From: Dumitru Ceclan <dumitru.ceclan@xxxxxxxxxx>
This commit adds support for the AD4113 ADC.
The AD4113 is a low power, low noise, 16-bit, Σ-Δ analog-to-digital
converter (ADC) that integrates an analog front end (AFE) for four
fully differential or eight single-ended inputs.
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@xxxxxxxxxx>
---
drivers/iio/adc/ad7173.c | 36 +++++++++++++++++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ad7173.c b/drivers/iio/adc/ad7173.c
index a854f2d30174..3ac09d326472 100644
--- a/drivers/iio/adc/ad7173.c
+++ b/drivers/iio/adc/ad7173.c
@@ -3,7 +3,7 @@
* AD717x and AD411x family SPI ADC driver
*
* Supported devices:
- * AD4111/AD4112/AD4114/AD4115/AD4116
+ * AD4111/AD4112/AD4113/AD4114/AD4115/AD4116
* AD7172-2/AD7172-4/AD7173-8/AD7175-2
* AD7175-8/AD7176-2/AD7177-2
*
@@ -84,6 +84,7 @@
#define AD4111_ID AD7173_ID
#define AD4112_ID AD7173_ID
#define AD4114_ID AD7173_ID
+#define AD4113_ID 0x31D0
#define AD4116_ID 0x34d0
#define AD4115_ID 0x38d0
#define AD7175_8_ID 0x3cd0
@@ -170,6 +171,7 @@ struct ad7173_device_info {
bool has_temp;
/* ((AVDD1 − AVSS)/5) */
bool has_pow_supply_monitoring;
+ bool data_reg_only_16bit;
bool has_input_buf;
bool has_int_ref;
bool has_ref2;
@@ -294,6 +296,24 @@ static const struct ad7173_device_info ad4112_device_info = {
.num_sinc5_data_rates = ARRAY_SIZE(ad7173_sinc5_data_rates),
};
+static const struct ad7173_device_info ad4113_device_info = {
+ .name = "ad4113",
+ .id = AD4113_ID,
+ .num_voltage_in_div = 8,
+ .num_channels = 16,
+ .num_configs = 8,
+ .num_voltage_in = 8,
+ .num_gpios = 2,
+ .data_reg_only_16bit = true,
+ .higher_gpio_bits = true,
+ .has_vincom_input = true,
+ .has_input_buf = true,
+ .has_int_ref = true,
+ .clock = 2 * HZ_PER_MHZ,
+ .sinc5_data_rates = ad7173_sinc5_data_rates,
+ .num_sinc5_data_rates = ARRAY_SIZE(ad7173_sinc5_data_rates),
+};
+
static const struct ad7173_device_info ad4114_device_info = {
.name = "ad4114",
.id = AD4114_ID,
@@ -988,6 +1008,13 @@ static const struct iio_info ad7173_info = {
.update_scan_mode = ad7173_update_scan_mode,
};
+static const struct iio_scan_type ad4113_scan_type = {
+ .sign = 'u',
+ .realbits = 16,
+ .storagebits = 16,
+ .endianness = IIO_BE,
+};
+
static const struct iio_chan_spec ad7173_channel_template = {
.type = IIO_VOLTAGE,
.indexed = 1,
@@ -1229,6 +1256,8 @@ static int ad7173_fw_parse_channel_config(struct iio_dev *indio_dev)
chan_st_priv->cfg.input_buf = st->info->has_input_buf;
chan_st_priv->cfg.ref_sel = AD7173_SETUP_REF_SEL_INT_REF;
st->adc_mode |= AD7173_ADC_MODE_REF_EN;
+ if (st->info->data_reg_only_16bit)
+ chan_arr[chan_index].scan_type = ad4113_scan_type;
chan_index++;
}
@@ -1309,6 +1338,9 @@ static int ad7173_fw_parse_channel_config(struct iio_dev *indio_dev)
chan_st_priv->ain = AD7173_CH_ADDRESS(ain[0], ain[1]);
}
+ if (st->info->data_reg_only_16bit)
+ chan_arr[chan_index].scan_type = ad4113_scan_type;
+
chan_index++;
}
return 0;
@@ -1437,6 +1469,7 @@ static int ad7173_probe(struct spi_device *spi)
static const struct of_device_id ad7173_of_match[] = {
{ .compatible = "adi,ad4111", .data = &ad4111_device_info },
{ .compatible = "adi,ad4112", .data = &ad4112_device_info },
+ { .compatible = "adi,ad4113", .data = &ad4113_device_info },
{ .compatible = "adi,ad4114", .data = &ad4114_device_info },
{ .compatible = "adi,ad4115", .data = &ad4115_device_info },
{ .compatible = "adi,ad4116", .data = &ad4116_device_info },
@@ -1454,6 +1487,7 @@ MODULE_DEVICE_TABLE(of, ad7173_of_match);
static const struct spi_device_id ad7173_id_table[] = {
{ "ad4111", (kernel_ulong_t)&ad4111_device_info },
{ "ad4112", (kernel_ulong_t)&ad4112_device_info },
+ { "ad4113", (kernel_ulong_t)&ad4113_device_info },
{ "ad4114", (kernel_ulong_t)&ad4114_device_info },
{ "ad4115", (kernel_ulong_t)&ad4115_device_info },
{ "ad4116", (kernel_ulong_t)&ad4116_device_info },
--
2.43.0
