From patchwork Mon Feb 21 22:07:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Caleb Connolly X-Patchwork-Id: 12754180 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 1F269C4332F for ; Mon, 21 Feb 2022 22:08:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235144AbiBUWIX (ORCPT ); Mon, 21 Feb 2022 17:08:23 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:35294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235158AbiBUWIX (ORCPT ); Mon, 21 Feb 2022 17:08:23 -0500 Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1FEE722BEA for ; Mon, 21 Feb 2022 14:07:59 -0800 (PST) Received: by mail-wr1-x42f.google.com with SMTP id s1so2933808wrg.10 for ; Mon, 21 Feb 2022 14:07:59 -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=S9lJPgC5IiaAkUPxTOR6pCbBmqHzJ273ONgKjTf6kz6WxV5MBzqonQTVOKd1sckQXZ IDV10h7E98kCSM7jKMdSPbhics6Dgep2Ljv6hHDKWq6IYuYUBxDSFtmDh6kzKzPcS0w8 dI5yL49bUQh5MXjuLSzMecg1dQxRKWskmYsC2NlkEWIRuvfVr0eBqCqsouszfNPrFYTa fPHXCspgs9pPjOSr8UEA+nzGquf+D7RN+ZsZ2ML4JWDm4fupupDfHwnZI2c0UT9PuA+L heNeH1VNtE+4azA/CRC1BfqAwNGsfPjzUL5jlwbpehIcrABVCrJRsgtaMRQHWa+BzELA DdlA== 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=rwOEbQXpHCYQ5nCukHi1/YNalOtuVbI+3V6up3YYkqgaTGRsNYSJ0X9G0qh1HMTN0f f6JQ8NvtsbTHxCd0A02kGmjFDyT16aMqqNdSLmwv9+RofcJBtqRG4YTbIStMFXaym7a6 nkOi38Y9fuslao/B85/j019O7lC3M0926zYQQSshVUVKVZpjZyCVCQnQpMj7R3dPisQM gdGKVB1kAqloGTHqyZS+izWDSlh9kMQ3uLFWO9xcwyS9DPeEoQzWXX+mLMbGGkmZcG4f dBJMFf7oCICypRstmMsE6RPwS02p9BqsCVf8Q+DMe3NtvwGkei34W0YRmaU5QaMEVDoZ 2FQg== X-Gm-Message-State: AOAM5338QdQES1DU6bZH1YPodP7Ms2Rf60UwvcxMYM5tC0KAr8tuB8KT FZ4z6El9QDzuze5/a8Fx4UnMjw== X-Google-Smtp-Source: ABdhPJyZO6pJpT1Fi1MbU0H1hFrOr6VklHoXSDG4dhj/GdcBFoZd1SHgepz8UzU72P/BcWzOAm7fPA== X-Received: by 2002:adf:80ad:0:b0:1e3:238a:178e with SMTP id 42-20020adf80ad000000b001e3238a178emr17952135wrl.551.1645481277661; Mon, 21 Feb 2022 14:07:57 -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 w8sm51626093wre.83.2022.02.21.14.07.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Feb 2022 14:07:57 -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 v8 1/9] spmi: add a helper to look up an SPMI device from a device node Date: Mon, 21 Feb 2022 22:07:35 +0000 Message-Id: <20220221220743.541704-2-caleb.connolly@linaro.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220221220743.541704-1-caleb.connolly@linaro.org> References: <20220221220743.541704-1-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);