diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/base/soc.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/base/soc.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/ANDROID_3.4.5/drivers/base/soc.c b/ANDROID_3.4.5/drivers/base/soc.c deleted file mode 100644 index ba29b2e7..00000000 --- a/ANDROID_3.4.5/drivers/base/soc.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2011 - * - * Author: Lee Jones <lee.jones@linaro.org> 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/idr.h> -#include <linux/spinlock.h> -#include <linux/sys_soc.h> -#include <linux/err.h> - -static DEFINE_IDA(soc_ida); -static DEFINE_SPINLOCK(soc_lock); - -static ssize_t soc_info_get(struct device *dev, - struct device_attribute *attr, - char *buf); - -struct soc_device { - struct device dev; - struct soc_device_attribute *attr; - int soc_dev_num; -}; - -static struct bus_type soc_bus_type = { - .name = "soc", -}; - -static DEVICE_ATTR(machine, S_IRUGO, soc_info_get, NULL); -static DEVICE_ATTR(family, S_IRUGO, soc_info_get, NULL); -static DEVICE_ATTR(soc_id, S_IRUGO, soc_info_get, NULL); -static DEVICE_ATTR(revision, S_IRUGO, soc_info_get, NULL); - -struct device *soc_device_to_device(struct soc_device *soc_dev) -{ - return &soc_dev->dev; -} - -static mode_t soc_attribute_mode(struct kobject *kobj, - struct attribute *attr, - int index) -{ - struct device *dev = container_of(kobj, struct device, kobj); - struct soc_device *soc_dev = container_of(dev, struct soc_device, dev); - - if ((attr == &dev_attr_machine.attr) - && (soc_dev->attr->machine != NULL)) - return attr->mode; - if ((attr == &dev_attr_family.attr) - && (soc_dev->attr->family != NULL)) - return attr->mode; - if ((attr == &dev_attr_revision.attr) - && (soc_dev->attr->revision != NULL)) - return attr->mode; - if ((attr == &dev_attr_soc_id.attr) - && (soc_dev->attr->soc_id != NULL)) - return attr->mode; - - /* Unknown or unfilled attribute. */ - return 0; -} - -static ssize_t soc_info_get(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct soc_device *soc_dev = container_of(dev, struct soc_device, dev); - - if (attr == &dev_attr_machine) - return sprintf(buf, "%s\n", soc_dev->attr->machine); - if (attr == &dev_attr_family) - return sprintf(buf, "%s\n", soc_dev->attr->family); - if (attr == &dev_attr_revision) - return sprintf(buf, "%s\n", soc_dev->attr->revision); - if (attr == &dev_attr_soc_id) - return sprintf(buf, "%s\n", soc_dev->attr->soc_id); - - return -EINVAL; - -} - -static struct attribute *soc_attr[] = { - &dev_attr_machine.attr, - &dev_attr_family.attr, - &dev_attr_soc_id.attr, - &dev_attr_revision.attr, - NULL, -}; - -static const struct attribute_group soc_attr_group = { - .attrs = soc_attr, - .is_visible = soc_attribute_mode, -}; - -static const struct attribute_group *soc_attr_groups[] = { - &soc_attr_group, - NULL, -}; - -static void soc_release(struct device *dev) -{ - struct soc_device *soc_dev = container_of(dev, struct soc_device, dev); - - kfree(soc_dev); -} - -struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr) -{ - struct soc_device *soc_dev; - int ret; - - soc_dev = kzalloc(sizeof(*soc_dev), GFP_KERNEL); - if (!soc_dev) { - ret = -ENOMEM; - goto out1; - } - - /* Fetch a unique (reclaimable) SOC ID. */ - do { - if (!ida_pre_get(&soc_ida, GFP_KERNEL)) { - ret = -ENOMEM; - goto out2; - } - - spin_lock(&soc_lock); - ret = ida_get_new(&soc_ida, &soc_dev->soc_dev_num); - spin_unlock(&soc_lock); - - } while (ret == -EAGAIN); - - if (ret) - goto out2; - - soc_dev->attr = soc_dev_attr; - soc_dev->dev.bus = &soc_bus_type; - soc_dev->dev.groups = soc_attr_groups; - soc_dev->dev.release = soc_release; - - dev_set_name(&soc_dev->dev, "soc%d", soc_dev->soc_dev_num); - - ret = device_register(&soc_dev->dev); - if (ret) - goto out3; - - return soc_dev; - -out3: - ida_remove(&soc_ida, soc_dev->soc_dev_num); -out2: - kfree(soc_dev); -out1: - return ERR_PTR(ret); -} - -/* Ensure soc_dev->attr is freed prior to calling soc_device_unregister. */ -void soc_device_unregister(struct soc_device *soc_dev) -{ - ida_remove(&soc_ida, soc_dev->soc_dev_num); - - device_unregister(&soc_dev->dev); -} - -static int __init soc_bus_register(void) -{ - return bus_register(&soc_bus_type); -} -core_initcall(soc_bus_register); - -static void __exit soc_bus_unregister(void) -{ - ida_destroy(&soc_ida); - - bus_unregister(&soc_bus_type); -} -module_exit(soc_bus_unregister); |