xref: /openbmc/linux/drivers/iio/accel/mma9551_core.h (revision 2025cf9e)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Common code for Freescale MMA955x Intelligent Sensor Platform drivers
4  * Copyright (c) 2014, Intel Corporation.
5  */
6 
7 #ifndef _MMA9551_CORE_H_
8 #define _MMA9551_CORE_H_
9 
10 /* Applications IDs */
11 #define MMA9551_APPID_VERSION		0x00
12 #define MMA9551_APPID_GPIO		0x03
13 #define MMA9551_APPID_AFE		0x06
14 #define MMA9551_APPID_TILT		0x0B
15 #define MMA9551_APPID_SLEEP_WAKE	0x12
16 #define MMA9551_APPID_PEDOMETER	        0x15
17 #define MMA9551_APPID_RSC		0x17
18 #define MMA9551_APPID_NONE		0xff
19 
20 /* Reset/Suspend/Clear application app masks */
21 #define MMA9551_RSC_PED			BIT(21)
22 
23 #define MMA9551_AUTO_SUSPEND_DELAY_MS	2000
24 
25 enum mma9551_gpio_pin {
26 	mma9551_gpio6 = 0,
27 	mma9551_gpio7,
28 	mma9551_gpio8,
29 	mma9551_gpio9,
30 	mma9551_gpio_max = mma9551_gpio9,
31 };
32 
33 #define MMA9551_ACCEL_CHANNEL(axis) {				\
34 	.type = IIO_ACCEL,					\
35 	.modified = 1,						\
36 	.channel2 = axis,					\
37 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
38 	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
39 }
40 
41 int mma9551_read_config_byte(struct i2c_client *client, u8 app_id,
42 			     u16 reg, u8 *val);
43 int mma9551_write_config_byte(struct i2c_client *client, u8 app_id,
44 			      u16 reg, u8 val);
45 int mma9551_read_status_byte(struct i2c_client *client, u8 app_id,
46 			     u16 reg, u8 *val);
47 int mma9551_read_config_word(struct i2c_client *client, u8 app_id,
48 			     u16 reg, u16 *val);
49 int mma9551_write_config_word(struct i2c_client *client, u8 app_id,
50 			      u16 reg, u16 val);
51 int mma9551_read_status_word(struct i2c_client *client, u8 app_id,
52 			     u16 reg, u16 *val);
53 int mma9551_read_config_words(struct i2c_client *client, u8 app_id,
54 			      u16 reg, u8 len, u16 *buf);
55 int mma9551_read_status_words(struct i2c_client *client, u8 app_id,
56 			      u16 reg, u8 len, u16 *buf);
57 int mma9551_write_config_words(struct i2c_client *client, u8 app_id,
58 			       u16 reg, u8 len, u16 *buf);
59 int mma9551_update_config_bits(struct i2c_client *client, u8 app_id,
60 			       u16 reg, u8 mask, u8 val);
61 int mma9551_gpio_config(struct i2c_client *client, enum mma9551_gpio_pin pin,
62 			u8 app_id, u8 bitnum, int polarity);
63 int mma9551_read_version(struct i2c_client *client);
64 int mma9551_set_device_state(struct i2c_client *client, bool enable);
65 int mma9551_set_power_state(struct i2c_client *client, bool on);
66 void mma9551_sleep(int freq);
67 int mma9551_read_accel_chan(struct i2c_client *client,
68 			    const struct iio_chan_spec *chan,
69 			    int *val, int *val2);
70 int mma9551_read_accel_scale(int *val, int *val2);
71 int mma9551_app_reset(struct i2c_client *client, u32 app_mask);
72 
73 #endif /* _MMA9551_CORE_H_ */
74