Lines Matching +full:3 +full:- +full:channel
1 // SPDX-License-Identifier: GPL-2.0+
54 #define AD7124_SILICON_REV_MSK GENMASK(3, 0)
73 #define AD7124_CONFIG_REF_SEL_MSK GENMASK(4, 3)
112 1, 2, 3, 3, 2, 1, 3, 3, 1, 2, 2, 2, 2,
114 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
115 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
116 3, 3, 3, 3, 3
119 static const int ad7124_master_clk_freq_hz[3] = {
180 .name = "ad7124-4",
185 .name = "ad7124-8",
201 diff_new = abs(val - array[i]); in ad7124_find_closest_match()
220 ret = ad_sd_read_reg(&st->sd, addr, bytes, &readval); in ad7124_spi_write_mask()
227 return ad_sd_write_reg(&st->sd, addr, bytes, readval); in ad7124_spi_write_mask()
235 st->adc_control &= ~AD7124_ADC_CTRL_MODE_MSK; in ad7124_set_mode()
236 st->adc_control |= AD7124_ADC_CTRL_MODE(mode); in ad7124_set_mode()
238 return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, st->adc_control); in ad7124_set_mode()
241 static int ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel) in ad7124_set_channel() argument
246 val = st->channel_config[channel].ain | AD7124_CHANNEL_EN(1) | in ad7124_set_channel()
247 AD7124_CHANNEL_SETUP(channel); in ad7124_set_channel()
249 return ad_sd_write_reg(&st->sd, AD7124_CHANNEL(channel), 2, val); in ad7124_set_channel()
263 unsigned int channel, in ad7124_set_channel_odr() argument
269 fclk = clk_get_rate(st->mclk); in ad7124_set_channel_odr()
283 ret = ad7124_spi_write_mask(st, AD7124_FILTER(channel), in ad7124_set_channel_odr()
285 AD7124_FILTER_FS(odr_sel_bits), 3); in ad7124_set_channel_odr()
289 st->channel_config[channel].odr = in ad7124_set_channel_odr()
296 unsigned int channel, in ad7124_set_channel_gain() argument
304 ret = ad7124_spi_write_mask(st, AD7124_CONFIG(channel), in ad7124_set_channel_gain()
310 st->channel_config[channel].pga_bits = res; in ad7124_set_channel_gain()
316 unsigned int channel) in ad7124_get_3db_filter_freq() argument
320 fadc = st->channel_config[channel].odr; in ad7124_get_3db_filter_freq()
322 switch (st->channel_config[channel].filter_type) { in ad7124_get_3db_filter_freq()
328 return -EINVAL; in ad7124_get_3db_filter_freq()
333 unsigned int channel, in ad7124_set_3db_filter_freq() argument
352 if (st->channel_config[channel].filter_type != new_filter) { in ad7124_set_3db_filter_freq()
355 st->channel_config[channel].filter_type = new_filter; in ad7124_set_3db_filter_freq()
356 ret = ad7124_spi_write_mask(st, AD7124_FILTER(channel), in ad7124_set_3db_filter_freq()
359 3); in ad7124_set_3db_filter_freq()
364 return ad7124_set_channel_odr(st, channel, new_odr); in ad7124_set_3db_filter_freq()
380 /* After the conversion is performed, disable the channel */ in ad7124_read_raw()
381 ret = ad_sd_write_reg(&st->sd, in ad7124_read_raw()
382 AD7124_CHANNEL(chan->address), 2, in ad7124_read_raw()
383 st->channel_config[chan->address].ain | in ad7124_read_raw()
390 idx = st->channel_config[chan->address].pga_bits; in ad7124_read_raw()
391 *val = st->channel_config[chan->address].vref_mv; in ad7124_read_raw()
392 if (st->channel_config[chan->address].bipolar) in ad7124_read_raw()
393 *val2 = chan->scan_type.realbits - 1 + idx; in ad7124_read_raw()
395 *val2 = chan->scan_type.realbits + idx; in ad7124_read_raw()
399 if (st->channel_config[chan->address].bipolar) in ad7124_read_raw()
400 *val = -(1 << (chan->scan_type.realbits - 1)); in ad7124_read_raw()
406 *val = st->channel_config[chan->address].odr; in ad7124_read_raw()
410 *val = ad7124_get_3db_filter_freq(st, chan->scan_index); in ad7124_read_raw()
413 return -EINVAL; in ad7124_read_raw()
427 return -EINVAL; in ad7124_write_raw()
429 return ad7124_set_channel_odr(st, chan->address, val); in ad7124_write_raw()
432 return -EINVAL; in ad7124_write_raw()
434 if (st->channel_config[chan->address].bipolar) in ad7124_write_raw()
435 full_scale = 1 << (chan->scan_type.realbits - 1); in ad7124_write_raw()
437 full_scale = 1 << chan->scan_type.realbits; in ad7124_write_raw()
439 vref = st->channel_config[chan->address].vref_mv * 1000000LL; in ad7124_write_raw()
443 return ad7124_set_channel_gain(st, chan->address, gain); in ad7124_write_raw()
446 return -EINVAL; in ad7124_write_raw()
448 return ad7124_set_3db_filter_freq(st, chan->address, val); in ad7124_write_raw()
450 return -EINVAL; in ad7124_write_raw()
463 return -EINVAL; in ad7124_reg_access()
466 ret = ad_sd_read_reg(&st->sd, reg, ad7124_reg_size[reg], in ad7124_reg_access()
469 ret = ad_sd_write_reg(&st->sd, reg, ad7124_reg_size[reg], in ad7124_reg_access()
500 ret = ad_sd_reset(&st->sd, 64); in ad7124_soft_reset()
506 ret = ad_sd_read_reg(&st->sd, AD7124_STATUS, 1, &readval); in ad7124_soft_reset()
515 } while (--timeout); in ad7124_soft_reset()
517 dev_err(&st->sd.spi->dev, "Soft reset failed\n"); in ad7124_soft_reset()
519 return -EIO; in ad7124_soft_reset()
527 ret = ad_sd_read_reg(&st->sd, AD7124_ID, 1, &readval); in ad7124_check_chip_id()
534 if (chip_id != st->chip_info->chip_id) { in ad7124_check_chip_id()
535 dev_err(&st->sd.spi->dev, in ad7124_check_chip_id()
537 st->chip_info->chip_id, chip_id); in ad7124_check_chip_id()
538 return -ENODEV; in ad7124_check_chip_id()
542 dev_err(&st->sd.spi->dev, in ad7124_check_chip_id()
544 return -ENODEV; in ad7124_check_chip_id()
553 unsigned int refsel = st->channel_config[channel_number].refsel; in ad7124_init_channel_vref()
559 if (IS_ERR(st->vref[refsel])) { in ad7124_init_channel_vref()
560 dev_err(&st->sd.spi->dev, in ad7124_init_channel_vref()
563 return PTR_ERR(st->vref[refsel]); in ad7124_init_channel_vref()
565 st->channel_config[channel_number].vref_mv = in ad7124_init_channel_vref()
566 regulator_get_voltage(st->vref[refsel]); in ad7124_init_channel_vref()
568 st->channel_config[channel_number].vref_mv /= 1000; in ad7124_init_channel_vref()
571 st->channel_config[channel_number].vref_mv = 2500; in ad7124_init_channel_vref()
572 st->adc_control &= ~AD7124_ADC_CTRL_REF_EN_MSK; in ad7124_init_channel_vref()
573 st->adc_control |= AD7124_ADC_CTRL_REF_EN(1); in ad7124_init_channel_vref()
574 return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, in ad7124_init_channel_vref()
575 2, st->adc_control); in ad7124_init_channel_vref()
577 dev_err(&st->sd.spi->dev, "Invalid reference %d\n", refsel); in ad7124_init_channel_vref()
578 return -EINVAL; in ad7124_init_channel_vref()
591 unsigned int ain[2], channel = 0, tmp; in ad7124_of_parse_channel_config() local
594 st->num_channels = of_get_available_child_count(np); in ad7124_of_parse_channel_config()
595 if (!st->num_channels) { in ad7124_of_parse_channel_config()
596 dev_err(indio_dev->dev.parent, "no channel children\n"); in ad7124_of_parse_channel_config()
597 return -ENODEV; in ad7124_of_parse_channel_config()
600 chan = devm_kcalloc(indio_dev->dev.parent, st->num_channels, in ad7124_of_parse_channel_config()
603 return -ENOMEM; in ad7124_of_parse_channel_config()
605 chan_config = devm_kcalloc(indio_dev->dev.parent, st->num_channels, in ad7124_of_parse_channel_config()
608 return -ENOMEM; in ad7124_of_parse_channel_config()
610 indio_dev->channels = chan; in ad7124_of_parse_channel_config()
611 indio_dev->num_channels = st->num_channels; in ad7124_of_parse_channel_config()
612 st->channel_config = chan_config; in ad7124_of_parse_channel_config()
615 ret = of_property_read_u32(child, "reg", &channel); in ad7124_of_parse_channel_config()
619 if (channel >= indio_dev->num_channels) { in ad7124_of_parse_channel_config()
620 dev_err(indio_dev->dev.parent, in ad7124_of_parse_channel_config()
621 "Channel index >= number of channels\n"); in ad7124_of_parse_channel_config()
622 ret = -EINVAL; in ad7124_of_parse_channel_config()
626 ret = of_property_read_u32_array(child, "diff-channels", in ad7124_of_parse_channel_config()
631 st->channel_config[channel].ain = AD7124_CHANNEL_AINP(ain[0]) | in ad7124_of_parse_channel_config()
633 st->channel_config[channel].bipolar = in ad7124_of_parse_channel_config()
636 ret = of_property_read_u32(child, "adi,reference-select", &tmp); in ad7124_of_parse_channel_config()
638 st->channel_config[channel].refsel = AD7124_INT_REF; in ad7124_of_parse_channel_config()
640 st->channel_config[channel].refsel = tmp; in ad7124_of_parse_channel_config()
642 st->channel_config[channel].buf_positive = in ad7124_of_parse_channel_config()
643 of_property_read_bool(child, "adi,buffered-positive"); in ad7124_of_parse_channel_config()
644 st->channel_config[channel].buf_negative = in ad7124_of_parse_channel_config()
645 of_property_read_bool(child, "adi,buffered-negative"); in ad7124_of_parse_channel_config()
647 chan[channel] = ad7124_channel_template; in ad7124_of_parse_channel_config()
648 chan[channel].address = channel; in ad7124_of_parse_channel_config()
649 chan[channel].scan_index = channel; in ad7124_of_parse_channel_config()
650 chan[channel].channel = ain[0]; in ad7124_of_parse_channel_config()
651 chan[channel].channel2 = ain[1]; in ad7124_of_parse_channel_config()
666 fclk = clk_get_rate(st->mclk); in ad7124_setup()
668 return -EINVAL; in ad7124_setup()
675 ret = clk_set_rate(st->mclk, fclk); in ad7124_setup()
681 st->adc_control &= ~AD7124_ADC_CTRL_PWR_MSK; in ad7124_setup()
682 st->adc_control |= AD7124_ADC_CTRL_PWR(power_mode); in ad7124_setup()
683 ret = ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, st->adc_control); in ad7124_setup()
687 for (i = 0; i < st->num_channels; i++) { in ad7124_setup()
688 val = st->channel_config[i].ain | AD7124_CHANNEL_SETUP(i); in ad7124_setup()
689 ret = ad_sd_write_reg(&st->sd, AD7124_CHANNEL(i), 2, val); in ad7124_setup()
697 tmp = (st->channel_config[i].buf_positive << 1) + in ad7124_setup()
698 st->channel_config[i].buf_negative; in ad7124_setup()
700 val = AD7124_CONFIG_BIPOLAR(st->channel_config[i].bipolar) | in ad7124_setup()
701 AD7124_CONFIG_REF_SEL(st->channel_config[i].refsel) | in ad7124_setup()
703 ret = ad_sd_write_reg(&st->sd, AD7124_CONFIG(i), 2, val); in ad7124_setup()
729 info = of_device_get_match_data(&spi->dev); in ad7124_probe()
731 return -ENODEV; in ad7124_probe()
733 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); in ad7124_probe()
735 return -ENOMEM; in ad7124_probe()
739 st->chip_info = info; in ad7124_probe()
741 ad_sd_init(&st->sd, indio_dev, spi, &ad7124_sigma_delta_info); in ad7124_probe()
745 indio_dev->name = st->chip_info->name; in ad7124_probe()
746 indio_dev->modes = INDIO_DIRECT_MODE; in ad7124_probe()
747 indio_dev->info = &ad7124_info; in ad7124_probe()
749 ret = ad7124_of_parse_channel_config(indio_dev, spi->dev.of_node); in ad7124_probe()
753 for (i = 0; i < ARRAY_SIZE(st->vref); i++) { in ad7124_probe()
757 st->vref[i] = devm_regulator_get_optional(&spi->dev, in ad7124_probe()
759 if (PTR_ERR(st->vref[i]) == -ENODEV) in ad7124_probe()
761 else if (IS_ERR(st->vref[i])) in ad7124_probe()
762 return PTR_ERR(st->vref[i]); in ad7124_probe()
764 ret = regulator_enable(st->vref[i]); in ad7124_probe()
768 ret = devm_add_action_or_reset(&spi->dev, ad7124_reg_disable, in ad7124_probe()
769 st->vref[i]); in ad7124_probe()
774 st->mclk = devm_clk_get(&spi->dev, "mclk"); in ad7124_probe()
775 if (IS_ERR(st->mclk)) in ad7124_probe()
776 return PTR_ERR(st->mclk); in ad7124_probe()
778 ret = clk_prepare_enable(st->mclk); in ad7124_probe()
800 dev_err(&spi->dev, "Failed to register iio device\n"); in ad7124_probe()
809 clk_disable_unprepare(st->mclk); in ad7124_probe()
821 clk_disable_unprepare(st->mclk); in ad7124_remove()
827 { .compatible = "adi,ad7124-4",
829 { .compatible = "adi,ad7124-8",