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/*
* OMAP Device Handler driver
*
* Copyright (C) 2010 Texas Instruments Inc.
*
* Written by Angela Stegmaier <angelabaker@ti.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
*
*/
#ifndef DEVH_H
#define DEVH_H
#include <linux/ioctl.h>
#include <linux/cdev.h>
#include <linux/semaphore.h>
#define DEVH_IOC_MAGIC 'E'
#define DEVH_IOCWAITONEVENTS _IO(DEVH_IOC_MAGIC, 0)
#define DEVH_IOCEVENTREG _IOW(DEVH_IOC_MAGIC, 1, \
struct deh_reg_event_args)
#define DEVH_IOCEVENTUNREG _IOW(DEVH_IOC_MAGIC, 2, \
struct deh_reg_event_args)
#define DEVH_IOC_MAXNR (2)
/* Device error types */
enum {
DEV_SYS_ERROR = 1,
DEV_WATCHDOG_ERROR,
};
struct omap_devh;
struct omap_devh_ops {
int (*register_notifiers)(struct omap_devh *devh);
int (*unregister_notifiers)(struct omap_devh *devh);
int (*register_event_notification)(struct omap_devh *devh,
const void __user *args);
int (*unregister_event_notification)(struct omap_devh *devh,
const void __user *args);
};
struct omap_devh_platform_data {
struct omap_devh_ops *ops;
char *name;
int proc_id;
int err_event_id;
int line_id;
struct semaphore sem_handle;
void *private_data;
};
struct omap_devh {
struct device *dev;
struct cdev cdev;
atomic_t count;
int state;
int minor;
char *name;
struct list_head event_list;
spinlock_t event_lock;
};
struct deh_reg_event_args {
int fd;
u32 event;
};
extern struct omap_devh_platform_data *devh_get_plat_data(void);
extern int devh_get_plat_data_size(void);
#endif /* DEVH_H */
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