| /linux/Documentation/iio/ |
| H A D | iio_adc.rst | 33 pseudo-differential) and two possible polarities (unipolar, bipolar). The input
36 bipolar) aspect. A comprehensive article about ADC input types (on which this
44 can be either unipolar or bipolar.
111 For a **single-ended bipolar** channel, the analog voltage input can go from
117 true bipolar. Also, while there is a relevant difference between bipolar and
118 true bipolar from the electrical perspective, IIO makes no explicit distinction
121 Here's an example device tree description of a single-ended bipolar channel::
130 bipolar;
162 The analog signals to **differential bipolar** inputs are also allowed to swing
163 from -VREF to +VREF. The bipolar part of the name means that the resulting value
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| H A D | ad4695.rst | 123 bipolar;
150 bipolar;
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| /linux/Documentation/devicetree/bindings/iio/adc/ |
| H A D | xilinx-xadc.txt | 82 * xlnx,bipolar: If set the channel is used in bipolar
121 xlnx,bipolar;
138 xlnx,bipolar;
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| /linux/drivers/iio/adc/ |
| H A D | ad7606.c | 313 bool *bipolar, bool *differential) in ad7606_get_chan_config() argument
321 *bipolar = false; in ad7606_get_chan_config()
340 *bipolar = fwnode_property_read_bool(child, "bipolar"); in ad7606_get_chan_config()
353 if (*differential && !*bipolar) { in ad7606_get_chan_config()
379 bool bipolar, differential; in ad7606c_18bit_chan_scale_setup() local
389 ret = ad7606_get_chan_config(indio_dev, chan->scan_index, &bipolar, in ad7606c_18bit_chan_scale_setup()
409 if (bipolar) { in ad7606c_18bit_chan_scale_setup()
437 bool bipolar, differential; in ad7606c_16bit_chan_scale_setup() local
447 ret = ad7606_get_chan_config(indio_dev, chan->scan_index, &bipolar, in ad7606c_16bit_chan_scale_setup()
468 if (bipolar) { in ad7606c_16bit_chan_scale_setup()
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| H A D | ad7124.c | 191 bool bipolar;
436 a->bipolar == b->bipolar && in ad7124_config_equal()
465 val = FIELD_PREP(AD7124_CONFIG_BIPOLAR, cfg->bipolar) | in ad7124_write_config()
744 if (st->channels[chan->address].cfg.bipolar) in ad7124_read_raw()
774 if (st->channels[chan->address].cfg.bipolar) in ad7124_read_raw()
873 if (st->channels[chan->address].cfg.bipolar) in ad7124_write_raw()
1271 cfg->bipolar = fwnode_property_read_bool(child, "bipolar"); in ad7124_parse_channel_config()
1296 .bipolar = true, in ad7124_parse_channel_config()
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| H A D | ad7173.c | 221 bool bipolar;
669 bool bipolar; in ad7173_is_setup_equal()
677 return cfg1->bipolar == cfg2->bipolar && in ad7173_is_setup_equal()
733 if (cfg->bipolar) in ad7173_load_config()
1284 *val2 = chan->scan_type.realbits - !!(ch->cfg.bipolar); in ad7173_read_raw()
1292 *val2 = chan->scan_type.realbits - ch->cfg.bipolar; in ad7173_read_raw()
1770 BIT(chan->scan_type.realbits - !!(chan_st_priv->cfg.bipolar)) in ad7173_calc_openwire_thrsh_raw()
1823 chan_st_priv->cfg.bipolar = false; in ad7173_fw_parse_channel_config()
1909 chan_st_priv->cfg.bipolar = fwnode_property_read_bool(child, "bipolar"); in ad7173_fw_parse_channel_config()
1910 if (chan_st_priv->cfg.bipolar) in ad7173_fw_parse_channel_config()
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| H A D | max11410.c | 128 bool bipolar; member
371 FIELD_PREP(MAX11410_CTRL_UNIPOLAR_BIT, cfg.bipolar ? 0 : 1); in max11410_configure_channel()
447 if (cfg.bipolar) in max11410_get_scale()
467 if (cfg.bipolar) in max11410_read_raw()
771 cfg->bipolar = fwnode_property_read_bool(child, "bipolar"); in max11410_parse_channels()
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| H A D | ad4695.c | 126 bool bipolar; member
613 val = FIELD_PREP(AD4695_REG_CONFIG_IN_MODE, cfg->bipolar ? 1 : 0); in ad4695_write_chn_cfg()
1557 chan_cfg->bipolar = fwnode_property_read_bool(child, "bipolar"); in ad4695_parse_channel_cfg()
1599 if (chan_cfg->bipolar && in ad4695_parse_channel_cfg()
1605 if (chan_cfg->bipolar) in ad4695_parse_channel_cfg()
1777 if (cfg->bipolar) { in ad4695_probe_spi_offload()
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| H A D | ad4170-4.c | 1104 bool bipolar = chan->scan_type.sign == 's'; in ad4170_get_input_range() local
1148 if (!bipolar) in ad4170_get_input_range()
1178 if (bipolar) in ad4170_get_input_range()
1356 int bipolar = chan->scan_type.sign == 's' ? 1 : 0; in ad4170_fill_scale_tbl() local
1388 rshift = precision_bits - bipolar + (pga & GENMASK(2, 0)) - lshift; in ad4170_fill_scale_tbl()
2284 bool bipolar; in ad4170_parse_channel_node() local
2335 bipolar = fwnode_property_read_bool(child, "bipolar"); in ad4170_parse_channel_node()
2336 setup->afe |= FIELD_PREP(AD4170_AFE_BIPOLAR_MSK, bipolar); in ad4170_parse_channel_node()
2337 if (bipolar) in ad4170_parse_channel_node()
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| H A D | ad4130.c | 296 bool bipolar; member
1140 *val = st->bipolar ? -BIT(chan->scan_type.realbits - 1) : 0; in ad4130_read_raw()
1729 st->bipolar = device_property_read_bool(dev, "adi,bipolar"); in ad4310_parse_fw()
1761 unsigned int pow = ad4130_resolution(st) - st->bipolar; in ad4130_fill_scale_tbls()
1902 val |= FIELD_PREP(AD4130_ADC_CONTROL_BIPOLAR_MASK, st->bipolar); in ad4130_setup()
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| H A D | ad7192.c | 571 bool buf_en, bipolar, burnout_curr_en; in ad7192_setup() local
612 bipolar = device_property_read_bool(dev, "bipolar"); in ad7192_setup()
613 if (!bipolar) in ad7192_setup()
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| /linux/drivers/comedi/drivers/ |
| H A D | amplc_pci230.c | 1419 bool bipolar = comedi_range_is_bipolar(s, range); in pci230_ai_check_chanlist() local
1451 if (bipolar != prev_bipolar) { in pci230_ai_check_chanlist()
1469 prev_bipolar = bipolar; in pci230_ai_check_chanlist()
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