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 | |
23 | static int hsc_spi_recv(struct hsc_data *data) |
24 | { |
25 | struct spi_device *spi = to_spi_device(dev: 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, xfers: &xfer, num_xfers: 1); |
34 | } |
35 | |
36 | static int hsc_spi_probe(struct spi_device *spi) |
37 | { |
38 | return hsc_common_probe(dev: &spi->dev, recv: hsc_spi_recv); |
39 | } |
40 | |
41 | static const struct of_device_id hsc_spi_match[] = { |
42 | { .compatible = "honeywell,hsc030pa" }, |
43 | {} |
44 | }; |
45 | MODULE_DEVICE_TABLE(of, hsc_spi_match); |
46 | |
47 | static const struct spi_device_id hsc_spi_id[] = { |
48 | { "hsc030pa" }, |
49 | {} |
50 | }; |
51 | MODULE_DEVICE_TABLE(spi, hsc_spi_id); |
52 | |
53 | static 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 | }; |
61 | module_spi_driver(hsc_spi_driver); |
62 | |
63 | MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>" ); |
64 | MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor spi driver" ); |
65 | MODULE_LICENSE("GPL" ); |
66 | MODULE_IMPORT_NS(IIO_HONEYWELL_HSC030PA); |
67 | |