summaryrefslogtreecommitdiffstats
path: root/drivers/iio/magnetometer/hmc5843_i2c.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /drivers/iio/magnetometer/hmc5843_i2c.c
parentInitial commit. (diff)
downloadlinux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz
linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/iio/magnetometer/hmc5843_i2c.c')
-rw-r--r--drivers/iio/magnetometer/hmc5843_i2c.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/hmc5843_i2c.c b/drivers/iio/magnetometer/hmc5843_i2c.c
new file mode 100644
index 000000000..86abba582
--- /dev/null
+++ b/drivers/iio/magnetometer/hmc5843_i2c.c
@@ -0,0 +1,108 @@
+/*
+ * i2c driver for hmc5843/5843/5883/5883l/5983
+ *
+ * Split from hmc5843.c
+ * Copyright (C) Josef Gajdusek <atx@atx.name>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/triggered_buffer.h>
+
+#include "hmc5843.h"
+
+static const struct regmap_range hmc5843_readable_ranges[] = {
+ regmap_reg_range(0, HMC5843_ID_END),
+};
+
+static const struct regmap_access_table hmc5843_readable_table = {
+ .yes_ranges = hmc5843_readable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges),
+};
+
+static const struct regmap_range hmc5843_writable_ranges[] = {
+ regmap_reg_range(0, HMC5843_MODE_REG),
+};
+
+static const struct regmap_access_table hmc5843_writable_table = {
+ .yes_ranges = hmc5843_writable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges),
+};
+
+static const struct regmap_range hmc5843_volatile_ranges[] = {
+ regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG),
+};
+
+static const struct regmap_access_table hmc5843_volatile_table = {
+ .yes_ranges = hmc5843_volatile_ranges,
+ .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges),
+};
+
+static const struct regmap_config hmc5843_i2c_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .rd_table = &hmc5843_readable_table,
+ .wr_table = &hmc5843_writable_table,
+ .volatile_table = &hmc5843_volatile_table,
+
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int hmc5843_i2c_probe(struct i2c_client *cli,
+ const struct i2c_device_id *id)
+{
+ struct regmap *regmap = devm_regmap_init_i2c(cli,
+ &hmc5843_i2c_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ return hmc5843_common_probe(&cli->dev,
+ regmap,
+ id->driver_data, id->name);
+}
+
+static int hmc5843_i2c_remove(struct i2c_client *client)
+{
+ return hmc5843_common_remove(&client->dev);
+}
+
+static const struct i2c_device_id hmc5843_id[] = {
+ { "hmc5843", HMC5843_ID },
+ { "hmc5883", HMC5883_ID },
+ { "hmc5883l", HMC5883L_ID },
+ { "hmc5983", HMC5983_ID },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, hmc5843_id);
+
+static const struct of_device_id hmc5843_of_match[] = {
+ { .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID },
+ { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID },
+ { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID },
+ { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID },
+ {}
+};
+MODULE_DEVICE_TABLE(of, hmc5843_of_match);
+
+static struct i2c_driver hmc5843_driver = {
+ .driver = {
+ .name = "hmc5843",
+ .pm = HMC5843_PM_OPS,
+ .of_match_table = hmc5843_of_match,
+ },
+ .id_table = hmc5843_id,
+ .probe = hmc5843_i2c_probe,
+ .remove = hmc5843_i2c_remove,
+};
+module_i2c_driver(hmc5843_driver);
+
+MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
+MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
+MODULE_LICENSE("GPL");