Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0bf54fcd authored by Octavian Purdila's avatar Octavian Purdila Committed by Rafael J. Wysocki
Browse files

ACPI: add support for configfs 



Register the ACPI subsystem with configfs.

Signed-off-by: default avatarOctavian Purdila <octavian.purdila@intel.com>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 475fb4e8

Documentation/ABI/testing/configfs-acpi

0 → 100644
+7 −0
Original line number Original line Diff line number Diff line 
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.

MAINTAINERS

+1 −0
Original line number Original line Diff line number Diff line
@@ -288,6 +288,7 @@ F: include/linux/acpi.h 
F:	include/acpi/

F:	include/acpi/

F:	Documentation/acpi/

F:	Documentation/acpi/

F:	Documentation/ABI/testing/sysfs-bus-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*

F:	drivers/pci/*/*acpi*

F:	drivers/pci/*/*/*acpi*

F:	drivers/pci/*/*/*acpi*

drivers/acpi/Kconfig

+8 −0
Original line number Original line Diff line number Diff line
@@ -524,4 +524,12 @@ config XPOWER_PMIC_OPREGION 




endif

endif





config ACPI_CONFIGFS

	tristate "ACPI configfs support"

	select CONFIGFS_FS

	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
 
endif	# ACPI

drivers/acpi/Makefile

+1 −0
Original line number Original line Diff line number Diff line
@@ -99,5 +99,6 @@ obj-$(CONFIG_ACPI_EXTLOG) += acpi_extlog.o 
obj-$(CONFIG_PMIC_OPREGION)	+= pmic/intel_pmic.o

obj-$(CONFIG_PMIC_OPREGION)	+= pmic/intel_pmic.o

obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o

obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o

obj-$(CONFIG_XPOWER_PMIC_OPREGION) += pmic/intel_pmic_xpower.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
 
video-objs			+= acpi_video.o video_detect.o

drivers/acpi/configfs.c

0 → 100644
+53 −0
Original line number Original line Diff line number Diff line 
/*

 * ACPI configfs support

 *

 * Copyright (c) 2016 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 <linux/init.h>

#include <linux/module.h>

#include <linux/configfs.h>

#include <linux/acpi.h>



static struct config_item_type acpi_root_group_type = {

	.ct_owner = THIS_MODULE,

};



static struct configfs_subsystem acpi_configfs = {

	.su_group = {

		.cg_item = {

			.ci_namebuf = "acpi",

			.ci_type = &acpi_root_group_type,

		},

	},

	.su_mutex = __MUTEX_INITIALIZER(acpi_configfs.su_mutex),

};



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 <octavian.purdila@intel.com>");

MODULE_DESCRIPTION("ACPI configfs support");

MODULE_LICENSE("GPL v2");