Lines Matching +full:hart +full:- +full:3
1 // SPDX-License-Identifier: GPL-2.0
28 #include <dt-bindings/iio/addac/adi,ad74413r.h>
66 * Synchronize consecutive operations when doing a one-shot
98 #define AD74413R_CH_FUNC_SETUP_MASK GENMASK(3, 0)
102 #define AD74413R_ADC_CONFIG_REJECTION_MASK GENMASK(4, 3)
124 #define AD74413R_GPO_CONFIG_DATA_MASK BIT(3)
162 return crc8(ad74413r_crc8_table, buf, 3, 0); in ad74413r_crc()
169 buf[3] = ad74413r_crc(buf); in ad74413r_format_reg_write()
176 ad74413r_format_reg_write(reg, val, st->reg_tx_buf); in ad74413r_reg_write()
178 return spi_write(st->spi, st->reg_tx_buf, AD74413R_FRAME_SIZE); in ad74413r_reg_write()
185 if (buf[3] != expected_crc) { in ad74413r_crc_check()
186 dev_err(st->dev, "Bad CRC %02x for %02x%02x%02x\n", in ad74413r_crc_check()
187 buf[3], buf[0], buf[1], buf[2]); in ad74413r_crc_check()
188 return -EINVAL; in ad74413r_crc_check()
199 .tx_buf = st->reg_tx_buf, in ad74413r_reg_read()
204 .rx_buf = st->reg_rx_buf, in ad74413r_reg_read()
211 st->reg_tx_buf); in ad74413r_reg_read()
213 ret = spi_sync_transfer(st->spi, reg_read_xfer, in ad74413r_reg_read()
218 ret = ad74413r_crc_check(st, st->reg_rx_buf); in ad74413r_reg_read()
222 *val = get_unaligned_be16(&st->reg_rx_buf[1]); in ad74413r_reg_read()
237 return regmap_update_bits(st->regmap, AD74413R_REG_GPO_CONFIG_X(offset), in ad74413r_set_gpo_config()
252 unsigned int val = AD74413R_DIN_DEBOUNCE_LEN - 1; in ad74413r_set_comp_debounce()
261 return regmap_update_bits(st->regmap, in ad74413r_set_comp_debounce()
273 return regmap_update_bits(st->regmap, AD74413R_REG_DIN_CONFIG_X(offset), in ad74413r_set_comp_drive_strength()
283 unsigned int real_offset = st->gpo_gpio_offsets[offset]; in ad74413r_gpio_set()
291 regmap_update_bits(st->regmap, AD74413R_REG_GPO_CONFIG_X(real_offset), in ad74413r_gpio_set()
306 for_each_set_bit(offset, mask, chip->ngpio) { in ad74413r_gpio_set_multiple()
307 unsigned int real_offset = st->gpo_gpio_offsets[offset]; in ad74413r_gpio_set_multiple()
319 regmap_update_bits(st->regmap, AD74413R_REG_GPO_PAR_DATA, in ad74413r_gpio_set_multiple()
326 unsigned int real_offset = st->comp_gpio_offsets[offset]; in ad74413r_gpio_get()
330 ret = regmap_read(st->regmap, AD74413R_REG_DIN_COMP_OUT, &status); in ad74413r_gpio_get()
348 ret = regmap_read(st->regmap, AD74413R_REG_DIN_COMP_OUT, &val); in ad74413r_gpio_get_multiple()
352 for_each_set_bit(offset, mask, chip->ngpio) { in ad74413r_gpio_get_multiple()
353 unsigned int real_offset = st->comp_gpio_offsets[offset]; in ad74413r_gpio_get_multiple()
378 unsigned int real_offset = st->gpo_gpio_offsets[offset]; in ad74413r_gpio_set_gpo_config()
388 return -ENOTSUPP; in ad74413r_gpio_set_gpo_config()
397 unsigned int real_offset = st->comp_gpio_offsets[offset]; in ad74413r_gpio_set_comp_config()
404 return -ENOTSUPP; in ad74413r_gpio_set_comp_config()
413 reset_gpio = devm_gpiod_get_optional(st->dev, "reset", GPIOD_OUT_HIGH); in ad74413r_reset()
423 ret = regmap_write(st->regmap, AD74413R_REG_CMD_KEY, in ad74413r_reset()
428 return regmap_write(st->regmap, AD74413R_REG_CMD_KEY, in ad74413r_reset()
440 return regmap_multi_reg_write(st->regmap, reg_seq, 2); in ad74413r_set_channel_dac_code()
448 ret = regmap_update_bits(st->regmap, in ad74413r_set_channel_function()
463 ret = regmap_update_bits(st->regmap, in ad74413r_set_channel_function()
473 ret = regmap_set_bits(st->regmap, in ad74413r_set_channel_function()
489 ret = regmap_write_bits(st->regmap, AD74413R_REG_ADC_CONV_CTRL, in ad74413r_set_adc_conv_seq()
507 return regmap_update_bits(st->regmap, AD74413R_REG_ADC_CONV_CTRL, in ad74413r_set_adc_channel_enable()
518 ret = regmap_read(st->regmap, AD74413R_REG_ADC_CONFIG_X(channel), val); in ad74413r_get_adc_range()
533 ret = regmap_read(st->regmap, AD74413R_REG_ADC_CONFIG_X(channel), val); in ad74413r_get_adc_rejection()
546 return regmap_update_bits(st->regmap, in ad74413r_set_adc_rejection()
570 dev_err(st->dev, "ADC rejection invalid\n"); in ad74413r_rejection_to_rate()
571 return -EINVAL; in ad74413r_rejection_to_rate()
592 dev_err(st->dev, "ADC rate invalid\n"); in ad74413r_rate_to_rejection()
593 return -EINVAL; in ad74413r_rate_to_rejection()
612 dev_err(st->dev, "ADC range invalid\n"); in ad74413r_range_to_voltage_range()
613 return -EINVAL; in ad74413r_range_to_voltage_range()
627 *val = -2500; in ad74413r_range_to_voltage_offset()
630 dev_err(st->dev, "ADC range invalid\n"); in ad74413r_range_to_voltage_offset()
631 return -EINVAL; in ad74413r_range_to_voltage_offset()
644 *val = -((int)AD74413R_ADC_RESULT_MAX); in ad74413r_range_to_voltage_offset_raw()
647 *val = -((int)AD74413R_ADC_RESULT_MAX / 2); in ad74413r_range_to_voltage_offset_raw()
650 dev_err(st->dev, "ADC range invalid\n"); in ad74413r_range_to_voltage_offset_raw()
651 return -EINVAL; in ad74413r_range_to_voltage_offset_raw()
667 *val = st->refin_reg_uv; in ad74413r_get_output_current_scale()
668 *val2 = st->sense_resistor_ohms * AD74413R_DAC_CODE_MAX * 1000; in ad74413r_get_output_current_scale()
725 *val2 = AD74413R_ADC_RESULT_MAX * st->sense_resistor_ohms; in ad74413r_get_input_current_scale()
788 struct iio_dev *indio_dev = pf->indio_dev; in ad74413r_trigger_handler()
790 u8 *rx_buf = st->adc_samples_buf.rx_buf; in ad74413r_trigger_handler()
794 ret = spi_sync(st->spi, &st->adc_samples_msg); in ad74413r_trigger_handler()
798 for (i = 0; i < st->adc_active_channels; i++) in ad74413r_trigger_handler()
801 iio_push_to_buffers_with_timestamp(indio_dev, &st->adc_samples_buf, in ad74413r_trigger_handler()
805 iio_trigger_notify_done(indio_dev->trig); in ad74413r_trigger_handler()
816 iio_trigger_poll(st->trig); in ad74413r_adc_data_interrupt()
818 complete(&st->adc_data_completion); in ad74413r_adc_data_interrupt()
829 guard(mutex)(&st->lock); in _ad74413r_get_single_adc_result()
831 reinit_completion(&st->adc_data_completion); in _ad74413r_get_single_adc_result()
841 ret = wait_for_completion_timeout(&st->adc_data_completion, in _ad74413r_get_single_adc_result()
844 ret = -ETIMEDOUT; in _ad74413r_get_single_adc_result()
848 ret = regmap_read(st->regmap, AD74413R_REG_ADC_RESULT_X(channel), in _ad74413r_get_single_adc_result()
873 return -EBUSY; in ad74413r_get_single_adc_result()
883 adc_result = AD74413R_ADC_RESULT_MAX - 1; in ad74413r_adc_to_resistance_result()
886 AD74413R_ADC_RESULT_MAX - adc_result); in ad74413r_adc_to_resistance_result()
893 struct spi_transfer *xfer = st->adc_samples_xfer; in ad74413r_update_scan_mode()
894 u8 *rx_buf = st->adc_samples_buf.rx_buf; in ad74413r_update_scan_mode()
895 u8 *tx_buf = st->adc_samples_tx_buf; in ad74413r_update_scan_mode()
897 int ret = -EINVAL; in ad74413r_update_scan_mode()
899 guard(mutex)(&st->lock); in ad74413r_update_scan_mode()
