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author | Bhanu Prakash Maiya <bhanumaiya@google.com> | 2021-06-22 21:33:33 -0700 |
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committer | Commit Bot <commit-bot@chromium.org> | 2021-06-28 23:31:49 +0000 |
commit | 1d235e9f8e6dbc5588a32f2b0f563f11a74bfe04 (patch) | |
tree | 12114cac072f6b1d87534c87dcfdcdd3eed361ea /driver/accel_bma4xx.h | |
parent | bca2d153c7710465541b19610d98f00dba39b44e (diff) | |
download | chrome-ec-1d235e9f8e6dbc5588a32f2b0f563f11a74bfe04.tar.gz |
driver: bma4xx: Add support for BMA422 sensor
BMA422 is one of BMA4XX series accel sensor series.
Adding defines, driver from Bosch APIs based initial patches
submitted by Bosch team members in crrev/c/2894333.
Reference code can be found on
https://github.com/BoschSensortec/BMA423-Sensor-API.
BRANCH=none
BUG=b:178400750
TEST=Accel implementation tested on Guybrush
EC commands:
> accelinfo
> acceldata
Signed-off-by: Bhanu Prakash Maiya <bhanumaiya@chromium.org>
Change-Id: I8117283e54980379989fb01f68c29b7d6c501eca
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2981465
Tested-by: Bhanu Prakash Maiya <bhanumaiya@google.com>
Auto-Submit: Bhanu Prakash Maiya <bhanumaiya@google.com>
Commit-Queue: Rob Barnes <robbarnes@google.com>
Reviewed-by: Rob Barnes <robbarnes@google.com>
Diffstat (limited to 'driver/accel_bma4xx.h')
-rw-r--r-- | driver/accel_bma4xx.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/driver/accel_bma4xx.h b/driver/accel_bma4xx.h new file mode 100644 index 0000000000..72c8265241 --- /dev/null +++ b/driver/accel_bma4xx.h @@ -0,0 +1,153 @@ +/* Copyright 2021 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. + */ + +/* BMA4XX gsensor module for Chrome EC */ + +#ifndef __CROS_EC_ACCEL_BMA4XX_H +#define __CROS_EC_ACCEL_BMA4XX_H + +#define BMA4_I2C_ADDR_PRIMARY 0x18 +#define BMA4_I2C_ADDR_SECONDARY 0x19 +#define BMA4_I2C_BMM150_ADDR 0x10 + +/* Chip-specific registers */ +#define BMA4_CHIP_ID_ADDR 0x00 +#define BMA4_CHIP_ID_MIN 0x10 +#define BMA4_CHIP_ID_MAX 0x15 + +#define BMA4_ERROR_ADDR 0x02 +#define BMA4_FATAL_ERR_MSK 0x01 +#define BMA4_CMD_ERR_POS 1 +#define BMA4_CMD_ERR_MSK 0x02 +#define BMA4_ERR_CODE_POS 2 +#define BMA4_ERR_CODE_MSK 0x1C +#define BMA4_FIFO_ERR_POS 6 +#define BMA4_FIFO_ERR_MSK 0x40 +#define BMA4_AUX_ERR_POS 7 +#define BMA4_AUX_ERR_MSK 0x80 + +#define BMA4_STATUS_ADDR 0x03 +#define BMA4_STAT_DATA_RDY_ACCEL_POS 7 +#define BMA4_STAT_DATA_RDY_ACCEL_MSK 0x80 + +#define BMA4_DATA_0_ADDR 0x0A +#define BMA4_DATA_8_ADDR 0x12 + +#define BMA4_SENSORTIME_0_ADDR 0x18 +#define BMA4_INT_STAT_0_ADDR 0x1C +#define BMA4_INT_STAT_1_ADDR 0x1D +#define BMA4_STEP_CNT_OUT_0_ADDR 0x1E +#define BMA4_HIGH_G_OUT_ADDR 0x1F +#define BMA4_TEMPERATURE_ADDR 0x22 + +#define BMA4_FIFO_LENGTH_0_ADDR 0x24 +#define BMA4_FIFO_DATA_ADDR 0x26 +#define BMA4_ACTIVITY_OUT_ADDR 0x27 +#define BMA4_ORIENTATION_OUT_ADDR 0x28 + +#define BMA4_INTERNAL_STAT 0x2A +#define BMA4_ASIC_INITIALIZED 0x01 + +#define BMA4_ACCEL_CONFIG_ADDR 0x40 +#define BMA4_ACCEL_ODR_MSK 0x0F +#define