1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Honeywell TruStability HSC Series pressure/temperature sensor 4 * 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/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf [hsc] 8 * 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 [i2c related] 9 */ 10 11 #include <linux/errno.h> 12 #include <linux/i2c.h> 13 #include <linux/mod_devicetable.h> 14 #include <linux/module.h> 15 16 #include <linux/iio/iio.h> 17 18 #include "hsc030pa.h" 19 20 static int hsc_i2c_recv(struct hsc_data *data) 21 { 22 struct i2c_client *client = to_i2c_client(data->dev); 23 struct i2c_msg msg; 24 int ret; 25 26 msg.addr = client->addr; 27 msg.flags = client->flags | I2C_M_RD; 28 msg.len = HSC_REG_MEASUREMENT_RD_SIZE; 29 msg.buf = data->buffer; 30 31 ret = i2c_transfer(client->adapter, &msg, 1); 32 33 return (ret == 2) ? 0 : ret; 34 } 35 36 static int hsc_i2c_probe(struct i2c_client *client) 37 { 38 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) 39 return -EOPNOTSUPP; 40 41 return hsc_common_probe(&client->dev, hsc_i2c_recv); 42 } 43 44 static const struct of_device_id hsc_i2c_match[] = { 45 { .compatible = "honeywell,hsc030pa" }, 46 {} 47 }; 48 MODULE_DEVICE_TABLE(of, hsc_i2c_match); 49 50 static const struct i2c_device_id hsc_i2c_id[] = { 51 { "hsc030pa" }, 52 {} 53 }; 54 MODULE_DEVICE_TABLE(i2c, hsc_i2c_id); 55 56 static struct i2c_driver hsc_i2c_driver = { 57 .driver = { 58 .name = "hsc030pa", 59 .of_match_table = hsc_i2c_match, 60 }, 61 .probe = hsc_i2c_probe, 62 .id_table = hsc_i2c_id, 63 }; 64 module_i2c_driver(hsc_i2c_driver); 65 66 MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>"); 67 MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor i2c driver"); 68 MODULE_LICENSE("GPL"); 69 MODULE_IMPORT_NS(IIO_HONEYWELL_HSC030PA); 70