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authorJeremy Kerr <jk@ozlabs.org>2017-06-06 16:08:36 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-09 11:52:07 +0200
commit09aecfab93b8f728c5d65d33f26055b7e726df3b (patch)
tree07849ad0a3a42c9a608f00f49c545839e734314e /drivers/fsi/fsi-master.h
parent9e69dd0179c346dfb5d08b8d46d5f5c9c81ab1b7 (diff)
downloadlinux-09aecfab93b8f728c5d65d33f26055b7e726df3b.tar.bz2
drivers/fsi: Add fsi master definition
Add a `struct fsi_master` to represent a FSI master controller. FSI master drivers register one of these structs to provide device-specific of the standard operations: read/write/term/break and link control. Includes changes from Edward A. James <eajames@us.ibm.com> & Jeremy Kerr <jk@ozlabs.org>. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@linux.vnet.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fsi/fsi-master.h')
-rw-r--r--drivers/fsi/fsi-master.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/fsi/fsi-master.h b/drivers/fsi/fsi-master.h
new file mode 100644
index 000000000000..7764b0079d28
--- /dev/null
+++ b/drivers/fsi/fsi-master.h
@@ -0,0 +1,41 @@
+/*
+ * FSI master definitions. These comprise the core <--> master interface,
+ * to allow the core to interact with the (hardware-specific) masters.
+ *
+ * Copyright (C) IBM Corporation 2016
+ *
+ * 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.
+ */
+
+#ifndef DRIVERS_FSI_MASTER_H
+#define DRIVERS_FSI_MASTER_H
+
+#include <linux/device.h>
+
+struct fsi_master {
+ struct device dev;
+ int idx;
+ int n_links;
+ int flags;
+ int (*read)(struct fsi_master *, int link, uint8_t id,
+ uint32_t addr, void *val, size_t size);
+ int (*write)(struct fsi_master *, int link, uint8_t id,
+ uint32_t addr, const void *val, size_t size);
+ int (*term)(struct fsi_master *, int link, uint8_t id);
+ int (*send_break)(struct fsi_master *, int link);
+ int (*link_enable)(struct fsi_master *, int link);
+};
+
+#define dev_to_fsi_master(d) container_of(d, struct fsi_master, dev)
+
+extern int fsi_master_register(struct fsi_master *master);
+extern void fsi_master_unregister(struct fsi_master *master);
+
+#endif /* DRIVERS_FSI_MASTER_H */