Use extended channel info attributes for the powerdown and powerdown_mode
attributes.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/staging/iio/dac/ad5064.c | 92 ++++++++++++++++----------------------
1 files changed, 39 insertions(+), 53 deletions(-)
diff --git a/drivers/staging/iio/dac/ad5064.c b/drivers/staging/iio/dac/ad5064.c
index 049a855..202f927 100644
--- a/drivers/staging/iio/dac/ad5064.c
+++ b/drivers/staging/iio/dac/ad5064.c
@@ -86,6 +86,29 @@ enum ad5064_type {
ID_AD5064_1,
};
+static ssize_t ad5064_read_powerdown_mode(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, char *buf);
+static ssize_t ad5064_write_powerdown_mode(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, const char *buf, size_t len);
+static ssize_t ad5064_read_dac_powerdown(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, char *buf);
+static ssize_t ad5064_write_dac_powerdown(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, const char *buf, size_t len);
+
+static struct iio_chan_spec_ext_info ad5064_ext_info[] = {
+ {
+ .name = "powerdown",
+ .read = ad5064_read_dac_powerdown,
+ .write = ad5064_write_dac_powerdown,
+ },
+ {
+ .name = "powerdown_mode",
+ .read = ad5064_read_powerdown_mode,
+ .write = ad5064_write_powerdown_mode,
+ },
+ { },
+};
+
#define AD5064_CHANNEL(chan, bits) { \
.type = IIO_VOLTAGE, \
.indexed = 1, \
@@ -93,7 +116,8 @@ enum ad5064_type {
.channel = (chan), \
.info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
.address = AD5064_ADDR_DAC(chan), \
- .scan_type = IIO_ST('u', (bits), 16, 20 - (bits)) \
+ .scan_type = IIO_ST('u', (bits), 16, 20 - (bits)), \
+ .ext_info = ad5064_ext_info, \
}
static const struct ad5064_chip_info ad5064_chip_info_tbl[] = {
@@ -160,22 +184,18 @@ static const char ad5064_powerdown_modes[][15] = {
[AD5064_LDAC_PWRDN_3STATE] = "three_state",
};
-static ssize_t ad5064_read_powerdown_mode(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t ad5064_read_powerdown_mode(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, char *buf)
{
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ad5064_state *st = iio_priv(indio_dev);
return sprintf(buf, "%s\n",
- ad5064_powerdown_modes[st->pwr_down_mode[this_attr->address]]);
+ ad5064_powerdown_modes[st->pwr_down_mode[chan->channel]]);
}
-static ssize_t ad5064_write_powerdown_mode(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t len)
+static ssize_t ad5064_write_powerdown_mode(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, const char *buf, size_t len)
{
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ad5064_state *st = iio_priv(indio_dev);
unsigned int mode, i;
int ret;
@@ -192,31 +212,26 @@ static ssize_t ad5064_write_powerdown_mode(struct device *dev,
return -EINVAL;
mutex_lock(&indio_dev->mlock);
- st->pwr_down_mode[this_attr->address] = mode;
+ st->pwr_down_mode[chan->channel] = mode;
- ret = ad5064_sync_powerdown_mode(st, this_attr->address);
+ ret = ad5064_sync_powerdown_mode(st, chan->channel);
mutex_unlock(&indio_dev->mlock);
return ret ? ret : len;
}
-static ssize_t ad5064_read_dac_powerdown(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+static ssize_t ad5064_read_dac_powerdown(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, char *buf)
{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ad5064_state *st = iio_priv(indio_dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- return sprintf(buf, "%d\n", st->pwr_down[this_attr->address]);
+ return sprintf(buf, "%d\n", st->pwr_down[chan->channel]);
}
-static ssize_t ad5064_write_dac_powerdown(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t len)
+static ssize_t ad5064_write_dac_powerdown(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, const char *buf, size_t len)
{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ad5064_state *st = iio_priv(indio_dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
bool pwr_down;
int ret;
@@ -225,9 +240,9 @@ static ssize_t ad5064_write_dac_powerdown(struct device *dev,
return ret;
mutex_lock(&indio_dev->mlock);
- st->pwr_down[this_attr->address] = pwr_down;
+ st->pwr_down[chan->channel] = pwr_down;
- ret = ad5064_sync_powerdown_mode(st, this_attr->address);
+ ret = ad5064_sync_powerdown_mode(st, chan->channel);
mutex_unlock(&indio_dev->mlock);
return ret ? ret : len;
}
@@ -235,36 +250,7 @@ static ssize_t ad5064_write_dac_powerdown(struct device *dev,
static IIO_CONST_ATTR(out_voltage_powerdown_mode_available,
"1kohm_to_gnd 100kohm_to_gnd three_state");
-#define IIO_DEV_ATTR_DAC_POWERDOWN_MODE(_chan) \
- IIO_DEVICE_ATTR(out_voltage##_chan##_powerdown_mode, \
- S_IRUGO | S_IWUSR, \
- ad5064_read_powerdown_mode, \
- ad5064_write_powerdown_mode, _chan);
-
-#define IIO_DEV_ATTR_DAC_POWERDOWN(_chan) \
- IIO_DEVICE_ATTR(out_voltage##_chan##_powerdown, \
- S_IRUGO | S_IWUSR, \
- ad5064_read_dac_powerdown, \
- ad5064_write_dac_powerdown, _chan)
-
-static IIO_DEV_ATTR_DAC_POWERDOWN(0);
-static IIO_DEV_ATTR_DAC_POWERDOWN_MODE(0);
-static IIO_DEV_ATTR_DAC_POWERDOWN(1);
-static IIO_DEV_ATTR_DAC_POWERDOWN_MODE(1);
-static IIO_DEV_ATTR_DAC_POWERDOWN(2);
-static IIO_DEV_ATTR_DAC_POWERDOWN_MODE(2);
-static IIO_DEV_ATTR_DAC_POWERDOWN(3);
-static IIO_DEV_ATTR_DAC_POWERDOWN_MODE(3);
-
static struct attribute *ad5064_attributes[] = {
- &iio_dev_attr_out_voltage0_powerdown.dev_attr.attr,
- &iio_dev_attr_out_voltage1_powerdown.dev_attr.attr,
- &iio_dev_attr_out_voltage2_powerdown.dev_attr.attr,
- &iio_dev_attr_out_voltage3_powerdown.dev_attr.attr,
- &iio_dev_attr_out_voltage0_powerdown_mode.dev_attr.attr,
- &iio_dev_attr_out_voltage1_powerdown_mode.dev_attr.attr,
- &iio_dev_attr_out_voltage2_powerdown_mode.dev_attr.attr,
- &iio_dev_attr_out_voltage3_powerdown_mode.dev_attr.attr,
&iio_const_attr_out_voltage_powerdown_mode_available.dev_attr.attr,
NULL,
};
--
1.7.9
--
To unsubscribe from this list: send the line "unsubscribe linux-iio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
