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 82