1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics pressures driver 4 * 5 * Copyright 2013 STMicroelectronics Inc. 6 * 7 * Denis Ciocca <denis.ciocca@st.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/mod_devicetable.h> 13 #include <linux/spi/spi.h> 14 #include <linux/iio/iio.h> 15 16 #include <linux/iio/common/st_sensors.h> 17 #include <linux/iio/common/st_sensors_spi.h> 18 #include "st_pressure.h" 19 20 /* 21 * For new single-chip sensors use <device_name> as compatible string. 22 * For old single-chip devices keep <device_name>-press to maintain 23 * compatibility 24 */ 25 static const struct of_device_id st_press_of_match[] = { 26 { 27 .compatible = "st,lps001wp-press", 28 .data = LPS001WP_PRESS_DEV_NAME, 29 }, 30 { 31 .compatible = "st,lps25h-press", 32 .data = LPS25H_PRESS_DEV_NAME, 33 }, 34 { 35 .compatible = "st,lps331ap-press", 36 .data = LPS331AP_PRESS_DEV_NAME, 37 }, 38 { 39 .compatible = "st,lps22hb-press", 40 .data = LPS22HB_PRESS_DEV_NAME, 41 }, 42 { 43 .compatible = "st,lps33hw", 44 .data = LPS33HW_PRESS_DEV_NAME, 45 }, 46 { 47 .compatible = "st,lps35hw", 48 .data = LPS35HW_PRESS_DEV_NAME, 49 }, 50 { 51 .compatible = "st,lps22hh", 52 .data = LPS22HH_PRESS_DEV_NAME, 53 }, 54 { 55 .compatible = "st,lps22df", 56 .data = LPS22DF_PRESS_DEV_NAME, 57 }, 58 {}, 59 }; 60 MODULE_DEVICE_TABLE(of, st_press_of_match); 61 62 static int st_press_spi_probe(struct spi_device *spi) 63 { 64 const struct st_sensor_settings *settings; 65 struct st_sensor_data *press_data; 66 struct iio_dev *indio_dev; 67 int err; 68 69 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias)); 70 71 settings = st_press_get_settings(spi->modalias); 72 if (!settings) { 73 dev_err(&spi->dev, "device name %s not recognized.\n", 74 spi->modalias); 75 return -ENODEV; 76 } 77 78 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data)); 79 if (!indio_dev) 80 return -ENOMEM; 81 82 press_data = iio_priv(indio_dev); 83 press_data->sensor_settings = (struct st_sensor_settings *)settings; 84 85 err = st_sensors_spi_configure(indio_dev, spi); 86 if (err < 0) 87 return err; 88 89 err = st_sensors_power_enable(indio_dev); 90 if (err) 91 return err; 92 93 return st_press_common_probe(indio_dev); 94 } 95 96 static const struct spi_device_id st_press_id_table[] = { 97 { LPS001WP_PRESS_DEV_NAME }, 98 { LPS25H_PRESS_DEV_NAME }, 99 { LPS331AP_PRESS_DEV_NAME }, 100 { LPS22HB_PRESS_DEV_NAME }, 101 { LPS33HW_PRESS_DEV_NAME }, 102 { LPS35HW_PRESS_DEV_NAME }, 103 { LPS22HH_PRESS_DEV_NAME }, 104 { LPS22DF_PRESS_DEV_NAME }, 105 { "lps001wp-press" }, 106 { "lps25h-press", }, 107 { "lps331ap-press" }, 108 { "lps22hb-press" }, 109 {}, 110 }; 111 MODULE_DEVICE_TABLE(spi, st_press_id_table); 112 113 static struct spi_driver st_press_driver = { 114 .driver = { 115 .name = "st-press-spi", 116 .of_match_table = st_press_of_match, 117 }, 118 .probe = st_press_spi_probe, 119 .id_table = st_press_id_table, 120 }; 121 module_spi_driver(st_press_driver); 122 123 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 124 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver"); 125 MODULE_LICENSE("GPL v2"); 126 MODULE_IMPORT_NS(IIO_ST_SENSORS); 127