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143 lines
3.7 KiB
143 lines
3.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips: |
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* - BMC150 |
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* - BMI055 |
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* - BMA255 |
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* - BMA250E |
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* - BMA222 |
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* - BMA222E |
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* - BMA280 |
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* |
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* Copyright (c) 2014, Intel Corporation. |
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*/ |
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#include <linux/device.h> |
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#include <linux/mod_devicetable.h> |
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#include <linux/i2c.h> |
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#include <linux/module.h> |
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#include <linux/acpi.h> |
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#include <linux/regmap.h> |
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#include "bmc150-accel.h" |
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static int bmc150_accel_probe(struct i2c_client *client, |
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const struct i2c_device_id *id) |
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{ |
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struct regmap *regmap; |
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const char *name = NULL; |
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bool block_supported = |
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i2c_check_functionality(client->adapter, I2C_FUNC_I2C) || |
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i2c_check_functionality(client->adapter, |
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I2C_FUNC_SMBUS_READ_I2C_BLOCK); |
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struct acpi_device __maybe_unused *adev; |
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int ret; |
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regmap = devm_regmap_init_i2c(client, &bmc150_regmap_conf); |
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if (IS_ERR(regmap)) { |
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dev_err(&client->dev, "Failed to initialize i2c regmap\n"); |
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return PTR_ERR(regmap); |
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} |
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if (id) |
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name = id->name; |
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ret = bmc150_accel_core_probe(&client->dev, regmap, client->irq, name, block_supported); |
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if (ret) |
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return ret; |
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/* |
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* Some BOSC0200 acpi_devices describe 2 accelerometers in a single ACPI |
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* device, try instantiating a second i2c_client for an I2cSerialBusV2 |
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* ACPI resource with index 1. The !id check avoids recursion when |
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* bmc150_accel_probe() gets called for the second client. |
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*/ |
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#ifdef CONFIG_ACPI |
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adev = ACPI_COMPANION(&client->dev); |
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if (!id && adev && strcmp(acpi_device_hid(adev), "BOSC0200") == 0) { |
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struct i2c_board_info board_info = { |
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.type = "bmc150_accel", |
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/* |
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* The 2nd accel sits in the base of 2-in-1s. Note this |
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* name is static, as there should never be more then 1 |
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* BOSC0200 ACPI node with 2 accelerometers in it. |
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*/ |
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.dev_name = "BOSC0200:base", |
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.fwnode = client->dev.fwnode, |
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.irq = -ENOENT, |
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}; |
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struct i2c_client *second_dev; |
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second_dev = i2c_acpi_new_device(&client->dev, 1, &board_info); |
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if (!IS_ERR(second_dev)) |
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bmc150_set_second_device(second_dev); |
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} |
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#endif |
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return 0; |
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} |
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static int bmc150_accel_remove(struct i2c_client *client) |
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{ |
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struct i2c_client *second_dev = bmc150_get_second_device(client); |
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i2c_unregister_device(second_dev); |
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return bmc150_accel_core_remove(&client->dev); |
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} |
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static const struct acpi_device_id bmc150_accel_acpi_match[] = { |
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{"BSBA0150", bmc150}, |
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{"BMC150A", bmc150}, |
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{"BMI055A", bmi055}, |
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{"BMA0255", bma255}, |
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{"BMA250E", bma250e}, |
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{"BMA222", bma222}, |
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{"BMA222E", bma222e}, |
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{"BMA0280", bma280}, |
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{"BOSC0200"}, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match); |
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static const struct i2c_device_id bmc150_accel_id[] = { |
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{"bmc150_accel", bmc150}, |
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{"bmi055_accel", bmi055}, |
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{"bma255", bma255}, |
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{"bma250e", bma250e}, |
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{"bma222", bma222}, |
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{"bma222e", bma222e}, |
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{"bma280", bma280}, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(i2c, bmc150_accel_id); |
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static const struct of_device_id bmc150_accel_of_match[] = { |
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{ .compatible = "bosch,bmc150_accel" }, |
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{ .compatible = "bosch,bmi055_accel" }, |
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{ .compatible = "bosch,bma255" }, |
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{ .compatible = "bosch,bma250e" }, |
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{ .compatible = "bosch,bma222" }, |
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{ .compatible = "bosch,bma222e" }, |
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{ .compatible = "bosch,bma280" }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(of, bmc150_accel_of_match); |
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static struct i2c_driver bmc150_accel_driver = { |
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.driver = { |
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.name = "bmc150_accel_i2c", |
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.of_match_table = bmc150_accel_of_match, |
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.acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match), |
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.pm = &bmc150_accel_pm_ops, |
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}, |
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.probe = bmc150_accel_probe, |
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.remove = bmc150_accel_remove, |
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.id_table = bmc150_accel_id, |
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}; |
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module_i2c_driver(bmc150_accel_driver); |
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MODULE_AUTHOR("Srinivas Pandruvada <[email protected]>"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");
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