1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Murata ZPA2326 pressure and temperature sensor IIO driver 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (c) 2016 Parrot S.A. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Author: Gregor Boirie <gregor.boirie@parrot.com> 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef _ZPA2326_H 11*4882a593Smuzhiyun #define _ZPA2326_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* Register map. */ 14*4882a593Smuzhiyun #define ZPA2326_REF_P_XL_REG (0x8) 15*4882a593Smuzhiyun #define ZPA2326_REF_P_L_REG (0x9) 16*4882a593Smuzhiyun #define ZPA2326_REF_P_H_REG (0xa) 17*4882a593Smuzhiyun #define ZPA2326_DEVICE_ID_REG (0xf) 18*4882a593Smuzhiyun #define ZPA2326_DEVICE_ID (0xb9) 19*4882a593Smuzhiyun #define ZPA2326_RES_CONF_REG (0x10) 20*4882a593Smuzhiyun #define ZPA2326_CTRL_REG0_REG (0x20) 21*4882a593Smuzhiyun #define ZPA2326_CTRL_REG0_ONE_SHOT BIT(0) 22*4882a593Smuzhiyun #define ZPA2326_CTRL_REG0_ENABLE BIT(1) 23*4882a593Smuzhiyun #define ZPA2326_CTRL_REG1_REG (0x21) 24*4882a593Smuzhiyun #define ZPA2326_CTRL_REG1_MASK_DATA_READY BIT(2) 25*4882a593Smuzhiyun #define ZPA2326_CTRL_REG2_REG (0x22) 26*4882a593Smuzhiyun #define ZPA2326_CTRL_REG2_SWRESET BIT(2) 27*4882a593Smuzhiyun #define ZPA2326_CTRL_REG3_REG (0x23) 28*4882a593Smuzhiyun #define ZPA2326_CTRL_REG3_ODR_SHIFT (4) 29*4882a593Smuzhiyun #define ZPA2326_CTRL_REG3_ENABLE_MEAS BIT(7) 30*4882a593Smuzhiyun #define ZPA2326_INT_SOURCE_REG (0x24) 31*4882a593Smuzhiyun #define ZPA2326_INT_SOURCE_DATA_READY BIT(2) 32*4882a593Smuzhiyun #define ZPA2326_THS_P_LOW_REG (0x25) 33*4882a593Smuzhiyun #define ZPA2326_THS_P_HIGH_REG (0x26) 34*4882a593Smuzhiyun #define ZPA2326_STATUS_REG (0x27) 35*4882a593Smuzhiyun #define ZPA2326_STATUS_P_DA BIT(1) 36*4882a593Smuzhiyun #define ZPA2326_STATUS_FIFO_E BIT(2) 37*4882a593Smuzhiyun #define ZPA2326_STATUS_P_OR BIT(5) 38*4882a593Smuzhiyun #define ZPA2326_PRESS_OUT_XL_REG (0x28) 39*4882a593Smuzhiyun #define ZPA2326_PRESS_OUT_L_REG (0x29) 40*4882a593Smuzhiyun #define ZPA2326_PRESS_OUT_H_REG (0x2a) 41*4882a593Smuzhiyun #define ZPA2326_TEMP_OUT_L_REG (0x2b) 42*4882a593Smuzhiyun #define ZPA2326_TEMP_OUT_H_REG (0x2c) 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun struct device; 45*4882a593Smuzhiyun struct regmap; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg); 48*4882a593Smuzhiyun bool zpa2326_isreg_readable(struct device *dev, unsigned int reg); 49*4882a593Smuzhiyun bool zpa2326_isreg_precious(struct device *dev, unsigned int reg); 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun /** 52*4882a593Smuzhiyun * zpa2326_probe() - Instantiate and register core ZPA2326 IIO device 53*4882a593Smuzhiyun * @parent: Hardware sampling device the created IIO device will be a child of. 54*4882a593Smuzhiyun * @name: Arbitrary name to identify the device. 55*4882a593Smuzhiyun * @irq: Interrupt line, negative if none. 56*4882a593Smuzhiyun * @hwid: Expected device hardware id. 57*4882a593Smuzhiyun * @regmap: Registers map used to abstract underlying bus accesses. 58*4882a593Smuzhiyun * 59*4882a593Smuzhiyun * Return: Zero when successful, a negative error code otherwise. 60*4882a593Smuzhiyun */ 61*4882a593Smuzhiyun int zpa2326_probe(struct device *parent, 62*4882a593Smuzhiyun const char *name, 63*4882a593Smuzhiyun int irq, 64*4882a593Smuzhiyun unsigned int hwid, 65*4882a593Smuzhiyun struct regmap *regmap); 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun /** 68*4882a593Smuzhiyun * zpa2326_remove() - Unregister and destroy core ZPA2326 IIO device. 69*4882a593Smuzhiyun * @parent: Hardware sampling device the IIO device to remove is a child of. 70*4882a593Smuzhiyun */ 71*4882a593Smuzhiyun void zpa2326_remove(const struct device *parent); 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun #ifdef CONFIG_PM 74*4882a593Smuzhiyun #include <linux/pm.h> 75*4882a593Smuzhiyun extern const struct dev_pm_ops zpa2326_pm_ops; 76*4882a593Smuzhiyun #define ZPA2326_PM_OPS (&zpa2326_pm_ops) 77*4882a593Smuzhiyun #else 78*4882a593Smuzhiyun #define ZPA2326_PM_OPS (NULL) 79*4882a593Smuzhiyun #endif 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun #endif 82