1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Murata ZPA2326 pressure and temperature sensor IIO driver
4 *
5 * Copyright (c) 2016 Parrot S.A.
6 *
7 * Author: Gregor Boirie <gregor.boirie@parrot.com>
8 */
9
10#ifndef _ZPA2326_H
11#define _ZPA2326_H
12
13/* Register map. */
14#define ZPA2326_REF_P_XL_REG              (0x8)
15#define ZPA2326_REF_P_L_REG               (0x9)
16#define ZPA2326_REF_P_H_REG               (0xa)
17#define ZPA2326_DEVICE_ID_REG             (0xf)
18#define ZPA2326_DEVICE_ID                 (0xb9)
19#define ZPA2326_RES_CONF_REG              (0x10)
20#define ZPA2326_CTRL_REG0_REG             (0x20)
21#define ZPA2326_CTRL_REG0_ONE_SHOT        BIT(0)
22#define ZPA2326_CTRL_REG0_ENABLE          BIT(1)
23#define ZPA2326_CTRL_REG1_REG             (0x21)
24#define ZPA2326_CTRL_REG1_MASK_DATA_READY BIT(2)
25#define ZPA2326_CTRL_REG2_REG             (0x22)
26#define ZPA2326_CTRL_REG2_SWRESET         BIT(2)
27#define ZPA2326_CTRL_REG3_REG             (0x23)
28#define ZPA2326_CTRL_REG3_ODR_SHIFT       (4)
29#define ZPA2326_CTRL_REG3_ENABLE_MEAS     BIT(7)
30#define ZPA2326_INT_SOURCE_REG            (0x24)
31#define ZPA2326_INT_SOURCE_DATA_READY     BIT(2)
32#define ZPA2326_THS_P_LOW_REG             (0x25)
33#define ZPA2326_THS_P_HIGH_REG            (0x26)
34#define ZPA2326_STATUS_REG                (0x27)
35#define ZPA2326_STATUS_P_DA               BIT(1)
36#define ZPA2326_STATUS_FIFO_E             BIT(2)
37#define ZPA2326_STATUS_P_OR               BIT(5)
38#define ZPA2326_PRESS_OUT_XL_REG          (0x28)
39#define ZPA2326_PRESS_OUT_L_REG           (0x29)
40#define ZPA2326_PRESS_OUT_H_REG           (0x2a)
41#define ZPA2326_TEMP_OUT_L_REG            (0x2b)
42#define ZPA2326_TEMP_OUT_H_REG            (0x2c)
43
44struct device;
45struct regmap;
46
47bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg);
48bool zpa2326_isreg_readable(struct device *dev, unsigned int reg);
49bool zpa2326_isreg_precious(struct device *dev, unsigned int reg);
50
51/**
52 * zpa2326_probe() - Instantiate and register core ZPA2326 IIO device
53 * @parent: Hardware sampling device the created IIO device will be a child of.
54 * @name:   Arbitrary name to identify the device.
55 * @irq:    Interrupt line, negative if none.
56 * @hwid:   Expected device hardware id.
57 * @regmap: Registers map used to abstract underlying bus accesses.
58 *
59 * Return: Zero when successful, a negative error code otherwise.
60 */
61int zpa2326_probe(struct device        *parent,
62		  const char           *name,
63		  int                   irq,
64		  unsigned int          hwid,
65		  struct regmap        *regmap);
66
67/**
68 * zpa2326_remove() - Unregister and destroy core ZPA2326 IIO device.
69 * @parent: Hardware sampling device the IIO device to remove is a child of.
70 */
71void zpa2326_remove(const struct device *parent);
72
73#ifdef CONFIG_PM
74#include <linux/pm.h>
75extern const struct dev_pm_ops zpa2326_pm_ops;
76#define ZPA2326_PM_OPS (&zpa2326_pm_ops)
77#else
78#define ZPA2326_PM_OPS (NULL)
79#endif
80
81#endif
82