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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 | ||
ca693001 | 15 | static const struct iio_chan_spec ad7091r5_channels_irq[] = { |
020e71c7 MS |
16 | AD7091R_CHANNEL(0, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), |
17 | AD7091R_CHANNEL(1, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), | |
18 | AD7091R_CHANNEL(2, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), | |
19 | AD7091R_CHANNEL(3, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)), | |
ca693001 PC |
20 | }; |
21 | ||
22 | static const struct iio_chan_spec ad7091r5_channels_noirq[] = { | |
23 | AD7091R_CHANNEL(0, 12, NULL, 0), | |
24 | AD7091R_CHANNEL(1, 12, NULL, 0), | |
25 | AD7091R_CHANNEL(2, 12, NULL, 0), | |
26 | AD7091R_CHANNEL(3, 12, NULL, 0), | |
27 | }; | |
28 | ||
7e3ebda3 MS |
29 | static int ad7091r5_set_mode(struct ad7091r_state *st, enum ad7091r_mode mode) |
30 | { | |
31 | int ret, conf; | |
32 | ||
33 | switch (mode) { | |
34 | case AD7091R_MODE_SAMPLE: | |
35 | conf = 0; | |
36 | break; | |
37 | case AD7091R_MODE_COMMAND: | |
38 | conf = AD7091R_REG_CONF_CMD; | |
39 | break; | |
40 | case AD7091R_MODE_AUTOCYCLE: | |
41 | conf = AD7091R_REG_CONF_AUTO; | |
42 | break; | |
43 | default: | |
44 | return -EINVAL; | |
45 | } | |
46 | ||
47 | ret = regmap_update_bits(st->map, AD7091R_REG_CONF, | |
48 | AD7091R_REG_CONF_MODE_MASK, conf); | |
49 | if (ret) | |
50 | return ret; | |
51 | ||
52 | st->mode = mode; | |
53 | ||
54 | return 0; | |
55 | } | |
56 | ||
8eb5976a MS |
57 | static unsigned int ad7091r5_reg_result_chan_id(unsigned int val) |
58 | { | |
59 | return AD7091R5_REG_RESULT_CH_ID(val); | |
60 | } | |
61 | ||
ca693001 | 62 | static const struct ad7091r_chip_info ad7091r5_chip_info_irq = { |
ca1a6790 | 63 | .name = "ad7091r-5", |
ca693001 PC |
64 | .channels = ad7091r5_channels_irq, |
65 | .num_channels = ARRAY_SIZE(ad7091r5_channels_irq), | |
260442cc | 66 | .vref_mV = 2500, |
8eb5976a | 67 | .reg_result_chan_id = &ad7091r5_reg_result_chan_id, |
7e3ebda3 | 68 | .set_mode = &ad7091r5_set_mode, |
ca693001 PC |
69 | }; |
70 | ||
71 | static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = { | |
ca1a6790 | 72 | .name = "ad7091r-5", |
ca693001 PC |
73 | .channels = ad7091r5_channels_noirq, |
74 | .num_channels = ARRAY_SIZE(ad7091r5_channels_noirq), | |
260442cc | 75 | .vref_mV = 2500, |
8eb5976a | 76 | .reg_result_chan_id = &ad7091r5_reg_result_chan_id, |
7e3ebda3 | 77 | .set_mode = &ad7091r5_set_mode, |
ca693001 PC |
78 | }; |
79 | ||
ca1a6790 MS |
80 | static const struct regmap_config ad7091r_regmap_config = { |
81 | .reg_bits = 8, | |
82 | .val_bits = 16, | |
83 | .writeable_reg = ad7091r_writeable_reg, | |
84 | .volatile_reg = ad7091r_volatile_reg, | |
85 | }; | |
86 | ||
87 | static void ad7091r5_regmap_init(struct ad7091r_state *st, | |
88 | const struct regmap_config *regmap_conf) | |
89 | { | |
90 | struct i2c_client *i2c = container_of(st->dev, struct i2c_client, dev); | |
91 | ||
92 | st->map = devm_regmap_init_i2c(i2c, regmap_conf); | |
93 | } | |
94 | ||
95 | static struct ad7091r_init_info ad7091r5_init_info = { | |
96 | .info_irq = &ad7091r5_chip_info_irq, | |
97 | .info_no_irq = &ad7091r5_chip_info_noirq, | |
98 | .regmap_config = &ad7091r_regmap_config, | |
99 | .init_adc_regmap = &ad7091r5_regmap_init | |
100 | }; | |
101 | ||
fe44f073 | 102 | static int ad7091r5_i2c_probe(struct i2c_client *i2c) |
ca693001 | 103 | { |
ca1a6790 | 104 | const struct ad7091r_init_info *init_info; |
ca693001 | 105 | |
ca1a6790 MS |
106 | init_info = i2c_get_match_data(i2c); |
107 | if (!init_info) | |
108 | return -EINVAL; | |
ca693001 | 109 | |
6ff545a9 | 110 | return ad7091r_probe(&i2c->dev, init_info, i2c->irq); |
ca693001 PC |
111 | } |
112 | ||
113 | static const struct of_device_id ad7091r5_dt_ids[] = { | |
ca1a6790 | 114 | { .compatible = "adi,ad7091r5", .data = &ad7091r5_init_info }, |
09e3bdfe | 115 | { } |
ca693001 PC |
116 | }; |
117 | MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids); | |
118 | ||
119 | static const struct i2c_device_id ad7091r5_i2c_ids[] = { | |
09e3bdfe JC |
120 | { "ad7091r5", (kernel_ulong_t)&ad7091r5_init_info }, |
121 | { } | |
ca693001 PC |
122 | }; |
123 | MODULE_DEVICE_TABLE(i2c, ad7091r5_i2c_ids); | |
124 | ||
125 | static struct i2c_driver ad7091r5_driver = { | |
126 | .driver = { | |
127 | .name = "ad7091r5", | |
128 | .of_match_table = ad7091r5_dt_ids, | |
129 | }, | |
7cf15f42 | 130 | .probe = ad7091r5_i2c_probe, |
ca693001 PC |
131 | .id_table = ad7091r5_i2c_ids, |
132 | }; | |
133 | module_i2c_driver(ad7091r5_driver); | |
134 | ||
135 | MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>"); | |
136 | MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver"); | |
137 | MODULE_LICENSE("GPL v2"); | |
8a0080af | 138 | MODULE_IMPORT_NS(IIO_AD7091R); |