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path: root/drivers/staging/iio/iio_simple_dummy.c
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Diffstat (limited to 'drivers/staging/iio/iio_simple_dummy.c')
-rw-r--r--drivers/staging/iio/iio_simple_dummy.c210
1 files changed, 185 insertions, 25 deletions
diff --git a/drivers/staging/iio/iio_simple_dummy.c b/drivers/staging/iio/iio_simple_dummy.c
index bf78e6f0311f..e4520213f627 100644
--- a/drivers/staging/iio/iio_simple_dummy.c
+++ b/drivers/staging/iio/iio_simple_dummy.c
@@ -69,6 +69,34 @@ static const struct iio_event_spec iio_dummy_event = {
.mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE),
};
+/*
+ * simple step detect event - triggered when a step is detected
+ */
+static const struct iio_event_spec step_detect_event = {
+ .type = IIO_EV_TYPE_CHANGE,
+ .dir = IIO_EV_DIR_NONE,
+ .mask_separate = BIT(IIO_EV_INFO_ENABLE),
+};
+
+/*
+ * simple transition event - triggered when the reported running confidence
+ * value rises above a threshold value
+ */
+static const struct iio_event_spec iio_running_event = {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE),
+};
+
+/*
+ * simple transition event - triggered when the reported walking confidence
+ * value falls under a threshold value
+ */
+static const struct iio_event_spec iio_walking_event = {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE),
+};
#endif
/*
@@ -211,10 +239,44 @@ static const struct iio_chan_spec iio_dummy_channels[] = {
{
.type = IIO_VOLTAGE,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .scan_index = -1, /* No buffer support */
.output = 1,
.indexed = 1,
.channel = 0,
},
+ {
+ .type = IIO_STEPS,
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_ENABLE) |
+ BIT(IIO_CHAN_INFO_CALIBHEIGHT),
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+ .scan_index = -1, /* No buffer support */
+#ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS
+ .event_spec = &step_detect_event,
+ .num_event_specs = 1,
+#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS */
+ },
+ {
+ .type = IIO_ACTIVITY,
+ .modified = 1,
+ .channel2 = IIO_MOD_RUNNING,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+ .scan_index = -1, /* No buffer support */
+#ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS
+ .event_spec = &iio_running_event,
+ .num_event_specs = 1,
+#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS */
+ },
+ {
+ .type = IIO_ACTIVITY,
+ .modified = 1,
+ .channel2 = IIO_MOD_WALKING,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+ .scan_index = -1, /* No buffer support */
+#ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS
+ .event_spec = &iio_walking_event,
+ .num_event_specs = 1,
+#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS */
+ },
};
/**
@@ -263,24 +325,55 @@ static int iio_dummy_read_raw(struct iio_dev *indio_dev,
break;
}
break;
+ case IIO_CHAN_INFO_PROCESSED:
+ switch (chan->type) {
+ case IIO_STEPS:
+ *val = st->steps;
+ ret = IIO_VAL_INT;
+ break;
+ case IIO_ACTIVITY:
+ switch (chan->channel2) {
+ case IIO_MOD_RUNNING:
+ *val = st->activity_running;
+ ret = IIO_VAL_INT;
+ break;
+ case IIO_MOD_WALKING:
+ *val = st->activity_walking;
+ ret = IIO_VAL_INT;
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ break;
case IIO_CHAN_INFO_OFFSET:
/* only single ended adc -> 7 */
*val = 7;
ret = IIO_VAL_INT;
break;
case IIO_CHAN_INFO_SCALE:
- switch (chan->differential) {
- case 0:
