arch/arm/mach-feroceon-kw2/kw2_family/boardEnv/mvBoardEnvSysfs.c

/*******************************************************************************
Copyright (C) Marvell International Ltd. and its affiliates

This software file (the "File") is owned and distributed by Marvell
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********************************************************************************
Marvell GPL License Option

If you received this File from Marvell, you may opt to use, redistribute and/or
modify this File in accordance with the terms and conditions of the General
Public License Version 2, June 1991 (the "GPL License"), a copy of which is
available along with the File in the license.txt file or by writing to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
on the worldwide web at http://www.gnu.org/licenses/gpl.txt.

THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
DISCLAIMED.  The GPL License provides additional details about this warranty
disclaimer.
*******************************************************************************/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/netdevice.h>

#include "boardEnv/mvBoardEnvLib.h"

static ssize_t mvPonType(char *buf)
{
  MV_U32 ponType;
  int    off = 0;

  ponType = mvBoardPonConfigGet();

  if (ponType == BOARD_EPON_CONFIG) 
    off += sprintf(buf+off, "epon\n");
  else if (ponType == BOARD_GPON_CONFIG) 
    off += sprintf(buf+off, "gpon\n");

  return off;
}

static ssize_t mvBoardType(char *buf)
{
  MV_U32 boardType;
  int    off = 0;

  boardType = mvBoardIdGet();

  if (boardType == DB_88F6535_BP_ID) 
    off += sprintf(buf+off, "db_board\n");
  else if (boardType == RD_88F6510_SFU_ID) 
    off += sprintf(buf+off, "rd_board\n");
  
  return off;
}

static ssize_t mvBoardEnvShow(struct device *dev, 
				              struct device_attribute *attr, char *buf)
{
  const char*     name = attr->attr.name;

  if (!capable(CAP_NET_ADMIN))
  	return -EPERM;

  if (!strcmp(name, "pon_type")) 
    return(mvPonType(buf));
  else if (!strcmp(name, "board_type")) 
    return(mvBoardType(buf));

  return(0);
}

static ssize_t mvBoardEnvStore(struct device *dev, 
                               struct device_attribute *attr, 
                               const char *buf, size_t len)
{
  return(0);
}

static DEVICE_ATTR(pon_type,   S_IRUSR, mvBoardEnvShow, mvBoardEnvStore);
static DEVICE_ATTR(board_type, S_IRUSR, mvBoardEnvShow, mvBoardEnvStore);

static struct attribute *mvBoardEnvAttrs[] = {
	&dev_attr_pon_type.attr,
    &dev_attr_board_type.attr,
	NULL
};

static struct attribute_group mvBoardEnvGroup = {
	.name = "board",
	.attrs = mvBoardEnvAttrs,
};

int __devinit mvBoardEnvSysfsInit(void)
{
		int err;
		struct device *pd;

		pd = bus_find_device_by_name(&platform_bus_type, NULL, "boardEnv");
		if (!pd) {
			platform_device_register_simple("boardEnv", -1, NULL, 0);
			pd = bus_find_device_by_name(&platform_bus_type, NULL, "boardEnv");
		}

		if (!pd) {
			printk(KERN_ERR"%s: cannot find board device\n", __FUNCTION__);
			pd = &platform_bus;
		}

		err = sysfs_create_group(&pd->kobj, &mvBoardEnvGroup);
		if (err) {
			printk(KERN_INFO "sysfs group failed %d\n", err);
			goto out;
		}
out:
		return err;
}

module_init(mvBoardEnvSysfsInit); 

MODULE_AUTHOR("Oren Ben-Hayun");
MODULE_DESCRIPTION("sysfs for Marvell Board Env");
MODULE_LICENSE("GPL");