1fda8d26eSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2872e79adSDenis Ciocca /* 3872e79adSDenis Ciocca * STMicroelectronics magnetometers driver 4872e79adSDenis Ciocca * 5872e79adSDenis Ciocca * Copyright 2012-2013 STMicroelectronics Inc. 6872e79adSDenis Ciocca * 7872e79adSDenis Ciocca * Denis Ciocca <denis.ciocca@st.com> 8872e79adSDenis Ciocca */ 9872e79adSDenis Ciocca 10872e79adSDenis Ciocca #include <linux/kernel.h> 11872e79adSDenis Ciocca #include <linux/module.h> 12872e79adSDenis Ciocca #include <linux/slab.h> 13872e79adSDenis Ciocca #include <linux/spi/spi.h> 14872e79adSDenis Ciocca #include <linux/iio/iio.h> 15872e79adSDenis Ciocca 16872e79adSDenis Ciocca #include <linux/iio/common/st_sensors.h> 17872e79adSDenis Ciocca #include <linux/iio/common/st_sensors_spi.h> 18872e79adSDenis Ciocca #include "st_magn.h" 19872e79adSDenis Ciocca 2065a687a2SLorenzo Bianconi /* 2165a687a2SLorenzo Bianconi * For new single-chip sensors use <device_name> as compatible string. 2265a687a2SLorenzo Bianconi * For old single-chip devices keep <device_name>-magn to maintain 2365a687a2SLorenzo Bianconi * compatibility 2453759e25SMartin Kelly * For multi-chip devices, use <device_name>-magn to distinguish which 2553759e25SMartin Kelly * capability is being used 2665a687a2SLorenzo Bianconi */ 2765a687a2SLorenzo Bianconi static const struct of_device_id st_magn_of_match[] = { 2865a687a2SLorenzo Bianconi { 2965a687a2SLorenzo Bianconi .compatible = "st,lis3mdl-magn", 3065a687a2SLorenzo Bianconi .data = LIS3MDL_MAGN_DEV_NAME, 3165a687a2SLorenzo Bianconi }, 3265a687a2SLorenzo Bianconi { 3365a687a2SLorenzo Bianconi .compatible = "st,lsm303agr-magn", 3465a687a2SLorenzo Bianconi .data = LSM303AGR_MAGN_DEV_NAME, 3565a687a2SLorenzo Bianconi }, 36d0b7fea5SLorenzo Bianconi { 37d0b7fea5SLorenzo Bianconi .compatible = "st,lis2mdl", 38d0b7fea5SLorenzo Bianconi .data = LIS2MDL_MAGN_DEV_NAME, 39d0b7fea5SLorenzo Bianconi }, 400d92aa2cSMartin Kelly { 410d92aa2cSMartin Kelly .compatible = "st,lsm9ds1-magn", 420d92aa2cSMartin Kelly .data = LSM9DS1_MAGN_DEV_NAME, 430d92aa2cSMartin Kelly }, 4465a687a2SLorenzo Bianconi {} 4565a687a2SLorenzo Bianconi }; 4665a687a2SLorenzo Bianconi MODULE_DEVICE_TABLE(of, st_magn_of_match); 4765a687a2SLorenzo Bianconi 48872e79adSDenis Ciocca static int st_magn_spi_probe(struct spi_device *spi) 49872e79adSDenis Ciocca { 50291d83f2SDenis Ciocca const struct st_sensor_settings *settings; 51872e79adSDenis Ciocca struct st_sensor_data *mdata; 52291d83f2SDenis Ciocca struct iio_dev *indio_dev; 53872e79adSDenis Ciocca int err; 54872e79adSDenis Ciocca 55efc78983SAndy Shevchenko st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias)); 56291d83f2SDenis Ciocca 57291d83f2SDenis Ciocca settings = st_magn_get_settings(spi->modalias); 58291d83f2SDenis Ciocca if (!settings) { 59291d83f2SDenis Ciocca dev_err(&spi->dev, "device name %s not recognized.\n", 60291d83f2SDenis Ciocca spi->modalias); 61291d83f2SDenis Ciocca return -ENODEV; 62291d83f2SDenis Ciocca } 63291d83f2SDenis Ciocca 647fc5ad7eSSachin Kamat indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*mdata)); 657fc5ad7eSSachin Kamat if (!indio_dev) 667fc5ad7eSSachin Kamat return -ENOMEM; 67872e79adSDenis Ciocca 68872e79adSDenis Ciocca mdata = iio_priv(indio_dev); 69291d83f2SDenis Ciocca mdata->sensor_settings = (struct st_sensor_settings *)settings; 70872e79adSDenis Ciocca 711ecd245eSDenis Ciocca err = st_sensors_spi_configure(indio_dev, spi); 721ecd245eSDenis Ciocca if (err < 0) 731ecd245eSDenis Ciocca return err; 74872e79adSDenis Ciocca 752109eb4cSDenis CIOCCA err = st_magn_common_probe(indio_dev); 76872e79adSDenis Ciocca if (err < 0) 777fc5ad7eSSachin Kamat return err; 78872e79adSDenis Ciocca 79872e79adSDenis Ciocca return 0; 80872e79adSDenis Ciocca } 81872e79adSDenis Ciocca 82872e79adSDenis Ciocca static int st_magn_spi_remove(struct spi_device *spi) 83872e79adSDenis Ciocca { 84872e79adSDenis Ciocca struct iio_dev *indio_dev = spi_get_drvdata(spi); 85872e79adSDenis Ciocca st_magn_common_remove(indio_dev); 86872e79adSDenis Ciocca 87872e79adSDenis Ciocca return 0; 88872e79adSDenis Ciocca } 89872e79adSDenis Ciocca 90872e79adSDenis Ciocca static const struct spi_device_id st_magn_id_table[] = { 91872e79adSDenis Ciocca { LIS3MDL_MAGN_DEV_NAME }, 921e9676a8SGiuseppe Barba { LSM303AGR_MAGN_DEV_NAME }, 93d0b7fea5SLorenzo Bianconi { LIS2MDL_MAGN_DEV_NAME }, 940d92aa2cSMartin Kelly { LSM9DS1_MAGN_DEV_NAME }, 95872e79adSDenis Ciocca {}, 96872e79adSDenis Ciocca }; 97872e79adSDenis Ciocca MODULE_DEVICE_TABLE(spi, st_magn_id_table); 98872e79adSDenis Ciocca 99872e79adSDenis Ciocca static struct spi_driver st_magn_driver = { 100872e79adSDenis Ciocca .driver = { 101872e79adSDenis Ciocca .name = "st-magn-spi", 102*ecb27c5eSAndy Shevchenko .of_match_table = st_magn_of_match, 103872e79adSDenis Ciocca }, 104872e79adSDenis Ciocca .probe = st_magn_spi_probe, 105872e79adSDenis Ciocca .remove = st_magn_spi_remove, 106872e79adSDenis Ciocca .id_table = st_magn_id_table, 107872e79adSDenis Ciocca }; 108872e79adSDenis Ciocca module_spi_driver(st_magn_driver); 109872e79adSDenis Ciocca 110872e79adSDenis Ciocca MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 111872e79adSDenis Ciocca MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver"); 112872e79adSDenis Ciocca MODULE_LICENSE("GPL v2"); 113