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Wed, 21 Feb 2018 03:57:37 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:54321 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752629AbeBUI4M (ORCPT ); Wed, 21 Feb 2018 03:56:12 -0500 DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.w1.samsung.com 20180221085610euoutp01f870dbf6b39d0cce3651c10cd745f702~VS2p-qCeU2475124751euoutp01K X-AuditID: cbfec7f2-5ffe19c000011644-4b-5a8d3429323a From: Andrzej Hajda To: devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Cc: Andrzej Hajda , Bartlomiej Zolnierkiewicz , Marek Szyprowski , dri-devel@lists.freedesktop.org, Inki Dae , Rob Herring , Mark Rutland , Krzysztof Kozlowski , Chanwoo Choi , Archit Taneja , Laurent Pinchart , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH v4 5/6] extcon: add possibility to get extcon device by OF node Date: Wed, 21 Feb 2018 09:55:40 +0100 Message-id: <20180221085541.14556-6-a.hajda@samsung.com> X-Mailer: git-send-email 2.16.1 In-reply-to: <20180221085541.14556-1-a.hajda@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrMIsWRmVeSWpSXmKPExsWy7djPc7qaJr1RBlOOCFncWneO1aKp4y2r xcYZ61ktrn95zmox/whQ7MrX92wWk+5PYLE4f34Du0XnxCXsFpseX2O1uLxrDpvFjPP7mCwW LWtltlh75C67xdLrF5ksWvceYXcQ8Fgzbw2jx+W+XiaP2R0zWT02repk87jffZzJY/OSeo++ LasYPT5vkgvgiOKySUnNySxLLdK3S+DKOHtjB3vBZ6mKQ8++MjUwHhfrYuTkkBAwkfh6dSF7 FyMXh5DACkaJyXv2MEE4nxklPt15zgJT9WLhZBaIxDJGifs7dzFCOP8ZJb4cXcoGUsUmoCnx d/NNMFtEIFbi3aVdzCBFzAIXWCQunH7FDpIQFgiUmL/1EZjNIqAqsXfmTrAGXgELifeLP7BD rJOXOPymiRXE5hSwlPi9dxLYIAmB22wSr842MUEUuUi0P/jACmELS7w6vgWqWUais+MgE0RD N6PEqX2dUN1TGCXOv7oM1W0tcfj4RbBuZgE+iUnbpgMVcQDFeSU62oQgSjwkvm7rgyp3lJi6 4y0rxM89jBL7J79in8AotYCRYRWjeGppcW56arFhXmq5XnFibnFpXrpecn7uJkZgUjj97/in HYxfLyUdYhTgYFTi4bXQ6YkSYk0sK67MPcQowcGsJMJbKdQbJcSbklhZlVqUH19UmpNafIhR moNFSZw3TqMuSkggPbEkNTs1tSC1CCbLxMEp1cDYsDzt2ylrfvWDl40nTZC+FKJ7RvhhQGDD C7cZxiebr3I9dZRa4lH3eZFEo1K41FatJVse3z15fMcvqYoCf78by8s8zbOabLs4m9bHWcbd Sd4Z/CXFhT9pvuXq02fYj3EZWR00cPtl/vxs/bMWc/tjIhX+hsJn18uvabMRv+audaFgymvf u0ZKLMUZiYZazEXFiQBGfLpuBgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrELMWRmVeSWpSXmKPExsVy+t/xa7oaJr1RBl//GFvcWneO1aKp4y2r xcYZ61ktrn95zmox/whQ7MrX92wWk+5PYLE4f34Du0XnxCXsFpseX2O1uLxrDpvFjPP7mCwW LWtltlh75C67xdLrF5ksWvceYXcQ8Fgzbw2jx+W+XiaP2R0zWT02repk87jffZzJY/OSeo++ LasYPT5vkgvgiOKySUnNySxLLdK3S+DKOHtjB3vBZ6mKQ8++MjUwHhfrYuTkkBAwkXixcDIL iC0ksIRR4tX58C5GLiC7kUni0L0dYAk2AU2Jv5tvsoHYIgKxEm9PfWYGKWIWuMAi8XviTHaQ hLCAv8TThTfAbBYBVYm9M3eCNfAKWEi8X/yBHWKbvMThN02sIDangKXE772TmCE2W0h8OPeV fQIjzwJGhlWMIqmlxbnpucWGesWJucWleel6yfm5mxiBIbvt2M/NOxgvbQw+xCjAwajEw2uh 0xMlxJpYVlyZe4hRgoNZSYS3Uqg3Sog3JbGyKrUoP76oNCe1+BCjNAeLkjjveYPKKCGB9MSS 1OzU1ILUIpgsEwenVAOjn7vLB44aOf0kOR2pAONbcyoTepMP9aZ4H7yqXGI0JzFlXfnSEzYp iwyO9PHO/PvpXU5pbVyuv8FXEelXmWfy9vxkLfnQnn9jh+7zdYLmSy/mrbK2P2Yz6avpae1t 4v8btv7//L8zd5+BYcq+wPDnRd13v2ZMjHMvcmFaLTd17ZIe2a38JeeVWIozEg21mIuKEwGD oLF2VQIAAA== X-CMS-MailID: 20180221085608eucas1p162d2e579a1cc887672b722458edb98fe X-Msg-Generator: CA CMS-TYPE: 201P X-CMS-RootMailID: 20180221085608eucas1p162d2e579a1cc887672b722458edb98fe X-RootMTR: 20180221085608eucas1p162d2e579a1cc887672b722458edb98fe References: <20180221085541.14556-1-a.hajda@samsung.com> Sender: