iio: cros_ec_sensors_core: Add common functions for the ChromeOS EC Sensor Hub.

[thirdparty/linux.git] / include / linux / mfd / cros_ec_commands.h

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 76728ff37d019645ed51e1fa32967a7a4634d785..8826e0f64b0e0ec54b8d5474ae4012ae8f67b1fd 100644 (file)
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -1315,6 +1315,24 @@ enum motionsense_command {
         */
        MOTIONSENSE_CMD_KB_WAKE_ANGLE = 5,
 
+       /*
+        * Returns a single sensor data.
+        */
+       MOTIONSENSE_CMD_DATA = 6,
+
+       /*
+        * Perform low level calibration.. On sensors that support it, ask to
+        * do offset calibration.
+        */
+       MOTIONSENSE_CMD_PERFORM_CALIB = 10,
+
+       /*
+        * Sensor Offset command is a setter/getter command for the offset used
+        * for calibration. The offsets can be calculated by the host, or via
+        * PERFORM_CALIB command.
+        */
+       MOTIONSENSE_CMD_SENSOR_OFFSET = 11,
+
        /* Number of motionsense sub-commands. */
        MOTIONSENSE_NUM_CMDS
 };
@@ -1335,12 +1353,18 @@ enum motionsensor_id {
 enum motionsensor_type {
        MOTIONSENSE_TYPE_ACCEL = 0,
        MOTIONSENSE_TYPE_GYRO = 1,
+       MOTIONSENSE_TYPE_MAG = 2,
+       MOTIONSENSE_TYPE_PROX = 3,
+       MOTIONSENSE_TYPE_LIGHT = 4,
+       MOTIONSENSE_TYPE_ACTIVITY = 5,
+       MOTIONSENSE_TYPE_MAX
 };
 
 /* List of motion sensor locations. */
 enum motionsensor_location {
        MOTIONSENSE_LOC_BASE = 0,
        MOTIONSENSE_LOC_LID = 1,
+       MOTIONSENSE_LOC_MAX,
 };
 
 /* List of motion sensor chips. */
@@ -1361,6 +1385,31 @@ enum motionsensor_chip {
  */
 #define EC_MOTION_SENSE_NO_VALUE -1
 
+#define EC_MOTION_SENSE_INVALID_CALIB_TEMP 0x8000
+
+/* Set Calibration information */
+#define MOTION_SENSE_SET_OFFSET        1
+
+struct ec_response_motion_sensor_data {
+       /* Flags for each sensor. */
+       uint8_t flags;
+       /* Sensor number the data comes from */
+       uint8_t sensor_num;
+       /* Each sensor is up to 3-axis. */
+       union {
+               int16_t             data[3];
+               struct {
+                       uint16_t    rsvd;
+                       uint32_t    timestamp;
+               } __packed;
+               struct {
+                       uint8_t     activity; /* motionsensor_activity */
+                       uint8_t     state;
+                       int16_t     add_info[2];
+               };
+       };
+} __packed;
+
 struct ec_params_motion_sense {
        uint8_t cmd;
        union {
@@ -1378,9 +1427,37 @@ struct ec_params_motion_sense {
                        int16_t data;
                } ec_rate, kb_wake_angle;
 
+               /* Used for MOTIONSENSE_CMD_SENSOR_OFFSET */
+               struct {
+                       uint8_t sensor_num;
+
+                       /*
+                        * bit 0: If set (MOTION_SENSE_SET_OFFSET), set
+                        * the calibration information in the EC.
+                        * If unset, just retrieve calibration information.
+                        */
+                       uint16_t flags;
+
+                       /*
+                        * Temperature at calibration, in units of 0.01 C
+                        * 0x8000: invalid / unknown.
+                        * 0x0: 0C
+                        * 0x7fff: +327.67C
+                        */
+                       int16_t temp;
+
+                       /*
+                        * Offset for calibration.
+                        * Unit:
+                        * Accelerometer: 1/1024 g
+                        * Gyro:          1/1024 deg/s
+                        * Compass:       1/16 uT
+                        */
+                       int16_t offset[3];
+               } __packed sensor_offset;
+
                /* Used for MOTIONSENSE_CMD_INFO. */
                struct {
-                       /* Should be element of enum motionsensor_id. */
                        uint8_t sensor_num;
                } info;
 
@@ -1410,11 +1487,14 @@ struct ec_response_motion_sense {
                        /* Flags representing the motion sensor module. */
                        uint8_t module_flags;
 
-                       /* Flags for each sensor in enum motionsensor_id. */
-                       uint8_t sensor_flags[EC_MOTION_SENSOR_COUNT];
+                       /* Number of sensors managed directly by the EC. */
+                       uint8_t sensor_count;
 
-                       /* Array of all sensor data. Each sensor is 3-axis. */
-                       int16_t data[3*EC_MOTION_SENSOR_COUNT];
+                       /*
+                        * Sensor data is truncated if response_max is too small
+                        * for holding all the data.
+                        */
+                       struct ec_response_motion_sensor_data sensor[0];
                } dump;
 
                /* Used for MOTIONSENSE_CMD_INFO. */
@@ -1429,6 +1509,9 @@ struct ec_response_motion_sense {
                        uint8_t chip;
                } info;
 
+               /* Used for MOTIONSENSE_CMD_DATA */
+               struct ec_response_motion_sensor_data data;
+
                /*
                 * Used for MOTIONSENSE_CMD_EC_RATE, MOTIONSENSE_CMD_SENSOR_ODR,
                 * MOTIONSENSE_CMD_SENSOR_RANGE, and
@@ -1438,6 +1521,12 @@ struct ec_response_motion_sense {
                        /* Current value of the parameter queried. */
                        int32_t ret;
                } ec_rate, sensor_odr, sensor_range, kb_wake_angle;
+
+               /* Used for MOTIONSENSE_CMD_SENSOR_OFFSET */
+               struct {
+                       int16_t temp;
+                       int16_t offset[3];
+               } sensor_offset, perform_calib;
        };
 } __packed;