From mboxrd@z Thu Jan 1 00:00:00 1970 From: Octavian Purdila Subject: [PATCH v3 7/8] acpi: add support for configfs Date: Tue, 14 Jun 2016 18:17:25 +0300 Message-ID: <1465917446-14043-8-git-send-email-octavian.purdila@intel.com> References: <1465917446-14043-1-git-send-email-octavian.purdila@intel.com> Return-path: In-Reply-To: <1465917446-14043-1-git-send-email-octavian.purdila@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: "Rafael J . Wysocki" , Len Brown , Matt Fleming , Mark Brown , Wolfram Sang Cc: Joel Becker , 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 List-Id: linux-acpi@vger.kernel.org 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..17b19dc --- /dev/null +++ b/Documentation/ABI/testing/configfs-acpi @@ -0,0 +1,7 @@ +What: /config/acpi +Date: July 2016 +KernelVersion: 4.8 +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 16700e4..9c5365f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -288,6 +288,7 @@ 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 b7e2e77..a039433 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 251ce85..1dc2173 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -99,5 +99,6 @@ 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"); -- 2.7.4