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path: root/drivers/iio/dac/ad5421.c
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Diffstat (limited to 'drivers/iio/dac/ad5421.c')
-rw-r--r--drivers/iio/dac/ad5421.c115
1 files changed, 56 insertions, 59 deletions
diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
index 98f24407c3c..787ef1d859c 100644
--- a/drivers/iio/dac/ad5421.c
+++ b/drivers/iio/dac/ad5421.c
@@ -75,11 +75,34 @@ struct ad5421_state {
* transfer buffers to live in their own cache lines.
*/
union {
- u32 d32;
+ __be32 d32;
u8 d8[4];
} data[2] ____cacheline_aligned;
};
+static const struct iio_event_spec ad5421_current_event[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE) |
+ BIT(IIO_EV_INFO_ENABLE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE) |
+ BIT(IIO_EV_INFO_ENABLE),
+ },
+};
+
+static const struct iio_event_spec ad5421_temp_event[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE) |
+ BIT(IIO_EV_INFO_ENABLE),
+ },
+};
+
static const struct iio_chan_spec ad5421_channels[] = {
{
.type = IIO_CURRENT,
@@ -91,14 +114,19 @@ static const struct iio_chan_spec ad5421_channels[] = {
BIT(IIO_CHAN_INFO_CALIBBIAS),
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
- .scan_type = IIO_ST('u', 16, 16, 0),
- .event_mask = IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) |
- IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING),
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 16,
+ .storagebits = 16,
+ },
+ .event_spec = ad5421_current_event,
+ .num_event_specs = ARRAY_SIZE(ad5421_current_event),
},
{
.type = IIO_TEMP,
.channel = -1,
- .event_mask = IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
+ .event_spec = ad5421_temp_event,
+ .num_event_specs = ARRAY_SIZE(ad5421_temp_event),
},
};
@@ -281,18 +309,11 @@ static inline unsigned int ad5421_get_offset(struct ad5421_state *st)
return (min * (1 << 16)) / (max - min);
}
-static inline unsigned int ad5421_get_scale(struct ad5421_state *st)
-{
- unsigned int min, max;
-
- ad5421_get_current_min_max(st, &min, &max);
- return ((max - min) * 1000) / (1 << 16);
-}
-
static int ad5421_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val, int *val2, long m)
{
struct ad5421_state *st = iio_priv(indio_dev);
+ unsigned int min, max;
int ret;
if (chan->type != IIO_CURRENT)
@@ -306,9 +327,10 @@ static int ad5421_read_raw(struct iio_dev *indio_dev,
*val = ret;
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- *val = 0;
- *val2 = ad5421_get_scale(st);
- return IIO_VAL_INT_PLUS_MICRO;
+ ad5421_get_current_min_max(st, &min, &max);
+ *val = max - min;
+ *val2 = (1 << 16) * 1000;
+ return IIO_VAL_FRACTIONAL;
case IIO_CHAN_INFO_OFFSET:
*val = ad5421_get_offset(st);
return IIO_VAL_INT;
@@ -359,15 +381,15 @@ static int ad5421_write_raw(struct iio_dev *indio_dev,
}
static int ad5421_write_event_config(struct iio_dev *indio_dev,
- u64 event_code, int state)
+ const struct iio_chan_spec *chan, enum iio_event_type type,
+ enum iio_event_direction dir, int state)
{
struct ad5421_state *st = iio_priv(indio_dev);
unsigned int mask;
- switch (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code)) {
+ switch (chan->type) {
case IIO_CURRENT:
- if (IIO_EVENT_CODE_EXTRACT_DIR(event_code) ==
- IIO_EV_DIR_RISING)
+ if (dir == IIO_EV_DIR_RISING)
mask = AD5421_FAULT_OVER_CURRENT;
else
mask = AD5421_FAULT_UNDER_CURRENT;
@@ -390,15 +412,15 @@ static int ad5421_write_event_config(struct iio_dev *indio_dev,
}
static int ad5421_read_event_config(struct iio_dev *indio_dev,
- u64 event_code)
+ const struct iio_chan_spec *chan, enum iio_event_type type,
+ enum iio_event_direction dir)
{
struct ad5421_state *st = iio_priv(indio_dev);
unsigned int mask;
- switch (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code)) {
+ switch (chan->type) {
case IIO_CURRENT:
- if (IIO_EVENT_CODE_EXTRACT_DIR(event_code) ==
- IIO_EV_DIR_RISING)
+ if (dir == IIO_EV_DIR_RISING)
mask = AD5421_FAULT_OVER_CURRENT;
else
mask = AD5421_FAULT_UNDER_CURRENT;
@@ -413,12 +435,14 @@ static int ad5421_read_event_config(struct iio_dev *indio_dev,
return (bool)(st->fault_mask & mask);
}
-static int ad5421_read_event_value(struct iio_dev *indio_dev, u64 event_code,
- int *val)
+static int ad5421_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 ret;
- switch (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code)) {
+ switch (chan->type) {
case IIO_CURRENT:
ret = ad5421_read(indio_dev, AD5421_REG_DAC_DATA);
if (ret < 0)
@@ -432,7 +456,7 @@ static int ad5421_read_event_value(struct iio_dev *indio_dev, u64 event_code,
return -EINVAL;
}
- return 0;
+ return IIO_VAL_INT;
}
static const struct iio_info ad5421_info = {
@@ -451,7 +475,7 @@ static int ad5421_probe(struct spi_device *spi)
struct ad5421_state *st;
int ret;
- indio_dev = iio_device_alloc(sizeof(*st));
+ indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
if (indio_dev == NULL) {
dev_err(&spi->dev, "Failed to allocate iio device\n");
return -ENOMEM;
@@ -484,43 +508,17 @@ static int ad5421_probe(struct spi_device *spi)
ad5421_update_ctrl(indio_dev, 0, 0);
if (spi->irq) {
- ret = request_threaded_irq(spi->irq,
+ ret = devm_request_threaded_irq(&spi->dev, spi->irq,
NULL,
ad5421_fault_handler,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"ad5421 fault",
indio_dev);
if (ret)
- goto error_free;
- }
-
- ret = iio_device_register(indio_dev);
- if (ret) {
- dev_err(&spi->dev, "Failed to register iio device: %d\n", ret);
- goto error_free_irq;
+ return ret;
}
- return 0;
-
-error_free_irq:
- if (spi->irq)
- free_irq(spi->irq, indio_dev);
-error_free:
- iio_device_free(indio_dev);
-
- return ret;
-}
-
-static int ad5421_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
-
- iio_device_unregister(indio_dev);
- if (spi->irq)
- free_irq(spi->irq, indio_dev);
- iio_device_free(indio_dev);
-
- return 0;
+ return devm_iio_device_register(&spi->dev, indio_dev);
}
static struct spi_driver ad5421_driver = {
@@ -529,7 +527,6 @@ static struct spi_driver ad5421_driver = {
.owner = THIS_MODULE,
},
.probe = ad5421_probe,
- .remove = ad5421_remove,
};
module_spi_driver(ad5421_driver);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 09:54:58 +0000