1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * AD7091R5 Analog to Digital converter driver
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2014-2019 Analog Devices Inc.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/i2c.h>
9*4882a593Smuzhiyun #include <linux/iio/iio.h>
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun #include <linux/regmap.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include "ad7091r-base.h"
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun static const struct iio_event_spec ad7091r5_events[] = {
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun .type = IIO_EV_TYPE_THRESH,
18*4882a593Smuzhiyun .dir = IIO_EV_DIR_RISING,
19*4882a593Smuzhiyun .mask_separate = BIT(IIO_EV_INFO_VALUE) |
20*4882a593Smuzhiyun BIT(IIO_EV_INFO_ENABLE),
21*4882a593Smuzhiyun },
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun .type = IIO_EV_TYPE_THRESH,
24*4882a593Smuzhiyun .dir = IIO_EV_DIR_FALLING,
25*4882a593Smuzhiyun .mask_separate = BIT(IIO_EV_INFO_VALUE) |
26*4882a593Smuzhiyun BIT(IIO_EV_INFO_ENABLE),
27*4882a593Smuzhiyun },
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun .type = IIO_EV_TYPE_THRESH,
30*4882a593Smuzhiyun .dir = IIO_EV_DIR_EITHER,
31*4882a593Smuzhiyun .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS),
32*4882a593Smuzhiyun },
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #define AD7091R_CHANNEL(idx, bits, ev, num_ev) { \
36*4882a593Smuzhiyun .type = IIO_VOLTAGE, \
37*4882a593Smuzhiyun .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
38*4882a593Smuzhiyun .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
39*4882a593Smuzhiyun .indexed = 1, \
40*4882a593Smuzhiyun .channel = idx, \
41*4882a593Smuzhiyun .event_spec = ev, \
42*4882a593Smuzhiyun .num_event_specs = num_ev, \
43*4882a593Smuzhiyun .scan_type.storagebits = 16, \
44*4882a593Smuzhiyun .scan_type.realbits = bits, \
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun static const struct iio_chan_spec ad7091r5_channels_irq[] = {
47*4882a593Smuzhiyun AD7091R_CHANNEL(0, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)),
48*4882a593Smuzhiyun AD7091R_CHANNEL(1, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)),
49*4882a593Smuzhiyun AD7091R_CHANNEL(2, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)),
50*4882a593Smuzhiyun AD7091R_CHANNEL(3, 12, ad7091r5_events, ARRAY_SIZE(ad7091r5_events)),
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun static const struct iio_chan_spec ad7091r5_channels_noirq[] = {
54*4882a593Smuzhiyun AD7091R_CHANNEL(0, 12, NULL, 0),
55*4882a593Smuzhiyun AD7091R_CHANNEL(1, 12, NULL, 0),
56*4882a593Smuzhiyun AD7091R_CHANNEL(2, 12, NULL, 0),
57*4882a593Smuzhiyun AD7091R_CHANNEL(3, 12, NULL, 0),
58*4882a593Smuzhiyun };
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun static const struct ad7091r_chip_info ad7091r5_chip_info_irq = {
61*4882a593Smuzhiyun .channels = ad7091r5_channels_irq,
62*4882a593Smuzhiyun .num_channels = ARRAY_SIZE(ad7091r5_channels_irq),
63*4882a593Smuzhiyun .vref_mV = 2500,
64*4882a593Smuzhiyun };
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = {
67*4882a593Smuzhiyun .channels = ad7091r5_channels_noirq,
68*4882a593Smuzhiyun .num_channels = ARRAY_SIZE(ad7091r5_channels_noirq),
69*4882a593Smuzhiyun .vref_mV = 2500,
70*4882a593Smuzhiyun };
71*4882a593Smuzhiyun
ad7091r5_i2c_probe(struct i2c_client * i2c,const struct i2c_device_id * id)72*4882a593Smuzhiyun static int ad7091r5_i2c_probe(struct i2c_client *i2c,
73*4882a593Smuzhiyun const struct i2c_device_id *id)
74*4882a593Smuzhiyun {
75*4882a593Smuzhiyun const struct ad7091r_chip_info *chip_info;
76*4882a593Smuzhiyun struct regmap *map = devm_regmap_init_i2c(i2c, &ad7091r_regmap_config);
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun if (IS_ERR(map))
79*4882a593Smuzhiyun return PTR_ERR(map);
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun if (i2c->irq)
82*4882a593Smuzhiyun chip_info = &ad7091r5_chip_info_irq;
83*4882a593Smuzhiyun else
84*4882a593Smuzhiyun chip_info = &ad7091r5_chip_info_noirq;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun return ad7091r_probe(&i2c->dev, id->name, chip_info, map, i2c->irq);
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun static const struct of_device_id ad7091r5_dt_ids[] = {
90*4882a593Smuzhiyun { .compatible = "adi,ad7091r5" },
91*4882a593Smuzhiyun {},
92*4882a593Smuzhiyun };
93*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids);
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun static const struct i2c_device_id ad7091r5_i2c_ids[] = {
96*4882a593Smuzhiyun {"ad7091r5", 0},
97*4882a593Smuzhiyun {}
98*4882a593Smuzhiyun };
99*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, ad7091r5_i2c_ids);
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun static struct i2c_driver ad7091r5_driver = {
102*4882a593Smuzhiyun .driver = {
103*4882a593Smuzhiyun .name = "ad7091r5",
104*4882a593Smuzhiyun .of_match_table = ad7091r5_dt_ids,
105*4882a593Smuzhiyun },
106*4882a593Smuzhiyun .probe = ad7091r5_i2c_probe,
107*4882a593Smuzhiyun .id_table = ad7091r5_i2c_ids,
108*4882a593Smuzhiyun };
109*4882a593Smuzhiyun module_i2c_driver(ad7091r5_driver);
110*4882a593Smuzhiyun
111*4882a593Smuzhiyun MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>");
112*4882a593Smuzhiyun MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver");
113*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
114