From patchwork Thu Mar 3 04:00:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Caleb Connolly X-Patchwork-Id: 12767010 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 38DC8C43217 for ; Thu, 3 Mar 2022 04:01:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229640AbiCCECG (ORCPT ); Wed, 2 Mar 2022 23:02:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229639AbiCCEB4 (ORCPT ); Wed, 2 Mar 2022 23:01:56 -0500 Received: from mail-wr1-x436.google.com (mail-wr1-x436.google.com [IPv6:2a00:1450:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 715C715D386 for ; Wed, 2 Mar 2022 20:01:11 -0800 (PST) Received: by mail-wr1-x436.google.com with SMTP id p9so5749837wra.12 for ; Wed, 02 Mar 2022 20:01:11 -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=ZNtoqbDUGtHmHijR08iUHerJBM6e4EL1UE8Eq/E/EqolAHaEGOh5zyme9Auu4DmJqD Eb+gmhfZcbr8s1Z9KkBuEWuCpEnappFyQIAehk3Fgn8OLXkfuthhSiNgX+EIJA1ogGWQ 07heE7wok3mrewOnW1yXkixvQs8upXv/t2AhmY2ad9wwg8KeKnjM88eWFdyvuhO0JAZO 4UGH5mJEafwQPsKDsDKd9dZP8rXOJUGDf/LP3Ob0aLkKUlA5vOO5Qci+gdGj+Bt7Ylh5 dZHigZyIOk/Dye9wEfYabwB2hMCQkmvgXcVDgvqRCYqE6HHqtwG0fx7ahivp7s4jg+Jx EQFQ== 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=OxC7IwN14YpAqx8RcC67ReGq6ukECeAEQ9tFxdPDiQr6xuJKSIsCtslTjlciFGsm5v tK8ejupWFeGsHDytU3yjdlviqoy8PT6HD8xa3/MkJm+WXBQYotFMuY5lRj/Y3D2PAlQV SRuZ7n36izdy2U2aaBceBlOKppH+hT1Jo1TQ14E42j0Uzl6A7hL4u+QJiTNBK3oEJWUZ F8ONglkdZppMok/E7nG+X6eAElkxYp78hWPtzX4f2GKGcAUpyOMxW5FKSfINQa21g6z4 EXdlA8yCmysBmJYZXXenMOwVPEbYSnvnIr6mrLq+nNToTNRNWLRHBc38maVrAzLpl0tn RJDA== X-Gm-Message-State: AOAM530YJjRbR2Kt3mr1XXQ37MANpyrzbLkFHCeVKIFofegEayxuGhtp nb1R+vSC8zSYT9WZyVuyduK5AA== X-Google-Smtp-Source: ABdhPJytykpDR6JjP/UzejuXDa93KOA+DH52lE2d0GGqd4g9/85jEFVIK+N6FhO6lxqwkUoXBEvC1g== X-Received: by 2002:a5d:6485:0:b0:1ef:971b:367 with SMTP id o5-20020a5d6485000000b001ef971b0367mr14887918wri.318.1646280070049; Wed, 02 Mar 2022 20:01:10 -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 r16-20020a5d4e50000000b001f0075f4ca1sm702615wrt.105.2022.03.02.20.01.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Mar 2022 20:01:09 -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 v9 1/9] spmi: add a helper to look up an SPMI device from a device node Date: Thu, 3 Mar 2022 04:00:27 +0000 Message-Id: <20220303040035.1454103-2-caleb.connolly@linaro.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220303040035.1454103-1-caleb.connolly@linaro.org> References: <20220303040035.1454103-1-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);