BMA4_ACCEL_BW_POS 4 +#define BMA4_ACCEL_BW_MSK 0x70 +#define BMA4_ACCEL_PERFMODE_POS 7 +#define BMA4_ACCEL_PERFMODE_MSK 0x80 +#define BMA4_OUTPUT_DATA_RATE_0_78HZ 0x01 +#define BMA4_OUTPUT_DATA_RATE_1_56HZ 0x02 +#define BMA4_OUTPUT_DATA_RATE_3_12HZ 0x03 +#define BMA4_OUTPUT_DATA_RATE_6_25HZ 0x04 +#define BMA4_OUTPUT_DATA_RATE_12_5HZ 0x05 +#define BMA4_OUTPUT_DATA_RATE_25HZ 0x06 +#define BMA4_OUTPUT_DATA_RATE_50HZ 0x07 +#define BMA4_OUTPUT_DATA_RATE_100HZ 0x08 +#define BMA4_OUTPUT_DATA_RATE_200HZ 0x09 +#define BMA4_OUTPUT_DATA_RATE_400HZ 0x0A +#define BMA4_OUTPUT_DATA_RATE_800HZ 0x0B +#define BMA4_OUTPUT_DATA_RATE_1600HZ 0x0C +#define BMA4_ACCEL_OSR4_AVG1 0 +#define BMA4_ACCEL_OSR2_AVG2 1 +#define BMA4_ACCEL_NORMAL_AVG4 2 +#define BMA4_ACCEL_CIC_AVG8 3 +#define BMA4_ACCEL_RES_AVG16 4 +#define BMA4_ACCEL_RES_AVG32 5 +#define BMA4_ACCEL_RES_AVG64 6 +#define BMA4_ACCEL_RES_AVG128 7 +#define BMA4_CIC_AVG_MODE 0 +#define BMA4_CONTINUOUS_MODE 1 + +#define BMA4_ACCEL_RANGE_ADDR 0x41 +#define BMA4_ACCEL_RANGE_MSK 0x03 +#define BMA4_ACCEL_RANGE_2G 0 +#define BMA4_ACCEL_RANGE_4G 1 +#define BMA4_ACCEL_RANGE_8G 2 +#define BMA4_ACCEL_RANGE_16G 3 + +#define BMA4_RESERVED_REG_5B_ADDR 0x5B +#define BMA4_RESERVED_REG_5C_ADDR 0x5C +#define BMA4_FEATURE_CONFIG_ADDR 0x5E +#define BMA4_INTERNAL_ERROR 0x5F +#define BMA4_IF_CONFIG_ADDR 0x6B +#define BMA4_FOC_ACC_CONF_VAL 0xB7 + +#define BMA4_NV_CONFIG_ADDR 0x70 +#define BMA4_NV_ACCEL_OFFSET_POS 3 +#define BMA4_NV_ACCEL_OFFSET_MSK 0x08 + +#define BMA4_OFFSET_0_ADDR 0x71 +#define BMA4_OFFSET_1_ADDR 0x72 +#define BMA4_OFFSET_2_ADDR 0x73 + +#define BMA4_POWER_CONF_ADDR 0x7C +#define BMA4_ADVANCE_POWER_SAVE_MSK 0x01 + +#define BMA4_POWER_CTRL_ADDR 0x7D +#define BMA4_ACCEL_ENABLE_POS 2 +#define BMA4_ACCEL_ENABLE_MSK 0x04 +#define BMA4_ENABLE 0x01 +#define BMA4_DISABLE 0x00 + +#define BMA4_POWER_ACC_EC_MASK 0x4 + +#define BMA4_CMD_ADDR 0x7E +#define BMA4_NVM_PROG 0xA0 +#define BMA4_FIFO_FLUSH 0xB0 +#define BMA4_SOFT_RESET 0xB6 + +/* Other definitions */ +#define BMA4_X_AXIS 0 +#define BMA4_Y_AXIS 1 +#define BMA4_Z_AXIS 2 + +#define BMA4_12_BIT_RESOLUTION 12 +#define BMA4_14_BIT_RESOLUTION 14 +#define BMA4_16_BIT_RESOLUTION 16 + +/* Min and Max sampling frequency in mHz */ +#define BMA4_ACCEL_MIN_FREQ 12500 +#define BMA4_ACCEL_MAX_FREQ MOTION_MAX_SENSOR_FREQUENCY(1600000, 6250) + +#define BMA4_RANGE_TO_REG(_range) \ + ((_range) < 8 ? BMA4_ACCEL_RANGE_2G + ((_range) / 4) : \ + BMA4_ACCEL_RANGE_8G + ((_range) / 16)) + +#define BMA4_REG_TO_RANGE(_reg) \ + ((_reg) < BMA4_ACCEL_RANGE_8G ? 2 + (_reg) * 2 : \ + 8 + ((_reg) - BMA4_ACCEL_RANGE_8G) * 8) + +#define BMA4_ODR_TO_REG(_odr) \ + ((_odr) < 125000 ? \ + BMA4_OUTPUT_DATA_RATE_0_78HZ + __fls(((_odr) * 10) / 7800) : \ + BMA4_OUTPUT_DATA_RATE_25HZ + __fls((_odr) / 25000)) + +#define BMA4_REG_TO_ODR(_reg) \ + ((_reg) < BMA4_OUTPUT_DATA_RATE_25HZ ? \ + (7800 << ((_reg) - BMA4_OUTPUT_DATA_RATE_0_78HZ)) / 10 : \ + 25000 << ((_reg) - BMA4_OUTPUT_DATA_RATE_25HZ)) + +extern const struct accelgyro_drv bma4_accel_drv; + +#endif /* __CROS_EC_ACCEL_BMA4XX_H */ |