1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Header file for hmc5843 driver
4 *
5 * Split from hmc5843.c
6 * Copyright (C) Josef Gajdusek <atx@atx.name>
7 */
8
9#ifndef HMC5843_CORE_H
10#define HMC5843_CORE_H
11
12#include <linux/regmap.h>
13#include <linux/iio/iio.h>
14
15#define HMC5843_CONFIG_REG_A 0x00
16#define HMC5843_CONFIG_REG_B 0x01
17#define HMC5843_MODE_REG 0x02
18#define HMC5843_DATA_OUT_MSB_REGS 0x03
19#define HMC5843_STATUS_REG 0x09
20#define HMC5843_ID_REG 0x0a
21#define HMC5843_ID_END 0x0c
22
23enum hmc5843_ids {
24 HMC5843_ID,
25 HMC5883_ID,
26 HMC5883L_ID,
27 HMC5983_ID,
28};
29
30/**
31 * struct hmc5843_data - device specific data
32 * @dev: actual device
33 * @lock: update and read regmap data
34 * @regmap: hardware access register maps
35 * @variant: describe chip variants
36 * @scan: buffer to pack data for passing to
37 * iio_push_to_buffers_with_timestamp()
38 */
39struct hmc5843_data {
40 struct device *dev;
41 struct mutex lock;
42 struct regmap *regmap;
43 const struct hmc5843_chip_info *variant;
44 struct iio_mount_matrix orientation;
45 struct {
46 __be16 chans[3];
47 s64 timestamp __aligned(8);
48 } scan;
49};
50
51int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
52 enum hmc5843_ids id, const char *name);
53void hmc5843_common_remove(struct device *dev);
54
55extern const struct dev_pm_ops hmc5843_pm_ops;
56#endif /* HMC5843_CORE_H */
57

source code of linux/drivers/iio/magnetometer/hmc5843.h