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Commit b903b8f6 authored by Jie Cheng's avatar Jie Cheng
Browse files

sensors: Add the class device support for mpu3050 sensor 



Add the sensor class device support for the mpu3050 gyroscope
sensor. By using the class device, the driver will create the
subfolder in the "/sys/class/sensors/". The userspace app
could detect the sensors by searching this folder.

Change-Id: Ieba9cebaa2bb62da223d78290b64865142c945f7
Signed-off-by: default avatarJie Cheng <rockiec@codeaurora.org>
parent bfd7e850

drivers/input/misc/mpu3050.c

+24 −1
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <linux/err.h>

#include <linux/i2c.h>

#include <linux/input.h>

#include <linux/sensors.h>

#include <linux/delay.h>

#include <linux/slab.h>

#include <linux/pm_runtime.h>
@@ -128,6 +129,20 @@ struct mpu3050_sensor { 
	u32    enable;

};



static struct sensors_classdev sensors_cdev = {

	.name = "mpu3050-gyro",

	.vendor = "Invensense",

	.version = 1,

	.handle = SENSORS_GYROSCOPE_HANDLE,

	.type = SENSOR_TYPE_GYROSCOPE,

	.max_range = "35.0",

	.resolution = "0.06",

	.sensor_power = "0.2",

	.min_delay = 2000,

	.fifo_reserved_event_count = 0,

	.fifo_max_event_count = 0,

};



struct sensor_regulator {

	struct regulator *vreg;

	const char *name;
@@ -804,10 +819,16 @@ static int mpu3050_probe(struct i2c_client *client, 
		goto err_free_irq;

	}



	error = sensors_classdev_register(&client->dev, &sensors_cdev);

	if (error < 0) {

		dev_err(&client->dev, "failed to create class device\n");

		goto err_input_cleanup;

	}



	error = create_sysfs_interfaces(&idev->dev);

	if (error < 0) {

		dev_err(&client->dev, "failed to create sysfs\n");

		goto err_input_cleanup;

		goto err_class_sysfs;

	}



	pm_runtime_enable(&client->dev);
@@ -815,6 +836,8 @@ static int mpu3050_probe(struct i2c_client *client, 


	return 0;



err_class_sysfs:

	sensors_classdev_unregister(&sensors_cdev);

err_input_cleanup:

	input_unregister_device(idev);

err_free_irq: