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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * I2C bus interface to Cirrus Logic Madera codecs
4 *
5 * Copyright (C) 2015-2018 Cirrus Logic
6 */
7
8#include <linux/device.h>
9#include <linux/err.h>
10#include <linux/i2c.h>
11#include <linux/module.h>
12#include <linux/of.h>
13#include <linux/regmap.h>
14
15#include <linux/mfd/madera/core.h>
16
17#include "madera.h"
18
19static int madera_i2c_probe(struct i2c_client *i2c)
20{
21 struct madera *madera;
22 const struct regmap_config *regmap_16bit_config = NULL;
23 const struct regmap_config *regmap_32bit_config = NULL;
24 unsigned long type;
25 const char *name;
26 int ret;
27
28 type = (uintptr_t)i2c_get_match_data(i2c);
29 switch (type) {
30 case CS47L15:
31 if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
32 regmap_16bit_config = &cs47l15_16bit_i2c_regmap;
33 regmap_32bit_config = &cs47l15_32bit_i2c_regmap;
34 }
35 break;
36 case CS47L35:
37 if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
38 regmap_16bit_config = &cs47l35_16bit_i2c_regmap;
39 regmap_32bit_config = &cs47l35_32bit_i2c_regmap;
40 }
41 break;
42 case CS47L85:
43 case WM1840:
44 if (IS_ENABLED(CONFIG_MFD_CS47L85)) {
45 regmap_16bit_config = &cs47l85_16bit_i2c_regmap;
46 regmap_32bit_config = &cs47l85_32bit_i2c_regmap;
47 }
48 break;
49 case CS47L90:
50 case CS47L91:
51 if (IS_ENABLED(CONFIG_MFD_CS47L90)) {
52 regmap_16bit_config = &cs47l90_16bit_i2c_regmap;
53 regmap_32bit_config = &cs47l90_32bit_i2c_regmap;
54 }
55 break;
56 case CS42L92:
57 case CS47L92:
58 case CS47L93:
59 if (IS_ENABLED(CONFIG_MFD_CS47L92)) {
60 regmap_16bit_config = &cs47l92_16bit_i2c_regmap;
61 regmap_32bit_config = &cs47l92_32bit_i2c_regmap;
62 }
63 break;
64 default:
65 dev_err(&i2c->dev,
66 "Unknown Madera I2C device type %ld\n", type);
67 return -EINVAL;
68 }
69
70 name = madera_name_from_type(type);
71
72 if (!regmap_16bit_config) {
73 /* it's polite to say which codec isn't built into the kernel */
74 dev_err(&i2c->dev,
75 "Kernel does not include support for %s\n", name);
76 return -EINVAL;
77 }
78
79 madera = devm_kzalloc(&i2c->dev, sizeof(*madera), GFP_KERNEL);
80 if (!madera)
81 return -ENOMEM;
82
83 madera->regmap = devm_regmap_init_i2c(i2c, regmap_16bit_config);
84 if (IS_ERR(madera->regmap)) {
85 ret = PTR_ERR(madera->regmap);
86 dev_err(&i2c->dev,
87 "Failed to allocate 16-bit register map: %d\n", ret);
88 return ret;
89 }
90
91 madera->regmap_32bit = devm_regmap_init_i2c(i2c, regmap_32bit_config);
92 if (IS_ERR(madera->regmap_32bit)) {
93 ret = PTR_ERR(madera->regmap_32bit);
94 dev_err(&i2c->dev,
95 "Failed to allocate 32-bit register map: %d\n", ret);
96 return ret;
97 }
98
99 madera->type = type;
100 madera->type_name = name;
101 madera->dev = &i2c->dev;
102 madera->irq = i2c->irq;
103
104 return madera_dev_init(madera);
105}
106
107static void madera_i2c_remove(struct i2c_client *i2c)
108{
109 struct madera *madera = dev_get_drvdata(&i2c->dev);
110
111 madera_dev_exit(madera);
112}
113
114static const struct i2c_device_id madera_i2c_id[] = {
115 { "cs47l15", CS47L15 },
116 { "cs47l35", CS47L35 },
117 { "cs47l85", CS47L85 },
118 { "cs47l90", CS47L90 },
119 { "cs47l91", CS47L91 },
120 { "cs42l92", CS42L92 },
121 { "cs47l92", CS47L92 },
122 { "cs47l93", CS47L93 },
123 { "wm1840", WM1840 },
124 { }
125};
126MODULE_DEVICE_TABLE(i2c, madera_i2c_id);
127
128static struct i2c_driver madera_i2c_driver = {
129 .driver = {
130 .name = "madera",
131 .pm = &madera_pm_ops,
132 .of_match_table = of_match_ptr(madera_of_match),
133 },
134 .probe = madera_i2c_probe,
135 .remove = madera_i2c_remove,
136 .id_table = madera_i2c_id,
137};
138
139module_i2c_driver(madera_i2c_driver);
140
141MODULE_DESCRIPTION("Madera I2C bus interface");
142MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
143MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * I2C bus interface to Cirrus Logic Madera codecs
