This source file includes following definitions.
- inv_mpu6050_select_bypass
- inv_mpu6050_deselect_bypass
- inv_mpu_match_acpi_device
- inv_mpu_probe
- inv_mpu_remove
1
2
3
4
5
6 #include <linux/acpi.h>
7 #include <linux/delay.h>
8 #include <linux/err.h>
9 #include <linux/i2c.h>
10 #include <linux/iio/iio.h>
11 #include <linux/module.h>
12 #include <linux/of_device.h>
13 #include "inv_mpu_iio.h"
14
15 static const struct regmap_config inv_mpu_regmap_config = {
16 .reg_bits = 8,
17 .val_bits = 8,
18 };
19
20 static int inv_mpu6050_select_bypass(struct i2c_mux_core *muxc, u32 chan_id)
21 {
22 struct iio_dev *indio_dev = i2c_mux_priv(muxc);
23 struct inv_mpu6050_state *st = iio_priv(indio_dev);
24 int ret;
25
26 mutex_lock(&st->lock);
27
28 ret = inv_mpu6050_set_power_itg(st, true);
29 if (ret)
30 goto error_unlock;
31
32 ret = regmap_write(st->map, st->reg->int_pin_cfg,
33 st->irq_mask | INV_MPU6050_BIT_BYPASS_EN);
34
35 error_unlock:
36 mutex_unlock(&st->lock);
37
38 return ret;
39 }
40
41 static int inv_mpu6050_deselect_bypass(struct i2c_mux_core *muxc, u32 chan_id)
42 {
43 struct iio_dev *indio_dev = i2c_mux_priv(muxc);
44 struct inv_mpu6050_state *st = iio_priv(indio_dev);
45
46 mutex_lock(&st->lock);
47
48
49 regmap_write(st->map, st->reg->int_pin_cfg, st->irq_mask);
50 inv_mpu6050_set_power_itg(st, false);
51
52 mutex_unlock(&st->lock);
53
54 return 0;
55 }
56
57 static const char *inv_mpu_match_acpi_device(struct device *dev,
58 enum inv_devices *chip_id)
59 {
60 const struct acpi_device_id *id;
61
62 id = acpi_match_device(dev->driver->acpi_match_table, dev);
63 if (!id)
64 return NULL;
65
66 *chip_id = (int)id->driver_data;
67
68 return dev_name(dev);
69 }
70
71
72
73
74
75
76
77
78 static int inv_mpu_probe(struct i2c_client *client,
79 const struct i2c_device_id *id)
80 {
81 struct inv_mpu6050_state *st;
82 int result;
83 enum inv_devices chip_type;
84 struct regmap *regmap;
85 const char *name;
86
87 if (!i2c_check_functionality(client->adapter,
88 I2C_FUNC_SMBUS_I2C_BLOCK))
89 return -EOPNOTSUPP;
90
91 if (client->dev.of_node) {
92 chip_type = (enum inv_devices)
93 of_device_get_match_data(&client->dev);
94 name = client->name;
95 } else if (id) {
96 chip_type = (enum inv_devices)
97 id->driver_data;
98 name = id->name;
99 } else if (ACPI_HANDLE(&client->dev)) {
100 name = inv_mpu_match_acpi_device(&client->dev, &chip_type);
101 if (!name)
102 return -ENODEV;
103 } else {
104 return -ENOSYS;
105 }
106
107 regmap = devm_regmap_init_i2c(client, &inv_mpu_regmap_config);
108 if (IS_ERR(regmap)) {
109 dev_err(&client->dev, "Failed to register i2c regmap %d\n",
110 (int)PTR_ERR(regmap));
111 return PTR_ERR(regmap);
112 }
113
114 result = inv_mpu_core_probe(regmap, client->irq, name,
115 NULL, chip_type);
116 if (result < 0)
117 return result;
118
119 st = iio_priv(dev_get_drvdata(&client->dev));
120 switch (st->chip_type) {
121 case INV_ICM20608:
122 case INV_ICM20602:
123
124 break;
125 default:
126
127 st->muxc = i2c_mux_alloc(client->adapter, &client->dev,
128 1, 0, I2C_MUX_LOCKED | I2C_MUX_GATE,
129 inv_mpu6050_select_bypass,
130 inv_mpu6050_deselect_bypass);
131 if (!st->muxc)
132 return -ENOMEM;
133 st->muxc->priv = dev_get_drvdata(&client->dev);
134 result = i2c_mux_add_adapter(st->muxc, 0, 0, 0);
135 if (result)
136 return result;
137 result = inv_mpu_acpi_create_mux_client(client);
138 if (result)
139 goto out_del_mux;
140 break;
141 }
142
143 return 0;
144
145 out_del_mux:
146 i2c_mux_del_adapters(st->muxc);
147 return result;
148 }
149
150 static int inv_mpu_remove(struct i2c_client *client)
151 {
152 struct iio_dev *indio_dev = i2c_get_clientdata(client);
153 struct inv_mpu6050_state *st = iio_priv(indio_dev);
154
155 if (st->muxc) {
156 inv_mpu_acpi_delete_mux_client(client);
157 i2c_mux_del_adapters(st->muxc);
158 }
159
160 return 0;
161 }
162
163
164
165
166
167 static const struct i2c_device_id inv_mpu_id[] = {
168 {"mpu6050", INV_MPU6050},
169 {"mpu6500", INV_MPU6500},
170 {"mpu6515", INV_MPU6515},
171 {"mpu9150", INV_MPU9150},
172 {"mpu9250", INV_MPU9250},
173 {"mpu9255", INV_MPU9255},
174 {"icm20608", INV_ICM20608},
175 {"icm20602", INV_ICM20602},
176 {}
177 };
178
179 MODULE_DEVICE_TABLE(i2c, inv_mpu_id);
180
181 static const struct of_device_id inv_of_match[] = {
182 {
183 .compatible = "invensense,mpu6050",
184 .data = (void *)INV_MPU6050
185 },
186 {
187 .compatible = "invensense,mpu6500",
188 .data = (void *)INV_MPU6500
189 },
190 {
191 .compatible = "invensense,mpu6515",
192 .data = (void *)INV_MPU6515
193 },
194 {
195 .compatible = "invensense,mpu9150",
196 .data = (void *)INV_MPU9150
197 },
198 {
199 .compatible = "invensense,mpu9250",
200 .data = (void *)INV_MPU9250
201 },
202 {
203 .compatible = "invensense,mpu9255",
204 .data = (void *)INV_MPU9255
205 },
206 {
207 .compatible = "invensense,icm20608",
208 .data = (void *)INV_ICM20608
209 },
210 {
211 .compatible = "invensense,icm20602",
212 .data = (void *)INV_ICM20602
213 },
214 { }
215 };
216 MODULE_DEVICE_TABLE(of, inv_of_match);
217
218 static const struct acpi_device_id inv_acpi_match[] = {
219 {"INVN6500", INV_MPU6500},
220 { },
221 };
222
223 MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
224
225 static struct i2c_driver inv_mpu_driver = {
226 .probe = inv_mpu_probe,
227 .remove = inv_mpu_remove,
228 .id_table = inv_mpu_id,
229 .driver = {
230 .of_match_table = inv_of_match,
231 .acpi_match_table = ACPI_PTR(inv_acpi_match),
232 .name = "inv-mpu6050-i2c",
233 .pm = &inv_mpu_pmops,
234 },
235 };
236
237 module_i2c_driver(inv_mpu_driver);
238
239 MODULE_AUTHOR("Invensense Corporation");
240 MODULE_DESCRIPTION("Invensense device MPU6050 driver");
241 MODULE_LICENSE("GPL");