901 spi_message_init(&st->adc_samples_msg); in ad74413r_update_scan_mode()
902 st->adc_active_channels = 0; in ad74413r_update_scan_mode()
931 st->adc_active_channels++; in ad74413r_update_scan_mode()
933 if (xfer == st->adc_samples_xfer) in ad74413r_update_scan_mode()
934 xfer->rx_buf = NULL; in ad74413r_update_scan_mode()
936 xfer->rx_buf = rx_buf; in ad74413r_update_scan_mode()
938 xfer->tx_buf = tx_buf; in ad74413r_update_scan_mode()
939 xfer->len = AD74413R_FRAME_SIZE; in ad74413r_update_scan_mode()
940 xfer->cs_change = 1; in ad74413r_update_scan_mode()
946 spi_message_add_tail(xfer, &st->adc_samples_msg); in ad74413r_update_scan_mode()
949 if (xfer != st->adc_samples_xfer) in ad74413r_update_scan_mode()
954 xfer->rx_buf = rx_buf; in ad74413r_update_scan_mode()
955 xfer->tx_buf = NULL; in ad74413r_update_scan_mode()
956 xfer->len = AD74413R_FRAME_SIZE; in ad74413r_update_scan_mode()
957 xfer->cs_change = 0; in ad74413r_update_scan_mode()
959 spi_message_add_tail(xfer, &st->adc_samples_msg); in ad74413r_update_scan_mode()
985 switch (chan->type) { in ad74413r_read_raw()
987 if (chan->output) in ad74413r_read_raw()
992 chan->channel, val, val2); in ad74413r_read_raw()
994 if (chan->output) in ad74413r_read_raw()
999 chan->channel, val, val2); in ad74413r_read_raw()
1001 return -EINVAL; in ad74413r_read_raw()
1004 switch (chan->type) { in ad74413r_read_raw()
1007 chan->channel, val); in ad74413r_read_raw()
1010 chan->channel, val); in ad74413r_read_raw()
1012 return -EINVAL; in ad74413r_read_raw()
1015 if (chan->output) in ad74413r_read_raw()
1016 return -EINVAL; in ad74413r_read_raw()
1018 return ad74413r_get_single_adc_result(indio_dev, chan->channel, in ad74413r_read_raw()
1023 ret = ad74413r_get_single_adc_result(indio_dev, chan->channel, in ad74413r_read_raw()
1033 return ad74413r_get_adc_rate(st, chan->channel, val); in ad74413r_read_raw()
1035 return -EINVAL; in ad74413r_read_raw()
1047 if (!chan->output) in ad74413r_write_raw()
1048 return -EINVAL; in ad74413r_write_raw()
1051 dev_err(st->dev, "Invalid DAC code\n"); in ad74413r_write_raw()
1052 return -EINVAL; in ad74413r_write_raw()
1055 return ad74413r_set_channel_dac_code(st, chan->channel, val); in ad74413r_write_raw()
1057 return ad74413r_set_adc_rate(st, chan->channel, val); in ad74413r_write_raw()
1059 return -EINVAL; in ad74413r_write_raw()
1072 if (st->chip_info->hart_support) { in ad74413r_read_avail()
1082 return -EINVAL; in ad74413r_read_avail()
1202 dev_err(st->dev, "Failed to read channel reg: %d\n", ret); in ad74413r_parse_channel_config()
1207 dev_err(st->dev, "Channel index %u is too large\n", index); in ad74413r_parse_channel_config()
1208 return -EINVAL; in ad74413r_parse_channel_config()
1211 config = &st->channel_configs[index]; in ad74413r_parse_channel_config()
1212 if (config->initialized) { in ad74413r_parse_channel_config()
1213 dev_err(st->dev, "Channel %u already initialized\n", index); in ad74413r_parse_channel_config()
1214 return -EINVAL; in ad74413r_parse_channel_config()
1217 config->func = CH_FUNC_HIGH_IMPEDANCE; in ad74413r_parse_channel_config()
1218 fwnode_property_read_u32(channel_node, "adi,ch-func", &config->func); in ad74413r_parse_channel_config()
1220 if (config->func < CH_FUNC_MIN || config->func > CH_FUNC_MAX) { in ad74413r_parse_channel_config()
1221 dev_err(st->dev, "Invalid channel function %u\n", config->func); in ad74413r_parse_channel_config()
