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[2620:137:e000::1:20]) by mx.google.com with ESMTP id o4-20020a655bc4000000b004a4677291e5si52628670pgr.606.2023.01.23.06.44.28; Mon, 23 Jan 2023 06:44:41 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass (test mode) header.i=@axis.com header.s=axis-central1 header.b=PanAXpHf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=axis.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231651AbjAWOcs (ORCPT + 99 others); Mon, 23 Jan 2023 09:32:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230520AbjAWOco (ORCPT ); Mon, 23 Jan 2023 09:32:44 -0500 Received: from smtp1.axis.com (smtp1.axis.com [195.60.68.17]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C516C673; Mon, 23 Jan 2023 06:32:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axis.com; q=dns/txt; s=axis-central1; t=1674484362; x=1706020362; h=from:date:subject:mime-version:content-transfer-encoding: message-id:to:cc; bh=1RiHrwj6ISB7lKtNwWNe0bcD7KzheIvmO/6WEMs8K5k=; b=PanAXpHfYvkoUSB4r4BNj818WVY5h/V3Aq1oaiW6Tp67j/D+MvqjxdiK TfJsxOAiOZlI6OQMCW0jkCF8Fsjpub4SrWFRa9fyWfL8BSlSghpeb76sF LrI2DGO1oi/quavQeWXhoVL+5o/h2ynIZzbG30/RgCg0g7DnjegKTtjtk 1xnHuddvmBX921Vt4/QlAHUpxc0wiOnuDkuZY9aaqwHGyZ+ILyLcr/MaR yQkGu72Bp1mRt73L93A/mijwD3XvnYjNnidZYOYVqxKLnr4eN57KN9NgP w57X59e95wQ895QQ/F298+S0ondpgH0/2omXlQxcwo6tbhLm+c374/ZNI A==; From: Vincent Whitchurch Date: Mon, 23 Jan 2023 15:32:31 +0100 Subject: [PATCH] mfd: Add Simple PCI MFD driver MIME-Version: 1.0 Message-ID: <20230120-simple-mfd-pci-v1-1-c46b3d6601ef@axis.com> X-B4-Tracking: v=1; b=H4sIAH+azmMC/x2NywqDMBAAf0X27MKatgf7K+Ihj01daNKQFSmI/ 270OAPD7KBchRXe3Q6VN1H55QZD34FfbP4wSmgMhsyDBkOoksqXMcWAxQu+npHC6EYK0UOLnFVG V232y5WtqVy2VI7yvzfTfBwny19zpHYAAAA= To: Lee Jones CC: , , , Vincent Whitchurch , X-Mailer: b4 0.11.2 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_PASS, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1755824869318434697?= X-GMAIL-MSGID: =?utf-8?q?1755824869318434697?= Add a PCI driver which registers all child nodes specified in the devicetree. It will allow platform devices to be used on virtual systems which already support PCI and devicetree, such as UML with virt-pci. The driver has no id_table by default; user space needs to provide one using the new_id mechanism in sysfs. Signed-off-by: Vincent Whitchurch --- drivers/mfd/Kconfig | 11 +++++++++++ drivers/mfd/Makefile | 1 + drivers/mfd/simple-mfd-pci.c | 21 +++++++++++++++++++++ 3 files changed, 33 insertions(+) --- base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2 change-id: 20230120-simple-mfd-pci-54f0d9b90dfc Best regards, diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 30db49f31866..1e325334e9ae 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1277,6 +1277,17 @@ config MFD_SIMPLE_MFD_I2C sub-devices represented by child nodes in Device Tree will be subsequently registered. +config MFD_SIMPLE_MFD_PCI + tristate "Simple Multi-Functional Device support (PCI)" + depends on PCI + depends on OF || COMPILE_TEST + help + This enables support for a PCI driver for which any sub-devices + represented by child nodes in the devicetree will be registered. + + The driver does not bind to any devices by default; that should + be done via sysfs using new_id. + config MFD_SL28CPLD tristate "Kontron sl28cpld Board Management Controller" depends on I2C diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 457471478a93..7ae329039a13 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -268,6 +268,7 @@ obj-$(CONFIG_MFD_QCOM_PM8008) += qcom-pm8008.o obj-$(CONFIG_SGI_MFD_IOC3) += ioc3.o obj-$(CONFIG_MFD_SIMPLE_MFD_I2C) += simple-mfd-i2c.o +obj-$(CONFIG_MFD_SIMPLE_MFD_PCI) += simple-mfd-pci.o obj-$(CONFIG_MFD_SMPRO) += smpro-core.o obj-$(CONFIG_MFD_INTEL_M10_BMC) += intel-m10-bmc.o diff --git a/drivers/mfd/simple-mfd-pci.c b/drivers/mfd/simple-mfd-pci.c new file mode 100644 index 000000000000..c5b2540e924a --- /dev/null +++ b/drivers/mfd/simple-mfd-pci.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include + +static int simple_mfd_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + return devm_of_platform_populate(&pdev->dev); +} + +static struct pci_driver simple_mfd_pci_driver = { + /* No id_table, use new_id in sysfs */ + .name = "simple-mfd-pci", + .probe = simple_mfd_pci_probe, +}; + +module_pci_driver(simple_mfd_pci_driver); + +MODULE_LICENSE("GPL");