// SPDX-License-Identifier: GPL-2.0 /* * Support for PNI RM3100 3-axis geomagnetic sensor on a spi bus. * * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com> */ #include <linux/module.h> #include <linux/spi/spi.h> #include "rm3100.h" static const struct regmap_config rm3100_regmap_config = { .reg_bits = 8, .val_bits = 8, .rd_table = &rm3100_readable_table, .wr_table = &rm3100_writable_table, .volatile_table = &rm3100_volatile_table, .read_flag_mask = 0x80, .cache_type = REGCACHE_RBTREE, }; static int rm3100_probe(struct spi_device *spi) { struct regmap *regmap; int ret; /* Actually this device supports both mode 0 and mode 3. */ spi->mode = SPI_MODE_0; /* Data rates cannot exceed 1Mbits. */ spi->max_speed_hz = 1000000; spi->bits_per_word = 8; ret = spi_setup(spi); if (ret) return ret; regmap = devm_regmap_init_spi(spi, &rm3100_regmap_config); if (IS_ERR(regmap)) return PTR_ERR(regmap); return rm3100_common_probe(&spi->dev, regmap, spi->irq); } static const struct of_device_id rm3100_dt_match[] = { { .compatible = "pni,rm3100", }, { } }; MODULE_DEVICE_TABLE(of, rm3100_dt_match); static struct spi_driver rm3100_driver = { .driver = { .name = "rm3100-spi", .of_match_table = rm3100_dt_match, }, .probe = rm3100_probe, }; module_spi_driver(rm3100_driver); MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>"); MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer spi driver"); MODULE_LICENSE("GPL v2"); MODULE_IMPORT_NS("IIO_RM3100");