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/common/documents/sps-siot-spi-comms-digital-ouptu-pressure-sensors-tn-008202-3-en-ciid-45843.pdf
8 * 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
9 */
10
11#include <linux/delay.h>
12#include <linux/device.h>
13#include <linux/mod_devicetable.h>
14#include <linux/module.h>
15#include <linux/spi/spi.h>
16#include <linux/stddef.h>
17#include <linux/types.h>
18
19#include <linux/iio/iio.h>
20
21#include "hsc030pa.h"
22
23static int hsc_spi_recv(struct hsc_data *data)
24{
25	struct spi_device *spi = to_spi_device(data->dev);
26	struct spi_transfer xfer = {
27		.tx_buf = NULL,
28		.rx_buf = data->buffer,
29		.len = HSC_REG_MEASUREMENT_RD_SIZE,
30	};
31
32	msleep_interruptible(HSC_RESP_TIME_MS);
33	return spi_sync_transfer(spi, &xfer, 1);
34}
35
36static int hsc_spi_probe(struct spi_device *spi)
37{
38	return hsc_common_probe(&spi->dev, hsc_spi_recv);
39}
40
41static const struct of_device_id hsc_spi_match[] = {
42	{ .compatible = "honeywell,hsc030pa" },
43	{}
44};
45MODULE_DEVICE_TABLE(of, hsc_spi_match);
46
47static const struct spi_device_id hsc_spi_id[] = {
48	{ "hsc030pa" },
49	{}
50};
51MODULE_DEVICE_TABLE(spi, hsc_spi_id);
52
53static struct spi_driver hsc_spi_driver = {
54	.driver = {
55		.name = "hsc030pa",
56		.of_match_table = hsc_spi_match,
57	},
58	.probe = hsc_spi_probe,
59	.id_table = hsc_spi_id,
60};
61module_spi_driver(hsc_spi_driver);
62
63MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>");
64MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor spi driver");
65MODULE_LICENSE("GPL");
66MODULE_IMPORT_NS(IIO_HONEYWELL_HSC030PA);
67