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/**
* Copyright (c) 2011 Jonathan Cameron
*
* 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.
*
* Join together the various functionality of iio_simple_dummy driver
*/
#include <linux/kernel.h>
struct iio_dummy_accel_calibscale;
/**
* struct iio_dummy_state - device instance specific state.
* @dac_val: cache for dac value
* @single_ended_adc_val: cache for single ended adc value
* @differential_adc_val: cache for differential adc value
* @accel_val: cache for acceleration value
* @accel_calibbias: cache for acceleration calibbias
* @accel_calibscale: cache for acceleration calibscale
* @lock: lock to ensure state is consistent
* @event_irq: irq number for event line (faked)
* @event_val: cache for event theshold value
* @event_en: cache of whether event is enabled
*/
struct iio_dummy_state {
int dac_val;
int single_ended_adc_val;
int differential_adc_val[2];
int accel_val;
int accel_calibbias;
const struct iio_dummy_accel_calibscale *accel_calibscale;
struct mutex lock;
#ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS
int event_irq;
int event_val;
bool event_en;
#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS */
};
#ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS
struct iio_dev;
int iio_simple_dummy_read_event_config(struct iio_dev *indio_dev,
u64 event_code);
int iio_simple_dummy_write_event_config(struct iio_dev *indio_dev,
u64 event_code,
int state);
int iio_simple_dummy_read_event_value(struct iio_dev *indio_dev,
u64 event_code,
int *val);
int iio_simple_dummy_write_event_value(struct iio_dev *indio_dev,
u64 event_code,
int val);
int iio_simple_dummy_events_register(struct iio_dev *indio_dev);
int iio_simple_dummy_events_unregister(struct iio_dev *indio_dev);
#else /* Stubs for when events are disabled at compile time */
static inline int
iio_simple_dummy_events_register(struct iio_dev *indio_dev)
{
return 0;
};
static inline int
iio_simple_dummy_events_unregister(struct iio_dev *indio_dev)
{
return 0;
};
#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS*/
/**
* enum iio_simple_dummy_scan_elements - scan index enum
* @voltage0: the single ended voltage channel
* @diffvoltage1m2: first differential channel
* @diffvoltage3m4: second differenial channel
* @accelx: acceleration channel
*
* Enum provides convenient numbering for the scan index.
*/
enum iio_simple_dummy_scan_elements {
voltage0,
diffvoltage1m2,
diffvoltage3m4,
accelx,
};
#ifdef CONFIG_IIO_SIMPLE_DUMMY_BUFFER
int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev);
void iio_simple_dummy_unconfigure_buffer(struct iio_dev *indio_dev);
#else
static inline int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
{
return 0;
};
static inline
void iio_simple_dummy_unconfigure_buffer(struct iio_dev *indio_dev)
{};
#endif /* CONFIG_IIO_SIMPLE_DUMMY_BUFFER */
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