Use extended channel info attributes for the powerdown, powerdown_mode and
powerdown_mode_available attributes.
Note that this patch moves the chip info defintions around to avoid having to use
forward declarations for the extended channel info attributes callbacks.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
Changes since v1:
* Also make powerdown_mode_available an extended info attribute
* Reorder code to avoid forward declarations
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/staging/iio/dac/ad5064.c | 188 +++++++++++++++++---------------------
1 files changed, 82 insertions(+), 106 deletions(-)
diff --git a/drivers/staging/iio/dac/ad5064.c b/drivers/staging/iio/dac/ad5064.c
index 049a855..52fef75 100644
--- a/drivers/staging/iio/dac/ad5064.c
+++ b/drivers/staging/iio/dac/ad5064.c
@@ -86,47 +86,6 @@ enum ad5064_type {
ID_AD5064_1,
};
-#define AD5064_CHANNEL(chan, bits) { \
- .type = IIO_VOLTAGE, \
- .indexed = 1, \
- .output = 1, \
- .channel = (chan), \
- .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
- .address = AD5064_ADDR_DAC(chan), \
- .scan_type = IIO_ST('u', (bits), 16, 20 - (bits)) \
-}
-
-static const struct ad5064_chip_info ad5064_chip_info_tbl[] = {
- [ID_AD5024] = {
- .shared_vref = false,
- .channel[0] = AD5064_CHANNEL(0, 12),
- .channel[1] = AD5064_CHANNEL(1, 12),
- .channel[2] = AD5064_CHANNEL(2, 12),
- .channel[3] = AD5064_CHANNEL(3, 12),
- },
- [ID_AD5044] = {
- .shared_vref = false,
- .channel[0] = AD5064_CHANNEL(0, 14),
- .channel[1] = AD5064_CHANNEL(1, 14),
- .channel[2] = AD5064_CHANNEL(2, 14),
- .channel[3] = AD5064_CHANNEL(3, 14),
- },
- [ID_AD5064] = {
- .shared_vref = false,
- .channel[0] = AD5064_CHANNEL(0, 16),
- .channel[1] = AD5064_CHANNEL(1, 16),
- .channel[2] = AD5064_CHANNEL(2, 16),
- .channel[3] = AD5064_CHANNEL(3, 16),
- },
- [ID_AD5064_1] = {
- .shared_vref = true,
- .channel[0] = AD5064_CHANNEL(0, 16),
- .channel[1] = AD5064_CHANNEL(1, 16),
- .channel[2] = AD5064_CHANNEL(2, 16),
- .channel[3] = AD5064_CHANNEL(3, 16),
- },
-};
-
static int ad5064_spi_write(struct ad5064_state *st, unsigned int cmd,
unsigned int addr, unsigned int val, unsigned int shift)
{
@@ -160,22 +119,25 @@ 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_available(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, char *buf)
+{
+ return sprintf(buf, "%s %s %s\n", ad5064_powerdown_modes[1],
+ ad5064_powerdown_modes[2], ad5064_powerdown_modes[3]);
+}
+
+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 +154,26 @@ 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;
@@ -225,54 +182,13 @@ 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;
}
-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,
-};
-
-static const struct attribute_group ad5064_attribute_group = {
- .attrs = ad5064_attributes,
-};
-
static int ad5064_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val,
@@ -331,10 +247,70 @@ static int ad5064_write_raw(struct iio_dev *indio_dev,
static const struct iio_info ad5064_info = {
.read_raw = ad5064_read_raw,
.write_raw = ad5064_write_raw,
- .attrs = &ad5064_attribute_group,
.driver_module = THIS_MODULE,
};
+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,
+ },
+ {
+ .name = "powerdown_mode_available",
+ .shared = true,
+ .read = ad5064_read_powerdown_mode_available,
+ },
+ { },
+};
+
+#define AD5064_CHANNEL(chan, bits) { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .output = 1, \
+ .channel = (chan), \
+ .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
+ .address = AD5064_ADDR_DAC(chan), \
+ .scan_type = IIO_ST('u', (bits), 16, 20 - (bits)), \
+ .ext_info = ad5064_ext_info, \
+}
+
+static const struct ad5064_chip_info ad5064_chip_info_tbl[] = {
+ [ID_AD5024] = {
+ .shared_vref = false,
+ .channel[0] = AD5064_CHANNEL(0, 12),
+ .channel[1] = AD5064_CHANNEL(1, 12),
+ .channel[2] = AD5064_CHANNEL(2, 12),
+ .channel[3] = AD5064_CHANNEL(3, 12),
+ },
+ [ID_AD5044] = {
+ .shared_vref = false,
+ .channel[0] = AD5064_CHANNEL(0, 14),
+ .channel[1] = AD5064_CHANNEL(1, 14),
+ .channel[2] = AD5064_CHANNEL(2, 14),
+ .channel[3] = AD5064_CHANNEL(3, 14),
+ },
+ [ID_AD5064] = {
+ .shared_vref = false,
+ .channel[0] = AD5064_CHANNEL(0, 16),
+ .channel[1] = AD5064_CHANNEL(1, 16),
+ .channel[2] = AD5064_CHANNEL(2, 16),
+ .channel[3] = AD5064_CHANNEL(3, 16),
+ },
+ [ID_AD5064_1] = {
+ .shared_vref = true,
+ .channel[0] = AD5064_CHANNEL(0, 16),
+ .channel[1] = AD5064_CHANNEL(1, 16),
+ .channel[2] = AD5064_CHANNEL(2, 16),
+ .channel[3] = AD5064_CHANNEL(3, 16),
+ },
+};
+
static inline unsigned int ad5064_num_vref(struct ad5064_state *st)
{
return st->chip_info->shared_vref ? 1 : AD5064_DAC_CHANNELS;
--
1.7.9
--
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