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Diffstat (limited to 'drivers/iio/magnetometer/rm3100-i2c.c')
-rw-r--r--drivers/iio/magnetometer/rm3100-i2c.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/rm3100-i2c.c b/drivers/iio/magnetometer/rm3100-i2c.c
new file mode 100644
index 000000000..ba669ab71
--- /dev/null
+++ b/drivers/iio/magnetometer/rm3100-i2c.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Support for PNI RM3100 3-axis geomagnetic sensor on a i2c bus.
+ *
+ * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com>
+ *
+ * i2c slave address: 0x20 + SA1 << 1 + SA0.
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.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,
+
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int rm3100_probe(struct i2c_client *client)
+{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(client, &rm3100_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ return rm3100_common_probe(&client->dev, regmap, client->irq);
+}
+
+static const struct of_device_id rm3100_dt_match[] = {
+ { .compatible = "pni,rm3100", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, rm3100_dt_match);
+
+static struct i2c_driver rm3100_driver = {
+ .driver = {
+ .name = "rm3100-i2c",
+ .of_match_table = rm3100_dt_match,
+ },
+ .probe_new = rm3100_probe,
+};
+module_i2c_driver(rm3100_driver);
+
+MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>");
+MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_RM3100);