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Wed, 24 Jul 2019 16:51:22 +0800 From: Chunfeng Yun To: Rob Herring , Greg Kroah-Hartman , Biju Das Subject: [PATCH v8 07/11] usb: roles: Add fwnode_usb_role_switch_get() function Date: Wed, 24 Jul 2019 16:50:41 +0800 Message-ID: <1563958245-6321-8-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1563958245-6321-1-git-send-email-chunfeng.yun@mediatek.com> References: <1563958245-6321-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: EEC99CC9CADEE3CB7C259B701737F573F31D6B5C909FBC392820A1ADB63BBF6C2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190724_015216_372410_79FA8622 X-CRM114-Status: GOOD ( 11.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Hans de Goede , Heikki Krogerus , Badhri Jagan Sridharan , Linus Walleij , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Matthias Brugger , Andy Shevchenko , linux-mediatek@lists.infradead.org, Min Guo , Chunfeng Yun , Adam Thomson , linux-arm-kernel@lists.infradead.org, Li Jun Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Signed-off-by: Heikki Krogerus Signed-off-by: Chunfeng Yun Tested-by: Biju Das --- 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 86defca6623e..5b637aaf311f 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -135,6 +135,26 @@ 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 * -- 2.21.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel