Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c4d842e4 authored by Oliver Wang's avatar Oliver Wang
Browse files

input: sensors: add self test interface for sensors class 



The self test interface is a generic interface for sensor self test.
Add the interface for user space applications to test sensors. Drivers
using sensors class should try to implement the callback if needed.

Change-Id: I008198534940c1357cfb1c7c4ff9b9b37beffdee
Signed-off-by: default avatarOliver Wang <mengmeng@codeaurora.org>
parent 3fc0e794

drivers/sensors/sensors_class.c

+20 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2014, 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
@@ -176,6 +176,24 @@ static ssize_t sensors_delay_show(struct device *dev, 
			sensors_cdev->delay_msec);

}



static ssize_t sensors_test_show(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	struct sensors_classdev *sensors_cdev = dev_get_drvdata(dev);

	int ret;



	if (sensors_cdev->sensors_self_test == NULL) {

		dev_err(dev, "Invalid sensor class self test handle\n");

		return -EINVAL;

	}



	ret = sensors_cdev->sensors_self_test(sensors_cdev);

	if (ret)

		dev_warn(dev, "self test failed.(%d)\n", ret);



	return snprintf(buf, PAGE_SIZE, "%s\n",

			ret ? "fail" : "pass");

}



static struct device_attribute sensors_class_attrs[] = {

	__ATTR(name, 0444, sensors_name_show, NULL),
@@ -191,6 +209,7 @@ static struct device_attribute sensors_class_attrs[] = { 
	__ATTR(fifo_max_event_count, 0444, sensors_fifo_max_show, NULL),

	__ATTR(enable, 0664, sensors_enable_show, sensors_enable_store),

	__ATTR(poll_delay, 0664, sensors_delay_show, sensors_delay_store),

	__ATTR(self_test, 0440, sensors_test_show, NULL),

	__ATTR_NULL,

};

include/linux/sensors.h

+2 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2014, 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
@@ -96,6 +96,7 @@ struct sensors_classdev { 
					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);

};



extern int sensors_classdev_register(struct device *parent,