diff options
Diffstat (limited to 'driver/mag_bmm150.c')
| -rw-r--r-- | driver/mag_bmm150.c | 170 |
1 files changed, 77 insertions, 93 deletions
diff --git a/driver/mag_bmm150.c b/driver/mag_bmm150.c index ad1eba7ad0..5088e51c14 100644 --- a/driver/mag_bmm150.c +++ b/driver/mag_bmm150.c @@ -1,4 +1,4 @@ -/* Copyright 2015 The Chromium OS Authors. All rights reserved. +/* Copyright 2015 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -25,75 +25,74 @@ #error "Not implemented" #endif - #define CPUTS(outstr) cputs(CC_ACCEL, outstr) -#define CPRINTF(format, args...) cprintf(CC_ACCEL, format, ## args) -#define CPRINTS(format, args...) cprints(CC_ACCEL, format, ## args) - +#define CPRINTF(format, args...) cprintf(CC_ACCEL, format, ##args) +#define CPRINTS(format, args...) cprints(CC_ACCEL, format, ##args) /**************************************************************************** -* Copyright (C) 2011 - 2014 Bosch Sensortec GmbH -* -****************************************************************************/ + * Copyright (C) 2011 - 2014 Bosch Sensortec GmbH + * + ****************************************************************************/ /*************************************************************************** -* License: -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions are met: -* -* Redistributions of source code must retain the above copyright -* notice, this list of conditions and the following disclaimer. -* -* Redistributions in binary form must reproduce the above copyright -* notice, this list of conditions and the following disclaimer in the -* documentation and/or other materials provided with the distribution. -* -* Neither the name of the copyright holder nor the names of the -* contributors may be used to endorse or promote products derived from -* this software without specific prior written permission. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -* DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR -* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE -* -* The information provided is believed to be accurate and reliable. -* The copyright holder assumes no responsibility for the consequences of use -* of such information nor for any infringement of patents or -* other rights of third parties which may result from its use. -* No license is granted by implication or otherwise under any patent or -* patent rights of the copyright holder. -*/ - -#define BMI150_READ_16BIT_COM_REG(store_, addr_) do { \ - int val; \ - raw_mag_read8(s->port, s->i2c_spi_addr_flags, (addr_), &val); \ - store_ = val; \ - raw_mag_read8(s->port, s->i2c_spi_addr_flags, (addr_) + 1, &val); \ - store_ |= (val << 8); \ -} while (0) + * License: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * Neither the name of the copyright holder nor the names of the + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE + * + * The information provided is believed to be accurate and reliable. + * The copyright holder assumes no responsibility for the consequences of use + * of such information nor for any infringement of patents or + * other rights of third parties which may result from its use. + * No license is granted by implication or otherwise under any patent or + * patent rights of the copyright holder. + */ +#define BMI150_READ_16BIT_COM_REG(store_, addr_) \ + do { \ + int val; \ + raw_mag_read8(s->port, s->i2c_spi_addr_flags, (addr_), &val); \ + store_ = val; \ + raw_mag_read8(s->port, s->i2c_spi_addr_flags, (addr_) + 1, \ + &val); \ + store_ |= (val << 8); \ + } while (0) int bmm150_init(struct motion_sensor_t *s) { int ret; int val; struct bmm150_comp_registers *regs = BMM150_COMP_REG(s); - struct mag_cal_t *moc = BMM150_CAL(s); + struct mag_cal_t *moc = BMM150_CAL(s); /* Set the compass from Suspend to Sleep */ - ret = raw_mag_write8(s->port, s->i2c_spi_addr_flags, - BMM150_PWR_CTRL, BMM150_PWR_ON); + ret = raw_mag_write8(s->port, s->i2c_spi_addr_flags, BMM150_PWR_CTRL, + BMM150_PWR_ON); msleep(4); /* Now we can read the device id */ - ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_CHIP_ID, &val); + ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_CHIP_ID, + &val); if (ret) return