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fd64df16 AR |
1 | /* |
2 | * Copyright (C) 2015 Intel Corporation Inc. | |
3 | * | |
4 | * This software is licensed under the terms of the GNU General Public | |
5 | * License version 2, as published by the Free Software Foundation, and | |
6 | * may be copied, distributed, and modified under those terms. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | #include <linux/module.h> | |
14 | #include <linux/acpi.h> | |
15 | #include <linux/spi/spi.h> | |
16 | #include <linux/regmap.h> | |
17 | #include <linux/iio/iio.h> | |
18 | #include "inv_mpu_iio.h" | |
19 | ||
20 | static const struct regmap_config inv_mpu_regmap_config = { | |
21 | .reg_bits = 8, | |
22 | .val_bits = 8, | |
23 | }; | |
24 | ||
25 | static int inv_mpu_i2c_disable(struct iio_dev *indio_dev) | |
26 | { | |
27 | struct inv_mpu6050_state *st = iio_priv(indio_dev); | |
28 | int ret = 0; | |
29 | ||
30 | ret = inv_mpu6050_set_power_itg(st, true); | |
31 | if (ret) | |
32 | return ret; | |
33 | ||
34 | ret = regmap_write(st->map, INV_MPU6050_REG_USER_CTRL, | |
35 | INV_MPU6050_BIT_I2C_IF_DIS); | |
36 | if (ret) { | |
37 | inv_mpu6050_set_power_itg(st, false); | |
38 | return ret; | |
39 | } | |
40 | ||
41 | return inv_mpu6050_set_power_itg(st, false); | |
42 | } | |
43 | ||
44 | static int inv_mpu_probe(struct spi_device *spi) | |
45 | { | |
46 | struct regmap *regmap; | |
47 | const struct spi_device_id *id = spi_get_device_id(spi); | |
48 | const char *name = id ? id->name : NULL; | |
49 | ||
50 | regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config); | |
51 | if (IS_ERR(regmap)) { | |
52 | dev_err(&spi->dev, "Failed to register spi regmap %d\n", | |
53 | (int)PTR_ERR(regmap)); | |
54 | return PTR_ERR(regmap); | |
55 | } | |
56 | ||
57 | return inv_mpu_core_probe(regmap, spi->irq, name, inv_mpu_i2c_disable); | |
58 | } | |
59 | ||
60 | static int inv_mpu_remove(struct spi_device *spi) | |
61 | { | |
62 | return inv_mpu_core_remove(&spi->dev); | |
63 | } | |
64 | ||
65 | /* | |
66 | * device id table is used to identify what device can be | |
67 | * supported by this driver | |
68 | */ | |
69 | static const struct spi_device_id inv_mpu_id[] = { | |
70 | {"mpu6000", INV_MPU6000}, | |
71 | {} | |
72 | }; | |
73 | ||
74 | MODULE_DEVICE_TABLE(spi, inv_mpu_id); | |
75 | ||
76 | static const struct acpi_device_id inv_acpi_match[] = { | |
77 | {"INVN6000", 0}, | |
78 | { }, | |
79 | }; | |
80 | MODULE_DEVICE_TABLE(acpi, inv_acpi_match); | |
81 | ||
82 | static struct spi_driver inv_mpu_driver = { | |
83 | .probe = inv_mpu_probe, | |
84 | .remove = inv_mpu_remove, | |
85 | .id_table = inv_mpu_id, | |
86 | .driver = { | |
87 | .acpi_match_table = ACPI_PTR(inv_acpi_match), | |
88 | .name = "inv-mpu6000-spi", | |
89 | .pm = &inv_mpu_pmops, | |
90 | }, | |
91 | }; | |
92 | ||
93 | module_spi_driver(inv_mpu_driver); | |
94 | ||
95 | MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>"); | |
96 | MODULE_DESCRIPTION("Invensense device MPU6000 driver"); | |
97 | MODULE_LICENSE("GPL"); |