// SPDX-License-Identifier: GPL-2.0-only /* * Honeywell TruStability HSC Series pressure/temperature sensor * * Copyright (c) 2023 Petre Rodan <petre.rodan@subdimension.ro> * * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/common/documents/sps-siot-i2c-comms-digital-output-pressure-sensors-tn-008201-3-en-ciid-45841.pdf * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/common/documents/sps-siot-sleep-mode-technical-note-008286-1-en-ciid-155793.pdf */ #include <linux/delay.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/i2c.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/types.h> #include <linux/iio/iio.h> #include "hsc030pa.h" static int hsc_i2c_recv(struct hsc_data *data) { struct i2c_client *client = to_i2c_client(data->dev); struct i2c_msg msg; int ret; msleep_interruptible(HSC_RESP_TIME_MS); msg.addr = client->addr; msg.flags = client->flags | I2C_M_RD; msg.len = HSC_REG_MEASUREMENT_RD_SIZE; msg.buf = data->buffer; ret = i2c_transfer(client->adapter, &msg, 1); return (ret == 2) ? 0 : ret; } static int hsc_i2c_probe(struct i2c_client *client) { if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) return -EOPNOTSUPP; return hsc_common_probe(&client->dev, hsc_i2c_recv); } static const struct of_device_id hsc_i2c_match[] = { { .compatible = "honeywell,hsc030pa" }, { } }; MODULE_DEVICE_TABLE(of, hsc_i2c_match); static const struct i2c_device_id hsc_i2c_id[] = { { "hsc030pa" }, { } }; MODULE_DEVICE_TABLE(i2c, hsc_i2c_id); static struct i2c_driver hsc_i2c_driver = { .driver = { .name = "hsc030pa", .of_match_table = hsc_i2c_match, }, .probe = hsc_i2c_probe, .id_table = hsc_i2c_id, }; module_i2c_driver(hsc_i2c_driver); MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>"); MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor i2c driver"); MODULE_LICENSE("GPL"); MODULE_IMPORT_NS("IIO_HONEYWELL_HSC030PA");