From patchwork Tue May 7 00:35:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ruslan Babayev X-Patchwork-Id: 1096082 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-i2c-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=babayev.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44yggh6RfNz9s9y for ; Tue, 7 May 2019 10:38:08 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726538AbfEGAiH (ORCPT ); Mon, 6 May 2019 20:38:07 -0400 Received: from alln-iport-5.cisco.com ([173.37.142.92]:64506 "EHLO alln-iport-5.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726073AbfEGAiG (ORCPT ); Mon, 6 May 2019 20:38:06 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A0CEBADz0tBc/5JdJa1lHAEBAQQBAQcEAQGBZYIRgW0orG2HExCDWYEUAoITIzgTAQMBAQQBAQIBAm0ohUsGeRBRVwcSgyKCC61+hTeDOoFFFIEehniEVheBf4ERg1CEDYYZBIsViDiTbwmCC1aRZydulGIti3KVGYFmIYFWMxoIGxWCCIEfghsXjj8fAzCQCIJSAQE X-IronPort-AV: E=Sophos;i="5.60,439,1549929600"; d="scan'208";a="269617425" Received: from rcdn-core-10.cisco.com ([173.37.93.146]) by alln-iport-5.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 07 May 2019 00:37:47 +0000 Received: from tusi.cisco.com (tusi.cisco.com [172.24.98.27]) by rcdn-core-10.cisco.com (8.15.2/8.15.2) with ESMTP id x470bjOG019352; Tue, 7 May 2019 00:37:46 GMT From: Ruslan Babayev To: linux@armlinux.org.uk, andrew@lunn.ch, f.fainelli@gmail.com, hkallweit1@gmail.com, mika.westerberg@linux.intel.com, wsa@the-dreams.de Cc: davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, xe-linux-external@cisco.com Subject: [PATCH RFC v2 net-next 1/2] i2c: acpi: export i2c_acpi_find_adapter_by_handle Date: Mon, 6 May 2019 17:35:56 -0700 Message-Id: <20190507003557.40648-2-ruslan@babayev.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190505220524.37266-2-ruslan@babayev.com> References: <20190505220524.37266-2-ruslan@babayev.com> Reply-To: 20190505220524.37266-2-ruslan@babayev.com X-Auto-Response-Suppress: DR, OOF, AutoReply X-Outbound-SMTP-Client: 172.24.98.27, tusi.cisco.com X-Outbound-Node: rcdn-core-10.cisco.com Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org This allows drivers to lookup i2c adapters on ACPI based systems similar to of_get_i2c_adapter_by_node() with DT based systems. Signed-off-by: Ruslan Babayev Cc: xe-linux-external@cisco.com --- drivers/i2c/i2c-core-acpi.c | 3 ++- include/linux/i2c.h | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 272800692088..964687534754 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -337,7 +337,7 @@ static int i2c_acpi_find_match_device(struct device *dev, void *data) return ACPI_COMPANION(dev) == data; } -static struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) +struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) { struct device *dev; @@ -345,6 +345,7 @@ static struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) i2c_acpi_find_match_adapter); return dev ? i2c_verify_adapter(dev) : NULL; } +EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle); static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) { diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 383510b4f083..24859a26f167 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -33,6 +33,7 @@ #include #include /* for Host Notify IRQ */ #include /* for struct device_node */ +#include /* for acpi_handle */ #include /* for swab16 */ #include @@ -977,6 +978,7 @@ bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares, u32 i2c_acpi_find_bus_speed(struct device *dev); struct i2c_client *i2c_acpi_new_device(struct device *dev, int index, struct i2c_board_info *info); +struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle); #else static inline bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares, struct acpi_resource_i2c_serialbus **i2c) @@ -992,6 +994,10 @@ static inline struct i2c_client *i2c_acpi_new_device(struct device *dev, { return NULL; } +struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) +{ + return NULL; +} #endif /* CONFIG_ACPI */ #endif /* _LINUX_I2C_H */