From patchwork Thu Sep 8 14:27:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ayaka X-Patchwork-Id: 9321503 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id ABDC96077F for ; Thu, 8 Sep 2016 14:28:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9C2B22989F for ; Thu, 8 Sep 2016 14:28:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 90FAD298A4; Thu, 8 Sep 2016 14:28:11 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7AA852989F for ; Thu, 8 Sep 2016 14:28:10 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bi0JG-0002oS-0F; Thu, 08 Sep 2016 14:28:10 +0000 Received: from kozue.soulik.info ([108.61.200.231]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bi0JD-0002ZS-42 for linux-rockchip@lists.infradead.org; Thu, 08 Sep 2016 14:28:08 +0000 Received: from ritsuko.sumomo.pri (unknown [IPv6:2001:470:b30d:2::3bd]) by kozue.soulik.info (Postfix) with ESMTPA id 773611028E9; Thu, 8 Sep 2016 23:27:51 +0900 (JST) From: Randy Li To: linux-usb@vger.kernel.org Subject: [PATCH 1/4] phy: Add reset callback Date: Thu, 8 Sep 2016 22:27:13 +0800 Message-Id: <1473344836-26707-2-git-send-email-ayaka@soulik.info> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1473344836-26707-1-git-send-email-ayaka@soulik.info> References: <1473344836-26707-1-git-send-email-ayaka@soulik.info> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160908_072807_425363_443698C9 X-CRM114-Status: UNSURE ( 7.67 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, heiko@sntech.de, felipe.balbi@linux.intel.com, gregkh@linuxfoundation.org, Randy Li , randy.li@rock-chips.com, linux-kernel@vger.kernel.org, kishon@ti.com, linux-rockchip@lists.infradead.org, robh+dt@kernel.org, John.Youn@synopsys.com MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The only use for this is for solving a hardware design problem in usb of Rockchip RK3288. Signed-off-by: Randy Li Reviewed-by: Heiko Stuebner --- drivers/phy/phy-core.c | 14 ++++++++++++++ include/linux/phy/phy.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 8eca906..32e838d 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -357,6 +357,20 @@ int phy_set_mode(struct phy *phy, enum phy_mode mode) } EXPORT_SYMBOL_GPL(phy_set_mode); +int phy_reset(struct phy *phy) +{ + int ret; + if (!phy || !phy->ops->reset) + return 0; + + mutex_lock(&phy->mutex); + ret = phy->ops->reset(phy); + mutex_unlock(&phy->mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(phy_reset); + /** * _of_phy_get() - lookup and obtain a reference to a phy by phandle * @np: device_node for which to get the phy diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index f08b672..7978df6 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -36,6 +36,7 @@ enum phy_mode { * @power_on: powering on the phy * @power_off: powering off the phy * @set_mode: set the mode of the phy + * @reset: reseting the phy * @owner: the module owner containing the ops */ struct phy_ops { @@ -44,6 +45,7 @@ struct phy_ops { int (*power_on)(struct phy *phy); int (*power_off)(struct phy *phy); int (*set_mode)(struct phy *phy, enum phy_mode mode); + int (*reset)(struct phy *phy); struct module *owner; }; @@ -136,6 +138,7 @@ int phy_exit(struct phy *phy); int phy_power_on(struct phy *phy); int phy_power_off(struct phy *phy); int phy_set_mode(struct phy *phy, enum phy_mode mode); +int phy_reset(struct phy *phy); static inline int phy_get_bus_width(struct phy *phy) { return phy->attrs.bus_width;