LXR linux/drivers/iio/pressure/zpa2326.h

   1/*
   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
  90