Hi All,
I am working on sensor driver for AMD platform and in our platform, firmware doesn't give data in HID format. So i am writing interface driver which makes
firmware data into HID Report format.Now i have taken reference from HID Usage document and i have created sample descriptor like this for accel 3d.
static const u8 HID_Sensor_ReportDesc_acc[]=
{
HID_USAGE_PAGE_SENSOR,
HID_USAGE_SENSOR_TYPE_MOTION_ACCELEROMETER_3D,
HID_COLLECTION(Physical),
//feature reports (xmit/receive)
HID_REPORT_ID(1),
HID_USAGE_PAGE_SENSOR,
HID_USAGE_SENSOR_PROPERTY_SENSOR_CONNECTION_TYPE, // NAry
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_8(2),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(1),
HID_COLLECTION(Logical),
HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_SEL,
HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_ATTACHED_SEL,
HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_EXTERNAL_SEL,
HID_FEATURE(Data_Arr_Abs),
HID_END_COLLECTION,
HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE,
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_8(5),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(1),
HID_COLLECTION(Logical),
HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE_NO_EVENTS_SEL,
HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE_ALL_EVENTS_SEL,
HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE_THRESHOLD_EVENTS_SEL,
HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE_NO_EVENTS_WAKE_SEL,
HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE_ALL_EVENTS_WAKE_SEL,
HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE_THRESHOLD_EVENTS_WAKE_SEL,
HID_FEATURE(Data_Arr_Abs),
HID_END_COLLECTION,
HID_USAGE_SENSOR_PROPERTY_POWER_STATE,
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_8(5),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(1),
HID_COLLECTION(Logical),
HID_USAGE_SENSOR_PROPERTY_POWER_STATE_UNDEFINED_SEL,
HID_USAGE_SENSOR_PROPERTY_POWER_STATE_D0_FULL_POWER_SEL,
HID_USAGE_SENSOR_PROPERTY_POWER_STATE_D1_LOW_POWER_SEL,
HID_USAGE_SENSOR_PROPERTY_POWER_STATE_D2_STANDBY_WITH_WAKE_SEL,
HID_USAGE_SENSOR_PROPERTY_POWER_STATE_D3_SLEEP_WITH_WAKE_SEL,
HID_USAGE_SENSOR_PROPERTY_POWER_STATE_D4_POWER_OFF_SEL,
HID_FEATURE(Data_Arr_Abs),
HID_END_COLLECTION,
HID_USAGE_SENSOR_STATE,
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_8(6),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(1),
HID_COLLECTION(Logical),
HID_USAGE_SENSOR_STATE_UNKNOWN_SEL,
HID_USAGE_SENSOR_STATE_READY_SEL,
HID_USAGE_SENSOR_STATE_NOT_AVAILABLE_SEL,
HID_USAGE_SENSOR_STATE_NO_DATA_SEL,
HID_USAGE_SENSOR_STATE_INITIALIZING_SEL,
HID_USAGE_SENSOR_STATE_ACCESS_DENIED_SEL,
HID_USAGE_SENSOR_STATE_ERROR_SEL,
HID_FEATURE(Data_Arr_Abs),
HID_END_COLLECTION,
HID_USAGE_SENSOR_PROPERTY_REPORT_INTERVAL,
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_32(0xFF,0xFF,0xFF,0xFF),
HID_REPORT_SIZE(32),
HID_REPORT_COUNT(1),
HID_UNIT_EXPONENT(0),
HID_FEATURE(Data_Var_Abs),
HID_USAGE_SENSOR_DATA(HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION,HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS),
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_16(0xFF,0xFF),
HID_REPORT_SIZE(16),
HID_REPORT_COUNT(1),
HID_UNIT_EXPONENT(0x0E), // scale default unit "G" to provide 2 digits past the decimal point
HID_FEATURE(Data_Var_Abs),
HID_USAGE_SENSOR_DATA(HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION,HID_USAGE_SENSOR_DATA_MOD_MAX),
HID_LOGICAL_MIN_16(0x01,0x80), // LOGICAL_MINIMUM (-32767)
