HID: sensors: introduce sensor framework
Adding processing for HID Sensor usage table as defined by
HID 1.12, Request #: HUTRR39, dated 05 May, 2011.
This driver uses HID driver framework to register, send and
receive events.
This uses MFD framework, so that actual processing for a
specific usage id can be done in a different driver. For
example an accelerometer driver can be a separate driver and
use the interface provided by this driver to register for
events.
Signed-off-by: srinivas pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
new file mode 100644
index 0000000..0aa5f4c
--- /dev/null
+++ b/include/linux/hid-sensor-hub.h
@@ -0,0 +1,160 @@
+/*
+ * HID Sensors Driver
+ * Copyright (c) 2012, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+#ifndef _HID_SENSORS_HUB_H
+#define _HID_SENSORS_HUB_H
+
+#include <linux/hid.h>
+#include <linux/hid-sensor-ids.h>
+
+/**
+ * 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: Measurment unit for this attribute.
+ * @unit_expo: Exponent used in the data.
+ * @size: Size in bytes for data size.
+ */
+struct hid_sensor_hub_attribute_info {
+ u32 usage_id;
+ u32 attrib_id;
+ s32 report_id;
+ s32 index;
+ s32 units;
+ s32 unit_expo;
+ s32 size;
+};
+
+/**
+ * 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.
+ */
+struct hid_sensor_hub_device {
+ struct hid_device *hdev;
+ u32 vendor_id;
+ u32 product_id;
+};
+
+/**
+ * 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);
+};
+
+/* 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 callbacks
+* @hsdev: Hub device instance.
+* @usage_id: Usage id of the client (E.g. 0x200076 for Gyro).
+*
+* If there is a callback registred, this call will remove that
+* callbacks, so that it will stop data and 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 exponet 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
+* @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
+*
+* Issues a synchronous read request for an input attribute. Returns
+* data upto 32 bits. Since client can get events, so this call should
+* not be used for data paths, this will impact performance.
+*/
+
+int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
+ u32 usage_id,
+ u32 attr_usage_id, u32 report_id);
+/**
+* sensor_hub_set_feature() - Feature set request
+* @report_id: Report id to look for
+* @field_index: Field index inside a report
+* @value: Value to 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, s32 value);
+
+/**
+* sensor_hub_get_feature() - Feature get request
+* @report_id: Report id to look for
+* @field_index: Field index inside a report
+* @value: Place holder for return value
+*
+* Used to get a field in feature report. For example this can get polling
+* interval, sensitivity, activate/deactivate state.
+*/
+int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
+ u32 field_index, s32 *value);
+#endif
diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
new file mode 100644
index 0000000..ca8d7e9
--- /dev/null
+++ b/include/linux/hid-sensor-ids.h
@@ -0,0 +1,112 @@
+/*
+ * HID Sensors Driver
+ * Copyright (c) 2012, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+#ifndef _HID_SENSORS_IDS_H
+#define _HID_SENSORS_IDS_H
+
+#define HID_UP_SENSOR 0x00200000
+#define HID_MAX_PHY_DEVICES 0xFF
+
+/* Accel 3D (200073) */
+#define HID_USAGE_SENSOR_ACCEL_3D 0x200073
+#define HID_USAGE_SENSOR_ACCEL_X_AXIS 0x200453
+#define HID_USAGE_SENSOR_ACCEL_Y_AXIS 0x200454
+#define HID_USAGE_SENSOR_ACCEL_Z_AXIS 0x200455
+
+/* ALS (200041) */
+#define HID_USAGE_SENSOR_ALS 0x200041
+#define HID_USAGE_SENSOR_LIGHT_ILLUM 0x2004d1
+
+/* Gyro 3D: (200076) */
+#define HID_USAGE_SENSOR_GYRO_3D 0x200076
