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path: root/drivers/iio/dac/ad5686.c
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Diffstat (limited to 'drivers/iio/dac/ad5686.c')
-rw-r--r--drivers/iio/dac/ad5686.c93
1 files changed, 87 insertions, 6 deletions
diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index 89c5f089ae7f..1fc0c5642209 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -70,6 +70,8 @@ static ssize_t ad5686_write_dac_powerdown(struct iio_dev *indio_dev,
bool readin;
int ret;
struct ad5686_state *st = iio_priv(indio_dev);
+ unsigned int val, ref_bit_msk;
+ u8 shift;
ret = strtobool(buf, &readin);
if (ret)
@@ -80,9 +82,24 @@ static ssize_t ad5686_write_dac_powerdown(struct iio_dev *indio_dev,
else
st->pwr_down_mask &= ~(0x3 << (chan->channel * 2));
- ret = st->write(st, AD5686_CMD_POWERDOWN_DAC, 0,
- st->pwr_down_mask & st->pwr_down_mode);
+ switch (st->chip_info->regmap_type) {
+ case AD5686_REGMAP:
+ shift = 0;
+ ref_bit_msk = 0;
+ break;
+ case AD5693_REGMAP:
+ shift = 13;
+ ref_bit_msk = AD5693_REF_BIT_MSK;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ val = ((st->pwr_down_mask & st->pwr_down_mode) << shift);
+ if (!st->use_internal_vref)
+ val |= ref_bit_msk;
+ ret = st->write(st, AD5686_CMD_POWERDOWN_DAC, 0, val);
return ret ? ret : len;
}
@@ -175,6 +192,11 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = {
.ext_info = ad5686_ext_info, \
}
+#define DECLARE_AD5693_CHANNELS(name, bits, _shift) \
+static struct iio_chan_spec name[] = { \
+ AD5868_CHANNEL(0, 0, bits, _shift), \
+}
+
#define DECLARE_AD5686_CHANNELS(name, bits, _shift) \
static struct iio_chan_spec name[] = { \
AD5868_CHANNEL(0, 1, bits, _shift), \
@@ -200,72 +222,112 @@ DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0);
DECLARE_AD5686_CHANNELS(ad5684_channels, 12, 4);
DECLARE_AD5686_CHANNELS(ad5685r_channels, 14, 2);
DECLARE_AD5686_CHANNELS(ad5686_channels, 16, 0);
+DECLARE_AD5693_CHANNELS(ad5693_channels, 16, 0);
+DECLARE_AD5693_CHANNELS(ad5692r_channels, 14, 2);
+DECLARE_AD5693_CHANNELS(ad5691r_channels, 12, 4);
static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
[ID_AD5671R] = {
.channels = ad5672_channels,
.int_vref_mv = 2500,
.num_channels = 8,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5672R] = {
.channels = ad5672_channels,
.int_vref_mv = 2500,
.num_channels = 8,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5675R] = {
.channels = ad5676_channels,
.int_vref_mv = 2500,
.num_channels = 8,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5676] = {
.channels = ad5676_channels,
.num_channels = 8,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5676R] = {
.channels = ad5676_channels,
.int_vref_mv = 2500,
.num_channels = 8,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5684] = {
.channels = ad5684_channels,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5684R] = {
.channels = ad5684_channels,
.int_vref_mv = 2500,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5685R] = {
.channels = ad5685r_channels,
.int_vref_mv = 2500,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5686] = {
.channels = ad5686_channels,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5686R] = {
.channels = ad5686_channels,
.int_vref_mv = 2500,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
+ },
+ [ID_AD5691R] = {
+ .channels = ad5691r_channels,
+ .int_vref_mv = 2500,
+ .num_channels = 1,
+ .regmap_type = AD5693_REGMAP,
+ },
+ [ID_AD5692R] = {
+ .channels = ad5692r_channels,
+ .int_vref_mv = 2500,
+ .num_channels = 1,
+ .regmap_type = AD5693_REGMAP,
+ },
+ [ID_AD5693] = {
+ .channels = ad5693_channels,
+ .num_channels = 1,
+ .regmap_type = AD5693_REGMAP,
+ },
+ [ID_AD5693R] = {
+ .channels = ad5693_channels,
+ .int_vref_mv = 2500,
+ .num_channels = 1,
+ .regmap_type = AD5693_REGMAP,
},
[ID_AD5694] = {
.channels = ad5684_channels,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5694R] = {
.channels = ad5684_channels,
.int_vref_mv = 2500,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5696] = {
.channels = ad5686_channels,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
[ID_AD5696R] = {
.channels = ad5686_channels,
.int_vref_mv = 2500,
.num_channels = 4,
+ .regmap_type = AD5686_REGMAP,
},
};
@@ -276,7 +338,9 @@ int ad5686_probe(struct device *dev,
{
struct ad5686_state *st;
struct iio_dev *indio_dev;
- int ret, voltage_uv = 0;
+ unsigned int val, ref_bit_msk;
+ u8 cmd;
+ int ret, i, voltage_uv = 0;
indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
if (indio_dev == NULL)
@@ -310,7 +374,8 @@ int ad5686_probe(struct device *dev,
st->vref_mv = st->chip_info->int_vref_mv;
/* Set all the power down mode for all channels to 1K pulldown */
- st->pwr_down_mode = 0x55;
+ for (i = 0; i < st->chip_info->num_channels; i++)
+ st->pwr_down_mode |= (0x01 << (i * 2));
indio_dev->dev.parent = dev;
indio_dev->name = name;
@@ -319,8 +384,24 @@ int ad5686_probe(struct device *dev,
indio_dev->channels = st->chip_info->channels;
indio_dev->num_channels = st->chip_info->num_channels;
- ret = st->write(st, AD5686_CMD_INTERNAL_REFER_SETUP,
- 0, !!voltage_uv);
+ switch (st->chip_info->regmap_type) {
+ case AD5686_REGMAP:
+ cmd = AD5686_CMD_INTERNAL_REFER_SETUP;
+ ref_bit_msk = 0;
+ break;
+ case AD5693_REGMAP:
+ cmd = AD5686_CMD_CONTROL_REG;
+ ref_bit_msk = AD5693_REF_BIT_MSK;
+ st->use_internal_vref = !voltage_uv;
+ break;
+ default:
+ ret = -EINVAL;
+ goto error_disable_reg;
+ }
+
+ val = (voltage_uv | ref_bit_msk);
+
+ ret = st->write(st, cmd, 0, !!val);
if (ret)
goto error_disable_reg;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-23 20:37:13 +0000