From: Jeremy Kerr <jk@xxxxxxxxxx> Signed-off-by: Jeremy Kerr <jk@xxxxxxxxxx> Signed-off-by: Chris Bostic <cbostic@xxxxxxxxxx> --- drivers/fsi/fsi-core.c | 20 ++++++++++++++++++++ drivers/fsi/fsi-master.h | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) create mode 100644 drivers/fsi/fsi-master.h diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 3d55bd5..ce9428d 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -17,6 +17,26 @@ #include <linux/fsi.h> #include <linux/module.h> +#include "fsi-master.h" + +static atomic_t master_idx = ATOMIC_INIT(-1); + +/* FSI master support */ + +int fsi_master_register(struct fsi_master *master) +{ + master->idx = atomic_inc_return(&master_idx); + get_device(master->dev); + return 0; +} +EXPORT_SYMBOL_GPL(fsi_master_register); + +void fsi_master_unregister(struct fsi_master *master) +{ + put_device(master->dev); +} +EXPORT_SYMBOL_GPL(fsi_master_unregister); + /* FSI core & Linux bus type definitions */ static int fsi_bus_match(struct device *dev, struct device_driver *drv) diff --git a/drivers/fsi/fsi-master.h b/drivers/fsi/fsi-master.h new file mode 100644 index 0000000..e75a810 --- /dev/null +++ b/drivers/fsi/fsi-master.h @@ -0,0 +1,37 @@ +/* + * 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 (*read)(struct fsi_master *, int link, + uint8_t slave, uint32_t addr, + void *val, size_t size); + int (*write)(struct fsi_master *, int link, + uint8_t slave, uint32_t addr, + const void *val, size_t size); +}; + +extern int fsi_master_register(struct fsi_master *master); +extern void fsi_master_unregister(struct fsi_master *master); + +#endif /* DRIVERS_FSI_MASTER_H */ -- 1.8.2.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html