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 | |
23 | static int arizona_i2c_probe(struct i2c_client *i2c) |
24 | { |
25 | struct arizona *arizona; |
26 | const struct regmap_config *regmap_config = NULL; |
27 | unsigned long type; |
28 | int ret; |
29 | |
30 | type = (uintptr_t)i2c_get_match_data(client: i2c); |
31 | switch (type) { |
32 | case WM5102: |
33 | if (IS_ENABLED(CONFIG_MFD_WM5102)) |
34 | regmap_config = &wm5102_i2c_regmap; |
35 | break; |
36 | case WM5110: |
37 | case WM8280: |
38 | if (IS_ENABLED(CONFIG_MFD_WM5110)) |
39 | regmap_config = &wm5110_i2c_regmap; |
40 | break; |
41 | case WM8997: |
42 | if (IS_ENABLED(CONFIG_MFD_WM8997)) |
43 | regmap_config = &wm8997_i2c_regmap; |
44 | break; |
45 | case WM8998: |
46 | case WM1814: |
47 | if (IS_ENABLED(CONFIG_MFD_WM8998)) |
48 | regmap_config = &wm8998_i2c_regmap; |
49 | break; |
50 | default: |
51 | dev_err(&i2c->dev, "Unknown device type %ld\n" , type); |
52 | return -EINVAL; |
53 | } |
54 | |
55 | if (!regmap_config) { |
56 | dev_err(&i2c->dev, |
57 | "No kernel support for device type %ld\n" , type); |
58 | return -EINVAL; |
59 | } |
60 | |
61 | arizona = devm_kzalloc(dev: &i2c->dev, size: sizeof(*arizona), GFP_KERNEL); |
62 | if (arizona == NULL) |
63 | return -ENOMEM; |
64 | |
65 | arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config); |
66 | if (IS_ERR(ptr: arizona->regmap)) { |
67 | ret = PTR_ERR(ptr: arizona->regmap); |
68 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n" , |
69 | ret); |
70 | return ret; |
71 | } |
72 | |
73 | arizona->type = type; |
74 | arizona->dev = &i2c->dev; |
75 | arizona->irq = i2c->irq; |
76 | |
77 | return arizona_dev_init(arizona); |
78 | } |
79 | |
80 | static void arizona_i2c_remove(struct i2c_client *i2c) |
81 | { |
82 | struct arizona *arizona = dev_get_drvdata(dev: &i2c->dev); |
83 | |
84 | arizona_dev_exit(arizona); |
85 | } |
86 | |
87 | static const struct i2c_device_id arizona_i2c_id[] = { |
88 | { "wm5102" , WM5102 }, |
89 | { "wm5110" , WM5110 }, |
90 | { "wm8280" , WM8280 }, |
91 | { "wm8997" , WM8997 }, |
92 | { "wm8998" , WM8998 }, |
93 | { "wm1814" , WM1814 }, |
94 | { } |
95 | }; |
96 | MODULE_DEVICE_TABLE(i2c, arizona_i2c_id); |
97 | |
98 | #ifdef CONFIG_OF |
99 | static const struct of_device_id arizona_i2c_of_match[] = { |
100 | { .compatible = "wlf,wm5102" , .data = (void *)WM5102 }, |
101 | { .compatible = "wlf,wm5110" , .data = (void *)WM5110 }, |
102 | { .compatible = "wlf,wm8280" , .data = (void *)WM8280 }, |
103 | { .compatible = "wlf,wm8997" , .data = (void *)WM8997 }, |
104 | { .compatible = "wlf,wm8998" , .data = (void *)WM8998 }, |
105 | { .compatible = "wlf,wm1814" , .data = (void *)WM1814 }, |
106 | {}, |
107 | }; |
108 | MODULE_DEVICE_TABLE(of, arizona_i2c_of_match); |
109 | #endif |
110 | |
111 | static struct i2c_driver arizona_i2c_driver = { |
112 | .driver = { |
113 | .name = "arizona" , |
114 | .pm = pm_ptr(&arizona_pm_ops), |
115 | .of_match_table = of_match_ptr(arizona_i2c_of_match), |
116 | }, |
117 | .probe = arizona_i2c_probe, |
118 | .remove = arizona_i2c_remove, |
119 | .id_table = arizona_i2c_id, |
120 | }; |
121 | |
122 | module_i2c_driver(arizona_i2c_driver); |
123 | |
124 | MODULE_SOFTDEP("pre: arizona_ldo1" ); |
125 | MODULE_DESCRIPTION("Arizona I2C bus interface" ); |
126 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>" ); |
127 | MODULE_LICENSE("GPL" ); |
128 | |