diff options
| author | Maxime Coquelin <maxime.coquelin-nonst@stericsson.com> | 2011-03-07 11:26:02 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-19 15:14:56 +0200 |
| commit | 2dfd24846ee129fb59fe640ec6e3e1f401d69a67 (patch) | |
| tree | 428c59be4fdb30debe923a4c165020aec7b71f9c /drivers/base | |
| parent | bcd841ac913fdc08179a6f51cef42b16e0d4a544 (diff) | |
Export SoC info through sysfs
Common base to export System-on-Chip related informations through sysfs.
Creation of a "socinfo" directory under /sys/.
Creation of SoC information entries.
Signed-off-by: Maxime COQUELIN <maxime.coquelin-nonst@stericsson.com>
Change-Id: I8f9cbccbed07293d26974e9df3bf1102d42e561c
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/18178
Reviewed-by: Linus WALLEIJ <linus.walleij@stericsson.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/base/Makefile | 1 | ||||
| -rw-r--r-- | drivers/base/soc.c | 79 |
3 files changed, 83 insertions, 0 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index d57e8d0fb82..372ef3afe91 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -168,4 +168,7 @@ config SYS_HYPERVISOR bool default n +config SYS_SOC + bool + endmenu diff --git a/drivers/base/Makefile b/drivers/base/Makefile index 4c5701c15f5..a0d246dcce1 100644 --- a/drivers/base/Makefile +++ b/drivers/base/Makefile @@ -18,6 +18,7 @@ ifeq ($(CONFIG_SYSFS),y) obj-$(CONFIG_MODULES) += module.o endif obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o +obj-$(CONFIG_SYS_SOC) += soc.o ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG diff --git a/drivers/base/soc.c b/drivers/base/soc.c new file mode 100644 index 00000000000..046b43bfcdb --- /dev/null +++ b/drivers/base/soc.c @@ -0,0 +1,79 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * Author: Maxime Coquelin <maxime.coquelin-nonst@stericsson.com> for ST-Ericsson. + * License terms: GNU General Public License (GPL), version 2 + */ + +#include <linux/sysfs.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/stat.h> +#include <linux/slab.h> +#include <linux/sys_soc.h> + +struct kobject *soc_object; + +ssize_t show_soc_info(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct sysfs_soc_info *si = container_of(attr, + struct sysfs_soc_info, attr); + + if (si->info) + return sprintf(buf, "%s\n", si->info); + + return si->get_info(buf, si); +} + +int __init register_sysfs_soc_info(struct sysfs_soc_info *info, int nb_info) +{ + int i, ret; + + for (i = 0; i < nb_info; i++) { + ret = sysfs_create_file(soc_object, &info[i].attr.attr); + if (ret) { + for (i -= 1; i >= 0; i--) + sysfs_remove_file(soc_object, &info[i].attr.attr); + break; + } + } + + return ret; +} + +static struct attribute *soc_attrs[] = { + NULL, +}; + +static struct attribute_group soc_attr_group = { + .attrs = soc_attrs, +}; + +int __init register_sysfs_soc(struct sysfs_soc_info *info, size_t num) +{ + int ret; + + soc_object = kobject_create_and_add("socinfo", NULL); + if (!soc_object) { + ret = -ENOMEM; + goto exit; + } + + ret = sysfs_create_group(soc_object, &soc_attr_group); + if (ret) + goto kset_exit; + + ret = register_sysfs_soc_info(info, num); + if (ret) + goto group_exit; + + return 0; + +group_exit: + sysfs_remove_group(soc_object, &soc_attr_group); +kset_exit: + kobject_put(soc_object); +exit: + return ret; +} + |