90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
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/*
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* Murata ZPA2326 pressure and temperature sensor IIO driver
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*
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* Copyright (c) 2016 Parrot S.A.
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*
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* Author: Gregor Boirie <gregor.boirie@parrot.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef _ZPA2326_H
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#define _ZPA2326_H
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/* Register map. */
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#define ZPA2326_REF_P_XL_REG (0x8)
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#define ZPA2326_REF_P_L_REG (0x9)
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#define ZPA2326_REF_P_H_REG (0xa)
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#define ZPA2326_DEVICE_ID_REG (0xf)
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#define ZPA2326_DEVICE_ID (0xb9)
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#define ZPA2326_RES_CONF_REG (0x10)
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#define ZPA2326_CTRL_REG0_REG (0x20)
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#define ZPA2326_CTRL_REG0_ONE_SHOT BIT(0)
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#define ZPA2326_CTRL_REG0_ENABLE BIT(1)
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#define ZPA2326_CTRL_REG1_REG (0x21)
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#define ZPA2326_CTRL_REG1_MASK_DATA_READY BIT(2)
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#define ZPA2326_CTRL_REG2_REG (0x22)
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#define ZPA2326_CTRL_REG2_SWRESET BIT(2)
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#define ZPA2326_CTRL_REG3_REG (0x23)
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#define ZPA2326_CTRL_REG3_ODR_SHIFT (4)
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#define ZPA2326_CTRL_REG3_ENABLE_MEAS BIT(7)
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#define ZPA2326_INT_SOURCE_REG (0x24)
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#define ZPA2326_INT_SOURCE_DATA_READY BIT(2)
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#define ZPA2326_THS_P_LOW_REG (0x25)
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#define ZPA2326_THS_P_HIGH_REG (0x26)
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#define ZPA2326_STATUS_REG (0x27)
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#define ZPA2326_STATUS_P_DA BIT(1)
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#define ZPA2326_STATUS_FIFO_E BIT(2)
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#define ZPA2326_STATUS_P_OR BIT(5)
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#define ZPA2326_PRESS_OUT_XL_REG (0x28)
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#define ZPA2326_PRESS_OUT_L_REG (0x29)
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#define ZPA2326_PRESS_OUT_H_REG (0x2a)
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#define ZPA2326_TEMP_OUT_L_REG (0x2b)
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#define ZPA2326_TEMP_OUT_H_REG (0x2c)
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struct device;
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struct regmap;
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bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg);
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bool zpa2326_isreg_readable(struct device *dev, unsigned int reg);
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bool zpa2326_isreg_precious(struct device *dev, unsigned int reg);
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/**
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* zpa2326_probe() - Instantiate and register core ZPA2326 IIO device
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* @parent: Hardware sampling device the created IIO device will be a child of.
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* @name: Arbitrary name to identify the device.
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* @irq: Interrupt line, negative if none.
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* @hwid: Expected device hardware id.
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* @regmap: Registers map used to abstract underlying bus accesses.
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*
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* Return: Zero when successful, a negative error code otherwise.
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*/
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int zpa2326_probe(struct device *parent,
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const char *name,
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int irq,
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unsigned int hwid,
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struct regmap *regmap);
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/**
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* zpa2326_remove() - Unregister and destroy core ZPA2326 IIO device.
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* @parent: Hardware sampling device the IIO device to remove is a child of.
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*/
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void zpa2326_remove(const struct device *parent);
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#ifdef CONFIG_PM
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#include <linux/pm.h>
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extern const struct dev_pm_ops zpa2326_pm_ops;
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#define ZPA2326_PM_OPS (&zpa2326_pm_ops)
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#else
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#define ZPA2326_PM_OPS (NULL)
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#endif
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#endif
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