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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Arizona-i2c.c -- Arizona I2C bus interface
4 *
5 * Copyright 2012 Wolfson Microelectronics plc
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 */
9
10#include <linux/err.h>
11#include <linux/i2c.h>
12#include <linux/module.h>
13#include <linux/pm_runtime.h>
14#include <linux/regmap.h>
15#include <linux/regulator/consumer.h>
16#include <linux/slab.h>
17#include <linux/of.h>
18
19#include <linux/mfd/arizona/core.h>
20
21#include "arizona.h"
22
23static int arizona_i2c_probe(struct i2c_client *i2c,
24 const struct i2c_device_id *id)
25{
26 struct arizona *arizona;
27 const struct regmap_config *regmap_config = NULL;
28 unsigned long type;
29 int ret;
30
31 if (i2c->dev.of_node)
32 type = arizona_of_get_type(&i2c->dev);
33 else
34 type = id->driver_data;
35
36 switch (type) {
37 case WM5102:
38 if (IS_ENABLED(CONFIG_MFD_WM5102))
39 regmap_config = &wm5102_i2c_regmap;
40 break;
41 case WM5110:
42 case WM8280:
43 if (IS_ENABLED(CONFIG_MFD_WM5110))
44 regmap_config = &wm5110_i2c_regmap;
45 break;
46 case WM8997:
47 if (IS_ENABLED(CONFIG_MFD_WM8997))
48 regmap_config = &wm8997_i2c_regmap;
49 break;
50 case WM8998:
51 case WM1814:
52 if (IS_ENABLED(CONFIG_MFD_WM8998))
53 regmap_config = &wm8998_i2c_regmap;
54 break;
55 default:
56 dev_err(&i2c->dev, "Unknown device type %ld\n", type);
57 return -EINVAL;
58 }
59
60 if (!regmap_config) {
61 dev_err(&i2c->dev,
62 "No kernel support for device type %ld\n", type);
63 return -EINVAL;
64 }
65
66 arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
67 if (arizona == NULL)
68 return -ENOMEM;
69
70 arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
71 if (IS_ERR(arizona->regmap)) {
72 ret = PTR_ERR(arizona->regmap);
73 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
74 ret);
75 return ret;
76 }
77
78 arizona->type = type;
79 arizona->dev = &i2c->dev;
80 arizona->irq = i2c->irq;
81
82 return arizona_dev_init(arizona);
83}
84
85static int arizona_i2c_remove(struct i2c_client *i2c)
86{
87 struct arizona *arizona = dev_get_drvdata(&i2c->dev);
88
89 arizona_dev_exit(arizona);
90
91 return 0;
92}
93
94static const struct i2c_device_id arizona_i2c_id[] = {
95 { "wm5102", WM5102 },
96 { "wm5110", WM5110 },
97 { "wm8280", WM8280 },
98 { "wm8997", WM8997 },
99 { "wm8998", WM8998 },
100 { "wm1814", WM1814 },
101 { }
102};
103MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
104
105static struct i2c_driver arizona_i2c_driver = {
106 .driver = {
107 .name = "arizona",
108 .pm = &arizona_pm_ops,
109 .of_match_table = of_match_ptr(arizona_of_match),
110 },
111 .probe = arizona_i2c_probe,
112 .remove = arizona_i2c_remove,
113 .id_table = arizona_i2c_id,
114};
115
116module_i2c_driver(arizona_i2c_driver);
117
118MODULE_DESCRIPTION("Arizona I2C bus interface");
119MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
120MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Arizona-i2c.c -- Arizona I2C bus interface
4 *
5 * Copyright 2012 Wolfson Microelectronics plc
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 */
9
10#include <linux/err.h>
11#include <linux/i2c.h>
12#include <linux/module.h>
