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core: Add subcommands to MOTION_SENSE_CMD

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These subcommands allow accessing sensor (accel+gyro)
over i2c.

BRANCH=ToT
BUG=chrome-os-partner:31071
TEST=Compile.

Change-Id: Ic6c3e9bf9c23f369de9f540c50daab7f2e4582ee
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/225653
This commit is contained in:
Gwendal Grignou
2014-10-27 09:55:45 -07:00
committed by chrome-internal-fetch
parent f3b29e3fec
commit d5b32aa6e1
2 changed files with 56 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
include/ec_commands.h
View File

@@ -1301,6 +1301,18 @@ enum motionsense_command {
*/
MOTIONSENSE_CMD_KB_WAKE_ANGLE = 5,
/*
* Sensor subsytem status.
* Same format as EC_MEMMAP_ACC_STATUS
* - for system without LPC -
*/
MOTIONSENSE_CMD_GET_STATUS = 6,
/*
* Retrieve data and flags from all accel/gyro sensors.
*/
MOTIONSENSE_CMD_GET_DATA = 7,
/* Number of motionsense sub-commands. */
MOTIONSENSE_NUM_CMDS
};
@@ -1351,10 +1363,10 @@ enum motionsensor_chip {
struct ec_params_motion_sense {
uint8_t cmd;
union {
/* Used for MOTIONSENSE_CMD_DUMP. */
/* Used for MOTIONSENSE_CMD_DUMP, GET_STATUS, GET_DATA. */
struct {
/* no args */
} dump;
} data, dump, status;
/*
* Used for MOTIONSENSE_CMD_EC_RATE and
@@ -1367,7 +1379,6 @@ struct ec_params_motion_sense {
/* Used for MOTIONSENSE_CMD_INFO. */
struct {
/* Should be element of enum motionsensor_id. */
uint8_t sensor_num;
} info;
@@ -1376,7 +1387,6 @@ struct ec_params_motion_sense {
* MOTIONSENSE_CMD_SENSOR_RANGE.
*/
struct {
/* Should be element of enum motionsensor_id. */
uint8_t sensor_num;
/* Rounding flag, true for round-up, false for down. */
@@ -1392,18 +1402,40 @@ struct ec_params_motion_sense {
struct ec_response_motion_sense {
union {
/* Used for MOTIONSENSE_CMD_DUMP. */
/* Used for MOTIONSENSE_CMD_DUMP */
struct {
/* Flags representing the motion sensor module. */
uint8_t module_flags;
/* Flags for each sensor in enum motionsensor_id. */
/* Flags for each sensor. */
uint8_t sensor_flags[EC_MOTION_SENSOR_COUNT];
/* Array of all sensor data. Each sensor is 3-axis. */
int16_t data[3*EC_MOTION_SENSOR_COUNT];
} dump;
/* Used for MOTIONSENSE_CMD_GET_DATA */
struct {
/* Flags representing the motion sensor module. */
uint8_t module_flags;
/* Number of sensors managed directly by the EC */
uint8_t sensor_number;
/*
* sensor data is truncated if response_max is too small
* for holding all the data.
*/
struct sensor_data {
/* Flags for each sensor. */
uint8_t flags;
uint8_t padding;
/* Each sensor is up to 3-axis. */
int16_t data[3];
} sensor[0];
} data;
/* Used for MOTIONSENSE_CMD_INFO. */
struct {
/* Should be element of enum motionsensor_type. */
@@ -1416,6 +1448,11 @@ struct ec_response_motion_sense {
uint8_t chip;
} info;
/* Used for MOTIONSENSE_CMD_GET_STATUS */
struct {
uint8_t value;
} status;
/*
* Used for MOTIONSENSE_CMD_EC_RATE, MOTIONSENSE_CMD_SENSOR_ODR,
* MOTIONSENSE_CMD_SENSOR_RANGE, and

13
util/ectool.c
View File

@@ -2323,6 +2323,17 @@ static int cmd_lightbar(int argc, char **argv)
sizeof(((struct ec_params_motion_sense *)0)->SUBCMD) \
+ sizeof(((struct ec_params_motion_sense *)0)->cmd), \
sizeof(((struct ec_response_motion_sense *)0)->SUBCMD) }
/*
* For ectool only, assume no more than 16 sensors.
* More advanced implementation would allocate the right amount of
* memory depending on the number of sensors.
*/
#define ECTOOL_MAX_SENSOR 16
#define MS_DATA_SIZE() { \
sizeof(((struct ec_params_motion_sense *)0)->data) \
+ sizeof(((struct ec_params_motion_sense *)0)->cmd), \
sizeof(((struct ec_response_motion_sense *)0)->data) \
+ ECTOOL_MAX_SENSOR * sizeof(struct sensor_data) }
static const struct {
uint8_t insize;
uint8_t outsize;
@@ -2333,6 +2344,8 @@ static const struct {
MS_SIZES(sensor_odr),
MS_SIZES(sensor_range),
MS_SIZES(kb_wake_angle),
MS_SIZES(status),
MS_DATA_SIZE(),
};
BUILD_ASSERT(ARRAY_SIZE(ms_command_sizes) == MOTIONSENSE_NUM_CMDS);
#undef MS_SIZES