4 *
5 * Copyright (C) 2015-2018 Cirrus Logic
6 */
7
8#include <linux/device.h>
9#include <linux/err.h>
10#include <linux/i2c.h>
11#include <linux/module.h>
12#include <linux/of.h>
13#include <linux/of_device.h>
14#include <linux/regmap.h>
15
16#include <linux/mfd/madera/core.h>
17
18#include "madera.h"
19
20static int madera_i2c_probe(struct i2c_client *i2c,
21 const struct i2c_device_id *id)
22{
23 struct madera *madera;
24 const struct regmap_config *regmap_16bit_config = NULL;
25 const struct regmap_config *regmap_32bit_config = NULL;
26 const void *of_data;
27 unsigned long type;
28 const char *name;
29 int ret;
30
31 of_data = of_device_get_match_data(&i2c->dev);
32 if (of_data)
33 type = (unsigned long)of_data;
34 else
35 type = id->driver_data;
36
37 switch (type) {
38 case CS47L15:
39 if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
40 regmap_16bit_config = &cs47l15_16bit_i2c_regmap;
41 regmap_32bit_config = &cs47l15_32bit_i2c_regmap;
42 }
43 break;
44 case CS47L35:
45 if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
46 regmap_16bit_config = &cs47l35_16bit_i2c_regmap;
47 regmap_32bit_config = &cs47l35_32bit_i2c_regmap;
48 }
49 break;
50 case CS47L85:
51 case WM1840:
52 if (IS_ENABLED(CONFIG_MFD_CS47L85)) {
53 regmap_16bit_config = &cs47l85_16bit_i2c_regmap;
54 regmap_32bit_config = &cs47l85_32bit_i2c_regmap;
55 }
56 break;
57 case CS47L90:
58 case CS47L91:
59 if (IS_ENABLED(CONFIG_MFD_CS47L90)) {
60 regmap_16bit_config = &cs47l90_16bit_i2c_regmap;
61 regmap_32bit_config = &cs47l90_32bit_i2c_regmap;
62 }
63 break;
64 case CS42L92:
65 case CS47L92:
66 case CS47L93:
67 if (IS_ENABLED(CONFIG_MFD_CS47L92)) {
68 regmap_16bit_config = &cs47l92_16bit_i2c_regmap;
69 regmap_32bit_config = &cs47l92_32bit_i2c_regmap;
70 }
71 break;
72 default:
73 dev_err(&i2c->dev,
74 "Unknown Madera I2C device type %ld\n", type);
75 return -EINVAL;
76 }
77
78 name = madera_name_from_type(type);
79
80 if (!regmap_16bit_config) {
81 /* it's polite to say which codec isn't built into the kernel */
82 dev_err(&i2c->dev,
83 "Kernel does not include support for %s\n", name);
84 return -EINVAL;
85 }
86
87 madera = devm_kzalloc(&i2c->dev, sizeof(*madera), GFP_KERNEL);
88 if (!madera)
89 return -ENOMEM;
90
91
92 madera->regmap = devm_regmap_init_i2c(i2c, regmap_16bit_config);
93 if (IS_ERR(madera->regmap)) {
94 ret = PTR_ERR(madera->regmap);
95 dev_err(&i2c->dev,
96 "Failed to allocate 16-bit register map: %d\n", ret);
97 return ret;
98 }
99
100 madera->regmap_32bit = devm_regmap_init_i2c(i2c, regmap_32bit_config);
101 if (IS_ERR(madera->regmap_32bit)) {
102 ret = PTR_ERR(madera->regmap_32bit);
103 dev_err(&i2c->dev,
104 "Failed to allocate 32-bit register map: %d\n", ret);
105 return ret;
106 }
107
108 madera->type = type;
109 madera->type_name = name;
110 madera->dev = &i2c->dev;
111 madera->irq = i2c->irq;
112
113 return madera_dev_init(madera);
114}
115
116static int madera_i2c_remove(struct i2c_client *i2c)
117{
118 struct madera *madera = dev_get_drvdata(&i2c->dev);
119
120 madera_dev_exit(madera);
121
122 return 0;
123}
124
125static const struct i2c_device_id madera_i2c_id[] = {
126 { "cs47l15", CS47L15 },
127 { "cs47l35", CS47L35 },
128 { "cs47l85", CS47L85 },
129 { "cs47l90", CS47L90 },
130 { "cs47l91", CS47L91 },
131 { "cs42l92", CS42L92 },
132 { "cs47l92", CS47L92 },
133 { "cs47l93", CS47L93 },
134 { "wm1840", WM1840 },
135 { }
136};
137MODULE_DEVICE_TABLE(i2c, madera_i2c_id);
138
139static struct i2c_driver madera_i2c_driver = {
140 .driver = {
141 .name = "madera",
142 .pm = &madera_pm_ops,
143 .of_match_table = of_match_ptr(madera_of_match),
144 },
145 .probe = madera_i2c_probe,
146 .remove = madera_i2c_remove,
147 .id_table = madera_i2c_id,
148};
149
150module_i2c_driver(madera_i2c_driver);
151
152MODULE_DESCRIPTION("Madera I2C bus interface");
153MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
154MODULE_LICENSE("GPL v2");