13#include <linux/pm_runtime.h>
14#include <linux/regmap.h>
15#include <linux/regulator/consumer.h>
16#include <linux/slab.h>
17#include <linux/of.h>
18
19#include <linux/mfd/arizona/core.h>
20
21#include "arizona.h"
22
23static int arizona_i2c_probe(struct i2c_client *i2c)
24{
25 const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
26 const void *match_data;
27 struct arizona *arizona;
28 const struct regmap_config *regmap_config = NULL;
29 unsigned long type = 0;
30 int ret;
31
32 match_data = device_get_match_data(&i2c->dev);
33 if (match_data)
34 type = (unsigned long)match_data;
35 else if (id)
36 type = id->driver_data;
37
38 switch (type) {
39 case WM5102:
40 if (IS_ENABLED(CONFIG_MFD_WM5102))
41 regmap_config = &wm5102_i2c_regmap;
42 break;
43 case WM5110:
44 case WM8280:
45 if (IS_ENABLED(CONFIG_MFD_WM5110))
46 regmap_config = &wm5110_i2c_regmap;
47 break;
48 case WM8997:
49 if (IS_ENABLED(CONFIG_MFD_WM8997))
50 regmap_config = &wm8997_i2c_regmap;
51 break;
52 case WM8998:
53 case WM1814:
54 if (IS_ENABLED(CONFIG_MFD_WM8998))
55 regmap_config = &wm8998_i2c_regmap;
56 break;
57 default:
58 dev_err(&i2c->dev, "Unknown device type %ld\n", type);
59 return -EINVAL;
60 }
61
62 if (!regmap_config) {
63 dev_err(&i2c->dev,
64 "No kernel support for device type %ld\n", type);
65 return -EINVAL;
66 }
67
68 arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
69 if (arizona == NULL)
70 return -ENOMEM;
71
72 arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
73 if (IS_ERR(arizona->regmap)) {
74 ret = PTR_ERR(arizona->regmap);
75 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
76 ret);
77 return ret;
78 }
79
80 arizona->type = type;
81 arizona->dev = &i2c->dev;
82 arizona->irq = i2c->irq;
83
84 return arizona_dev_init(arizona);
85}
86
87static void arizona_i2c_remove(struct i2c_client *i2c)
88{
89 struct arizona *arizona = dev_get_drvdata(&i2c->dev);
90
91 arizona_dev_exit(arizona);
92}
93
94static const struct i2c_device_id arizona_i2c_id[] = {
95 { "wm5102", WM5102 },
96 { "wm5110", WM5110 },
97 { "wm8280", WM8280 },
98 { "wm8997", WM8997 },
99 { "wm8998", WM8998 },
100 { "wm1814", WM1814 },
101 { }
102};
103MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
104
105#ifdef CONFIG_OF
106static const struct of_device_id arizona_i2c_of_match[] = {
107 { .compatible = "wlf,wm5102", .data = (void *)WM5102 },
108 { .compatible = "wlf,wm5110", .data = (void *)WM5110 },
109 { .compatible = "wlf,wm8280", .data = (void *)WM8280 },
110 { .compatible = "wlf,wm8997", .data = (void *)WM8997 },
111 { .compatible = "wlf,wm8998", .data = (void *)WM8998 },
112 { .compatible = "wlf,wm1814", .data = (void *)WM1814 },
113 {},
114};
115#endif
116
117static struct i2c_driver arizona_i2c_driver = {
118 .driver = {
119 .name = "arizona",
120 .pm = pm_ptr(&arizona_pm_ops),
121 .of_match_table = of_match_ptr(arizona_i2c_of_match),
122 },
123 .probe_new = arizona_i2c_probe,
124 .remove = arizona_i2c_remove,
125 .id_table = arizona_i2c_id,
126};
127
128module_i2c_driver(arizona_i2c_driver);
129
130MODULE_SOFTDEP("pre: arizona_ldo1");
131MODULE_DESCRIPTION("Arizona I2C bus interface");
132MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
133MODULE_LICENSE("GPL");