From patchwork Tue Aug 13 11:27:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 11091803 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9E19A1398 for ; Tue, 13 Aug 2019 11:27:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8C3D8285E5 for ; Tue, 13 Aug 2019 11:27:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7CC1B285F0; Tue, 13 Aug 2019 11:27:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 185BD285E5 for ; Tue, 13 Aug 2019 11:27:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727682AbfHML1y (ORCPT ); Tue, 13 Aug 2019 07:27:54 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:24237 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727621AbfHML1x (ORCPT ); Tue, 13 Aug 2019 07:27:53 -0400 X-UUID: 88a89932e486408993bf215e3f3c0db9-20190813 X-UUID: 88a89932e486408993bf215e3f3c0db9-20190813 Received: from mtkcas34.mediatek.inc [(172.27.4.253)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 623384704; Tue, 13 Aug 2019 19:27:45 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 13 Aug 2019 19:27:31 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 13 Aug 2019 19:27:34 +0800 From: Chunfeng Yun To: Rob Herring , Greg Kroah-Hartman , Biju Das CC: Mark Rutland , Chunfeng Yun , Matthias Brugger , Adam Thomson , Li Jun , Badhri Jagan Sridharan , Heikki Krogerus , Hans de Goede , Andy Shevchenko , Min Guo , , , , , , Linus Walleij , Nagarjuna Kristam Subject: [PATCH next v9 07/11] usb: roles: Add fwnode_usb_role_switch_get() function Date: Tue, 13 Aug 2019 19:27:10 +0800 Message-ID: <1565695634-9711-8-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1565695634-9711-1-git-send-email-chunfeng.yun@mediatek.com> References: <1565695634-9711-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 0BBD1601647DB845A688B58D523127A64EE973D2E8AD0D1215CE514D218026862000:8 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Heikki Krogerus The fwnode_usb_role_switch_get() function is exactly the same as usb_role_switch_get(), except that it takes struct fwnode_handle as parameter instead of struct device. Suggested-by: Heikki Krogerus Signed-off-by: Chunfeng Yun Tested-by: Biju Das --- v9: replace signed-off-by by suggested-by Heikki v8: no changes v7: add signed-off-by Chunfeng and tested-by Biju v6: new patch --- drivers/usb/roles/class.c | 20 ++++++++++++++++++++ include/linux/usb/role.h | 7 +++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c index 0526efbc4922..2abb6fe384ca 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -123,6 +123,26 @@ struct usb_role_switch *usb_role_switch_get(struct device *dev) } EXPORT_SYMBOL_GPL(usb_role_switch_get); +/** + * fwnode_usb_role_switch_get - Find USB role switch linked with the caller + * @fwnode: The caller device node + * + * This is similar to the usb_role_switch_get() function above, but it searches + * the switch using fwnode instead of device entry. + */ +struct usb_role_switch *fwnode_usb_role_switch_get(struct fwnode_handle *fwnode) +{ + struct usb_role_switch *sw; + + sw = fwnode_connection_find_match(fwnode, "usb-role-switch", NULL, + usb_role_switch_match); + if (!IS_ERR_OR_NULL(sw)) + WARN_ON(!try_module_get(sw->dev.parent->driver->owner)); + + return sw; +} +EXPORT_SYMBOL_GPL(fwnode_usb_role_switch_get); + /** * usb_role_switch_put - Release handle to a switch * @sw: USB Role Switch diff --git a/include/linux/usb/role.h b/include/linux/usb/role.h index da2b9641b877..2d77f97df72d 100644 --- a/include/linux/usb/role.h +++ b/include/linux/usb/role.h @@ -47,6 +47,7 @@ struct usb_role_switch_desc { int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role); enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw); struct usb_role_switch *usb_role_switch_get(struct device *dev); +struct usb_role_switch *fwnode_usb_role_switch_get(struct fwnode_handle *node); void usb_role_switch_put(struct usb_role_switch *sw); struct usb_role_switch * @@ -70,6 +71,12 @@ static inline struct usb_role_switch *usb_role_switch_get(struct device *dev) return ERR_PTR(-ENODEV); } +static inline struct usb_role_switch * +fwnode_usb_role_switch_get(struct fwnode_handle *node) +{ + return ERR_PTR(-ENODEV); +} + static inline void usb_role_switch_put(struct usb_role_switch *sw) { } static inline struct usb_role_switch *