| Stefan Popa | 94dbb46 | 2018-09-04 17:12:32 +0300 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * ADXL372 3-Axis Digital Accelerometer I2C driver |
| 4 | * |
| 5 | * Copyright 2018 Analog Devices Inc. |
| 6 | */ |
| 7 | |
| 8 | #include <linux/i2c.h> |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/regmap.h> |
| 11 | |
| 12 | #include "adxl372.h" |
| 13 | |
| 14 | static const struct regmap_config adxl372_regmap_config = { |
| 15 | .reg_bits = 8, |
| 16 | .val_bits = 8, |
| 17 | .readable_noinc_reg = adxl372_readable_noinc_reg, |
| 18 | }; |
| 19 | |
| 20 | static int adxl372_i2c_probe(struct i2c_client *client, |
| 21 | const struct i2c_device_id *id) |
| 22 | { |
| 23 | struct regmap *regmap; |
| 24 | unsigned int regval; |
| 25 | int ret; |
| 26 | |
| 27 | regmap = devm_regmap_init_i2c(client, &adxl372_regmap_config); |
| 28 | if (IS_ERR(regmap)) |
| 29 | return PTR_ERR(regmap); |
| 30 | |
| 31 | ret = regmap_read(regmap, ADXL372_REVID, ®val); |
| 32 | if (ret < 0) |
| 33 | return ret; |
| 34 | |
| 35 | /* Starting with the 3rd revision an I2C chip bug was fixed */ |
| 36 | if (regval < 3) |
| 37 | dev_warn(&client->dev, |
| 38 | "I2C might not work properly with other devices on the bus"); |
| 39 | |
| 40 | return adxl372_probe(&client->dev, regmap, client->irq, id->name); |
| 41 | } |
| 42 | |
| 43 | static const struct i2c_device_id adxl372_i2c_id[] = { |
| 44 | { "adxl372", 0 }, |
| 45 | {} |
| 46 | }; |
| 47 | MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id); |
| 48 | |
| 49 | static struct i2c_driver adxl372_i2c_driver = { |
| 50 | .driver = { |
| 51 | .name = "adxl372_i2c", |
| 52 | }, |
| 53 | .probe = adxl372_i2c_probe, |
| 54 | .id_table = adxl372_i2c_id, |
| 55 | }; |
| 56 | |
| 57 | module_i2c_driver(adxl372_i2c_driver); |
| 58 | |
| 59 | MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>"); |
| 60 | MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer I2C driver"); |
| 61 | MODULE_LICENSE("GPL"); |
