| Gregor Boirie | 03b262f | 2016-09-13 14:23:14 +0200 | [diff] [blame] | 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 |