drivers/iio/accel/mma9551_core.h

   1 /*
   2  * Common code for Freescale MMA955x Intelligent Sensor Platform drivers
   3  * Copyright (c) 2014, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #ifndef _MMA9551_CORE_H_
  16 #define _MMA9551_CORE_H_
  17
  18 /* Applications IDs */
  19 #define MMA9551_APPID_VERSION           0x00
  20 #define MMA9551_APPID_GPIO              0x03
  21 #define MMA9551_APPID_AFE               0x06
  22 #define MMA9551_APPID_TILT              0x0B
  23 #define MMA9551_APPID_SLEEP_WAKE        0x12
  24 #define MMA9551_APPID_PEDOMETER         0x15
  25 #define MMA9551_APPID_RSC               0x17
  26 #define MMA9551_APPID_NONE              0xff
  27
  28 /* Reset/Suspend/Clear application app masks */
  29 #define MMA9551_RSC_PED                 BIT(21)
  30
  31 #define MMA9551_AUTO_SUSPEND_DELAY_MS   2000
  32
  33 enum mma9551_gpio_pin {
  34         mma9551_gpio6 = 0,
  35         mma9551_gpio7,
  36         mma9551_gpio8,
  37         mma9551_gpio9,
  38         mma9551_gpio_max = mma9551_gpio9,
  39 };
  40
  41 #define MMA9551_ACCEL_CHANNEL(axis) {                           \
  42         .type = IIO_ACCEL,                                      \
  43         .modified = 1,                                          \
  44         .channel2 = axis,                                       \
  45         .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),           \
  46         .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),   \
  47 }
  48
  49 int mma9551_read_config_byte(struct i2c_client *client, u8 app_id,
  50                              u16 reg, u8 *val);
  51 int mma9551_write_config_byte(struct i2c_client *client, u8 app_id,
  52                               u16 reg, u8 val);
  53 int mma9551_read_status_byte(struct i2c_client *client, u8 app_id,
  54                              u16 reg, u8 *val);
  55 int mma9551_read_config_word(struct i2c_client *client, u8 app_id,
  56                              u16 reg, u16 *val);
  57 int mma9551_write_config_word(struct i2c_client *client, u8 app_id,
  58                               u16 reg, u16 val);
  59 int mma9551_read_status_word(struct i2c_client *client, u8 app_id,
  60                              u16 reg, u16 *val);
  61 int mma9551_read_config_words(struct i2c_client *client, u8 app_id,
  62                               u16 reg, u8 len, u16 *buf);
  63 int mma9551_read_status_words(struct i2c_client *client, u8 app_id,
  64                               u16 reg, u8 len, u16 *buf);
  65 int mma9551_write_config_words(struct i2c_client *client, u8 app_id,
  66                                u16 reg, u8 len, u16 *buf);
  67 int mma9551_update_config_bits(struct i2c_client *client, u8 app_id,
  68                                u16 reg, u8 mask, u8 val);
  69 int mma9551_gpio_config(struct i2c_client *client, enum mma9551_gpio_pin pin,
  70                         u8 app_id, u8 bitnum, int polarity);
  71 int mma9551_read_version(struct i2c_client *client);
  72 int mma9551_set_device_state(struct i2c_client *client, bool enable);
  73 int mma9551_set_power_state(struct i2c_client *client, bool on);
  74 void mma9551_sleep(int freq);
  75 int mma9551_read_accel_chan(struct i2c_client *client,
  76                             const struct iio_chan_spec *chan,
  77                             int *val, int *val2);
  78 int mma9551_read_accel_scale(int *val, int *val2);
  79 int mma9551_app_reset(struct i2c_client *client, u32 app_mask);
  80
  81 #endif /* _MMA9551_CORE_H_ */