From patchwork Mon Feb 22 13:07:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Scally X-Patchwork-Id: 12098579 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97A6EC433DB for ; Mon, 22 Feb 2021 13:11:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C04264E29 for ; Mon, 22 Feb 2021 13:11:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230185AbhBVNLl (ORCPT ); Mon, 22 Feb 2021 08:11:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231421AbhBVNIe (ORCPT ); Mon, 22 Feb 2021 08:08:34 -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 ED772C06178B; Mon, 22 Feb 2021 05:07:53 -0800 (PST) Received: by mail-wr1-x42f.google.com with SMTP id 7so19034845wrz.0; Mon, 22 Feb 2021 05:07:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=5idc3XlcuWB3pMgqllBLms0ZvbmbONztYRrH6tSskHE=; b=Hx3bsx6H8y7xVcYZDpbxZeP8JECWhmUKvIGyI83ARoWFy+oYGRVInyjqRQlnRiKO1/ bj+8JO7L0LzuUhrh1JJ2Ka3lInyJ8USfMhZ+OgPGhSJEIb97kRXL+Qv9Yy2YaLjbcMZa KwB5js/vAp7LdtrIeBuW8wTrRzezBAN1PCM03uLYB492O1m6mti4jNwqsL1Mh6YFCRYx K6X/jwgG3JYWf5nJqJ3vYYUCJQo8SkIY8/0qUA54lDMO7wDt5I2Iw3V2NEhRCs9aM81T Rz20VGnjx8THh/vRjCGTzy5QbR5geon3+ivyIFw5+OPLnnXxttaqOhWEzykhdYlF46p0 gbQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=5idc3XlcuWB3pMgqllBLms0ZvbmbONztYRrH6tSskHE=; b=ooeVGkaGOMEgLauYA4hfqoF0kbimXjp2qncN0Hjgy4FeqbbK93zRzFNJcjfTEdnjA8 Rp3KE18aNGGuQ+ozKq6GhVFEJBtdZsLW1YNij4NW4wVJXb3+Pe3robTgc1r+JNKtO9nS gY5oB8TBYEFtlJUZ680etkXswJQ8o6AwBQhR7u1Hj1o1iuOQKGWaJkopIo7wGEuDybNB wNzGMFc0ZHJiwI9Gi5g5/0vtPf+566IuiXWQoCMqpE1Vy/GYPj4/lalOVxEG4L0oElc4 2ayijvkGVEi9WiaCL55kS6nXl8gUeQ2gMHgJRyG3ITAAl19pElQTOFVKStgrBbC+BxQk TUkg== X-Gm-Message-State: AOAM531qss4PPxqmHvIL9eaHFrUipF2wkYJ3Yp5SzTPTcX9tiiZ3aqBG dOEyxoJ/LezFVTb4NO+3hZc= X-Google-Smtp-Source: ABdhPJyH+lZSFLDstr8Nhk8znbAULSqN9viQ8iTlO8ZY4Wk3+ciIVfL/6CAU3DA9WMbU3cq3PtBMiQ== X-Received: by 2002:adf:f584:: with SMTP id f4mr1959882wro.311.1613999272804; Mon, 22 Feb 2021 05:07:52 -0800 (PST) Received: from valhalla.home ([2.31.224.123]) by smtp.gmail.com with ESMTPSA id t198sm26575828wmt.7.2021.02.22.05.07.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Feb 2021 05:07:52 -0800 (PST) From: Daniel Scally To: tfiga@chromium.org, sakari.ailus@linux.intel.com, rajmohan.mani@intel.com, rjw@rjwysocki.net, lenb@kernel.org, mika.westerberg@linux.intel.com, linus.walleij@linaro.org, bgolaszewski@baylibre.com, wsa@kernel.org, lee.jones@linaro.org Cc: andy.shevchenko@linux.intel.com, kieran.bingham+renesas@ideasonboard.com, laurent.pinchart@ideasonboard.com, hdegoede@redhat.com, mgross@linux.intel.com, luzmaximilian@gmail.com, robert.moore@intel.com, erik.kaneda@intel.com, me@fabwu.ch, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, platform-driver-x86@vger.kernel.org, devel@acpica.org, Andy Shevchenko Subject: [PATCH v3 3/6] i2c: core: Add a format macro for I2C device names Date: Mon, 22 Feb 2021 13:07:32 +0000 Message-Id: <20210222130735.1313443-4-djrscally@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210222130735.1313443-1-djrscally@gmail.com> References: <20210222130735.1313443-1-djrscally@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org Some places in the kernel allow users to map resources to a device using device name (for example, in the struct gpiod_lookup_table). Currently this involves waiting for the I2C client to have been registered so we can use dev_name(&client->dev). We want to add a function to allow users to refer to an I2C device by name before it has been instantiated, so create a macro for the format that's accessible outside the I2C layer and use it in i2c_dev_set_name(). Suggested-by: Andy Shevchenko Reviewed-by: Laurent Pinchart Reviewed-by: Sakari Ailus Reviewed-by: Andy Shevchenko Signed-off-by: Daniel Scally Acked-by: Wolfram Sang # for changing I2C core --- Changes in v3: - None drivers/i2c/i2c-core-base.c | 4 ++-- include/linux/i2c.h | 3 +++ 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 63ebf722a424..547b8926cac8 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -811,12 +811,12 @@ static void i2c_dev_set_name(struct i2c_adapter *adap, struct acpi_device *adev = ACPI_COMPANION(&client->dev); if (info && info->dev_name) { - dev_set_name(&client->dev, "i2c-%s", info->dev_name); + dev_set_name(&client->dev, I2C_DEV_NAME_FORMAT, info->dev_name); return; } if (adev) { - dev_set_name(&client->dev, "i2c-%s", acpi_dev_name(adev)); + dev_set_name(&client->dev, I2C_DEV_NAME_FORMAT, acpi_dev_name(adev)); return; } diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 56622658b215..4d40a4b46810 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -39,6 +39,9 @@ enum i2c_slave_event; typedef int (*i2c_slave_cb_t)(struct i2c_client *client, enum i2c_slave_event event, u8 *val); +/* I2C Device Name Format - to maintain consistency outside the i2c layer */ +#define I2C_DEV_NAME_FORMAT "i2c-%s" + /* I2C Frequency Modes */ #define I2C_MAX_STANDARD_MODE_FREQ 100000 #define I2C_MAX_FAST_MODE_FREQ 400000