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Diffstat (limited to 'driver/sensorhub_lsm6dsm.c')
-rw-r--r--driver/sensorhub_lsm6dsm.c327
1 files changed, 0 insertions, 327 deletions
diff --git a/driver/sensorhub_lsm6dsm.c b/driver/sensorhub_lsm6dsm.c
deleted file mode 100644
index 371d8474f6..0000000000
--- a/driver/sensorhub_lsm6dsm.c
+++ /dev/null
@@ -1,327 +0,0 @@
-/* Copyright 2018 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.
- */
-
-/*
- * Sensor Hub Driver for LSM6DSM acce/gyro module to enable connecting
- * external sensors like magnetometer
- */
-
-#include "console.h"
-#include "driver/accelgyro_lsm6dsm.h"
-#include "driver/sensorhub_lsm6dsm.h"
-#include "driver/stm_mems_common.h"
-
-#define CPRINTF(format, args...) cprintf(CC_ACCEL, format, ## args)
-
-static int set_reg_bit_field(const struct motion_sensor_t *s,
- uint8_t reg, uint8_t bit_field)
-{
- int tmp;
- int ret;
-
- ret = st_raw_read8(s->port, s->i2c_spi_addr_flags, reg, &tmp);
- if (ret != EC_SUCCESS)
- return ret;
-
- tmp |= bit_field;
- return st_raw_write8(s->port, s->i2c_spi_addr_flags, reg, tmp);
-}
-
-static int clear_reg_bit_field(const struct motion_sensor_t *s,
- uint8_t reg, uint8_t bit_field)
-{
- int tmp;
- int ret;
-
- ret = st_raw_read8(s->port, s->i2c_spi_addr_flags, reg, &tmp);
- if (ret != EC_SUCCESS)
- return ret;
-
- tmp &= ~(bit_field);
- return st_raw_write8(s->port, s->i2c_spi_addr_flags, reg, tmp);
-}
-
-static inline int enable_sensorhub_func(const struct motion_sensor_t *s)
-{
- return set_reg_bit_field(s, LSM6DSM_CTRL10_ADDR,
- LSM6DSM_EMBED_FUNC_EN);
-}
-
-static inline int disable_sensorhub_func(const struct motion_sensor_t *s)
-{
- return clear_reg_bit_field(s, LSM6DSM_CTRL10_ADDR,
- LSM6DSM_EMBED_FUNC_EN);
-}
-
-/*
- * Sensor hub includes embedded register banks associated with external
- * sensors. 4 external sensor slaves can be attached to the sensor hub
- * and hence 4 such register banks exist. The access to them are disabled
- * by default. Below 2 helper functions help enable/disable access to those
- * register banks.
- */
-static inline int enable_ereg_bank_acc(const struct motion_sensor_t *s)
-{
- return set_reg_bit_field(s, LSM6DSM_FUNC_CFG_ACC_ADDR,
- LSM6DSM_FUNC_CFG_EN);
-}
-
-static inline int disable_ereg_bank_acc(const struct motion_sensor_t *s)
-{
- return clear_reg_bit_field(s, LSM6DSM_FUNC_CFG_ACC_ADDR,
- LSM6DSM_FUNC_CFG_EN);
-}
-
-static inline int enable_aux_i2c_master(const struct motion_sensor_t *s)
-{
- return set_reg_bit_field(s, LSM6DSM_MASTER_CFG_ADDR,
- LSM6DSM_I2C_MASTER_ON);
-}
-
-static inline int disable_aux_i2c_master(const struct motion_sensor_t *s)
-{
- return clear_reg_bit_field(s, LSM6DSM_MASTER_CFG_ADDR,
- LSM6DSM_I2C_MASTER_ON);
-}
-
-static inline int restore_master_cfg(const struct motion_sensor_t *s,
- int cache)
-{
- return st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_MASTER_CFG_ADDR, cache);
-}
-
-static int enable_i2c_pass_through(const struct motion_sensor_t *s,
- int *cache)
-{
- int ret;
-
- ret = st_raw_read8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_MASTER_CFG_ADDR, cache);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x MCR error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- /*
- * Fake set sensor hub to external trigger event and wait for 10ms.
- * Wait is for any pending bus activity(probably read) to settle down
- * so that there is no bus contention.
