Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756334AbcCaJjY (ORCPT ); Thu, 31 Mar 2016 05:39:24 -0400 Received: from mga09.intel.com ([134.134.136.24]:8177 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755948AbcCaJiL (ORCPT ); Thu, 31 Mar 2016 05:38:11 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,421,1455004800"; d="scan'208";a="945123683" From: Octavian Purdila To: "Rafael J. Wysocki" , Len Brown , Matt Fleming , Mark Brown , Wolfram Sang Cc: Joel Becker , Christoph Hellwig , linux-acpi@vger.kernel.org, linux-efi@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, irina.tirdea@intel.com, Octavian Purdila Subject: [RFC PATCH 09/10] acpi: add support for configfs Date: Thu, 31 Mar 2016 12:37:05 +0300 Message-Id: <1459417026-6697-10-git-send-email-octavian.purdila@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1459417026-6697-1-git-send-email-octavian.purdila@intel.com> References: <1459417026-6697-1-git-send-email-octavian.purdila@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3436 Lines: 114 Register the ACPI subsystem with configfs. Signed-off-by: Octavian Purdila --- Documentation/ABI/testing/configfs-acpi | 7 ++++++ MAINTAINERS | 1 + drivers/acpi/Kconfig | 9 ++++++++ drivers/acpi/Makefile | 1 + drivers/acpi/configfs.c | 39 +++++++++++++++++++++++++++++++++ 5 files changed, 57 insertions(+) create mode 100644 Documentation/ABI/testing/configfs-acpi create mode 100644 drivers/acpi/configfs.c diff --git a/Documentation/ABI/testing/configfs-acpi b/Documentation/ABI/testing/configfs-acpi new file mode 100644 index 0000000..0c806aa --- /dev/null +++ b/Documentation/ABI/testing/configfs-acpi @@ -0,0 +1,7 @@ +What: /config/acpi +Date: April 2016 +KernelVersion: 4.6 +Contact: linux-acpi@vger.kernel.org +Description: + This represents the ACPI subsystem entry point directory. It + contains sub-groups corresponding to ACPI configurable options. diff --git a/MAINTAINERS b/MAINTAINERS index 6ee06ea..2f1538d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -283,6 +283,7 @@ F: include/linux/acpi.h F: include/acpi/ F: Documentation/acpi/ F: Documentation/ABI/testing/sysfs-bus-acpi +F: Documentation/ABI/testing/configfs-acpi F: drivers/pci/*acpi* F: drivers/pci/*/*acpi* F: drivers/pci/*/*/*acpi* diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 82b96ee..7d02816 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -521,4 +521,13 @@ config XPOWER_PMIC_OPREGION endif +config ACPI_CONFIGFS + tristate "ACPI configfs support" + select CONFIGFS_FS + default n + help + Select this option to enable support for ACPI configuration from + userspace. The configurable ACPI groups will be visible under + /config/acpi, assuming configfs is mounted under /config. + endif # ACPI diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index cb648a4..50ceee1 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -97,5 +97,6 @@ obj-$(CONFIG_ACPI_EXTLOG) += acpi_extlog.o obj-$(CONFIG_PMIC_OPREGION) += pmic/intel_pmic.o obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o obj-$(CONFIG_XPOWER_PMIC_OPREGION) += pmic/intel_pmic_xpower.o +obj-$(CONFIG_ACPI_CONFIGFS) += configfs.o video-objs += acpi_video.o video_detect.o diff --git a/drivers/acpi/configfs.c b/drivers/acpi/configfs.c new file mode 100644 index 0000000..96aa3d8 --- /dev/null +++ b/drivers/acpi/configfs.c @@ -0,0 +1,39 @@ +/* + * ACPI configfs support + * + * Copyright (c) 2015 Intel Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include +#include +#include +#include + +static int __init acpi_configfs_init(void) +{ + int ret; + struct config_group *root = &acpi_configfs.su_group; + + config_group_init(root); + + ret = configfs_register_subsystem(&acpi_configfs); + if (ret) + return ret; + + return 0; +} +module_init(acpi_configfs_init); + +static void __exit acpi_configfs_exit(void) +{ + configfs_unregister_subsystem(&acpi_configfs); +} +module_exit(acpi_configfs_exit); + +MODULE_AUTHOR("Octavian Purdila "); +MODULE_DESCRIPTION("ACPI configfs support"); +MODULE_LICENSE("GPL v2"); -- 1.9.1