From patchwork Fri Feb 21 17:46:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Loc Ho X-Patchwork-Id: 3699071 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 86E729F370 for ; Fri, 21 Feb 2014 17:48:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A281820125 for ; Fri, 21 Feb 2014 17:48:18 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8D5502011E for ; Fri, 21 Feb 2014 17:48:17 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WGuCX-0000Hh-6r; Fri, 21 Feb 2014 17:47:53 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WGuCL-0003TW-Uk; Fri, 21 Feb 2014 17:47:42 +0000 Received: from exprod5og119.obsmtp.com ([64.18.0.189]) by merlin.infradead.org with smtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WGuC2-0003QL-B8 for linux-arm-kernel@lists.infradead.org; Fri, 21 Feb 2014 17:47:25 +0000 Received: from mail-pd0-f174.google.com ([209.85.192.174]) (using TLSv1) by exprod5ob119.postini.com ([64.18.4.12]) with SMTP ID DSNKUweRENcQDGTOlZV+BrxQEDP+gDZkfuRr@postini.com; Fri, 21 Feb 2014 09:47:22 PST Received: by mail-pd0-f174.google.com with SMTP id z10so3596356pdj.33 for ; Fri, 21 Feb 2014 09:46:56 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=4hTtLPQ2VszsxbKFBXcrk2w9oCat/lPzd7A99Gg24yM=; b=SWENUuCwTXS9i+EdwN1tpDNgR64ReaC4ADZ/TxCRakDWkQj6IogsD7qoGBqq68Pyxd 97jgNHETh7n7h8CfBrpGFEGTVkcX2IjEaIi9BJZUf3KVl/7YrydbUcUlSJIrlN8nGHXp yTcYmWI2R4G67Isi+MvRxRbqKcZNMt9Z6VzZUyTiFa10miD8gqB417KsPZQcgk/8jh8W b1LCYQMC1FQmuNnQmq9Ce+oZjgJxNgsnPgfpyiNYdQwBSf/bNMexLvHwF2TkeIm+jlqi qe5/yAIIH9K2kPdgPokzpRbQAnqtDnHKVyVuV+v1B2A5+h6gPy1kGPTLITFQmtEYXnSo 1hEw== X-Gm-Message-State: ALoCoQlqgbb79UJN7J/jp3yXhkm6UE+bcnFph5InHIbYQHwS6mY7e1W24JeOJUQpMa8Y+RCSdgb700gN6U1RzNNkiSQkZ9f8n8PmdwIGng+Tn0P8HP4Q4ah9SMMHvqqctXrBcskUCsGuOhAo+kJbDWyhz6sMapgs7G19xMrqteu5E1bKQGu1rPJsV06uTFLU775FbQPxlb2O X-Received: by 10.68.159.228 with SMTP id xf4mr10583899pbb.74.1393004816200; Fri, 21 Feb 2014 09:46:56 -0800 (PST) X-Received: by 10.68.159.228 with SMTP id xf4mr10583892pbb.74.1393004816120; Fri, 21 Feb 2014 09:46:56 -0800 (PST) Received: from localhost ([198.137.200.11]) by mx.google.com with ESMTPSA id e3sm23366268pbc.17.2014.02.21.09.46.54 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 21 Feb 2014 09:46:55 -0800 (PST) From: Loc Ho To: olof@lixom.net, tj@kernel.org, arnd@arndb.de Subject: [PATCH v10 1/4] PHY: Add function set_speed to generic PHY framework Date: Fri, 21 Feb 2014 10:46:38 -0700 Message-Id: <1393004801-25970-2-git-send-email-lho@apm.com> X-Mailer: git-send-email 1.5.5 In-Reply-To: <1393004801-25970-1-git-send-email-lho@apm.com> References: <1393004801-25970-1-git-send-email-lho@apm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140221_124722_646609_CBF05DE0 X-CRM114-Status: GOOD ( 13.18 ) X-Spam-Score: -0.9 (/) Cc: devicetree@vger.kernel.org, linux-scsi@vger.kernel.org, jcm@redhat.com, patches@apm.com, linux-ide@vger.kernel.org, ddutile@redhat.com, Loc Ho , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds function set_speed to the generic PHY framework operation structure. This function can be called to instruct the PHY underlying layer at specified lane to configure for specified speed in hertz. Signed-off-by: Loc Ho --- drivers/phy/phy-core.c | 21 +++++++++++++++++++++ include/linux/phy/phy.h | 8 ++++++++ 2 files changed, 29 insertions(+), 0 deletions(-) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 645c867..44f2f63 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -257,6 +257,27 @@ int phy_power_off(struct phy *phy) } EXPORT_SYMBOL_GPL(phy_power_off); +int phy_set_speed(struct phy *phy, int lane, u64 speed) +{ + int ret = -ENOTSUPP; + + mutex_lock(&phy->mutex); + if (phy->ops->set_speed) { + ret = phy->ops->set_speed(phy, lane, speed); + if (ret < 0) { + dev_err(&phy->dev, "phy set speed failed --> %d\n", + ret); + goto out; + } + } + +out: + mutex_unlock(&phy->mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(phy_set_speed); + /** * of_phy_get() - lookup and obtain a reference to a phy by phandle * @dev: device that requests this phy diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e273e5a..4eb589c 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -27,6 +27,7 @@ struct phy; * @exit: operation to be performed while exiting * @power_on: powering on the phy * @power_off: powering off the phy + * @set_speed: set operation speed in hz * @owner: the module owner containing the ops */ struct phy_ops { @@ -34,6 +35,7 @@ struct phy_ops { int (*exit)(struct phy *phy); int (*power_on)(struct phy *phy); int (*power_off)(struct phy *phy); + int (*set_speed)(struct phy *phy, int lane, u64 speed); struct module *owner; }; @@ -145,6 +147,7 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width) { phy->attrs.bus_width = bus_width; } +int phy_set_speed(struct phy *phy, int lane, u64 speed); struct phy *phy_get(struct device *dev, const char *string); struct phy *devm_phy_get(struct device *dev, const char *string); void phy_put(struct phy *phy); @@ -227,6 +230,11 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width) return; } +static inline int phy_set_speed(struct phy *phy, int lane, u64 speed) +{ + return -ENOSYS; +} + static inline struct phy *phy_get(struct device *dev, const char *string) { return ERR_PTR(-ENOSYS);