| /* Copyright 2015 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| /* BMM150 magnetometer definition */ |
| |
| #ifndef __CROS_EC_MAG_BMM150_H |
| #define __CROS_EC_MAG_BMM150_H |
| |
| #include "accelgyro.h" |
| #include "mag_cal.h" |
| |
| #define BMM150_ADDR0 0x20 |
| #define BMM150_ADDR1 0x22 |
| #define BMM150_ADDR2 0x24 |
| #define BMM150_ADDR3 0x26 |
| |
| #define BMM150_CHIP_ID 0x40 |
| #define BMM150_CHIP_ID_MAJOR 0x32 |
| |
| #define BMM150_BASE_DATA 0x42 |
| |
| #define BMM150_INT_STATUS 0x4a |
| #define BMM150_PWR_CTRL 0x4b |
| #define BMM150_SRST ((1 << 7) | (1 << 1)) |
| #define BMM150_PWR_ON (1 << 0) |
| |
| #define BMM150_OP_CTRL 0x4c |
| #define BMM150_OP_MODE_OFFSET 1 |
| #define BMM150_OP_MODE_MASK 3 |
| #define BMM150_OP_MODE_NORMAL 0x00 |
| #define BMM150_OP_MODE_FORCED 0x01 |
| #define BMM150_OP_MODE_SLEEP 0x03 |
| |
| #define BMM150_INT_CTRL 0x4d |
| |
| #define BMM150_REPXY 0x51 |
| #define BMM150_LOW_POWER_nXY 3 |
| #define BMM150_REGULAR_nXY 9 |
| #define BMM150_ENHANCED_nXY 15 |
| #define BMM150_HIGH_ACCURACY_nXY 47 |
| #define BMM150_SPECIAL_nXY 75 |
| #define BMM150_REPZ 0x52 |
| #define BMM150_LOW_POWER_nZ 3 |
| #define BMM150_REGULAR_nZ 15 |
| #define BMM150_ENHANCED_nZ 27 |
| #define BMM150_HIGH_ACCURACY_nZ 83 |
| #define BMM150_SPECIAL_nZ 27 |
| |
| #define BMM150_REP(_preset, _axis) CONCAT4(BMM150_, _preset, _n, _axis) |
| |
| /* Hidden registers for RHALL calculation */ |
| #define BMM150_REGA_DIG_X1 0x5d |
| #define BMM150_REGA_DIG_Y1 0x5e |
| #define BMM150_REGA_DIG_Z4_LSB 0x62 |
| #define BMM150_REGA_DIG_Z4_MSB 0x63 |
| #define BMM150_REGA_DIG_X2 0x64 |
| #define BMM150_REGA_DIG_Y2 0x65 |
| #define BMM150_REGA_DIG_Z2_LSB 0x68 |
| #define BMM150_REGA_DIG_Z2_MSB 0x69 |
| #define BMM150_REGA_DIG_Z1_LSB 0x6a |
| #define BMM150_REGA_DIG_Z1_MSB 0x6b |
| #define BMM150_REGA_DIG_XYZ1_LSB 0x6c |
| #define BMM150_REGA_DIG_XYZ1_MSB 0x6d |
| #define BMM150_REGA_DIG_Z3_LSB 0x6e |
| #define BMM150_REGA_DIG_Z3_MSB 0x6f |
| #define BMM150_REGA_DIG_XY2 0x70 |
| #define BMM150_REGA_DIG_XY1 0x71 |
| |
| /* Overflow */ |
| |
| #define BMM150_FLIP_OVERFLOW_ADCVAL (-4096) |
| #define BMM150_HALL_OVERFLOW_ADCVAL (-16384) |
| #define BMM150_OVERFLOW_OUTPUT (0x8000) |
| |
| /* Min and Max sampling frequency in mHz */ |
| #define BMM150_MAG_MIN_FREQ 781 |
| #define BMM150_MAG_MAX_FREQ 800000 |
| |
| struct bmm150_comp_registers { |
| /* Local copy of the compensation registers. */ |
| int8_t dig1[2]; |
| int8_t dig2[2]; |
| |
| uint16_t dig_z1; |
| int16_t dig_z2; |
| int16_t dig_z3; |
| int16_t dig_z4; |
| |
| uint8_t dig_xy1; |
| int8_t dig_xy2; |
| |
| uint16_t dig_xyz1; |
| }; |
| |
| struct bmm150_private_data { |
| struct bmm150_comp_registers comp; |
| struct mag_cal_t cal; |
| }; |
| #define BMM150_COMP_REG(_s) \ |
| (&BMI160_GET_DATA(_s)->compass.comp) |
| |
| #define BMM150_CAL(_s) \ |
| (&BMI160_GET_DATA(_s)->compass.cal) |
| |
| /* Specific initialization of BMM150 when behing BMI160 */ |
| int bmm150_init(const struct motion_sensor_t *s); |
| |
| /* Command to normalize and apply temperature compensation */ |
| void bmm150_normalize(const struct motion_sensor_t *s, |
| vector_3_t v, |
| uint8_t *data); |
| |
| int bmm150_set_offset(const struct motion_sensor_t *s, |
| const vector_3_t offset); |
| |
| int bmm150_get_offset(const struct motion_sensor_t *s, |
| vector_3_t offset); |
| |
| #endif /* __CROS_EC_MAG_BMM150_H */ |