From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christopher Bostic Subject: [PATCH v3 04/18] drivers/fsi: Add fsi master definition Date: Wed, 1 Feb 2017 10:53:44 -0600 Message-ID: <20170201165358.45415-5-cbostic@linux.vnet.ibm.com> References: <20170201165358.45415-1-cbostic@linux.vnet.ibm.com> Return-path: In-Reply-To: <20170201165358.45415-1-cbostic-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, mturquette-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, andrew-zrmu5oMJ5Fs@public.gmane.org, alistair-Y4h6yKqj69EXC2x5gXVKYQ@public.gmane.org, benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org Cc: Jeremy Kerr , Chris Bostic List-Id: devicetree@vger.kernel.org From: Jeremy Kerr Signed-off-by: Jeremy Kerr Signed-off-by: Chris Bostic --- drivers/fsi/fsi-core.c | 28 ++++++++++++++++++++++++++++ drivers/fsi/fsi-master.h | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 65 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..c7469fe 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -16,6 +16,34 @@ #include #include #include +#include + +#include "fsi-master.h" + +static DEFINE_IDA(master_ida); + +/* FSI master support */ + +int fsi_master_register(struct fsi_master *master) +{ + if (!master || !master->dev) + return -EINVAL; + + master->idx = ida_simple_get(&master_ida, 0, 0, GFP_KERNEL); + get_device(master->dev); + return 0; +} +EXPORT_SYMBOL_GPL(fsi_master_register); + +void fsi_master_unregister(struct fsi_master *master) +{ + if (!master || !master->dev) + return; + + ida_simple_remove(&master_ida, master->idx); + put_device(master->dev); +} +EXPORT_SYMBOL_GPL(fsi_master_unregister); /* FSI core & Linux bus type definitions */ 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 + +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-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html