1 /* 2 * STMicroelectronics st_lsm6dsx spi driver 3 * 4 * Copyright 2016 STMicroelectronics Inc. 5 * 6 * Lorenzo Bianconi <lorenzo.bianconi@st.com> 7 * Denis Ciocca <denis.ciocca@st.com> 8 * 9 * Licensed under the GPL-2. 10 */ 11 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 #include <linux/spi/spi.h> 15 #include <linux/slab.h> 16 #include <linux/of.h> 17 #include <linux/regmap.h> 18 19 #include "st_lsm6dsx.h" 20 21 static const struct regmap_config st_lsm6dsx_spi_regmap_config = { 22 .reg_bits = 8, 23 .val_bits = 8, 24 }; 25 26 static int st_lsm6dsx_spi_probe(struct spi_device *spi) 27 { 28 const struct spi_device_id *id = spi_get_device_id(spi); 29 int hw_id = id->driver_data; 30 struct regmap *regmap; 31 32 regmap = devm_regmap_init_spi(spi, &st_lsm6dsx_spi_regmap_config); 33 if (IS_ERR(regmap)) { 34 dev_err(&spi->dev, "Failed to register spi regmap %d\n", 35 (int)PTR_ERR(regmap)); 36 return PTR_ERR(regmap); 37 } 38 39 return st_lsm6dsx_probe(&spi->dev, spi->irq, 40 hw_id, id->name, regmap); 41 } 42 43 static const struct of_device_id st_lsm6dsx_spi_of_match[] = { 44 { 45 .compatible = "st,lsm6ds3", 46 .data = (void *)ST_LSM6DS3_ID, 47 }, 48 { 49 .compatible = "st,lsm6ds3h", 50 .data = (void *)ST_LSM6DS3H_ID, 51 }, 52 { 53 .compatible = "st,lsm6dsl", 54 .data = (void *)ST_LSM6DSL_ID, 55 }, 56 { 57 .compatible = "st,lsm6dsm", 58 .data = (void *)ST_LSM6DSM_ID, 59 }, 60 {}, 61 }; 62 MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match); 63 64 static const struct spi_device_id st_lsm6dsx_spi_id_table[] = { 65 { ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID }, 66 { ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID }, 67 { ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID }, 68 { ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID }, 69 {}, 70 }; 71 MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table); 72 73 static struct spi_driver st_lsm6dsx_driver = { 74 .driver = { 75 .name = "st_lsm6dsx_spi", 76 .pm = &st_lsm6dsx_pm_ops, 77 .of_match_table = of_match_ptr(st_lsm6dsx_spi_of_match), 78 }, 79 .probe = st_lsm6dsx_spi_probe, 80 .id_table = st_lsm6dsx_spi_id_table, 81 }; 82 module_spi_driver(st_lsm6dsx_driver); 83 84 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>"); 85 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 86 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx spi driver"); 87 MODULE_LICENSE("GPL v2"); 88