projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ca693001 PC |
1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* | |
| 3 | * AD7091R5 Analog to Digital converter driver | |
| 4 | * | |
| 5 | * Copyright 2014-2019 Analog Devices Inc. | |
| 6 | */ | |
| 7 | ||
| 8 | #include <linux/i2c.h> | |
| 9 | #include <linux/iio/iio.h> | |
| 10 | #include <linux/module.h> | |
| 11 | #include <linux/regmap.h> | |
| 12 | ||
| 13 | #include "ad7091r-base.h" | |
| 14 | ||
| 15 | static const struct iio_event_spec ad7091r5_events[] = { | |
| 16 | { | |
| 17 | .type = IIO_EV_TYPE_THRESH, | |
| 18 | .dir = IIO_EV_DIR_RISING, | |
| 19 | .mask_separate = BIT(IIO_EV_INFO_VALUE) | | |
| 20 | BIT(IIO_EV_INFO_ENABLE), | |
| 21 | }, | |
| 22 | { | |
| 23 | .type = IIO_EV_TYPE_THRESH, | |
| 24 | .dir = IIO_EV_DIR_FALLING, | |
| 25 | .mask_separate = BIT(IIO_EV_INFO_VALUE) | | |
| 26 | BIT(IIO_EV_INFO_ENABLE), | |
| 27 | }, | |
| 28 | { | |
| 29 | .type = IIO_EV_TYPE_THRESH, | |
| 30 | .dir = IIO_EV_DIR_EITHER, | |
| 31 | .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS), | |
| 32 | }, | |
| 33 | }; | |
| 34 | ||
| 35 | #define AD7091R_CHANNEL(idx, bits, ev, num_ev) { \ | |
| 36 | .type = IIO_VOLTAGE, \ | |
| 37 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ | |
| 260442cc | 38 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ |
| ca693001 PC |
39 | .indexed = 1, \ |
| 40 | .channel = idx, \ | |
| 41 | .event_spec = ev, \ | |
| 42 | .num_event_specs = num_ev, \ | |
| 260442cc PC |
43 | .scan_type.storagebits = 16, \ |
| 44 | .scan_type.realbits = bits, \ | |
| ca693001 PC |
45 | } |
| 46 | static const struct iio_chan_spec ad7091r5_channels_irq[] = { | |
| 47 | AD7091R_CHANNEL(0, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), | |
| 48 | AD7091R_CHANNEL(1, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), | |
| 49 | AD7091R_CHANNEL(2, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), | |
| 50 | AD7091R_CHANNEL(3, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)), | |
| 51 | }; | |
| 52 | ||
| 53 | static const struct iio_chan_spec ad7091r5_channels_noirq[] = { | |
| 54 | AD7091R_CHANNEL(0, 12, NULL, 0), | |
| 55 | AD7091R_CHANNEL(1, 12, NULL, 0), | |
| 56 | AD7091R_CHANNEL(2, 12, NULL, 0), | |
| 57 | AD7091R_CHANNEL(3, 12, NULL, 0), | |
| 58 | }; | |
| 59 | ||
| 60 | static const struct ad7091r_chip_info ad7091r5_chip_info_irq = { | |
| 61 | .channels = ad7091r5_channels_irq, | |
| 62 | .num_channels = ARRAY_SIZE(ad7091r5_channels_irq), | |
| 260442cc | 63 | .vref_mV = 2500, |
| ca693001 PC |
64 | }; |
| 65 | ||
| 66 | static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = { | |
| 67 | .channels = ad7091r5_channels_noirq, | |
| 68 | .num_channels = ARRAY_SIZE(ad7091r5_channels_noirq), | |
| 260442cc | 69 | .vref_mV = 2500, |
| ca693001 PC |
70 | }; |
| 71 | ||
| fe44f073 | 72 | static int ad7091r5_i2c_probe(struct i2c_client *i2c) |
| ca693001 | 73 | { |
| fe44f073 | 74 | const struct i2c_device_id *id = i2c_client_get_device_id(i2c); |
| ca693001 PC |
75 | const struct ad7091r_chip_info *chip_info; |
| 76 | struct regmap *map = devm_regmap_init_i2c(i2c, &ad7091r_regmap_config); | |
| 77 | ||
| 78 | if (IS_ERR(map)) | |
| 79 | return PTR_ERR(map); | |
| 80 | ||
| 81 | if (i2c->irq) | |
| 82 | chip_info = &ad7091r5_chip_info_irq; | |
| 83 | else | |
| 84 | chip_info = &ad7091r5_chip_info_noirq; | |
| 85 | ||
| 86 | return ad7091r_probe(&i2c->dev, id->name, chip_info, map, i2c->irq); | |
| 87 | } | |
| 88 | ||
| 89 | static const struct of_device_id ad7091r5_dt_ids[] = { | |
| 90 | { .compatible = "adi,ad7091r5" }, | |
| 91 | {}, | |
| 92 | }; | |
| 93 | MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids); | |
| 94 | ||
| 95 | static const struct i2c_device_id ad7091r5_i2c_ids[] = { | |
| 96 | {"ad7091r5", 0}, | |
| 97 | {} | |
| 98 | }; | |
| 99 | MODULE_DEVICE_TABLE(i2c, ad7091r5_i2c_ids); | |
| 100 | ||
| 101 | static struct i2c_driver ad7091r5_driver = { | |
| 102 | .driver = { | |
| 103 | .name = "ad7091r5", | |
| 104 | .of_match_table = ad7091r5_dt_ids, | |
| 105 | }, | |
| fe44f073 | 106 | .probe_new = ad7091r5_i2c_probe, |
| ca693001 PC |
107 | .id_table = ad7091r5_i2c_ids, |
| 108 | }; | |
| 109 | module_i2c_driver(ad7091r5_driver); | |
| 110 | ||
| 111 | MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>"); | |
| 112 | MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver"); | |
| 113 | MODULE_LICENSE("GPL v2"); | |
| 8a0080af | 114 | MODULE_IMPORT_NS(IIO_AD7091R); |