blob: 05d3e1e3a4490021c99c835e04e874fd0bc31fa7 [file] [log] [blame]
Gregor Boirie03b262f2016-09-13 14:23:14 +02001/*
2 * Murata ZPA2326 pressure and temperature sensor IIO driver
3 *
4 * Copyright (c) 2016 Parrot S.A.
5 *
6 * Author: Gregor Boirie <gregor.boirie@parrot.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 */
17
18#ifndef _ZPA2326_H
19#define _ZPA2326_H
20
21/* Register map. */
22#define ZPA2326_REF_P_XL_REG (0x8)
23#define ZPA2326_REF_P_L_REG (0x9)
24#define ZPA2326_REF_P_H_REG (0xa)
25#define ZPA2326_DEVICE_ID_REG (0xf)
26#define ZPA2326_DEVICE_ID (0xb9)
27#define ZPA2326_RES_CONF_REG (0x10)
28#define ZPA2326_CTRL_REG0_REG (0x20)
29#define ZPA2326_CTRL_REG0_ONE_SHOT BIT(0)
30#define ZPA2326_CTRL_REG0_ENABLE BIT(1)
31#define ZPA2326_CTRL_REG1_REG (0x21)
32#define ZPA2326_CTRL_REG1_MASK_DATA_READY BIT(2)
33#define ZPA2326_CTRL_REG2_REG (0x22)
34#define ZPA2326_CTRL_REG2_SWRESET BIT(2)
35#define ZPA2326_CTRL_REG3_REG (0x23)
36#define ZPA2326_CTRL_REG3_ODR_SHIFT (4)
37#define ZPA2326_CTRL_REG3_ENABLE_MEAS BIT(7)
38#define ZPA2326_INT_SOURCE_REG (0x24)
39#define ZPA2326_INT_SOURCE_DATA_READY BIT(2)
40#define ZPA2326_THS_P_LOW_REG (0x25)
41#define ZPA2326_THS_P_HIGH_REG (0x26)
42#define ZPA2326_STATUS_REG (0x27)
43#define ZPA2326_STATUS_P_DA BIT(1)
44#define ZPA2326_STATUS_FIFO_E BIT(2)
45#define ZPA2326_STATUS_P_OR BIT(5)
46#define ZPA2326_PRESS_OUT_XL_REG (0x28)
47#define ZPA2326_PRESS_OUT_L_REG (0x29)
48#define ZPA2326_PRESS_OUT_H_REG (0x2a)
49#define ZPA2326_TEMP_OUT_L_REG (0x2b)
50#define ZPA2326_TEMP_OUT_H_REG (0x2c)
51
52struct device;
53struct regmap;
54
55bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg);
56bool zpa2326_isreg_readable(struct device *dev, unsigned int reg);
57bool zpa2326_isreg_precious(struct device *dev, unsigned int reg);
58
59/**
60 * zpa2326_probe() - Instantiate and register core ZPA2326 IIO device
61 * @parent: Hardware sampling device the created IIO device will be a child of.
62 * @name: Arbitrary name to identify the device.
63 * @irq: Interrupt line, negative if none.
64 * @hwid: Expected device hardware id.
65 * @regmap: Registers map used to abstract underlying bus accesses.
66 *
67 * Return: Zero when successful, a negative error code otherwise.
68 */
69int zpa2326_probe(struct device *parent,
70 const char *name,
71 int irq,
72 unsigned int hwid,
73 struct regmap *regmap);
74
75/**
76 * zpa2326_remove() - Unregister and destroy core ZPA2326 IIO device.
77 * @parent: Hardware sampling device the IIO device to remove is a child of.
78 */
79void zpa2326_remove(const struct device *parent);
80
81#ifdef CONFIG_PM
82#include <linux/pm.h>
83extern const struct dev_pm_ops zpa2326_pm_ops;
84#define ZPA2326_PM_OPS (&zpa2326_pm_ops)
85#else
86#define ZPA2326_PM_OPS (NULL)
87#endif
88
89#endif