- */
- ret = st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_MASTER_CFG_ADDR,
- *cache | LSM6DSM_EXT_TRIGGER_EN);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x MCETEN error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
- msleep(10);
-
- ret = st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_MASTER_CFG_ADDR,
- *cache & ~(LSM6DSM_EXT_TRIGGER_EN
- | LSM6DSM_I2C_MASTER_ON));
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x MCC error ret: %d\n",
- __func__, s->name, s->type, ret);
- restore_master_cfg(s, *cache);
- return ret;
- }
-
- return st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_MASTER_CFG_ADDR, LSM6DSM_I2C_PASS_THRU_MODE);
-}
-
-static inline int power_down_accel(const struct motion_sensor_t *s,
- int *cache)
-{
- int ret;
-
- ret = st_raw_read8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_CTRL1_ADDR, cache);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x CTRL1R error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- return st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_CTRL1_ADDR,
- *cache & ~LSM6DSM_XL_ODR_MASK);
-}
-
-static inline int restore_ctrl1(const struct motion_sensor_t *s, int cache)
-{
- return st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_CTRL1_ADDR, cache);
-}
-
-static int config_slv0_read(const struct motion_sensor_t *s,
- const uint16_t slv_addr_flags,
- uint16_t reg, uint8_t len)
-{
- int ret;
- uint16_t addr_8bit = I2C_STRIP_FLAGS(slv_addr_flags) << 1;
-
- ret = st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_SLV0_ADD_ADDR,
- (addr_8bit | LSM6DSM_SLV0_RD_BIT));
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x SA error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- ret = st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_SLV0_SUBADD_ADDR, reg);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x RA error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- /*
- * No decimation for external sensor 0,
- * Number of sensors connected to external sensor hub 1
- */
- ret = st_raw_write8(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_SLV0_CONFIG_ADDR,
- (len & LSM6DSM_SLV0_NUM_OPS_MASK));
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x CFG error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- return EC_SUCCESS;
-}
-
-int sensorhub_config_ext_reg(const struct motion_sensor_t *s,
- const uint16_t slv_addr_flags,
- uint8_t reg, uint8_t val)
-{
- int ret;
- int tmp;
-
- ret = enable_i2c_pass_through(s, &tmp);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x ENI2C error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- ret = st_raw_write8(s->port, slv_addr_flags, reg, val);
- restore_master_cfg(s, tmp);
- return ret;
-}
-
-int sensorhub_config_slv0_read(const struct motion_sensor_t *s,
- uint16_t slv_addr_flags, uint8_t reg, int len)
-{
- int tmp_xl_cfg;
- int ret;
-
- if (len <= 0 || len > OUT_XYZ_SIZE) {
- CPRINTF("%s: %s type:0x%x Invalid length: %d\n",
- __func__, s->name, s->type, len);
- return EC_ERROR_INVAL;
- }
-
- ret = power_down_accel(s, &tmp_xl_cfg);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x PDXL error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- ret = enable_ereg_bank_acc(s);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x ENERB error ret: %d\n",
- __func__, s->name, s->type, ret);
- goto out_restore_ctrl1;
- }
-
- ret = config_slv0_read(s, slv_addr_flags, reg, len);
- disable_ereg_bank_acc(s);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x CS0R error ret: %d\n",
- __func__, s->name, s->type, ret);
- goto out_restore_ctrl1;
- }
-
- ret = enable_sensorhub_func(s);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x ENSH error ret: %d\n",
- __func__, s->name, s->type, ret);
- goto out_restore_ctrl1;
- }
-
- ret = enable_aux_i2c_master(s);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x ENI2CM error ret: %d\n",
- __func__, s->name, s->type, ret);
- disable_sensorhub_func(s);
- }
-out_restore_ctrl1:
- restore_ctrl1(s, tmp_xl_cfg);
- return ret;
-}
-
-int sensorhub_slv0_data_read(const struct motion_sensor_t *s, uint8_t *raw)
-{
- int ret;
-
- /*
- * Accel/Gyro is already reading slave 0 data into the sensorhub1
- * register as soon as the accel is in power-up mode. So return the
- * contents of that register.
- */
- ret = st_raw_read_n_noinc(s->port, s->i2c_spi_addr_flags,
- LSM6DSM_SENSORHUB1_REG,
- raw, OUT_XYZ_SIZE);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x SH1R error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
- return EC_SUCCESS;
-}
-
-int sensorhub_check_and_rst(const struct motion_sensor_t *s,
- const uint16_t slv_addr_flags,
- uint8_t whoami_reg, uint8_t whoami_val,
- uint8_t rst_reg, uint8_t rst_val)
-{
- int ret, tmp;
- int tmp_master_cfg;
-
- ret = enable_i2c_pass_through(s, &tmp_master_cfg);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x ENI2C error ret: %d\n",
- __func__, s->name, s->type, ret);
- return ret;
- }
-
- ret = st_raw_read8(s->port, slv_addr_flags, whoami_reg, &tmp);
- if (ret != EC_SUCCESS) {
- CPRINTF("%s: %s type:0x%x WAIR error ret: %d\n",
- __func__, s->name, s->type, ret);
- goto err_restore_master_cfg;
- }
-
- if (tmp != whoami_val) {
- CPRINTF("%s: %s type:0x%x WAIC error ret: %d\n",
- __func__, s->name, s->type, ret);
- ret = EC_ERROR_UNKNOWN;
- goto err_restore_master_cfg;
- }
-
- ret = st_raw_write8(s->port, slv_addr_flags, rst_reg, rst_val);
-err_restore_master_cfg:
- restore_master_cfg(s, tmp_master_cfg);
- return ret;
-}
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