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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Honeywell TruStability HSC Series pressure/temperature sensor4 *5 * Copyright (c) 2023 Petre Rodan <petre.rodan@subdimension.ro>6 *7 * 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.pdf8 * 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.pdf9 */10 11#include <linux/delay.h>12#include <linux/device.h>13#include <linux/errno.h>14#include <linux/i2c.h>15#include <linux/mod_devicetable.h>16#include <linux/module.h>17#include <linux/types.h>18 19#include <linux/iio/iio.h>20 21#include "hsc030pa.h"22 23static int hsc_i2c_recv(struct hsc_data *data)24{25 struct i2c_client *client = to_i2c_client(data->dev);26 struct i2c_msg msg;27 int ret;28 29 msleep_interruptible(HSC_RESP_TIME_MS);30 31 msg.addr = client->addr;32 msg.flags = client->flags | I2C_M_RD;33 msg.len = HSC_REG_MEASUREMENT_RD_SIZE;34 msg.buf = data->buffer;35 36 ret = i2c_transfer(client->adapter, &msg, 1);37 38 return (ret == 2) ? 0 : ret;39}40 41static int hsc_i2c_probe(struct i2c_client *client)42{43 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))44 return -EOPNOTSUPP;45 46 return hsc_common_probe(&client->dev, hsc_i2c_recv);47}48 49static const struct of_device_id hsc_i2c_match[] = {50 { .compatible = "honeywell,hsc030pa" },51 {}52};53MODULE_DEVICE_TABLE(of, hsc_i2c_match);54 55static const struct i2c_device_id hsc_i2c_id[] = {56 { "hsc030pa" },57 {}58};59MODULE_DEVICE_TABLE(i2c, hsc_i2c_id);60 61static struct i2c_driver hsc_i2c_driver = {62 .driver = {63 .name = "hsc030pa",64 .of_match_table = hsc_i2c_match,65 },66 .probe = hsc_i2c_probe,67 .id_table = hsc_i2c_id,68};69module_i2c_driver(hsc_i2c_driver);70 71MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>");72MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor i2c driver");73MODULE_LICENSE("GPL");74MODULE_IMPORT_NS(IIO_HONEYWELL_HSC030PA);75