// SPDX-License-Identifier: GPL-2.0 /* * AD7091R5 Analog to Digital converter driver * * Copyright 2014-2019 Analog Devices Inc. */ #include <linux/i2c.h> #include <linux/iio/iio.h> #include <linux/module.h> #include <linux/regmap.h> #include "ad7091r-base.h" static const struct iio_event_spec ad7091r5_events[] = { { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_RISING, .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE), }, { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_FALLING, .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE), }, { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_EITHER, .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS), }, }; #define AD7091R_CHANNEL(idx, bits, ev, num_ev) { \ .type = IIO_VOLTAGE, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ .indexed = 1, \ .channel = idx, \ .event_spec = ev, \ .num_event_specs = num_ev, \ .scan_type.storagebits = 16, \ .scan_type.realbits = bits, \ } static const struct iio_chan_spec ad7091r5_channels_irq[] = { AD7091R_CHANNEL(0, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), AD7091R_CHANNEL(1, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), AD7091R_CHANNEL(2, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), AD7091R_CHANNEL(3, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), }; static const struct iio_chan_spec ad7091r5_channels_noirq[] = { AD7091R_CHANNEL(0, 12, NULL, 0), AD7091R_CHANNEL(1, 12, NULL, 0), AD7091R_CHANNEL(2, 12, NULL, 0), AD7091R_CHANNEL(3, 12, NULL, 0), }; static const struct ad7091r_chip_info ad7091r5_chip_info_irq = { .channels = ad7091r5_channels_irq, .num_channels = ARRAY_SIZE(ad7091r5_channels_irq), .vref_mV = 2500, }; static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = { .channels = ad7091r5_channels_noirq, .num_channels = ARRAY_SIZE(ad7091r5_channels_noirq), .vref_mV = 2500, }; static int ad7091r5_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { const struct ad7091r_chip_info *chip_info; struct regmap *map = devm_regmap_init_i2c(i2c, &ad7091r_regmap_config); if (IS_ERR(map)) return PTR_ERR(map); if (i2c->irq) chip_info = &ad7091r5_chip_info_irq; else chip_info = &ad7091r5_chip_info_noirq; return ad7091r_probe(&i2c->dev, id->name, chip_info, map, i2c->irq); } static const struct of_device_id ad7091r5_dt_ids[] = { { .compatible = "adi,ad7091r5" }, {}, }; MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids); static const struct i2c_device_id ad7091r5_i2c_ids[] = { {"ad7091r5", 0}, {} }; MODULE_DEVICE_TABLE(i2c, ad7091r5_i2c_ids); static struct i2c_driver ad7091r5_driver = { .driver = { .name = "ad7091r5", .of_match_table = ad7091r5_dt_ids, }, .probe = ad7091r5_i2c_probe, .id_table = ad7091r5_i2c_ids, }; module_i2c_driver(ad7091r5_driver); MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>"); MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver"); MODULE_LICENSE("GPL v2");