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
  52 struct device;
  53 struct regmap;
  54
  55 bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg);
  56 bool zpa2326_isreg_readable(struct device *dev, unsigned int reg);
  57 bool 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  */
  69 int 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  */
  79 void zpa2326_remove(const struct device *parent);
  80
  81 #ifdef CONFIG_PM
  82 #include <linux/pm.h>
  83 extern 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