c | 56 ++++++++++++++++++++++++++++++++++++++++ include/linux/extcon/of-extcon.h | 30 +++++++++++++++++++++ 3 files changed, 89 insertions(+) create mode 100644 drivers/extcon/of-extcon.c create mode 100644 include/linux/extcon/of-extcon.h diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile index 540e2c3..39cdf95 100644 --- a/drivers/extcon/Makefile +++ b/drivers/extcon/Makefile @@ -2,9 +2,12 @@ # Makefile for external connector class (extcon) devices # +obj-$(CONFIG_OF) += of-extcon.o + obj-$(CONFIG_EXTCON) += extcon-class.o obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o obj-$(CONFIG_EXTCON_ADC_JACK) += extcon-adc-jack.o + obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o obj-$(CONFIG_EXTCON_ARIZONA) += extcon-arizona.o diff --git a/drivers/extcon/of-extcon.c b/drivers/extcon/of-extcon.c new file mode 100644 index 0000000..29f82b4 --- /dev/null +++ b/drivers/extcon/of-extcon.c @@ -0,0 +1,56 @@ +/* + * OF helpers for External connector (extcon) framework + * + * Copyright (C) 2013 Texas Instruments, Inc. + * Kishon Vijay Abraham I + * + * Copyright (C) 2013 Samsung Electronics + * Chanwoo Choi + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include + +struct extcon_dev *of_extcon_get_extcon_dev(struct device *dev, int index) +{ + struct device_node *node; + struct extcon_dev *edev; + struct platform_device *extcon_parent_dev; + + if (!dev->of_node) { + dev_dbg(dev, "device does not have a device node entry\n"); + return ERR_PTR(-EINVAL); + } + + node = of_parse_phandle(dev->of_node, "extcon", index); + if (!node) { + dev_dbg(dev, "failed to get phandle in %s node\n", + dev->of_node->full_name); + return ERR_PTR(-ENODEV); + } + + extcon_parent_dev = of_find_device_by_node(node); + if (!extcon_parent_dev) { + dev_dbg(dev, "unable to find device by node\n"); + return ERR_PTR(-EPROBE_DEFER); + } + + edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev)); + if (!edev) { + dev_dbg(dev, "unable to get extcon device : %s\n", + dev_name(&extcon_parent_dev->dev)); + return ERR_PTR(-ENODEV); + } + + return edev; +} +EXPORT_SYMBOL_GPL(of_extcon_get_extcon_dev); diff --git a/include/linux/extcon/of-extcon.h b/include/linux/extcon/of-extcon.h new file mode 100644 index 0000000..77d01ba --- /dev/null +++ b/include/linux/extcon/of-extcon.h @@ -0,0 +1,30 @@ +/* + * OF helpers for External connector (extcon) framework + * + * Copyright (C) 2013 Texas Instruments, Inc. + * Kishon Vijay Abraham I + * + * Copyright (C) 2013 Samsung Electronics + * Chanwoo Choi + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __LINUX_OF_EXTCON_H +#define __LINUX_OF_EXTCON_H + +#if defined(CONFIG_OF) +extern struct extcon_dev + *of_extcon_get_extcon_dev(struct device *dev, int index); +#else +static inline struct extcon_dev + *of_extcon_get_extcon_dev(struct device *dev, int index); +{ + return NULL; +} +#endif /* CONFIG_OF */ + +#endif /* __LINUX_OF_EXTCON_H */