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/**
* @file mesubdevice.h
*
* @brief Provides the subdevice base class.
* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
* @author Guenter Gebhardt
*/
#ifndef _MESUBDEVICE_H_
#define _MESUBDEVICE_H_
#include <linux/list.h>
#include "metypes.h"
#include "meioctl.h"
#include "meslock.h"
# include <linux/workqueue.h>
#ifdef __KERNEL__
/**
* @brief Macro used to enter a subdevice.
*/
#define ME_SUBDEVICE_ENTER \
{ \
int err; \
err = me_slock_enter(&instance->base.lock, filep); \
if(err){ \
PERROR("Cannot enter subdevice.\n"); \
return err; \
} \
}
/**
* @brief Macro used to exit a subdevice.
*/
#define ME_SUBDEVICE_EXIT \
{\
int err; \
err = me_slock_exit(&instance->base.lock, filep); \
if(err){ \
PERROR("Cannot exit subdevice.\n"); \
return err; \
} \
}
/**
* @brief The subdevice base class.
*/
typedef struct me_subdevice {
/* Attributes */
struct list_head list; /**< Enables the subdevice to be added to a dynamic list. */
me_slock_t lock; /**< Used by user application in order to lock the subdevice for exclusive usage. */
/* Methods */
int (*me_subdevice_io_irq_start) (struct me_subdevice * subdevice,
struct file * filep,
int channel,
int irq_source,
int irq_edge, int irq_arg, int flags);
int (*me_subdevice_io_irq_wait) (struct me_subdevice * subdevice,
struct file * filep,
int channel,
int *irq_count,
int *value, int time_out, int flags);
int (*me_subdevice_io_irq_stop) (struct me_subdevice * subdevice,
struct file * filep,
int channel, int flags);
int (*me_subdevice_io_reset_subdevice) (struct me_subdevice * subdevice,
struct file * filep, int flags);
int (*me_subdevice_io_single_config) (struct me_subdevice * subdevice,
struct file * filep,
int channel,
int single_config,
int ref,
int trig_chan,
int trig_type,
int trig_edge, int flags);
int (*me_subdevice_io_single_read) (struct me_subdevice * subdevice,
struct file * filep,
int channel,
int *value,
int time_out, int flags);
int (*me_subdevice_io_single_write) (struct me_subdevice * subdevice,
struct file * filep,
int channel,
int value,
int time_out, int flags);
int (*me_subdevice_io_stream_config) (struct me_subdevice * subdevice,
struct file * filep,
meIOStreamConfig_t * config_list,
int count,
meIOStreamTrigger_t * trigger,
int fifo_irq_threshold,
int flags);
int (*me_subdevice_io_stream_new_values) (struct me_subdevice *
subdevice,
struct file * filep,
int time_out, int *count,
int flags);
int (*me_subdevice_io_stream_read) (struct me_subdevice * subdevice,
struct file * filep,
int read_mode,
int *values, int *count, int flags);
int (*me_subdevice_io_stream_start) (struct me_subdevice * subdevice,
struct file * filep,
int start_mode,
int time_out, int flags);
int (*me_subdevice_io_stream_status) (struct me_subdevice * subdevice,
struct file * filep,
int wait,
int *status,
int *count, int flags);
int (*me_subdevice_io_stream_stop) (struct me_subdevice * subdevice,
struct file * filep,
int stop_mode, int flags);
int (*me_subdevice_io_stream_write) (struct me_subdevice * subdevice,
struct file * filep,
int write_mode,
int *values,
int *count, int flags);
int (*me_subdevice_lock_subdevice) (struct me_subdevice * subdevice,
struct file * filep,
int lock, int flags);
int (*me_subdevice_query_number_channels) (struct me_subdevice *
subdevice, int *number);
int (*me_subdevice_query_number_ranges) (struct me_subdevice *
subdevice, int unit,
int *count);
int (*me_subdevice_query_range_by_min_max) (struct me_subdevice *
subdevice, int unit,
int *min, int *max,
int *maxdata, int *range);
int (*me_subdevice_query_range_info) (struct me_subdevice * subdevice,
int range,
int *unit,
int *min, int *max, int *maxdata);
int (*me_subdevice_query_subdevice_type) (struct me_subdevice *
subdevice, int *type,
int *subtype);
int (*me_subdevice_query_subdevice_caps) (struct me_subdevice *
subdevice, int *caps);
int (*me_subdevice_query_subdevice_caps_args) (struct me_subdevice *
subdevice, int cap,
int *args, int count);
int (*me_subdevice_query_timer) (struct me_subdevice * subdevice,
int timer,
int *base_frequency,
long long *min_ticks,
long long *max_ticks);
int (*me_subdevice_config_load) (struct me_subdevice * subdevice,
me_cfg_device_entry_t * config);
void (*me_subdevice_destructor) (struct me_subdevice * subdevice);
} me_subdevice_t;
/**
* @brief Initializes a subdevice structure.
*
* @param subdevice The subdevice structure to initialize.
* @return 0 on success.
*/
int me_subdevice_init(me_subdevice_t * subdevice);
/**
* @brief Deinitializes a subdevice structure.
*
* @param subdevice The subdevice structure to initialize.
*/
void me_subdevice_deinit(me_subdevice_t * subdevice);
#endif
#endif
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