diff options
Diffstat (limited to 'zephyr/shim/src/motionsense_sensors.c')
| -rw-r--r-- | zephyr/shim/src/motionsense_sensors.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/zephyr/shim/src/motionsense_sensors.c b/zephyr/shim/src/motionsense_sensors.c index 9e8eef6f6f..bba38e9eec 100644 --- a/zephyr/shim/src/motionsense_sensors.c +++ b/zephyr/shim/src/motionsense_sensors.c @@ -4,6 +4,7 @@ */ #include "common.h" +#include "accelgyro.h" #define SENSOR_MUTEX_NODE DT_PATH(motionsense_mutex) #define SENSOR_MUTEX_NAME(id) DT_CAT(MUTEX_, id) @@ -57,3 +58,57 @@ SYS_INIT(init_sensor_mutex, POST_KERNEL, 50); #if DT_NODE_EXISTS(SENSOR_ROT_REF_NODE) DT_FOREACH_CHILD(SENSOR_ROT_REF_NODE, DECLARE_SENSOR_ROT_REF) #endif + +/* + * Declare sensor driver data for + * each child node with status = "okay" of + * "/motionsense-sensor-data" node in DT. + * + * A driver data can be shared among the motion sensors. + */ +#define SENSOR_DATA_NAME(id) DT_CAT(SENSOR_DAT_, id) +#define SENSOR_DATA_NODE DT_PATH(motionsense_sensor_data) + +#define SENSOR_DATA(inst, compat, create_data_macro) \ + create_data_macro(DT_INST(inst, compat), \ + SENSOR_DATA_NAME(DT_INST(inst, compat))) + +/* + * CREATE_SENSOR_DATA is a helper macro that gets + * compat and create_data_macro as parameters. + * + * For each node with compatible = "compat", + * CREATE_SENSOR_DATA expands "create_data_macro" macro with the node id and + * the designated name for the sensor driver data to be created. The + * "create_datda_macro" macro is responsible for creating the sensor driver + * data with the name. + * + * Sensor drivers should provide <chip>-drvinfo.inc file and, in the file, + * it should have the macro that creates its sensor driver data using device + * tree and pass the macro via CREATE_SENSOR_DATA. + * + * e.g) The below is contents of tcs3400-drvinfo.inc file. The file has + * CREATE_SENSOR_DATA_TCS3400_CLEAR that creates the static instance of + * "struct als_drv_data_t" with the given name and initializes it + * with device tree. Then use CREATE_SENSOR_DATA. + * + * ----------- bma255-drvinfo.inc ----------- + * #define CREATE_SENSOR_DATA_TCS3400_CLEAR(id, drvdata_name) \ + * static struct als_drv_data_t drvdata_name = \ + * ACCELGYRO_ALS_DRV_DATA(DT_CHILD(id, als_drv_data)); + * + * CREATE_SENSOR_DATA(cros_ec_drvdata_tcs3400_clear, \ + * CREATE_SENSOR_DATA_TCS3400_CLEAR) + */ +#define CREATE_SENSOR_DATA(compat, create_data_macro) \ + UTIL_LISTIFY(DT_NUM_INST_STATUS_OKAY(compat), SENSOR_DATA, \ + compat, create_data_macro) + +/* + * Here, we declare all sensor driver data. How to create the data is + * defined in <chip>-drvinfo.inc file and ,in turn, the file is included + * in sensor_drv_list.inc. + */ +#if DT_NODE_EXISTS(SENSOR_DATA_NODE) +#include "motionsense_driver/sensor_drv_list.inc" +#endif |