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 }; 46 MODULE_DEVICE_TABLE(of, st_press_of_match); 47 #else 48 #define st_press_of_match NULL 49 #endif 50 51 static int st_press_spi_probe(struct spi_device *spi) 52 { 53 struct iio_dev *indio_dev; 54 struct st_sensor_data *press_data; 55 int err; 56 57 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data)); 58 if (indio_dev == NULL) 59 return -ENOMEM; 60 61 press_data = iio_priv(indio_dev); 62 63 st_sensors_of_name_probe(&spi->dev, st_press_of_match, 64 spi->modalias, sizeof(spi->modalias)); 65 st_sensors_spi_configure(indio_dev, spi, press_data); 66 67 err = st_press_common_probe(indio_dev); 68 if (err < 0) 69 return err; 70 71 return 0; 72 } 73 74 static int st_press_spi_remove(struct spi_device *spi) 75 { 76 st_press_common_remove(spi_get_drvdata(spi)); 77 78 return 0; 79 } 80 81 static const struct spi_device_id st_press_id_table[] = { 82 { LPS001WP_PRESS_DEV_NAME }, 83 { LPS25H_PRESS_DEV_NAME }, 84 { LPS331AP_PRESS_DEV_NAME }, 85 { LPS22HB_PRESS_DEV_NAME }, 86 {}, 87 }; 88 MODULE_DEVICE_TABLE(spi, st_press_id_table); 89 90 static struct spi_driver st_press_driver = { 91 .driver = { 92 .name = "st-press-spi", 93 .of_match_table = of_match_ptr(st_press_of_match), 94 }, 95 .probe = st_press_spi_probe, 96 .remove = st_press_spi_remove, 97 .id_table = st_press_id_table, 98 }; 99 module_spi_driver(st_press_driver); 100 101 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 102 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver"); 103 MODULE_LICENSE("GPL v2"); 104