linux-usb-owner@vger.kernel.org X-Mailing-List: linux-usb@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Since extcon property is not allowed in DT, extcon subsystem requires another way to get extcon device. Lets try the simplest approach - get edev by of_node. Signed-off-by: Andrzej Hajda Acked-by: Chanwoo Choi --- v2: changed label to follow local convention (Chanwoo) --- drivers/extcon/extcon.c | 44 ++++++++++++++++++++++++++++++++++---------- include/linux/extcon.h | 6 ++++++ 2 files changed, 40 insertions(+), 10 deletions(-) diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c index cb38c2747684..c4972c4cb3bd 100644 --- a/drivers/extcon/extcon.c +++ b/drivers/extcon/extcon.c @@ -1336,6 +1336,28 @@ void extcon_dev_unregister(struct extcon_dev *edev) EXPORT_SYMBOL_GPL(extcon_dev_unregister); #ifdef CONFIG_OF + +/* + * extcon_get_edev_by_of_node - Get the extcon device from devicetree. + * @node : OF node identyfying edev + * + * Return the pointer of extcon device if success or ERR_PTR(err) if fail. + */ +struct extcon_dev *extcon_get_edev_by_of_node(struct device_node *node) +{ + struct extcon_dev *edev; + + mutex_lock(&extcon_dev_list_lock); + list_for_each_entry(edev, &extcon_dev_list, entry) + if (edev->dev.parent && edev->dev.parent->of_node == node) + goto out; + edev = ERR_PTR(-EPROBE_DEFER); +out: + mutex_unlock(&extcon_dev_list_lock); + + return edev; +} + /* * extcon_get_edev_by_phandle - Get the extcon device from devicetree. * @dev : the instance to the given device @@ -1363,25 +1385,27 @@ struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index) return ERR_PTR(-ENODEV); } - mutex_lock(&extcon_dev_list_lock); - list_for_each_entry(edev, &extcon_dev_list, entry) { - if (edev->dev.parent && edev->dev.parent->of_node == node) { - mutex_unlock(&extcon_dev_list_lock); - of_node_put(node); - return edev; - } - } - mutex_unlock(&extcon_dev_list_lock); + edev = extcon_get_edev_by_of_node(node); of_node_put(node); - return ERR_PTR(-EPROBE_DEFER); + return edev; } + #else + +struct extcon_dev *extcon_get_edev_by_of_node(struct device_node *node) +{ + return ERR_PTR(-ENOSYS); +} + struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index) { return ERR_PTR(-ENOSYS); } + #endif /* CONFIG_OF */ + +EXPORT_SYMBOL_GPL(extcon_get_edev_by_of_node); EXPORT_SYMBOL_GPL(extcon_get_edev_by_phandle); /** diff --git a/include/linux/extcon.h b/include/linux/extcon.h index 6d94e82c8ad9..b47e0c7f01fe 100644 --- a/include/linux/extcon.h +++ b/include/linux/extcon.h @@ -230,6 +230,7 @@ extern void devm_extcon_unregister_notifier_all(struct device *dev, * Following APIs get the extcon_dev from devicetree or by through extcon name. */ extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name); +extern struct extcon_dev *extcon_get_edev_by_of_node(struct device_node *node); extern struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index); @@ -283,6 +284,11 @@ static inline struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name) return ERR_PTR(-ENODEV); } +static inline struct extcon_dev *extcon_get_edev_by_of_node(struct device_node *node) +{ + return ERR_PTR(-ENODEV); +} + static inline struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index) { -- 2.16.1