+#define HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS 0x200457
+#define HID_USAGE_SENSOR_ANGL_VELOCITY_Y_AXIS 0x200458
+#define HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS 0x200459
+
+/*ORIENTATION: Compass 3D: (200083) */
+#define HID_USAGE_SENSOR_COMPASS_3D 0x200083
+#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING 0x200471
+#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_X 0x200472
+#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_Y 0x200473
+#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_Z 0x200474
+
+#define HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH 0x200475
+#define HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH 0x200476
+#define HID_USAGE_SENSOR_ORIENT_MAGN_NORTH 0x200477
+#define HID_USAGE_SENSOR_ORIENT_TRUE_NORTH 0x200478
+
+#define HID_USAGE_SENSOR_ORIENT_DISTANCE 0x200479
+#define HID_USAGE_SENSOR_ORIENT_DISTANCE_X 0x20047A
+#define HID_USAGE_SENSOR_ORIENT_DISTANCE_Y 0x20047B
+#define HID_USAGE_SENSOR_ORIENT_DISTANCE_Z 0x20047C
+#define HID_USAGE_SENSOR_ORIENT_DISTANCE_OUT_OF_RANGE 0x20047D
+#define HID_USAGE_SENSOR_ORIENT_TILT 0x20047E
+#define HID_USAGE_SENSOR_ORIENT_TILT_X 0x20047F
+#define HID_USAGE_SENSOR_ORIENT_TILT_Y 0x200480
+#define HID_USAGE_SENSOR_ORIENT_TILT_Z 0x200481
+#define HID_USAGE_SENSOR_ORIENT_ROTATION_MATRIX 0x200482
+#define HID_USAGE_SENSOR_ORIENT_QUATERNION 0x200483
+#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX 0x200484
+
+#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS 0x200485
+#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS 0x200486
+#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS 0x200487
+
+/* Units */
+#define HID_USAGE_SENSOR_UNITS_NOT_SPECIFIED 0x00
+#define HID_USAGE_SENSOR_UNITS_LUX 0x01
+#define HID_USAGE_SENSOR_UNITS_KELVIN 0x01000100
+#define HID_USAGE_SENSOR_UNITS_FAHRENHEIT 0x03000100
+#define HID_USAGE_SENSOR_UNITS_PASCAL 0xF1E1
+#define HID_USAGE_SENSOR_UNITS_NEWTON 0x11E1
+#define HID_USAGE_SENSOR_UNITS_METERS_PER_SECOND 0x11F0
+#define HID_USAGE_SENSOR_UNITS_METERS_PER_SEC_SQRD 0x11E0
+#define HID_USAGE_SENSOR_UNITS_FARAD 0xE14F2000
+#define HID_USAGE_SENSOR_UNITS_AMPERE 0x01001000
+#define HID_USAGE_SENSOR_UNITS_WATT 0x21d1
+#define HID_USAGE_SENSOR_UNITS_HENRY 0x21E1E000
+#define HID_USAGE_SENSOR_UNITS_OHM 0x21D1E000
+#define HID_USAGE_SENSOR_UNITS_VOLT 0x21D1F000
+#define HID_USAGE_SENSOR_UNITS_HERTZ 0x01F0
+#define HID_USAGE_SENSOR_UNITS_DEGREES_PER_SEC_SQRD 0x14E0
+#define HID_USAGE_SENSOR_UNITS_RADIANS 0x12
+#define HID_USAGE_SENSOR_UNITS_RADIANS_PER_SECOND 0x12F0
+#define HID_USAGE_SENSOR_UNITS_RADIANS_PER_SEC_SQRD 0x12E0
+#define HID_USAGE_SENSOR_UNITS_SECOND 0x0110
+#define HID_USAGE_SENSOR_UNITS_GAUSS 0x01E1F000
+#define HID_USAGE_SENSOR_UNITS_GRAM 0x0101
+#define HID_USAGE_SENSOR_UNITS_CENTIMETER 0x11
+#define HID_USAGE_SENSOR_UNITS_G 0x1A
+#define HID_USAGE_SENSOR_UNITS_MILLISECOND 0x19
+#define HID_USAGE_SENSOR_UNITS_PERCENT 0x17
+#define HID_USAGE_SENSOR_UNITS_DEGREES 0x14
+#define HID_USAGE_SENSOR_UNITS_DEGREES_PER_SECOND 0x15
+
+/* Common selectors */
+#define HID_USAGE_SENSOR_PROP_REPORT_INTERVAL 0x20030E
+#define HID_USAGE_SENSOR_PROP_SENSITIVITY_ABS 0x20030F
+#define HID_USAGE_SENSOR_PROP_SENSITIVITY_RANGE_PCT 0x200310
+#define HID_USAGE_SENSOR_PROP_SENSITIVITY_REL_PCT 0x200311
+#define HID_USAGE_SENSOR_PROP_ACCURACY 0x200312
+#define HID_USAGE_SENSOR_PROP_RESOLUTION 0x200313
+#define HID_USAGE_SENSOR_PROP_RANGE_MAXIMUM 0x200314
+#define HID_USAGE_SENSOR_PROP_RANGE_MINIMUM 0x200315
+#define HID_USAGE_SENSOR_PROP_REPORT_STATE 0x200316
+#define HID_USAGE_SENSOR_PROY_POWER_STATE 0x200319
+
+#endif