1 /*
2  * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips:
3  *  - BMC150
4  *  - BMI055
5  *  - BMA255
6  *  - BMA250E
7  *  - BMA222E
8  *  - BMA280
9  *
10  * Copyright (c) 2014, Intel Corporation.
11  *
12  * This program is free software; you can redistribute it and/or modify it
13  * under the terms and conditions of the GNU General Public License,
14  * version 2, as published by the Free Software Foundation.
15  *
16  * This program is distributed in the hope it will be useful, but WITHOUT
17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
19  * more details.
20  */
21 
22 #include <linux/device.h>
23 #include <linux/mod_devicetable.h>
24 #include <linux/i2c.h>
25 #include <linux/module.h>
26 #include <linux/acpi.h>
27 #include <linux/regmap.h>
28 
29 #include "bmc150-accel.h"
30 
31 static const struct regmap_config bmc150_i2c_regmap_conf = {
32 	.reg_bits = 8,
33 	.val_bits = 8,
34 };
35 
36 static int bmc150_accel_probe(struct i2c_client *client,
37 			      const struct i2c_device_id *id)
38 {
39 	struct regmap *regmap;
40 	const char *name = NULL;
41 	bool block_supported =
42 		i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
43 		i2c_check_functionality(client->adapter,
44 					I2C_FUNC_SMBUS_READ_I2C_BLOCK);
45 
46 	regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
47 	if (IS_ERR(regmap)) {
48 		dev_err(&client->dev, "Failed to initialize i2c regmap\n");
49 		return PTR_ERR(regmap);
50 	}
51 
52 	if (id)
53 		name = id->name;
54 
55 	return bmc150_accel_core_probe(&client->dev, regmap, client->irq, name,
56 				       block_supported);
57 }
58 
59 static int bmc150_accel_remove(struct i2c_client *client)
60 {
61 	return bmc150_accel_core_remove(&client->dev);
62 }
63 
64 static const struct acpi_device_id bmc150_accel_acpi_match[] = {
65 	{"BSBA0150",	bmc150},
66 	{"BMC150A",	bmc150},
67 	{"BMI055A",	bmi055},
68 	{"BMA0255",	bma255},
69 	{"BMA250E",	bma250e},
70 	{"BMA222E",	bma222e},
71 	{"BMA0280",	bma280},
72 	{ },
73 };
74 MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
75 
76 static const struct i2c_device_id bmc150_accel_id[] = {
77 	{"bmc150_accel",	bmc150},
78 	{"bmi055_accel",	bmi055},
79 	{"bma255",		bma255},
80 	{"bma250e",		bma250e},
81 	{"bma222e",		bma222e},
82 	{"bma280",		bma280},
83 	{}
84 };
85 
86 MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
87 
88 static struct i2c_driver bmc150_accel_driver = {
89 	.driver = {
90 		.name	= "bmc150_accel_i2c",
91 		.acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match),
92 		.pm	= &bmc150_accel_pm_ops,
93 	},
94 	.probe		= bmc150_accel_probe,
95 	.remove		= bmc150_accel_remove,
96 	.id_table	= bmc150_accel_id,
97 };
98 module_i2c_driver(bmc150_accel_driver);
99 
100 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
101 MODULE_LICENSE("GPL v2");
102 MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");
103