diff options
author | Carlos Chinea <carlos.chinea@nokia.com> | 2010-04-16 20:01:02 +0400 |
---|---|---|
committer | Carlos Chinea <carlos.chinea@nokia.com> | 2012-01-05 17:42:13 +0400 |
commit | a056ab8c7a00a0ffc52e9573bf01257004c2d08c (patch) | |
tree | c5ef0df1efcbbe03469257f2cfb4be1fb05809f1 /drivers/hsi/hsi_boardinfo.c | |
parent | 805a6af8dba5dfdd35ec35dc52ec0122400b2610 (diff) |
HSI: hsi: Introducing HSI framework
Adds HSI framework in to the linux kernel.
High Speed Synchronous Serial Interface (HSI) is a
serial interface mainly used for connecting application
engines (APE) with cellular modem engines (CMT) in cellular
handsets.
HSI provides multiplexing for up to 16 logical channels,
low-latency and full duplex communication.
Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/hsi/hsi_boardinfo.c')
-rw-r--r-- | drivers/hsi/hsi_boardinfo.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/hsi/hsi_boardinfo.c b/drivers/hsi/hsi_boardinfo.c new file mode 100644 index 000000000000..e56bc6da5f98 --- /dev/null +++ b/drivers/hsi/hsi_boardinfo.c @@ -0,0 +1,62 @@ +/* + * HSI clients registration interface + * + * Copyright (C) 2010 Nokia Corporation. All rights reserved. + * + * Contact: Carlos Chinea <carlos.chinea@nokia.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., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ +#include <linux/hsi/hsi.h> +#include <linux/list.h> +#include <linux/slab.h> +#include "hsi_core.h" + +/* + * hsi_board_list is only used internally by the HSI framework. + * No one else is allowed to make use of it. + */ +LIST_HEAD(hsi_board_list); +EXPORT_SYMBOL_GPL(hsi_board_list); + +/** + * hsi_register_board_info - Register HSI clients information + * @info: Array of HSI clients on the board + * @len: Length of the array + * + * HSI clients are statically declared and registered on board files. + * + * HSI clients will be automatically registered to the HSI bus once the + * controller and the port where the clients wishes to attach are registered + * to it. + * + * Return -errno on failure, 0 on success. + */ +int __init hsi_register_board_info(struct hsi_board_info const *info, + unsigned int len) +{ + struct hsi_cl_info *cl_info; + + cl_info = kzalloc(sizeof(*cl_info) * len, GFP_KERNEL); + if (!cl_info) + return -ENOMEM; + + for (; len; len--, info++, cl_info++) { + cl_info->info = *info; + list_add_tail(&cl_info->list, &hsi_board_list); + } + + return 0; +} |