1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Honeywell ABP2 series pressure sensor driver 4 * 5 * Copyright (c) 2025 Petre Rodan <petre.rodan@subdimension.ro> 6 */ 7 8 #include <linux/errno.h> 9 #include <linux/mod_devicetable.h> 10 #include <linux/module.h> 11 #include <linux/spi/spi.h> 12 #include <linux/types.h> 13 14 #include "abp2030pa.h" 15 16 static int abp2_spi_xfer(struct abp2_data *data, u8 cmd, u8 nbytes) 17 { 18 struct spi_device *spi = to_spi_device(data->dev); 19 struct spi_transfer xfer = { }; 20 21 if (nbytes > ABP2_MEASUREMENT_RD_SIZE) 22 return -EOVERFLOW; 23 24 data->tx_buf[0] = cmd; 25 xfer.tx_buf = data->tx_buf; 26 xfer.rx_buf = data->rx_buf; 27 xfer.len = nbytes; 28 29 return spi_sync_transfer(spi, &xfer, 1); 30 } 31 32 static const struct abp2_ops abp2_spi_ops = { 33 .read = abp2_spi_xfer, 34 .write = abp2_spi_xfer, 35 }; 36 37 static int abp2_spi_probe(struct spi_device *spi) 38 { 39 return abp2_common_probe(&spi->dev, &abp2_spi_ops, spi->irq); 40 } 41 42 static const struct of_device_id abp2_spi_match[] = { 43 { .compatible = "honeywell,abp2030pa" }, 44 { } 45 }; 46 MODULE_DEVICE_TABLE(of, abp2_spi_match); 47 48 static const struct spi_device_id abp2_spi_id[] = { 49 { "abp2030pa" }, 50 { } 51 }; 52 MODULE_DEVICE_TABLE(spi, abp2_spi_id); 53 54 static struct spi_driver abp2_spi_driver = { 55 .driver = { 56 .name = "abp2030pa", 57 .of_match_table = abp2_spi_match, 58 }, 59 .probe = abp2_spi_probe, 60 .id_table = abp2_spi_id, 61 }; 62 module_spi_driver(abp2_spi_driver); 63 64 MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>"); 65 MODULE_DESCRIPTION("Honeywell ABP2 pressure sensor spi driver"); 66 MODULE_LICENSE("GPL"); 67 MODULE_IMPORT_NS("IIO_HONEYWELL_ABP2030PA"); 68