From patchwork Fri Dec 13 16:51:15 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Porter X-Patchwork-Id: 22331 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-qc0-f197.google.com (mail-qc0-f197.google.com [209.85.216.197]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id 9734C202E2 for ; Fri, 13 Dec 2013 16:51:37 +0000 (UTC) Received: by mail-qc0-f197.google.com with SMTP id r5sf3695445qcx.8 for ; Fri, 13 Dec 2013 08:51:37 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:delivered-to:from:to:cc:subject :date:message-id:in-reply-to:references:x-original-sender :x-original-authentication-results:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-unsubscribe; bh=uQrf3NX8KcejTob99uM0eMynfsTPjw+sR7E8FT7Wk70=; b=E70pttV5KS2906WJE3WXocQl6QJmQRb2Exg+yDHTV2x+IzFReCsCWyAqfc4jm7FJZR BG9d1UP2xI4g0vxq0NWm/lQAp6N6FUiFWZ9S86Jy6rhGInTpy5prsAq81nvnCXjHGR45 p1evf6dV95lTmHpJ3zCReRRZ9bW0ptJVhSlsDTVZkIVEU95NC2vEmbnBbSaXyzAJIghO E4EmPA40Db3R7HnmAenUzu7MLrqoqszAhpLaAVECrl0vuUR+zqR8Dz7jc3Mu4sFtOcGE YwoKgD/VYfMDx/eXbLBMIHY+xaEFxSAEC6DBRJR1udyxdIHnktLQcvWgkeeslRG0yFqH 08yg== X-Gm-Message-State: ALoCoQkpdgL1hoeWWhquHBkelDO2oAVze0wWwiOmuAZMXcgll6xWxhc4ksZupdKgUtoPn9ne678T X-Received: by 10.58.249.208 with SMTP id yw16mr1237931vec.10.1386953497150; Fri, 13 Dec 2013 08:51:37 -0800 (PST) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.49.104.9 with SMTP id ga9ls1068311qeb.38.gmail; Fri, 13 Dec 2013 08:51:37 -0800 (PST) X-Received: by 10.58.37.67 with SMTP id w3mr1682695vej.22.1386953496997; Fri, 13 Dec 2013 08:51:36 -0800 (PST) Received: from mail-vb0-f45.google.com (mail-vb0-f45.google.com [209.85.212.45]) by mx.google.com with ESMTPS id o6si945432vcz.4.2013.12.13.08.51.36 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 13 Dec 2013 08:51:36 -0800 (PST) Received-SPF: neutral (google.com: 209.85.212.45 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) client-ip=209.85.212.45; Received: by mail-vb0-f45.google.com with SMTP id i12so1456397vbh.4 for ; Fri, 13 Dec 2013 08:51:36 -0800 (PST) X-Received: by 10.58.154.6 with SMTP id vk6mr1212357veb.61.1386953496893; Fri, 13 Dec 2013 08:51:36 -0800 (PST) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patches@linaro.org Received: by 10.220.174.196 with SMTP id u4csp51908vcz; Fri, 13 Dec 2013 08:51:36 -0800 (PST) X-Received: by 10.43.144.131 with SMTP id jq3mr1363785icc.83.1386953496139; Fri, 13 Dec 2013 08:51:36 -0800 (PST) Received: from mail-ig0-f177.google.com (mail-ig0-f177.google.com [209.85.213.177]) by mx.google.com with ESMTPS id dj10si2514705icc.42.2013.12.13.08.51.35 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 13 Dec 2013 08:51:36 -0800 (PST) Received-SPF: neutral (google.com: 209.85.213.177 is neither permitted nor denied by best guess record for domain of mporter@linaro.org) client-ip=209.85.213.177; Received: by mail-ig0-f177.google.com with SMTP id uy17so1586636igb.4 for ; Fri, 13 Dec 2013 08:51:35 -0800 (PST) X-Received: by 10.43.151.12 with SMTP id kq12mr2624357icc.55.1386953495692; Fri, 13 Dec 2013 08:51:35 -0800 (PST) Received: from beef.ohporter.com (cpe-98-27-254-98.neo.res.rr.com. [98.27.254.98]) by mx.google.com with ESMTPSA id hv5sm5155766igb.9.2013.12.13.08.51.33 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 13 Dec 2013 08:51:34 -0800 (PST) From: Matt Porter To: Felipe Balbi , Greg Kroah-Hartman , Kishon Vijay Abraham I , Rob Herring , Pawel Moll , Mark Rutland , Kumar Gala , Ian Campbell , Christian Daudt , Paul Zimmerman Cc: Tomasz Figa , Kamil Debski , Kyungmin Park , Dinh Nguyen , Russell King , Linux USB List , Linux ARM Kernel List , Linux Kernel Mailing List , Devicetree List , Linaro Patches Subject: [PATCH v6 1/9] phy: add phy_get_bus_width()/phy_set_bus_width() calls Date: Fri, 13 Dec 2013 11:51:15 -0500 Message-Id: <1386953483-21631-2-git-send-email-mporter@linaro.org> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1386953483-21631-1-git-send-email-mporter@linaro.org> References: <1386953483-21631-1-git-send-email-mporter@linaro.org> X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: mporter@linaro.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.212.45 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Precedence: list Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org List-ID: X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , This adds a pair of APIs that allows the generic PHY subsystem to provide information on the PHY bus width. The PHY provider driver may use phy_set_bus_width() to set the bus width that the PHY supports. The controller driver may then use phy_get_bus_width() to fetch the PHY bus width in order to properly configure the controller. Signed-off-by: Matt Porter Acked-by: Kishon Vijay Abraham I --- include/linux/phy/phy.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 6d72269..e273e5a 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -38,6 +38,14 @@ struct phy_ops { }; /** + * struct phy_attrs - represents phy attributes + * @bus_width: Data path width implemented by PHY + */ +struct phy_attrs { + u32 bus_width; +}; + +/** * struct phy - represents the phy device * @dev: phy device * @id: id of the phy device @@ -46,6 +54,7 @@ struct phy_ops { * @mutex: mutex to protect phy_ops * @init_count: used to protect when the PHY is used by multiple consumers * @power_count: used to protect when the PHY is used by multiple consumers + * @phy_attrs: used to specify PHY specific attributes */ struct phy { struct device dev; @@ -55,6 +64,7 @@ struct phy { struct mutex mutex; int init_count; int power_count; + struct phy_attrs attrs; }; /** @@ -127,6 +137,14 @@ int phy_init(struct phy *phy); int phy_exit(struct phy *phy); int phy_power_on(struct phy *phy); int phy_power_off(struct phy *phy); +static inline int phy_get_bus_width(struct phy *phy) +{ + return phy->attrs.bus_width; +} +static inline void phy_set_bus_width(struct phy *phy, int bus_width) +{ + phy->attrs.bus_width = bus_width; +} 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); @@ -199,6 +217,16 @@ static inline int phy_power_off(struct phy *phy) return -ENOSYS; } +static inline int phy_get_bus_width(struct phy *phy) +{ + return -ENOSYS; +} + +static inline void phy_set_bus_width(struct phy *phy, int bus_width) +{ + return; +} + static inline struct phy *phy_get(struct device *dev, const char *string) { return ERR_PTR(-ENOSYS);