Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933593AbbHJWaj (ORCPT ); Mon, 10 Aug 2015 18:30:39 -0400 Received: from mail-wi0-f169.google.com ([209.85.212.169]:38765 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932929AbbHJWaf (ORCPT ); Mon, 10 Aug 2015 18:30:35 -0400 From: Daniel Baluta To: jic23@kernel.org, jlbec@evilplan.org, linux-iio@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: lars@metafoo.de, knaack.h@gmx.de, linux-kernel@vger.kernel.org, octavian.purdila@intel.com, pebolle@tiscali.nl, patrick.porlan@intel.com, adriana.reus@intel.com, constantin.musca@intel.com, marten@intuitiveaerial.com, daniel.baluta@intel.com, cristina.opriceana@gmail.com, pmeerw@pmeerw.net, hch@lst.de, viro@zeniv.linux.org.uk, akpm@linux-foundation.org Subject: [PATCH v7 2/5] iio: core: Introduce IIO configfs support Date: Tue, 11 Aug 2015 01:42:39 +0300 Message-Id: <1439246562-17515-3-git-send-email-daniel.baluta@intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1439246562-17515-1-git-send-email-daniel.baluta@intel.com> References: <1439246562-17515-1-git-send-email-daniel.baluta@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3642 Lines: 124 This creates an IIO configfs subystem named "iio", with a default "triggers" group. Next patches will add trigger types support, allowing new triggers creation using configfs. Signed-off-by: Daniel Baluta --- drivers/iio/Kconfig | 8 +++++ drivers/iio/Makefile | 1 + drivers/iio/industrialio-configfs.c | 67 +++++++++++++++++++++++++++++++++++++ 3 files changed, 76 insertions(+) create mode 100644 drivers/iio/industrialio-configfs.c diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig index 4011eff..f2b0d77 100644 --- a/drivers/iio/Kconfig +++ b/drivers/iio/Kconfig @@ -18,6 +18,14 @@ config IIO_BUFFER Provide core support for various buffer based data acquisition methods. +config IIO_CONFIGFS + bool "Enable IIO configuration via configfs" + select CONFIGFS_FS + help + This allows configuring various IIO bits through configfs + (e.g. software triggers). For more info see + Documentation/iio/iio_configfs.txt. + if IIO_BUFFER config IIO_BUFFER_CB diff --git a/drivers/iio/Makefile b/drivers/iio/Makefile index 698afc2..dbf5f9a 100644 --- a/drivers/iio/Makefile +++ b/drivers/iio/Makefile @@ -9,6 +9,7 @@ industrialio-$(CONFIG_IIO_TRIGGER) += industrialio-trigger.o industrialio-$(CONFIG_IIO_BUFFER_CB) += buffer_cb.o obj-$(CONFIG_IIO_TRIGGERED_BUFFER) += industrialio-triggered-buffer.o +obj-$(CONFIG_IIO_CONFIGFS) += industrialio-configfs.o obj-$(CONFIG_IIO_KFIFO_BUF) += kfifo_buf.o obj-y += accel/ diff --git a/drivers/iio/industrialio-configfs.c b/drivers/iio/industrialio-configfs.c new file mode 100644 index 0000000..3edee90 --- /dev/null +++ b/drivers/iio/industrialio-configfs.c @@ -0,0 +1,67 @@ +/* + * Industrial I/O configfs bits + * + * 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 +#include + +#include + +static struct config_item_type iio_triggers_group_type = { + .ct_owner = THIS_MODULE, +}; + +static struct config_group iio_triggers_group = { + .cg_item = { + .ci_namebuf = "triggers", + .ci_type = &iio_triggers_group_type, + }, +}; + +static struct config_group *iio_root_default_groups[] = { + &iio_triggers_group, + NULL +}; + +static struct config_item_type iio_root_group_type = { + .ct_owner = THIS_MODULE, +}; + +static struct configfs_subsystem iio_configfs_subsys = { + .su_group = { + .cg_item = { + .ci_namebuf = "iio", + .ci_type = &iio_root_group_type, + }, + .default_groups = iio_root_default_groups, + }, + .su_mutex = __MUTEX_INITIALIZER(iio_configfs_subsys.su_mutex), +}; + +static int __init iio_configfs_init(void) +{ + config_group_init(&iio_triggers_group); + config_group_init(&iio_configfs_subsys.su_group); + + return configfs_register_subsystem(&iio_configfs_subsys); +} +module_init(iio_configfs_init); + +static void __exit iio_configfs_exit(void) +{ + configfs_unregister_subsystem(&iio_configfs_subsys); +} +module_exit(iio_configfs_exit); + +MODULE_AUTHOR("Daniel Baluta "); +MODULE_DESCRIPTION("Industrial I/O configfs support"); +MODULE_LICENSE("GPL v2"); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/