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(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 36 static int hsc_spi_probe(struct spi_device *spi) 37 { 38 return hsc_common_probe(&spi->dev, 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