diff options
| author | Jeremy Kerr <jk@ozlabs.org> | 2017-06-06 16:08:36 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-09 11:52:07 +0200 |
| commit | 09aecfab93b8f728c5d65d33f26055b7e726df3b (patch) | |
| tree | 07849ad0a3a42c9a608f00f49c545839e734314e /drivers/fsi/fsi-master.h | |
| parent | 9e69dd0179c346dfb5d08b8d46d5f5c9c81ab1b7 (diff) | |
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.h | 41 |
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 */ |