From patchwork Tue Feb 15 17:09:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Caleb Connolly X-Patchwork-Id: 12747373 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 C9431C433F5 for ; Tue, 15 Feb 2022 17:10:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242241AbiBORKR (ORCPT ); Tue, 15 Feb 2022 12:10:17 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:36380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242240AbiBORKR (ORCPT ); Tue, 15 Feb 2022 12:10:17 -0500 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0941D11ADD1 for ; Tue, 15 Feb 2022 09:10:07 -0800 (PST) Received: by mail-wr1-x431.google.com with SMTP id u1so19501191wrg.11 for ; Tue, 15 Feb 2022 09:10:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=46n4LaD4ZyMBoEv7QyqZkVx2QkFYWM4XtM2ZRYBTQAc=; b=H/pVHnep84f4SO5mEUh7ccuxHhCZBOhnjSDZOxD0osdtblLDsY94M3esKJn6TdtW07 us9EUXoRcIScwy8t4CVk8+2G3pLob+uD9g5HKJa/Jh/XP7V8kh5am3aqwXoIo/i2MoVo j3GhmQkVPGi2mz6EXqCxHJV+aPLhMzrDJcrVUqmrrcD7Iw9vE+CtF3SZhc/5imEdkmrL EPZNUWCuP+RYLTe3MMbqn9zwBP7yUyPJj2vAawjeYSpqgl7UzfiMgyT4JsVGAHEWWeXU FtDjDeHe6BeNKal560a9Axxd89ybP+tVXNkrMMp2nyqSAOpLszKiaG+YOEDhfG+b6e3O F+tA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=46n4LaD4ZyMBoEv7QyqZkVx2QkFYWM4XtM2ZRYBTQAc=; b=Ols2MXyZnCqWs9d7UOOTXdBRgBz6/C9pFbsRWTv2tH/KsVXTDrUzz5bmq/cIx/2V5m CIwAzQ0SCgCHzOraRkpKyaMjRfmiB+OWjw3gDlfCcvzpSQZfib6m5Hpj6xKsttIWKRKF 8NaadEJKjN1VKJV77/h2iQGDCO7aMP6r/091ptUo2h47IPPsnZvJd42+N/Dc66rS/r82 rZLe4g53tTbbG25TpYUNLuwSWOFsvNYwomeeq+SrTpyFzPBW+aPdFNNdDvM1903WmPiP w5BcWDOOAXJbyt871g5usNYpGdFfEIhSsgwP8Z6M2rmnt5Mgv64at55r34/5VmJZd1Na 17hw== X-Gm-Message-State: AOAM533hXByGgNoAZ3Ptb4RWmXXZuXqk2O0f6fNmV8fo8+YuTcwM0VES EwQEuTwtfZdqHTcTHhpSS0shdw== X-Google-Smtp-Source: ABdhPJz5pYDeTwmHDRpO+vYbnSvTuSh+CQZhIr3yipQ9zMZblDzDsedgRSWYZw/JHp+eFKWo6H5jLA== X-Received: by 2002:a5d:59a2:: with SMTP id p2mr4078620wrr.304.1644945004462; Tue, 15 Feb 2022 09:10:04 -0800 (PST) Received: from localhost.localdomain (cpc78119-cwma10-2-0-cust590.7-3.cable.virginm.net. [81.96.50.79]) by smtp.gmail.com with ESMTPSA id g5sm15558474wmk.38.2022.02.15.09.10.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Feb 2022 09:10:03 -0800 (PST) From: Caleb Connolly To: caleb.connolly@linaro.org, Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Andy Gross , Bjorn Andersson , Lee Jones , Stephen Boyd , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org Cc: sumit.semwal@linaro.org, amit.pundir@linaro.org, john.stultz@linaro.org Subject: [PATCH v6 1/9] spmi: add a helper to look up an SPMI device from a device node Date: Tue, 15 Feb 2022 17:09:43 +0000 Message-Id: <20220215170951.1233375-2-caleb.connolly@linaro.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220215170951.1233375-1-caleb.connolly@linaro.org> References: <20220215170951.1233375-1-caleb.connolly@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org The helper function spmi_device_from_of() takes a device node and returns the SPMI device associated with it. This is like of_find_device_by_node but for SPMI devices. Signed-off-by: Caleb Connolly --- drivers/spmi/spmi.c | 17 +++++++++++++++++ include/linux/spmi.h | 2 ++ 2 files changed, 19 insertions(+) diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c index b37ead9e2fad..de550b777451 100644 --- a/drivers/spmi/spmi.c +++ b/drivers/spmi/spmi.c @@ -386,6 +386,23 @@ static struct bus_type spmi_bus_type = { .uevent = spmi_drv_uevent, }; +/** + * spmi_device_from_of() - get the associated SPMI device from a device node + * + * @np: device node + * + * Returns the struct spmi_device associated with a device node or NULL. + */ +inline struct spmi_device *spmi_device_from_of(struct device_node *np) +{ + struct device *dev = bus_find_device_by_of_node(&spmi_bus_type, np); + + if (dev) + return to_spmi_device(dev); + return NULL; +} +EXPORT_SYMBOL_GPL(spmi_device_from_of); + /** * spmi_controller_alloc() - Allocate a new SPMI device * @ctrl: associated controller diff --git a/include/linux/spmi.h b/include/linux/spmi.h index 729bcbf9f5ad..6ee476bc1cd6 100644 --- a/include/linux/spmi.h +++ b/include/linux/spmi.h @@ -7,6 +7,7 @@ #include #include #include +#include /* Maximum slave identifier */ #define SPMI_MAX_SLAVE_ID 16 @@ -164,6 +165,7 @@ static inline void spmi_driver_unregister(struct spmi_driver *sdrv) module_driver(__spmi_driver, spmi_driver_register, \ spmi_driver_unregister) +inline struct spmi_device *spmi_device_from_of(struct device_node *np); int spmi_register_read(struct spmi_device *sdev, u8 addr, u8 *buf); int spmi_ext_register_read(struct spmi_device *sdev, u8 addr, u8 *buf, size_t len);