drivers/iio/pressure/zpa2326.h

   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
  44 struct device;
  45 struct regmap;
  46
  47 bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg);
  48 bool zpa2326_isreg_readable(struct device *dev, unsigned int reg);
  49 bool 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  */
  61 int 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  */
  71 void zpa2326_remove(const struct device *parent);
  72
  73 #ifdef CONFIG_PM
  74 #include <linux/pm.h>
  75 extern 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