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 90