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path: root/drivers/iio/pressure/hsc030pa.c
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Diffstat (limited to 'drivers/iio/pressure/hsc030pa.c')
-rw-r--r--drivers/iio/pressure/hsc030pa.c49
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/iio/pressure/hsc030pa.c b/drivers/iio/pressure/hsc030pa.c
index d6a51f0c33..1682b90d45 100644
--- a/drivers/iio/pressure/hsc030pa.c
+++ b/drivers/iio/pressure/hsc030pa.c
@@ -22,8 +22,11 @@
#include <linux/types.h>
#include <linux/units.h>
+#include <linux/iio/buffer.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
#include <asm/unaligned.h>
@@ -297,6 +300,29 @@ static int hsc_get_measurement(struct hsc_data *data)
return 0;
}
+static irqreturn_t hsc_trigger_handler(int irq, void *private)
+{
+ struct iio_poll_func *pf = private;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct hsc_data *data = iio_priv(indio_dev);
+ int ret;
+
+ ret = hsc_get_measurement(data);
+ if (ret)
+ goto error;
+
+ memcpy(&data->scan.chan[0], &data->buffer[0], 2);
+ memcpy(&data->scan.chan[1], &data->buffer[2], 2);
+
+ iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
+ iio_get_time_ns(indio_dev));
+
+error:
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
/*
* IIO ABI expects
* value = (conv + offset) * scale
@@ -382,13 +408,29 @@ static const struct iio_chan_spec hsc_channels[] = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 14,
+ .storagebits = 16,
+ .endianness = IIO_BE,
+ },
},
{
.type = IIO_TEMP,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 11,
+ .storagebits = 16,
+ .shift = 5,
+ .endianness = IIO_BE,
+ },
},
+ IIO_CHAN_SOFT_TIMESTAMP(2),
};
static const struct iio_info hsc_info = {
@@ -406,7 +448,7 @@ int hsc_common_probe(struct device *dev, hsc_recv_fn recv)
struct hsc_data *hsc;
struct iio_dev *indio_dev;
const char *triplet;
- u64 tmp;
+ s64 tmp;
int ret;
indio_dev = devm_iio_device_alloc(dev, sizeof(*hsc));
@@ -485,6 +527,11 @@ int hsc_common_probe(struct device *dev, hsc_recv_fn recv)
indio_dev->channels = hsc->chip->channels;
indio_dev->num_channels = hsc->chip->num_channels;
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+ hsc_trigger_handler, NULL);
+ if (ret)
+ return ret;
+
return devm_iio_device_register(dev, indio_dev);
}
EXPORT_SYMBOL_NS(hsc_common_probe, IIO_HONEYWELL_HSC030PA);