v4.19.13 snapshot.
diff --git a/include/linux/enclosure.h b/include/linux/enclosure.h
new file mode 100644
index 0000000..a4cf57c
--- /dev/null
+++ b/include/linux/enclosure.h
@@ -0,0 +1,146 @@
+/*
+ * Enclosure Services
+ *
+ * Copyright (C) 2008 James Bottomley <James.Bottomley@HansenPartnership.com>
+ *
+**-----------------------------------------------------------------------------
+**
+** 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.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+*/
+#ifndef _LINUX_ENCLOSURE_H_
+#define _LINUX_ENCLOSURE_H_
+
+#include <linux/device.h>
+#include <linux/list.h>
+
+/* A few generic types ... taken from ses-2 */
+enum enclosure_component_type {
+ ENCLOSURE_COMPONENT_DEVICE = 0x01,
+ ENCLOSURE_COMPONENT_CONTROLLER_ELECTRONICS = 0x07,
+ ENCLOSURE_COMPONENT_SCSI_TARGET_PORT = 0x14,
+ ENCLOSURE_COMPONENT_SCSI_INITIATOR_PORT = 0x15,
+ ENCLOSURE_COMPONENT_ARRAY_DEVICE = 0x17,
+ ENCLOSURE_COMPONENT_SAS_EXPANDER = 0x18,
+};
+
+/* ses-2 common element status */
+enum enclosure_status {
+ ENCLOSURE_STATUS_UNSUPPORTED = 0,
+ ENCLOSURE_STATUS_OK,
+ ENCLOSURE_STATUS_CRITICAL,
+ ENCLOSURE_STATUS_NON_CRITICAL,
+ ENCLOSURE_STATUS_UNRECOVERABLE,
+ ENCLOSURE_STATUS_NOT_INSTALLED,
+ ENCLOSURE_STATUS_UNKNOWN,
+ ENCLOSURE_STATUS_UNAVAILABLE,
+ /* last element for counting purposes */
+ ENCLOSURE_STATUS_MAX
+};
+
+/* SFF-8485 activity light settings */
+enum enclosure_component_setting {
+ ENCLOSURE_SETTING_DISABLED = 0,
+ ENCLOSURE_SETTING_ENABLED = 1,
+ ENCLOSURE_SETTING_BLINK_A_ON_OFF = 2,
+ ENCLOSURE_SETTING_BLINK_A_OFF_ON = 3,
+ ENCLOSURE_SETTING_BLINK_B_ON_OFF = 6,
+ ENCLOSURE_SETTING_BLINK_B_OFF_ON = 7,
+};
+
+struct enclosure_device;
+struct enclosure_component;
+struct enclosure_component_callbacks {
+ void (*get_status)(struct enclosure_device *,
+ struct enclosure_component *);
+ int (*set_status)(struct enclosure_device *,
+ struct enclosure_component *,
+ enum enclosure_status);
+ void (*get_fault)(struct enclosure_device *,
+ struct enclosure_component *);
+ int (*set_fault)(struct enclosure_device *,
+ struct enclosure_component *,
+ enum enclosure_component_setting);
+ void (*get_active)(struct enclosure_device *,
+ struct enclosure_component *);
+ int (*set_active)(struct enclosure_device *,
+ struct enclosure_component *,
+ enum enclosure_component_setting);
+ void (*get_locate)(struct enclosure_device *,
+ struct enclosure_component *);
+ int (*set_locate)(struct enclosure_device *,
+ struct enclosure_component *,
+ enum enclosure_component_setting);
+ void (*get_power_status)(struct enclosure_device *,
+ struct enclosure_component *);
+ int (*set_power_status)(struct enclosure_device *,
+ struct enclosure_component *,
+ int);
+ int (*show_id)(struct enclosure_device *, char *buf);
+};
+
+
+struct enclosure_component {
+ void *scratch;
+ struct device cdev;
+ struct device *dev;
+ enum enclosure_component_type type;
+ int number;
+ int fault;
+ int active;
+ int locate;
+ int slot;
+ enum enclosure_status status;
+ int power_status;
+};
+
+struct enclosure_device {
+ void *scratch;
+ struct list_head node;
+ struct device edev;
+ struct enclosure_component_callbacks *cb;
+ int components;
+ struct enclosure_component component[0];
+};
+
+static inline struct enclosure_device *
+to_enclosure_device(struct device *dev)
+{
+ return container_of(dev, struct enclosure_device, edev);
+}
+
+static inline struct enclosure_component *
+to_enclosure_component(struct device *dev)
+{
+ return container_of(dev, struct enclosure_component, cdev);
+}
+
+struct enclosure_device *
+enclosure_register(struct device *, const char *, int,
+ struct enclosure_component_callbacks *);
+void enclosure_unregister(struct enclosure_device *);
+struct enclosure_component *
+enclosure_component_alloc(struct enclosure_device *, unsigned int,
+ enum enclosure_component_type, const char *);
+int enclosure_component_register(struct enclosure_component *);
+int enclosure_add_device(struct enclosure_device *enclosure, int component,
+ struct device *dev);
+int enclosure_remove_device(struct enclosure_device *, struct device *);
+struct enclosure_device *enclosure_find(struct device *dev,
+ struct enclosure_device *start);
+int enclosure_for_each_device(int (*fn)(struct enclosure_device *, void *),
+ void *data);
+
+#endif /* _LINUX_ENCLOSURE_H_ */