From patchwork Sun Jul 23 08:37:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 705679 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 A9043C41513 for ; Sun, 23 Jul 2023 08:37:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229769AbjGWIhi (ORCPT ); Sun, 23 Jul 2023 04:37:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229469AbjGWIhf (ORCPT ); Sun, 23 Jul 2023 04:37:35 -0400 Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id BE192E7B; Sun, 23 Jul 2023 01:37:33 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.01,226,1684767600"; d="scan'208";a="170494352" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 23 Jul 2023 17:37:32 +0900 Received: from localhost.localdomain (unknown [10.226.92.13]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 061444007214; Sun, 23 Jul 2023 17:37:28 +0900 (JST) From: Biju Das To: Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: Biju Das , linux-acpi@vger.kernel.org, linux-i2c@vger.kernel.org, Wolfram Sang , Dmitry Torokhov , Geert Uytterhoeven , linux-renesas-soc@vger.kernel.org Subject: [PATCH RFC 1/2] drivers: fwnode: Extend device_get_match_data() to struct bus_type Date: Sun, 23 Jul 2023 09:37:20 +0100 Message-Id: <20230723083721.35384-2-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230723083721.35384-1-biju.das.jz@bp.renesas.com> References: <20230723083721.35384-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Extend device_get_match_data() to buses (for eg: I2C) by adding a callback device_get_match_data() to struct bus_type() and call this method as a fallback for generic fwnode based device_get_match_data(). Signed-off-by: Dmitry Torokhov Signed-off-by: Biju Das --- drivers/base/property.c | 8 +++++++- include/linux/device/bus.h | 3 +++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/base/property.c b/drivers/base/property.c index 8c40abed7852..cc0bf7bb6f3a 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1277,7 +1277,13 @@ EXPORT_SYMBOL(fwnode_graph_parse_endpoint); const void *device_get_match_data(const struct device *dev) { - return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev); + const void *data; + + data = fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev); + if (!data && dev->bus && dev->bus->get_match_data) + data = dev->bus->get_match_data(dev); + + return data; } EXPORT_SYMBOL_GPL(device_get_match_data); diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h index ae10c4322754..2e15b0ae5384 100644 --- a/include/linux/device/bus.h +++ b/include/linux/device/bus.h @@ -60,6 +60,7 @@ struct fwnode_handle; * this bus. * @dma_cleanup: Called to cleanup DMA configuration on a device on * this bus. + * @get_match_data: Called to get match data on a device on this bus. * @pm: Power management operations of this bus, callback the specific * device driver's pm-ops. * @iommu_ops: IOMMU specific operations for this bus, used to attach IOMMU @@ -102,6 +103,8 @@ struct bus_type { int (*dma_configure)(struct device *dev); void (*dma_cleanup)(struct device *dev); + const void *(*get_match_data)(const struct device *dev); + const struct dev_pm_ops *pm; const struct iommu_ops *iommu_ops;