]> git.kernelconcepts.de Git - karo-tx-linux.git/blob - drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block
[karo-tx-linux.git] / drivers / iio / imu / inv_mpu6050 / inv_mpu_spi.c
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 *spi_id;
48         const struct acpi_device_id *acpi_id;
49         const char *name = NULL;
50         enum inv_devices chip_type;
51
52         if ((spi_id = spi_get_device_id(spi))) {
53                 chip_type = (enum inv_devices)spi_id->driver_data;
54                 name = spi_id->name;
55         } else if ((acpi_id = acpi_match_device(spi->dev.driver->acpi_match_table, &spi->dev))) {
56                 chip_type = (enum inv_devices)acpi_id->driver_data;
57         } else {
58                 return -ENODEV;
59         }
60
61         regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config);
62         if (IS_ERR(regmap)) {
63                 dev_err(&spi->dev, "Failed to register spi regmap %d\n",
64                         (int)PTR_ERR(regmap));
65                 return PTR_ERR(regmap);
66         }
67
68         return inv_mpu_core_probe(regmap, spi->irq, name,
69                                   inv_mpu_i2c_disable, chip_type);
70 }
71
72 static int inv_mpu_remove(struct spi_device *spi)
73 {
74         return inv_mpu_core_remove(&spi->dev);
75 }
76
77 /*
78  * device id table is used to identify what device can be
79  * supported by this driver
80  */
81 static const struct spi_device_id inv_mpu_id[] = {
82         {"mpu6000", INV_MPU6000},
83         {"mpu6500", INV_MPU6500},
84         {"mpu9150", INV_MPU9150},
85         {"icm20608", INV_ICM20608},
86         {}
87 };
88
89 MODULE_DEVICE_TABLE(spi, inv_mpu_id);
90
91 static const struct acpi_device_id inv_acpi_match[] = {
92         {"INVN6000", INV_MPU6000},
93         { },
94 };
95 MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
96
97 static struct spi_driver inv_mpu_driver = {
98         .probe          =       inv_mpu_probe,
99         .remove         =       inv_mpu_remove,
100         .id_table       =       inv_mpu_id,
101         .driver = {
102                 .acpi_match_table = ACPI_PTR(inv_acpi_match),
103                 .name   =       "inv-mpu6000-spi",
104                 .pm     =       &inv_mpu_pmops,
105         },
106 };
107
108 module_spi_driver(inv_mpu_driver);
109
110 MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>");
111 MODULE_DESCRIPTION("Invensense device MPU6000 driver");
112 MODULE_LICENSE("GPL");