EC_ERROR_UNKNOWN; @@ -101,27 +100,24 @@ int bmm150_init(struct motion_sensor_t *s) return EC_ERROR_ACCESS_DENIED; /* Read the private registers for compensation */ - ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REGA_DIG_X1, &val); + ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REGA_DIG_X1, + &val); if (ret) return EC_ERROR_UNKNOWN; regs->dig1[X] = val; - raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REGA_DIG_Y1, &val); + raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REGA_DIG_Y1, &val); regs->dig1[Y] = val; - raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REGA_DIG_X2, &val); + raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REGA_DIG_X2, &val); regs->dig2[X] = val; - raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REGA_DIG_Y2, &val); + raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REGA_DIG_Y2, &val); regs->dig2[Y] = val; - raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REGA_DIG_XY1, &val); + raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REGA_DIG_XY1, + &val); regs->dig_xy1 = val; - raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REGA_DIG_XY2, &val); + raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REGA_DIG_XY2, + &val); regs->dig_xy2 = val; BMI150_READ_16BIT_COM_REG(regs->dig_z1, BMM150_REGA_DIG_Z1_LSB); @@ -130,21 +126,17 @@ int bmm150_init(struct motion_sensor_t *s) BMI150_READ_16BIT_COM_REG(regs->dig_z4, BMM150_REGA_DIG_Z4_LSB); BMI150_READ_16BIT_COM_REG(regs->dig_xyz1, BMM150_REGA_DIG_XYZ1_LSB); - /* Set the repetition in "Regular Preset" */ - raw_mag_write8(s->port, s->i2c_spi_addr_flags, - BMM150_REPXY, BMM150_REP(SPECIAL, XY)); - raw_mag_write8(s->port, s->i2c_spi_addr_flags, - BMM150_REPZ, BMM150_REP(SPECIAL, Z)); - ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REPXY, &val); - ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, - BMM150_REPZ, &val); + raw_mag_write8(s->port, s->i2c_spi_addr_flags, BMM150_REPXY, + BMM150_REP(SPECIAL, XY)); + raw_mag_write8(s->port, s->i2c_spi_addr_flags, BMM150_REPZ, + BMM150_REP(SPECIAL, Z)); + ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REPXY, &val); + ret = raw_mag_read8(s->port, s->i2c_spi_addr_flags, BMM150_REPZ, &val); /* * Set the compass forced mode, to sleep after each measure. */ - ret = raw_mag_write8(s->port, s->i2c_spi_addr_flags, - BMM150_OP_CTRL, + ret = raw_mag_write8(s->port, s->i2c_spi_addr_flags, BMM150_OP_CTRL, BMM150_OP_MODE_FORCED << BMM150_OP_MODE_OFFSET); init_mag_cal(moc); @@ -152,10 +144,8 @@ int bmm150_init(struct motion_sensor_t *s) return ret; } -void bmm150_temp_compensate_xy(const struct motion_sensor_t *s, - intv3_t raw, - intv3_t comp, - int r) +void bmm150_temp_compensate_xy(const struct motion_sensor_t *s, intv3_t raw, + intv3_t comp, int r) { int inter, axis; struct bmm150_comp_registers *regs = BMM150_COMP_REG(s); @@ -191,10 +181,8 @@ void bmm150_temp_compensate_xy(const struct motion_sensor_t *s, } } -void bmm150_temp_compensate_z(const struct motion_sensor_t *s, - intv3_t raw, - intv3_t comp, - int r) +void bmm150_temp_compensate_z(const struct motion_sensor_t *s, intv3_t raw, + intv3_t comp, int r) { int dividend, divisor; struct bmm150_comp_registers *regs = BMM150_COMP_REG(s); @@ -221,9 +209,7 @@ void bmm150_temp_compensate_z(const struct motion_sensor_t *s, comp[Z] = BMM150_OVERFLOW_OUTPUT; } -void bmm150_normalize(const struct motion_sensor_t *s, - intv3_t v, - uint8_t *data) +void bmm150_normalize(const struct motion_sensor_t *s, intv3_t v, uint8_t *data) { uint16_t r; intv3_t raw; @@ -247,8 +233,7 @@ void bmm150_normalize(const struct motion_sensor_t *s, v[Z] += cal->bias[Z]; } -int bmm150_set_offset(const struct motion_sensor_t *s, - const intv3_t offset) +int bmm150_set_offset(const struct motion_sensor_t *s, const intv3_t offset) { struct mag_cal_t *cal = BMM150_CAL(s); cal->bias[X] = offset[X]; @@ -257,8 +242,7 @@ int bmm150_set_offset(const struct motion_sensor_t *s, return EC_SUCCESS; } -int bmm150_get_offset(const struct motion_sensor_t *s, - intv3_t offset) +int bmm150_get_offset(const struct motion_sensor_t *s, intv3_t offset) { struct mag_cal_t *cal = BMM150_CAL(s); offset[X] = cal->bias[X]; |