- /* only single ended adc -> 0.001333 */
- *val = 0;
- *val2 = 1333;
- ret = IIO_VAL_INT_PLUS_MICRO;
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ switch (chan->differential) {
+ case 0:
+ /* only single ended adc -> 0.001333 */
+ *val = 0;
+ *val2 = 1333;
+ ret = IIO_VAL_INT_PLUS_MICRO;
+ break;
+ case 1:
+ /* all differential adc channels ->
+ * 0.000001344 */
+ *val = 0;
+ *val2 = 1344;
+ ret = IIO_VAL_INT_PLUS_NANO;
+ }
+ break;
+ default:
break;
- case 1:
- /* all differential adc channels -> 0.000001344 */
- *val = 0;
- *val2 = 1344;
- ret = IIO_VAL_INT_PLUS_NANO;
}
break;
case IIO_CHAN_INFO_CALIBBIAS:
@@ -298,6 +391,27 @@ static int iio_dummy_read_raw(struct iio_dev *indio_dev,
*val2 = 33;
ret = IIO_VAL_INT_PLUS_NANO;
break;
+ case IIO_CHAN_INFO_ENABLE:
+ switch (chan->type) {
+ case IIO_STEPS:
+ *val = st->steps_enabled;
+ ret = IIO_VAL_INT;
+ break;
+ default:
+ break;
+ }
+ break;
+ case IIO_CHAN_INFO_CALIBHEIGHT:
+ switch (chan->type) {
+ case IIO_STEPS:
+ *val = st->height;
+ ret = IIO_VAL_INT;
+ break;
+ default:
+ break;
+ }
+ break;
+
default:
break;
}
@@ -330,14 +444,45 @@ static int iio_dummy_write_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_RAW:
- if (chan->output == 0)
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ if (chan->output == 0)
+ return -EINVAL;
+
+ /* Locking not required as writing single value */
+ mutex_lock(&st->lock);
+ st->dac_val = val;
+ mutex_unlock(&st->lock);
+ return 0;
+ default:
return -EINVAL;
-
- /* Locking not required as writing single value */
- mutex_lock(&st->lock);
- st->dac_val = val;
- mutex_unlock(&st->lock);
- return 0;
+ }
+ case IIO_CHAN_INFO_PROCESSED:
+ switch (chan->type) {
+ case IIO_STEPS:
+ mutex_lock(&st->lock);
+ st->steps = val;
+ mutex_unlock(&st->lock);
+ return 0;
+ case IIO_ACTIVITY:
+ if (val < 0)
+ val = 0;
+ if (val > 100)
+ val = 100;
+ switch (chan->channel2) {
+ case IIO_MOD_RUNNING:
+ st->activity_running = val;
+ return 0;
+ case IIO_MOD_WALKING:
+ st->activity_walking = val;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
case IIO_CHAN_INFO_CALIBSCALE:
mutex_lock(&st->lock);
/* Compare against table - hard matching here */
@@ -356,6 +501,24 @@ static int iio_dummy_write_raw(struct iio_dev *indio_dev,
st->accel_calibbias = val;
mutex_unlock(&st->lock);
return 0;
+ case IIO_CHAN_INFO_ENABLE:
+ switch (chan->type) {
+ case IIO_STEPS:
+ mutex_lock(&st->lock);
+ st->steps_enabled = val;
+ mutex_unlock(&st->lock);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_CALIBHEIGHT:
+ switch (chan->type) {
+ case IIO_STEPS:
+ st->height = val;
+ return 0;
+ default:
+ return -EINVAL;
+ }
default:
return -EINVAL;
@@ -395,6 +558,9 @@ static int iio_dummy_init_device(struct iio_dev *indio_dev)
st->accel_val = 34;
st->accel_calibbias = -7;
st->accel_calibscale = &dummy_scales[0];
+ st->steps = 47;
+ st->activity_running = 98;
+ st->activity_walking = 4;
return 0;
}
@@ -475,13 +641,7 @@ static int iio_dummy_probe(int index)
if (ret < 0)
goto error_free_device;
- /*
- * Configure buffered capture support and register the channels with the
- * buffer, but avoid the output channel being registered by reducing the
- * number of channels by 1.
- */
- ret = iio_simple_dummy_configure_buffer(indio_dev,
- iio_dummy_channels, 5);
+ ret = iio_simple_dummy_configure_buffer(indio_dev);
if (ret < 0)
goto error_unregister_events;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.