diff options
-rw-r--r-- | drivers/staging/iio/resolver/ad2s1210.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c index 2d7b9bfeabd3..e0bea3c68664 100644 --- a/drivers/staging/iio/resolver/ad2s1210.c +++ b/drivers/staging/iio/resolver/ad2s1210.c @@ -312,50 +312,6 @@ static int ad2s1210_reinit_excitation_frequency(struct ad2s1210_state *st, return regmap_write(st->regmap, AD2S1210_REG_SOFT_RESET, 0); } -/* read the fault register since last sample */ -static ssize_t ad2s1210_show_fault(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ad2s1210_state *st = iio_priv(dev_to_iio_dev(dev)); - unsigned int value; - int ret; - - mutex_lock(&st->lock); - ret = regmap_read(st->regmap, AD2S1210_REG_FAULT, &value); - mutex_unlock(&st->lock); - - return ret < 0 ? ret : sprintf(buf, "0x%02x\n", value); -} - -static ssize_t ad2s1210_clear_fault(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - struct ad2s1210_state *st = iio_priv(dev_to_iio_dev(dev)); - unsigned int value; - int ret; - - mutex_lock(&st->lock); - - gpiod_set_value(st->sample_gpio, 1); - /* delay (2 * tck + 20) nano seconds */ - udelay(1); - gpiod_set_value(st->sample_gpio, 0); - - ret = regmap_read(st->regmap, AD2S1210_REG_FAULT, &value); - if (ret < 0) - goto error_ret; - - gpiod_set_value(st->sample_gpio, 1); - gpiod_set_value(st->sample_gpio, 0); - -error_ret: - mutex_unlock(&st->lock); - - return ret < 0 ? ret : len; -} - static void ad2s1210_push_events(struct iio_dev *indio_dev, u8 flags, s64 timestamp) { @@ -868,9 +824,6 @@ static int ad2s1210_write_raw(struct iio_dev *indio_dev, } } -static IIO_DEVICE_ATTR(fault, 0644, - ad2s1210_show_fault, ad2s1210_clear_fault, 0); - static const struct iio_event_spec ad2s1210_position_event_spec[] = { { /* Tracking error exceeds LOT threshold fault. */ @@ -1020,15 +973,6 @@ static const struct iio_chan_spec ad2s1210_channels[] = { }, }; -static struct attribute *ad2s1210_attributes[] = { - &iio_dev_attr_fault.dev_attr.attr, - NULL, -}; - -static const struct attribute_group ad2s1210_attribute_group = { - .attrs = ad2s1210_attributes, -}; - static ssize_t event_attr_voltage_reg_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -1367,7 +1311,6 @@ static const struct iio_info ad2s1210_info = { .read_avail = ad2s1210_read_avail, .write_raw = ad2s1210_write_raw, .read_label = ad2s1210_read_label, - .attrs = &ad2s1210_attribute_group, .read_event_value = ad2s1210_read_event_value, .write_event_value = ad2s1210_write_event_value, .read_event_label = ad2s1210_read_event_label, |