if (err)
goto err;
- for (i = 0; i < components; i++)
+ for (i = 0; i < components; i++) {
edev->component[i].number = -1;
+ edev->component[i].slot = -1;
+ edev->component[i].power_status = 1;
+ }
mutex_lock(&container_list_lock);
list_add_tail(&edev->node, &container_list);
static const struct attribute_group *enclosure_component_groups[];
/**
- * enclosure_component_register - add a particular component to an enclosure
+ * enclosure_component_alloc - prepare a new enclosure component
* @edev: the enclosure to add the component
* @num: the device number
* @type: the type of component being added
* @name: an optional name to appear in sysfs (leave NULL if none)
*
- * Registers the component. The name is optional for enclosures that
- * give their components a unique name. If not, leave the field NULL
- * and a name will be assigned.
+ * The name is optional for enclosures that give their components a unique
+ * name. If not, leave the field NULL and a name will be assigned.
*
* Returns a pointer to the enclosure component or an error.
*/
struct enclosure_component *
-enclosure_component_register(struct enclosure_device *edev,
- unsigned int number,
- enum enclosure_component_type type,
- const char *name)
+enclosure_component_alloc(struct enclosure_device *edev,
+ unsigned int number,
+ enum enclosure_component_type type,
+ const char *name)
{
struct enclosure_component *ecomp;
struct device *cdev;
- int err, i;
+ int i;
char newname[COMPONENT_NAME_SIZE];
if (number >= edev->components)
cdev->release = enclosure_component_release;
cdev->groups = enclosure_component_groups;
+ return ecomp;
+}
+EXPORT_SYMBOL_GPL(enclosure_component_alloc);
+
+/**
+ * enclosure_component_register - publishes an initialized enclosure component
+ * @ecomp: component to add
+ *
+ * Returns 0 on successful registration, releases the component otherwise
+ */
+int enclosure_component_register(struct enclosure_component *ecomp)
+{
+ struct device *cdev;
+ int err;
+
+ cdev = &ecomp->cdev;
err = device_register(cdev);
if (err) {
ecomp->number = -1;
put_device(cdev);
- return ERR_PTR(err);
+ return err;
}
- return ecomp;
+ return 0;
}
EXPORT_SYMBOL_GPL(enclosure_component_register);
}
static DEVICE_ATTR_RO(components);
+static ssize_t id_show(struct device *cdev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct enclosure_device *edev = to_enclosure_device(cdev);
+
+ if (edev->cb->show_id)
+ return edev->cb->show_id(edev, buf);
+ return -EINVAL;
+}
+static DEVICE_ATTR_RO(id);
+
static struct attribute *enclosure_class_attrs[] = {
&dev_attr_components.attr,
+ &dev_attr_id.attr,
NULL,
};
ATTRIBUTE_GROUPS(enclosure_class);
return count;
}
+static ssize_t get_component_power_status(struct device *cdev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+ struct enclosure_component *ecomp = to_enclosure_component(cdev);
+
+ if (edev->cb->get_power_status)
+ edev->cb->get_power_status(edev, ecomp);
+ return snprintf(buf, 40, "%s\n", ecomp->power_status ? "on" : "off");
+}
+
+static ssize_t set_component_power_status(struct device *cdev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+ struct enclosure_component *ecomp = to_enclosure_component(cdev);
+ int val;
+
+ if (strncmp(buf, "on", 2) == 0 &&
+ (buf[2] == '\n' || buf[2] == '\0'))
+ val = 1;
+ else if (strncmp(buf, "off", 3) == 0 &&
+ (buf[3] == '\n' || buf[3] == '\0'))
+ val = 0;
+ else
+ return -EINVAL;
+
+ if (edev->cb->set_power_status)
+ edev->cb->set_power_status(edev, ecomp, val);
+ return count;
+}
+
static ssize_t get_component_type(struct device *cdev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, 40, "%s\n", enclosure_type[ecomp->type]);
}
+static ssize_t get_component_slot(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct enclosure_component *ecomp = to_enclosure_component(cdev);
+ int slot;
+
+ /* if the enclosure does not override then use 'number' as a stand-in */
+ if (ecomp->slot >= 0)
+ slot = ecomp->slot;
+ else
+ slot = ecomp->number;
+
+ return snprintf(buf, 40, "%d\n", slot);
+}
static DEVICE_ATTR(fault, S_IRUGO | S_IWUSR, get_component_fault,
set_component_fault);
set_component_active);
static DEVICE_ATTR(locate, S_IRUGO | S_IWUSR, get_component_locate,
set_component_locate);
+static DEVICE_ATTR(power_status, S_IRUGO | S_IWUSR, get_component_power_status,
+ set_component_power_status);
static DEVICE_ATTR(type, S_IRUGO, get_component_type, NULL);
+static DEVICE_ATTR(slot, S_IRUGO, get_component_slot, NULL);
static struct attribute *enclosure_component_attrs[] = {
&dev_attr_fault.attr,
&dev_attr_status.attr,
&dev_attr_active.attr,
&dev_attr_locate.attr,
+ &dev_attr_power_status.attr,
&dev_attr_type.attr,
+ &dev_attr_slot.attr,
NULL
};
ATTRIBUTE_GROUPS(enclosure_component);
projects / cascardo / linux.git / blobdiff