// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2011 Bosch Sensortec GmbH * Copyright (c) 2011 Unixphere * * This driver adds support for Bosch Sensortec's digital acceleration * sensors BMA150 and SMB380. * The SMB380 is fully compatible with BMA150 and only differs in packaging. * * The datasheet for the BMA150 chip can be found here: * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMA150-DS000-07.pdf */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/i2c.h> #include <linux/input.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/bma150.h> #define ABSMAX_ACC_VAL … #define ABSMIN_ACC_VAL … /* Each axis is represented by a 2-byte data word */ #define BMA150_XYZ_DATA_SIZE … /* Input poll interval in milliseconds */ #define BMA150_POLL_INTERVAL … #define BMA150_POLL_MAX … #define BMA150_POLL_MIN … #define BMA150_MODE_NORMAL … #define BMA150_MODE_SLEEP … #define BMA150_MODE_WAKE_UP … /* Data register addresses */ #define BMA150_DATA_0_REG … #define BMA150_DATA_1_REG … #define BMA150_DATA_2_REG … /* Control register addresses */ #define BMA150_CTRL_0_REG … #define BMA150_CTRL_1_REG … #define BMA150_CTRL_2_REG … #define BMA150_CTRL_3_REG … /* Configuration/Setting register addresses */ #define BMA150_CFG_0_REG … #define BMA150_CFG_1_REG … #define BMA150_CFG_2_REG … #define BMA150_CFG_3_REG … #define BMA150_CFG_4_REG … #define BMA150_CFG_5_REG … #define BMA150_CHIP_ID … #define BMA150_CHIP_ID_REG … #define BMA150_ACC_X_LSB_REG … #define BMA150_SLEEP_POS … #define BMA150_SLEEP_MSK … #define BMA150_SLEEP_REG … #define BMA150_BANDWIDTH_POS … #define BMA150_BANDWIDTH_MSK … #define BMA150_BANDWIDTH_REG … #define BMA150_RANGE_POS … #define BMA150_RANGE_MSK … #define BMA150_RANGE_REG … #define BMA150_WAKE_UP_POS … #define BMA150_WAKE_UP_MSK … #define BMA150_WAKE_UP_REG … #define BMA150_SW_RES_POS … #define BMA150_SW_RES_MSK … #define BMA150_SW_RES_REG … /* Any-motion interrupt register fields */ #define BMA150_ANY_MOTION_EN_POS … #define BMA150_ANY_MOTION_EN_MSK … #define BMA150_ANY_MOTION_EN_REG … #define BMA150_ANY_MOTION_DUR_POS … #define BMA150_ANY_MOTION_DUR_MSK … #define BMA150_ANY_MOTION_DUR_REG … #define BMA150_ANY_MOTION_THRES_REG … /* Advanced interrupt register fields */ #define BMA150_ADV_INT_EN_POS … #define BMA150_ADV_INT_EN_MSK … #define BMA150_ADV_INT_EN_REG … /* High-G interrupt register fields */ #define BMA150_HIGH_G_EN_POS … #define BMA150_HIGH_G_EN_MSK … #define BMA150_HIGH_G_EN_REG … #define BMA150_HIGH_G_HYST_POS … #define BMA150_HIGH_G_HYST_MSK … #define BMA150_HIGH_G_HYST_REG … #define BMA150_HIGH_G_DUR_REG … #define BMA150_HIGH_G_THRES_REG … /* Low-G interrupt register fields */ #define BMA150_LOW_G_EN_POS … #define BMA150_LOW_G_EN_MSK … #define BMA150_LOW_G_EN_REG … #define BMA150_LOW_G_HYST_POS … #define BMA150_LOW_G_HYST_MSK … #define BMA150_LOW_G_HYST_REG … #define BMA150_LOW_G_DUR_REG … #define BMA150_LOW_G_THRES_REG … struct bma150_data { … }; /* * The settings for the given range, bandwidth and interrupt features * are stated and verified by Bosch Sensortec where they are configured * to provide a generic sensitivity performance. */ static const struct bma150_cfg default_cfg = …; static int bma150_write_byte(struct i2c_client *client, u8 reg, u8 val) { … } static int bma150_set_reg_bits(struct i2c_client *client, int val, int shift, u8 mask, u8 reg) { … } static int bma150_set_mode(struct bma150_data *bma150, u8 mode) { … } static int bma150_soft_reset(struct bma150_data *bma150) { … } static int bma150_set_range(struct bma150_data *bma150, u8 range) { … } static int bma150_set_bandwidth(struct bma150_data *bma150, u8 bw) { … } static int bma150_set_low_g_interrupt(struct bma150_data *bma150, u8 enable, u8 hyst, u8 dur, u8 thres) { … } static int bma150_set_high_g_interrupt(struct bma150_data *bma150, u8 enable, u8 hyst, u8 dur, u8 thres) { … } static int bma150_set_any_motion_interrupt(struct bma150_data *bma150, u8 enable, u8 dur, u8 thres) { … } static void bma150_report_xyz(struct bma150_data *bma150) { … } static irqreturn_t bma150_irq_thread(int irq, void *dev) { … } static void bma150_poll(struct input_dev *input) { … } static int bma150_open(struct input_dev *input) { … } static void bma150_close(struct input_dev *input) { … } static int bma150_initialize(struct bma150_data *bma150, const struct bma150_cfg *cfg) { … } static int bma150_probe(struct i2c_client *client) { … } static void bma150_remove(struct i2c_client *client) { … } static int __maybe_unused bma150_suspend(struct device *dev) { … } static int __maybe_unused bma150_resume(struct device *dev) { … } static UNIVERSAL_DEV_PM_OPS(bma150_pm, bma150_suspend, bma150_resume, NULL); static const struct i2c_device_id bma150_id[] = …; MODULE_DEVICE_TABLE(i2c, bma150_id); static struct i2c_driver bma150_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux