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rjw1f884582022-01-06 17:20:42 +08001/*
2 * Header file for hmc5843 driver
3 *
4 * Split from hmc5843.c
5 * Copyright (C) Josef Gajdusek <atx@atx.name>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef HMC5843_CORE_H
13#define HMC5843_CORE_H
14
15#include <linux/regmap.h>
16#include <linux/iio/iio.h>
17
18#define HMC5843_CONFIG_REG_A 0x00
19#define HMC5843_CONFIG_REG_B 0x01
20#define HMC5843_MODE_REG 0x02
21#define HMC5843_DATA_OUT_MSB_REGS 0x03
22#define HMC5843_STATUS_REG 0x09
23#define HMC5843_ID_REG 0x0a
24#define HMC5843_ID_END 0x0c
25
26enum hmc5843_ids {
27 HMC5843_ID,
28 HMC5883_ID,
29 HMC5883L_ID,
30 HMC5983_ID,
31};
32
33/**
34 * struct hcm5843_data - device specific data
35 * @dev: actual device
36 * @lock: update and read regmap data
37 * @regmap: hardware access register maps
38 * @variant: describe chip variants
39 * @buffer: 3x 16-bit channels + padding + 64-bit timestamp
40 */
41struct hmc5843_data {
42 struct device *dev;
43 struct mutex lock;
44 struct regmap *regmap;
45 const struct hmc5843_chip_info *variant;
46 __be16 buffer[8];
47};
48
49int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
50 enum hmc5843_ids id, const char *name);
51int hmc5843_common_remove(struct device *dev);
52
53int hmc5843_common_suspend(struct device *dev);
54int hmc5843_common_resume(struct device *dev);
55
56#ifdef CONFIG_PM_SLEEP
57static SIMPLE_DEV_PM_OPS(hmc5843_pm_ops,
58 hmc5843_common_suspend,
59 hmc5843_common_resume);
60#define HMC5843_PM_OPS (&hmc5843_pm_ops)
61#else
62#define HMC5843_PM_OPS NULL
63#endif
64
65#endif /* HMC5843_CORE_H */