sensors: add the sensors class support
Add a new sensors sysfs class and put all the sensors
device driver information in sensor class folder.
Change-Id: I141e79aee337d8a63998b5b5a4890b6eb6d1c4e4
Signed-off-by: Ananda Kishore <kananda@codeaurora.org>
diff --git a/include/linux/sensors.h b/include/linux/sensors.h
new file mode 100644
index 0000000..85dcbfc
--- /dev/null
+++ b/include/linux/sensors.h
@@ -0,0 +1,168 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that 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.
+ */
+
+#ifndef __LINUX_SENSORS_H_INCLUDED
+#define __LINUX_SENSORS_H_INCLUDED
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/rwsem.h>
+
+#define SENSORS_ACCELERATION_HANDLE 0
+#define SENSORS_MAGNETIC_FIELD_HANDLE 1
+#define SENSORS_ORIENTATION_HANDLE 2
+#define SENSORS_LIGHT_HANDLE 3
+#define SENSORS_PROXIMITY_HANDLE 4
+#define SENSORS_GYROSCOPE_HANDLE 5
+#define SENSORS_PRESSURE_HANDLE 6
+
+#define SENSOR_TYPE_ACCELEROMETER 1
+#define SENSOR_TYPE_GEOMAGNETIC_FIELD 2
+#define SENSOR_TYPE_MAGNETIC_FIELD SENSOR_TYPE_GEOMAGNETIC_FIELD
+#define SENSOR_TYPE_ORIENTATION 3
+#define SENSOR_TYPE_GYROSCOPE 4
+#define SENSOR_TYPE_LIGHT 5
+#define SENSOR_TYPE_PRESSURE 6
+#define SENSOR_TYPE_TEMPERATURE 7
+#define SENSOR_TYPE_PROXIMITY 8
+#define SENSOR_TYPE_GRAVITY 9
+#define SENSOR_TYPE_LINEAR_ACCELERATION 10
+#define SENSOR_TYPE_ROTATION_VECTOR 11
+#define SENSOR_TYPE_RELATIVE_HUMIDITY 12
+#define SENSOR_TYPE_AMBIENT_TEMPERATURE 13
+#define SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED 14
+#define SENSOR_TYPE_GAME_ROTATION_VECTOR 15
+#define SENSOR_TYPE_GYROSCOPE_UNCALIBRATED 16
+#define SENSOR_TYPE_SIGNIFICANT_MOTION 17
+#define SENSOR_TYPE_STEP_DETECTOR 18
+#define SENSOR_TYPE_STEP_COUNTER 19
+#define SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR 20
+
+enum LIS3DH_AXIS {
+ AXIS_X = 0,
+ AXIS_Y,
+ AXIS_Z,
+ AXIS_XYZ,
+};
+
+enum LIS3DH_THRES {
+ AXIS_THRESHOLD_H = 0,
+ AXIS_THRESHOLD_L,
+ AXIS_BIAS,
+};
+
+#define AXIS_FACTOR 0
+#define AXIS_OFFSET 1
+
+
+struct cal_result_t {
+ union {
+
+ struct {
+ int offset_x; /*axis offset of x axis*/
+ int offset_y; /*axis offset of x axis*/
+ int offset_z; /*axis offset of x axis*/
+ };
+ struct {
+ int threshold_h; /*proximity threshold_h*/
+ int threshold_l; /*proximity threshold_l*/
+ int bias; /*proximity measure data noise*/
+ };
+ int offset[3];
+ };
+ int factor; /*light sensor factor for real ligt strength*/
+ int range;
+ struct cal_result_t *node;
+};
+
+/**
+ * struct sensors_classdev - hold the sensor general parameters and APIs
+ * @dev: The device to register.
+ * @node: The list for the all the sensor drivers.
+ * @name: Name of this sensor.
+ * @vendor: The vendor of the hardware part.
+ * @handle: The handle that identifies this sensors.
+ * @type: The sensor type.
+ * @max_range: The maximum range of this sensor's value in SI units.
+ * @resolution: The smallest difference between two values reported by
+ * this sensor.
+ * @sensor_power: The rough estimate of this sensor's power consumption
+ * in mA.
+ * @min_delay: This value depends on the trigger mode:
+ * continuous: minimum period allowed in microseconds
+ * on-change : 0
+ * one-shot :-1
+ * special : 0, unless otherwise noted
+ * @fifo_reserved_event_count: The number of events reserved for this sensor
+ * in the batch mode FIFO.
+ * @fifo_max_event_count: The maximum number of events of this sensor
+ * that could be batched.
+ * @max_delay: The slowest rate the sensor supports in millisecond.
+ * @flags: Should be '1' if the sensor is a wake up sensor.
+ * set it to '0' otherwise.
+ * @enabled: Store the sensor driver enable status.
+ * @delay_msec: Store the sensor driver delay value. The data unit is
+ * millisecond.
+ * @wakeup: Indicate if the wake up interrupt has been enabled.
+ * @max_latency: Max report latency in millisecond
+ * @sensors_enable: The handle for enable and disable sensor.
+ * @sensors_poll_delay: The handle for set the sensor polling delay time.
+ * @sensors_set_latency:Set the max report latency of the sensor.
+ * @sensors_flush: Flush sensor events in FIFO and report it to user space.
+ * @params The sensor calibrate string format params up to userspace.
+ * @cal_result The sensor calibrate parameters, cal_result is a struct for sensor.
+ */
+struct sensors_classdev {
+ struct device *dev;
+ struct list_head node;
+ const char *name;
+ const char *vendor;
+ int version;
+ int handle;
+ int type;
+ const char *max_range;
+ const char *resolution;
+ const char *sensor_power;
+ int min_delay;
+ int fifo_reserved_event_count;
+ int fifo_max_event_count;
+ int32_t max_delay;
+ uint32_t flags;
+
+ unsigned int enabled;
+ unsigned int delay_msec;
+ unsigned int wakeup;
+ unsigned int max_latency;
+ char *params;
+ struct cal_result_t cal_result;
+ /* enable and disable the sensor handle*/
+ int (*sensors_enable)(struct sensors_classdev *sensors_cdev,
+ unsigned int enabled);
+ int (*sensors_poll_delay)(struct sensors_classdev *sensors_cdev,
+ unsigned int delay_msec);
+ int (*sensors_self_test)(struct sensors_classdev *sensors_cdev);
+ int (*sensors_set_latency)(struct sensors_classdev *sensor_cdev,
+ unsigned int max_latency);
+ int (*sensors_enable_wakeup)(struct sensors_classdev *sensor_cdev,
+ unsigned int enable);
+ int (*sensors_flush)(struct sensors_classdev *sensors_cdev);
+ int (*sensors_calibrate)(struct sensors_classdev *sensor_cdev,
+ int axis, int apply_now);
+ int (*sensors_write_cal_params)(struct sensors_classdev
+ *sensor_cdev, struct cal_result_t *cal_result);
+};
+
+extern int sensors_classdev_register(struct device *parent,
+ struct sensors_classdev *sensors_cdev);
+extern void sensors_classdev_unregister(struct sensors_classdev *sensors_cdev);
+
+#endif /* __LINUX_SENSORS_H_INCLUDED */