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Diffstat (limited to 'zephyr/shim/include/motionsense_sensors_defs.h')
| -rw-r--r-- | zephyr/shim/include/motionsense_sensors_defs.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/zephyr/shim/include/motionsense_sensors_defs.h b/zephyr/shim/include/motionsense_sensors_defs.h new file mode 100644 index 0000000000..ec2180566e --- /dev/null +++ b/zephyr/shim/include/motionsense_sensors_defs.h @@ -0,0 +1,103 @@ +/* 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. + */ + +#ifndef __CROS_EC_MOTIONSENSE_SENSORS_DEFS_H +#define __CROS_EC_MOTIONSENSE_SENSORS_DEFS_H + +#include <devicetree.h> + +#define SENSOR_NODE DT_PATH(motionsense_sensor) +#define SENSOR_INFO_NODE DT_PATH(motionsense_sensor_info) +#define SENSOR_ALT_NODE DT_PATH(motionsense_sensor_alt) + +#define SENSOR_ID(id) DT_CAT(SENSOR_, id) + +/* Define the SENSOR_ID if: + * DT_NODE_HAS_STATUS(id, okay) && !DT_NODE_HAS_PROP(id, alternate_for) + */ +#define SENSOR_ID_WITH_COMMA(id) \ + IF_ENABLED(DT_NODE_HAS_STATUS(id, okay), \ + (COND_CODE_0(DT_NODE_HAS_PROP(id, alternate_for), \ + (SENSOR_ID(id), ), ()))) + +enum sensor_id { +#if DT_NODE_EXISTS(SENSOR_NODE) + DT_FOREACH_CHILD(SENSOR_NODE, SENSOR_ID_WITH_COMMA) +#endif + SENSOR_COUNT, +}; + +#undef SENSOR_ID_WITH_COMMA +/* Define the SENSOR_ID if: + * DT_NODE_HAS_STATUS(id, okay) && DT_NODE_HAS_PROP(id, alternate_for) + */ +#define SENSOR_ID_WITH_COMMA(id) \ + IF_ENABLED(DT_NODE_HAS_STATUS(id, okay), \ + (COND_CODE_1(DT_NODE_HAS_PROP(id, alternate_for), \ + (SENSOR_ID(id), ), ()))) +enum sensor_alt_id { +#if DT_NODE_EXISTS(SENSOR_ALT_NODE) + DT_FOREACH_CHILD(SENSOR_ALT_NODE, SENSOR_ID_WITH_COMMA) +#endif + SENSOR_ALT_COUNT, +}; + +/* + * Find the accelerometers for lid angle calculation. + * + * The angle calculation requires two accelerometers. One is on the lid + * and the other one is on the base. So we need to specify which sensor is + * on the lid and which one is on the base. We use two labels "lid_accel" + * and "base_accel". + * + * base_accel - label for the accelerometer sensor on the base. + * lid_accel - label for the accelerometer sensor on the lid. + * + * e.g) below shows BMA255 is the accelerometer on the lid and bmi260 is + * the accelerometer on the base. + * + * motionsense-sensor { + * lid_accel: lid-accel { + * compatible = "cros-ec,bma255"; + * status = "okay"; + * : + * : + * }; + * + * base_accel: base-accel { + * compatible = "cros-ec,bmi260"; + * status = "okay"; + * : + * : + * }; + * }; + */ +#ifdef CONFIG_LID_ANGLE +#define CONFIG_LID_ANGLE_SENSOR_LID SENSOR_ID(DT_NODELABEL(lid_accel)) +#define CONFIG_LID_ANGLE_SENSOR_BASE SENSOR_ID(DT_NODELABEL(base_accel)) +#endif + +/* + * Get the sensors running in force mode from DT and create a bit mask for it. + * + * e.g) lid accel and als_clear are in accel_force_mode. The macro below finds + * the corresponding bit for each sensor in bit mask and set it. + * motionsense-sensor-info { + * compatible = "cros-ec,motionsense-sensor-info"; + * + * // list of sensors in force mode + * accel-force-mode-sensors = <&lid_accel &als_clear>; + * }; + */ +#if DT_NODE_HAS_PROP(SENSOR_INFO_NODE, accel_force_mode_sensors) +#define SENSOR_IN_FORCE_MODE(i, id) \ + | BIT(SENSOR_ID(DT_PHANDLE_BY_IDX(id, accel_force_mode_sensors, i))) +#define CONFIG_ACCEL_FORCE_MODE_MASK \ + (0 UTIL_LISTIFY(DT_PROP_LEN(SENSOR_INFO_NODE, \ + accel_force_mode_sensors), SENSOR_IN_FORCE_MODE, \ + SENSOR_INFO_NODE)) +#endif + +#endif /* __CROS_EC_MOTIONSENSE_SENSORS_DEFS_H */ |