1222 return -EINVAL; in ad74413r_parse_channel_config()
1225 if (!st->chip_info->hart_support && in ad74413r_parse_channel_config()
1226 (config->func == CH_FUNC_CURRENT_INPUT_EXT_POWER_HART || in ad74413r_parse_channel_config()
1227 config->func == CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART)) { in ad74413r_parse_channel_config()
1228 dev_err(st->dev, "Unsupported HART function %u\n", config->func); in ad74413r_parse_channel_config()
1229 return -EINVAL; in ad74413r_parse_channel_config()
1232 if (config->func == CH_FUNC_DIGITAL_INPUT_LOGIC || in ad74413r_parse_channel_config()
1233 config->func == CH_FUNC_DIGITAL_INPUT_LOOP_POWER) in ad74413r_parse_channel_config()
1234 st->num_comparator_gpios++; in ad74413r_parse_channel_config()
1236 config->gpo_comparator = fwnode_property_read_bool(channel_node, in ad74413r_parse_channel_config()
1237 "adi,gpo-comparator"); in ad74413r_parse_channel_config()
1239 fwnode_property_read_u32(channel_node, "drive-strength-microamp", in ad74413r_parse_channel_config()
1240 &config->drive_strength); in ad74413r_parse_channel_config()
1242 if (!config->gpo_comparator) in ad74413r_parse_channel_config()
1243 st->num_gpo_gpios++; in ad74413r_parse_channel_config()
1245 indio_dev->num_channels += ad74413r_channels_map[config->func].num_channels; in ad74413r_parse_channel_config()
1247 config->initialized = true; in ad74413r_parse_channel_config()
1257 device_for_each_child_node_scoped(st->dev, channel_node) { in ad74413r_parse_channel_configs()
1275 channels = devm_kcalloc(st->dev, sizeof(*channels), in ad74413r_setup_channels()
1276 indio_dev->num_channels, GFP_KERNEL); in ad74413r_setup_channels()
1278 return -ENOMEM; in ad74413r_setup_channels()
1280 indio_dev->channels = channels; in ad74413r_setup_channels()
1283 config = &st->channel_configs[i]; in ad74413r_setup_channels()
1284 chans = ad74413r_channels_map[config->func].channels; in ad74413r_setup_channels()
1285 num_chans = ad74413r_channels_map[config->func].num_channels; in ad74413r_setup_channels()
1292 chan->channel = i; in ad74413r_setup_channels()
1293 if (chan->output) in ad74413r_setup_channels()
1294 chan->scan_index = -1; in ad74413r_setup_channels()
1296 chan->scan_index = i; in ad74413r_setup_channels()
1299 ret = ad74413r_set_channel_function(st, i, config->func); in ad74413r_setup_channels()
1320 config = &st->channel_configs[i]; in ad74413r_setup_gpios()
1322 if (config->gpo_comparator) { in ad74413r_setup_gpios()
1326 st->gpo_gpio_offsets[gpo_gpio_i++] = i; in ad74413r_setup_gpios()
1329 if (config->func == CH_FUNC_DIGITAL_INPUT_LOGIC || in ad74413r_setup_gpios()
1330 config->func == CH_FUNC_DIGITAL_INPUT_LOOP_POWER) { in ad74413r_setup_gpios()
1331 st->comp_gpio_offsets[comp_gpio_i++] = i; in ad74413r_setup_gpios()
1333 strength = config->drive_strength; in ad74413r_setup_gpios()
1353 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); in ad74413r_probe()
1355 return -ENOMEM; in ad74413r_probe()
1359 st->spi = spi; in ad74413r_probe()
1360 st->dev = &spi->dev; in ad74413r_probe()
1361 st->chip_info = spi_get_device_match_data(spi); in ad74413r_probe()
1362 if (!st->chip_info) in ad74413r_probe()
1363 return -EINVAL; in ad74413r_probe()
1365 ret = devm_mutex_init(st->dev, &st->lock); in ad74413r_probe()
1369 init_completion(&st->adc_data_completion); in ad74413r_probe()
