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/slab.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 }; 56 MODULE_DEVICE_TABLE(of, st_press_of_match); 57 58 static int st_press_spi_probe(struct spi_device *spi) 59 { 60 const struct st_sensor_settings *settings; 61 struct st_sensor_data *press_data; 62 struct iio_dev *indio_dev; 63 int err; 64 65 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias)); 66 67 settings = st_press_get_settings(spi->modalias); 68 if (!settings) { 69 dev_err(&spi->dev, "device name %s not recognized.\n", 70 spi->modalias); 71 return -ENODEV; 72 } 73 74 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data)); 75 if (!indio_dev) 76 return -ENOMEM; 77 78 press_data = iio_priv(indio_dev); 79 press_data->sensor_settings = (struct st_sensor_settings *)settings; 80 81 err = st_sensors_spi_configure(indio_dev, spi); 82 if (err < 0) 83 return err; 84 85 err = st_press_common_probe(indio_dev); 86 if (err < 0) 87 return err; 88 89 return 0; 90 } 91 92 static int st_press_spi_remove(struct spi_device *spi) 93 { 94 st_press_common_remove(spi_get_drvdata(spi)); 95 96 return 0; 97 } 98 99 static const struct spi_device_id st_press_id_table[] = { 100 { LPS001WP_PRESS_DEV_NAME }, 101 { LPS25H_PRESS_DEV_NAME }, 102 { LPS331AP_PRESS_DEV_NAME }, 103 { LPS22HB_PRESS_DEV_NAME }, 104 { LPS33HW_PRESS_DEV_NAME }, 105 { LPS35HW_PRESS_DEV_NAME }, 106 { LPS22HH_PRESS_DEV_NAME }, 107 {}, 108 }; 109 MODULE_DEVICE_TABLE(spi, st_press_id_table); 110 111 static struct spi_driver st_press_driver = { 112 .driver = { 113 .name = "st-press-spi", 114 .of_match_table = st_press_of_match, 115 }, 116 .probe = st_press_spi_probe, 117 .remove = st_press_spi_remove, 118 .id_table = st_press_id_table, 119 }; 120 module_spi_driver(st_press_driver); 121 122 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 123 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver"); 124 MODULE_LICENSE("GPL v2"); 125