/** * struct hid_sensor_hub_attribute_info - Attribute info * @usage_id: Parent usage id of a physical device. * @attrib_id: Attribute id for this attribute. * @report_id: Report id in which this information resides. * @index: Field index in the report. * @units: Measurement unit for this attribute. * @unit_expo: Exponent used in the data. * @size: Size in bytes for data size. * @logical_minimum: Logical minimum value for this attribute. * @logical_maximum: Logical maximum value for this attribute.
*/ struct hid_sensor_hub_attribute_info {
u32 usage_id;
u32 attrib_id;
s32 report_id;
s32 index;
s32 units;
s32 unit_expo;
s32 size;
s32 logical_minimum;
s32 logical_maximum;
};
/** * struct sensor_hub_pending - Synchronous read pending information * @status: Pending status true/false. * @ready: Completion synchronization data. * @usage_id: Usage id for physical device, e.g. gyro usage id. * @attr_usage_id: Usage Id of a field, e.g. X-axis for a gyro. * @raw_size: Response size for a read request. * @raw_data: Place holder for received response.
*/ struct sensor_hub_pending { bool status; struct completion ready;
u32 usage_id;
u32 attr_usage_id; int raw_size;
u8 *raw_data;
};
/** * struct hid_sensor_hub_device - Stores the hub instance data * @hdev: Stores the hid instance. * @vendor_id: Vendor id of hub device. * @product_id: Product id of hub device. * @usage: Usage id for this hub device instance. * @start_collection_index: Starting index for a phy type collection * @end_collection_index: Last index for a phy type collection * @mutex_ptr: synchronizing mutex pointer. * @pending: Holds information of pending sync read request.
*/ struct hid_sensor_hub_device { struct hid_device *hdev;
u32 vendor_id;
u32 product_id;
u32 usage; int start_collection_index; int end_collection_index; struct mutex *mutex_ptr; struct sensor_hub_pending pending;
};
/** * struct hid_sensor_hub_callbacks - Client callback functions * @pdev: Platform device instance of the client driver. * @suspend: Suspend callback. * @resume: Resume callback. * @capture_sample: Callback to get a sample. * @send_event: Send notification to indicate all samples are * captured, process and send event
*/ struct hid_sensor_hub_callbacks { struct platform_device *pdev; int (*suspend)(struct hid_sensor_hub_device *hsdev, void *priv); int (*resume)(struct hid_sensor_hub_device *hsdev, void *priv); int (*capture_sample)(struct hid_sensor_hub_device *hsdev,
u32 usage_id, size_t raw_len, char *raw_data, void *priv); int (*send_event)(struct hid_sensor_hub_device *hsdev, u32 usage_id, void *priv);
};
/** * sensor_hub_device_open() - Open hub device * @hsdev: Hub device instance. * * Used to open hid device for sensor hub.
*/ int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev);
/** * sensor_hub_device_close() - Close hub device * @hsdev: Hub device instance. * * Used to close hid device for sensor hub.
*/ void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev);
/* Registration functions */
/** * sensor_hub_register_callback() - Register client callbacks * @hsdev: Hub device instance. * @usage_id: Usage id of the client (E.g. 0x200076 for Gyro). * @usage_callback: Callback function storage * * Used to register callbacks by client processing drivers. Sensor * hub core driver will call these callbacks to offload processing * of data streams and notifications.
*/ int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
u32 usage_id, struct hid_sensor_hub_callbacks *usage_callback);
/** * sensor_hub_remove_callback() - Remove client callback * @hsdev: Hub device instance. * @usage_id: Usage id of the client (e.g. 0x200076 for gyro). * * Removes a previously registered callback for the given usage_id * and hsdev. Once removed, the client will no longer receive data or * event notifications.
*/ int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
u32 usage_id);
/* Hid sensor hub core interfaces */
/** * sensor_hub_input_get_attribute_info() - Get an attribute information * @hsdev: Hub device instance. * @type: Type of this attribute, input/output/feature * @usage_id: Attribute usage id of parent physical device as per spec * @attr_usage_id: Attribute usage id as per spec * @info: return information about attribute after parsing report * * Parses report and returns the attribute information such as report id, * field index, units and exponent etc.
*/ int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
u8 type,
u32 usage_id, u32 attr_usage_id, struct hid_sensor_hub_attribute_info *info);
/** * sensor_hub_input_attr_get_raw_value() - Synchronous read request * @hsdev: Hub device instance. * @usage_id: Attribute usage id of parent physical device as per spec * @attr_usage_id: Attribute usage id as per spec * @report_id: Report id to look for * @flag: Synchronous or asynchronous read * @is_signed: If true then fields < 32 bits will be sign-extended * * Issues a synchronous or asynchronous read request for an input attribute. * Return: data up to 32 bits.
*/
/** * sensor_hub_set_feature() - Feature set request * @hsdev: Hub device instance. * @report_id: Report id to look for * @field_index: Field index inside a report * @buffer_size: size of the buffer * @buffer: buffer to use in the feature set * * Used to set a field in feature report. For example this can set polling * interval, sensitivity, activate/deactivate state.
*/ int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
u32 field_index, int buffer_size, void *buffer);
/** * sensor_hub_get_feature() - Feature get request * @hsdev: Hub device instance. * @report_id: Report id to look for * @field_index: Field index inside a report * @buffer_size: size of the buffer * @buffer: buffer to copy output * * Used to get a field in feature report. For example this can get polling * interval, sensitivity, activate/deactivate state. * Return: On success, it returns the number of bytes copied to buffer. * On failure, it returns value < 0.
*/ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
u32 field_index, int buffer_size, void *buffer);
/* Convert from hid unit expo to regular exponent */ staticinlineint hid_sensor_convert_exponent(int unit_expo)
{ if (unit_expo < 0x08) return unit_expo; elseif (unit_expo <= 0x0f) return -(0x0f-unit_expo+1); else return 0;
}
int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
u32 usage_id, struct hid_sensor_common *st, const u32 *sensitivity_addresses,
u32 sensitivity_addresses_len); int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st, int val1, int val2); int hid_sensor_write_raw_hyst_rel_value(struct hid_sensor_common *st, int val1, int val2); int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st, int *val1, int *val2); int hid_sensor_read_raw_hyst_rel_value(struct hid_sensor_common *st, int *val1, int *val2); int hid_sensor_write_samp_freq_value(struct hid_sensor_common *st, int val1, int val2); int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st, int *val1, int *val2);
int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev,
u32 report_id, int field_index, u32 usage_id);
int hid_sensor_format_scale(u32 usage_id, struct hid_sensor_hub_attribute_info *attr_info, int *val0, int *val1);
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.