These changes are the raw update to linux-4.4.6-rt14. Kernel sources
[kvmfornfv.git] / kernel / drivers / iio / accel / bmc150-accel-spi.c
1 /*
2  * 3-axis accelerometer driver supporting SPI Bosch-Sensortec accelerometer chip
3  * Copyright © 2015 Pengutronix, Markus Pargmann <mpa@pengutronix.de>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
17  */
18
19 #include <linux/device.h>
20 #include <linux/mod_devicetable.h>
21 #include <linux/module.h>
22 #include <linux/acpi.h>
23 #include <linux/regmap.h>
24 #include <linux/spi/spi.h>
25
26 #include "bmc150-accel.h"
27
28 static const struct regmap_config bmc150_spi_regmap_conf = {
29         .reg_bits = 8,
30         .val_bits = 8,
31         .max_register = 0x3f,
32 };
33
34 static int bmc150_accel_probe(struct spi_device *spi)
35 {
36         struct regmap *regmap;
37         const struct spi_device_id *id = spi_get_device_id(spi);
38
39         regmap = devm_regmap_init_spi(spi, &bmc150_spi_regmap_conf);
40         if (IS_ERR(regmap)) {
41                 dev_err(&spi->dev, "Failed to initialize spi regmap\n");
42                 return PTR_ERR(regmap);
43         }
44
45         return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, id->name,
46                                        true);
47 }
48
49 static int bmc150_accel_remove(struct spi_device *spi)
50 {
51         return bmc150_accel_core_remove(&spi->dev);
52 }
53
54 static const struct acpi_device_id bmc150_accel_acpi_match[] = {
55         {"BSBA0150",    bmc150},
56         {"BMC150A",     bmc150},
57         {"BMI055A",     bmi055},
58         {"BMA0255",     bma255},
59         {"BMA250E",     bma250e},
60         {"BMA222E",     bma222e},
61         {"BMA0280",     bma280},
62         { },
63 };
64 MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
65
66 static const struct spi_device_id bmc150_accel_id[] = {
67         {"bmc150_accel",        bmc150},
68         {"bmi055_accel",        bmi055},
69         {"bma255",              bma255},
70         {"bma250e",             bma250e},
71         {"bma222e",             bma222e},
72         {"bma280",              bma280},
73         {}
74 };
75 MODULE_DEVICE_TABLE(spi, bmc150_accel_id);
76
77 static struct spi_driver bmc150_accel_driver = {
78         .driver = {
79                 .name   = "bmc150_accel_spi",
80                 .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match),
81                 .pm     = &bmc150_accel_pm_ops,
82         },
83         .probe          = bmc150_accel_probe,
84         .remove         = bmc150_accel_remove,
85         .id_table       = bmc150_accel_id,
86 };
87 module_spi_driver(bmc150_accel_driver);
88
89 MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>");
90 MODULE_LICENSE("GPL v2");
91 MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");