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