HID_LOGICAL_MAX_16(0xFF,0x7F), // LOGICAL_MAXIMUM (32767)
HID_REPORT_SIZE(16),
HID_REPORT_COUNT(1),
HID_UNIT_EXPONENT(0x0E), // scale default unit "G" to provide 2 digits past the decimal point
HID_FEATURE(Data_Var_Abs),
HID_USAGE_SENSOR_DATA(HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION,HID_USAGE_SENSOR_DATA_MOD_MIN),
HID_LOGICAL_MIN_16(0x01,0x80), // LOGICAL_MINIMUM (-32767)
HID_LOGICAL_MAX_16(0xFF,0x7F), // LOGICAL_MAXIMUM (32767)
HID_REPORT_SIZE(16),
HID_REPORT_COUNT(1),
HID_UNIT_EXPONENT(0x0E), // scale default unit "G" to provide 2 digits past the decimal point
HID_FEATURE(Data_Var_Abs),
//input reports (transmit)
HID_USAGE_PAGE_SENSOR,
HID_USAGE_SENSOR_STATE,
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_8(6),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(1),
HID_COLLECTION(Logical),
HID_USAGE_SENSOR_STATE_UNKNOWN_SEL,
HID_USAGE_SENSOR_STATE_READY_SEL,
HID_USAGE_SENSOR_STATE_NOT_AVAILABLE_SEL,
HID_USAGE_SENSOR_STATE_NO_DATA_SEL,
HID_USAGE_SENSOR_STATE_INITIALIZING_SEL,
HID_USAGE_SENSOR_STATE_ACCESS_DENIED_SEL,
HID_USAGE_SENSOR_STATE_ERROR_SEL,
HID_INPUT(Data_Arr_Abs),
HID_END_COLLECTION,
HID_USAGE_SENSOR_EVENT,
HID_LOGICAL_MIN_8(0),
HID_LOGICAL_MAX_8(5),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(1),
HID_COLLECTION(Logical),
HID_USAGE_SENSOR_EVENT_UNKNOWN_SEL,
HID_USAGE_SENSOR_EVENT_STATE_CHANGED_SEL,
HID_USAGE_SENSOR_EVENT_PROPERTY_CHANGED_SEL,
HID_USAGE_SENSOR_EVENT_DATA_UPDATED_SEL,
HID_USAGE_SENSOR_EVENT_POLL_RESPONSE_SEL,
HID_USAGE_SENSOR_EVENT_CHANGE_SENSITIVITY_SEL,
HID_INPUT(Data_Arr_Abs),
HID_END_COLLECTION,
HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION_X_AXIS,
HID_LOGICAL_MIN_16(0x01,0x80), // LOGICAL_MINIMUM (-32767)
HID_LOGICAL_MAX_16(0xFF,0x7F), // LOGICAL_MAXIMUM (32767)
HID_REPORT_SIZE(16),
HID_REPORT_COUNT(1),
HID_UNIT_EXPONENT(0x0E), // scale default unit "G" to provide 2 digits past the decimal point
HID_INPUT(Data_Var_Abs),
HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION_Y_AXIS,
HID_LOGICAL_MIN_16(0x01,0x80), // LOGICAL_MINIMUM (-32767)
HID_LOGICAL_MAX_16(0xFF,0x7F), // LOGICAL_MAXIMUM (32767)
HID_REPORT_SIZE(16),
HID_REPORT_COUNT(1),
HID_UNIT_EXPONENT(0x0E), // scale default unit "G" to provide 2 digits past the decimal point
HID_INPUT(Data_Var_Abs),
HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION_Z_AXIS,
HID_LOGICAL_MIN_16(0x01,0x80), // LOGICAL_MINIMUM (-32767)
HID_LOGICAL_MAX_16(0xFF,0x7F), // LOGICAL_MAXIMUM (32767)
HID_REPORT_SIZE(16),
HID_REPORT_COUNT(1),
HID_UNIT_EXPONENT(0x0E), // scale default unit "G" to provide 2 digits past the decimal point
HID_INPUT(Data_Var_Abs),
//include the following datafield if required to support the shake event
HID_USAGE_SENSOR_DATA_MOTION_STATE,
HID_LOGICAL_MIN_8(0), // False = Still
HID_LOGICAL_MAX_8(1), // True = In Motion
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(1),
HID_INPUT(Data_Var_Abs),
HID_END_COLLECTION
};
for Feature report i have created following structure
struct accel3_feature_report
{
//common properties
u8 reportid;
u8 connectiontype;
u8 reportstate;
u8 powerstate;
u8 sensorstate;
u32 reportinterval;
//properties specific to this sensor
u16 accelsensitiity;
u16 accelmax;
u16 accelmin;
} ;
Can some one help me is this the correct way of going forward? With this i am getting request for feature report and i can see device in iio bus also but i am not getting call for input report. Please help me in this regards.
Thanks
Nehal Shah
