drivers/iio/pressure/hsc030pa_i2c.c

   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);