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Tue, 27 Feb 2018 02:13:34 -0500 Received: from mailout2.w1.samsung.com ([210.118.77.12]:50116 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752129AbeB0HLp (ORCPT ); Tue, 27 Feb 2018 02:11:45 -0500 DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.w1.samsung.com 20180227071142euoutp021cac56f4f0325ff87dcce2cea7b829cf~XHTK16-3u2625726257euoutp02a X-AuditID: cbfec7f5-b5fff700000028a9-b3-5a9504ad5319 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 v5 5/6] extcon: add possibility to get extcon device by OF node Date: Tue, 27 Feb 2018 08:11:33 +0100 Message-id: <20180227071134.28063-6-a.hajda@samsung.com> X-Mailer: git-send-email 2.16.2 In-reply-to: <20180227071134.28063-1-a.hajda@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSe0hTURzHO/e1u9HqNiVPKpmDQCW1KOOIEgYVF+mPEkIaWK68zOeUXTX1 D5Mwm0/MV9rDmflIcVlT1ESNzBylNnW+ysJCcDTMB2qiaea89t/n+/t9zvmdczg0LlsgHOkI dTynUSuj5ZSEaOldM3nqiWLF8YJFb/TlxScS3dH+ItGr0kYSjS9bSKTr2a6NrMxTqGAqn0Am 00sRyrxfJUKG6TESmdsfU6jU1IWhypq7ONL3fBOh6vEhDN3t7BEFMGxDeQNgzXm5GPtIW0ay hvpMip3KNmJsU9VtNq+5HrBLhsOXaIXEP4yLjkjkNN5nQiXhw9WhcTqnpNHylDQwezAL0DRk TsFa3YUsIKFlzHMA02e+E0JYArBIrxdlAfGONDo7TwqNGgA3LeuYELYAbG7t2LEoxh1uNn2m bGzPhMC54XbcJuHMIAEH+6w7kh1zGerXGjAbE8xR+N7wdacuZRDsn2ilhHEu8OnAKG5jMeML 35T0U7aNIDNJwYonJbvSOagdaSMEtoNWY/PuWZ2huTCbEBZkA/ixKxMXQhGAJqsZEyw/+M44 RNoYZ/bBgpYHuPAcUqjNkAkKC9f/dOACn4WWRi0l3DkHwPXJaTwfOFaAPfXAgUvgY1Qcf1LN 3fLilTF8glrldTM2xgC2/0HfX+NKG+jauNENGBrI90oDnIsUMlKZyCfHdANI43J7ad2zQoVM GqZMTuE0sdc1CdEc3w2caELuIL3mlqqQMSplPBfFcXGc5n8Xo8WOaeDK1dVDeUFKX6I38HWF +KIht2sg2D3850hfoE+BqyzM3n/it5+a+gBJv/0LIU2rVSlJP8ruhai33m7U6oIyrK7dp893 LvVXoh6XdGOdzJNSNT/0cPYIjAw7oudaViNXD0S7ZViT045h0zM+CXFjqbwlh9XJ8cW5KLvl 4smgYDnBhytPeOAaXvkPWvYVQgMDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrILMWRmVeSWpSXmKPExsVy+t/xy7prWaZGGdy5K2Bxa905Voumjres FhtnrGe1uP7lOavF/CNAsStf37NZTLo/gcXi/PkN7BadE5ewW2x6fI3V4vKuOWwWM87vY7JY tKyV2WLtkbvsFkuvX2SyaN17hN1BwGPNvDWMHpf7epk8ZnfMZPXYtKqTzeN+93Emj81L6j36 tqxi9Pi8SS6AI4rLJiU1J7MstUjfLoEr49LShIL50hVX51U1ML4R62Lk5JAQMJG4+uY9axcj F4eQwBJGiTtrPzJDOI1MEu/a5jOCVLEJaEr83XyTDcQWEYiVeHvqM1gRs8AFFonfE2eygySE Bfwlls/6zwpiswioShzddAcszitgIXHmxnY2iHXyEgvPXmUGsTkFLCX2TzsDFhcCqrnfeYx1 AiPPAkaGVYwiqaXFuem5xUZ6xYm5xaV56XrJ+bmbGIEBu+3Yzy07GLveBR9iFOBgVOLhnSE3 JUqINbGsuDL3EKMEB7OSCO/KxZOjhHhTEiurUovy44tKc1KLDzFKc7AoifOeN6iMEhJITyxJ zU5NLUgtgskycXBKNTCejn5Z//PETbZG7j98LWuEVkjNdttou9Jwm/Ch3WtZ7kzJXa0i8bm0 7cx17tDylcIia1md1DgVQy8GuRctn9ih/GvbpfllBrWWDVErtS4fXaBsKMRiyDat+aek0+3w f3PjGk97+C/LtXuTdenI9fVznikG/e7dzX7na0Q4n8zOup8SRSf2Sc9RYinOSDTUYi4qTgQA xMXrjlQCAAA= X-CMS-MailID: 20180227071141eucas1p1170216070d70007a07de120a0dc3363a X-Msg-Generator: CA CMS-TYPE: 201P X-CMS-RootMailID: 20180227071141eucas1p1170216070d70007a07de120a0dc3363a X-RootMTR: 20180227071141eucas1p1170216070d70007a07de120a0dc3363a References: <20180227071134.28063-1-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 --- v5: function renamed to extcon_find_edev_by_node (Andy) 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..47a5ca9eb86d 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_find_edev_by_node - Find 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_find_edev_by_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_find_edev_by_node(node); of_node_put(node); - return ERR_PTR(-EPROBE_DEFER); + return edev; } + #else + +struct extcon_dev *extcon_find_edev_by_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_find_edev_by_node); EXPORT_SYMBOL_GPL(extcon_get_edev_by_phandle); /** diff --git a/include/linux/extcon.h b/include/linux/extcon.h index 6d94e82c8ad9..7f033b1ea568 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_find_edev_by_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_find_edev_by_node(struct device_node *node) +{ + return ERR_PTR(-ENODEV); +} + static inline struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index) { -- 2.16.2