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 #define AD7091R_CHANNEL(idx, bits, ev, num_ev) { \ 16 .type = IIO_VOLTAGE, \ 17 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ 18 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ 19 .indexed = 1, \ 20 .channel = idx, \ 21 .event_spec = ev, \ 22 .num_event_specs = num_ev, \ 23 .scan_type.storagebits = 16, \ 24 .scan_type.realbits = bits, \ 25 } 26 static const struct iio_chan_spec ad7091r5_channels_irq[] = { 27 AD7091R_CHANNEL(0, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), 28 AD7091R_CHANNEL(1, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), 29 AD7091R_CHANNEL(2, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), 30 AD7091R_CHANNEL(3, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), 31 }; 32 33 static const struct iio_chan_spec ad7091r5_channels_noirq[] = { 34 AD7091R_CHANNEL(0, 12, NULL, 0), 35 AD7091R_CHANNEL(1, 12, NULL, 0), 36 AD7091R_CHANNEL(2, 12, NULL, 0), 37 AD7091R_CHANNEL(3, 12, NULL, 0), 38 }; 39 40 static const struct ad7091r_chip_info ad7091r5_chip_info_irq = { 41 .channels = ad7091r5_channels_irq, 42 .num_channels = ARRAY_SIZE(ad7091r5_channels_irq), 43 .vref_mV = 2500, 44 }; 45 46 static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = { 47 .channels = ad7091r5_channels_noirq, 48 .num_channels = ARRAY_SIZE(ad7091r5_channels_noirq), 49 .vref_mV = 2500, 50 }; 51 52 static int ad7091r5_i2c_probe(struct i2c_client *i2c) 53 { 54 const struct i2c_device_id *id = i2c_client_get_device_id(i2c); 55 const struct ad7091r_chip_info *chip_info; 56 struct regmap *map = devm_regmap_init_i2c(i2c, &ad7091r_regmap_config); 57 58 if (IS_ERR(map)) 59 return PTR_ERR(map); 60 61 if (i2c->irq) 62 chip_info = &ad7091r5_chip_info_irq; 63 else 64 chip_info = &ad7091r5_chip_info_noirq; 65 66 return ad7091r_probe(&i2c->dev, id->name, chip_info, map, i2c->irq); 67 } 68 69 static const struct of_device_id ad7091r5_dt_ids[] = { 70 { .compatible = "adi,ad7091r5" }, 71 {}, 72 }; 73 MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids); 74 75 static const struct i2c_device_id ad7091r5_i2c_ids[] = { 76 {"ad7091r5", 0}, 77 {} 78 }; 79 MODULE_DEVICE_TABLE(i2c, ad7091r5_i2c_ids); 80 81 static struct i2c_driver ad7091r5_driver = { 82 .driver = { 83 .name = "ad7091r5", 84 .of_match_table = ad7091r5_dt_ids, 85 }, 86 .probe = ad7091r5_i2c_probe, 87 .id_table = ad7091r5_i2c_ids, 88 }; 89 module_i2c_driver(ad7091r5_driver); 90 91 MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>"); 92 MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver"); 93 MODULE_LICENSE("GPL v2"); 94 MODULE_IMPORT_NS(IIO_AD7091R); 95