1 /* 2 * STMicroelectronics pressures driver 3 * 4 * Copyright 2013 STMicroelectronics Inc. 5 * 6 * Denis Ciocca <denis.ciocca@st.com> 7 * 8 * Licensed under the GPL-2. 9 */ 10 11 #include <linux/kernel.h> 12 #include <linux/module.h> 13 #include <linux/slab.h> 14 #include <linux/spi/spi.h> 15 #include <linux/iio/iio.h> 16 17 #include <linux/iio/common/st_sensors.h> 18 #include <linux/iio/common/st_sensors_spi.h> 19 #include "st_pressure.h" 20 21 #ifdef CONFIG_OF 22 /* 23 * For new single-chip sensors use <device_name> as compatible string. 24 * For old single-chip devices keep <device_name>-press to maintain 25 * compatibility 26 */ 27 static const struct of_device_id st_press_of_match[] = { 28 { 29 .compatible = "st,lps001wp-press", 30 .data = LPS001WP_PRESS_DEV_NAME, 31 }, 32 { 33 .compatible = "st,lps25h-press", 34 .data = LPS25H_PRESS_DEV_NAME, 35 }, 36 { 37 .compatible = "st,lps331ap-press", 38 .data = LPS331AP_PRESS_DEV_NAME, 39 }, 40 { 41 .compatible = "st,lps22hb-press", 42 .data = LPS22HB_PRESS_DEV_NAME, 43 }, 44 { 45 .compatible = "st,lps33hw", 46 .data = LPS33HW_PRESS_DEV_NAME, 47 }, 48 { 49 .compatible = "st,lps35hw", 50 .data = LPS35HW_PRESS_DEV_NAME, 51 }, 52 {}, 53 }; 54 MODULE_DEVICE_TABLE(of, st_press_of_match); 55 #else 56 #define st_press_of_match NULL 57 #endif 58 59 static int st_press_spi_probe(struct spi_device *spi) 60 { 61 struct iio_dev *indio_dev; 62 struct st_sensor_data *press_data; 63 int err; 64 65 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data)); 66 if (indio_dev == NULL) 67 return -ENOMEM; 68 69 press_data = iio_priv(indio_dev); 70 71 st_sensors_of_name_probe(&spi->dev, st_press_of_match, 72 spi->modalias, sizeof(spi->modalias)); 73 st_sensors_spi_configure(indio_dev, spi, press_data); 74 75 err = st_press_common_probe(indio_dev); 76 if (err < 0) 77 return err; 78 79 return 0; 80 } 81 82 static int st_press_spi_remove(struct spi_device *spi) 83 { 84 st_press_common_remove(spi_get_drvdata(spi)); 85 86 return 0; 87 } 88 89 static const struct spi_device_id st_press_id_table[] = { 90 { LPS001WP_PRESS_DEV_NAME }, 91 { LPS25H_PRESS_DEV_NAME }, 92 { LPS331AP_PRESS_DEV_NAME }, 93 { LPS22HB_PRESS_DEV_NAME }, 94 { LPS33HW_PRESS_DEV_NAME }, 95 { LPS35HW_PRESS_DEV_NAME }, 96 {}, 97 }; 98 MODULE_DEVICE_TABLE(spi, st_press_id_table); 99 100 static struct spi_driver st_press_driver = { 101 .driver = { 102 .name = "st-press-spi", 103 .of_match_table = of_match_ptr(st_press_of_match), 104 }, 105 .probe = st_press_spi_probe, 106 .remove = st_press_spi_remove, 107 .id_table = st_press_id_table, 108 }; 109 module_spi_driver(st_press_driver); 110 111 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 112 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver"); 113 MODULE_LICENSE("GPL v2"); 114