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>

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 */