1371 st->regmap = devm_regmap_init(st->dev, NULL, st, in ad74413r_probe()
1373 if (IS_ERR(st->regmap)) in ad74413r_probe()
1374 return PTR_ERR(st->regmap); in ad74413r_probe()
1376 ret = devm_regulator_get_enable_read_voltage(st->dev, "refin"); in ad74413r_probe()
1378 return dev_err_probe(st->dev, ret, in ad74413r_probe()
1380 st->refin_reg_uv = ret; in ad74413r_probe()
1382 st->sense_resistor_ohms = 100000000; in ad74413r_probe()
1383 device_property_read_u32(st->dev, "shunt-resistor-micro-ohms", in ad74413r_probe()
1384 &st->sense_resistor_ohms); in ad74413r_probe()
1385 st->sense_resistor_ohms /= 1000000; in ad74413r_probe()
1387 st->trig = devm_iio_trigger_alloc(st->dev, "%s-dev%d", in ad74413r_probe()
1388 st->chip_info->name, iio_device_id(indio_dev)); in ad74413r_probe()
1389 if (!st->trig) in ad74413r_probe()
1390 return -ENOMEM; in ad74413r_probe()
1392 st->trig->ops = &ad74413r_trigger_ops; in ad74413r_probe()
1393 iio_trigger_set_drvdata(st->trig, st); in ad74413r_probe()
1395 ret = devm_iio_trigger_register(st->dev, st->trig); in ad74413r_probe()
1399 indio_dev->name = st->chip_info->name; in ad74413r_probe()
1400 indio_dev->modes = INDIO_DIRECT_MODE; in ad74413r_probe()
1401 indio_dev->info = &ad74413r_info; in ad74413r_probe()
1402 indio_dev->trig = iio_trigger_get(st->trig); in ad74413r_probe()
1420 if (st->num_gpo_gpios) { in ad74413r_probe()
1421 st->gpo_gpiochip.owner = THIS_MODULE; in ad74413r_probe()
1422 st->gpo_gpiochip.label = st->chip_info->name; in ad74413r_probe()
1423 st->gpo_gpiochip.base = -1; in ad74413r_probe()
1424 st->gpo_gpiochip.ngpio = st->num_gpo_gpios; in ad74413r_probe()
1425 st->gpo_gpiochip.parent = st->dev; in ad74413r_probe()
1426 st->gpo_gpiochip.can_sleep = true; in ad74413r_probe()
1427 st->gpo_gpiochip.set = ad74413r_gpio_set; in ad74413r_probe()
1428 st->gpo_gpiochip.set_multiple = ad74413r_gpio_set_multiple; in ad74413r_probe()
1429 st->gpo_gpiochip.set_config = ad74413r_gpio_set_gpo_config; in ad74413r_probe()
1430 st->gpo_gpiochip.get_direction = in ad74413r_probe()
1433 ret = devm_gpiochip_add_data(st->dev, &st->gpo_gpiochip, st); in ad74413r_probe()
1438 if (st->num_comparator_gpios) { in ad74413r_probe()
1439 st->comp_gpiochip.owner = THIS_MODULE; in ad74413r_probe()
1440 st->comp_gpiochip.label = st->chip_info->name; in ad74413r_probe()
1441 st->comp_gpiochip.base = -1; in ad74413r_probe()
1442 st->comp_gpiochip.ngpio = st->num_comparator_gpios; in ad74413r_probe()
1443 st->comp_gpiochip.parent = st->dev; in ad74413r_probe()
1444 st->comp_gpiochip.can_sleep = true; in ad74413r_probe()
1445 st->comp_gpiochip.get = ad74413r_gpio_get; in ad74413r_probe()
1446 st->comp_gpiochip.get_multiple = ad74413r_gpio_get_multiple; in ad74413r_probe()
1447 st->comp_gpiochip.set_config = ad74413r_gpio_set_comp_config; in ad74413r_probe()
1448 st->comp_gpiochip.get_direction = in ad74413r_probe()
1451 ret = devm_gpiochip_add_data(st->dev, &st->comp_gpiochip, st); in ad74413r_probe()
1460 ret = devm_request_irq(st->dev, spi->irq, ad74413r_adc_data_interrupt, in ad74413r_probe()
1461 0, st->chip_info->name, indio_dev); in ad74413r_probe()
1463 return dev_err_probe(st->dev, ret, "Failed to request irq\n"); in ad74413r_probe()
1465 ret = devm_iio_triggered_buffer_setup(st->dev, indio_dev, in ad74413r_probe()
1472 return devm_iio_device_register(st->dev, indio_dev); in ad74413r_probe()