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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 | /* SPDX-License-Identifier: GPL-2.0-only */ /** * Copyright (c) 2011 Jonathan Cameron * * Join together the various functionality of iio_simple_dummy driver */ #ifndef _IIO_SIMPLE_DUMMY_H_ #define _IIO_SIMPLE_DUMMY_H_ #include <linux/kernel.h> struct iio_dummy_accel_calibscale; struct iio_dummy_regs; /** * 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 threshold 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; int activity_running; int activity_walking; const struct iio_dummy_accel_calibscale *accel_calibscale; struct mutex lock; struct iio_dummy_regs *regs; int steps_enabled; int steps; int height; #ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS int event_irq; int event_val; bool event_en; s64 event_timestamp; #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, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir); int iio_simple_dummy_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state); int iio_simple_dummy_read_event_value(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2); int iio_simple_dummy_write_event_value(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2); int iio_simple_dummy_events_register(struct iio_dev *indio_dev); void 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 void iio_simple_dummy_events_unregister(struct iio_dev *indio_dev) {} #endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS*/ /** * enum iio_simple_dummy_scan_elements - scan index enum * @DUMMY_INDEX_VOLTAGE_0: the single ended voltage channel * @DUMMY_INDEX_DIFFVOLTAGE_1M2: first differential channel * @DUMMY_INDEX_DIFFVOLTAGE_3M4: second differential channel * @DUMMY_INDEX_ACCELX: acceleration channel * * Enum provides convenient numbering for the scan index. */ enum iio_simple_dummy_scan_elements { DUMMY_INDEX_VOLTAGE_0, DUMMY_INDEX_DIFFVOLTAGE_1M2, DUMMY_INDEX_DIFFVOLTAGE_3M4, DUMMY_INDEX_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 */ #endif /* _IIO_SIMPLE_DUMMY_H_ */ |