*val = (smpl >> chan->scan_type.shift) &
((1 << (chan->scan_type.realbits)) - 1);
- if (!unipolar)
- *val -= (1 << (chan->scan_type.realbits - 1));
-
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
return IIO_VAL_INT_PLUS_NANO;
} else {
/* 1170mV / 2^23 * 6 */
- scale_uv = (1170ULL * 100000000ULL * 6ULL)
- >> (chan->scan_type.realbits -
- (unipolar ? 0 : 1));
+ scale_uv = (1170ULL * 100000000ULL * 6ULL);
}
break;
case IIO_TEMP:
- /* Always uses unity gain and internal ref */
- scale_uv = (2500ULL * 100000000ULL)
- >> (chan->scan_type.realbits -
- (unipolar ? 0 : 1));
+ /* 1170mV / 0.81 mV/C / 2^23 */
+ scale_uv = 1444444444444ULL;
break;
default:
return -EINVAL;
}
- *val2 = do_div(scale_uv, 100000000) * 10;
- *val = scale_uv;
-
+ scale_uv >>= (chan->scan_type.realbits - (unipolar ? 0 : 1));
+ *val = 0;
+ *val2 = scale_uv;
return IIO_VAL_INT_PLUS_NANO;
+ case IIO_CHAN_INFO_OFFSET:
+ if (!unipolar)
+ *val = -(1 << (chan->scan_type.realbits - 1));
+ else
+ *val = 0;
+
+ /* Kelvin to Celsius */
+ if (chan->type == IIO_TEMP) {
+ unsigned long long offset;
+ unsigned int shift;
+
+ shift = chan->scan_type.realbits - (unipolar ? 0 : 1);
+ offset = 273ULL << shift;
+ do_div(offset, 1444);
+ *val -= offset;
+ }
+ return IIO_VAL_INT;
}
return -EINVAL;
}
}
ret = 0;
}
-
+ break;
default:
ret = -EINVAL;
}
.channel2 = 0,
.address = AD7793_CH_AIN1P_AIN1M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 0,
- .scan_type = IIO_ST('s', 24, 32, 0)
+ .scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[1] = {
.type = IIO_VOLTAGE,
.channel2 = 1,
.address = AD7793_CH_AIN2P_AIN2M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 1,
- .scan_type = IIO_ST('s', 24, 32, 0)
+ .scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[2] = {
.type = IIO_VOLTAGE,
.channel2 = 2,
.address = AD7793_CH_AIN3P_AIN3M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 2,
- .scan_type = IIO_ST('s', 24, 32, 0)
+ .scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[3] = {
.type = IIO_VOLTAGE,
.channel2 = 2,
.address = AD7793_CH_AIN1M_AIN1M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 3,
- .scan_type = IIO_ST('s', 24, 32, 0)
+ .scan_type = IIO_ST('u', 24, 32, 0)
},
.channel[4] = {
.type = IIO_TEMP,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 4,
- .scan_type = IIO_ST('s', 24, 32, 0),
+ .scan_type = IIO_ST('u', 24, 32, 0),
},
.channel[5] = {
.type = IIO_VOLTAGE,
.channel = 4,
.address = AD7793_CH_AVDD_MONITOR,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 5,
- .scan_type = IIO_ST('s', 24, 32, 0),
+ .scan_type = IIO_ST('u', 24, 32, 0),
},
.channel[6] = IIO_CHAN_SOFT_TIMESTAMP(6),
},
.channel2 = 0,
.address = AD7793_CH_AIN1P_AIN1M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 0,
- .scan_type = IIO_ST('s', 16, 32, 0)
+ .scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[1] = {
.type = IIO_VOLTAGE,
.channel2 = 1,
.address = AD7793_CH_AIN2P_AIN2M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 1,
- .scan_type = IIO_ST('s', 16, 32, 0)
+ .scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[2] = {
.type = IIO_VOLTAGE,
.channel2 = 2,
.address = AD7793_CH_AIN3P_AIN3M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 2,
- .scan_type = IIO_ST('s', 16, 32, 0)
+ .scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[3] = {
.type = IIO_VOLTAGE,
.channel2 = 2,
.address = AD7793_CH_AIN1M_AIN1M,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 3,
- .scan_type = IIO_ST('s', 16, 32, 0)
+ .scan_type = IIO_ST('u', 16, 32, 0)
},
.channel[4] = {
.type = IIO_TEMP,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 4,
- .scan_type = IIO_ST('s', 16, 32, 0),
+ .scan_type = IIO_ST('u', 16, 32, 0),
},
.channel[5] = {
.type = IIO_VOLTAGE,
.channel = 4,
.address = AD7793_CH_AVDD_MONITOR,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
+ IIO_CHAN_INFO_OFFSET_SHARED_BIT,
.scan_index = 5,
- .scan_type = IIO_ST('s', 16, 32, 0),
+ .scan_type = IIO_ST('u', 16, 32, 0),
},
.channel[6] = IIO_CHAN_SOFT_TIMESTAMP(6),
},