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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Support for PNI RM3100 3-axis geomagnetic sensor on a spi bus.
- *
- * Copyright (C) 2018 Song Qiang <[email protected]>
- */
- #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 <[email protected]>");
- MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer spi driver");
- MODULE_LICENSE("GPL v2");
- MODULE_IMPORT_NS(IIO_RM3100);
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