From patchwork Tue May 31 08:20:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harsh Agarwal X-Patchwork-Id: 577764 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B6ECC433FE for ; Tue, 31 May 2022 08:20:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244849AbiEaIUu (ORCPT ); Tue, 31 May 2022 04:20:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244819AbiEaIUp (ORCPT ); Tue, 31 May 2022 04:20:45 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5EC1D9399D; Tue, 31 May 2022 01:20:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1653985241; x=1685521241; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=r79Lv8Tpc0oVus0BBEyrwDuYWHc751ghgdapTd8vfFo=; b=Y3IF1itpay+NwY86t9fSdDgCwxqk6Zn/nGpzjPy55hXeZQkECJx8luZf 98ucKKtMPlsepTeNDJrUoVv6gov9xE2NjuVXNfQCky3i4/VcTkctdZmUY VPJFMHwPj5glheG70EbwjEvr3jqs2BS57bsMVFSSps2mkxi2F4mGF8BRA E=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 31 May 2022 01:20:41 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 May 2022 01:20:40 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 31 May 2022 01:20:39 -0700 Received: from hu-harshq-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 31 May 2022 01:20:35 -0700 From: Harsh Agarwal To: Greg Kroah-Hartman , Rob Herring , Philipp Zabel , "Krzysztof Kozlowski" , Felipe Balbi , Bjorn Andersson CC: , , , , , , Harsh Agarwal Subject: [PATCH 2/3] usb: phy: Add devm_of_usb_get_phy_by_phandle Date: Tue, 31 May 2022 13:50:16 +0530 Message-ID: <1653985217-20953-3-git-send-email-quic_harshq@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1653985217-20953-1-git-send-email-quic_harshq@quicinc.com> References: <1653985217-20953-1-git-send-email-quic_harshq@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Adding support for devm_of_usb_get_phy_by_phandle which allows us to get PHY phandles of a device declared inside lookup_node. Signed-off-by: Harsh Agarwal Reported-by: kernel test robot --- drivers/usb/phy/phy.c | 34 ++++++++++++++++++++++++++++++++++ include/linux/usb/phy.h | 8 ++++++++ 2 files changed, 42 insertions(+) diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c index 1b24492..0843757 100644 --- a/drivers/usb/phy/phy.c +++ b/drivers/usb/phy/phy.c @@ -615,6 +615,40 @@ struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, EXPORT_SYMBOL_GPL(devm_usb_get_phy_by_phandle); /** + * devm_of_usb_get_phy_by_phandle - find the USB PHY by phandle in lookup_node + * @dev: device that requests this phy + * @phandle: name of the property holding the phy phandle value + * @index: the index of the phy + * @lookup_node: The node to search for PHY phandles. + * + * Returns the phy driver associated with the given phandle value, + * after getting a refcount to it, -ENODEV if there is no such phy or + * -EPROBE_DEFER if there is a phandle to the phy, but the device is + * not yet loaded. While at that, it also associates the device with + * the phy using devres. On driver detach, release function is invoked + * on the devres data, then, devres data is freed. + * + * For use by USB host and peripheral drivers. + */ +struct usb_phy *devm_of_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index, struct device_node *lookup_node) +{ + struct device_node *node; + struct usb_phy *phy; + + node = of_parse_phandle(lookup_node, phandle, index); + if (!node) { + dev_dbg(dev, "failed to get %s phandle in %pOF node\n", phandle, + dev->of_node); + return ERR_PTR(-ENODEV); + } + phy = devm_usb_get_phy_by_node(dev, node, NULL); + of_node_put(node); + return phy; +} +EXPORT_SYMBOL_GPL(devm_of_usb_get_phy_by_phandle); + +/** * devm_usb_put_phy - release the USB PHY * @dev: device that wants to release this phy * @phy: the phy returned by devm_usb_get_phy() diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index e4de6bc..2581c72 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -220,6 +220,8 @@ extern struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type); extern struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, const char *phandle, u8 index); +extern struct usb_phy *devm_of_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index, struct device_node *lookup_node); extern struct usb_phy *devm_usb_get_phy_by_node(struct device *dev, struct device_node *node, struct notifier_block *nb); extern void usb_put_phy(struct usb_phy *); @@ -249,6 +251,12 @@ static inline struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, return ERR_PTR(-ENXIO); } +extern inline struct usb_phy *devm_of_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index, struct device_node *lookup_node) +{ + return ERR_PTR(-ENXIO); +} + static inline struct usb_phy *devm_usb_get_phy_by_node(struct device *dev, struct device_node *node, struct notifier_block *nb) {