aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/drivers/iio/adc/ad7793.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iio/adc/ad7793.c')
-rw-r--r--drivers/iio/adc/ad7793.c144
1 files changed, 105 insertions, 39 deletions
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index e5691e330323..808485f42415 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -354,29 +354,28 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
static IIO_CONST_ATTR_NAMED(sampling_frequency_available_ad7797,
sampling_frequency_available, "123 62 50 33 17 16 12 10 8 6 4");
-static ssize_t ad7793_show_scale_available(struct device *dev,
- struct device_attribute *attr, char *buf)
+static int ad7793_read_avail(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length,
+ long mask)
{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ad7793_state *st = iio_priv(indio_dev);
- int i, len = 0;
- for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
- len += sprintf(buf + len, "%d.%09u ", st->scale_avail[i][0],
- st->scale_avail[i][1]);
-
- len += sprintf(buf + len, "\n");
+ switch (mask) {
+ case IIO_CHAN_INFO_SCALE:
+ *vals = (int *)st->scale_avail;
+ *type = IIO_VAL_INT_PLUS_NANO;
+ /* Values are stored in a 2D matrix */
+ *length = ARRAY_SIZE(st->scale_avail) * 2;
- return len;
+ return IIO_AVAIL_LIST;
+ default:
+ return -EINVAL;
+ }
}
-static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available,
- in_voltage-voltage_scale_available, S_IRUGO,
- ad7793_show_scale_available, NULL, 0);
-
static struct attribute *ad7793_attributes[] = {
&iio_const_attr_sampling_frequency_available.dev_attr.attr,
- &iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
NULL
};
@@ -534,6 +533,7 @@ static const struct iio_info ad7793_info = {
.read_raw = &ad7793_read_raw,
.write_raw = &ad7793_write_raw,
.write_raw_get_fmt = &ad7793_write_raw_get_fmt,
+ .read_avail = ad7793_read_avail,
.attrs = &ad7793_attribute_group,
.validate_trigger = ad_sd_validate_trigger,
};
@@ -546,47 +546,113 @@ static const struct iio_info ad7797_info = {
.validate_trigger = ad_sd_validate_trigger,
};
+#define __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift, _extend_name, _type, _mask_type_av, _mask_all) \
+ { \
+ .type = (_type), \
+ .differential = (_channel2 == -1 ? 0 : 1), \
+ .indexed = 1, \
+ .channel = (_channel1), \
+ .channel2 = (_channel2), \
+ .address = (_address), \
+ .extend_name = (_extend_name), \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_OFFSET), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .info_mask_shared_by_type_available = (_mask_type_av), \
+ .info_mask_shared_by_all = _mask_all, \
+ .scan_index = (_si), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (_bits), \
+ .storagebits = (_storagebits), \
+ .shift = (_shift), \
+ .endianness = IIO_BE, \
+ }, \
+ }
+
+#define AD7793_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift) \
+ __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SCALE), \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7793_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
+ _storagebits, _shift, "shorted", IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SCALE), \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7793_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \
+ __AD7793_CHANNEL(_si, 0, -1, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_TEMP, \
+ 0, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7793_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
+ _shift) \
+ __AD7793_CHANNEL(_si, _channel, -1, _address, _bits, \
+ _storagebits, _shift, "supply", IIO_VOLTAGE, \
+ 0, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7797_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift) \
+ __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ 0, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7797_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
+ _storagebits, _shift, "shorted", IIO_VOLTAGE, \
+ 0, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
#define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \
const struct iio_chan_spec _name##_channels[] = { \
- AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), (_s)), \
- AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), (_s)), \
- AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), (_s)), \
- AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), (_s)), \
- AD_SD_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), (_s)), \
- AD_SD_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), (_s)), \
+ AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), (_s)), \
+ AD7793_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), (_s)), \
+ AD7793_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), (_s)), \
+ AD7793_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), (_s)), \
+ AD7793_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), (_s)), \
+ AD7793_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), (_s)), \
IIO_CHAN_SOFT_TIMESTAMP(6), \
}
#define DECLARE_AD7795_CHANNELS(_name, _b, _sb) \
const struct iio_chan_spec _name##_channels[] = { \
- AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
- AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
- AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
- AD_SD_DIFF_CHANNEL(3, 3, 3, AD7795_CH_AIN4P_AIN4M, (_b), (_sb), 0), \
- AD_SD_DIFF_CHANNEL(4, 4, 4, AD7795_CH_AIN5P_AIN5M, (_b), (_sb), 0), \
- AD_SD_DIFF_CHANNEL(5, 5, 5, AD7795_CH_AIN6P_AIN6M, (_b), (_sb), 0), \
- AD_SD_SHORTED_CHANNEL(6, 0, AD7795_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
- AD_SD_TEMP_CHANNEL(7, AD7793_CH_TEMP, (_b), (_sb), 0), \
- AD_SD_SUPPLY_CHANNEL(8, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(3, 3, 3, AD7795_CH_AIN4P_AIN4M, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(4, 4, 4, AD7795_CH_AIN5P_AIN5M, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(5, 5, 5, AD7795_CH_AIN6P_AIN6M, (_b), (_sb), 0), \
+ AD7793_SHORTED_CHANNEL(6, 0, AD7795_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
+ AD7793_TEMP_CHANNEL(7, AD7793_CH_TEMP, (_b), (_sb), 0), \
+ AD7793_SUPPLY_CHANNEL(8, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
IIO_CHAN_SOFT_TIMESTAMP(9), \
}
#define DECLARE_AD7797_CHANNELS(_name, _b, _sb) \
const struct iio_chan_spec _name##_channels[] = { \
- AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
- AD_SD_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
- AD_SD_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \
- AD_SD_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
+ AD7797_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
+ AD7797_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
+ AD7793_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \
+ AD7793_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
IIO_CHAN_SOFT_TIMESTAMP(4), \
}
#define DECLARE_AD7799_CHANNELS(_name, _b, _sb) \
const struct iio_chan_spec _name##_channels[] = { \
- AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
- AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
- AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
- AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
- AD_SD_SUPPLY_CHANNEL(4, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
+ AD7793_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
+ AD7793_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
+ AD7793_SUPPLY_CHANNEL(4, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
IIO_CHAN_SOFT_TIMESTAMP(5), \
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.